[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Acosta, Alejandro"]
[Black "Cuellar, Jorge"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2210"]
[BlackElo "2200"]
[PlyCount "48"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 b5 6. Bb3 exd4 7. e5 Ne4 8. Bd5
Nc5 9. Nxd4 Bb7 10. O-O Nxd4 11. Bxb7 Nxb7 12. Qxd4 Nc5 13. Nc3 Ne6 14. Qg4 d5
15. f4 h5 16. Qf3 $146 ({RR} 16. Qd1 c6 17. f5 Qb6+ 18. Kh1 Nc7 19. a4 b4 20.
a5 Qc5 21. Na4 Qxa5 22. Be3 Qb5 23. e6 Bd6 24. c4 bxc3 25. bxc3 Rb8 26. f6 g6
27. e7 Ne6 28. Rf2 Qc4 29. Bd4 c5 30. Be3 Qh4 {Termeulen,A (2127)-Van Vliet,H
(1761)/Leiden 2006/EXT 2012/0-1 (41)}) 16... c6 17. f5 Nc5 18. b4 Nd7 19. e6
Nf6 20. a3 Bd6 21. exf7+ Kxf7 22. Ne2 Be5 23. c3 Ne4 24. Bf4 Qf6 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Acosta, Alejandro"]
[Black "Garcia, L."]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "2210"]
[BlackElo "2370"]
[PlyCount "66"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 Qa5 8.
O-O O-O 9. Bb3 d6 10. h3 Bd7 11. f4 Nxd4 12. Bxd4 Bc6 13. Nd5 Rae8 14. Bxf6 ({
RR} 14. Qd3 Nxd5 15. exd5 Bb5 16. c4 Bxd4+ 17. Qxd4 Bd7 18. Rae1 e6 19. dxe6
Rxe6 20. Rxe6 Bxe6 21. Qxd6 Rd8 22. Qe7 Rd7 23. Qg5 Qxg5 24. fxg5 Rd4 25. Rd1
Rxd1+ 26. Bxd1 Bxc4 27. b3 Ba6 28. Kf2 f6 {Ter Sahakyan,S (2582)-Gorovets,A
(2470)/Jermuk 2013/CBM 155 Extra/1/2-1/2 (44)}) 14... exf6 $146 ({RR} 14...
Qc5+ 15. Kh1 Bxf6 16. f5 Bxb2 17. Rb1 Bd4 18. Qg4 Bg7 19. fxg6 hxg6 20. Nc7 Rc8
21. Bxf7+ Rxf7 22. Qxc8+ Kh7 23. Ne6 Rxf1+ 24. Rxf1 Qe5 25. Rf7 Kh6 26. Qg8 {
1-0 (26) Accattato Martin,M (2144)-Martinez Asensio,J (2144)/Spain 2011/EXT
2013}) 15. f5 Qc5+ 16. Kh1 Rxe4 17. fxg6 hxg6 18. Nxf6+ Bxf6 19. Rxf6 Qg5 20.
Qf1 d5 21. Qf2 Qe3 22. Rf1 Qxf2 23. R1xf2 Kg7 24. c3 Re3 25. R6f4 Re5 26. R4f3
f5 27. Rd3 Rd8 28. Rfd2 Re1+ 29. Kh2 Rb1 30. a3 f4 31. Rd4 g5 32. Ba2 Rc1 33.
c4 Re8 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Acosta, Alejandro"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "2210"]
[BlackElo "2325"]
[PlyCount "62"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. O-O Be7 8. Be3
Nbd7 9. f4 Qc7 10. a4 b6 11. Bf3 Bb7 12. Qe1 h6 $146 ({RR} 12... g6 13. e5 dxe5
14. fxe5 Nxe5 15. Bxb7 Qxb7 16. Bg5 Neg4 17. Rxf6 Bxf6 18. Bxf6 Nxf6 19. Qe5
Ke7 20. Rf1 Nd7 21. Rxf7+ Kxf7 22. Qxe6+ Kf8 23. Qd6+ Kf7 24. Qe6+ Kf8 {1/2-1/
2 (24) Ligterink,G (2360)-Ardiansyah,H (2315)/Amsterdam 1974/MCL}) ({RR} 12...
O-O 13. Qg3 Nc5 14. f5 e5 15. Nb3 Ncd7 16. Bh6 Ne8 17. Be3 Rc8 18. Qf2 Nef6 19.
Nd2 b5 20. axb5 axb5 21. Ra7 b4 22. Nb5 Qb8 23. c4 Nc5 24. g4 Rfe8 25. g5 Nfxe4
26. Rxb7 Qxb7 27. Bxc5 {Pashikian,A (2472)-Sakaev,K (2649)/Kusadasi 2006/CBM
111 ext/0-1 (36)}) ({RR} 12... h5 13. Qe2 g6 14. Bf2 Rc8 15. Kh1 e5 16. fxe5
Nxe5 17. Nd5 Nxd5 18. exd5 O-O 19. Be4 Bg5 20. Be3 Qe7 21. Nf5 gxf5 22. Bxg5
Qxg5 23. Rxf5 Qg4 24. Qe3 f6 25. h3 Qg7 26. Rxh5 Rf7 27. Qf4 {Markaki,S (1691)
-David,A (2589)/Paleochora 2013/CBM 155 Extra/0-1 (41)}) ({RR} 12... O-O 13.
Qg3 Rab8 14. f5 e5 15. Bh6 Ne8 16. Nde2 Kh8 17. Be3 Nef6 18. Qh3 Rfd8 19. g4
Nc5 20. Ng3 d5 21. exd5 Nxd5 22. Nxd5 Bxd5 23. g5 Qc6 24. Bxd5 Rxd5 25. f6 gxf6
26. gxf6 Bxf6 27. Rf5 {Ivashin,A-Abramov,L/Kuibyshev 1942/HCL/0-1 (62)}) 13.
Qg3 g5 14. fxg5 hxg5 15. e5 dxe5 16. Rad1 O-O-O 17. Bxb7+ Qxb7 18. Nb3 Nh5 19.
Qf2 Nf4 20. a5 b5 21. Bb6 Rdg8 22. Rxd7 Kxd7 23. Rd1+ Ke8 24. Rd2 b4 25. Nc5
Qc6 26. N3e4 f5 27. Ng3 Kf7 28. Qe3 Rd8 29. Rf2 Rd1+ 30. Nf1 b3 31. cxb3 Rxf1+
0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Acosta, Alejandro"]
[Black "Martinez, Cristian"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2210"]
[BlackElo "2310"]
[PlyCount "47"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8.
exd5 Ne7 9. c4 Ng6 10. Qa4 Bd7 11. Qb4 Bxb5 ({RR} 11... Qb8 12. h4 a6 13. h5
axb5 14. hxg6 fxg6 15. cxb5 Be7 16. Be3 O-O 17. Be2 Qd8 18. a4 Rc8 19. O-O Bg5
20. Qxd6 Bxe3 21. fxe3 Qg5 22. Qxd7 Qxe3+ 23. Kh2 Qxe2 24. Qe6+ Kh8 25. d6 h6
26. d7 {Popovic,P (2525)-Nikcevic,N (2450)/Igalo 1994/EXT 2002/1-0}) 12. Qxb5+
Qd7 13. a4 $146 ({RR} 13. Qb3 a6 14. Be3 Be7 15. Bd3 O-O 16. O-O-O Rfc8 17. Kb1
a5 18. g3 a4 19. Qc2 Qc7 20. h4 a3 21. b3 Qd8 22. h5 Nf8 23. Bf5 Rcb8 24. f3 b5
25. cxb5 Rxb5 26. Bd3 Rc8 27. Qe2 Ra5 {Pozo Vinuesa,P-Perez Barreto,A (1556)/
Tenerife 2009/CBM 134 Extra/0-1 (53)}) ({RR} 13. Qxd7+ Kxd7 14. Be3 f5 15. f3
Be7 16. Bd3 Nh4 17. O-O f4 18. Bf2 g6 19. b4 Rhc8 20. c5 Nf5 21. Bb5+ Kd8 22.
c6 b6 23. Ba6 Rc7 24. Rae1 Bg5 25. Re4 Ne3 26. Bxe3 fxe3 27. g3 Rf7 {Emiroglu,
C (2291)-Sumer,G (1935)/Denizli 2013/CBM 155 Extra/1-0 (50)}) 13... Nh4 14. Ra3
Nf5 15. Qxd7+ Kxd7 16. Rf3 g6 17. g4 Nh6 18. Bxh6 Bxh6 19. Rxf7+ Kc8 20. h4 Bc1
21. Rh3 Bxb2 22. Rb3 Bd4 23. Rbxb7 Bc5 24. g5 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Acosta, Alejandro"]
[Black "Ruiz, Alciguel"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2210"]
[BlackElo "2200"]
[PlyCount "53"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 O-O 8.
Be2 d6 9. O-O Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. f3 Qa5 13. Rfd1 ({RR} 13. Rab1
Rfc8 14. b4 Qd8 15. Kh1 a5 16. b5 Bd7 17. Na4 Rab8 18. Nb6 Rc7 19. Qxa5 Be6 20.
Qc3 Nd7 21. Nxd7 Bxd4 22. Qxd4 Qxd7 23. a4 b6 24. f4 Rc5 25. f5 gxf5 26. Rb3 f6
27. Rg3+ Kh8 {Dolmatov,S (2615)-Mirzoev,A (2438)/Ubeda 2000/CBM 075/0-1 (50)})
({RR} 13. a3 Rfc8 14. b4 Qd8 15. Rad1 Qf8 16. Be3 b6 17. Rfe1 Nd7 18. Rc1 Bb7
19. Nd5 Ne5 20. Bg5 f6 21. Be3 e6 22. Nf4 Qe7 23. Red1 Bf8 24. Rc3 Rc7 25. Rdc1
Rac8 26. Qb2 g5 27. Nh3 h6 {Krebs,D (2080)-Khanukov,B (2359)/Bad Godesberg
2013/CBM 155 Extra/0-1 (57)}) 13... Rfd8 14. a3 Nd7 $146 ({RR} 14... b6 15. b4
Qh5 16. Be3 Nd7 17. Rac1 Rac8 18. Bg5 Bd4+ 19. Kh1 Ne5 20. f4 Bxc3 21. Rxc3 Ng4
22. h3 Nf2+ 23. Kh2 Nxe4 24. Qe3 Qxe2 25. Qxe2 Nxc3 26. Qxe7 Re8 27. Qf6 Re2
28. Rg1 Ne4 29. Qd4 {Marchiori,D-Campomori,B/Bratto 2006/CBM 113 ext/0-1 (42)})
15. b4 Bxd4+ 16. Qxd4 Qg5 17. b5 Nc5 18. bxc6 Nb3 19. Qd3 Nxa1 20. cxb7 Rab8
21. Rxa1 Rxb7 22. Nd5 Qe5 23. Rf1 e6 24. Ne3 Rdb8 25. Ng4 Qc5+ 26. Kh1 h5 27.
Nf2 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Campora, Daniel Hugo"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2415"]
[BlackElo "2210"]
[PlyCount "121"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 Ngf6 5. Nc3 cxd4 6. Qxd4 e5 7. Qd3 h6 8.
Nd2 Be7 9. Nc4 O-O 10. Bxd7 Bxd7 11. Nxd6 Qc7 12. Nf5 Bxf5 13. exf5 e4 14. Qe2
({RR} 14. Nxe4 Qe5 15. f3 Rad8 16. Qc3 Qxf5 17. O-O Nxe4 18. fxe4 Qxe4 19. Be3
a6 20. Rf4 Qg6 21. Rf2 Bh4 22. g3 Bf6 23. Qb4 Rfe8 24. Bb6 Rd5 25. a4 h5 26.
Qb3 Rde5 27. Raf1 h4 28. Kh1 Re1 {Yudasin,L (2630)-Kasparov,G (2795)/Ljubljana
1995/CBM 051/0-1 (33)}) 14... Qe5 $146 ({RR} 14... Rfe8 15. Bd2 Qe5 16. g4 b5
17. f4 Qc7 18. O-O-O b4 19. Nxe4 Rac8 20. Nxf6+ Bxf6 21. Qd3 a5 22. g5 Red8 23.
Qb3 hxg5 24. Be3 gxf4 25. Bf2 Qe5 26. Rhe1 Rxd1+ 27. Rxd1 Qe2 28. Bb6 f3 29.
Qd3 {Vezzosi,P (2340)-Nunn,J (2620)/Lugano 1989/TD/0-1}) 15. g4 Bb4 16. Bd2
Rfd8 17. a3 e3 18. Qxe3 Bxc3 19. Bxc3 Qb5 20. a4 Qa6 21. Bxf6 gxf6 22. Qb3 Re8+
23. Kd1 Rad8+ 24. Kc1 Qc6 25. f3 Re2 26. Kb1 Rdd2 27. Rc1 Rxh2 28. Ra3 Qd7 29.
Qb5 Qd8 30. Re3 Kg7 31. Qxb7 Rd1 32. Re1 Rxe1 33. Rxe1 Qa5 34. Qe4 Qd2 35. Rc1
Rf2 36. Qb7 a5 37. Qe4 Qd6 38. Qe3 Qh2 39. Qc5 Rxf3 40. Qxa5 Rf4 41. c4 Rxg4
42. c5 Qe5 43. Qc3 Qe4+ 44. Qc2 Qc6 45. Qf2 Rxa4 46. Rg1+ Kf8 47. Qg2 Re4 48.
Rc1 Qa4 49. c6 Rc4 50. Qd5 Rxc1+ 51. Kxc1 Qf4+ 52. Kc2 Qf2+ 53. Kc3 Qe3+ 54.
Kc4 Qe2+ 55. Kb3 Qe3+ 56. Ka4 Qa7+ 57. Qa5 Qd4+ 58. Qb4+ Qxb4+ 59. Kxb4 Ke7 60.
Kc5 h5 61. Kb6 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Campora, Daniel Hugo"]
[Black "Garcia, Gildardo"]
[Result "1-0"]
[ECO "B05"]
[WhiteElo "2415"]
[BlackElo "2440"]
[PlyCount "63"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. c4 Nb6 7. exd6 cxd6 8. Nc3
Be7 9. O-O O-O 10. h3 Bh5 11. Be3 Nc6 12. d5 Bxf3 13. Bxf3 Ne5 14. dxe6 fxe6
15. Bg4 Nbxc4 ({RR} 15... Nexc4 16. Bxe6+ Kh8 17. Bxc4 Nxc4 18. Bd4 Bf6 19. Nd5
Bxd4 20. Qxd4 Ne5 21. Rad1 Nc6 22. Qg4 Rf7 23. Rd2 Qd7 24. Rfd1 Rd8 25. Nc3 Qe7
26. Ne4 Rdf8 27. Nxd6 Rf4 28. Qg3 h6 29. b3 Qf6 30. Nxb7 {Smeets,J (2609)
-Tjiam,D (2386)/Netherlands 2012/CBM 150 Extra/1-0 (33)}) ({RR} 15... Nxg4 16.
Qxg4 Rf6 17. Rad1 Qc7 18. b3 Rg6 19. Bxb6 Qxb6 20. Qe4 Rf8 21. Rd3 Rgf6 22. Qe2
Qc6 23. f3 a6 24. Rfd1 Rg6 25. Kh1 Rd8 26. Qe1 Qc7 27. R1d2 Kf7 28. Re2 Bf8 29.
f4 Qc8 30. Rde3 {Belenkaya,D (2181)-Tskhadadze,A (1824)/St Petersburg 2013/CBM
153 Extra/1-0 (43)}) ({RR} 15... Nxg4 16. Qxg4 Rf6 17. Rad1 Rg6 18. Qe4 Qc7 19.
b3 Qc6 20. Rfe1 Rf8 21. Rd3 Nd7 22. Bxa7 Ne5 23. Qxc6 bxc6 24. Rxe5 dxe5 25.
Ne4 Rd8 26. Rxd8+ Bxd8 27. b4 Rh6 28. b5 Rh4 29. f3 cxb5 30. cxb5 {Garcia,G
(2410)-Colli Lopez,S (2057)/Merida 2008/CBM 127 Extra/1-0 (78)}) 16. Bxe6+ Kh8
17. Bd4 $146 ({RR} 17. Bc1 Nb6 18. a4 Nbd7 19. Be3 Qe8 20. Bd5 Nf6 21. Qb3 Nxd5
22. Nxd5 Qd7 23. Rac1 Nc6 24. Rfd1 Rae8 25. Rd2 Bd8 26. Rcd1 Re6 27. Qa3 Ne5
28. Nf4 Rxf4 29. Bxf4 Nc4 30. Rxd6 Rxd6 31. Rxd6 Nxd6 {Spangenberg,H (2510)
-Monzon,C/Buenos Aires 1994/EXT 2005/1-0 (46)}) 17... Nxb2 18. Qd2 Nbc4 19. Qe2
Na5 20. Rad1 Nac6 21. Be3 Rf6 22. Bb3 Qd7 23. f4 Ng6 24. Ne4 Rff8 25. Nc5 Qc8
26. Ne6 Re8 27. Qh5 Nf8 28. Nxg7 Rd8 29. Qf7 Nd7 30. Nh5 Rg8 31. Rc1 Nc5 32.
Bc2 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Campora, Daniel Hugo"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2415"]
[BlackElo "2330"]
[PlyCount "93"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. c4 Nc6 3. Nc3 g6 4. f4 d6 5. Nf3 Bg7 6. g3 ({RR} 6. h3 e6 7. g3
Nge7 8. Bg2 O-O 9. O-O b6 10. d3 Bb7 11. Be3 d5 12. Bf2 Na5 13. cxd5 exd5 14.
Qc2 Rc8 15. Rad1 d4 16. Nb5 a6 17. Na3 b5 18. b3 Qd6 19. Qc1 Rfd8 20. Nd2 Qb6 {
Toth,T (2009)-Horvath,C (2518)/Hungary 2010/EXT 2011/1/2-1/2 (51)}) 6... f5
$146 ({RR} 6... e6 7. Bg2 Nge7 8. O-O O-O 9. d3 a6 10. Bd2 Rb8 11. a4 Bd7 12.
Qb3 Nd4 13. Nxd4 Bxd4+ 14. Kh1 b5 15. axb5 axb5 16. Nxb5 Bxb5 17. cxb5 Qb6 18.
Ra5 Nc6 19. Ra3 Qxb5 20. Qxb5 Rxb5 21. Bc3 {Kan,W (2380)-Hutchings,S (2330)/
Buenos Aires 1978/EXT 2000/0-1 (49)}) ({RR} 6... e6 7. Bg2 Nge7 8. O-O O-O 9.
d3 Nd4 10. Be3 Nxf3+ 11. Bxf3 Nc6 12. Bg2 Rb8 13. Qd2 Nd4 14. Rac1 Qa5 15. b3
a6 16. Rfe1 Bd7 17. Ne2 Qxd2 18. Bxd2 Nxe2+ 19. Rxe2 Bd4+ 20. Be3 Bxe3+ 21.
Rxe3 {Trejbal,S (2139)-Chmelik,J (2045)/Czechia 2007/EXT 2009/1/2-1/2}) 7. d3
Nf6 8. Bg2 O-O 9. O-O fxe4 10. dxe4 Bg4 11. h3 Be6 12. Qd3 Kh8 13. Rb1 Nb4 14.
Qe2 b5 15. cxb5 Nxa2 16. Ng5 Nxc3 17. bxc3 Bg8 18. c4 Nh5 19. Kh2 h6 20. Nf3
Qe8 21. e5 Rb8 22. Bb2 d5 23. Nh4 dxc4 24. Bc6 Qf7 25. e6 Qxe6 26. Qxe6 Bxe6
27. Nxg6+ Kg8 28. Nxf8 Kxf8 29. Bxg7+ Nxg7 30. f5 Bf7 31. g4 Ne8 32. Ra1 Nd6
33. Rxa7 c3 34. Rc1 Nxb5 35. Bxb5 Rxb5 36. Rxc3 e6 37. fxe6 Bxe6 38. Rf3+ Kg8
39. Rf6 Rb2+ 40. Kg3 Bd5 41. Rd6 Rb3+ 42. Kh4 Bf7 43. Rc6 c4 44. Rc8+ Kg7 45.
Rxc4 Rf3 46. Rc5 h5 47. Rxh5 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Campora, Daniel Hugo"]
[Black "Mendoza, Rafael"]
[Result "1-0"]
[ECO "B60"]
[WhiteElo "2415"]
[BlackElo "2200"]
[PlyCount "73"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Qa5 7. Bb5 Bd7 8.
Nb3 Qd8 9. Bxf6 ({RR} 9. Be2 a6 10. a4 e6 11. a5 Be7 12. Be3 O-O 13. O-O Ne5
14. f4 Ng6 15. Qd3 Re8 16. Kh1 Bf8 17. Bf3 Bc6 18. Nd4 Bd7 19. Nde2 Nh4 20. e5
dxe5 21. fxe5 Nxf3 22. Rxf3 Ng4 23. Bb6 Qc8 {Negi,P (2615)-Moiseenko,A (2667)/
Sestao 2010/CBM 138/1-0 (33)}) 9... gxf6 10. Qh5 a6 11. Be2 Rg8 $146 ({RR}
11... b5 12. O-O e6 13. f4 Qb6+ 14. Kh1 b4 15. Nd1 Be7 16. Nf2 Nd4 17. Bd3 Rc8
18. Nxd4 Qxd4 19. a3 bxa3 20. Rxa3 Qxb2 21. Rxa6 Rb8 22. Ng4 Rg8 23. h3 Rg7 24.
Qh6 Kf8 25. Ra7 Rd8 26. e5 {Espinosa Aranda,A (2402)-Shanava,K (2578)/Benasque
2012/CBM 149 Extra/1-0 (51)}) 12. O-O e6 13. a4 Rg6 14. f4 Rh6 15. Qf3 Qc7 16.
a5 O-O-O 17. Qf2 Kb8 18. Rfd1 Be7 19. Bf3 Rg6 20. Rd3 h5 21. Qd2 Rdg8 22. Na4
h4 23. Nb6 Be8 24. Kh1 f5 25. exf5 Rf6 26. fxe6 fxe6 27. c4 Rgf8 28. Nd4 h3 29.
Bxc6 Bxc6 30. Nxc6+ Qxc6 31. Rxh3 Rxf4 32. Rh8 Rxh8 33. Qxf4 Bd8 34. Re1 Bxb6
35. axb6 e5 36. Rxe5 Rc8 37. Re6 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Campora, Daniel Hugo"]
[Black "Zapata, Alonso"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "2415"]
[BlackElo "2410"]
[PlyCount "82"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Bg5 g6 3. Nc3 d5 4. Bxf6 exf6 5. e4 dxe4 6. Nxe4 Bg7 7. Nf3 O-O 8.
Be2 f5 9. Nc5 b6 10. Nb3 Bb7 11. O-O Nd7 12. c3 Nf6 13. a4 $146 ({RR} 13. Re1
a6 14. a4 Re8 15. a5 Nd5 16. Bf1 h5 17. Rxe8+ Qxe8 18. axb6 cxb6 19. Nbd2 Bf6
20. Qb3 Qc6 21. Re1 Kg7 22. c4 Nc7 23. Ne5 Bxe5 24. Rxe5 Re8 25. Qe3 Qd7 26. d5
Rxe5 27. Qxe5+ f6 {Alburt,L (2510)-Marjanovic,S (2390)/Bucharest 1978/MCD/1-0
(52)}) 13... a5 14. Nbd2 Ne4 15. Nc4 Bh6 16. Re1 Qf6 17. Qc2 Rad8 18. Rad1 Rfe8
19. Nce5 Re7 20. Bc4 Kg7 21. Bf1 Qe6 22. Bd3 f6 23. Nc4 Qc8 24. Re2 Rde8 25.
Rde1 Kf8 26. Na3 Bf4 27. Nb5 Qd7 28. c4 Nd6 29. d5 Rxe2 30. Rxe2 Rxe2 31. Qxe2
Nxb5 32. axb5 Qe7 33. Qc2 Bc8 34. Kf1 Bd6 35. h3 Bd7 36. b3 Bc5 37. Qd2 Kg7 38.
Qb2 Bd6 39. Qd2 Bb4 40. Qe3 Bc5 41. Qd2 Bb4 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Cuellar, Jorge"]
[Black "Campora, Daniel Hugo"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "2200"]
[BlackElo "2415"]
[PlyCount "101"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 f5 4. Nf3 Nf6 5. g3 c6 6. Bg2 Bd6 7. O-O O-O 8. Ne5
Nbd7 9. f4 Ne4 10. Nxe4 dxe4 11. Nxd7 Bxd7 12. c5 $146 ({RR} 12. Be3 Be8 13. d5
exd5 14. cxd5 c5 {1/2-1/2 (14) Gras,C (2127)-Echeguren,G (2104)/Buenos Aires
2000/CBM 079 ext}) 12... Be7 13. b4 a5 14. Rb1 axb4 15. Rxb4 Bc8 16. Ra4 Rxa4
17. Qxa4 Bf6 18. e3 g5 19. Bd2 Kh8 20. Bc3 Rg8 21. Qd1 Qe7 22. Qa1 Qg7 23. fxg5
Qxg5 24. Rf4 Rg6 25. Ba5 Qh6 26. Bc7 Kg8 27. Qc3 Bg5 28. a4 Bxf4 29. Bxf4 Qf8
30. Be5 Bd7 31. Bf1 h6 32. Be2 Kh7 33. Qb3 Qc8 34. a5 Be8 35. Qb6 Rg8 36. Bc4
Qd7 37. Qa7 Kg6 38. Be2 Rf8 39. Qb8 Kh7 40. Qa7 Kg6 41. Kf2 Qc8 42. Qb6 Kh7 43.
Bd6 Rg8 44. Be5 Rf8 45. Bd6 Rf7 46. Be5 Re7 47. Bd6 Rd7 48. Be5 Kg6 49. Ke1 Re7
50. Kf2 Qd7 51. Ke1 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Cuellar, Jorge"]
[Black "Garcia, Gildardo"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "2200"]
[BlackElo "2440"]
[PlyCount "99"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 O-O 6. Be2 c5 7. d5 e6 8. O-O
exd5 9. exd5 Re8 10. h3 Bf5 11. Bd3 Ne4 12. Nxe4 Bxe4 13. Bxe4 Rxe4 14. Qc2 Re8
15. Bd2 Nd7 16. Bc3 Bxc3 17. Qxc3 a6 18. Rfe1 b5 19. Rxe8+ Qxe8 20. Re1 Qd8
$146 ({RR} 20... Qf8 21. b3 Re8 22. Rxe8 Qxe8 23. Qa5 {1/2-1/2 (24)
Kraeussling,A (2268)-Hausrath,D (2484)/Germany 2013/CBM 154}) 21. b3 bxc4 22.
bxc4 Rb8 23. a3 Qf6 24. Qe3 Kg7 25. h4 h6 26. g4 a5 27. Kg2 a4 28. Qe4 Rb3 29.
g5 hxg5 30. hxg5 Qf5 31. Qxf5 gxf5 32. Nh4 Rxa3 33. f4 Ra2+ 34. Kf3 Nb6 35.
Nxf5+ Kg6 36. Nxd6 Rc2 37. Rh1 Nxc4 38. Rh6+ Kg7 39. Nf5+ Kg8 40. Ra6 a3 41. d6
Rd2 42. Kg4 Kh7 43. Ra7 Kg6 44. d7 Rg2+ 45. Kf3 Rd2 46. Ra6+ Kh7 47. Rh6+ Kg8
48. Nd6 Rd3+ 49. Ke2 Rd2+ 50. Ke1 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Cuellar, Jorge"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2200"]
[BlackElo "2330"]
[PlyCount "37"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 e4 5. Nd2 Bb4 6. e3 O-O 7. Be2 Re8 ({RR}
7... d6 8. O-O Bxc3 9. bxc3 Re8 10. f3 exf3 11. Bxf3 Rxe3 12. Nb3 Rxc3 13. Bg5
Ne7 14. Qd2 Rxc4 15. Bxf6 gxf6 16. Be2 Rc6 17. d5 Rb6 18. Rxf6 Nxd5 19. Rxf7
Kxf7 20. Qxd5+ Be6 21. Bh5+ Ke7 22. Re1 {Adamski,J (2410)-Knaak,R (2475)/
Zinnowitz 1973/EXT 2003/0-1 (65)}) ({RR} 7... Bxc3 8. bxc3 d6 9. O-O Bf5 10. f3
exf3 11. Rxf3 Qd7 12. Qf1 Bg6 13. Bd3 Rfe8 14. Bxg6 hxg6 15. Qd3 Qe7 16. Nf1
Na5 17. c5 d5 18. Ng3 Nc4 19. Rf1 Ne4 20. Nxe4 Qxe4 21. Qxe4 Rxe4 22. Rf4 {
Masters,D (2038)-Grebstad,K (1987)/Dublin 2012/CBM 147 Extra/0-1 (90)}) 8. a3
$146 ({RR} 8. O-O Bxc3 9. bxc3 d5 10. cxd5 Nxd5 11. Bb2 Re6 12. c4 Nb6 13. d5
Rh6 14. dxc6 Qh4 15. Be5 Rxc6 16. Bg3 Qe7 17. Qb1 f5 18. Rc1 Na4 19. Nb3 b6 20.
Nd4 Rd6 21. Bxd6 cxd6 22. Qc2 Nc5 {Draeger,E-Stegh,S/Dortmund 1988/TD/1-0 (40)}
) ({RR} 8. O-O Bxc3 9. bxc3 d6 10. f3 exf3 11. Bxf3 Rxe3 12. Nb3 Re8 13. Bg5
Ne7 14. Qd2 c6 15. Rae1 Bf5 16. Bxf6 gxf6 17. h4 d5 18. cxd5 cxd5 19. Bd1 Be4
20. Rxf6 Ng6 21. Qf2 Re6 22. Rxe6 fxe6 {Botvinnik,M-Ragozin,V/Leningrad 1940/
HCL/1-0 (32)}) 8... Bxc3 9. bxc3 d6 10. O-O Ne7 11. Rb1 b6 12. f4 exf3 13. Bxf3
Rb8 14. Ne4 Ned5 15. cxd5 Nxe4 16. Bxe4 Rxe4 17. Rxf7 Kxf7 18. Qf3+ Qf6 19.
Qxe4 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Cuellar, Jorge"]
[Black "Mendoza, Rafael"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2200"]
[BlackElo "2200"]
[PlyCount "47"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. a4 cxd4 8. exd4
Be7 9. Nc3 O-O 10. Bg5 Nc6 11. Re1 b6 12. Rc1 ({RR} 12. Qd3 Nb4 13. Qe2 Bb7 14.
Rad1 Nfd5 15. Bc1 Rc8 16. Ne5 Nxc3 17. bxc3 Nd5 18. Rd3 b5 19. axb5 axb5 20.
Bxd5 Qxd5 21. Qg4 f5 22. Qh3 b4 23. c4 Rxc4 24. Nxc4 Qxc4 25. Rg3 Bf6 26. Bb2
Bd5 {Schwartzman,G (2515)-Dzindzichashvili,R (2540)/Chandler 1997/CBM 061/1/
2-1/2 (43)}) ({RR} 12. Qd2 Bb7 13. Rad1 Na5 14. Be2 Qc7 15. Ne5 Rad8 16. Qf4
Nd5 17. Nxd5 Rxd5 18. Bxe7 Qxe7 19. Bf3 Rdd8 20. Bxb7 Qxb7 21. b4 Nc6 22. Qf3
Rd5 23. b5 Nxd4 24. Rxd4 axb5 25. axb5 f6 26. Nd3 Rfd8 {Ridameya Tatche,J
(2007)-Grau Pacheco,M (2006)/Sabadell 2013/CBM 156 Extra/1-0 (34)}) 12... Bb7
13. Bd3 Nb4 14. Bb1 Qd6 $146 ({RR} 14... Bxf3 15. Qxf3 Nfd5 16. Qh3 g6 17. Bh6
Re8 18. Ne4 f5 19. Nd2 Bf6 20. Nf3 Qd7 21. Qg3 Qxa4 22. Ne5 Bg7 23. Bxg7 Kxg7
24. h4 Re7 25. h5 Qe8 26. Rc4 a5 27. Rec1 Nf6 28. hxg6 hxg6 29. Rc8 {Peek,M
(2409)-Geirnaert,S (2323)/Belgium 2005/EXT 2006/0-1 (46)}) ({RR} 14... Nfd5 15.
Bxe7 Qxe7 16. Ne5 Rad8 17. Qh5 g6 18. Qh6 Qf6 19. Ne4 Qg7 20. Qh4 f6 21. Ng4 g5
22. Ngxf6+ Nxf6 23. Nxg5 h6 24. Re5 Nd7 25. Rxe6 hxg5 26. Qg3 Rf6 27. Qd6 Qf8
28. Rxf6 Nxf6 29. Qg3 {Radosavljevic,P (2116)-Lazic,M (2454)/Croatia 2009/EXT
2011/0-1 (38)}) 15. Qe2 Rac8 16. Ne5 Nbd5 17. Qd3 g6 18. Bh6 Rfd8 19. Qh3 Bf8
20. Bg5 Bg7 21. Ba2 Re8 22. Qh4 b5 23. Bxd5 Nxd5 24. Ne4 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Cuellar, Jorge"]
[Black "Minaya Molano, Juan M"]
[Result "1-0"]
[ECO "E67"]
[WhiteElo "2200"]
[BlackElo "2320"]
[PlyCount "87"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 Nd7 5. g3 Ngf6 6. Bg2 O-O 7. O-O e5 8. h3
exd4 9. Nxd4 Nb6 10. b3 d5 11. Ba3 Re8 12. c5 Nbd7 13. c6 Ne5 14. cxb7 Bxb7 15.
Rc1 Rc8 16. Na4 Ne4 17. Nc5 Nxc5 18. Bxc5 Nd7 19. b4 Nxc5 20. Rxc5 Bf8 $146 ({
RR} 20... c6 21. a3 Bf8 22. Rc3 c5 23. bxc5 Bxc5 24. e3 Ba6 25. Re1 Qa5 26. Rc1
Bc4 27. Nb3 Qxa3 28. Nxc5 Qxc5 29. Qa4 a5 30. Red1 Red8 31. e4 Qb4 32. Qxb4
axb4 33. Rd4 b3 34. exd5 Bd3 35. Rxc8 {Paschall,W (2381)-Nagle,S (2375)/
Budapest 2004/CBM 100 ext/1/2-1/2 (38)}) 21. Rb5 Ba6 22. Rxd5 Qf6 23. b5 Bb7
24. Rd7 Bxg2 25. Kxg2 Bd6 26. e3 Kf8 27. Qa4 Re5 28. Qa6 Ree8 29. Rc1 Qe5 30.
Qc6 Qf6 31. Rc4 Rb8 32. Ra4 Rb6 33. Qd5 Re5 34. Qa8+ Re8 35. Qxa7 Qe5 36. Qa5
Rc8 37. Qc3 Ke8 38. Rxd6 Rxd6 39. Rc4 Rf6 40. a4 h5 41. Rc5 Qe7 42. a5 h4 43.
b6 hxg3 44. f3 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Cuellar, Jorge"]
[Black "Zapata, Alonso"]
[Result "1/2-1/2"]
[ECO "E63"]
[WhiteElo "2200"]
[BlackElo "2410"]
[PlyCount "128"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 g6 2. g3 Bg7 3. Bg2 d6 4. d4 Nf6 5. Nf3 O-O 6. O-O Nc6 7. Nc3 a6 8. b3
Rb8 9. Bb2 b5 10. cxb5 axb5 11. Rc1 Bd7 12. Re1 ({RR} 12. Qc2 Na7 13. e4 b4 14.
Na4 Bb5 15. Rfe1 c6 16. h4 e6 17. e5 Nd5 18. exd6 Bxa4 19. bxa4 Qxd6 20. Ne5
Rb7 21. Qb3 Rc8 22. Rc5 Bf8 23. Rec1 Rbc7 24. Nd3 Qd8 25. R5c2 h5 26. Nc5 Qf6 {
Gofshtein,L (2415)-Kuzmin,G (2545)/Yerevan 1981/MCD/1-0 (37)}) ({RR} 12. Qc2
Qc8 13. Rfd1 Nb4 14. Qd2 c5 15. a3 Na6 16. e4 Bh3 17. Nd5 Nxd5 18. exd5 Bxg2
19. Kxg2 Qf5 20. dxc5 Bxb2 21. Qxb2 Nxc5 22. Qb1 Qxb1 23. Rxb1 Ra8 24. b4 Ne4
25. Rb3 Ra7 {1/2-1/2 (25) Mehra,R (1856)-Cox,J (2006)/Haarlem 2012/EXT 2013})
12... Nb4 $146 ({RR} 12... b4 13. Nb1 Na7 14. e4 e6 15. h3 Ra8 16. a4 bxa3 17.
Nxa3 Nb5 18. Nxb5 Bxb5 19. Qc2 Ra7 20. Ra1 Rb7 21. Ra3 h6 22. Rea1 Kh7 23. Nd2
Qd7 24. e5 Nd5 25. Ne4 Rfb8 26. Ra7 Bc6 27. Rxb7 {Gasztonyi,E (2200)-Petran,P
(2200)/Hungary 1973/MCD/1/2-1/2 (41)}) 13. Qd2 c6 14. h3 Qb6 15. e4 Rfd8 16. a3
Na6 17. b4 Be8 18. Ba1 e5 19. Red1 Nd7 20. Ne2 f6 21. h4 Bf7 22. Bh3 Nf8 23.
Nc3 h5 24. Rb1 Kh7 25. d5 Bh6 26. Qd3 c5 27. bxc5 Nxc5 28. Qe2 Be8 29. Na2 Ra8
30. Bb2 Ra5 31. Nb4 Na6 32. Bc1 Bxc1 33. Rdxc1 Nc5 34. Rc3 Rda8 35. Qe3 Qa7 36.
Nd2 Rxa3 37. Rbc1 Rxc3 38. Rxc3 Bd7 39. Bf1 Na4 40. Nc6 Qb7 41. Rb3 Bxc6 42.
dxc6 Qxc6 43. Rxb5 Nc5 44. Rb1 Nfe6 45. Bc4 Qc7 46. Bd5 Rb8 47. Rc1 Nd4 48. Nf3
Nc6 49. Nh2 Nb4 50. Bc4 Qb7 51. f3 Qb6 52. Nf1 Nc6 53. Kh1 Qb2 54. Qc3 Nd4 55.
Qxb2 Rxb2 56. Nh2 f5 57. Ra1 fxe4 58. Ra7+ Kh6 59. Bg8 g5 60. Ng4+ hxg4 61.
Rh7+ Kg6 62. h5+ Kf6 63. Rf7+ Ke6 64. Rb7+ Kf6 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, Gildardo"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2440"]
[BlackElo "2210"]
[PlyCount "63"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. g5 hxg5 8. Bxg5
Nc6 9. Qd2 Qb6 10. Nb3 a6 11. O-O-O Bd7 12. Be3 Qc7 13. f4 b5 ({RR} 13... Rc8
14. Bg2 Be7 15. Bf3 b5 16. Kb1 b4 17. Ne2 a5 18. h4 g6 19. Ng3 a4 20. Nc1 a3
21. b3 Na7 22. Bxa7 Qxa7 23. Nd3 Qc7 24. Nxb4 d5 25. Nd3 Bc6 26. exd5 Nxd5 27.
c4 Nf6 28. Bxc6+ {Sisniega,M (2470)-Cebalo,M (2485)/Taxco 1985/IZT/1-0 (38)}) (
{RR} 13... O-O-O 14. Bg2 Kb8 15. Na4 b5 16. Bb6 Qb7 17. Bxd8 bxa4 18. Na5 Nxa5
19. Qxa5 Ng4 20. Bb6 Be7 21. Rd4 Bb5 22. Bf1 Rh5 23. Rb4 d5 24. Bxb5 axb5 25.
Rxb5 Kc8 26. Bc5 {1-0 (26) Piorun,K (2370)-Zysko,J (2104)/Leba 2008/CBM 123
Extra}) 14. Bg2 b4 $146 ({RR} 14... Rc8 15. Bf3 Be7 16. Kb1 Kf8 17. h4 b4 18.
Ne2 e5 19. f5 a5 20. h5 a4 21. Nbc1 Na5 22. b3 axb3 23. axb3 Ke8 24. h6 g6 25.
fxg6 fxg6 26. Rhg1 Kf7 27. Rdf1 Be6 28. Bg4 Bxg4 29. Rxg4 {Hawelko,M (2450)
-Salazar Jacob,H (2390)/Dubai 1986/TD/1-0 (42)}) ({RR} 14... Rc8 15. Kb1 Be7
16. Rhe1 b4 17. Na4 Na5 18. Nb6 Nc4 19. Nxc4 Qxc4 20. e5 dxe5 21. fxe5 Nd5 22.
Bg1 Rh4 23. Rf1 g5 24. Qc1 a5 25. Nd2 Qb5 26. Ne4 a4 27. Nd6+ Bxd6 28. Qxg5 Bf8
29. Qxh4 {Stein,L-Krogius,N/Kiev 1964/URS-ch/1-0 (35)}) 15. Na4 Rb8 16. e5 dxe5
17. Nac5 Bxc5 18. Nxc5 Rd8 19. fxe5 Nxe5 20. Nxa6 Qa5 21. Qd6 Rc8 22. Bc5 Ng6
23. Kb1 Bb5 24. Bb7 Ne4 25. Bxe4 Qxa6 26. Qd4 Rh4 27. Qxg7 Rxc5 28. Bxg6 fxg6
29. Qxg6+ Ke7 30. Qg7+ Ke8 31. Qg8+ Ke7 32. Qd8+ 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, Gildardo"]
[Black "Garcia, L."]
[Result "1/2-1/2"]
[ECO "B34"]
[WhiteElo "2440"]
[BlackElo "2370"]
[PlyCount "72"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Nxc6 bxc6 8.
e5 Nd5 9. Nxd5 cxd5 10. Qxd5 Rb8 11. Bxa7 Rxb2 12. Bd4 Rxc2 13. Bd3 e6 14. Qa8
Rc6 15. Bb5 Rc2 ({RR} 15... Ra6 16. Bxa6 Qa5+ 17. Kf1 O-O 18. Qa7 Bxa6+ 19. Kg1
Rc8 20. h4 h5 21. Rh3 Bxe5 22. Rf3 Bxd4 23. Qxd4 d5 24. Qf6 Qc7 25. Re1 Qd7 26.
Re5 Rc1+ 27. Kh2 Rc7 28. Rg3 Qe7 29. Rxe6 Qxf6 30. Rxf6 {Rachels,S (2475)
-Petursson,M (2550)/Manila 1990/CBM 019/1-0 (39)}) ({RR} 15... Ra6 16. Bxa6
Qa5+ 17. Ke2 O-O 18. Bb7 Qb5+ 19. Ke3 Bh6+ 20. f4 f6 21. Qa6 Qb4 22. Qb6 Qxb6
23. Bxb6 Bxb7 24. Bc5 Rc8 25. Bd4 d6 26. exd6 e5 27. Bc5 Bxf4+ 28. Kf2 Rxc5 29.
Rhd1 Rc2+ 30. Ke1 {Palencia,W (2350)-Garcia,G (2470)/Guayaquil 2003/CBM 096
ext/0-1 (35)}) 16. O-O O-O 17. Qe4 $146 ({RR} 17. Bd3 Rd2 18. Qe4 Qa5 19. a4 d6
20. Qe1 Bb7 21. Bb5 Qb4 22. Ra2 Rxd4 23. Qxb4 Rxb4 24. exd6 Bd5 25. Rc2 Bb3 26.
Rc7 Bxa4 27. Bxa4 Rxa4 28. Rd1 Ra1 {0-1 (30) Veltkamp,G (2207)-Paci,C (2376)/
Belgium 2012/EXT 2013}) 17... Qc7 18. a4 Bb7 19. Qe3 Rc8 20. Rfd1 Bd5 21. Bd3
Ra2 22. Rac1 Bc6 23. Bb5 Qb7 24. Qd3 Ra8 25. Qb1 Bd5 26. Rc5 Bf8 27. Rc3 Ra3
28. Rxa3 Bxa3 29. Qd3 Bf8 30. f3 Qc7 31. Qe3 Qb7 32. h4 h5 33. Kf2 Be7 34. Kg3
Kg7 35. Qf4 Bc6 36. Rb1 Bxf3 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, Gildardo"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "0-1"]
[ECO "B46"]
[WhiteElo "2440"]
[BlackElo "2330"]
[PlyCount "74"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nc6 6. Be2 Nge7 7. Be3 Nxd4 ({
RR} 7... Ng6 8. O-O Be7 9. f4 O-O 10. Nb3 Qc7 11. a4 b6 12. Qe1 Na5 13. Qf2 Rb8
14. Nd2 f6 15. Bd3 Bc5 16. Rae1 Nc6 17. Bc4 Nb4 18. Bb3 Kh8 19. Kh1 Bb7 20. Nc4
f5 21. Bxc5 bxc5 22. e5 {Areshchenko,A (2462)-Zubarev,A (2470)/Ordzhonikidze
2001/CBM 086/1/2-1/2 (53)}) ({RR} 7... b5 8. O-O Nxd4 9. Qxd4 Nc6 10. Qd1 Be7
11. f4 d6 12. Kh1 O-O 13. Bf3 Qc7 14. Ne2 Bd7 15. Nd4 Rac8 16. Nxc6 Bxc6 17.
Bd4 e5 18. Bc3 Qb7 19. Qd2 Bxe4 20. Bxe4 Qxe4 21. Rae1 Qg6 22. fxe5 {
Karthikeyan,M (2329)-Fominyh,A (2456)/Chennai 2012/CBM 151 Extra/0-1 (71)}) 8.
Qxd4 Nc6 9. Qb6 Qf6 $146 ({RR} 9... Qxb6 10. Bxb6 Bb4 11. O-O-O Ba5 12. Bxa5
Nxa5 13. Rd6 Ke7 14. Rhd1 b5 15. Rb6 Nc6 16. f4 Rb8 17. Rxb8 Nxb8 18. e5 Bb7
19. Bd3 f5 20. a4 b4 21. Nb1 Rc8 22. Nd2 Bd5 23. b3 g6 24. g3 {Janousek,P
(2146)-Machacek,M (1913)/Czechia 2002/EXT 2003/1/2-1/2 (40)}) 10. O-O Be7 11.
Rad1 Bd8 12. Qb3 b5 13. f4 Qe7 14. Nb1 O-O 15. Nd2 Bb7 16. e5 Rc8 17. Bf3 Na5
18. Qd3 Bxf3 19. Rxf3 Qb4 20. Rh3 g6 21. c3 Qxb2 22. Ne4 Rc4 23. Bc1 Qxa2 24.
Nd6 Rc5 25. f5 Rd5 26. Qf1 Bb6+ 27. Kh1 Rxd1 28. Qxd1 Qb1 29. Rh4 Nb3 30. Ne4
Bd8 31. f6 Qxc1 32. Qxc1 Nxc1 33. Ng5 h5 34. g4 Nd3 35. gxh5 Nxe5 36. Ne4 d5
37. hxg6 Nxg6 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, Gildardo"]
[Black "Minaya Molano, Juan M"]
[Result "1-0"]
[ECO "B67"]
[WhiteElo "2440"]
[BlackElo "2320"]
[PlyCount "41"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Nc6 7. Qd2 a6 8.
O-O-O Bd7 9. f4 b5 10. Nxc6 Bxc6 11. Bd3 Be7 12. e5 dxe5 13. fxe5 Nd7 14. Bxe7
Qxe7 15. Be4 ({RR} 15. Qf4 Nc5 16. Ne4 Bxe4 17. Bxe4 Rc8 18. Rd6 O-O 19. Kb1
Nxe4 20. Qxe4 Rc4 21. Qe2 a5 22. Rhd1 Rc5 23. Qe3 Qc7 24. R1d2 b4 25. Qf4 h6
26. b3 Rb5 27. Qe4 Qc5 28. Rd8 Rb8 29. Rxf8+ Kxf8 {Mecking,H (2635)
-Polugaevsky,L (2620)/Luzern 1977/Candidates/1/2-1/2 (55)}) 15... Qc5 ({RR}
15... Rc8 16. Bxc6 Rxc6 17. Ne4 Nxe5 18. Nd6+ Kf8 19. Rhe1 f6 20. Nxb5 axb5 21.
Rxe5 Kf7 22. Rxb5 Rhc8 23. c3 R8c7 24. Qd8 e5 25. Qxe7+ Kxe7 26. a4 h5 27. Kc2
h4 28. Rd3 Ke6 29. g4 hxg3 30. hxg3 {Roman,R (2015)-Palma Moscoso,A (2190)/
Bogota 2013/CBM 155 Extra/1-0 (41)}) 16. Rhe1 Ra7 17. b4 Qc4 $146 ({RR} 17...
Qb6 18. Qg5 O-O 19. Rd6 Qf2 20. Re2 Qg1+ 21. Rd1 Qb6 22. Rd6 Qg1+ 23. Rd1 {1/
2-1/2 (23) Salov,V (2400)-Yermolinsky,A (2450)/Jurmala 1983/MCL}) ({RR} 17...
Qb6 18. Qd3 h6 19. Qg3 O-O 20. Rd6 Rc8 21. Red1 Rac7 22. Bxc6 Rxc6 23. Ne4
Rxc2+ 24. Kb1 Qc7 {0-1 (24) Radovanovic,D (2370)-Lupulescu,C (2555)/Vrnjacka
Banja 2004/CBM 102 ext}) 18. Qe3 Bxe4 19. Nxe4 Qc7 20. Qg5 Kf8 21. Nc5 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, Gildardo"]
[Black "Ruiz, Alciguel"]
[Result "1/2-1/2"]
[ECO "B37"]
[WhiteElo "2440"]
[BlackElo "2200"]
[PlyCount "131"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Nc2 Nf6 7. Nc3 O-O 8.
Be2 b6 9. O-O Bb7 10. f3 ({RR} 10. Bg5 d6 11. Qd2 Rc8 12. b3 a6 13. f3 Ne5 14.
Rac1 Qc7 15. Nd5 Bxd5 16. cxd5 b5 17. Be3 Qb7 18. Qa5 e6 19. dxe6 d5 20. exf7+
Nxf7 21. Nb4 dxe4 22. Qxa6 Qxa6 23. Nxa6 Nd5 24. Bc5 Bh6 {Nielsen,P (2648)
-Ramirez Alvarez,A (2507)/Wijk aan Zee 2005/CBM 105/1/2-1/2 (54)}) ({RR} 10.
Bd2 Qb8 11. f3 Rd8 12. Qe1 d6 13. Qh4 Rd7 14. Rad1 Qf8 15. b4 Rc8 16. a4 a5 17.
b5 Ne5 18. Na3 Rdc7 19. Qf2 Ned7 20. Nab1 Bh6 21. Nd5 Bxd5 22. exd5 Bxd2 23.
Rxd2 Qh6 24. Rd4 Qg7 {Basener,W (2148)-Reich,T (2382)/Munich 2013/CBM 156
Extra/0-1 (81)}) 10... Rc8 11. Qd2 $146 ({RR} 11. Be3 d6 12. Qd2 Nd7 13. Rac1
Qe8 14. b3 Nc5 15. Nd5 f5 16. exf5 gxf5 17. Bh6 Qg6 18. Bxg7 Qxg7 19. b4 Nd7
20. f4 e6 21. Rf3 Kh8 22. Rg3 Qh6 23. Qc3+ e5 24. b5 Nd4 25. Nxd4 Bxd5 {
Platonov,I (2455)-Sideif Sade,F (2320)/Rostov on Don 1976/MCD/0-1 (42)}) ({RR}
11. Be3 e6 12. c5 bxc5 13. Bxc5 Re8 14. Nb5 d5 15. Kh1 Ne5 16. Nd6 Qe7 17. b4
Ned7 18. Nxe8 Nxe8 19. Rb1 Nxc5 20. bxc5 dxe4 21. fxe4 Bxe4 22. Rb4 Bd5 23.
Rbf4 Qxc5 24. Nb4 Rd8 25. Nd3 Qc6 {Nordenbaek,J (2210)-Hansen,L (2209)/Denmark
2010/EXT 2011/1/2-1/2}) 11... Na5 12. b3 d5 13. exd5 Nxd5 14. Nxd5 Bxd5 15. Rd1
Bb7 16. Qe3 Qc7 17. Rb1 Rfd8 18. Bd2 Nc6 19. Bc3 e5 20. Bd3 Nd4 21. Bxd4 exd4
22. Qg5 Qc5 23. Qh4 a5 24. Re1 Re8 25. Rbd1 Rcd8 26. Kh1 Qd6 27. Be4 Bxe4 28.
Rxe4 d3 29. Ne3 f5 30. Rxe8+ Rxe8 31. Nd5 Qe5 32. Qf2 Qe2 33. Qxe2 Rxe2 34. Nf4
Rxa2 35. Nxd3 Ra3 36. b4 a4 37. c5 b5 38. c6 Rc3 39. Nc5 Be5 40. f4 Bc7 41. g3
a3 42. Kg2 a2 43. Ra1 Rc2+ 44. Kf3 Bb6 45. Ke3 Bxc5+ 46. Kd3 Rc4 47. bxc5 Rxc5
48. Rxa2 Rxc6 49. Ra7 Rb6 50. Kc3 Rd6 51. Rb7 Rd5 52. Kc2 h5 53. Kc3 Kh8 54.
Kc2 h4 55. gxh4 Rd4 56. h5 gxh5 57. Rxb5 Rxf4 58. Kd3 Kg7 59. Ke3 Re4+ 60. Kf3
Kg6 61. Rb8 Kg5 62. Rg8+ Kh4 63. Rf8 Re5 64. Kf4 Re2 65. Kf3 Rxh2 66. Rxf5
1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, Gildardo"]
[Black "Zapata, Alonso"]
[Result "1-0"]
[ECO "B46"]
[WhiteElo "2440"]
[BlackElo "2410"]
[PlyCount "83"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be2 Nge7 7. O-O Nxd4 8.
Qxd4 Nc6 9. Qd3 Qc7 10. Be3 ({RR} 10. Kh1 Be7 11. f4 b5 12. Qg3 O-O 13. Be3 Bb7
14. a3 Na5 15. Rad1 Nc4 16. Bc1 Rad8 17. Rd3 d5 18. exd5 exd5 19. Rfd1 Bf6 20.
Bf3 d4 21. Ne2 Nd6 22. Bxb7 Nxb7 23. b4 Qxc2 24. Qf3 Rfe8 {Zontakh,A (2540)
-Romanishin,O (2600)/Donetsk 1998/CBM 068/0-1 (46)}) ({RR} 10. f4 b5 11. Bf3 d6
12. Kh1 Bb7 13. e5 dxe5 14. f5 Rd8 15. Qe3 exf5 16. Nd5 Qd7 17. Rd1 Be7 18.
Nf6+ Bxf6 19. Rxd7 Rxd7 20. Bd2 O-O 21. Bc3 h6 22. a4 Bg5 23. Qb6 e4 24. Be2 b4
{Christensen,E (2008)-Bjornsson,S (2317)/Reykjavik 2010/CBM 135 Extra/0-1 (37)}
) ({RR} 10. Qg3 Qxg3 11. hxg3 Bc5 12. Bf4 b5 13. e5 Bb7 14. Bf3 Be7 15. Ne4 Nd4
16. Nd6+ Bxd6 17. Bxb7 Ra7 18. exd6 Rxb7 19. Be5 Nf5 20. g4 Nh4 21. f4 f6 22.
Bc3 h5 23. g3 Ng6 24. f5 Nf8 {Van der Wiel,J (2590)-Zapata,A (2505)/Wijk aan
Zee 1987/CBM 002/1/2-1/2 (31)}) 10... Be7 11. Rac1 $146 ({RR} 11. f4 d6 12. Bf3
O-O 13. Qd2 b5 14. a4 b4 15. Ne2 Rb8 16. Nd4 Nxd4 {1/2-1/2 (16) Scheck,R (2175)
-Egartner,W (2145)/Austria 1998/EXT 2001}) ({RR} 11. Qd2 Rb8 12. Rad1 d6 13.
Bf4 Ne5 14. Bg5 Bxg5 15. Qxg5 O-O 16. Qd2 Rd8 17. f4 Ng6 18. Kh1 Ne7 19. Bd3 f6
20. Qe2 b5 21. Qh5 Qc6 22. e5 f5 23. exd6 Ng6 24. Qf3 Qxf3 25. Rxf3 Bb7 {
Helmers,K (2465)-Agdestein,S (2400)/Gjovik 1983/MCL/0-1 (36)}) 11... O-O 12.
Rfd1 b5 13. a4 b4 14. Na2 a5 15. c4 d6 16. b3 Rd8 17. f4 Bb7 18. Bf3 Nb8 19.
Rc2 Nd7 20. Re2 Nc5 21. Qc2 Rac8 22. Nc1 Qb8 23. Bd4 e5 24. Bb2 Ne6 25. Nd3
exf4 26. Bg4 Bg5 27. Ne1 Rf8 28. Nf3 Bd8 29. Qd2 Bb6+ 30. Kh1 Be3 31. Rxe3 fxe3
32. Qxe3 Rce8 33. Nh4 Qc7 34. Nf5 Qc5 35. Qg3 Ng5 36. Bd4 Nxe4 37. Qf4 Qc7 38.
Bxg7 Re6 39. Bd4 Qc6 40. Bf3 f6 41. Qg4+ Kf7 42. Qg7+ 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, L."]
[Black "Campora, Daniel Hugo"]
[Result "1-0"]
[ECO "D18"]
[WhiteElo "2370"]
[BlackElo "2415"]
[PlyCount "59"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O
O-O 9. Na2 Be7 ({RR} 9... Bd6 10. Nc3 Nbd7 11. Re1 Bg4 12. Be2 Qe7 13. e4 Bxf3
14. Bxf3 e5 15. d5 a5 16. Bg5 h6 17. Bh4 Bb4 18. Re3 Rfd8 19. g4 Nc5 20. Qc2 g5
21. Bg3 Rac8 22. dxc6 bxc6 23. h4 Nfd7 24. hxg5 {Bitter,A (1856)-Hajnal,Z
(2364)/Stein am Rhein 2013/CBM 153 Extra/0-1 (71)}) 10. b4 a5 $146 ({RR} 10...
Nbd7 11. Qe2 Nb6 12. Bb3 Nbd5 13. Bd2 Ne4 14. Be1 Bg4 15. h3 Bh5 16. g4 Bg6 17.
Ne5 f5 18. Nxg6 hxg6 19. f3 Ng5 20. Kg2 Bf6 21. Bd2 Qd7 22. Rad1 Rae8 23. Nc1
Kh7 24. h4 Nf7 25. g5 {Nedela,V (2435)-Frolik,M (2240)/Czechia 1996/EXT 2000/
1-0 (41)}) ({RR} 10... Nbd7 11. Qb3 Be4 12. Nd2 Bg6 13. Nc3 e5 14. d5 cxd5 15.
Nxd5 Bd6 16. Nxf6+ Nxf6 17. h3 e4 18. Bb2 Qe7 19. Bc3 Rac8 20. Rfc1 Bf5 21.
Rab1 h6 22. Bd4 Nh7 23. Bc5 Rfd8 24. Nf1 Qg5 25. Bxd6 {Pinc,M (2195)-Koubek,V
(2107)/Czechia 2012/EXT 2013/1-0 (35)}) 11. Qb3 axb4 12. Nxb4 b5 13. Bd3 Qa5
14. Bxf5 bxa4 15. Qc4 Bxb4 16. Bc2 Qb5 17. Qa2 a3 18. Rb1 Nd5 19. Bd2 Qa5 20.
Rb3 Bxd2 21. Nxd2 Nb4 22. Nc4 Qb5 23. Bxh7+ Kh8 24. Qd2 Qxc4 25. Rxb4 Qd5 26.
Bd3 Nd7 27. Qc2 Rfb8 28. Rxb8+ Rxb8 29. Ra1 Rb2 30. Qxb2 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, L."]
[Black "Cuellar, Jorge"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2370"]
[BlackElo "2200"]
[PlyCount "82"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 c5 2. Nc3 b6 3. e4 Nc6 ({RR} 3... d6 4. f4 g6 5. Nf3 Bg7 6. d4 cxd4 7.
Nxd4 Bb7 8. Be3 Nd7 9. Be2 Rc8 10. O-O Ngf6 11. Qc2 O-O 12. Rad1 Qc7 13. g4 a6
14. g5 Ne8 15. Nd5 Qd8 16. Bg4 e6 17. Nxe6 fxe6 18. Bxe6+ {Dimakiling,O (2427)
-Bilguun,S (2213)/Tagaytay City 2013/CBM 152 Extra/1/2-1/2 (70)}) 4. Nf3 ({RR}
4. g3 Bb7 5. Bg2 g6 6. Nge2 Bg7 7. O-O d6 8. d3 Nf6 9. h3 O-O 10. Be3 Rc8 11.
b3 a6 12. Rb1 Nd7 13. a3 Nd4 14. b4 Bc6 15. Qd2 Nxe2+ 16. Nxe2 Qc7 17. Rfc1 Qa7
18. Nc3 Rfe8 {Jirovsky,M (2446)-Velicka,P (2437)/Ostrava 2002/CBM 088 ext/1/
2-1/2 (37)}) 4... e5 $146 ({RR} 4... g6 5. d3 Bg7 6. Bd2 e6 7. Rb1 Nge7 8. a3
O-O 9. Ne2 d5 10. Qc2 a5 11. Ng3 d4 12. Be2 e5 13. O-O f5 14. exf5 Nxf5 15.
Nxf5 Bxf5 16. Rbe1 Qc7 17. Nh4 Be6 18. Qc1 Rae8 19. Bh6 {Voelpel,F-Tochtermann,
G/Ludwigshafen 1996/EXT 1998/0-1 (87)}) 5. g3 d6 6. Bg2 Nf6 7. O-O Be7 8. d3 h6
9. Nd5 Bg4 10. h3 Bxf3 11. Bxf3 Nxd5 12. cxd5 Nd4 13. Bg2 O-O 14. Be3 Rc8 15.
h4 Bf6 16. Bh3 Rc7 17. Kg2 Qe7 18. Rc1 b5 19. Qd2 Rb8 20. b3 Rb6 21. f4 exf4
22. Rxf4 Be5 23. Rf2 Rb8 24. Rcf1 f6 25. Bg4 Kh7 26. Qd1 g6 27. Qd2 Qg7 28. Bf4
Rbb7 29. Bxe5 fxe5 30. h5 Rf7 31. hxg6+ Qxg6 32. Bf5 Nxf5 33. Rxf5 Rxf5 34.
Rxf5 b4 35. Qf2 Kg7 36. Qf3 Rf7 37. Rxf7+ Qxf7 38. Qg4+ Kh7 39. Qc8 Qe7 40.
Qf5+ Kg7 41. Qg4+ Kh7 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, L."]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "2370"]
[BlackElo "2325"]
[PlyCount "23"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 b5 5. d3 exd3 6. cxb5 dxe2 7. Bxe2 Bb7 8.
O-O h6 ({RR} 8... Be7 9. Bf3 d5 10. Nh3 a6 11. Nf4 axb5 12. Nfxd5 Nxd5 13. Bxd5
Bxd5 14. Nxd5 O-O 15. Re1 Bd6 16. Qf3 Nc6 17. Rd1 Ne5 18. Qh5 Ng6 19. Ne3 b4
20. Nc4 Re8 21. Bg5 Qb8 22. Nxd6 cxd6 23. Be3 {Tiller,B-Gonzalez Rodriguez,J
(2325)/La Valetta 1980/EXT 2000/1-0 (34)}) 9. Nf3 a6 $146 ({RR} 9... Bc5 10.
Nd4 O-O 11. Be3 d5 12. Rc1 Re8 13. Bf3 Bd6 14. Nb3 a6 15. Na5 Bc8 16. Nxd5 Nxd5
17. Bxd5 c6 18. Nxc6 Qf6 19. Qf3 Qxf3 20. Bxf3 Bb7 21. Rfd1 Bf8 22. Bf4 axb5
23. Nxb8 Bxf3 24. gxf3 {Bojkovic,N (2408)-Stojanovic,A (2170)/Budva 2003/CBM
096 ext/1-0 (34)}) ({RR} 9... Bc5 10. Nd4 Bxd4 11. Qxd4 O-O 12. b4 d6 13. Bb2
Nbd7 14. f4 Re8 15. Bf3 Bxf3 16. Rxf3 Qb8 17. Nd5 Qb7 18. Nxf6+ Nxf6 19. Rg3
Re6 20. f5 Re5 21. Qh4 Ne4 22. Re3 Qb6 23. Rae1 Nc3 24. Qg3 {Plaskett,J (2450)
-Hempson,P/Blackpool 1988/TD/0-1}) 10. Qb3 axb5 11. Ne5 d5 12. Qxb5+ 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, L."]
[Black "Martinez, Cristian"]
[Result "1/2-1/2"]
[ECO "E66"]
[WhiteElo "2370"]
[BlackElo "2310"]
[PlyCount "24"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 c5 3. g3 Nc6 4. Bg2 g6 5. Nf3 Bg7 6. O-O O-O 7. d4 d6 8. d5
Na5 9. Nd2 a6 10. Qc2 e5 11. b3 Rb8 12. Bb2 b5 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Garcia, L."]
[Black "Mendoza, Rafael"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2370"]
[BlackElo "2200"]
[PlyCount "101"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 c5 2. Nf3 Nf6 3. g3 e6 4. c4 cxd4 5. Nxd4 a6 6. Bg2 Be7 7. Nc3 O-O 8. O-O
Qc7 9. Qd3 d6 10. b3 Nbd7 11. Bb2 Ne5 12. Qd2 Bd7 13. Rac1 ({RR} 13. f4 Nc6 14.
Nc2 Rab8 15. Rfd1 b5 16. cxb5 axb5 17. h3 d5 18. Kh2 h5 19. e4 h4 20. exd5
hxg3+ 21. Kh1 Nb4 22. Nxb4 Bxb4 23. d6 Qb6 24. Qd3 Qf2 25. Ne2 Bc6 26. Rg1 Nh5
27. Bc1 Bxg2+ {Velecky,V (2111)-Tesar,J (2094)/Nachod 2013/CBM 155 Extra/0-1})
13... Rfd8 14. Rfd1 Rac8 15. e4 $146 ({RR} 15. f4 Ng6 16. e3 Qb8 17. Qe2 Re8
18. h3 Bd8 19. Qf3 b5 20. cxb5 axb5 21. Qb7 Bb6 22. Qxb8 Rxb8 23. Nc2 d5 24.
Ne2 Ne7 25. Bd4 Nf5 26. Bxb6 Rxb6 27. Kf2 b4 28. Ncd4 Nd6 29. Rc7 Ra8 {Nowka,
O-Dizdarevic,E (2495)/Berlin West 1988/TD/0-1 (52)}) ({RR} 15. h3 Qb8 16. a4
Bf8 17. a5 Be8 18. Ra1 Nc6 19. Na4 Nxd4 20. Bxd4 Nd7 21. Qb2 Nc5 22. Nb6 Rc7
23. b4 Nd7 24. Rac1 Ne5 25. f4 Nc6 26. Bc3 Ne7 27. e4 Nc8 28. Bd4 f6 29. f5 Re7
{Terekhov,A (2318)-Schmitzer,P (2113)/Munich 2007/CBM 120 ext/1-0 (46)}) 15...
Qb6 16. Qe2 Be8 17. h3 Bf8 18. Kh1 Nc6 19. Nc2 Rc7 20. Ne3 Rdc8 21. Na4 Qa7 22.
Bxf6 gxf6 23. Qg4+ Bg7 24. Nc3 b5 25. Ncd5 Ne5 26. Nxf6+ Kh8 27. Qh4 h6 28.
Nxe8 Rxe8 29. Rxd6 bxc4 30. bxc4 Qc5 31. Rd8 Rxd8 32. Qxd8+ Kh7 33. Qd2 Rd7 34.
Qe2 Qb4 35. Rc2 Nc6 36. e5 Nd4 37. Qd3+ Kg8 38. Ng4 Qe7 39. Rb2 h5 40. Rb8+ Rd8
41. Rb7 Qc5 42. Nf6+ Bxf6 43. exf6 Qg5 44. Qd1 Qxf6 45. Qxh5 Qxf2 46. Qg5+ Kh7
47. Rxf7+ Qxf7 48. Be4+ Nf5 49. Qxd8 Qa7 50. Qd2 Qc5 51. Qf4 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Campora, Daniel Hugo"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "2325"]
[BlackElo "2415"]
[PlyCount "137"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Bd6 5. Nf3 Qe7 6. Bxc6+ ({RR} 6. Nc3 Nf6 7.
d4 O-O 8. Bxc6 bxc6 9. dxe5 Bxe5 10. Nxd5 cxd5 11. Nxe5 Qb4+ 12. Qd2 Qxd2+ 13.
Kxd2 Ne4+ 14. Ke1 f6 15. Nd3 Re8 16. f3 Nd6 17. Kf2 Nf7 18. Rhd1 Bb7 19. Nc5
Bc6 20. Bc3 Nd6 {San Emeterio Cabanes,J (2337)-Valero Pena,L (2041)/Madrid
2003/CBM 096 ext/1-0}) ({RR} 6. Qe2 a6 7. Bxc6+ bxc6 8. d3 Nh6 9. Nc3 Be6 10.
O-O-O f6 11. h3 Ba3 12. d4 Nf7 13. Kb1 Bd6 14. e4 dxe4 15. Nxe4 O-O 16. dxe5
Nxe5 17. Nxd6 cxd6 18. Nd4 Bd5 19. Rhe1 Qd7 20. Qf1 Rfe8 {Casas,F (1647)
-Velazquez,G (2025)/Villa Martelli 2011/EXT 2012/0-1}) 6... bxc6 7. d3 Nf6 8.
Nbd2 O-O $146 ({RR} 8... c5 9. e4 d4 10. Nc4 O-O 11. h3 Ba6 12. Nfd2 Bxc4 13.
Nxc4 a5 14. a4 Nd7 15. Qd2 f5 16. O-O f4 17. f3 Qg5 18. Nxd6 cxd6 19. Bc1 Rf6
20. Qf2 Rh6 21. Kh2 Qh5 22. Rh1 g5 23. Kg1 {Gonzalez Veiras,F-Suarez Prendes,R
(1882)/Ortigueira 2005/CBM 107 ext/1/2-1/2 (42)}) 9. e4 Re8 10. O-O Bg4 11. h3
Bh5 12. Re1 dxe4 13. dxe4 Rad8 14. Qe2 Nd7 15. Nc4 f6 16. Rad1 Bb4 17. c3 Bc5
18. Na5 Qe6 19. Nb7 Rb8 20. Nxc5 Nxc5 21. Ba3 Nd7 22. Rd2 Nb6 23. Bb4 Ra8 24.
Ba5 c5 25. c4 Red8 26. Red1 Rxd2 27. Rxd2 Qc6 28. Qd3 Bg6 29. Re2 Qe8 30. Qe3
Qc6 31. Ne1 Rd8 32. f3 Rd6 33. Nd3 Nd7 34. Be1 Bf7 35. Bf2 Be6 36. Nxc5 Nxc5
37. Qxc5 Rd1+ 38. Kh2 Qxc5 39. Bxc5 a6 40. Bb4 Kf7 41. Ba5 c6 42. Kg3 h5 43. h4
g5 44. hxg5 fxg5 45. Kf2 h4 46. Rc2 g4 47. fxg4 Bxg4 48. Ke3 Ke6 49. Rf2 Rg1
50. Bc3 h3 51. gxh3 Rg3+ 52. Kd2 Bxh3 53. Rf8 Rg2+ 54. Kc1 Rg5 55. Re8+ Kd7 56.
Ra8 Bg2 57. Rxa6 Bxe4 58. Ra7+ Kd6 59. b4 Bd3 60. c5+ Kd5 61. a4 Kc4 62. Be1
Rg2 63. Re7 e4 64. b5 cxb5 65. axb5 Kxc5 66. Bd2 Kc4 67. Rc7+ Kb3 68. Rc3+ Ka4
69. b6 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Cuellar, Jorge"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "2325"]
[BlackElo "2200"]
[PlyCount "129"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. b3 d5 2. Bb2 c5 3. e3 Nc6 4. Bb5 Bd7 5. f4 Nf6 6. Nf3 Rc8 ({RR} 6... a6 7.
Bxc6 Bxc6 8. O-O b5 9. Ne5 Bb7 10. d3 e6 11. Nd2 Be7 12. Ndf3 Nd7 13. Nxd7 Qxd7
14. Ne5 Qc7 15. f5 Bf6 16. fxe6 Bxe5 17. Rxf7 Bxh2+ 18. Kh1 Qg3 19. Qh5 O-O-O
20. Qxh2 Qxh2+ 21. Kxh2 {Guillen,J (2220)-Juarez Flores,G (2213)/San Salvador
2003/CBM 097 ext/1-0 (38)}) ({RR} 6... Qb6 7. Bxc6 Bxc6 8. Ne5 e6 9. O-O h5 10.
Qe2 Nd7 11. d4 f6 12. Nxd7 Bxd7 13. c4 Bc6 14. f5 O-O-O 15. fxe6 dxc4 16. Nd2
cxb3 17. axb3 Bb5 18. Nc4 Qxe6 19. Rxa7 Ba6 20. Ra8+ Kc7 21. Rxd8 {Brem,S
(2095)-Jiruse,J (1999)/Marianske Lazne 2013/CBM 152 Extra/1-0 (33)}) 7. O-O a6
8. Bxc6 Bxc6 9. Ne5 $146 ({RR} 9. d3 e6 10. Nbd2 Bd6 11. Ne5 O-O 12. Rf3 Nd7
13. Ng4 f6 14. Rg3 Kh8 15. Rh3 e5 16. f5 Kg8 17. e4 b5 18. Qe1 Re8 19. Qh4 Nf8
20. Bc1 Kf7 21. Rg3 Qa5 22. Nf3 Qc3 23. Rb1 Qxc2 {Halla,J (1931)-Havlik,J
(2160)/Kouty nad Desnou 2010/CBM 135 Extra/0-1 (46)}) 9... e6 10. d3 b5 11. a4
Qb6 12. axb5 axb5 13. Nxc6 Qxc6 14. Bxf6 gxf6 15. f5 e5 16. c4 dxc4 17. bxc4
Rd8 18. Qe2 b4 19. Nd2 Be7 20. Rfd1 O-O 21. Qg4+ Kh8 22. Qe4 Qxe4 23. Nxe4 Ra8
24. Kf2 Rfb8 25. Ke2 Kg7 26. Kd2 Kf8 27. Kc2 Ke8 28. Kb2 Kd7 29. Rxa8 Rxa8 30.
Ra1 Rxa1 31. Kxa1 Kc6 32. Kb2 Kb6 33. Kb3 Kc6 34. Ka4 Kb6 35. Nd2 Bf8 36. Ne4
Be7 37. Kb3 Kc6 38. Kc2 Kb6 39. Nd2 Ka5 40. Kb3 Kb6 41. g4 h6 42. h4 Kc6 43.
Kc2 Kb6 44. Nb3 Kc6 45. Kd2 Bd8 46. Ke2 Be7 47. Kf3 Bd8 48. Ke4 Be7 49. d4 exd4
50. exd4 cxd4 51. Kxd4 Bd8 52. c5 Kb5 53. Kd5 Ka4 54. Kc4 Bc7 55. c6 Bh2 56.
Nd2 Bc7 57. Ne4 Bh2 58. Nxf6 b3 59. Ne4 b2 60. Nd2 Ka3 61. Kc3 Be5+ 62. Kc2 Kb4
63. Nf3 Bf4 64. g5 hxg5 65. hxg5 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Garcia, Gildardo"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2325"]
[BlackElo "2440"]
[PlyCount "68"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Nf3 e4 5. Ng1 ({RR} 5. Ne5 Nf6 6. Bb5 Bd7 7.
Nxd7 Qxd7 8. O-O Bd6 9. f4 a6 10. Be2 O-O-O 11. a3 h5 12. b4 Qf5 13. b5 axb5
14. Bxb5 h4 15. Bxc6 bxc6 16. a4 h3 17. g3 Kd7 18. Nc3 Qg4 19. Qe1 Ra8 {
Richard,O-Johnson,C (1856)/Stillwater 2011/CBM 142 Extra/1-0 (38)}) 5... Nf6 6.
d4 Bd6 $146 ({RR} 6... Bg4 7. Qd2 h5 8. c4 h4 9. Nc3 Bb4 10. a3 Bxc3 11. Qxc3
Qd7 12. a4 O-O 13. h3 Bh5 14. Ba3 Rfe8 15. Ne2 a6 16. Nf4 Qf5 17. Rg1 Rad8 18.
Nxh5 Qxh5 19. Be2 Qf5 20. Bf1 Qh5 21. g3 {Gonzalez Rodriguez,J (2429)-Lacasta
Palacios,J (2157)/Barcelona 2009/CBM 131 Extra/1-0 (36)}) 7. c4 O-O 8. Nc3 Re8
9. Nge2 dxc4 10. bxc4 Ng4 11. h3 Nb4 12. Nf4 Nxe3 13. fxe3 Qh4+ 14. Kd2 Bxf4
15. Qe2 Bh6 16. Qe1 Qd8 17. Nd1 c5 18. a3 Nd3 19. Bxd3 exd3 20. dxc5 Qa5+ 21.
Bc3 Qxc5 22. g4 Bd7 23. g5 Bxg5 24. Rg1 g6 25. Qf2 Ba4 26. h4 Bh6 27. Rg3 Bg7
28. Bxg7 Kxg7 29. Nc3 Bb3 30. h5 Qxh5 31. Qg2 Qe5 32. Rh1 Bxc4 33. Rh4 Rac8 34.
Qh2 Bb3 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "2325"]
[BlackElo "2330"]
[PlyCount "72"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. b3 c5 2. Bb2 Nc6 3. e3 e5 4. Bb5 ({RR} 4. c4 Nf6 5. a3 d6 6. d3 Be7 7. Nf3
O-O 8. Be2 Re8 9. O-O Bf8 10. Nc3 h6 11. Nd5 Be6 12. e4 g6 13. b4 cxb4 14. axb4
Bxd5 15. cxd5 Nxb4 16. Qb3 a5 17. Bc3 Nd7 18. Bxb4 axb4 {Markowski,T (2606)
-Miezis,N (2540)/Dresden 2008/CBM 125 Extra/1/2-1/2}) 4... d6 ({RR} 4... Nge7
5. Nf3 e4 6. Ng5 d5 7. Qh5 Ng6 8. c4 h6 9. Nh3 d4 10. Qd5 Qf6 11. Qxe4+ Be7 12.
f4 O-O 13. Nf2 Nb4 14. O-O a6 15. Ba4 Rb8 16. Na3 Nh4 17. g3 b5 18. f5 bxa4 19.
gxh4 {Hindermann,F (2309)-Leutwyler,M (2033)/Switzerland 2013/CBM 153 Extra/0-1
}) 5. Bxc6+ $146 ({RR} 5. Ne2 Nf6 6. O-O Be7 7. f4 e4 8. Ng3 O-O 9. Nc3 d5 10.
Nh5 Be6 11. Na4 Nxh5 12. Qxh5 f5 13. Bxc6 bxc6 14. Ba3 c4 15. Bc5 Bxc5 16. Nxc5
Qd6 17. b4 a5 18. a3 axb4 19. axb4 d4 {Grabuzova,T (2332)-Malysheva,P (2283)/
St Petersburg 2005/CBM 106 ext/1-0 (45)}) ({RR} 5. Ne2 Nge7 6. O-O a6 7. Bxc6+
Nxc6 8. d4 cxd4 9. exd4 Be7 10. c4 Bg4 11. f3 Bf5 12. Nbc3 O-O 13. Nd5 Bf6 14.
f4 exd4 15. Nxd4 Bxd4+ 16. Bxd4 Nxd4 17. Qxd4 b5 18. Rfe1 Be6 19. Ne3 bxc4 {
Fries Nielsen,N (2393)-Kristensen,K (2244)/Denmark 2009/EXT 2010/1/2-1/2 (32)})
5... bxc6 6. d3 f5 7. Nd2 Nf6 8. Ne2 g6 9. Nc3 d5 10. Na4 d4 11. Qe2 Be7 12.
exd4 exd4 13. O-O O-O 14. Ba3 Bd6 15. Nf3 Re8 16. Qd2 Be6 17. Nxc5 Qb6 18. Na4
Qc7 19. Bxd6 Qxd6 20. Qg5 Bd5 21. Nxd4 Ng4 22. f4 Ne3 23. Rf2 c5 24. Nb5 Qc6
25. Nbc3 Ng4 26. Rd2 Qe6 27. Qh4 Qe3+ 28. Rf2 Qd4 29. Raf1 Bc6 30. h3 Nxf2 31.
Qxf2 Re3 32. Kh2 Rae8 33. Qd2 g5 34. Nb2 gxf4 35. Nc4 Rg3 36. Rxf4 Qxf4 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Minaya Molano, Juan M"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2325"]
[BlackElo "2320"]
[PlyCount "104"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 Nc6 5. e3 d6 6. Nge2 h5 7. h4 Nh6 8. d3 O-O
({RR} 8... Be6 9. Rb1 Qd7 10. b4 Nd8 11. b5 O-O 12. Ne4 a6 13. a4 axb5 14. axb5
f6 15. Qb3 Nhf7 16. N4c3 c6 17. Bd2 Kh7 18. Na4 Qc7 19. Nec3 f5 20. bxc6 bxc6
21. Qb6 Qxb6 22. Nxb6 Ra6 23. Ke2 {Szabo,L (2525)-Pribyl,J (2435)/Luhacovice
1971/MCD/1-0 (42)}) 9. a3 ({RR} 9. Rb1 Bg4 10. b4 Qd7 11. b5 Nd8 12. a4 Rc8 13.
Ba3 Re8 14. a5 Qf5 15. Be4 Qd7 16. Bg2 Kh8 17. Qa4 b6 18. Nd5 Bf5 19. Rd1 Rf8
20. Nb4 Be6 21. a6 f5 22. Bb2 Ng4 23. Nd5 Qf7 {Roman,R (2053)-Mamani,J (2157)/
Asuncion 2012/CBM 149 Extra/0-1 (45)}) 9... a5 $146 ({RR} 9... Bg4 10. Qc2 Qd7
11. b4 a6 12. Bb2 Rab8 13. Nd5 Nd8 14. e4 Be6 15. d4 Nc6 16. dxe5 Nxe5 17. Rd1
Rbd8 18. f4 Neg4 19. Bxg7 Kxg7 20. O-O Kh7 21. Qc3 Rfe8 22. Nd4 Bxd5 23. cxd5
Re7 24. f5 {Ardiansyah,H (2415)-Wu Shaobin (2430)/Singapore 1997/CBM 062 ext/
0-1 (72)}) 10. Bd2 Bf5 11. e4 Be6 12. f3 f5 13. Nd5 Qd7 14. Qa4 Kh7 15. Be3 Nf7
16. Ng1 Rfb8 17. Ne2 Qd8 18. Bh3 Ne7 19. Nec3 Nc8 20. Qb3 c6 21. Nb6 Nxb6 22.
Bxb6 Qd7 23. exf5 gxf5 24. f4 Nh6 25. O-O-O Ng4 26. d4 exd4 27. Bxg4 hxg4 28.
Bxd4 b5 29. Bxg7 Kxg7 30. Rhe1 Bxc4 31. Qc2 Re8 32. Qd2 Rxe1 33. Rxe1 Kf7 34.
Nd1 a4 35. Ne3 Bb3 36. Qd3 Re8 37. Rh1 Re4 38. h5 Qe6 39. Nd1 Bd5 40. Rg1 Bc4
41. Qc3 Bb3 42. Qa5 Qc4+ 43. Nc3 Qd3 44. Qa7+ Re7 45. Qf2 d5 46. Qd2 Qc4 47. h6
d4 48. h7 Kg7 49. Kb1 Kh8 50. Rc1 d3 51. Ka1 c5 52. Nxb5 Re2 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "2330"]
[BlackElo "2210"]
[PlyCount "45"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d3 d5 4. Nbd2 Nc6 5. g3 Bd6 6. Bg2 Nge7 7. O-O O-O 8. Re1
b6 9. Nf1 ({RR} 9. h4 Bc7 10. Nf1 dxe4 11. dxe4 Ba6 12. Be3 Ng6 13. N1d2 e5 14.
Bf1 Bc8 15. c3 Bg4 16. Qa4 Nge7 17. Nh2 Bd7 18. Qc2 Qc8 19. a4 Be6 20. Bc4 Rd8
21. Nhf3 {0-1 (21) Georgiev,K (2421)-Sethuraman,S (2546)/Golden Sands 2012/CBM
148 Extra}) 9... Bc7 ({RR} 9... Bb7 10. h4 Nd4 11. e5 Nxf3+ 12. Qxf3 Bc7 13.
Bg5 h6 14. Bf4 Ng6 15. Qg4 Qb8 16. Bxh6 Bxe5 17. h5 Ne7 18. Bg5 Nf5 19. c3 Kh8
20. f4 Bf6 21. h6 Nxh6 22. Qh5 Qd8 23. g4 Kg8 24. Bxh6 {Kratochvil,K (2198)
-Mojzis,J (2219)/Czechia 2012/EXT 2013/1-0 (34)}) 10. Nh4 $146 ({RR} 10. c3
dxe4 11. dxe4 Ba6 12. Qa4 Qc8 13. e5 Bd3 14. Qh4 Rb8 15. g4 Ng6 16. Qh5 Ngxe5
17. Qh3 Nxf3+ 18. Qxf3 Bxf1 19. Kxf1 Ne5 20. Qh3 Qa6+ 21. Kg1 Qd3 22. Be3 Rbd8
23. Qh5 Qc4 24. Bg5 f6 {Karthikeyan,T (2278)-Prasad,D (2395)/Chennai 2004/CBM
098 ext/0-1 (35)}) ({RR} 10. Ng5 h6 11. exd5 exd5 12. Nh3 Ng6 13. f4 Be6 14.
Qh5 Nge7 15. g4 Bc8 16. Ne3 Qd6 17. Nxd5 Nxd5 18. Qxd5 Bd7 19. Qxd6 Bxd6 20. c3
Rae8 21. Be3 Re7 22. Nf2 Rfe8 23. Ne4 Bc7 24. h3 c4 {Nepomniachtchi,I (2505)
-Negi,P (2349)/Kirishi 2005/CBM 107/1-0 (70)}) 10... Bb7 11. Qh5 Nd4 12. Ne3
dxe4 13. dxe4 Ng6 14. Nxg6 hxg6 15. Qg4 f5 16. Qxg6 Rf6 17. Qh5 Bxe4 18. c3
Bxg2 19. Nxg2 Nc2 20. Rd1 Qc8 21. Rb1 Qa6 22. Bg5 Rf7 23. Nh4 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Garcia, L."]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2330"]
[BlackElo "2370"]
[PlyCount "81"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. d3 dxe4 6. Nxe4 Be7 7. g3 Nf6 8. Nf2
b6 9. Bg2 Bb7 10. O-O Rc8 $146 ({RR} 10... O-O 11. c3 Qc7 12. a3 Rfd8 13. b4
Bf8 14. Qe2 g6 15. Bb2 Bg7 16. Rfe1 a6 17. Ne5 cxb4 18. axb4 b5 19. Nxc6 Bxc6
20. Bxc6 Qxc6 21. c4 Rdb8 22. Be5 Nd7 23. Bxg7 Kxg7 24. Qb2+ f6 25. Re4 {Haas,
P (2095)-Vojtek,V (2336)/Split 2012/CBM 149 Extra/0-1 (41)}) 11. Ne5 O-O 12. b3
Qc7 13. Nxc6 Bxc6 14. Bxc6 Qxc6 15. Bb2 Rfd8 16. Qe2 b5 17. c4 a6 18. Rae1 Rc7
19. g4 Ne8 20. g5 Nd6 21. Ng4 Nf5 22. Ne5 Qe8 23. Rf3 bxc4 24. bxc4 Nd4 25.
Bxd4 Rxd4 26. Rh3 Rxf4 27. Qh5 h6 28. gxh6 Rf5 29. Qe2 g6 30. h7+ Kh8 31. Rf1
Rxf1+ 32. Qxf1 f6 33. Qf4 Rb7 34. Qg3 g5 35. Rh6 Rb1+ 36. Kf2 Rb2+ 37. Ke3 Bd6
38. Nf7+ Qxf7 39. Qxd6 Qe8 40. Rxf6 Kxh7 41. Rxe6 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Martinez, Cristian"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "2330"]
[BlackElo "2310"]
[PlyCount "68"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N5c3 Be7 8.
Be2 O-O 9. Be3 b6 10. O-O Bb7 11. Nd2 Rc8 12. Qa4 $146 ({RR} 12. Rc1 Nb8 13. a3
Nbd7 14. b4 Qc7 15. f4 Qb8 16. Bf3 a6 17. Qe2 Rfe8 18. Kh1 g6 19. Qf2 Ba8 20.
Be2 Bc6 21. h3 b5 22. c5 dxc5 23. bxc5 Qb7 24. e5 Nd5 25. Nde4 Nxe3 26. Qxe3 f5
{Nanu,C (2457)-Franco Ocampos,Z (2525)/Ourense 2006/CBM 113 ext/1/2-1/2 (46)})
({RR} 12. f4 d5 13. cxd5 exd5 14. exd5 Nxd5 15. Nxd5 Qxd5 16. Bf3 Qd3 17. Qb3
Rfd8 18. Be4 Qd7 19. Qb5 Qe8 20. Rae1 Qf8 21. Nf3 Rc7 22. Rc1 Rdc8 23. Qd3 Nb4
24. Bxh7+ Kh8 25. Qf5 Rxc1 26. Bxc1 g6 {Gora,J (1958)-Barski,R (2238)/Krakow
2013/CBM 154 Extra/1-0 (33)}) 12... Qc7 13. Rac1 Qb8 14. f4 Rfd8 15. a3 Nd7 16.
Rfd1 Bf6 17. Nf3 Nc5 18. Bxc5 bxc5 19. Bd3 Nd4 20. Nd2 Bc6 21. Qa5 Rd7 22. Nb5
Bd8 23. Qa6 Rb7 24. Nxd4 cxd4 25. c5 dxc5 26. Rxc5 Rb6 27. Qc4 Be7 28. b4 Bxc5
29. bxc5 Rb2 30. Qxd4 Rd8 31. Qe3 Bb5 32. Nf1 Rb3 33. c6 Rbxd3 34. Rxd3 Rxd3
0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Minaya Molano, Juan M"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2330"]
[BlackElo "2320"]
[PlyCount "53"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. g5 hxg5 8. Bxg5
Nc6 9. Nb3 a6 10. Qe2 Qc7 11. O-O-O Bd7 12. Bg2 Be7 ({RR} 12... O-O-O 13. h4
Kb8 14. h5 Be7 15. f4 Ng8 16. Nd4 Bf6 17. Nf3 Nge7 18. Bxf6 gxf6 19. Qd2 Rh6
20. Qxd6 Qxd6 21. Rxd6 Kc7 22. e5 Rdh8 23. Rhd1 Bc8 24. Ne4 fxe5 25. Nxe5 Nxe5
26. fxe5 Nc6 27. Bf3 {Polgar,J (2630)-Salov,V (2710)/Buenos Aires 1994/CBM 044/
0-1 (48)}) 13. h4 O-O-O 14. Rh3 $146 ({RR} 14. h5 Kb8 15. Kb1 Bc8 16. f4 Nh7
17. Bxe7 Nxe7 18. a3 Nf6 19. Rd4 Nc6 20. Rd3 {1/2-1/2 (21) Hort,V (2595)
-Andersson,U (2590)/Skara 1980/EU-chT}) 14... Nh5 15. Qd2 f6 16. Be3 Ne5 17.
Bf1 Kb8 18. f4 Nc4 19. Bxc4 Qxc4 20. Qf2 d5 21. exd5 exd5 22. Ba7+ Ka8 23. Nxd5
Bxh3 24. Nb6+ Kxa7 25. Nxc4+ Ka8 26. Rxd8+ Bxd8 27. Qf3 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Ruiz, Alciguel"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "2330"]
[BlackElo "2200"]
[PlyCount "81"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 b5 7. O-O Bb7 8. Bf3
Nc6 9. Nxc6 dxc6 10. a4 Bd6 11. g3 ({RR} 11. axb5 cxb5 12. e5 Bxe5 13. Nxb5
axb5 14. Rxa8+ Bxa8 15. Bxa8 Nf6 16. h3 O-O 17. Bf3 b4 18. Bd2 Rd8 19. Qe1 Qxc2
20. Bxb4 Qxb2 21. Be7 Rb8 22. Qa5 h6 23. Rd1 Bd4 24. Qd2 Qxd2 25. Rxd2 Rb1+ {
Nisipeanu,L (2668)-Ivanchuk,V (2787)/Khanty Mansiysk 2007/CBM 122/1/2-1/2 (61)}
) 11... Nf6 12. Qe2 b4 $146 ({RR} 12... O-O 13. Bg2 b4 14. Nb1 a5 15. Nd2 Ba6
16. Nc4 Nd7 17. Qd3 Be5 18. Qb3 Nc5 19. Qa2 Bd4 20. Rd1 Rfd8 21. Bg5 Rd7 22. e5
Rb8 23. c3 bxc3 24. bxc3 Bxc3 25. Rxd7 Qxd7 26. Rc1 Bd4 27. Nxa5 {Vratonjic,S
(2355)-Robovic,S/Brezovica 1988/EXT 2009/0-1 (45)}) ({RR} 12... O-O 13. Bg2
Rfe8 14. Be3 h6 15. Nb1 Nd7 16. Nd2 e5 17. Nb3 Nb6 18. axb5 cxb5 19. Na5 Bc8
20. b3 Bb4 21. c3 Bxa5 22. b4 Na4 23. bxa5 Be6 24. Rfc1 Qxa5 25. c4 Rac8 26.
cxb5 axb5 27. Bd2 {Amanov,Z (2398)-Papin,V (2520)/Voronezh 2010/CBM 137 Extra/
0-1 (37)}) 13. Nb1 a5 14. Rd1 Be5 15. Bg2 Ba6 16. Qe1 Rd8 17. Rxd8+ Qxd8 18. c3
O-O 19. f4 Bc7 20. h3 Bb6+ 21. Kh2 c5 22. Nd2 Bd3 23. e5 bxc3 24. bxc3 Nd5 25.
Ne4 Qc7 26. Ba3 Rd8 27. Nd6 c4 28. Ra2 Ne3 29. Nb5 Nxg2 30. Rxg2 Qc6 31. Rd2
Qf3 32. Qd1 Qxd1 33. Rxd1 Bc2 34. Rxd8+ Bxd8 35. Nd6 Bxa4 36. Nxc4 Bc6 37. Kg1
f6 38. exf6 gxf6 39. Bc5 Bc7 40. Kf2 Kg7 41. Ke3 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Zapata, Alonso"]
[Result "1-0"]
[ECO "B46"]
[WhiteElo "2330"]
[BlackElo "2410"]
[PlyCount "107"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. g3 Nge7 7. Nb3 d6 8. a4
Bd7 ({RR} 8... b6 9. Bg2 Bb7 10. O-O Nc8 11. f4 Be7 12. f5 O-O 13. fxe6 fxe6
14. Qg4 Qd7 15. Bh3 Rxf1+ 16. Kxf1 Nd8 17. Nd4 Bf6 18. Nxe6 h5 19. Qxh5 Nxe6
20. Qg4 Bxc3 21. Qxe6+ Qf7+ 22. Qxf7+ Kxf7 23. bxc3 {Jansa,V (2540)-Taimanov,M
(2580)/Brno 1975/MCD/1/2-1/2 (32)}) ({RR} 8... b6 9. Bg2 Bb7 10. f4 Qc7 11. O-O
Nb4 12. Be3 Nec6 13. Qd2 Rd8 14. Qf2 Rd7 15. Bxb6 Qc8 16. Rad1 Be7 17. Rd2 Bd8
18. Rfd1 Bxb6 19. Qxb6 O-O 20. Nc5 Rc7 21. Nxb7 Rxb7 22. Qf2 Na5 23. Bf1 {
Prathamesh,S (2338)-Himanshu,K/Raipur 2002/CBM 087 ext/1-0 (38)}) 9. Bf4 $146 (
{RR} 9. a5 Nc8 10. Be2 Be7 11. Be3 O-O 12. O-O Bf6 13. Na4 Qe8 14. c4 N6e7 15.
Nd4 Bxd4 16. Bxd4 e5 17. Bc3 Bc6 18. Bd3 f5 19. f3 fxe4 20. fxe4 Rxf1+ 21. Kxf1
Kh8 22. b4 Ng8 23. Bd2 Nce7 {Short,N (2500)-Taimanov,M (2515)/Plovdiv 1984/MCD/
1-0 (41)}) ({RR} 9. a5 Nc8 10. Be3 Be7 11. Be2 O-O 12. O-O Qc7 13. Na4 Bf6 14.
f4 N6e7 15. c3 Bc6 16. Bf3 e5 17. Nb6 Nxb6 18. axb6 Qd7 19. Na5 Rad8 20. Bg4
Qe8 21. Nxc6 Qxc6 22. Qa4 Rfe8 23. Rfd1 g6 {Yakovich,Y (2470)-Zapata,A (2480)/
Bayamo 1990/CBM 018/0-1 (38)}) 9... Nc8 10. Bg2 Be7 11. O-O O-O 12. Qd2 Ne5 13.
Rfd1 Nc4 14. Qc1 Rb8 15. Nd2 b5 16. axb5 axb5 17. Nxc4 bxc4 18. e5 Rb6 19. exd6
Bxd6 20. Be3 Rb8 21. Qd2 f5 22. Ra6 Qc7 23. Rxd6 Qxd6 24. Qxd6 Nxd6 25. Rxd6
Be8 26. Bf1 Rxb2 27. Bxc4 Rxc2 28. Bxe6+ Bf7 29. Nd5 Bxe6 30. Rxe6 Rc4 31. Re7
h6 32. h4 Re4 33. Rd7 Rf7 34. Rd6 Kh7 35. h5 Re8 36. Nf4 Ra8 37. Ng6 Rc8 38.
Rd5 Re8 39. Nh4 Ref8 40. Kg2 f4 41. Bxf4 Ra8 42. Be3 Rc8 43. g4 Re8 44. Nf5 Ra8
45. Bd4 Rg8 46. Nh4 Ra8 47. Rd6 Rg8 48. Rg6 Rd8 49. Nf5 Rdd7 50. Bxg7 Rxf5 51.
gxf5 Rxg7 52. Rxg7+ Kxg7 53. Kf3 Kf7 54. Ke4 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Martinez, Cristian"]
[Black "Cuellar, Jorge"]
[Result "1/2-1/2"]
[ECO "C99"]
[WhiteElo "2310"]
[BlackElo "2200"]
[PlyCount "78"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Nc6 14. Nb3 a5 15.
Be3 Nb4 16. Bb1 a4 ({RR} 16... Bb7 17. a3 Na6 18. Nbd2 Rfc8 19. Bd3 b4 20. d5
Nc5 21. Rc1 Nfd7 22. Bb5 bxa3 23. bxa3 Qd8 24. Nc4 Nf6 25. Bxc5 Rxc5 26. Rb1
Ba6 27. Bxa6 Rxa6 28. Nfd2 Ra8 29. Qa4 Nd7 30. Nb3 Rcc8 31. Ncxa5 {Folkova,M
(2189)-Imeeva,A (2079)/Belgrade 2013/CBM 155 Extra/1-0 (71)}) 17. Nc1 $146 ({RR
} 17. Nbd2 Bb7 18. a3 Nc6 19. Bd3 Ba6 20. Rc1 Qb7 21. b4 exd4 22. Bxd4 Nd7 23.
e5 Nxd4 24. Nxd4 Nxe5 25. Be4 d5 26. Bxh7+ Kxh7 27. Rxe5 Bf6 28. Rh5+ Kg8 29.
Nc6 Rfd8 30. Nxd8 Rxd8 31. Qf3 Be7 {Ragozin,V-Lilienthal,A/Moscow 1940/URS-ch/
1/2-1/2 (40)}) ({RR} 17. Nbd2 a3 18. bxa3 Rxa3 19. Nb3 Be6 20. d5 Bd7 21. Qd2
Ra4 22. Rc1 Qb8 23. Qb2 Bd8 24. a3 Na6 25. Nbd2 Nh5 26. Bc2 Ra5 27. Nf1 Nc7 28.
Bd1 Nf4 29. Qd2 Na6 30. Ng3 Ng6 31. Qb2 Nc5 {Sharma,D (2361)-Rujevic,M (2261)/
Parramatta 2010/CBM 135 Extra/1-0 (64)}) 17... Bb7 18. a3 Na6 19. d5 Bc8 20.
Nd3 Bd7 21. Bc2 Rfc8 22. Rc1 Qb8 23. Bd2 Bd8 24. Nb4 Nc5 25. Bc3 Bb6 26. Nh2
Na6 27. Nxa6 Rxa6 28. Ng4 Nxg4 29. hxg4 Ra7 30. g3 Rac7 31. Kg2 Qa7 32. Qf3 Bd4
33. Rh1 Bxc3 34. Rxh7 Bd2 35. Rch1 Kf8 36. Rxg7 Kxg7 37. Rh7+ Kxh7 38. Qxf7+
Kh8 39. Qf6+ Kg8 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Martinez, Cristian"]
[Black "Garcia, Gildardo"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "2310"]
[BlackElo "2440"]
[PlyCount "129"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nf3 d6 3. d4 g6 4. Nc3 Bg7 5. e4 O-O 6. Be2 Bg4 7. Be3 Nc6 8. O-O
Nd7 9. Ne1 Bxe2 10. Nxe2 e5 11. d5 Ne7 12. g3 $146 ({RR} 12. f3 f5 13. Nd3 Nf6
14. Nc3 f4 15. Bf2 g5 16. c5 Ng6 17. Rc1 Rf7 18. Qb3 g4 19. Qxb7 g3 20. hxg3
fxg3 21. Bxg3 Nh5 22. Bh2 Ngf4 23. Nxf4 exf4 24. Ne2 Rb8 25. Qa6 {0-1 (25)
Kagan,S-Szabo,L/Winnipeg 1967/MCL}) ({RR} 12. Nd3 f5 13. f3 c5 14. b4 cxb4 15.
Nxb4 Rc8 16. Qb3 Nc5 17. Bxc5 Rxc5 18. Nd3 Rc7 19. c5 Nc8 20. cxd6 Nxd6 21. Nc3
Rc4 22. Rac1 Qa5 23. f4 fxe4 24. Nxe4 Rxe4 25. fxe5 Rxf1+ 26. Rxf1 Bxe5 {
Babujian,L (2439)-Petrosian,T (2606)/Yerevan 2008/CBM 122/0-1}) ({RR} 12. b4 f5
13. f3 Nf6 14. Nc3 Kh8 15. c5 Neg8 16. cxd6 cxd6 17. Rc1 Qd7 18. Qe2 fxe4 19.
fxe4 Ng4 20. Nc2 Rac8 21. Qd3 Rxf1+ 22. Rxf1 Qc7 23. Bd2 Bh6 24. Rf3 Qb6+ 25.
Be3 Nxe3 26. Nxe3 Qd4 {Fugger,C (1938)-Haselhorst,H (2089)/Neumarkt am
Wallersee 2012/EXT 2013/0-1 (43)}) ({RR} 12. f3 f5 13. Nd3 Nf6 14. Nc3 f4 15.
Bf2 g5 16. c5 Qe8 17. Qb3 g4 18. fxg4 Nxg4 19. h3 Nxf2 20. Rxf2 b6 21. Nb5 bxc5
22. Qc4 Rb8 23. Nxc7 Qd7 24. Ne6 Rfc8 25. Rc1 Kh8 26. Rc3 a5 {Averbakh,
Y-Shatskes,B/Moscow 1964/MCD/1/2-1/2 (32)}) 12... f5 13. Ng2 Nf6 14. Nc3 Qd7
15. f3 Rf7 16. c5 Raf8 17. cxd6 cxd6 18. Qe2 a6 19. a4 fxe4 20. fxe4 Qh3 21.
Nh4 h6 22. a5 g5 23. Qg2 Qd7 24. Nf5 Nxf5 25. Rxf5 Ng4 26. Rxf7 Rxf7 27. Bb6
Bf8 28. Rf1 Be7 29. Rxf7 Kxf7 30. Qf3+ Nf6 31. b4 Qc8 32. Qd3 h5 33. Kg2 h4 34.
Nd1 h3+ 35. Kf1 Ng4 36. Bg1 Kg6 37. Qc3 Qd7 38. Qd3 Qa4 39. Qf3 Nh6 40. Bb6
Qxb4 41. g4 Qb1 42. Kf2 Qc2+ 43. Kg3 Qg2+ 44. Qxg2 hxg2 45. Kxg2 Nxg4 46. h3
Nf6 47. Kf3 Nd7 48. Bc7 Kh5 49. Ne3 Nf6 50. Nf5 Ne8 51. Bb6 Bf8 52. Bd8 Bg7 53.
Be7 Bf6 54. Bf8 Bd8 55. Nxd6 Nxd6 56. Bxd6 Bxa5 57. Bxe5 b5 58. Bd4 Kg6 59. Kg4
Bb4 60. e5 a5 61. d6 a4 62. d7 Be7 63. Bc5 Bd8 64. Bb4 Bb6 65. e6 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Martinez, Cristian"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2310"]
[BlackElo "2325"]
[PlyCount "57"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. O-O Be7 8. Be3
Qc7 9. f4 Bd7 10. Qe1 Nc6 11. Kh1 h6 ({RR} 11... h5 12. Rd1 h4 13. h3 Rc8 14.
a3 Nxd4 15. Bxd4 Bc6 16. Bf3 e5 17. Be3 Kf8 18. Qf2 Kg8 19. Rd2 Rf8 20. Rfd1 g6
21. Bb6 Qb8 22. Ba7 Qc7 23. Bb6 Qb8 24. Ba7 Qc8 25. Rxd6 Bxd6 26. Rxd6 {
Zvjaginsev,V (2641)-Milov,V (2653)/Essen 2000/CBM 077/1-0 (46)}) ({RR} 11...
Nxd4 12. Bxd4 e5 13. fxe5 dxe5 14. Qg3 Bc6 15. Bxe5 Qb6 16. Rad1 Nd7 17. Rxf7
Qd8 {1-0 (17) Hernandez Estevez,Y (2230)-Ruiz Casado,F (2029)/Linares 2013/CBM
156 Extra}) 12. Rd1 $146 ({RR} 12. Qg3) 12... O-O-O 13. Qf2 Rdg8 14. Nxc6 Bxc6
15. Bb6 Qb8 16. b4 Nxe4 17. Nxe4 Bxe4 18. Qd4 f5 19. b5 axb5 20. Bxb5 Bc6 21.
Qc4 Kd7 22. Rfe1 d5 23. Rxd5+ exd5 24. Qxd5+ Qd6 25. Qxf5+ Ke8 26. Bc4 Bxg2+
27. Kxg2 Qxb6 28. Qc8+ Qd8 29. Rxe7+ 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Martinez, Cristian"]
[Black "Mendoza, Rafael"]
[Result "1-0"]
[ECO "C99"]
[WhiteElo "2310"]
[BlackElo "2200"]
[PlyCount "57"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. h3
d6 9. c3 Na5 10. Bc2 c5 11. d4 cxd4 12. cxd4 Qc7 13. Nbd2 Bd7 14. Nf1 Rac8 15.
Ne3 Rfe8 16. Bd2 ({RR} 16. d5 Bd8 17. b3 Qa7 18. Bb2 Bb6 19. Bd3 b4 20. a3 Bc5
21. Re2 Qb6 22. axb4 Bxb4 23. Ba3 Nb7 24. Bxb4 Qxb4 25. Nc2 Qc3 26. Bxa6 Rb8
27. Bc4 Nc5 28. Re3 Qb2 29. Nd2 Ra8 30. Rb1 Qa2 {Antal,T (2286)-Estrada Nieto,
J (2285)/Kecskemet 2011/CBM 144 Extra/1-0 (70)}) 16... Bf8 ({RR} 16... Nc6 17.
d5 Nd4 18. Bd3 Qa7 19. Nxd4 Qxd4 20. Bc3 Qb6 21. Nf1 {1/2-1/2 (21) Miles,A
(2570)-Smyslov,V (2600)/Ljubljana 1985/MCL}) 17. Rc1 Qb6 18. Nd5 $146 ({RR} 18.
dxe5 dxe5 19. Bc3 Bc6 20. Nd5 Bxd5 21. exd5 Rcd8 22. Nxe5 Rxd5 23. Qf3 b4 24.
Ng4 Rxe1+ 25. Rxe1 Nxg4 26. hxg4 Rd8 27. Be5 g6 28. Bf6 Rc8 29. Be4 Nc4 30. Bd5
Nd6 31. Be5 Qa7 32. Qf6 {1-0 (32) Massironi,M (2120)-Antonelli,F (2035)/Arvier
2008/CBM 124 Extra}) ({RR} 18. dxe5 dxe5 19. Bc3 Rcd8 20. Nd5 Nxd5 21. exd5 f6
22. Nh4 Re7 23. d6 Ree8 24. Qh5 g6 25. Nxg6 hxg6 26. Qxg6+ Bg7 27. Re3 Be6 28.
Bxa5 Qxd6 29. Rg3 {1-0 (29) Cardoso,R-Lagha,K/Munich 1958/MCD}) 18... Nxd5 19.
exd5 exd4 20. Rxe8 Rxe8 21. Ng5 g6 22. Qf3 f5 23. b3 Nb7 24. g4 Bg7 25. gxf5
Rf8 26. Nxh7 Rxf5 27. Bxf5 Bxf5 28. Ng5 Nc5 29. b4 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Mendoza, Rafael"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2200"]
[BlackElo "2210"]
[PlyCount "31"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. c3 Nf6 5. e5 Nd5 6. Nxd4 d6 ({RR} 6... Qc7 7.
Qe2 Nc6 8. Nxc6 Qxc6 9. Nd2 Qc7 10. g3 d6 11. exd6 Bxd6 12. Bg2 O-O 13. Nc4 Bc5
14. O-O b5 15. Nd2 a5 16. Nb3 Ba6 17. Nxc5 Qxc5 18. Be3 Qc7 19. Rac1 Nxe3 20.
Qxe3 Bb7 21. Rfd1 {Schmittdiel,E (2490)-Hoffmann,M (2452)/Germany 2000/CBM 076/
1/2-1/2 (42)}) 7. Bb5+ ({RR} 7. exd6 Bxd6 8. Bd3 O-O 9. O-O a6 10. Re1 Qc7 11.
h3 h6 12. Nd2 Nc6 13. N2f3 Nxd4 14. Nxd4 Bf4 15. Bc2 Bxc1 16. Rxc1 Nf6 17. Qf3
Qb6 18. Bb3 a5 19. Re2 a4 20. Bc2 Ra5 21. Rce1 Qc7 {Pusch,H (2139)-Hellwege,W
(2033)/Dresden 2013/CBM 155 Extra/1-0 (47)}) 7... Bd7 8. exd6 Bxd6 9. O-O $146
({RR} 9. Bxd7+ Qxd7 10. Nf5 Be5 11. c4 Nb4 12. Ne3 Qxd1+ 13. Kxd1 Nd3 14. Ng4
Nxb2+ 15. Kc2 Nxc4 16. Nxe5 Nxe5 17. Bb2 Nbd7 18. Nc3 O-O 19. Rac1 Nc4 20. Rhd1
Ndb6 21. Ba1 Rac8 22. Kb3 Na5+ 23. Kb4 Nc6+ {Wild,F-Palatkova,E (2025)/
Oberwart 1992/TD/0-1 (48)}) ({RR} 9. Bxd7+ Qxd7 10. O-O O-O 11. c4 Nc7 12. Nc3
a6 13. Na4 Qe7 14. Nb6 Ra7 15. Be3 Bc5 16. Na4 Bxd4 17. Bxd4 Rd8 18. Qg4 f5 19.
Qf4 Rxd4 20. Qxd4 Nc6 21. Qc5 Qxc5 22. Nxc5 b6 23. Nd3 Kf7 {Eidam,H (1992)
-Rohne,L (2131)/Leipzig 2008/CBM 123 Extra/1/2-1/2 (38)}) 9... O-O 10. c4 Nb6
11. Nc3 e5 12. Nc2 Be6 13. b3 a6 14. Be3 Bc7 15. Ba4 f5 16. Bc5 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Mendoza, Rafael"]
[Black "Garcia, Gildardo"]
[Result "1/2-1/2"]
[ECO "B53"]
[WhiteElo "2200"]
[BlackElo "2440"]
[PlyCount "51"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 a6 5. c4 Nc6 6. Qd2 g6 7. b3 Bg7 8. Bb2
Nf6 9. Nc3 O-O 10. h3 Qa5 11. Bd3 ({RR} 11. Rb1 Be6 12. Be2 b5 13. cxb5 axb5
14. Bxb5 Nxe4 15. Nxe4 Qxb5 16. Bxg7 Kxg7 17. Nc3 Qa6 18. Qe2 Nb4 19. Qxa6 Rxa6
20. a4 Bf5 21. Rd1 Bc2 22. Rc1 Bxb3 23. Rb1 Nd3+ 24. Kd2 Nc5 25. Rhe1 e5 {El
Taher,F (2481)-Georgiev,K (2686)/Moscow 2001/CBM 086/0-1}) ({RR} 11. Nd5 Nxe4
12. Qxa5 Nxa5 13. Nxe7+ Kh8 14. Bxg7+ Kxg7 15. Nxc8 Raxc8 16. Bd3 Nc5 17. Be2
Rfe8 18. Rd1 Nc6 19. Nd4 Nxd4 20. Rxd4 Re7 21. Kd2 Ne4+ 22. Rxe4 Rxe4 23. Bf3
Re7 24. a4 Rb8 25. b4 Kf8 {Fronda Pascua,J (2038)-Rodriguez Rueda,P (2225)/
Kocaeli 2013/CBM 156 Extra/0-1 (66)}) 11... Qh5 12. Be2 Bg4 13. O-O Bxf3 $146 (
{RR} 13... Bh6 14. Qd1 Bxh3 15. gxh3 Qxh3 16. Bc1 Ng4 17. Bxh6 Nxh6 18. Qd2 Ng4
19. Qf4 f5 20. Qg3 Qh6 21. exf5 gxf5 22. Qh4 Qg7 23. Qg5 Rf6 24. Qxg7+ Kxg7 25.
Rfd1 Rg8 26. Bd3 e5 27. Bc2 e4 28. Nd4 {Wagener,A (2325)-Tamin,U (2175)/
Yerevan 1996/EXT 1997/1-0 (39)}) 14. Bxf3 Qh4 15. Rae1 Bh6 16. Qc2 Nd4 17. Qd1
Nxf3+ 18. Qxf3 b5 19. cxb5 axb5 20. Nxb5 Rxa2 21. Bxf6 Qxf6 22. Qxf6 exf6 23.
Nxd6 Rb8 24. Rb1 Ra3 25. b4 Bf8 26. Nc4 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Mendoza, Rafael"]
[Black "Ruiz, Alciguel"]
[Result "1/2-1/2"]
[ECO "D87"]
[WhiteElo "2200"]
[BlackElo "2200"]
[PlyCount "30"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Bc4 Bg7 8.
Ne2 Nc6 9. Be3 O-O 10. O-O Qc7 11. Rc1 Rd8 12. Qe1 Qa5 13. Rd1 cxd4 ({RR} 13...
Bd7 14. f3 Rac8 15. dxc5 Ne5 16. Bd5 Qa6 17. Nc1 Nc4 18. Bd4 e6 19. Bxc4 Qxc4
20. Nb3 Ba4 21. Qg3 Bxb3 22. axb3 Qxb3 23. Rb1 Bxd4+ 24. cxd4 Qe3+ 25. Qf2 Qxd4
26. Rxb7 Qc3 27. h3 Rd2 28. Qg3 {Garces,J (2012)-Abreu Delgado,A (2470)/
Cartagena 2012/CBM 148 Extra/0-1 (57)}) 14. cxd4 Qxe1 15. Rfxe1 b6 $146 ({RR}
15... Na5) ({RR} 15... Bd7 16. Rb1 b5 17. Bxb5 Nxd4 18. Nxd4 Bxd4 19. Bxd4 Bxb5
20. Bc5 Bd3 21. Rbc1 Rd7 22. f3 Rc8 23. Bb4 Rc4 24. a3 Kf8 25. Kf2 Ke8 26. Rxc4
Bxc4 27. Rc1 Rc7 28. g4 Rc6 29. h4 Bb5 30. Rd1 {Banikas,H (2600)-Balogh,I
(2415)/Plovdiv 2008/CBM 124/1/2-1/2 (40)}) 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Mendoza, Rafael"]
[Black "Zapata, Alonso"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "2200"]
[BlackElo "2410"]
[PlyCount "69"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. d3 g6 3. f4 Bg7 4. g3 d6 5. Nf3 b6 6. Bg2 Bb7 7. O-O Nc6 8. Nc3 Qd7
9. Be3 f5 10. d4 ({RR} 10. exf5 gxf5 11. Re1 Nf6 12. h3 O-O-O 13. Bf2 e5 14.
Nh4 exf4 15. gxf4 d5 16. d4 Ne4 17. Nxe4 dxe4 18. Qh5 Bxd4 19. Qxf5 Rhg8 20.
Re2 e3 21. Qxd7+ Rxd7 22. Bxe3 Bxe3+ 23. Rxe3 Nd4 24. Rf1 Nf5 {Roos,D (2385)
-Zapata,A (2470)/New York 1984/MCD/0-1}) 10... Nf6 11. d5 Nb4 12. Bh3 e6 $146 (
{RR} 12... O-O 13. Ng5 h5 14. a3 Na6 15. Ne6 Ng4 16. Bxg4 hxg4 17. exf5 gxf5
18. Ne4 Nc7 19. Nxc7 Qxc7 20. Ng5 Rf6 21. c4 e6 22. Nxe6 Rxe6 23. dxe6 Re8 24.
Re1 Rxe6 25. Bf2 Bd4 26. Qa4 Bxf2+ 27. Kxf2 {Larino Nieto,D (2464)-Cheparinov,
I (2678)/Zafra 2009/CBM 131/1/2-1/2 (45)}) ({RR} 12... h5 13. a3 Ng4 14. Bxg4
hxg4 15. Ng5 Bxc3 16. bxc3 Na6 17. c4 Nc7 18. a4 e6 19. a5 exd5 20. exd5 b5 21.
a6 Bxa6 22. Rxa6 Nxa6 23. Qa1 O-O 24. Qxa6 bxc4 25. Bd2 Rab8 26. Bc3 Rb6 27.
Qa3 {Gonzalez,B (2405)-Murillo,A (2362)/San Jose Julio 2005/CBM 107 ext/1-0
(55)}) 13. a3 exd5 14. axb4 d4 15. Nxd4 cxd4 16. Bxd4 O-O 17. Re1 Rfe8 18. b5
Nxe4 19. Nxe4 Rxe4 20. Bxg7 Qxg7 21. Rxe4 Bxe4 22. c3 Qc7 23. Qd4 Re8 24. Bf1
Rc8 25. Rd1 d5 26. h4 Qc5 27. Ra1 Qxd4+ 28. cxd4 Rc7 29. Be2 Rc2 30. Kf1 Rd2
31. Rxa7 Rxd4 32. Rb7 Rb4 33. Rxb6 d4 34. b3 d3 35. Bd1 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Minaya Molano, Juan M"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "E99"]
[WhiteElo "2320"]
[BlackElo "2210"]
[PlyCount "91"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Nc6 8. d5
Ne7 9. Bd2 Ne8 10. Ne1 f5 11. f3 f4 12. b4 g5 13. Nd3 $146 ({RR} 13. c5 h5 14.
Nd3 Ng6 15. Rc1 Nh4 16. cxd6 cxd6 17. Nf2 Rf7 18. a4 Bf8 19. Kh1 Nf6 20. Be1
Rg7 21. Nd3 Nh7 22. Nf2 g4 23. fxg4 hxg4 24. Nxg4 Qg5 25. h3 Nf6 26. Bxh4 Qxh4
27. Nxf6+ Qxf6 {Cordi,D (2047)-Fezza,D (2070)/Campobasso 2010/EXT 2013/0-1})
13... Nf6 14. c5 Ng6 15. Rc1 h5 16. Nf2 Rf7 17. cxd6 cxd6 18. h3 Bf8 19. Nb5 g4
20. fxg4 hxg4 21. hxg4 Rh7 22. Rc3 Qb6 23. a4 Nxe4 24. Rh3 Rxh3 25. gxh3 Ng3
26. Bd3 e4 27. a5 Qd8 28. Bxe4 Nxf1 29. Qxf1 Qg5 30. Qb1 Ne5 31. Qc1 Bd7 32.
Bxf4 Qf6 33. g5 Qg7 34. Nd4 Rc8 35. Qe3 Qf7 36. Qg3 Ng6 37. Bd2 Bg7 38. Ne6 Be5
39. Qd3 Nf8 40. Ng4 Qh5 41. Qf3 Qh4 42. Nh6+ Kh8 43. Nf5 Qh7 44. Nxd6 Nxe6 45.
Bxh7 Bd4+ 46. Kg2 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Minaya Molano, Juan M"]
[Black "Campora, Daniel Hugo"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "2320"]
[BlackElo "2415"]
[PlyCount "140"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. c4 c6 5. cxd5 cxd5 6. Nc3 e6 7. Qb3 Qb6 ({RR
} 7... Bxf3 8. Bxf3 Qb6 9. Qxb6 Nxb6 10. d3 Ne7 11. O-O Nc6 12. Nb5 Kd7 13. Be3
Nc8 14. Rfc1 Nd6 15. Nd4 Be7 16. Nb3 Rhc8 17. Bd2 Bf6 18. Rab1 b6 19. e3 a5 20.
a4 Nb4 21. Be2 Rxc1+ 22. Nxc1 {Malakhov,V (2713)-Laznicka,V (2678)/Eilat 2012/
CBM 151/1/2-1/2 (40)}) 8. Qxb6 Nxb6 9. Nb5 $146 ({RR} 9. Ne5 Bh5 10. Nb5 Kd8
11. Bf3 Bg6 12. d3 a6 13. Nc3 f6 14. Nxg6 hxg6 15. e4 d4 16. Ne2 e5 17. Bd2 Na4
18. O-O-O Ne7 19. Kb1 Nc6 20. h4 Bd6 21. Bg4 Nc5 22. Nc1 Kc7 23. f4 Raf8 {
Meier,G (2610)-Denton,B (2288)/Greensboro 2013/CBM 156 Extra/1/2-1/2 (66)}) ({
RR} 9. d3 Rc8 10. Be3 Bd6 11. Nb5 Bb8 12. O-O Ne7 13. Rfc1 Rxc1+ 14. Rxc1 Nc6
15. Nfd4 Kd7 16. h3 Nxd4 17. Nxd4 Bh5 18. g4 Bg6 19. f4 f6 20. Nb3 Na4 21. f5
exf5 22. Bxd5 Nxb2 23. Bxb7 fxg4 {Benko,P-Bisguier,A/New York 1962/MCD/1/2-1/2
(40)}) 9... Kd8 10. d3 a6 11. Nbd4 Bxf3 12. Nxf3 Bb4+ 13. Bd2 Bxd2+ 14. Kxd2
Ne7 15. Nd4 Kd7 16. Rac1 Rhc8 17. Rxc8 Rxc8 18. Rc1 Rb8 19. Nb3 Kd6 20. Nc5 Nc6
21. e3 g5 22. f4 gxf4 23. gxf4 Rg8 24. Bf3 Kc7 25. Ke2 Nc8 26. Kf2 Nd6 27. a3
a5 28. Bh5 b6 29. Nb3 Kd7 30. Nd2 f6 31. Nf3 Rg7 32. h3 Rg8 33. Nh2 d4 34. e4
a4 35. Bf3 Na5 36. Ng4 Rf8 37. Ke2 Nb3 38. Rc2 h5 39. Nf2 Nc5 40. Bxh5 Rh8 41.
Bf3 Rh4 42. Rc1 Rxf4 43. Rg1 Rh4 44. Rg7+ Kd8 45. Bg2 e5 46. Ra7 Nc8 47. Rf7
Nd7 48. Bf3 Ke8 49. Rg7 Ne7 50. Rg1 Kf7 51. Rc1 Nc5 52. Rc4 Ng6 53. Bg4 Nf4+
54. Kd2 Rh8 55. Rb4 Rb8 56. Rc4 Ke7 57. Be2 Ng2 58. Ng4 Rh8 59. Rb4 Rxh3 60.
Rxb6 Nb3+ 61. Kc2 Rh1 62. Rb7+ Kd6 63. Rxb3 axb3+ 64. Kxb3 Re1 65. Bf3 Nh4 66.
Nh2 Nxf3 67. Nxf3 Re3 68. Nh4 Rxd3+ 69. Kc4 Rd2 70. Nf5+ Kc6 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Minaya Molano, Juan M"]
[Black "Garcia, L."]
[Result "0-1"]
[ECO "A77"]
[WhiteElo "2320"]
[BlackElo "2370"]
[PlyCount "54"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 c5 6. d5 O-O 7. Nf3 e6 8. O-O
exd5 9. cxd5 Re8 10. Nd2 Nbd7 11. a4 a6 12. Qc2 Qc7 13. b3 ({RR} 13. a5 b5 14.
axb6 Nxb6 15. Ra3 c4 16. Ndb1 Nfd7 17. Be3 Nc5 18. Nd2 f5 19. f3 fxe4 20. fxe4
Bd7 21. Bxc4 Nxc4 22. Nxc4 Rac8 23. Nd2 Qb8 24. Bxc5 Rxc5 25. Nf3 Qb4 26. Rxa6
Bb5 27. Rb6 Bd4+ {Petrosian,T (2605)-Boensch,U (2450)/Tallinn 1983/MCD/1/2-1/2
(40)}) ({RR} 13. Ra3 Rb8 14. a5 b5 15. axb6 Rxb6 16. Nc4 Rb4 17. Bf4 Bf8 18.
Rfa1 Nb6 19. b3 Nxc4 20. Bxc4 Bg7 21. Bd2 Qe7 22. Re1 Ng4 23. h3 Ne5 24. Bxa6
Bxa6 25. Rxa6 c4 26. bxc4 Nxc4 27. Bc1 Reb8 {Miedema,D (2381)-Simons,R (2069)/
Hilversum 2013/CBM 155 Extra/1-0 (32)}) 13... Ne5 14. Bb2 g5 $146 ({RR} 14...
Bd7 15. h3 g5 16. a5 Ng6 17. Rfe1 Nf4 18. Bf1 g4 19. hxg4 Nxg4 20. Nf3 Ne5 21.
Re3 Ng4 22. Ree1 Ne5 23. Nxe5 Bxe5 24. Re3 Kh8 25. Ne2 Nxe2+ 26. Bxe2 Qd8 27.
Bxe5+ dxe5 28. Qxc5 Qf6 29. Rf3 {Rubio Mejia,L (2386)-Galan Martin,P (2114)/
Padrun 2008/CBM 125 Extra/1-0 (45)}) 15. f4 gxf4 16. Rxf4 Ng6 17. Rff1 Ng4 18.
Nd1 N4e5 19. Ne3 Qe7 20. Rae1 Qg5 21. Nf5 Nf4 22. g3 Bxf5 23. exf5 Nxd5 24. Ne4
Qe3+ 25. Kh1 Nb4 26. Qb1 Nbd3 27. Nxd6 Nxe1 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Minaya Molano, Juan M"]
[Black "Mendoza, Rafael"]
[Result "1/2-1/2"]
[ECO "E68"]
[WhiteElo "2320"]
[BlackElo "2200"]
[PlyCount "58"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 d6 2. c4 Nf6 3. g3 e5 4. Bg2 g6 5. O-O Bg7 6. d4 Nbd7 7. Nc3 O-O 8. e4
exd4 9. Nxd4 Re8 10. h3 a5 11. Ndb5 Nc5 12. Re1 Be6 13. Bf1 $146 ({RR} 13. e5
dxe5 14. Qxd8 Raxd8 15. Nxc7 Re7 16. Nxe6 Rxe6 17. Be3 Nd3 18. Rad1 e4 19. Re2
Rde8 20. Nxe4 Nxb2 21. Rxb2 Nxe4 22. Rxb7 Nxg3 23. Rdd7 Ne2+ 24. Kh1 Ng3+ 25.
fxg3 Rxe3 26. Rxf7 Re1+ 27. Kh2 Bd4 {Liebert,H (2445)-Moehring,G (2450)/Halle
1974/MCL/1-0 (34)}) ({RR} 13. b3 Nfd7 14. Be3 Ne5 15. Re2 a4 16. Rb1 axb3 17.
axb3 Na6 18. Rd2 Qe7 19. Nd5 Bxd5 20. cxd5 Nd7 21. Bd4 Bxd4 22. Rxd4 Nf6 23. b4
Qd7 24. Nc3 Nb8 25. Rd3 Qe7 26. Re3 Nbd7 27. Nb5 Ne5 {Gagunashvili,M (2562)
-Jobava,B (2616)/Dubai 2004/CBM 101/1/2-1/2 (45)}) ({RR} 13. b3 a4 14. Rb1 axb3
15. axb3 Nfd7 16. Nd5 Bxd5 17. cxd5 Nf6 18. Nc3 Ng4 19. Bb2 Ne5 20. Bf1 g5 21.
Nb5 Ra2 22. Nd4 Qf6 23. Nf5 Nxe4 24. g4 Nc5 25. Kh1 h5 26. b4 hxg4 27. hxg4
Ncd7 {Gagarin,V (2329)-Kostov,G (2170)/Albena 2013/CBM 154 Extra/1/2-1/2 (47)})
({RR} 13. e5 dxe5 14. Qxd8 Raxd8 15. Nxc7 Re7 16. Nxe6 Rxe6 17. Be3 Nd3 18.
Red1 e4 19. Rab1 h6 20. b3 Ree8 21. Rd2 Ng4 22. hxg4 Bxc3 23. Re2 f5 24. Bxh6
Ne5 25. gxf5 gxf5 26. Bg5 Rd7 27. Bf6 Nf3+ {Hoyer,T-Nissen,C (2320)/Germany
1990/EXT 1997/1-0 (41)}) 13... Qc8 14. Kh2 Nfd7 15. Be3 a4 16. Bd4 Bf8 17. f4
f6 18. Qd2 Qb8 19. Rad1 Bf7 20. Bf2 Nb6 21. Qd4 Ne6 22. Qd2 Nc5 23. Na3 c6 24.
g4 Rd8 25. Bg3 d5 26. cxd5 cxd5 27. Qd4 dxe4 28. Qxf6 Rd6 29. Rxd6 Qxd6 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Minaya Molano, Juan M"]
[Black "Ruiz, Alciguel"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "2320"]
[BlackElo "2200"]
[PlyCount "58"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nh3 Nge7 8. O-O
Nd4 9. Be3 O-O 10. Rf2 ({RR} 10. g4 exf4 11. Nxf4 b5 12. Rb1 b4 13. Ncd5 Nxd5
14. Nxd5 Ne6 15. Nf4 a5 {1/2-1/2 (15) Bagirov,V (2530)-Pribyl,J (2405)/Berlin
1995/CBM 047 ext}) ({RR} 10. Nf2 Be6 11. Qd2 Rb8 12. Ncd1 f5 13. c3 Ndc6 14.
fxe5 Nxe5 15. Bh6 {1/2-1/2 (15) Dabo Peranic,R (2315)-Zivkovic,V (2396)/
Bosnjaci 2010/CBM 134 Extra}) 10... f5 $146 ({RR} 10... Qb6 11. Rb1 Bh6 12. Qd2
f6 13. a3 Qc7 14. Rbf1 Bg7 15. Nd1 Be6 16. c3 Qd7 17. fxe5 dxe5 18. cxd4 cxd4
19. Bg5 fxg5 20. Nxg5 Rxf2 21. Qxf2 Rf8 22. Qe2 Rxf1+ 23. Qxf1 Bb3 24. Bh3 Qc6
25. Nf2 {Olesen,M (2312)-Wiwe,A (2214)/Denmark 2009/EXT 2010/1-0 (45)}) 11. Qd2
fxe4 12. dxe4 Bg4 13. Raf1 Qd7 14. Ng5 h6 15. Nf3 Kh7 16. fxe5 Bxf3 17. Bxf3
dxe5 18. Bg2 Rxf2 19. Rxf2 Rd8 20. Qe1 b6 21. Qf1 Qe6 22. Bh3 Qg8 23. Qa6 Nec6
24. Qb7 Rf8 25. Nd5 Rxf2 26. Bxf2 Qf8 27. c3 Nf3+ 28. Kg2 Ng5 29. Qxc6 Qf3+ 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Ruiz, Alciguel"]
[Black "Campora, Daniel Hugo"]
[Result "0-1"]
[ECO "A87"]
[WhiteElo "2200"]
[BlackElo "2415"]
[PlyCount "72"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 f5 2. d4 Nf6 3. g3 g6 4. Bg2 Bg7 5. c4 O-O 6. O-O d6 7. b3 e5 ({RR} 7...
e6 8. Bb2 Nc6 9. Nbd2 Qe7 10. Qc2 e5 11. dxe5 dxe5 12. e4 f4 13. c5 Ng4 14.
Rad1 Be6 15. Qc3 Rad8 16. b4 Nd4 17. Nxd4 exd4 18. Qa3 Ne5 19. Ba1 Bg4 20. f3
Be6 21. gxf4 Rxf4 22. Nb3 {Duzhakov,I (2316)-Halkias,S (2588)/Plovdiv 2012/CBM
148/0-1}) 8. Nc3 e4 9. Ne1 c5 $146 ({RR} 9... c6 10. Nc2 d5 11. Ne3 Be6 12. Ba3
Rf7 13. Rc1 Na6 14. Qd2 Bh6 15. cxd5 Nxd5 16. Ncxd5 cxd5 17. f4 g5 18. Bh3 gxf4
19. Ng2 e3 20. Qd3 fxg3 21. hxg3 Qa5 22. Bd6 Qd2 23. Qxd2 exd2 24. Rcd1 {
Abhishek,K (2134)-Sriram,J (2436)/Mumbai 2012/CBM 148 Extra/1/2-1/2 (60)}) 10.
Nc2 Nc6 11. Bb2 Qe7 12. Qd2 Rd8 13. Rad1 d5 14. cxd5 Nxd5 15. Nxd5 Rxd5 16. e3
b6 17. Qe2 Bb7 18. Ba3 a5 19. Qc4 Nb4 20. Bxb4 cxb4 21. f3 Rc8 22. Qe2 Rd7 23.
Ne1 Rc3 24. fxe4 Bxe4 25. Nf3 Bh6 26. Rfe1 Rxe3 27. Qxe3 Bxe3+ 28. Rxe3 Qd6 29.
Ng5 Bxg2 30. Kxg2 h6 31. Nf3 f4 32. gxf4 Qxf4 33. Rde1 Rf7 34. h3 Kg7 35. d5 h5
36. Ne5 Qg5+ 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Ruiz, Alciguel"]
[Black "Cuellar, Jorge"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2200"]
[BlackElo "2200"]
[PlyCount "106"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 e6 3. g3 b6 4. Bg2 Bb7 5. O-O c5 6. Nc3 Be7 7. d4 cxd4 8. Nxd4
Bxg2 9. Kxg2 a6 10. e4 d6 11. Qe2 $146 ({RR} 11. Be3 O-O 12. Rc1 Qc7 13. Qe2
Qb7 14. f3 Nbd7 15. Kg1 Rac8 16. b3 Rfe8 17. Bd2 Nc5 18. Rce1 Bf8 19. b4 Ncd7
20. a3 Ne5 21. b5 Nxc4 22. a4 Nd7 23. Nc6 Nxd2 24. Qxd2 Nb8 25. Nxb8 Rxb8 {
Knauer,F (1802)-Wenzel,B (2019)/Hamburg 2011/CBM 143 Extra/0-1 (43)}) ({RR} 11.
Qa4+ Nfd7 12. Be3 O-O 13. Rac1 Qc7 14. Nce2 Qb7 15. f3 Ne5 16. b4 Nbd7 17. Qb3
Rfe8 18. a3 Rac8 19. Rc2 Bf8 20. Nf4 Nf6 21. h3 Ned7 22. Nd3 d5 23. e5 dxc4 24.
Rxc4 Rxc4 25. Qxc4 Nd5 {Hertneck,G (2560)-Dolmatov,S (2610)/Tilburg 1992/CBM
032/0-1 (60)}) ({RR} 11. b3 O-O 12. Ba3 Qc7 13. Rc1 Nbd7 14. f4 Rfe8 15. Qf3
Bf8 16. Rfd1 Rab8 17. g4 g6 18. g5 Nh5 19. Nde2 Nc5 20. Bxc5 Qxc5 21. Ng3 Nxg3
22. hxg3 Bg7 23. Na4 Qa3 24. Rc2 Rec8 25. Nc3 b5 {Harvan,R (2054)-Skara,V
(2205)/Banska Stiavnica 2013/CBM 155 Extra/0-1 (46)}) ({RR} 11. Be3 O-O 12. f3
Qc7 13. Rc1 Nbd7 14. Qd2 Rfe8 15. Rfd1 Bf8 16. b3 Rad8 17. Qf2 Qb7 18. Nde2 b5
19. cxb5 axb5 20. b4 Ne5 21. Bg5 d5 22. exd5 exd5 23. Nd4 Bxb4 24. Ncxb5 Be7
25. Nc7 Rf8 {Catelli,H (2212)-Larrea,M (2323)/Asuncion 2011/CBM 140 Extra/1-0
(55)}) 11... O-O 12. Rd1 Qc7 13. Be3 Nc6 14. Rac1 Rfd8 15. f3 Ne5 16. b3 Qb7
17. Bf2 Rac8 18. Na4 Nfd7 19. Nc3 Bf8 20. f4 Nc6 21. Kg1 Nc5 22. Nxc6 Qxc6 23.
Rd2 h6 24. Rcd1 Be7 25. Bd4 Nd7 26. Nd5 Bf8 27. Nb4 Qa8 28. Nd3 b5 29. cxb5
axb5 30. Nf2 Qb7 31. Bb2 Rc6 32. f5 Re8 33. f6 g6 34. Qe3 Kh7 35. g4 Rec8 36.
Nd3 Rc2 37. Ne1 Rxb2 38. Rxb2 Nxf6 39. Qf3 Nxe4 40. Rc2 Rxc2 41. Nxc2 d5 42. h4
Kg7 43. Kg2 Be7 44. h5 Ng5 45. Qg3 gxh5 46. gxh5 d4+ 47. Kg1 e5 48. Ne1 e4 49.
Kf1 Bf6 50. Qd6 Ne6 51. Rd2 d3 52. Rg2+ Bg5 53. b4 Qc8 0-1

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Ruiz, Alciguel"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2200"]
[BlackElo "2325"]
[PlyCount "99"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 g6 2. c4 Bg7 3. d4 Nf6 4. g3 O-O 5. Bg2 c5 6. O-O cxd4 7. Nxd4 Nc6 8.
Nc3 Nxd4 9. Qxd4 d6 10. Bg5 h6 11. Bxf6 Bxf6 12. Qd2 Bg7 ({RR} 12... Qa5 13.
Rac1 Be6 14. b3 Rab8 15. Rfd1 Kg7 16. Nd5 Qxd2 17. Rxd2 Rfc8 18. b4 b6 19. f4
a5 20. a3 Bxd5 21. Bxd5 e6 22. Bf3 d5 23. Rdc2 Bd4+ 24. Kg2 axb4 25. axb4 Be3
26. Rb1 dxc4 27. b5 {Batyte,D (2161)-Galojan,L (2320)/Belgrade 2013/CBM 155
Extra/0-1 (52)}) 13. Rac1 ({RR} 13. Rfd1 Be6 14. Bxb7 Rb8 15. Bd5 Bxd5 16. cxd5
Qa5 17. Rac1 Rfc8 18. Rc2 Rc5 19. Qe3 Rb7 20. h4 Bxc3 21. Rxc3 Rxc3 22. bxc3
Qxa2 23. Rd2 Qb1+ 24. Kg2 h5 25. Rd4 Qe1 26. Qd2 Qxd2 27. Rxd2 a5 {Rausis,I
(2496)-Arkell,K (2419)/Ascot 2011/CBM 142 Extra/1-0 (46)}) 13... Rb8 14. Rfd1
b6 15. b3 $146 ({RR} 15. Nb5 Qd7 16. e4 a6 17. Nc3 Rd8 18. b4 e6 19. a3 Bb7 20.
Qe3 Qc7 21. Na4 Ba8 22. b5 axb5 23. cxb5 Qa7 24. Qb3 Bf8 25. Rc2 Rbc8 26. Rdc1
Rxc2 27. Rxc2 d5 28. exd5 exd5 29. Rd2 Bg7 {Majul Martinez,I (2099)-Gonzalez,J/
El Sauzal 2003/CBM 097 ext/0-1 (38)}) 15... a6 16. a4 Be6 17. Nd5 Bd7 18. Nb4
Qc8 19. Nd5 Re8 20. h4 e6 21. Ne3 Bf8 22. Ng4 h5 23. Nf6+ Kh8 24. Nxe8 Qxe8 25.
e4 Bc6 26. Qd4+ Kg8 27. e5 Bxg2 28. Kxg2 Qc6+ 29. f3 dxe5 30. Qxe5 Rc8 31. Rc2
Bb4 32. Qg5 Qc7 33. Re2 Kg7 34. Qe5+ Qxe5 35. Rxe5 Kf6 36. Re3 Ke7 37. Red3 Rc7
38. Rd8 a5 39. Rb8 Bc5 40. g4 hxg4 41. fxg4 f5 42. g5 e5 43. Rd5 e4 44. Rh8 Ke6
45. Rh6 Rg7 46. h5 f4 47. Rxg6+ Rxg6 48. hxg6 f3+ 49. Kg3 Bf8 50. Kf4 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Ruiz, Alciguel"]
[Black "Martinez, Cristian"]
[Result "1/2-1/2"]
[ECO "E07"]
[WhiteElo "2200"]
[BlackElo "2310"]
[PlyCount "83"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 Be7 5. Bg2 O-O 6. O-O c6 7. b3 b6 8. Bb2
Nbd7 9. Nc3 Ba6 10. Nd2 b5 11. Re1 bxc4 12. bxc4 Rb8 13. Rb1 Qa5 $146 ({RR}
13... dxc4 14. Bxc6 Nb6 15. Nde4 Nfd5 16. Nc5 Bc8 17. a4 {1/2-1/2 (17) Nguyen
Thai Binh (2295)-Bakre,T (2361)/Vung Tau 1999/CBM 072 ext}) 14. Nb3 Qc7 15. c5
e5 16. e4 exd4 17. Qxd4 Rxb3 18. axb3 Bxc5 19. Qd2 Ng4 20. Nd1 Nde5 21. Rc1 Qd6
22. Rxc5 Qxc5 23. Bd4 Qd6 24. h3 Nd3 25. hxg4 Nxe1 26. Qxe1 dxe4 27. Be3 Bd3
28. Nc3 Re8 29. Na4 Qe6 30. Qd1 Rb8 31. Nc5 Qd5 32. Bf1 Bxf1 33. Qxf1 Rb5 34.
Qc1 h6 35. Qc2 Rb4 36. Kh2 a5 37. Qc1 f5 38. gxf5 Qxf5 39. Qd1 Rb5 40. Qd4 Kh7
41. Qd6 Qd5 42. Qe7 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Zapata, Alonso"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B80"]
[WhiteElo "2410"]
[BlackElo "2210"]
[PlyCount "38"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bd3 Nc6 7. Nxc6 bxc6 8.
O-O Be7 9. Qe2 ({RR} 9. Kh1 e5 10. Bc4 Be6 11. Bb3 O-O 12. Qd3 {1/2-1/2 (12)
Jakubiec,A (2526)-Kempinski,R (2617)/Czechia 2009/CBM 133 Extra}) 9... O-O ({RR
} 9... d5 10. b3 O-O 11. Bb2 Bb7 12. Rae1 Nd7 13. Na4 Nb6 14. Nxb6 axb6 15. a4
d4 16. c3 e5 17. Bc4 Bc5 18. Rd1 Re8 19. b4 Bd6 20. cxd4 exd4 21. Bxd4 Qc7 22.
Qg4 Bxh2+ 23. Kh1 Be5 24. Bxe5 {Liou,Y (2350)-Ludwig,D (2483)/Los Angeles 2012/
CBM 150 Extra/1-0}) 10. Na4 $146 ({RR} 10. e5 dxe5 11. Qxe5 Nd5 12. Rd1 Bd6 13.
Qe1 f5 14. Ne2 Qc7 15. h3 Bb7 16. c4 Nb4 17. Nd4 Rae8 18. Bb1 c5 19. Nb5 Bh2+
20. Kh1 Qc6 21. Qf1 Bb8 22. a3 Na6 23. Bc2 e5 24. Nc3 Qg6 {Castro Rojas,O
(2380)-Ornstein,A (2470)/Haifa 1976/EXT 2000/1-0 (38)}) ({RR} 10. e5 dxe5 11.
Qxe5 Bd6 12. Qe2 e5 13. Ne4 Nxe4 14. Qxe4 f5 15. Qxc6 Be6 16. Bc4 Re8 17. Rd1
Rc8 18. Bxe6+ Rxe6 19. Qd5 Qf6 20. Qb3 Kh8 21. Be3 Re7 22. Qd5 Rd8 23. Qa5 h6
24. Qxd8+ {1-0 (24) Laurusaite,B (1968)-Petrovs,A (1789)/Panevezys 2007/CBM
119 ext}) 10... d5 11. e5 Nd7 12. f4 Nc5 13. Nxc5 Bxc5+ 14. Kh1 f5 15. c4 Qb6
16. Rf3 a5 17. Rh3 g6 18. g4 Ra7 19. gxf5 gxf5 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Zapata, Alonso"]
[Black "Garcia, L."]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2410"]
[BlackElo "2370"]
[PlyCount "83"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 dxe5 8.
dxe5 Nb6 9. Qxd8+ Nxd8 10. Bd3 $146 ({RR} 10. Be2 Nc6 11. Nc3 Bf5 12. Be3 e6
13. Nh4 Bb4 14. Nxf5 exf5 15. O-O-O O-O 16. Nd5 Ba5 17. f4 Rfd8 18. Nxb6 Bxb6
19. Rxd8+ Nxd8 20. Bxb6 axb6 21. Kb1 Ne6 22. g3 Nd4 23. Bc4 Rd8 24. Rd1 Kf8 {
Godena,M (2420)-Antunes,A (2530)/Linares 1995/CBM 051/1-0 (59)}) ({RR} 10. Bb3
g6 11. Nd4 Bd7 12. Be3 Bg7 13. f4 O-O 14. Nc3 Nc6 15. Nxc6 Bxc6 16. O-O e6 17.
a4 Rfc8 18. a5 Nd7 19. Rfd1 Bf8 20. Ba4 Nc5 21. Bxc6 Rxc6 22. Nb5 a6 23. Nd6
Bxd6 24. Rxd6 Rxd6 {Nisipeanu,L (2665)-Dominguez Perez,L (2757)/Linares 2013/
CBM 156 Extra/1/2-1/2 (64)}) ({RR} 10. Bb5+ Nc6 11. Nc3 g6 12. O-O Bg7 13. Be3
O-O 14. Bxb6 axb6 15. Nd5 Ra7 16. Bxc6 bxc6 17. Nxb6 Bg4 18. Nc4 Rfa8 19. a3
Be6 20. Rac1 Rb7 21. b4 Bh6 22. Rc3 Bxc4 23. Rxc4 Rxa3 24. Nd4 e6 {Salgado
Lopez,I (2598)-Vachier Lagrave,M (2718)/Legnica 2013/CBM 155/1/2-1/2 (64)}) ({
RR} 10. Bb5+ Bd7 11. Nc3 e6 12. Bxd7+ Nxd7 13. Nb5 Bb4+ 14. Ke2 Ke7 15. a3 Bc5
16. b4 a6 17. bxc5 axb5 18. Be3 Nc6 19. Rhb1 b4 20. axb4 Rxa1 21. Rxa1 Nxb4 22.
Rb1 Na6 23. Rxb7 Rc8 24. Ra7 Naxc5 {Pavasovic,D (2425)-Sveshnikov,E (2565)/
Ljubljana 1996/CBM 053 ext/1/2-1/2 (47)}) 10... g6 11. O-O Bg7 12. Nc3 Bg4 13.
Bb5+ Nc6 14. Nd4 Bd7 15. Nxc6 bxc6 16. e6 fxe6 17. Be2 O-O 18. Ne4 Bd4 19. Bg4
e5 20. Bxd7 Nxd7 21. Ng5 Rab8 22. Rb1 c5 23. b3 Rb6 24. Bd2 Ra6 25. a4 Rb8 26.
a5 Rc6 27. Rfc1 a6 28. Rc4 h6 29. Nf3 g5 30. b4 g4 31. Ne1 e4 32. Nc2 e5 33.
Re1 h5 34. Rxe4 Rf6 35. Nxd4 cxd4 36. Rc7 Rd6 37. Kf1 Rb5 38. Re1 Kf7 39. Rec1
Ke6 40. R1c6 Rbd5 41. Rc1 Rb5 42. R1c5 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Zapata, Alonso"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1/2-1/2"]
[ECO "B99"]
[WhiteElo "2410"]
[BlackElo "2325"]
[PlyCount "139"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qf3
Be7 9. O-O-O h6 10. Bh4 Qc7 11. Bd3 g5 12. fxg5 Ne5 13. Qe2 Nh7 ({RR} 13...
Nfd7 14. Qh5 Nc5 15. gxh6 Ncxd3+ 16. cxd3 Qc5 17. Nf5 exf5 18. d4 Qb6 19. dxe5
Qe3+ 20. Kb1 Rxh6 21. Bf2 Rxh5 22. Bxe3 dxe5 23. Nd5 Bd8 24. Bb6 Bxb6 25. Nf6+
Ke7 26. Nxh5 fxe4 27. Ng3 e3 28. h3 {Ramadan,H (1922)-Elgabry,M (2351)/
Alexandria 2012/CBM 150 Extra/0-1 (36)}) 14. Bg3 hxg5 15. Rhf1 Nf8 ({RR} 15...
Nf6 16. Nf3 Nfd7 17. Kb1 b5 18. Qe3 Qa7 19. Qd2 Rg8 20. Be2 Rg7 21. Nxe5 dxe5
22. Bh5 Rh7 23. Rxf7 Rxf7 24. Rf1 Nf6 25. Bxf7+ Kxf7 26. Qxg5 Ke8 27. Bxe5 Qc5
28. Qg6+ Kd7 29. Bxf6 Qc4 30. Rd1+ {Ivanchuk,V (2711)-Vallejo Pons,F (2686)/
Monte Carlo 2005/CBM 105 ext/1-0}) 16. Kb1 $146 ({RR} 16. Qf2 Nfg6 17. Nf3 Rh7
18. Na4 Bd8 19. Qd4 Bd7 20. Nc3 Qb6 21. Be2 Qxd4 22. Rxd4 Be7 23. Na4 Bc6 24.
Nb6 Rd8 25. Nd2 Nf4 26. Rf2 d5 27. exd5 Bc5 28. dxc6 Bxd4 29. c7 Bxf2 30. Bxf2
Nxe2+ {Ree,H-Kavalek,L/Amsterdam 1968/MCL/0-1 (33)}) ({RR} 16. Nf3 Nfg6 17.
Bxe5 dxe5 18. g3 Bd7 19. Kb1 O-O-O 20. Rc1 Kb8 21. Nd1 f6 22. Ne3 Nf8 23. Ng4
Be8 24. Nd2 Bh5 25. h3 Nd7 26. Nb3 Rc8 27. Qg2 Qb6 28. Qd2 Rhd8 29. Qe1 Rh8 30.
Qd2 Rcd8 {Takemoto,H-Hamann,S (2470)/Buenos Aires 1978/EXT 2000/1/2-1/2 (70)})
16... Nfg6 17. Rf2 Bd7 18. Rdf1 O-O-O 19. h3 Rdg8 20. Nd1 Qb6 21. Nb3 Kb8 22.
Nd2 f6 23. Ne3 Rc8 24. Ng4 Nxg4 25. Qxg4 Ne5 26. Qe2 Qd4 27. Nf3 Qb6 28. Rd1
Nxd3 29. Qxd3 e5 30. c4 Be6 31. Rc2 Rc6 32. Bf2 Qc7 33. Rdc1 Rc8 34. b3 Qd7 35.
g4 Rh8 36. Ng1 Bd8 37. Rd1 b6 38. Be1 a5 39. Bf2 Qb7 40. Be3 Be7 41. Bc1 a4 42.
Ba3 Qa6 43. Bb4 Kb7 44. Ne2 Ra8 45. Bc3 Rc5 46. Nc1 b5 47. cxb5 Qxb5 48. Bb2
axb3 49. axb3 Qxd3 50. Rxd3 Rb5 51. Rdc3 Bd8 52. Rc6 Rb6 53. Rxb6+ Bxb6 54. Rd2
Kc6 55. Rc2+ Kd7 56. Rd2 Bf7 57. Nd3 Bxb3 58. Nb4 Ra4 59. Nd5 Bxd5 60. exd5 Bd4
61. Bxd4 Rxd4 62. Rxd4 exd4 63. Kc2 Ke7 64. Kd3 f5 65. Kc4 Kf7 66. Kd3 Ke7 67.
Kc4 f4 68. Kxd4 Kf7 69. Kd3 Kg6 70. Ke4 1/2-1/2

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Zapata, Alonso"]
[Black "Martinez, Cristian"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2410"]
[BlackElo "2310"]
[PlyCount "85"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. a4 b4 10. d4 Rb8 ({RR} 10... Bg4 11. d5 Nb8 12. cxb4 Nbd7 13. Na3 a5 14.
bxa5 Nc5 15. Bc2 Rb8 16. Nb5 c6 17. dxc6 Qxa5 18. Bd2 Qb6 19. c7 Ra8 20. b4 Ne6
21. Be3 Qb7 22. Qd3 Nxc7 23. Nxc7 Qxc7 24. a5 d5 25. Bb6 {Stolwijk,C (2019)
-Arp,F (2021)/Bussum 2013/CBM 154 Extra/0-1 (43)}) 11. h3 Nd7 ({RR} 11... bxc3
12. bxc3 Be6 13. d5 Na5 14. Ba2 Bd7 15. Ba3 Qe8 16. Qd3 Bxa4 17. Bb4 Nb7 18.
Qxa6 Bb5 19. Qa7 c5 20. dxc6 Bxc6 21. Nbd2 Qd8 22. Qe3 Qc7 23. Bb3 Ra8 24. Ra7
Rxa7 25. Qxa7 Rc8 26. Nc4 {Short,N (2663)-Werle,J (2607)/Wijk aan Zee 2009/CBM
129/1/2-1/2 (44)}) 12. a5 $146 ({RR} 12. Nbd2 Na5 13. Bc2 c5 14. Qe2 Bf6 15.
cxb4 Rxb4 16. d5 c4 17. Ra3 Nc5 18. Rc3 Bd7 19. Nxc4 Bxa4 20. Nxa5 Qxa5 21. g4
Bxc2 22. Qxc2 Qa4 23. g5 Bd8 24. Nxe5 Nxe4 25. Qxa4 Rxa4 26. Rc4 Rxc4 {Dalecky,
B (2150)-Jenicek,E (2059)/Czechia 2006/EXT 2009/1-0 (41)}) 12... Bf6 13. Be3
Re8 14. Nbd2 bxc3 15. bxc3 exd4 16. cxd4 Nb4 17. Qe2 d5 18. exd5 Bb7 19. Ra4
Nxd5 20. Bxd5 Bxd5 21. Qxa6 Ra8 22. Qd3 Bxf3 23. Nxf3 Nc5 24. Qa3 Nxa4 25. Qxa4
Re6 26. Rc1 Rea6 27. Bd2 Be7 28. Ne5 Bd6 29. Nc6 Qe8 30. Qb5 h6 31. d5 Qe4 32.
Be3 Kh7 33. Ra1 f5 34. Ra4 Qc2 35. g3 g5 36. Nd4 Qd1+ 37. Kg2 Kg6 38. Qd7 Rf8
39. Qe6+ Rf6 40. Qg8+ Kh5 41. Qe8+ Rg6 42. Nxf5 Qxd5+ 43. Re4 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Zapata, Alonso"]
[Black "Minaya Molano, Juan M"]
[Result "1-0"]
[ECO "B82"]
[WhiteElo "2410"]
[BlackElo "2320"]
[PlyCount "63"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f4 e6 7. Nb3 Be7 8. Bd3
a6 9. O-O ({RR} 9. Qf3 Qc7 10. O-O O-O 11. Bd2 b5 12. a3 Bb7 13. Qh3 b4 14.
axb4 Nxb4 15. Na5 Nxd3 16. cxd3 Rad8 17. Rfc1 Qd7 {1/2-1/2 (17) Stojanovski,D
(2436)-Cabrilo,G (2388)/Kragujevac 2013/CBM 156 Extra}) 9... b5 10. Qe2 Qc7 11.
Bd2 Bb7 $146 ({RR} 11... b4 12. Nd1 a5 13. Ne3 a4 14. Nc1 O-O 15. Kh1 Rd8 16.
Be1 d5 17. e5 Ne4 18. Qh5 f5 19. Ne2 Bc5 20. Rf3 Qf7 21. Qh3 Ba6 22. g4 Ne7 23.
Bh4 Bxe3 24. Rxe3 fxg4 25. Qxg4 Nf5 26. Rf3 {Zapata,A (2535)-Hort,V (2560)/
Tunis 1985/IZT/0-1 (40)}) ({RR} 11... b4 12. Nd1 a5 13. c3 Ba6 14. cxb4 axb4
15. Nf2 Bxd3 16. Nxd3 Qb6+ 17. Kh1 O-O 18. e5 Nd5 19. Qe4 Rad8 20. Rf3 dxe5 21.
fxe5 Na5 22. Nxa5 Qxa5 23. Rh3 g6 24. a3 Qa6 25. a4 Rd7 26. Rf3 {Zapata,A
(2425)-Vilela de Acuna,J (2440)/Havana 1983/MCL/1/2-1/2 (49)}) 12. Kh1 g6 13.
Rae1 O-O 14. Rf3 b4 15. Nd1 a5 16. c3 Nd7 17. Rh3 Bf6 18. Bb1 Rfe8 19. Ne3 Bg7
20. Ng4 Ba6 21. Qf2 Nf8 22. e5 Nd7 23. Qh4 dxe5 24. Qxh7+ Kf8 25. fxe5 Ncxe5
26. Rxe5 Bxe5 27. Bxg6 Ke7 28. Qxf7+ Kd6 29. Nxe5 Rf8 30. Bf4 Rxf7 31. Nxf7+
Ke7 32. Bxc7 1-0

[Event "COL-ch"]
[Site "Bogota"]
[Date "1980"]
[Round "?"]
[White "Zapata, Alonso"]
[Black "Ruiz, Alciguel"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2410"]
[BlackElo "2200"]
[PlyCount "93"]
[EventDate "1980"]
[EventRounds "11"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 e6 8. O-O
Be7 9. Qe2 O-O 10. Nc3 Nxc3 11. bxc3 b6 12. Bd3 Bb7 13. Qe4 g6 14. Bh6 Re8 15.
Rad1 Rc8 16. Qf4 dxe5 17. dxe5 Qc7 18. h4 Na5 $146 ({RR} 18... Bf8 19. Bxf8
Rxf8 20. h5 f5 21. hxg6 hxg6 22. Bb5 a6 23. Ba4 Rcd8 24. Qg5 Qf7 25. Rxd8 Nxd8
26. Rd1 b5 27. Nh4 Kg7 28. Rxd8 Rxd8 29. Qxd8 bxa4 30. c4 a3 31. Qd6 g5 32. Nf3
Bxf3 33. gxf3 {Grosar,A (2450)-Hanko,P (2212)/Bled 1999/CBM 069 ext/1-0 (40)})
19. h5 Bxf3 20. gxf3 Nc4 21. Bxc4 Qxc4 22. Rd4 Qxc3 23. Rd7 Qb4 24. Rd4 Qc5 25.
Kg2 Red8 26. Re4 Rd5 27. Rh1 Bf8 28. Bg5 Qc7 29. Bf6 Qd7 30. Qh4 Rc2 31. Rg4
Rdd2 32. hxg6 Rxf2+ 33. Qxf2 Rxf2+ 34. Kxf2 Bc5+ 35. Kg3 fxg6 36. Re4 h5 37.
Rh2 Qd1 38. Ree2 Qg1+ 39. Rhg2 Qh1 40. Rd2 g5 41. Bxg5 Kf7 42. Bf6 Be3 43. Rde2
Bc5 44. Re4 Bb4 45. Kf2 Bc5+ 46. Kg3 Bb4 47. Kf2 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Juan, G Arboleda"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2325"]
[BlackElo "2325"]
[PlyCount "30"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8.
Nb3 Nc6 9. Nbxd4 Nxd4 10. Qxd4 Qxd4 11. Nxd4 Bd7 12. Bf4 Rc8 13. Bb3 Bc5 14.
Nf3 ({RR} 14. Rad1) 14... O-O 15. Rad1 $146 ({RR} 15. Ne5 Rfd8 16. Nxd7 Rxd7
17. Rfe1 Rcd8 18. Kf1 Ng4 19. f3 e5 20. Bg5 Nxh2+ 21. Ke2 Be7 22. Bxe7 Rxe7 23.
Rad1 Rxd1 24. Rxd1 g5 25. Rh1 Nxf3 26. Kxf3 Kg7 27. Ke4 Kg6 28. g4 Rd7 {1-0
(28) Waitzkin,J (2290)-Vigorito,D/New York 1992/TD}) ({RR} 15. Ne5 Bb5 16. c4
Ba6 17. Rfd1 Rfd8 18. Be3 Bxe3 19. fxe3 Rxd1+ 20. Rxd1 Kf8 21. Ba4 Rc5 22. Nd3
Rxc4 23. b3 Rc3 24. Nb4 Rxe3 25. Nxa6 bxa6 26. Rd8+ Ke7 27. Ra8 Ne4 28. Rxa7+
Kf6 29. h3 Re2 {Mladenovic,J (2098)-Vasic,M (2096)/Herceg Novi 2001/CBM 081
ext/0-1 (70)}) 15... Rfd8 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "1"]
[White "Betancourt, David"]
[Black "Baquero, Luis A"]
[Result "0-1"]
[ECO "A90"]
[WhiteElo "2230"]
[BlackElo "2290"]
[PlyCount "89"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 e6 2. Nf3 d5 3. c4 c6 4. g3 f5 5. Bg2 Nf6 6. Bg5 ({RR} 6. b3 Bb4+ 7. Nbd2
dxc4 8. bxc4 Bc3 9. Rb1 Bxd4 10. Nxd4 Qxd4 11. Qc2 e5 12. e4 Na6 13. exf5 O-O
14. O-O Qg4 15. h3 Bxf5 16. hxg4 Bxc2 17. Rxb7 Nxg4 18. Bxc6 Rab8 19. Rxa7 Nb4
20. Ba3 {1/2-1/2 (20) Ocantos,M (2178)-Moser,E (2405)/Arvier 2007/CBM 118 ext})
({RR} 6. Ne5 c5 7. Bg5 Be7 8. O-O O-O 9. Nc3 Qb6 10. Na4 Qa5 11. Bxf6 Rxf6 12.
dxc5 Bxc5 13. cxd5 Bd7 14. Nxc5 Qxc5 15. dxe6 Bc6 16. Nxc6 Nxc6 17. Rc1 Qe5 18.
Bxc6 bxc6 19. Rxc6 Qxb2 20. Qd5 Qxe2 {Mladenov,G-Pecev,A (1682)/Skopje 2013/
CBM 153 Extra/1-0 (31)}) 6... Nbd7 $146 ({RR} 6... Bd6 7. O-O h6 8. Bxf6 Qxf6
9. cxd5 exd5 10. Nc3 O-O 11. e3 Nd7 12. Rb1 g5 13. Ne2 Rf7 14. b4 b5 15. Qc2
Bb7 16. Nc1 Nb6 17. Nd3 Nc4 18. Rb3 Raf8 19. Nc5 Bc8 20. Nd2 h5 21. Nxc4 {
Gandolphe,F-Bussachini,M (2130)/France 1999/EXT 2000/0-1 (43)}) ({RR} 6... Be7
7. cxd5 exd5 8. O-O O-O 9. Nc3 Nbd7 10. e3 Ne4 11. Bf4 Qe8 12. Nd2 Ndf6 13. f3
Nxd2 14. Qxd2 Qd8 15. e4 fxe4 16. fxe4 dxe4 17. Nxe4 Nxe4 18. Bxe4 Bh3 19. Rfe1
Bf6 20. Be3 Qd6 21. Qd3 {Moskalenko,A (2337)-Butenko,O (2079)/Kiev 2004/CBM
104 ext/0-1}) 7. O-O Bd6 8. Qc2 O-O 9. Nbd2 Qe8 10. Bxf6 Rxf6 11. e3 Qh5 12.
Rfb1 g5 13. Nf1 f4 14. exf4 gxf4 15. Qb3 dxc4 16. Qxc4 fxg3 17. hxg3 Nb6 18.
Qb3 Bd7 19. N3d2 Rf7 20. Ne4 Be7 21. a4 Rb8 22. Nfd2 Nd5 23. Nf3 Bf6 24. Re1 b6
25. Nc5 Re8 26. Nxd7 Rxd7 27. Ne5 Rc7 28. Nxc6 Rxc6 29. Bf3 Qf7 30. a5 Rd6 31.
axb6 axb6 32. Qd1 Bg7 33. Bh5 Qd7 34. Bxe8 Qxe8 35. Ra7 Rd7 36. Qa4 Rd8 37. Qc2
Nf6 38. Re5 Rc8 39. Qe2 Rc1+ 40. Kg2 Qc6+ 41. d5 Nxd5 42. Qe4 Ne3+ 43. fxe3
Bxe5 44. Ra8+ Kf7 45. Ra7+ 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "1"]
[White "Cuartas, Carlos Enrique"]
[Black "Zapata, Alonso"]
[Result "1/2-1/2"]
[ECO "B46"]
[WhiteElo "2360"]
[BlackElo "2500"]
[PlyCount "36"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Nxc6 bxc6 7. Bd3 d6 8.
O-O Nf6 9. Be3 ({RR} 9. f4 Nd7 10. b3 Be7 11. Bb2 Nc5 12. Kh1 O-O 13. Qd2 a5
14. Rf3 Nxd3 15. Rxd3 Qc7 16. Re1 Rb8 17. a4 Rd8 18. Rg3 f6 19. Qe2 Bf8 20. e5
f5 21. exd6 Qxd6 22. Rd1 Qc7 23. Rxd8 Qxd8 {Morozevich,A (2678)-Gavrikov,V
(2570)/Tallinn 2003/CBM 093/1-0 (37)}) ({RR} 9. f4 e5 10. Kh1 Be7 11. fxe5 dxe5
12. Qf3 O-O 13. b3 Be6 14. Be3 Qc7 15. Na4 c5 16. Nb2 Qc6 17. Bg5 h6 18. Bxf6
Bxf6 19. Bc4 Rad8 20. Rad1 Rd4 21. Bxe6 fxe6 22. Rxd4 exd4 23. Qg4 Rd8 {
Klymchuk,A (2127)-Kuciel,W (2036)/Gora Swietej Anny 2013/CBM 152 Extra/1-0}) ({
RR} 9. f4 e5 10. Kh1 Be7 11. fxe5 dxe5 12. Be3 O-O 13. Na4 Rb8 14. Qe1 Qc7 15.
b3 c5 16. Bg5 Bb7 17. Qh4 Qc6 18. Nc3 h6 19. Bxf6 Bxf6 20. Qf2 Rbd8 21. Nd5 Rd6
22. Qg3 Re8 23. Bc4 Kh8 {Van der Wiel,J (2545)-Zapata,A (2490)/Palma de
Mallorca 1989/TD/1-0 (43)}) 9... e5 10. Na4 $146 ({RR} 10. f4 Ng4 11. Qe1 Be7
12. h3 Nxe3 13. Qxe3 Rb8 14. Bc4 O-O 15. Bb3 Bf6 16. Rad1 Qe7 17. Rf3 exf4 18.
Qxf4 Be5 19. Qd2 Be6 20. Qe2 a5 21. Rdd3 Bxb3 22. cxb3 Rb4 23. Qd2 Rd8 24. a3
Rxb3 {Kagramanov,D-Kagramanov,D/Kitchener 2009/EXT 2011/0-1 (36)}) 10... Be6
11. c4 c5 12. Bg5 Be7 13. Qe2 Nd7 14. Bxe7 Qxe7 15. Rad1 O-O 16. Bc2 Rfd8 17.
b3 Nb8 18. f4 f6 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "1"]
[White "Garcia, Gildardo"]
[Black "Henao, Raul Fernando"]
[Result "1/2-1/2"]
[ECO "C60"]
[WhiteElo "2430"]
[BlackElo "2345"]
[PlyCount "106"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. c3 d6 5. d4 Bd7 6. O-O Bg7 7. Re1 Nge7 8. dxe5
({RR} 8. Na3 O-O 9. Nc2 a6 10. Bf1 Bg4 11. d5 Nb8 12. h3 Bxf3 13. Qxf3 f5 14.
Bg5 Bf6 15. Bxf6 Rxf6 16. Ne3 Nd7 17. Rad1 Kh8 18. Nc4 Qf8 19. exf5 gxf5 20.
Na5 Rb8 21. b4 Qh6 22. c4 Ng6 {Harandi,K (2425)-Dominguez,J (2235)/Novi Sad
1990/TD/0-1 (36)}) ({RR} 8. a4 O-O 9. dxe5 dxe5 10. Be3 h6 11. Nbd2 Be6 12. Bc5
Re8 13. Qe2 a6 14. Bc4 Qc8 15. Bxe6 Qxe6 16. Qc4 Qf6 17. a5 g5 18. h3 Ng6 19.
g3 Nd8 20. Be3 Ne6 21. Nh2 h5 22. Qe2 h4 {Lykov,V (2099)-Razgovorov,Y (2076)/
Barnaul 2013/CBM 153 Extra/1/2-1/2 (69)}) 8... dxe5 9. h3 $146 ({RR} 9. Be3 O-O
10. Nbd2 a6 11. Bc4 b5 12. Bb3 Qc8 13. Bc5 Be6 14. a4 Bxb3 15. Qxb3 Rb8 16.
axb5 axb5 17. Nf1 Re8 18. Ng5 Nd8 19. Red1 Nec6 20. Ne3 Bh6 21. Nf3 Ne6 22. Qd5
Qb7 23. Ng4 Bg7 {Deglmann,L (2255)-Dalinger,V (2215)/Bayern 1999/EXT 2000/0-1
(46)}) ({RR} 9. Nbd2 O-O 10. Nf1 a6 11. Ba4 b5 12. Bc2 Nc8 13. Be3 Qe7 14. b4
Rd8 15. Bc5 Qe8 16. Qe2 Be6 17. N3d2 Nd6 18. Bb3 Nb7 19. Bxe6 Qxe6 20. Nb3 Qc4
21. Qxc4 bxc4 22. Nbd2 Nxc5 23. bxc5 Na5 {Ahmad,N (2225)-Khan,M (2350)/New
Delhi 1983/EXT 2008/1/2-1/2 (49)}) 9... O-O 10. Be3 Qe8 11. a4 Rd8 12. Nbd2 h6
13. Bc5 Kh7 14. Qe2 Rg8 15. b4 Nc8 16. Bc4 Be6 17. b5 Na5 18. Bxe6 Qxe6 19. Bb4
Nb3 20. Nxb3 Qxb3 21. Nd2 Qe6 22. Nc4 Rd7 23. Rad1 Rgd8 24. Na5 b6 25. Nc6 Rxd1
26. Rxd1 Rxd1+ 27. Qxd1 a5 28. Ba3 Qa2 29. Be7 Qc4 30. Qf3 Qxa4 31. Qxf7 Qd1+
32. Kh2 Qd7 33. f4 exf4 34. e5 Qf5 35. Qxf5 gxf5 36. Ba3 Kg6 37. c4 Kf7 38. Kg1
Bf8 39. e6+ Ke8 40. Bc1 Bc5+ 41. Kf1 Nd6 42. Bxf4 Nxc4 43. Bxh6 a4 44. Ke2 Nd6
45. Kd3 Nxb5 46. g4 fxg4 47. hxg4 a3 48. Bg7 a2 49. Ba1 Be7 50. Kc4 Nd6+ 51.
Kd5 Nb5 52. Kc4 Nd6+ 53. Kd5 Nb5 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "1"]
[White "Gonzales, S."]
[Black "Agudelo, Antonio"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2305"]
[BlackElo "2305"]
[PlyCount "55"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Nf5 8. Bd3
h5 9. Qf4 cxd4 10. cxd4 Qc7 $146 ({RR} 10... Qh4 11. Qxh4 Nxh4 12. Bg5 Nf5 13.
Ne2 Nc6 14. c3 Na5 15. Nf4 Ne7 16. Be2 g6 17. Bf6 Rh7 18. Bb5+ Bd7 19. Bxd7+
Kxd7 20. Nh3 h4 21. Ke2 Ng8 22. Bg5 Rc8 23. Kd3 Rc6 24. g3 Nc4 25. Bxh4 {
Yanofsky,D-Uhlmann,W/Stockholm 1962/IZT/1-0 (41)}) ({RR} 10... Qh4 11. Nf3 Qxf4
12. Bxf4 Nc6 13. c3 Bd7 14. Rb1 b6 15. h3 Rc8 16. Ke2 Na5 17. g4 Ne7 18. Bd2
Nc4 19. Bxc4 dxc4 20. Ng5 Bc6 21. f3 Bd5 22. Ne4 Rc7 23. Nd6+ Kf8 24. a4 Nc8
25. a5 {Smirnov,P (2620)-Mesropov,K (2420)/chessassistantclub.com INT 2004/CBM
104 ext/1-0 (38)}) ({RR} 10... Qh4 11. Nf3 Qxf4 12. Bxf4 Nc6 13. c3 Bd7 14. Nd2
Na5 15. Ke2 Rc8 16. Rhc1 Ba4 17. Rab1 b6 18. Rb4 Bc6 19. a4 Kd7 20. Bb5 Bxb5+
21. axb5 Rc7 22. Nb3 Rc4 23. Rxc4 Nxc4 24. Ra1 Ra8 25. Bg5 {Eggink,M (2035)
-Musialkiewicz,P (2182)/Szczyrk 2013/CBM 153 Extra/1/2-1/2 (64)}) ({RR} 10...
Qh4 11. Qxh4 Nxh4 12. g3 Nf5 13. Ne2 Nc6 14. c3 Na5 15. Rb1 b6 16. O-O Bd7 17.
Bg5 Rc8 18. Rfc1 Nc4 19. Ra1 Ne7 20. f3 Nb2 21. Ba6 Rc7 22. Ra2 Nc4 23. a4 Na5
24. Kf2 Nec6 25. Rb1 {Mecking,H-Foguelman,A/Rio Hondo 1966/MCD/1-0 (67)}) 11.
Ne2 Nc6 12. O-O Nce7 13. a4 Bd7 14. Ba3 Ng6 15. Qd2 Bc6 16. Bxf5 exf5 17. Qg5
Qd8 18. Qxf5 Bd7 19. Qd3 Bxa4 20. f4 Bc6 21. f5 Nf8 22. Qg3 Rh7 23. Nf4 Qc7 24.
e6 fxe6 25. Bxf8 O-O-O 26. Nxe6 Qxg3 27. hxg3 Re8 28. Rxa7 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "1"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Suarez, Luis A"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "2375"]
[PlyCount "59"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 Nf6 3. g3 Nc6 4. Bg2 d6 5. e3 Be7 6. Nge2 O-O 7. O-O Be6 8. Nd5
({RR} 8. d3 Qd7 9. Nd5 Bh3 10. Nec3 Bxg2 11. Kxg2 Nxd5 12. Nxd5 Rae8 13. b4 a6
14. a4 Bd8 15. Bd2 Ne7 16. Nc3 f5 17. b5 Ng6 18. Qf3 c6 19. Rab1 f4 20. Qh5 f3+
21. Kh1 Nh8 22. bxc6 bxc6 {Kiyanovsky,V (2027)-Kamensky,D/Novokuznetsk 2012/
EXT 2013/0-1 (31)}) 8... Nd7 ({RR} 8... Bg4 9. f3 Bf5 10. e4 Be6 11. d4 exd4
12. Nxd4 Nxd5 13. Nxe6 fxe6 14. cxd5 exd5 15. exd5 Ne5 16. f4 Nd7 17. Be3 Bf6
18. Qc2 Re8 19. Bf2 a5 20. Rae1 Rxe1 21. Rxe1 b6 22. b3 Nc5 23. Bf3 {Likavsky,
T (2496)-Walek,M (2359)/Czechia 2008/EXT 2009/1/2-1/2 (71)}) 9. Nec3 $146 ({RR
} 9. a3 Rb8 10. d4 exd4 11. exd4 b5 12. Nxe7+ Nxe7 13. d5 Bf5 14. b4 bxc4 15.
Bg5 Bd3 16. Re1 f6 17. Bd2 Nb6 18. Nf4 Re8 19. Bh3 Bf5 20. Rxe7 Rxe7 21. Bxf5
Qe8 22. Bc3 Nd7 23. Qc2 Nf8 {Tuomainen,J-Hoiberg,N/Eckernfoerde 1974/EXT 2002/
1/2-1/2 (43)}) 9... a5 10. d3 Rb8 11. a3 Na7 12. b4 c6 13. Nxe7+ Qxe7 14. bxa5
Qd8 15. Bd2 Nf6 16. f4 exf4 17. Rxf4 Nc8 18. a6 d5 19. axb7 Rxb7 20. cxd5 Nxd5
21. Nxd5 cxd5 22. a4 Re8 23. a5 Na7 24. Qa4 Rb5 25. Rb4 Rxb4 26. Qxb4 Qa8 27.
Bc3 Nc6 28. Qc5 Na7 29. Bd4 Nc8 30. a6 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "1"]
[White "Velez, G."]
[Black "Mejia, Roberto"]
[Result "0-1"]
[ECO "E71"]
[PlyCount "70"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 c6 6. Be3 O-O 7. Bd3 Nbd7 ({RR}
7... a6 8. Nge2 e5 9. O-O Nbd7 10. d5 Nc5 11. Bc2 a5 12. a3 cxd5 13. cxd5 Bd7
14. b4 axb4 15. axb4 Rxa1 16. Qxa1 Na6 17. Qa3 Qc7 18. Bd3 Rb8 19. Rc1 Ne8 20.
Na4 Qd8 21. b5 Nac7 22. Qb4 {Aleksandrov,A (2598)-Levin,E (2505)/St Petersburg
2013/CBM 156 Extra/1/2-1/2 (41)}) 8. Nge2 e5 9. d5 cxd5 $146 ({RR} 9... Nc5 10.
Bc2 cxd5 11. cxd5 a6 12. Qd2 b5 13. b4 Ncd7 14. a4 bxa4 15. Nxa4 Bb7 16. O-O
Rc8 17. Bd3 Re8 18. g4 Qe7 19. Ng3 Kh8 20. Nb2 Nb8 21. Bg5 Qd7 22. Nc4 Qd8 23.
Qe3 Qe7 24. Qb6 {Klyszcz,M (2037)-Babichev,V (1764)/Nuremberg 2008/CBM 126
Extra/1-0 (41)}) ({RR} 9... c5 10. O-O a6 11. f4 exf4 12. Bxf4 Ne8 13. Rb1 Ne5
14. b3 Bd7 15. Bc2 Rb8 16. a4 Nc7 17. Qd2 b5 18. cxb5 axb5 19. Bh6 {1/2-1/2
(19) Reichart,M (1780)-Tschedemnig,H (1890)/Vorarlberg 1997/EXT 1999}) 10. cxd5
a6 11. g4 b5 12. Ng3 Nc5 13. Bc2 b4 14. Na4 Nxa4 15. Bxa4 Bd7 16. g5 Ne8 17.
Qb3 Bxa4 18. Qxa4 Rc8 19. Qxa6 Rc2 20. Qa4 Qc8 21. Qxb4 f5 22. gxf6 Bxf6 23.
Qb3 Bh4 24. Rg1 Kh8 25. Kd1 Rc7 26. Kd2 Nf6 27. f3 Bxg3 28. Rxg3 Nh5 29. Rag1
Nxg3 30. Rxg3 Qa6 31. a3 Qf1 32. Qd1 Qb5 33. b4 Rfc8 34. Rg2 Rc3 35. Bg5 Rd3+
0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "2"]
[White "Baquero, Luis A"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2290"]
[BlackElo "2325"]
[PlyCount "63"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. g3 g6 3. Bg2 Bg7 4. e4 d6 5. Ne2 O-O 6. Nbc3 e5 7. h3 Nc6 8. Be3
exd4 9. Nxd4 Bd7 10. O-O Re8 11. a4 a6 ({RR} 11... Nxd4 12. Bxd4 Bc6 13. Re1 a6
14. a5 Qd7 15. Qd3 Rad8 16. Nd5 Bxd5 17. exd5 Rxe1+ 18. Rxe1 Re8 19. Rb1 Qb5
20. Qc3 Nh5 21. Bxg7 Nxg7 22. Qxc7 Nf5 23. b4 Re7 24. Qc8+ Re8 25. Qc3 Qd7 26.
Qd3 {Chelushkina,I (2585)-Arsim,H (2540)/Manila 1992/TD/1-0 (37)}) 12. Kh2 Rb8
$146 ({RR} 12... Na5 13. Qd3 Rb8 14. b4 Nc6 15. Nxc6 Bxc6 16. b5 axb5 17. axb5
Bd7 18. Ra7 Be6 19. Rd1 Nd7 20. f4 b6 21. Nd5 Bxd5 22. Qxd5 Nc5 23. Qc6 Ne6 24.
e5 Bf8 25. Rd2 Qc8 26. h4 dxe5 27. fxe5 {Worek,J (2263)-Kupczyk,E (2123)/
Lubniewice 2005/CBM 108 ext/1-0 (46)}) ({RR} 12... Nb4 13. Qd2 c5 14. Nb3 Bc6
15. Rad1 Nd7 16. Bg5 Qb6 17. a5 Qc7 18. f4 h6 19. Bh4 Nf6 20. Bxf6 Bxf6 21.
Qxd6 Qxd6 22. Rxd6 Bxc3 23. bxc3 Nxc2 24. Nxc5 Ne3 25. Re1 Nxg2 26. Kxg2 Rad8 {
1/2-1/2 (26) Hernandez Guerrero,G (2523)-Tristan,L (2450)/Buenos Aires 2013/
CBM 155 Extra}) 13. Re1 Re5 14. Kg1 Qc8 15. g4 Re8 16. Nde2 b5 17. axb5 axb5
18. Ng3 b4 19. Nd5 Ne5 20. b3 h5 21. gxh5 Nxd5 22. exd5 Bxh3 23. Bd4 Bg4 24.
Qd2 Nf3+ 25. Bxf3 Rxe1+ 26. Rxe1 Bxf3 27. Qf4 Bxd5 28. hxg6 Qh3 29. gxf7+ Kf8
30. Bxg7+ Kxg7 31. Qg5+ Kh7 32. Qxd5 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "2"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Cuartas, Carlos Enrique"]
[Result "1-0"]
[ECO "C14"]
[WhiteElo "2330"]
[BlackElo "2360"]
[PlyCount "113"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. Qd2 a6 8. f4
c5 9. Nf3 Nc6 10. a3 cxd4 $146 ({RR} 10... O-O 11. dxc5 Nxc5 12. O-O-O b5 13.
Nd4 Bb7 14. Be2 Qc7 15. Nxc6 Bxc6 16. Qd4 Qb6 17. f5 exf5 18. Bf3 a5 19. Nxd5
Bxd5 20. Qxd5 Rac8 21. Qd6 Qa7 22. Kb1 b4 23. a4 b3 24. cxb3 Nxb3 25. e6 {
Antal,T (2356)-Lizak,P (2438)/Kecskemet 2012/CBM 149 Extra/1/2-1/2 (72)}) 11.
Nxd4 Ndxe5 12. O-O-O Nxd4 13. Qxd4 Nd7 14. Qxg7 Qf6 15. Qg3 b6 16. Qe3 O-O 17.
g4 Bb7 18. g5 Qg7 19. Rg1 Rfd8 20. Ne2 Nc5 21. Nd4 Rac8 22. Kb1 Re8 23. Qf2 Ne4
24. Qh4 Nd6 25. Bd3 Rc7 26. f5 exf5 27. Nxf5 Nxf5 28. Bxf5 Rc4 29. Qh6 Qxh6 30.
gxh6+ Kf8 31. Bxh7 Re6 32. Bd3 Rh4 33. h7 Reh6 34. Rg8+ Ke7 35. Re1+ Kd6 36.
Rg7 Bc6 37. Rxf7 Rxh2 38. Rg1 Bb5 39. Rg6+ Rxg6 40. Bxg6 Be8 41. Rf6+ Ke7 42.
Rxb6 Bxg6 43. Rxg6 Rxh7 44. Rxa6 Rh1+ 45. Ka2 Kd7 46. Kb3 Rh2 47. c3 Kc7 48. a4
Rh4 49. Rg6 d4 50. c4 Rh2 51. a5 Kb7 52. Rd6 Rd2 53. c5 d3 54. Ka3 Rd1 55. b4
Kc7 56. Kb2 Kb7 57. Kc3 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "2"]
[White "Henao, Raul Fernando"]
[Black "Betancourt, David"]
[Result "0-1"]
[ECO "B66"]
[WhiteElo "2345"]
[BlackElo "2230"]
[PlyCount "90"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8.
O-O-O a6 9. f3 h6 10. Be3 Qc7 ({RR} 10... d5 11. exd5 Nxd5 12. Nxd5 Qxd5 13.
Nxc6 Qxc6 14. Bd3 Qa4 15. Kb1 O-O 16. Rhe1 Rd8 17. Qf2 Bd7 18. Bb6 Rdc8 19. Re4
Qc6 20. Rc4 Qd5 21. Bh7+ Kxh7 22. Rxd5 exd5 23. Rxc8 Rxc8 24. g4 Rc6 25. Bd4 {
Ivanchuk,V (2695)-Salov,V (2710)/Tilburg 1994/CBM 044/1/2-1/2 (71)}) 11. Bd3
$146 ({RR} 11. Kb1 Nxd4 12. Bxd4 e5 13. Bf2 Be6 14. Bh4 g5 15. Bf2 O-O-O 16.
Nd5 Nxd5 17. exd5 Bf5 18. Bd3 Bg6 19. Bxg6 fxg6 20. Qd3 Rdg8 21. Rhe1 Kd7 22.
Re4 Ke8 23. Qb3 Rg7 24. Rd3 Bd8 25. Rc3 Qd7 {Dworakowska,J (2360)-Jakubowski,K
(2357)/Warsaw 2001/CBM 084/1-0 (45)}) ({RR} 11. g4 b5 12. Nxc6 Qxc6 13. Kb1 Bb7
14. Bg2 d5 15. exd5 Nxd5 16. Nxd5 Qxd5 17. Qe2 Qc4 18. Qf2 Bd5 19. b3 Qc6 20.
Bd4 f6 21. Rhe1 a5 22. Re2 Kf7 23. h4 a4 24. g5 hxg5 25. hxg5 e5 {Perez Gormaz,
M (2317)-Garcia Cardenas,P (2434)/Iquique 2013/CBM 153 Extra/1-0 (42)}) ({RR}
11. g4 Ne5 12. Kb1 Nc4 13. Bxc4 Qxc4 14. h4 Nd7 15. g5 h5 16. g6 Ne5 17. gxf7+
Nxf7 18. f4 Bd7 19. f5 Rc8 20. Bg5 Bf6 21. fxe6 Bxe6 22. Bxf6 gxf6 23. Nxe6
Qxe6 24. Nd5 Ne5 25. Rhf1 Ng4 {Battikhi,H (2210)-Powell,J/Thessaloniki 1988/TD/
1-0 (34)}) 11... Bd7 12. Rhe1 Na5 13. f4 b5 14. Kb1 b4 15. Nce2 d5 16. exd5
Nxd5 17. f5 e5 18. Ng3 exd4 19. Bxd4 f6 20. Bc4 Bc6 21. Bxd5 Bxd5 22. Qxb4 Nc6
23. Qc5 O-O-O 24. Qb6 Qxb6 25. Bxb6 Rd7 26. Nh5 Kb7 27. Nf4 Bxa2+ 28. Kxa2 Rxd1
29. Rxd1 Kxb6 30. Nd5+ Kc5 31. Nc7 Ne5 32. g3 Rc8 33. Ne6+ Kb6 34. c3 Rg8 35.
b4 a5 36. Nf4 Rd8 37. Nd5+ Kb5 38. Rd4 Rd7 39. c4+ Kc6 40. bxa5 Kc5 41. Re4 Ra7
42. Nf4 Nxc4 43. Ne6+ Kb4 44. Nf4 Rxa5+ 45. Kb1 Bd6 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "2"]
[White "Juan, G Arboleda"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "0-1"]
[ECO "C05"]
[WhiteElo "2325"]
[BlackElo "2375"]
[PlyCount "120"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Ng8 5. c3 b6 ({RR} 5... c5 6. Bd3 Qb6 7. Ne2
Bd7 8. a3 Nc6 9. Nf3 cxd4 10. Nexd4 Nge7 11. O-O Nxd4 12. Nxd4 Nc6 13. Nf3 Rc8
14. b4 a5 15. b5 Ne7 16. Be3 Qc7 17. Rc1 b6 18. h3 Qb7 19. Nd4 Ng6 20. f4 {
Vrabic,A (2119)-Rozic,S (1999)/Ptuj 2009/CBM 131 Extra/1/2-1/2 (40)}) 6. Nh3 ({
RR} 6. b4 c5 7. Ngf3 a5 8. b5 a4 9. dxc5 bxc5 10. Rb1 Nd7 11. Bd3 g6 12. O-O
Bg7 13. Re1 Ne7 14. Nf1 Qc7 15. Bf4 Bb7 16. h4 h6 17. N1h2 Nb6 18. Ng4 O-O-O
19. Bc2 Kb8 20. Ngh2 Nf5 {Pallardo Lozoya,J (2323)-Gonzalez Rodriguez,J (2447)/
Mislata 2006/CBM 113 ext/0-1 (70)}) 6... Qd7 ({RR} 6... Ne7 7. Nf4 Qd7 8. Nf3
c5 9. Nh5 h6 10. Bd3 Ba6 11. dxc5 bxc5 12. b4 cxb4 13. cxb4 Bxd3 14. Qxd3 Qa4
15. Bd2 Nec6 16. O-O Nd7 17. Rac1 g6 18. Nf6+ Nxf6 19. exf6 Bd6 20. Rfe1 Kd7
21. b5 {Kindermann,S (2425)-Mariotti,S (2475)/Wiesbaden 1981/MCD/1-0}) 7. Nf4
a5 $146 ({RR} 7... Ne7 8. Nh5 c5 9. Nf3 Ba6 10. dxc5 Bxf1 11. Rxf1 bxc5 12. b4
Ng6 13. bxc5 Nc6 14. Be3 Ngxe5 15. Nxe5 Nxe5 16. Bd4 f6 17. Qe2 O-O-O 18. Bxe5
fxe5 19. Rb1 Qa4 20. Rb4 Qa3 21. Qxe5 Qc1+ 22. Ke2 {Kulikova,L-Matveeva,S
(2100)/Nikolaev 1984/EXT 2013/1-0 (41)}) ({RR} 7... Ba6 8. Bxa6 Nxa6 9. b4 Nb8
10. Nb3 Nc6 11. O-O g6 12. Bd2 h5 13. a4 Nh6 14. Qe2 Nf5 15. a5 Bh6 16. g3 Kf8
17. f3 Ng7 18. axb6 cxb6 19. Ra6 Ne8 20. Rfa1 Qb7 21. b5 Ne7 22. Qd3 {Piza,V
(2316)-Lastovicka,J (2222)/Czechia 2000/EXT 2001/1-0 (74)}) 8. Nf3 Ba6 9. Bxa6
Nxa6 10. Nh5 c5 11. O-O O-O-O 12. Bg5 Re8 13. Qe2 Kb7 14. Rfd1 h6 15. Bh4 c4
16. Ne1 Rc8 17. Nc2 b5 18. Ne3 g6 19. Nf6 Nxf6 20. Bxf6 Rg8 21. b3 Qc6 22. a4
b4 23. bxc4 dxc4 24. d5 exd5 25. Nxd5 b3 26. Be7 Nc7 27. Nxc7 Bxe7 28. Nb5 Rcd8
29. Nd4 Qe8 30. e6 f5 31. Re1 Rxd4 32. cxd4 c3 33. Qf3+ Kb6 34. Qd5 b2 35. Qb3+
Bb4 36. Ra2 Ka7 37. Qc2 Qc6 38. e7 Qd7 39. Re5 Re8 40. Rxb2 cxb2 41. Qxb2 Rxe7
42. Qe2 Qc7 43. g3 Rxe5 44. dxe5 Qc1+ 45. Kg2 Qc6+ 46. f3 g5 47. Qd3 g4 48.
Qxf5 Qxf3+ 49. Qxf3 gxf3+ 50. Kxf3 Kb6 51. Ke4 Kc5 52. Kf5 Kd5 53. e6 Be7 54.
h4 h5 55. Kg6 Kxe6 56. Kxh5 Kf6 57. Kh6 Bf8+ 58. Kh7 Kf5 59. h5 Kg5 60. Kg8 Bh6
0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "2"]
[White "Mejia, Roberto"]
[Black "Garcia, Gildardo"]
[Result "1/2-1/2"]
[ECO "A29"]
[BlackElo "2430"]
[PlyCount "126"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nc6 2. c4 e5 3. Nc3 Nf6 4. d3 d5 5. cxd5 Nxd5 6. g3 Be7 7. Bg2 Nb6 8.
O-O O-O 9. b3 Re8 ({RR} 9... f5 10. Bb2 Bf6 11. Nd2 Be6 12. Nc4 Qd7 13. Rc1
Rab8 14. Qc2 Rfe8 15. Qb1 h5 16. e3 h4 17. Ne2 Bd5 18. e4 fxe4 19. Nxb6 axb6
20. Nc3 Bf7 21. Nxe4 h3 22. Bh1 Be7 23. Rfe1 Rbd8 24. Re3 {Hauchard,A (2513)
-Solozhenkin,E (2528)/France 2000/EXT 2001/1-0 (46)}) 10. Bb2 Nd4 $146 ({RR}
10... Bf8 11. Nd2 Be6 12. Rc1 Qd7 13. Re1 f6 14. Nc4 Nd5 15. a3 Rad8 16. b4
Nxc3 17. Bxc3 a6 18. Qc2 Bd5 19. Bb2 Bxg2 20. Kxg2 Qd5+ 21. Kg1 Qf7 22. Nd2 Rd5
23. Qc4 Red8 24. Ne4 h5 25. Nc3 {Sinanovic,M (2396)-Atalik,S (2584)/Vogosca
2007/CBM 118 ext/0-1 (33)}) ({RR} 10... Bf8 11. Rc1 Bg4 12. h3 Bh5 13. Ne4 Nd7
14. g4 Bg6 15. Ng3 a5 16. Nd2 Nc5 17. Nc4 Nd4 18. e3 Nde6 19. Nxe5 Nxd3 20.
Nxg6 hxg6 21. Rc2 Nxb2 22. Rxb2 c6 23. Qb1 Qh4 24. Rd1 Rad8 25. Rbd2 {Konjevic,
D (2324)-Vlatkovic,M (2339)/Cetinje 2013/CBM 155 Extra/1/2-1/2 (50)}) ({RR}
10... Bf8 11. Rc1 a5 12. Ne4 f6 13. d4 f5 14. Nc5 e4 15. Ne5 Nxe5 16. dxe5 Qxd1
17. Rfxd1 c6 18. f3 a4 19. fxe4 axb3 20. Nxb3 fxe4 21. Bxe4 Rxa2 22. Bd4 Nd7
23. Rc3 Rxe2 24. Bd3 R2xe5 25. Bc4+ {Martinez Romero,M (2368)-Paveto,K (2282)/
Mar del Plata 2012/EXT 2013/1-0 (56)}) 11. Re1 Nxf3+ 12. Bxf3 c6 13. a4 Bb4 14.
Qc2 a5 15. Red1 Bh3 16. Ne4 Nd5 17. Qc4 Qe7 18. Rac1 Rad8 19. Nc5 Nb6 20. Qc2
f5 21. e4 Qf7 22. exf5 Bxf5 23. Be4 Bxc5 24. Bxf5 Qxf5 25. Qxc5 Nd5 26. Qc4 e4
27. dxe4 Rxe4 28. Qc5 Rf8 29. Ba3 Rf6 30. Rd2 Qe6 31. Rf1 h5 32. Rd4 Re1 33.
Rd1 Rxd1 34. Rxd1 Qe2 35. Rf1 Rf3 36. Bc1 Rxb3 37. Qxa5 Rb1 38. Qd8+ Kh7 39.
Qg5 Qg4 40. Qd2 Ra1 41. Qc2+ Qg6 42. Qc4 Qf5 43. Qd4 Ra2 44. Bb2 Nf6 45. Qb4 b5
46. axb5 Qxb5 47. Qxb5 cxb5 48. Bxf6 gxf6 49. Rb1 Ra5 50. Kg2 Kg6 51. Kh3 Kf5
52. Kh4 Ke4 53. Kxh5 Kd3 54. Kg6 Kc2 55. Rb4 Kc3 56. Rb1 b4 57. Kxf6 b3 58. g4
Kc2 59. Rxb3 Kxb3 60. g5 Ra6+ 61. Kf7 Ra7+ 62. Kf6 Ra6+ 63. Kf7 Ra7+ 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "2"]
[White "Suarez, Luis A"]
[Black "Gonzales, S."]
[Result "1-0"]
[ECO "C78"]
[BlackElo "2305"]
[PlyCount "55"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. Re1 Bc5 8. c3
d6 9. d3 h6 10. Nbd2 O-O 11. Nf1 Re8 12. Ng3 d5 13. exd5 Nxd5 14. d4 Bb6 $146 (
{RR} 14... Bf8 15. dxe5 Na5 16. Bc2 Nb6 17. Nd4 c5 18. Qd3 g6 19. e6 f5 20.
Ngxf5 gxf5 21. Qg3+ Kh8 22. Qe5+ Kg8 23. Re3 Bg7 24. Rg3 Qg5 25. Rxg5 hxg5 26.
Qxf5 cxd4 27. Qf7+ Kh8 28. Qh5+ {1-0 (28) Bhuiyan,A (2113)-Carrasco,P (2208)/
Paris 2002/CBM 089 ext}) 15. dxe5 Na5 16. Bc2 Ne7 17. Qe2 Bd5 18. Be4 Bxe4 19.
Qxe4 Ng6 20. Qg4 Qd5 21. Nh5 Nc4 22. Bxh6 Nxb2 23. Bxg7 Qc5 24. e6 Qxf2+ 25.
Kh1 Qc2 26. exf7+ Kxf7 27. Ng5+ Kg8 28. Qd7 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "2"]
[White "Zapata, Alonso"]
[Black "Velez, G."]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2500"]
[PlyCount "45"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. O-O Nbd7 8. f4
b5 9. Bf3 Bb7 10. Qe2 Qc7 ({RR} 10... b4 11. Nd1 e5 12. Nf5 g6 13. fxe5 Nxe5
14. Nh6 a5 15. Nf2 Ba6 16. Nd3 Nfd7 17. Be3 Bg7 18. Rad1 Qe7 19. Qf2 Rc8 20.
Rfe1 Qf6 21. Nxe5 Nxe5 22. Ng4 Nxf3+ 23. gxf3 Qxb2 24. Rxd6 Bc4 25. Nh6 {
Aagaard,J (2477)-Vallejo Pons,F (2676)/Torrelavega 2007/CBM 119/1-0}) ({RR}
10... b4 11. Nd1 d5 12. e5 Ne4 13. Bxe4 dxe4 14. Be3 Bc5 15. Nb3 Be7 16. Nf2
O-O 17. Rfd1 Qc7 18. c3 bxc3 19. Rac1 Bd5 20. bxc3 Ba3 21. Rc2 Rfc8 22. Bd4 f5
23. exf6 gxf6 24. Nxe4 f5 25. Ng5 {Henao,R (2345)-Velez,G/Columbia 1988/TD/1-0
(33)}) 11. Kh1 ({RR} 11. a3 Rc8 12. Kh1 Be7 13. Bd2 O-O 14. Rae1 Nb6 15. e5
dxe5 16. fxe5 Nfd7 17. Bxb7 Qxb7 18. Qg4 Rfe8 19. Bh6 Bf8 20. Ne4 Nxe5 21. Nf6+
Kh8 22. Bxg7+ Bxg7 23. Qh4 h6 24. Rxe5 Nd5 25. Nxe8 Rxe8 {Powierski,E (2160)
-Mertens,P (1979)/Hannover 2012/CBM 150 Extra/1-0 (45)}) 11... Rc8 12. e5 $146
({RR} 12. a3 Be7 13. Bd2 O-O 14. Rae1 Nb6 15. Qf2 Nc4 16. Bc1 Nxa3 17. e5 Ne8
18. Qg3 Bxf3 19. Rxf3 Nc4 20. b3 dxe5 21. fxe5 Rd8 22. Ndxb5 axb5 23. bxc4 Qxc4
24. Rf4 Qc6 25. Ref1 f5 26. exf6 Nxf6 {Zozulia,A (2381)-Docx,S (2330)/Antwerp
2011/CBM 143 Extra/1/2-1/2 (57)}) 12... Bxf3 13. Nxf3 dxe5 14. fxe5 Ng4 15. Ng5
Nh6 16. Nge4 b4 17. Bxh6 gxh6 18. Nd5 Qxc2 19. Ndf6+ Nxf6 20. Nxf6+ Ke7 21.
Rad1 Bg7 22. Rd7+ Kf8 23. Ne4 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "3"]
[White "Acosta, Alejandro"]
[Black "Henao, Raul Fernando"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "2325"]
[BlackElo "2345"]
[PlyCount "53"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. O-O Be7 7. Re1 O-O 8. e5
Ne8 9. Bf4 b5 10. Bb3 d5 11. c3 Bf5 12. Nxd4 Nxd4 13. cxd4 Qd7 14. Nc3 c6 15.
Ne2 $146 ({RR} 15. Rc1 Nc7 16. Ne2 Ne6 17. Be3 f6 18. f4 fxe5 19. fxe5 Rac8 20.
Qd2 h6 21. Rf1 Bh7 22. Bc2 Rxf1+ 23. Rxf1 Bxc2 24. Qxc2 Bg5 25. Bxg5 hxg5 26.
b4 Rf8 27. Rxf8+ Kxf8 28. Kf2 Ke8 29. Ke3 Kd8 {Ligterink,G (2400)-Saren,I
(2350)/Buenos Aires 1978/EXT 2000/1/2-1/2 (36)}) 15... Nc7 16. Be3 f6 17. f4
fxe5 18. fxe5 Ne6 19. Ng3 Bg6 20. Qg4 Bb4 21. Rec1 Ba5 22. Bc2 Bxc2 23. Rxc2
Bb6 24. Rac1 Rac8 25. Nf5 Nc5 26. Nh6+ Kh8 27. dxc5 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "3"]
[White "Agudelo, Antonio"]
[Black "Suarez, Luis A"]
[Result "0-1"]
[ECO "A16"]
[WhiteElo "2305"]
[PlyCount "150"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 c6 7. d3 Qa5 8. h3 ({
RR} 8. Qd2 Qh5 9. Qg5 Qxg5 10. Bxg5 a5 11. Rab1 Nbd7 12. b3 Re8 13. Rfc1 Nc5
14. a3 h6 15. Be3 e5 16. Nd2 Be6 17. Rc2 Nfd7 18. Nde4 Nxe4 19. Nxe4 Bf8 20.
Nc3 f5 21. b4 axb4 22. axb4 Nf6 {Slobodjan,R (2561)-Arencibia Rodriguez,W
(2529)/Varadero 2000/CBM 077/1/2-1/2}) 8... h6 $146 ({RR} 8... Qh5 9. Ng5 Na6
10. Rb1 Bh8 11. g4 Nxg4 12. hxg4 Bxg4 13. Nf3 f5 14. d4 e5 15. dxe5 dxe5 16.
Nh2 e4 17. Nxg4 Qxg4 18. Qd6 Rae8 19. Qf4 Qh5 20. Qh6 Qg4 21. Qf4 Qh5 22. Qg5
Qxg5 23. Bxg5 {Schussler,H (2495)-Backwinkel,P (2275)/Germany 1981/GER-chT/1-0
(48)}) ({RR} 8... d5 9. e4 dxc4 10. dxc4 Be6 11. Qe2 Qa6 12. Nd2 Nfd7 13. Nd1
Nb6 14. Ne3 N8d7 15. Rd1 Ne5 16. Bf1 Rad8 17. Nb3 Bxc4 18. Nxc4 Qxc4 19. Rxd8
Rxd8 20. Na5 Qb4 21. Nxb7 Rb8 22. a3 Qb5 23. Qxb5 {Gutierrez Olivares,D (2366)
-Alvarado Diaz,A (2313)/Vecindario 2013/CBM 155 Extra/0-1 (39)}) 9. Bd2 Qc7 10.
b4 Nbd7 11. a4 e5 12. Ne1 Re8 13. a5 a6 14. Nc2 Nf8 15. Be3 Be6 16. Qd2 Kh7 17.
Rfc1 Nh5 18. b5 f5 19. bxc6 bxc6 20. Bb6 Qd7 21. Nb4 Rec8 22. Kh2 Bf6 23. e3 g5
24. Qe2 Ng7 25. d4 e4 26. d5 cxd5 27. Nbxd5 Bxc3 28. Nxc3 Bxc4 29. Qd2 Qe6 30.
Bd4 Nd7 31. Na4 Bd3 32. Nb6 Rxc1 33. Rxc1 Rf8 34. Qb2 Rf7 35. Na8 Ne5 36. Nc7
Qf6 37. Nd5 Qe6 38. Nb4 Bb5 39. Bxe5 dxe5 40. Rc5 Re7 41. Qc3 h5 42. Qc2 Rd7
43. Nc6 Rc7 44. Nd8 Rxc5 45. Qxc5 Qa2 46. Qc7 Bc4 47. Kg1 Qa1+ 48. Kh2 Qa2 49.
Nb7 h4 50. g4 Bf1 51. Bxf1 Qxf2+ 52. Bg2 fxg4 53. Qc4 gxh3 54. Qxe4+ Kh6 55.
Qc6+ Kh7 56. Qe4+ Kh6 57. Qc6+ Kh7 58. Qe4+ Kh8 59. Nd6 hxg2 60. Qxg2 Qxg2+ 61.
Kxg2 Kh7 62. Nf7 Kg6 63. Nxe5+ Kf5 64. Nd7 Ne6 65. Kh3 Ke4 66. Kg4 Kxe3 67. Nf6
Kf2 68. Kf5 Nd4+ 69. Kxg5 h3 70. Kf4 h2 71. Ng4+ Kg2 72. Nxh2 Kxh2 73. Ke4 Nc6
74. Kd5 Nxa5 75. Kc5 Nb7+ 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "3"]
[White "Betancourt, David"]
[Black "Mejia, Roberto"]
[Result "0-1"]
[ECO "E69"]
[WhiteElo "2230"]
[PlyCount "126"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Nc3 g6 5. g3 Bg7 6. Bg2 c6 7. O-O O-O 8. h3
e5 9. e4 Qc7 10. Be3 Re8 11. Qc2 Nh5 ({RR} 11... h6 12. Rad1 Nh5 13. Qd2 g5 14.
d5 c5 15. h4 f6 16. Qe2 Nf4 17. gxf4 exf4 18. Bc1 Ne5 19. Nxe5 fxe5 20. Qh5 Qe7
21. hxg5 hxg5 22. f3 Rf8 23. Kf2 Bd7 24. Rh1 Qf6 25. Bh3 Bxh3 26. Rxh3 {
Gagarin,V (2372)-Jakl,A (2048)/Olomouc 2012/CBM 149 Extra/1-0 (31)}) 12. Rfd1
$146 ({RR} 12. Rfe1 Nf8 13. Rad1 f5 14. dxe5 dxe5 15. Bc5 Qf7 16. Bd6 h6 17.
Qe2 Be6 18. b3 Nd7 19. exf5 gxf5 20. Nd5 Bxd5 21. cxd5 e4 22. dxc6 exf3 23.
Qxf3 bxc6 24. Qxc6 Nb6 25. a4 Rac8 26. Qb5 Nf6 {Jurek,J (2332)-Jezbera,J (2165)
/Pardubice 2011/CBM 143 Extra/1/2-1/2 (41)}) ({RR} 12. Rad1 a6 13. Rd2 b6 14.
Rfd1 Rb8 15. b4 exd4 16. Bxd4 Ne5 17. Nxe5 dxe5 18. Be3 Bf8 19. a3 Ng7 20. Na4
Ne6 21. c5 bxc5 22. Nxc5 Nxc5 23. Bxc5 a5 24. bxa5 Qxa5 25. Bxf8 Rxf8 26. Qxc6
Be6 {Vasquez,R (2519)-Sepulveda Herrera,J (2337)/Santiago de Chile 2006/CBM
115 ext/1/2-1/2 (52)}) 12... Nf8 13. dxe5 dxe5 14. Bc5 f5 15. Bd6 Qf7 16. c5 h6
17. Re1 Nd7 18. Na4 fxe4 19. Rxe4 Nhf6 20. Nxe5 Nxe5 21. Rxe5 Bf5 22. Qb3 Be6
23. Qa3 Nd5 24. Re2 b5 25. cxb6 axb6 26. Qb3 Rad8 27. Ba3 Ne3 28. Qxe3 Bc4 29.
Qxb6 Bxe2 30. Bxc6 Bd4 31. Qb3 Re6 32. Bg2 Bxf2+ 33. Kh2 Rd3 34. Qb8+ Re8 35.
Qb7 Bxg3+ 36. Kh1 Rd7 37. Qb3 Qxb3 38. axb3 Rd1+ 39. Rxd1 Bxd1 40. Bd5+ Kh7 41.
Nc3 Bc2 42. Kg2 Be5 43. Bc5 Rd8 44. Bc4 Rd2+ 45. Kf3 Bf5 46. Ne2 Bxh3 47. Ke4
Bxb2 48. b4 Bf1 49. Ke3 Rd8 50. Kf2 Bxe2 51. Kxe2 Ba3 52. Bd3 Rb8 53. Bd6 Rc8
54. Ke3 h5 55. Kf4 Rd8 56. Ke5 Bxb4 57. Bxg6+ Kxg6 58. Bxb4 Rb8 59. Bd6 Rb6 60.
Be7 Rb7 61. Bd6 Rf7 62. Ke4 h4 63. Ke3 Kh5 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "3"]
[White "Garcia, Gildardo"]
[Black "Zapata, Alonso"]
[Result "1/2-1/2"]
[ECO "C19"]
[WhiteElo "2430"]
[BlackElo "2500"]
[PlyCount "55"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. a4 Nbc6 8. Nf3
Bd7 9. Bd3 Qa5 10. Qd2 O-O-O 11. Ba3 c4 12. Be2 f6 13. O-O Rdg8 $146 ({RR}
13... Rde8 14. Rfb1 Ng6 15. Rb5 Qa6 16. Bd6 Ncxe5 17. Rc5+ Nc6 18. Qd1 b6 19.
Rb5 Nd8 20. Rb4 Nb7 21. Bg3 Ne7 22. Nd2 Na5 23. Rab1 Nf5 24. Qc1 Nxg3 25. hxg3
h5 26. Nf1 Qb7 27. Ne3 Bc6 28. R1b2 {Chalhasuren,G-Bertholdt,D/Leningrad 1960/
EXT 2000/0-1 (57)}) ({RR} 13... Ng6 14. Bd6 Rdg8 15. Rfe1 Nd8 16. Bf1 Nf7 17.
Bb4 Qc7 18. Qe3 h5 19. g3 h4 20. g4 h3 21. a5 Nh4 22. Nxh4 Rxh4 23. Qg3 Rgh8
24. f3 R4h6 {1/2-1/2 (24) Zuckerman,B (2450)-Peters,J (2370)/Mentor 1977/MCL})
({RR} 13... Be8 14. Rfb1 Bh5 15. exf6 gxf6 16. Qe3 Bf7 17. Qf4 f5 18. Bxe7 Nxe7
19. Rb5 Qc7 20. Rc5 Nc6 21. Ne5 Be8 22. Qh6 Rd6 23. Bh5 Bxh5 24. Qxh5 b6 25.
Rxc6 Rxc6 26. Nxc6 Qxc6 27. a5 b5 28. a6 {Bakunin,D (1983)-Kamov,I (2176)/
Uljanovsk 2012/EXT 2013/1-0 (34)}) ({RR} 13... h5 14. Nh4 Rdg8 15. f4 Qd8 16.
exf6 gxf6 17. f5 Nxf5 18. Nxf5 exf5 19. Bd6 Be6 20. Bf4 Qd7 21. a5 h4 22. h3
Bf7 23. Bf3 Bh5 24. a6 b6 25. Bh2 Bxf3 26. Rxf3 Rh7 27. Raf1 Rg5 28. Qf4 {
Garcia,G (2430)-Agudelo,A (2305)/Columbia 1988/TD/1-0 (62)}) ({RR} 13... Nf5
14. Rfe1 Be8 15. g4 Nfe7 16. Bf1 Bd7 17. Bh3 h6 18. Bd6 Rdf8 19. Rab1 Rf7 20.
exf6 gxf6 21. Bg3 Ng6 22. Rb5 Qa6 23. Reb1 b6 24. Qc1 Qxa4 25. R5b2 Qa3 26. Qe3
Kb7 27. Nh4 Nxh4 28. Bxh4 {Fischer,R-Weinstein,R/New York 1960/MCD/1-0 (33)})
14. Rfe1 h5 15. Bf1 h4 16. Rab1 Nf5 17. g4 hxg3 18. fxg3 fxe5 19. Nxe5 Nfxd4
20. Bg2 Nxe5 21. Rxe5 Nc6 22. Bxd5 exd5 23. Rxd5 Ne5 24. Qg2 Qxc3 25. Rd3 cxd3
26. Qxb7+ Kd8 27. Qb8+ Bc8 28. Qd6+ 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "3"]
[White "Gonzales, S."]
[Black "Juan, G Arboleda"]
[Result "1-0"]
[ECO "E09"]
[WhiteElo "2305"]
[BlackElo "2325"]
[PlyCount "51"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. g3 Nf6 2. Bg2 d5 3. Nf3 c6 4. c4 e6 5. O-O Be7 6. d4 O-O 7. Qc2 b6 8. Nc3
Bb7 9. b3 Nbd7 10. Bb2 Rc8 11. Rad1 Qc7 12. Rfe1 ({RR} 12. e3 Ba8 13. Qd3 Rfd8
14. Rc1 dxc4 15. Qxc4 c5 16. Nb5 Qb8 17. Ne5 Bxg2 18. Kxg2 Nxe5 19. dxe5 Nd7
20. Qe4 a6 21. Na3 b5 22. Rc2 Qa8 23. Qxa8 Rxa8 24. Nb1 Nb6 25. Nd2 Nd5 26. a3
Nb6 {Croes,O (1951)-Lebrun,P (1956)/Khanty Mansiysk 2010/CBM 139/0-1 (47)})
12... Rfd8 13. e4 dxe4 ({RR} 13... Qb8 14. Qe2 Bb4 15. Nd2 Nxe4 16. Ndxe4 dxe4
17. Qxe4 Nf6 18. Qf3 Rd7 19. a3 Be7 20. Qe3 Rcd8 21. Bh3 Bf8 22. Ne2 Qd6 23.
Nf4 Re7 24. Qe5 Ree8 25. Bg2 Qd7 26. Qe2 Qc7 27. Nd3 Nd7 28. Qf3 {Kengis,E
(2575)-Krivonosov,O (2360)/Groningen 1991/CBM 026 ext/1-0 (54)}) 14. Nxe4 $146
({RR} 14. Ng5 e5 15. dxe5 Nxe5 16. Ncxe4 Nxe4 17. Bxe4 Ng6 18. h4 Bxg5 19. hxg5
Rxd1 20. Rxd1 Rf8 21. Qc3 f6 22. gxf6 Rxf6 23. Qd3 Rf7 24. Qd8+ Nf8 25. f4 Qxd8
26. Rxd8 c5 27. Bxb7 Rxb7 28. Kf2 Rd7 {Kovalev,D (2433)-Bogdanovich,S (2217)/
Odessa 2007/CBM 120 ext/1/2-1/2 (31)}) 14... Nxe4 15. Qxe4 c5 16. d5 Bf6 17.
Bc1 Qb8 18. Qg4 exd5 19. cxd5 Qa8 20. Ng5 Nf8 21. Ne4 Bd4 22. Rxd4 cxd4 23.
Nf6+ Kh8 24. Bh6 Ng6 25. Qxd4 Rg8 26. Nh5 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "3"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Baquero, Luis A"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2375"]
[BlackElo "2290"]
[PlyCount "82"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O Nc6 5. c4 dxc4 6. Na3 ({RR} 6. Qa4 Nd7 7.
Qxc4 e5 8. a3 Be7 9. Nc3 Nb6 10. Qe4 f5 11. Qc2 Be6 12. d3 O-O 13. Rb1 Rc8 14.
e3 Qd7 15. Rd1 Rfd8 16. b3 g5 17. Bb2 Bf6 18. Ne2 Qf7 19. Ba1 Qh5 20. Qd2 e4 {
Lolici,I (1967)-Lefevre,M (2043)/Athens 2012/CBM 149 Extra/0-1 (46)}) 6... e6
$146 ({RR} 6... Qd5 7. Qa4 Bd7 8. Qxc4 g6 9. Qf4 Qh5 10. Nb5 Bh6 11. Qc4 O-O
12. d4 a6 13. Bxh6 Qxh6 14. Nc7 Rac8 15. Nd5 cxd4 16. Nxf6+ exf6 17. Nxd4 Qd2
18. e3 Rfd8 19. Qe2 Qxe2 20. Nxe2 Bg4 21. Nc3 {Anikaev,Y (2460)-Zaitsev,I
(2445)/Minsk 1983/MCD/1/2-1/2 (43)}) ({RR} 6... e5 7. Nxc4 Bd6 8. d3 O-O 9. Bg5
h6 10. Nxd6 Qxd6 11. Bxf6 Qxf6 12. Nd2 Bd7 13. Ne4 Qe7 14. Rc1 b6 15. Qd2 Rac8
16. f4 exf4 17. Rxf4 f5 18. Nc3 Rce8 19. Re1 Ne5 20. d4 Ng6 21. Rf2 {Oll,L
(2600)-Magem Badals,J (2490)/Pamplona 1991/CBM 028/1-0 (39)}) ({RR} 6... e5 7.
Nxc4 Bd6 8. d3 O-O 9. a3 Re8 10. Nxd6 {1/2-1/2 (10) Gulko,B (2470)-Smagin,S
(2355)/Barnaul 1984/MCD}) 7. Nxc4 Be7 8. d3 O-O 9. a4 Nd5 10. Bd2 b6 11. Qb3
Ba6 12. Rfd1 Nd4 13. Nxd4 cxd4 14. Rdc1 Rc8 15. Rc2 Rc5 16. Rac1 Qb8 17. Qa2
Rcc8 18. Bxd5 exd5 19. Bf4 Qa8 20. Ne5 Bb7 21. Nf3 Rxc2 22. Rxc2 Rc8 23. Qb3 f6
24. Nxd4 Rxc2 25. Qxc2 Kf7 26. Qc7 Qc8 27. b3 Qxc7 28. Bxc7 Bc5 29. Nc2 Bc6 30.
d4 Be7 31. Bb8 a6 32. Bc7 b5 33. a5 Ke6 34. Bb6 g6 35. f3 g5 36. Kf2 Bd6 37.
Bd8 Be8 38. e4 Bg6 39. Ke3 g4 40. exd5+ Kd7 41. Bxf6 Bxc2 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "3"]
[White "Velez, G."]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "0-1"]
[ECO "D36"]
[BlackElo "2330"]
[PlyCount "118"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Bd3 Nbd7 8.
Nf3 Re8 9. O-O c6 10. Qc2 Nf8 11. a3 Ne4 12. Bf4 Nxc3 13. Qxc3 ({RR} 13. bxc3
c5 14. c4 Bf6 15. cxd5 cxd4 16. exd4 Qxd5 17. Bc4 Qf5 18. Qd2 Be6 19. Bd3 Qd5
20. Rab1 a6 21. Rfe1 Bd7 22. Ne5 Bxe5 23. Bxe5 Bc6 24. Be4 Qd7 25. Bxc6 bxc6
26. h3 Rad8 27. Qa5 Ne6 {Knaak,R (2530)-Inkiov,V (2480)/Varna 1985/MCD/0-1 (44)
}) 13... Bd6 $146 ({RR} 13... Ng6 14. Bg3 Bd6 15. b4 Bxg3 16. hxg3 a6 17. a4
Bd7 18. b5 axb5 19. axb5 Qb6 20. Rab1 cxb5 21. Qb3 Qd6 22. Bxb5 Bc6 23. Rfc1
Rec8 24. Rc5 Rc7 25. Be2 Nf8 26. Ne5 Nd7 27. Nxd7 Rxd7 28. Rbc1 {Dragomarezkij,
E (2465)-Sibriaev,A (2335)/Warsaw 1993/TD/1-0 (59)}) ({RR} 13... h5 14. h3 g5
15. Be5 g4 16. hxg4 hxg4 17. Nd2 f6 18. Bg3 Bd6 19. e4 Ne6 20. Rae1 Kg7 21.
exd5 cxd5 22. Nb3 Rh8 23. Nc5 Ng5 24. Bb1 b6 25. Qd3 Rh6 26. Na4 Qh8 27. f4 Ne4
28. Rxe4 {Plachkinova,T (2137)-Thorfinnsson,B (2415)/Otranto 2011/CBM 142
Extra/0-1 (58)}) 14. Be5 Ng6 15. Bxg6 hxg6 16. Bxd6 Qxd6 17. b4 Bf5 18. Ra2 Re4
19. a4 a6 20. Rb2 Rg4 21. h3 Re4 22. g4 Bd7 23. Ne5 Re8 24. f3 R4xe5 25. dxe5
Rxe5 26. Kg2 Qe7 27. Re1 g5 28. Qd4 f6 29. Rbe2 c5 30. bxc5 Bc6 31. Rb2 Qe8 32.
Rb6 Qe7 33. Kf2 Qe8 34. Rh1 Qg6 35. Qc3 Qh7 36. Rb4 Qh4+ 37. Kg2 Qh7 38. Rb2
Qg6 39. h4 gxh4 40. Qd4 Qg5 41. Kf2 Re7 42. Rb4 Kf7 43. Qd3 Kg8 44. Rf4 g6 45.
Rh3 Kf7 46. Rd4 Kg7 47. Rf4 Re8 48. Qc3 Qe5 49. Rd4 g5 50. Qd2 Qe6 51. Qd3 Re7
52. Qc3 Qe5 53. Qd2 Qe6 54. Qc3 Qe5 55. Qd2 Re8 56. Qd3 Re7 57. Qd2 Rf7 58. f4
Qe6 59. Qe2 Bd7 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "4"]
[White "Baquero, Luis A"]
[Black "Gonzales, S."]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2290"]
[BlackElo "2305"]
[PlyCount "75"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 g6 5. cxb5 a6 6. Nc3 axb5 7. d6 Qa5 8. e3
exd6 9. Bxb5 Bg7 $146 ({RR} 9... Ba6 10. Qe2 Ne4 11. Bd2 Nxd2 12. Nxd2 Bg7 13.
Bxa6 Rxa6 14. O-O Bxc3 15. bxc3 Qxc3 16. Ne4 Qe5 17. Rab1 O-O 18. Rxb8 Rxb8 19.
Qxa6 Qxe4 20. Qxd6 Rb1 21. Qxd7 Rxf1+ 22. Kxf1 Qb1+ 23. Ke2 Qxa2+ 24. Qd2 {
Volke,K (2395)-Jahnel,G/Germany 1991/TD/1/2-1/2 (49)}) ({RR} 9... Ne4 10. Qd3
Nxc3 11. bxc3 Ba6 12. Rb1 Be7 13. O-O O-O 14. c4 Qxa2 15. e4 Bxb5 16. cxb5 Ra4
17. Bb2 Rb4 18. Bc3 Qc4 19. Qe3 Rxb1 20. Rxb1 Re8 21. Nd2 Qe6 22. Qd3 f5 23. f3
fxe4 24. fxe4 {Groszpeter,A (2555)-Hertneck,G (2520)/Leibnitz 1990/CBM 020/0-1
(42)}) ({RR} 9... Ba6 10. Qb3 Be7 11. Bd2 Qb6 12. O-O O-O 13. Rfd1 Bb7 14. Bc4
Qxb3 15. Bxb3 Na6 16. Na4 Nc7 17. Bc3 Bc6 18. Nb6 Ra6 19. Nc4 d5 20. Nce5 Nb5
21. Be1 Rfa8 22. a3 Rb8 23. Ba2 Nd6 24. Nd3 {Zierke,O (2313)-Boettcher,P (2138)
/Berlin 2007/CBM 118 ext/1/2-1/2}) ({RR} 9... Ne4 10. Bd2 Nxc3 11. Bxc3 Qxb5
12. Bxh8 Ba6 13. Qd2 Nc6 14. Bc3 Be7 15. h4 h6 16. a3 Qc4 17. Rd1 Qg4 18. Rg1
Qc4 19. Rc1 Qe4 20. Rd1 Qc4 21. Rc1 Qe4 {1/2-1/2 (21) Gruettemeier,U-Boehle,L/
Germany 1991/TD}) 10. O-O Qb6 11. e4 O-O 12. Bg5 Bb7 13. Nd2 Qc7 14. Nc4 Nxe4
15. Nxe4 Bxe4 16. Nxd6 Bc6 17. Be7 Bd4 18. Qb3 Be5 19. Bxf8 Bxd6 20. Bxd6 Qxd6
21. Rad1 Qf6 22. Rfe1 Na6 23. Bxc6 Qxc6 24. Re7 c4 25. Qe3 Nc5 26. Qf4 Rf8 27.
Qxc4 Qb6 28. b4 Na4 29. Qd4 Qxd4 30. Rxd4 Rc8 31. g3 Nb6 32. Rd6 Rb8 33. Re4
Rb7 34. b5 Kf8 35. a4 f5 36. Rb4 Ke7 37. Rxb6 Rxb6 38. a5 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "4"]
[White "Cuartas, Carlos Enrique"]
[Black "Velez, G."]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2360"]
[PlyCount "83"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O Nge7 7. c3 d6 8. d4
cxd4 9. cxd4 Qb6 10. Nc3 ({RR} 10. d5 exd5 11. exd5 Ne5 12. Nxe5 Bxe5 13. Na3
Qb4 14. Bd2 Qd4 15. Qe2 O-O 16. Bc3 Qg4 17. Qxg4 Bxg4 18. Bxe5 dxe5 19. Rfe1
Nc8 20. h3 Bd7 21. Rxe5 Nd6 22. Rc1 Rfc8 23. Ree1 Kf8 24. Kf1 g5 {Cabrilo,G
(2466)-Kovacevic,A (2478)/Vrnjacka Banja 1999/EXT 2000/1/2-1/2 (38)}) ({RR} 10.
d5 exd5 11. exd5 Ne5 12. Nxe5 Bxe5 13. Nd2 Qc7 14. Qe2 O-O 15. Nc4 Bg7 16. Bf4
Nf5 17. Rac1 Qd8 18. Qd2 Re8 19. Rfe1 Rxe1+ 20. Rxe1 b5 21. Na5 Bd7 22. g4 Nh4
23. Nc6 Qb6 24. Ne7+ Kh8 {Kratochvil,K (2113)-Snorek,M (2155)/Brno 2009/CBM
131 Extra/1-0}) 10... O-O 11. d5 Ne5 $146 ({RR} 11... exd5 12. exd5 Ne5 13.
Nxe5 Bxe5 14. Bg5 Nf5 15. Qd2 f6 16. Bf4 Bxf4 17. Qxf4 Qxb2 18. Rfc1 g5 19. Qe4
Qb6 20. Rab1 Qd8 21. Re1 b6 22. Bh3 Ng7 23. Be6+ Kh8 24. Nb5 f5 25. Qb4 Qf6 26.
Qxd6 {Nielsen,S (2195)-Ziegler,A (2305)/Copenhagen 1995/CBM 047 ext/1/2-1/2
(62)}) ({RR} 11... exd5 12. exd5 Nb4 13. a3 Qa5 14. Nd2 Na6 15. Nc4 Qc7 {1/2-1/
2 (15) Hoehn,J (2235)-Lisanti,A (2245)/Germany 1992/GER-chT2}) 12. Nxe5 Bxe5
13. Na4 Qd8 14. Bh6 Re8 15. dxe6 Bxe6 16. f4 Bf6 17. Kh1 Rb8 18. Nc3 b5 19. Qd2
b4 20. Ne2 d5 21. f5 gxf5 22. Bg5 Bxg5 23. Qxg5+ Ng6 24. Qxd8 Rbxd8 25. exf5
Bxf5 26. Rxf5 Rxe2 27. Bxd5 Ne5 28. Rd1 Kg7 29. Kg1 f6 30. Rf2 Rxf2 31. Kxf2
Nc4 32. Rc1 Rxd5 33. Rxc4 Rd2+ 34. Kf3 Rxb2 35. Rc7+ Kg6 36. Rxa7 Rxh2 37. a4
Ra2 38. a5 b3 39. Rb7 b2 40. a6 h5 41. a7 Rxa7 42. Rxb2 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "4"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Garcia, Gildardo"]
[Result "0-1"]
[ECO "D59"]
[WhiteElo "2330"]
[BlackElo "2430"]
[PlyCount "74"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 h6 6. Bh4 O-O 7. e3 b6 8. cxd5
Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Rc1 Bb7 12. Qa4 c5 ({RR} 12... Rc8 13. Be2
c5 14. O-O Nc6 15. dxc5 bxc5 16. Qf4 Rab8 17. Rfd1 d4 18. Bd3 Nb4 19. Bc4 Bxf3
20. Qxf3 Nc6 21. b3 Rc7 22. Bd5 Nb4 23. exd4 cxd4 24. Rxc7 Qxc7 25. Rxd4 Nxd5
26. Rxd5 Qc2 27. g3 {Ivanov,S (2574)-Najer,E (2624)/Moscow 2005/CBM 106/1/2-1/2
}) 13. Qa3 Rc8 ({RR} 13... Nd7 14. Bb5 Rfc8 15. O-O Nf6 16. Ne5 Rc7 17. b3 a6
18. Bd3 Ne4 19. Rc2 Ng5 20. f4 Ne4 21. Bxe4 dxe4 22. dxc5 bxc5 23. Rfc1 Rd8 24.
Qa5 Rd5 25. Nc4 Rcd7 26. h3 Rd1+ 27. Kh2 Rxc1 28. Rxc1 {Mu Ke (2294)-Visakh,N
(2046)/New Delhi 2012/CBM 146 Extra/1-0 (65)}) 14. Be2 Kf8 15. dxc5 $146 bxc5
16. O-O Nd7 17. Ba6 Rab8 18. Bxb7 Rxb7 19. Rfd1 Nf6 20. Nd4 Ne4 21. f3 Nf6 22.
Nf5 Qe6 23. Rxc5 Rxc5 24. Qxc5+ Kg8 25. Qc2 g6 26. Nxh6+ Kg7 27. Ng4 Nxg4 28.
fxg4 Qxe3+ 29. Kh1 d4 30. h3 Rd7 31. Qc6 Qe2 32. Qc1 d3 33. Qc3+ Kh7 34. Rd2
Qf1+ 35. Kh2 Qf4+ 36. Kg1 Qg3 37. Rf2 Qxf2+ 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "4"]
[White "Henao, Raul Fernando"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1-0"]
[ECO "B93"]
[WhiteElo "2345"]
[BlackElo "2375"]
[PlyCount "69"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. Be2 Bg7 6. O-O Nf6 7. Nc3 O-O 8.
Kh1 a6 9. f4 Nbd7 10. Bf3 ({RR} 10. a4 Qc7 11. a5 b5 12. axb6 Nxb6 13. Nb3 Bb7
14. Bd3 Nfd7 15. Qe2 Rfc8 16. Ra2 Nc4 17. Nd5 Bxd5 18. exd5 Nf6 19. Qf3 Nb6 20.
Rxa6 Rxa6 21. Bxa6 Rb8 22. Bd3 Nbxd5 23. Bd2 Nb4 24. Bxb4 Rxb4 {Lutz,C (2610)
-Svidler,P (2713)/Frankfurt 1999/CBM 072/0-1 (36)}) 10... e5 ({RR} 10... Qc7
11. g4 e5 12. Nde2 exf4 13. g5 Ne8 14. Nxf4 Ne5 15. Bg2 Qd8 16. Nfd5 Be6 17.
Qe1 Rc8 18. Qh4 Bxd5 19. exd5 Rc4 20. Qg3 f5 21. gxf6 Nxf6 22. Bg5 Nf7 23. Bd2
Nh5 24. Qf2 Ne5 25. Qe3 {Mestre Bellido,H (2321)-Barrientos Chavarriaga,S
(2500)/Badalona 2012/CBM 149 Extra/0-1 (34)}) 11. Nb3 Qc7 12. f5 $146 ({RR} 12.
a4 Nb6 13. a5 Nc4 14. Be2 exf4 15. Rxf4 Be6 16. Rh4 h5 17. Nd4 Ne5 18. Rf4 Qe7
19. h3 Rac8 20. Ra3 Nfd7 21. Bxh5 Nc4 22. Rb3 Nxa5 23. Nxe6 {1/2-1/2 (23)
Malofeev,A (2277)-Kryschilovskij,A (2339)/St Petersburg 2007/CBM 117 ext})
12... b5 13. a3 Bb7 14. Qe1 gxf5 15. exf5 d5 16. Qg3 Kh8 17. Rd1 Rac8 18. Bxd5
Nxd5 19. Nxd5 Qxc2 20. Bg5 Bxd5 21. Rxd5 Qxf5 22. Nd4 Qe4 23. Rxd7 exd4 24. Re1
Qf5 25. Rd6 Rfe8 26. h4 Re6 27. Rexe6 fxe6 28. Rxa6 Be5 29. Qe1 d3 30. Be3 Qg4
31. Bd2 Bg3 32. Bc3+ Kg8 33. Qxe6+ Qxe6 34. Rxe6 Rxc3 35. bxc3 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "4"]
[White "Juan, G Arboleda"]
[Black "Agudelo, Antonio"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "2325"]
[BlackElo "2305"]
[PlyCount "28"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 d6 3. Nf3 g6 4. d4 Nd7 5. e4 Bg7 6. Be2 Ne7 7. O-O O-O 8. Be3
c5 ({RR} 8... Nc6 9. Rc1 f5 10. Bg5 Bf6 11. Bxf6 Nxf6 12. dxe5 dxe5 13. exf5
gxf5 14. Nd5 Kh8 15. Qd2 Qd7 16. Rfd1 Qg7 17. Qg5 Ne8 18. Qxg7+ Kxg7 19. b4 e4
20. Ng5 h6 21. Nh3 Be6 22. Nhf4 Bf7 23. b5 {Shankland,S (2599)-Wen,Y (2593)/
Ningbo 2013/CBM 155 Extra/1/2-1/2 (52)}) 9. dxe5 dxe5 10. Qd2 $146 ({RR} 10.
Qd6 Qb6 11. Qd2 Nc6 12. Na4 Qb4 13. Nxc5 Qxd2 14. Nxd2 Nd4 15. Bxd4 exd4 16.
Nd3 a5 17. f4 b6 18. e5 Ba6 19. b3 Rac8 20. Ne4 Rc7 21. Rad1 Rd8 22. Nd6 Nc5
23. Bf3 Bf8 24. Bd5 Bxd6 {Uhlmann,W (2440)-Katalymov,B (2378)/Naumburg 2002/
EXT 2006/1/2-1/2 (60)}) 10... Nc6 11. Bh6 Nd4 12. Bxg7 Kxg7 13. Nxd4 cxd4 14.
Nd5 Nc5 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "4"]
[White "Mejia, Roberto"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "A26"]
[BlackElo "2325"]
[PlyCount "93"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. Nc3 Nc6 7. d3 e5 8. Rb1
a5 9. a3 Re8 10. b3 ({RR} 10. Bg5) ({RR} 10. Qc2 Bg4 11. Be3 Qd7 12. Qd2 Bh3
13. Bh6 Bxg2 14. Bxg7 Kxg7 15. Kxg2 e4 16. Ne1 Ne5 17. b3 Qc6 18. Kg1 Neg4 19.
dxe4 Nxe4 20. Qd4+ Ngf6 21. Nd5 Re5 22. Nd3 Rae8 23. Nxf6 Nxf6 24. Nxe5 Rxe5 {
Villiers,T (1966)-Paterson,A (2201)/Ascot 2013/CBM 155 Extra/0-1 (43)}) 10...
h6 11. Bb2 $146 ({RR} 11. Nd2 Be6 12. Bb2 d5 13. cxd5 Nxd5 14. Nxd5 Bxd5 15. e4
Be6 16. Nf3 Qd7 17. Qc2 Rad8 18. Rfd1 f5 19. Nh4 Qf7 20. Bc3 f4 21. h3 Bf6 22.
Nf3 g5 23. g4 h5 24. Nh2 hxg4 25. hxg4 Qd7 {McCarthy,K (2106)-Naylor,J (2189)/
England 2010/EXT 2011/0-1 (62)}) 11... Be6 12. h3 d5 13. e3 e4 14. Nd4 Nxd4 15.
exd4 exd3 16. cxd5 Nxd5 17. Nxd5 Bxd5 18. Bxd5 Qxd5 19. Qxd3 Rad8 20. Qc2 c6
21. Rbd1 Re4 22. Rd3 c5 23. Rfd1 Rde8 24. Qb1 cxd4 25. Qa1 Qf5 26. Bxd4 Re2 27.
R3d2 Qf3 28. Rxe2 Rxe2 29. Rf1 Bxd4 30. Qxd4 Qxb3 31. Qd8+ Kh7 32. Qxa5 Ra2 33.
Qe5 Rxa3 34. Rc1 Ra8 35. Qe4 Rd8 36. Kg2 Rd7 37. Rb1 Qe6 38. Qxe6 fxe6 39. Rb6
Re7 40. Kf3 Kg7 41. Ke4 Kf6 42. f4 Rc7 43. g4 Rc3 44. h4 g5 45. hxg5+ hxg5 46.
fxg5+ Kxg5 47. Rxb7 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "4"]
[White "Zapata, Alonso"]
[Black "Betancourt, David"]
[Result "1-0"]
[ECO "B66"]
[WhiteElo "2500"]
[BlackElo "2230"]
[PlyCount "101"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8.
O-O-O h6 9. Be3 Bd7 10. f3 b5 11. Kb1 Be7 ({RR} 11... Qc7 12. Bxb5 axb5 13.
Ndxb5 Qb8 14. Nxd6+ Bxd6 15. Qxd6 Qxd6 16. Rxd6 Na5 17. b3 Rc8 18. Ne2 e5 19.
Rhd1 Bc6 20. c4 O-O 21. Nc3 Rb8 22. Kc2 Rfc8 23. Ba7 Ra8 24. Bb6 Nb7 25. R6d2
Be8 26. Kb2 {Iordachescu,V (2609)-Baklan,V (2584)/Baile Tusnad 2005/CBM 106
ext/1/2-1/2 (51)}) 12. g4 b4 $146 ({RR} 12... Ne5 13. Bd3 b4 14. Nce2 d5 15.
exd5 Nxd5 16. Nf4 Nxe3 17. Qxe3 Qc7 18. Rhe1 Nxd3 19. Nxd3 O-O 20. Ne5 Rfd8 21.
f4 Bc5 22. g5 hxg5 23. fxg5 Be8 24. Nef3 Rd5 25. Qe4 Rad8 26. Rd3 Bxd4 27. Nxd4
{Mulet,P (2241)-Dobrowolski,P (2417)/Gora Swietej Anny 2013/CBM 152 Extra/0-1
(40)}) ({RR} 12... Ne5 13. Qg2 Rc8 14. Nce2 Qc7 15. h4 Nc4 16. Bc1 e5 17. Nb3
Na3+ 18. bxa3 Qxc2+ 19. Ka1 Qxd1 20. g5 Nh5 21. gxh6 gxh6 22. Qg1 Nf4 23. Qa7
f5 {0-1 (23) Rudd,J (2236)-Bates,R (2382)/Canterbury 2010/CBM 137 Extra}) 13.
Nce2 d5 14. Nxc6 Bxc6 15. Nd4 Bb7 16. e5 Nd7 17. f4 Qc8 18. h4 a5 19. Bd3 Ba6
20. g5 hxg5 21. hxg5 Rxh1 22. Rxh1 Bxd3 23. Qxd3 Qc4 24. Rh8+ Bf8 25. g6 Qxd3
26. cxd3 Ra6 27. Nb3 Rc6 28. Nxa5 Rc7 29. Bd2 fxg6 30. Bxb4 Kf7 31. Bd6 Bxd6
32. exd6 Rc5 33. Nb7 Rb5 34. Nd8+ Kf6 35. Re8 Rb8 36. a4 Kf5 37. a5 Ra8 38. b4
Rb8 39. Kc2 g5 40. fxg5 e5 41. a6 g6 42. b5 Rc8+ 43. Kd1 e4 44. dxe4+ dxe4 45.
Kd2 Nb6 46. Rf8+ Kg4 47. Ne6 Nc4+ 48. Kd1 Nb2+ 49. Kd2 Nc4+ 50. Ke2 Nxd6 51. a7
1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Zapata, Alonso"]
[Result "1/2-1/2"]
[ECO "C15"]
[WhiteElo "2325"]
[BlackElo "2500"]
[PlyCount "46"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd2 dxe4 5. Qg4 Qxd4 6. O-O-O f5 7. Qh5+ ({RR}
7. Qg3 Bd6 8. Bf4 Bxf4+ 9. Qxf4 Qc5 10. f3 Ne7 11. fxe4 O-O 12. Nf3 Nd7 13.
exf5 Nxf5 14. Re1 Nf6 15. Bd3 Bd7 16. Ne5 Nd4 17. Ne4 Qd5 18. c4 Nxe4 19. Qxe4
Qxe4 20. Rxe4 Nc6 21. Nxd7 Rfd8 {Chudinovskih,A (2325)-Leuba,D (2280)/San
Bernardino 1992/TD/1-0 (36)}) ({RR} 7. Qg3 Bd6 8. Bf4 Bxf4+ 9. Qxf4 Qc5 10. f3
exf3 11. Nxf3 Ne7 12. Bc4 Ng6 13. Qd2 O-O 14. Bb3 Nc6 15. Ng5 Re8 16. Qe2 Qe5
17. Qh5 Qf4+ 18. Rd2 Qh4 19. Qxh4 Nxh4 20. Re1 Nxg2 21. Rxg2 Nd4 {Mrovec,J
(2022)-Gogela,J (1942)/Nachod 2011/EXT 2012/1-0}) 7... g6 8. Qh3 Qg7 9. Bc4
$146 ({RR} 9. Nxe4 Bxd2+ 10. Nxd2 Nc6 11. Qb3 Nge7 12. f4 Bd7 13. Ngf3 O-O-O
14. Bc4 Na5 15. Qa3 Nxc4 16. Nxc4 Kb8 17. Nce5 Nc6 18. Qb3 Ka8 19. Rd2 Nxe5 20.
Nxe5 Bc8 21. Rhd1 Qe7 22. Rd3 a6 23. a3 g5 {Efremova,Y (2196)-Hryhorenko,N
(2296)/Alushta 2004/CBM 100 ext/0-1 (35)}) 9... Nc6 10. Nge2 Bd7 11. Nf4 Qe5
12. Qg3 Nge7 13. a3 Bd6 14. Nb5 Qc5 15. Nxd6+ cxd6 16. Bxe6 O-O-O 17. Bc3 Rhe8
18. Bf6 Ne5 19. Kb1 Kb8 20. Bxd7 Rxd7 21. Ne6 Qc6 22. Bxe5 dxe5 23. Qxe5+ Kc8
1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "5"]
[White "Agudelo, Antonio"]
[Black "Baquero, Luis A"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "2305"]
[BlackElo "2290"]
[PlyCount "185"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O Nf6 5. d3 Bg4 6. h3 Bh5 7. Nbd2 e6 8. Re1
({RR} 8. g4 Bg6 9. Nh4 Bd6 10. e3 Nd7 11. Nxg6 hxg6 12. c3 Nde5 13. d4 Nd3 14.
dxc5 Nxc5 15. c4 Bc7 16. cxd5 exd5 17. Nb1 Qd6 18. f4 d4 19. Na3 a6 20. b4 Ne6
21. b5 Nb4 22. b6 Qxb6 {Planinec,A (2525)-Pomar Salamanca,A (2435)/Madrid 1973/
MCL/0-1 (67)}) 8... Be7 9. g4 $146 ({RR} 9. e4 O-O 10. g4 dxe4 11. dxe4 Bg6 12.
Nh4 Qc7 13. Nxg6 hxg6 14. c3 Rfd8 15. Qc2 Ne5 16. Re3 c4 17. b4 a5 18. Rb1 Nd3
19. Bf1 Nxc1 20. Rxc1 b5 21. a3 Bd6 22. Rd1 Bf4 23. Ree1 axb4 {Poznanska,K
(2102)-Korosciel,A (2109)/Polanica Zdroj 2005/CBM 108 ext/0-1 (46)}) ({RR} 9.
c3 O-O 10. Qc2 Qc7 11. e4 Rac8 12. exd5 Nxd5 13. a4 Rfd8 14. Nc4 h6 15. Nfe5
Nxe5 16. Nxe5 Bd6 17. Nc4 Bg6 18. Qe2 Nf6 19. Nxd6 Qxd6 20. Bxb7 Bxd3 21. Qf3
e5 22. Bxc8 Rxc8 23. b4 cxb4 {Weisser,S-Jacoby,G (2186)/Hamburg 2013/CBM 155
Extra/1-0 (36)}) ({RR} 9. e4 dxe4 10. dxe4 O-O 11. c3 h6 12. Qc2 Bg6 13. Nh4
Bh7 14. Bf3 Rc8 15. Ng2 b5 16. Be2 Qb6 17. f4 Rfd8 18. Kh2 c4 19. Rf1 Bc5 20.
a4 a6 21. axb5 axb5 22. f5 Ne5 23. Nf4 exf5 {Krejci,P (2185)-Strnad,J (2065)/
Czechia 2004/EXT 2007/1-0 (56)}) 9... Bg6 10. Nh4 Qc7 11. Nxg6 hxg6 12. c3
O-O-O 13. Qa4 g5 14. Nf3 Nh7 15. e4 f6 16. Be3 Nf8 17. exd5 exd5 18. b4 Nd7 19.
Rab1 Nb6 20. Qb3 c4 21. Bxb6 cxb3 22. Bxc7 bxa2 23. Ra1 Kxc7 24. Rxa2 Bd6 25.
d4 a6 26. Rae2 Rd7 27. Kf1 Bf4 28. Ng1 Bh2 29. Nf3 Bf4 30. Rd1 Rhd8 31. Ne1 Re7
32. Nd3 Rxe2 33. Kxe2 Bd6 34. Bxd5 Na7 35. Bc4 Rh8 36. Rh1 b5 37. Bd5 Kb6 38.
Kf3 a5 39. bxa5+ Kxa5 40. Be6 Kb6 41. d5 Nc8 42. Ke4 Ne7 43. Rb1 Rxh3 44. c4 b4
45. Nxb4 Kc5 46. Na6+ Kxc4 47. Rb6 f5+ 48. Bxf5 Bc5 49. Nxc5 Kxc5 50. Re6 Rh1
51. Ke5 Nxd5 52. Be4 Re1 53. f3 Nf4 54. Rc6+ Kb5 55. Rc2 Rg1 56. Kf5 Nh3 57.
Kg6 Rg3 58. Kxg7 Kb4 59. Kf6 Kb3 60. Rc1 Rg2 61. Kf5 Kb4 62. Rh1 Nf2 63. Rh5
Kc5 64. Rxg5 Kd4 65. Bb7 Nd3 66. Rg8 Rb2 67. Bc6 Rb6 68. Rd8+ Ke3 69. Re8+ Kf2
70. Be4 Rb5+ 71. Kf6 Nf4 72. Re5 Rb6+ 73. Kf7 Ra6 74. Rb5 Rd6 75. Rf5 Kg3 76.
Rf6 Rd7+ 77. Ke8 Rg7 78. Kf8 Rg5 79. Kf7 Rc5 80. Rf5 Rc7+ 81. Kf6 Rc8 82. Kg7
Ne6+ 83. Kh7 Kh4 84. Rh5+ Kg3 85. Re5 Re8 86. Rxe6 Rxe6 87. g5 Re7+ 88. Kh6 Kf4
89. g6 Re6 90. Kh7 Kg5 91. g7 Rh6+ 92. Kg8 Rf6 93. Kh8 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "5"]
[White "Betancourt, David"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "0-1"]
[ECO "E12"]
[WhiteElo "2230"]
[BlackElo "2330"]
[PlyCount "71"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8.
cxd4 Nc6 9. a3 Be7 10. Be2 O-O 11. O-O b6 12. Bb2 ({RR} 12. Bf4 Na5 13. Qd3 Bb7
14. Rac1 Bd6 15. Be3 h6 16. e5 Be7 17. Bd1 Qd5 18. Rc7 Bd8 19. Rxb7 Qxb7 20.
Bc2 g6 21. Bxh6 Rc8 22. h4 f5 23. exf6 Rxf6 24. Bg5 Rf5 25. Bxd8 Rxd8 26. Qe3
Rxf3 {Proyer,E (1886)-Kelecevic,N (2257)/Triesen 2013/CBM 154 Extra/1-0 (38)})
12... Bb7 13. Bd3 $146 ({RR} 13. Qd3 Rc8 14. Qe3 Bf6 15. Bc3 Ne7 16. Bb4 Qd7
17. Ne5 Bxe5 18. dxe5 f5 19. exf6 Rxf6 20. Rad1 Qe8 21. Bc3 Rf8 22. Rd6 Qf7 23.
Bg4 Rxc3 24. Qxc3 Qg6 25. Rxe6 {1-0 (25) Goldin,A (2535)-Haas,T/Baden-Baden
1990/GER}) 13... Bf6 14. e5 Be7 15. Qe2 Na5 16. Nd2 Rc8 17. f4 g6 18. Qg4 Kh8
19. Qh3 Rg8 20. Rad1 Qd7 21. Ne4 Nc4 22. Ba1 Bd5 23. Nf6 Bxf6 24. exf6 Qd8 25.
Qh4 Ne3 26. Rb1 Nxf1 27. Rxf1 Bc6 28. Re1 Qd5 29. Qf2 Qh5 30. Bb2 Bd5 31. h3 g5
32. f5 g4 33. Re3 gxh3 34. g3 Qd1+ 35. Bf1 Rc2 36. Re2 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "5"]
[White "Garcia, Gildardo"]
[Black "Cuartas, Carlos Enrique"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "2430"]
[BlackElo "2360"]
[PlyCount "105"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. c3 Bg4 5. Bb5 ({RR} 5. d5 Nb8 6. Be3 c6 7.
dxc6 Nxc6 8. Nbd2 g6 9. Qb3 Bc8 10. Bc4 e6 11. Rd1 Qc7 12. Bb5 Bg7 13. e5 dxe5
14. Bc5 Nd7 15. Ba3 Na5 16. Qc2 Bf8 17. Ne4 Nc6 18. Qa4 a6 19. Nd6+ Bxd6 {
Ghaem Maghami,E (2577)-Korotkjevich,S (2401)/Pardubice 2012/CBM 149 Extra/1-0})
5... a6 6. Bxc6+ $146 ({RR} 6. Ba4 b5 7. Bc2 e6 8. h3 Bh5 9. Nbd2 Be7 10. O-O
O-O 11. Re1 d5 12. e5 Nd7 13. Nf1 Ncb8 14. Ng3 Bg6 15. Bxg6 fxg6 16. Ne2 Rf7
17. a4 Nb6 18. Nf4 Qd7 19. a5 Nc8 20. h4 c5 {Harutjunyan,G (2449)-Ledakov,A
(2215)/Alushta 2011/CBM 142 Extra/1-0 (41)}) ({RR} 6. Ba4 b5 7. Bc2 e5 8. d5
Na5 9. Nbd2 c5 10. b3 g6 11. h3 Bd7 12. a4 Nh5 13. b4 Nb7 14. O-O Nf4 15. Kh2
cxb4 16. cxb4 Rc8 17. axb5 axb5 18. Nb3 Bg7 19. Be3 O-O 20. Qd2 g5 {Ivkov,B
(2530)-Knaak,R (2515)/Amsterdam 1974/MCL/1-0 (41)}) 6... bxc6 7. Nbd2 e6 8. O-O
Be7 9. Re1 O-O 10. e5 Nd7 11. Qa4 Bxf3 12. Nxf3 c5 13. dxc5 Nxc5 14. Qg4 dxe5
15. Bh6 Bf6 16. Rad1 Nd7 17. Ng5 Qe7 18. Ne4 Nc5 19. Nxf6+ Qxf6 20. Be3 Qe7 21.
Qb4 Rfb8 22. Qxc5 Qxc5 23. Bxc5 Rxb2 24. a4 Ra2 25. Ra1 Rc2 26. Rec1 Rxc1+ 27.
Rxc1 Rb8 28. Bb4 Rd8 29. Ba5 Rd7 30. Kf1 Kf8 31. Ke2 Ke7 32. Rd1 f5 33. Rxd7+
Kxd7 34. Kd3 Kd6 35. Kc4 g5 36. Bb4+ Kc6 37. Be7 g4 38. g3 Kd7 39. Bg5 Kd6 40.
Bd2 e4 41. Bh6 e5 42. Kb4 Kd5 43. Be3 c5+ 44. Bxc5 f4 45. c4+ Kc6 46. Ba7 h5
47. Kc3 Kb7 48. Bc5 Kc6 49. Ba7 Kb7 50. gxf4 exf4 51. Bd4 h4 52. Bf6 h3 53. Kd2
1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "5"]
[White "Gonzales, S."]
[Black "Henao, Raul Fernando"]
[Result "1/2-1/2"]
[ECO "C60"]
[WhiteElo "2305"]
[BlackElo "2345"]
[PlyCount "20"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. c3 d6 5. d4 Bd7 6. dxe5 dxe5 7. O-O Bg7 8. Bg5
Nge7 9. Qc1 ({RR} 9. Na3 h6 10. Be3 O-O 11. Qd2 Kh7 12. Bc5 Rh8 13. Rfd1 Bg4
14. Qe3 Qe8 15. Be2 Be6 16. Nb5 Qb8 17. Rd2 a6 18. Na3 Rd8 19. Bc4 Rxd2 20.
Qxd2 Bxc4 21. Nxc4 Qe8 22. Rd1 Rd8 23. Qe2 Rxd1+ {Xie Jun (2515)-Hort,V (2535)/
Monte Carlo 1994/CBM 042/1/2-1/2}) ({RR} 9. Qd2 a6 10. Ba4 h6 11. Be3 b6 12.
Rd1 Bg4 13. Qe2 Qc8 14. h3 Be6 15. c4 O-O 16. Nc3 f5 17. exf5 gxf5 18. Nd5 Rf7
19. Bxb6 cxb6 20. Nxb6 Qb7 21. Nxa8 Qxa8 22. Rd6 Qc8 23. Rad1 e4 {Sevillano,E
(2512)-Kretchetov,A (2358)/Agoura Hills 2009/EXT 2013/1-0 (34)}) ({RR} 9. Nbd2
O-O 10. Nb3 f6 11. Nc5 Bg4 12. Be3 b6 13. Qa4 Na5 14. Rad1 Qc8 15. Bd7 Bxd7 16.
Qxd7 Kf7 17. Qa4 Kg8 18. b4 Nac6 19. Qb3+ Kh8 20. Ne6 Re8 21. Qc4 a6 22. Rd2 b5
23. Qb3 a5 {Urday Caceres,H (2430)-Henao,R (2335)/Thessaloniki 1988/TD/1-0 (38)
}) 9... O-O 10. Rd1 $146 ({RR} 10. Na3 Qe8 11. Bh6 a6 12. Ba4 Nc8 13. Re1 Nb6
14. Bb3 Na5 15. Bd5 Bg4 16. Bxg7 Kxg7 17. Nd2 Rd8 18. b4 Nc6 19. Ndc4 Nxc4 20.
Nxc4 f6 21. Qe3 Bd7 22. a4 Rb8 23. Nb2 Nd8 24. a5 Be6 {Kurajica,B (2525)-Ree,H
(2420)/Amsterdam 1976/MCL/1/2-1/2 (56)}) 10... Qe8 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "5"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Mejia, Roberto"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2375"]
[PlyCount "81"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. e3 d6 6. Nge2 Nf6 7. O-O O-O 8. h3
Ne5 ({RR} 8... Bf5 9. d3 h5 10. Kh2 a6 11. e4 Bd7 12. Bg5 b5 13. Qd2 Rb8 14.
Rab1 Nh7 15. Be3 Nd4 16. b3 e6 17. Bh6 b4 18. Bxg7 bxc3 19. Qxc3 Nxe2 20. Qb2
Re8 21. Rfe1 e5 22. Bxe5 dxe5 23. Qxe2 {Gonzalez Rodriguez,J (2410)-Perez
Mitjans,O (2504)/Barcelona 2012/CBM 149 Extra/0-1 (45)}) ({RR} 8... Rb8 9. b3
Nb4 10. d4 Bf5 11. e4 cxd4 12. Nxd4 Bd7 13. Be3 b6 14. Qd2 Nc6 15. Nxc6 Bxc6
16. e5 Bxg2 17. exf6 Bxf1 18. fxg7 Bxh3 19. gxf8=Q+ Qxf8 20. Bh6 Qd8 21. Qd4 f6
22. Re1 {1-0 (22) Curic,D (2271)-Miskovic,B (2024)/Split 2013/CBM 153 Extra})
9. d3 Bf5 $146 ({RR} 9... Rb8 10. Rb1 Bf5 11. e4 Bd7 12. a3 Nc6 13. b4 b6 14.
b5 Nd4 15. Nxd4 cxd4 16. Ne2 e5 17. f4 Ne8 18. f5 f6 19. g4 g5 20. h4 gxh4 21.
Qe1 a6 22. a4 axb5 23. axb5 Ra8 24. Qxh4 {Lugo,S (2006)-Yakisich,M (2002)/
Buenos Aires 2009/CBM 129 Extra/1-0 (32)}) ({RR} 9... Rb8 10. b3 a6 11. d4 Ned7
12. a4 b6 13. Bb2 Bb7 14. d5 Bc8 15. Qd2 Ne8 16. Ra2 Nc7 17. Nd1 b5 18. Bxg7
Kxg7 19. axb5 axb5 20. Nb2 {1/2-1/2 (20) Lundeby,O (2178)-Nilsen,J (2206)/
Norway 2011/EXT 2013}) 10. e4 Bd7 11. f4 Nc6 12. Be3 Rb8 13. Kh2 a6 14. a4 Qc7
15. Qd2 Nd4 16. Nxd4 cxd4 17. Bxd4 Ng4+ 18. hxg4 Bxd4 19. g5 Kg7 20. Ne2 Qb6
21. Nxd4 Qxd4 22. Qc3 Qxc3 23. bxc3 Rfc8 24. Ra3 Rc5 25. a5 b5 26. axb6 Rxb6
27. Rfa1 Bc8 28. Kg1 h6 29. gxh6+ Kxh6 30. Bf1 Rb2 31. d4 Rh5 32. Bg2 e5 33.
fxe5 dxe5 34. d5 Rg5 35. R3a2 Rb3 36. Ra3 Rb2 37. R1a2 Rb1+ 38. Kf2 f5 39. c5
fxe4 40. Bxe4 Rh5 41. Bxb1 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "5"]
[White "Suarez, Luis A"]
[Black "Juan, G Arboleda"]
[Result "1/2-1/2"]
[ECO "A30"]
[BlackElo "2325"]
[PlyCount "98"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 c5 5. O-O e6 6. Nc3 Be7 7. d4 cxd4 8. Nxd4
Bxg2 9. Kxg2 Qc8 10. Qd3 Qb7+ ({RR} 10... O-O 11. b3 Rd8 12. e4 d6 13. Bb2 Nbd7
14. f4 Qb7 15. Qf3 Rac8 16. Rad1 a6 17. h3 g6 18. Rfe1 e5 19. Nc2 Re8 20. Ne3
b5 21. cxb5 axb5 22. Ncd5 Nxd5 23. Nxd5 Bd8 24. Re2 exf4 25. gxf4 {Dobre,C
(2292)-Petrisor,A (2392)/Baile Olanesti 2013/CBM 153 Extra/1-0 (39)}) 11. Qf3
Qxf3+ 12. Kxf3 O-O $146 ({RR} 12... a6) 13. e4 Rc8 14. b3 Ne8 15. Bb2 Nc6 16.
Nxc6 Rxc6 17. Rfd1 d6 18. Ne2 a6 19. a4 Rc7 20. Rd3 h6 21. Bd4 Rb7 22. Nc3 Rc8
23. Ke2 Nf6 24. Bxf6 Bxf6 25. Rad1 Rc5 26. f4 Rc6 27. Na2 Be7 28. Nb4 Rc8 29.
Na2 b5 30. cxb5 axb5 31. a5 b4 32. Rd4 Ra8 33. Rxb4 Rba7 34. Rb5 Rxa5 35. Rxa5
Rxa5 36. Nc3 Ra3 37. Rb1 g5 38. fxg5 hxg5 39. Kd3 Kg7 40. Kc4 Ra8 41. b4 Bf6
42. Rb3 Rc8+ 43. Kd3 Kf8 44. b5 Ke7 45. Na4 Kd8 46. Nb6 Rb8 47. Nc4 Kd7 48. Rb1
Bd8 49. Ke2 f6 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "6"]
[White "Baquero, Luis A"]
[Black "Suarez, Luis A"]
[Result "0-1"]
[ECO "D66"]
[WhiteElo "2290"]
[PlyCount "92"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Rc1 c6 8. Bd3
Re8 9. O-O dxc4 10. Bxc4 Nd5 11. Bxe7 Qxe7 12. Ne4 h6 ({RR} 12... N5f6 13. Ng3
c5 14. e4 Rd8 15. e5 Ne8 16. Re1 cxd4 17. Qxd4 b6 18. Nf5 Qf8 19. Qh4 f6 20.
Bxe6+ Kh8 21. Bd5 {1-0 (21) Gligoric,S (2535)-Ivanovic,B (2485)/Bugojno 1982/
MCD}) ({RR} 12... Nf8 13. Bd3 Ng6 14. Ng3 Bd7 15. a3 f6 16. Bxg6 hxg6 17. e4
Nf4 18. e5 f5 19. h4 Red8 20. Qd2 Nd5 21. Ne2 Be8 22. Nf4 Bf7 23. g3 Rac8 24.
Nxd5 Rxd5 25. Qf4 Rcd8 26. Qe3 Be8 27. Kg2 {Miladinovic,L (2074)-Zivkovic,V
(2058)/Valjevo 2011/CBM 144 Extra/0-1 (41)}) 13. Bb3 $146 ({RR} 13. Qd2 b6 14.
Ng3 Bb7 15. e4 N5f6 16. e5 Nd5 17. Ne4 Red8 18. Nd6 Nf8 19. Qe2 Rab8 20. Bxd5
cxd5 21. Rc3 Ng6 22. Rfc1 Rd7 23. b4 Qd8 24. b5 Ne7 25. Ne1 Nc8 26. Nxb7 Rdxb7
27. Nd3 Ne7 {Garcia Vicente,N (2235)-Zarzo Lopez,T (2285)/Cala Galdana 1994/
EXT 1998/1/2-1/2 (42)}) 13... N5f6 14. Ng3 e5 15. Nf5 Qf8 16. N3h4 Kh7 17. f4
e4 18. g4 g6 19. Ng3 Nb6 20. h3 Nfd5 21. Qe2 Qe7 22. Ng2 f5 23. Kh2 Bd7 24. Rf2
Rf8 25. Rg1 Rae8 26. gxf5 gxf5 27. Nf1 Rg8 28. Ne1 Rxg1 29. Kxg1 Qh4 30. Kh2
Nf6 31. Rg2 Ng4+ 32. Kg1 Qxh3 33. a4 Be6 34. Bxe6 Rxe6 35. Qd2 Nd5 36. Qa5
Ngxe3 37. Nxe3 Qxe3+ 38. Kh1 Rg6 39. Rxg6 Kxg6 40. Ng2 Qxd4 41. Qd8 Qd1+ 42.
Kh2 Qh5+ 43. Kg1 Nf6 44. Qd4 Qh3 45. Qc4 Qg3 46. Qe6 h5 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "6"]
[White "Cuartas, Carlos Enrique"]
[Black "Betancourt, David"]
[Result "1-0"]
[ECO "E65"]
[WhiteElo "2360"]
[BlackElo "2230"]
[PlyCount "85"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. c4 c5 4. Nc3 Bg7 5. g3 cxd4 6. Nxd4 O-O 7. Bg2 d6 8. O-O
Qc7 9. b3 Nc6 10. Bb2 Bd7 ({RR} 10... Nxd4 11. Qxd4 Be6 12. Qd2 a6 13. Rac1
Rfc8 14. Na4 Nd7 15. Bxg7 Kxg7 16. Rfd1 Rab8 17. h4 h5 18. Qg5 Qd8 19. c5 b5
20. cxb6 Rxc1 21. Rxc1 Nxb6 22. Nxb6 Rxb6 23. Qa5 Qb8 24. Qc3+ Kg8 25. Qc7 {
Mikaelyan,A (2215)-Gabuzyan,H (2533)/Jermuk 2013/CBM 155 Extra/1/2-1/2 (32)})
11. Nc2 Rac8 $146 ({RR} 11... a6 12. e4 Rad8 13. Ne3 e6 14. Qd2 Ne7 15. Rac1
Bc6 16. Rfd1 Rd7 17. Qc2 Rc8 18. Qe2 Qd8 19. h3 d5 20. cxd5 exd5 21. Ncxd5
Nfxd5 22. exd5 Bb5 23. Rxc8 Qxc8 24. Qd2 Bxb2 25. Qxb2 Rd6 26. Ng4 {Nadenau,
O-Seiter,G/Waldshut 1991/GER/1-0 (33)}) ({RR} 11... Rfc8 12. Ne3 Be6 13. Qd2 a6
14. Ncd5 Bxd5 15. cxd5 Na7 16. Rac1 Qd7 17. Nc4 Qb5 18. Rc2 Rc7 19. Rfc1 Rac8
20. Bd4 Ra8 21. Na3 Rxc2 22. Rxc2 Qd7 23. Nc4 Qd8 24. Na5 Qd7 25. Bb6 Qb5 26.
Bxa7 {Akesson,J (2234)-Moller,F (1479)/Copenhagen 2002/CBM 089 ext/1-0 (35)})
12. Ne3 Be6 13. Ned5 Bxd5 14. cxd5 Nb8 15. Bh3 Nbd7 16. Nb5 Qb6 17. a4 a6 18.
Bd4 Qd8 19. Na3 Rb8 20. Nc4 Ne8 21. a5 Bxd4 22. Qxd4 Nc7 23. e4 Nb5 24. Qe3 Re8
25. Rad1 Nf8 26. f4 Qc7 27. e5 Rbd8 28. Nb6 Qc3 29. Qxc3 Nxc3 30. Rd3 Nb5 31.
Rc1 e6 32. dxe6 Nxe6 33. exd6 Rxd6 34. Rxd6 Nxd6 35. Rd1 Rd8 36. b4 Kg7 37. Bg2
Nb5 38. Rxd8 Nxd8 39. Na4 Nd4 40. Nc5 Nc2 41. b5 Nd4 42. Nxb7 Nxb7 43. bxa6 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "6"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B93"]
[WhiteElo "2330"]
[BlackElo "2325"]
[PlyCount "19"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Qc7 8. Bd3
Be7 9. fxe5 $146 ({RR} 9. Qe2 b5 10. a4 b4 11. Nd5 Nxd5 12. exd5 Nd7 13. Bd2 a5
14. c4 bxc3 15. bxc3 Bf6 16. fxe5 Nxe5 17. Bb5+ Bd7 18. Nd4 O-O 19. O-O Rfe8
20. Rxf6 Ng4 21. Re6 fxe6 22. Bxd7 Qxd7 23. Qxg4 Re7 {Wiechen,U (2202)-Bressel,
T (1949)/Germany 2004/EXT 2006/1-0}) ({RR} 9. Qe2 Bg4 10. Be3 exf4 11. Bxf4
Nbd7 12. O-O-O h6 13. Kb1 Ne5 14. h3 Bxf3 15. gxf3 b5 16. Be3 b4 17. Na4 Qc6
18. b3 Nfd7 19. f4 Nxd3 20. Qxd3 Nf6 21. Bd4 Qxe4 22. Qg3 Rc8 23. Qxg7 Rg8 {
Labib,I (2408)-Al Zendani,Z (2384)/Doha 2011/CBM 145 Extra/1/2-1/2 (77)}) ({RR
} 9. Qe2 Nbd7 10. a4 b6 11. O-O Bb7 12. Kh1 O-O 13. fxe5 dxe5 14. Bg5 h6 15.
Bh4 Nc5 16. Bg3 Nfd7 17. Bc4 Rac8 18. Nd5 Bxd5 19. Bxd5 a5 20. c3 Rce8 21. Nd4
Nf6 22. Nf5 Bd8 23. h3 Ne6 {De Almeida,V (2157)-Oliveira,R (2104)/Joao Pessoa
2013/CBM 153 Extra/0-1 (34)}) 9... dxe5 10. O-O 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "6"]
[White "Henao, Raul Fernando"]
[Black "Agudelo, Antonio"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2345"]
[BlackElo "2305"]
[PlyCount "47"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bd3 c5
8. O-O cxd4 9. Nxd4 Be7 10. c3 O-O 11. Qe2 a6 ({RR} 11... Bd7 12. Bf4 Qb6 13.
Rad1 Rfd8 14. Bb1 Nd5 15. Bg3 Rac8 16. Rfe1 Bf6 17. h4 Ne7 18. h5 Ba4 19. b3
Be8 20. Qe4 g6 21. Bh4 Bxh4 22. Qxh4 Nf5 23. Bxf5 exf5 24. hxg6 hxg6 25. Rd3
Bd7 26. Re7 {Tiviakov,S (2697)-Yemelin,V (2582)/Wroclaw 2009/CBM 130 Extra/1-0
(34)}) 12. Bg5 Re8 $146 ({RR} 12... h6 13. Bh4 Bd7 14. Rad1 Qb6 15. Bc4 Rac8
16. Bb3 Rfd8 17. Nf5 Qc5 18. Rxd7 Rxd7 19. Bxe6 Rcd8 20. Bxd7 Rxd7 21. Bxf6
gxf6 22. Qg4+ Kf8 23. Re1 Rd5 24. Nxe7 Re5 25. Rxe5 Qxe5 26. Qc8+ Kxe7 27.
Qxb7+ {Caceres Recalde,F (2235)-Valente,H (1792)/Buenos Aires 2013/CBM 153
Extra/1-0 (32)}) ({RR} 12... Qd5 13. Bh4 Re8 14. Rfd1 Qh5 15. Nf3 b5 16. Bxf6
Bxf6 17. Be4 Rb8 18. Qe3 b4 19. Bc6 Rf8 20. Qa7 Rb5 21. Bxb5 Qxb5 22. cxb4 Qxb4
23. Rab1 Bb7 24. a3 Qb5 25. Qe3 Bd5 26. b4 h6 27. Rbc1 {Hallaeva,B (2119)
-Berend,E (2328)/Beijing 2008/CBM 126 Extra/0-1 (67)}) 13. Rfe1 Nd5 14. Qe4 g6
15. Bxe7 Rxe7 16. Qh4 Re8 17. Qg3 Qc7 18. Qxc7 Nxc7 19. f4 Rd8 20. a4 Bd7 21.
Be4 Rab8 22. a5 Kf8 23. Red1 Ke7 24. Kf2 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "6"]
[White "Juan, G Arboleda"]
[Black "Betancourt, David"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "2325"]
[BlackElo "2230"]
[PlyCount "70"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 g6 2. c4 Bg7 3. d4 Nf6 4. Nc3 d6 5. Bg5 O-O 6. e3 Bg4 7. Be2 Nbd7 8. Nd2
$146 ({RR} 8. h3 Bxf3 9. Bxf3 c6 10. O-O e5 11. b4 Re8 12. Qb3 Qc7 13. Rfd1 Nf8
14. dxe5 dxe5 15. Bxf6 Bxf6 16. Ne4 Be7 17. c5 Rad8 18. Be2 Kg7 19. Bc4 f5 20.
Nc3 e4 21. Ne2 Bf6 22. Rac1 Rxd1+ {Zaitseva,L (2210)-Chiburdanidze,M (2380)/
Tbilisi 1979/MCD/0-1 (45)}) ({RR} 8. h3 Bxf3 9. Bxf3 Rb8 10. O-O c5 11. d5 a6
12. a4 Ne8 13. Qc2 Nc7 14. Be2 Nf6 15. Rad1 Kh8 16. Bf4 Ng8 17. Kh1 f5 18. e4
fxe4 19. Qxe4 Qd7 20. Bd2 Qe8 21. Qd3 Qf7 22. Bc1 Nf6 {Gagunashvili,M (2570)
-Lomsadze,D (2345)/Tbilisi 2012/CBM 148 Extra/1-0 (46)}) ({RR} 8. O-O c6 9. a3
Re8 10. Qc2 e5 11. Rad1 Qc7 12. b4 exd4 13. Nxd4 Bxe2 14. Ndxe2 Ng4 15. Ne4
Nxh2 16. Kxh2 d5+ 17. Bf4 Be5 18. cxd5 cxd5 19. Qxc7 Bxc7 20. Bxc7 Rxe4 21.
Rxd5 Nf6 22. Rd8+ Rxd8 {Cosman,A (1891)-Rotaru,V/Iasi 2012/EXT 2013/1-0}) ({RR
} 8. h3 Bxf3 9. Bxf3 Rb8 10. Qc2 c6 11. h4 h6 12. Bxf6 Bxf6 13. g4 e5 14. dxe5
Nxe5 15. Be2 Bxh4 16. Rd1 Be7 17. Rxh6 Kg7 18. Rh1 Rh8 19. Qe4 Rxh1+ 20. Qxh1
Qh8 21. Qg2 a6 22. f4 Nd7 {Dahm,T-Braun,W/Fischbach 1993/EXT 2002/1-0 (66)})
8... Bxe2 9. Qxe2 c6 10. O-O e5 11. dxe5 dxe5 12. Nde4 h6 13. Rad1 Qc7 14. Bxf6
Nxf6 15. c5 Nxe4 16. Nxe4 Rfd8 17. Qc4 Rxd1 18. Rxd1 Kh7 19. Nd6 Rd8 20. Qc2
Rd7 21. h3 f5 22. Ne8 Qd8 23. Rxd7 Qxd7 24. Nd6 e4 25. Qd2 b5 26. b4 Be5 27.
Nxe4 Qxd2 28. Nxd2 Bc3 29. Nb3 Bxb4 30. Kf1 Kg7 31. Ke2 Kf6 32. Kd3 Ke5 33. f3
h5 34. g4 h4 35. f4+ Kd5 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "6"]
[White "Mejia, Roberto"]
[Black "Gonzales, S."]
[Result "0-1"]
[ECO "A04"]
[BlackElo "2305"]
[PlyCount "54"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. b3 c5 2. Bb2 Nc6 3. Nf3 d6 4. g3 e5 5. d3 g6 6. Bg2 Bg7 7. O-O ({RR} 7. c4
Nge7 8. Nc3 h6 9. O-O O-O 10. Rb1 Be6 11. Nd2 f5 12. a3 Qd7 13. Ba1 a5 14. Nd5
Rab8 15. Bc3 Bf7 16. Nxe7+ Qxe7 17. b4 axb4 18. axb4 cxb4 19. Bxb4 Nxb4 20.
Rxb4 d5 21. Qb3 dxc4 {Sidorov,A (2370)-Timofeev,A (2522)/St Petersburg 2001/
CBM 082 ext/1/2-1/2 (54)}) ({RR} 7. c4 Nge7 8. O-O O-O 9. Nc3 Rb8 10. Ne1 Be6
11. Nd5 Qd7 12. Nc2 Nd4 13. Nxe7+ Qxe7 14. Ne3 Nf5 15. Nd5 Qd7 16. Qd2 Ne7 17.
f4 f6 18. e4 Nxd5 19. cxd5 Bg4 20. f5 gxf5 21. h3 Bh5 {Dizdarevic,E (2469)
-Berke,A (2153)/Bosnjaci 2012/CBM 146 Extra/1-0 (55)}) 7... Nge7 8. c3 $146 ({
RR} 8. c4 O-O 9. Qd2 Rb8 10. Nc3 Be6 11. e3 a6 12. Ng5 b5 13. Nxe6 fxe6 14. Ne4
Qd7 15. Qe2 Nd8 16. h4 Nf7 17. Bh3 Nf5 18. h5 g5 19. h6 N5xh6 20. Qh5 Qe7 21.
f4 gxf4 22. exf4 d5 {Casas Mor,C-Tikhonov,V/Birstonas 2002/CBM 089 ext/1-0 (32)
}) ({RR} 8. c4 O-O 9. Nc3 Rb8 10. Nd5 e4 11. Bxg7 exf3 12. Bxf8 fxg2 13. Kxg2
Qxf8 14. e4 Nxd5 15. cxd5 Nd4 16. f4 b6 17. g4 Qh6 18. Kg3 g5 19. fxg5 Qxg5 20.
Rf4 h5 21. h4 Qg7 22. g5 Bg4 {Fuchs,F (2073)-Borovikov,V (2582)/Pardubice 2006/
CBM 113 ext/0-1}) 8... O-O 9. e4 f5 10. Qe2 h6 11. d4 fxe4 12. Nfd2 cxd4 13.
cxd4 d5 14. dxe5 Nxe5 15. f3 Qb6+ 16. Kh1 N7c6 17. Nc3 Nd4 18. Qe3 Ndxf3 19.
Qxb6 axb6 20. Nxd5 Nxd2 21. Ne7+ Kh7 22. Rxf8 Bxf8 23. Nxc8 Nd3 24. Nxb6 Rd8
25. Bc3 Bc5 26. Nc4 Nf2+ 27. Kg1 Nxc4 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "6"]
[White "Velez, G."]
[Black "Garcia, Gildardo"]
[Result "0-1"]
[ECO "D36"]
[BlackElo "2430"]
[PlyCount "76"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O 7. Qc2 Nbd7 8.
Bd3 Re8 9. Nf3 Nf8 10. O-O c6 11. a3 Ne4 12. Bf4 Ng5 ({RR} 12... f5 13. Ne5 Ng6
14. Nxg6 hxg6 15. f3 Ng5 16. Kh1 Bd6 17. Bxd6 Qxd6 18. e4 dxe4 19. fxe4 Qxd4
20. exf5 gxf5 21. Bxf5 Be6 22. Rad1 Qc4 23. Qd2 Bxf5 24. Qxg5 Bh7 25. h3 Qe6
26. Qg3 Re7 27. Rd6 {Gulko,B (2585)-Filippov,V (2595)/Elista 1998/CBM 066 ext/
1/2-1/2 (31)}) ({RR} 12... f5 13. Ne5 Bf6 14. b4 a6 15. a4 Nd7 16. Nxd7 Bxd7
17. Qb3 Nd2 18. Qa2 Nxf1 19. Kxf1 Qe7 20. Qb3 Kh8 21. h3 g5 22. Bg3 f4 23. exf4
Bxd4 24. fxg5 Qxg5 25. Rd1 Be5 26. Ne2 Bxg3 27. Nxg3 {Gil,K (1950)-Borovicka,B
(2022)/Ostrava 2011/CBM 142 Extra/0-1 (59)}) 13. Bxg5 Bxg5 14. b4 Be7 $146 ({RR
} 14... a6 15. a4 Be7 16. b5 Bd6 17. bxc6 bxc6 18. Ne2 Bg4 19. Ne5 Bxe2 20.
Bxe2 c5 21. Bf3 cxd4 22. exd4 Bxe5 23. dxe5 Rxe5 24. Rad1 Qa5 25. g3 Rd8 26.
Qb2 Rf5 27. Bg4 Rf6 28. Rd4 Ng6 29. Rfd1 {Christiansen,L (2575)-Garcia,G (2430)
/Saint John 1988/CBM 006/1/2-1/2 (87)}) 15. b5 Bd6 16. bxc6 bxc6 17. h3 Be6 18.
Ne5 Rc8 19. Ba6 Rc7 20. Qa4 Ng6 21. f4 Ne7 22. Rac1 f6 23. Nd3 Nf5 24. Nd1 Bd7
25. Rf3 Qe7 26. Qa5 Nh4 27. Rf2 Bf5 28. Nb4 Qd7 29. Qa4 Be4 30. Nxc6 Bxg2 31.
Rxg2 Qxh3 32. Bf1 Bxf4 33. Qb3 Kh8 34. Rc3 Bh2+ 35. Rxh2 Qg3+ 36. Kh1 Nf3 37.
Rxh7+ Kxh7 38. Qc2+ Re4 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "6"]
[White "Zapata, Alonso"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2500"]
[BlackElo "2375"]
[PlyCount "81"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3
Nc6 9. Qd2 d5 10. exd5 Nxd5 11. Nxd5 Qxd5 12. Qxd5 Bxd5 13. O-O-O O-O-O 14. Bb6
Rd7 15. Bd3 $146 ({RR} 15. Nc5 Bxc5 16. Bxc5 Kc7 17. b3 h5 18. Be2 h4 19. Rhf1
g5 20. Be3 f6 21. Rf2 Rhd8 22. g3 hxg3 23. hxg3 Rh7 24. Rg1 Ne7 25. f4 Nf5 26.
Bd2 e4 27. fxg5 e3 28. Rxf5 exd2+ 29. Kd1 Be4 {Coleman,M-Trammell,G (2086)/
Wichita 2006/CBM 112 ext/1/2-1/2 (47)}) ({RR} 15. Nc5 Rd6 16. Ne4 Rd7 17. Nc5
Bxc5 18. Bxc5 Kc7 19. Bd3 g6 20. Be4 Rhd8 21. Rhe1 Bxe4 22. Rxd7+ Rxd7 23. fxe4
f5 24. c3 f4 25. Rd1 Nb8 26. Kc2 Kc6 27. Rxd7 Nxd7 28. Be7 Nc5 29. Bxc5 Kxc5 {
Antognini,F (2094)-Peptan,C (2477)/Leukerbad 2002/CBM 089 ext/0-1 (35)}) 15...
g6 16. Rhe1 f5 17. Bf1 Be7 18. Nc5 Rd6 19. c4 Bf7 20. Na4 Rxd1+ 21. Rxd1 Bg5+
22. Kc2 Bf6 23. Kb1 Re8 24. Bc5 Bd8 25. Nb6+ Bxb6 26. Bxb6 Be6 27. Kc2 f4 28.
Kc3 Bf5 29. b4 e4 30. fxe4 Bxe4 31. Re1 Nb8 32. g3 Nd7 33. Bh3 f3 34. Kd4 f2
35. Rxe4 Rxe4+ 36. Kxe4 f1=Q 37. Bxf1 Nxb6 38. c5 Na4 39. Kd4 Kc7 40. Bc4 a5
41. Bb3 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "7"]
[White "Acosta, Alejandro"]
[Black "Cuartas, Carlos Enrique"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "2325"]
[BlackElo "2360"]
[PlyCount "94"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nc3 Bg4 5. Bb5 a6 6. Bxc6+ bxc6 7. O-O e6 8.
Qd3 d5 $146 ({RR} 8... Be7 9. Bd2 O-O 10. Rae1 Qb8 11. Bc1 Bh5 12. h3 Qb6 13.
g4 Bg6 14. Qe3 d5 15. Ne5 Rfd8 16. Nxg6 hxg6 17. Rd1 Bb4 18. e5 Nd7 19. a3 Bxc3
20. Qxc3 c5 21. dxc5 Qxc5 22. Qxc5 Nxc5 23. b3 {Morris Hill,R (2063)-Ball,L
(2000)/Thanet 2008/EXT 2011/1/2-1/2 (32)}) ({RR} 8... Be7 9. Bg5 {1/2-1/2 (9)
Sosonko,G (2580)-Kavalek,L (2560)/Wijk aan Zee 1982/MCD}) ({RR} 8... Be7 9. Nd2
O-O 10. Nb3 a5 11. a4 d5 12. Bf4 Bh5 13. Qg3 Ra7 14. exd5 exd5 15. Qe3 Bg6 16.
Qd2 Bb4 17. f3 Nd7 18. Nc1 c5 19. N1e2 c6 20. dxc5 Nxc5 21. Nd4 Qb6 22. Be3 Re7
23. Bf2 {Srebrnic,A (2189)-Mestrovic,Z (2376)/Nova Gorica 2012/CBM 146 Extra/
0-1 (57)}) 9. Ne5 Bh5 10. Nxc6 dxe4 11. Qc4 Qd6 12. Bg5 Bg6 13. Rfe1 Nd5 14.
Ne5 Nb6 15. Qc6+ Qxc6 16. Nxc6 f6 17. Bf4 Kf7 18. Na5 Bb4 19. Nb3 Nd5 20. Bd2
Nxc3 21. Bxc3 Bd6 22. Rac1 Rab8 23. g3 Rb5 24. Nd2 f5 25. b3 Be7 26. f3 Bg5 27.
f4 Bf6 28. Ba1 Rd5 29. c3 Bh5 30. Nc4 g5 31. Ne5+ Kf8 32. c4 Rd6 33. g4 Be8 34.
d5 exd5 35. cxd5 Rxd5 36. Nc4 Bd4+ 37. Bxd4 Rxd4 38. Ne3 Bd7 39. fxg5 f4 40.
Nc2 Rd2 41. Rxe4 Bc6 42. Rc4 Rg2+ 43. Kf1 Rxh2 44. Nd4 Rh1+ 45. Kf2 Rh2+ 46.
Kg1 Rh1+ 47. Kf2 Rh2+ 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "7"]
[White "Agudelo, Antonio"]
[Black "Mejia, Roberto"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2305"]
[PlyCount "68"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 g6 3. b3 Bg7 4. Bb2 O-O 5. Bg2 d5 6. c4 c6 7. O-O Re8 8. Na3 (
{RR} 8. d3 Bg4 9. cxd5 Bxf3 10. Bxf3 cxd5 11. d4 Nc6 12. e3 e6 13. Nc3 Rc8 14.
a3 Na5 15. Na4 Nd7 16. Ra2 Qc7 17. Ba1 b5 18. Nc3 Qb6 19. Qd3 a6 20. Rb1 Nf6
21. a4 b4 22. Ne2 Rc6 {Dastan,B (2402)-Terzi,A (2166)/Porto Carras 2013/CBM
154 Extra/1-0 (58)}) 8... Nbd7 $146 ({RR} 8... Bg4 9. cxd5 Bxf3 10. Bxf3 cxd5
11. d4 {1/2-1/2 (11) David,A (2599)-Vovk,A (2549)/Livigno 2012/CBM 150 Extra})
({RR} 8... Bg4 9. cxd5 cxd5 10. Ne5 Be6 11. Nc2 Nc6 12. Nd4 Nxd4 13. Bxd4 Ng4
14. Nf3 Qd6 15. h3 Ne5 16. Nxe5 Bxe5 17. Bxe5 Qxe5 18. d4 Qd6 19. Qd2 Rec8 20.
Rfc1 b6 21. h4 h5 22. Qb2 Rxc1+ 23. Rxc1 {Garcia,R-Sanguineti,R/Buenos Aires
1958/MCL/1/2-1/2}) 9. Rc1 a6 10. cxd5 cxd5 11. Rc2 b5 12. Ne5 Bb7 13. Qa1 b4
14. Nb1 Nxe5 15. Bxe5 Rc8 16. Rfc1 Rxc2 17. Rxc2 Nh5 18. d3 Qb6 19. Nd2 Qe6 20.
Bxg7 Nxg7 21. Nf3 Rc8 22. Nd4 Qd7 23. Qc1 Rxc2 24. Qxc2 e5 25. Nf3 Qd6 26. d4
e4 27. Ne1 Ne6 28. e3 f5 29. Bf1 Kf7 30. Qd2 Qb6 31. Nc2 a5 32. a3 bxa3 33.
Nxa3 Bc6 34. Qc3 g5 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "7"]
[White "Betancourt, David"]
[Black "Velez, G."]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2230"]
[PlyCount "117"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 c5 3. c3 d5 4. Bg5 Ne4 5. Bf4 Nc6 6. e3 Qb6 7. Qb3 c4 8. Qxb6
({RR} 8. Qc2 h6 9. Nbd2 Bf5 10. Qc1 g5 11. Bg3 Nxg3 12. hxg3 Bg7 13. Be2 O-O
14. Bd1 Bg6 15. Bc2 f5 16. g4 fxg4 17. Bxg6 gxf3 18. Qc2 fxg2 19. Rg1 e5 20.
dxe5 Nxe5 21. Bh7+ Kh8 22. Rxg2 Qe6 {Kopec,D (2362)-Georgiev,V (2535)/
Schaumburg 2006/CBM 111 ext/0-1 (35)}) ({RR} 8. Qc2 Bf5 9. Qc1 h6 10. Nbd2 e6
11. Be2 Rd8 12. O-O Bd6 13. Bxd6 Nxd6 14. Bd1 O-O 15. Bc2 Rfe8 16. Re1 Bxc2 17.
Qxc2 f5 18. b3 Qa6 19. Reb1 b6 20. b4 Qb7 21. b5 Nb8 22. a4 Nd7 {Tymrakiewicz,
R (2222)-Richterova,N (2050)/Karvina 2013/CBM 155 Extra/1-0 (45)}) 8... axb6 9.
Nbd2 g5 $146 ({RR} 9... Nxd2 10. Kxd2 b5 11. Be2 b4 12. cxb4 Nxb4 13. b3 Bf5
14. bxc4 Nc2 15. cxd5 Nxa1 16. Rxa1 f6 17. Bc4 g5 18. Bg3 Kf7 19. Ne1 h5 20. h3
e6 21. e4 exd5 22. Bxd5+ Be6 23. Bxb7 {1/2-1/2 (23) Andersson,F (2316)-Akesson,
J (2351)/Sweden 2008/EXT 2009}) ({RR} 9... Nxd2 10. Nxd2 b5 11. e4 e6 12. Be2
Be7 13. O-O O-O 14. Bf3 g5 15. Bc7 dxe4 16. Nxe4 f5 17. Nd2 g4 18. Be2 Rf7 19.
Bf4 Bf6 20. a4 Ne7 21. axb5 Rxa1 22. Rxa1 Nd5 23. Bd6 Bd7 24. Bxc4 {Dengler,D
(2066)-Johansson,V (2179)/Istanbul 2012/CBM 150 Extra/1-0 (54)}) 10. Bc7 Nxd2
11. Nxd2 b5 12. e4 e6 13. h4 g4 14. Be2 f5 15. exd5 exd5 16. Bf4 Kf7 17. O-O h5
18. a3 Be7 19. g3 Bf6 20. Rfe1 Ne7 21. Bc7 Ng6 22. f4 Re8 23. Bf1 Be6 24. Bg2
Rec8 25. Be5 Bxe5 26. dxe5 Ne7 27. Nf1 Rd8 28. Rad1 Rd7 29. Ne3 Rad8 30. Nc2
Nc6 31. Rd2 Ke8 32. Red1 Kf7 33. Kf1 Ke8 34. Ne3 Ne7 35. Ke1 Kf7 36. Nc2 Nc6
37. Nd4 Nxd4 38. Rxd4 Ke7 39. R1d2 Ke8 40. Kd1 Ke7 41. Kc1 Bf7 42. Kb1 Ke6 43.
b3 Ke7 44. a4 bxa4 45. bxc4 dxc4 46. Rxd7+ Rxd7 47. Rxd7+ Kxd7 48. Bxb7 Be6 49.
Kb2 Kc7 50. Bg2 Kb6 51. Ka3 Kb5 52. Bh1 Bf7 53. Bb7 Be6 54. Bg2 Bf7 55. Bf1 Bd5
56. Be2 Bf3 57. e6 Kc5 58. e7 Bc6 59. Bd1 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "7"]
[White "Gonzales, S."]
[Black "Zapata, Alonso"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "2305"]
[BlackElo "2500"]
[PlyCount "78"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 b5 7. O-O Bb7 8. Bf3
Nc6 9. Nxc6 dxc6 10. e5 Qxe5 11. Re1 Qc7 ({RR} 11... Qd6 12. Bg5 Qxd1 13. Raxd1
Be7 14. Ne4 Nf6 15. Bxf6 gxf6 16. Bh5 Ra7 17. Nd6+ Bxd6 18. Rxd6 Ke7 19. Red1
Ba8 20. b4 c5 21. bxc5 Rc8 22. R6d2 Rxc5 23. Be2 Be4 24. Bd3 Bxd3 25. cxd3 Rac7
26. f3 {Barle,J (2420)-Miles,A (2560)/Bled 1979/MCL/0-1 (42)}) ({RR} 11... Qd6
12. Qe2 Nf6 13. a4 b4 14. Ne4 Nxe4 15. Qxe4 Be7 16. a5 O-O 17. Rd1 Qc7 18. Bf4
Qc8 19. Bd6 Bxd6 20. Rxd6 Rb8 21. Qc4 g6 22. Qc5 Qc7 23. Rad1 Qe7 24. b3 Rfe8
25. Qb6 Qf6 26. Rd7 {Situru,N (2290)-Pham,L (2389)/Jakarta 2013/CBM 156 Extra/
1-0 (48)}) 12. Bh5 Nf6 13. Rxe6+ Be7 14. Qe2 $146 ({RR} 14. Ne4 Nxh5 15. Qxh5
O-O 16. Bf4 Qxf4 17. Rxe7 Bc8 18. Qe5 Qxe5 19. Rxe5 Be6 20. Rc5 Rfd8 21. Re1
Rac8 22. f4 g6 23. g4 Kg7 24. h3 Bd5 25. Nc3 b4 26. Ne2 Re8 27. Kf2 Re4 28. Rd1
Rce8 {Bulatov,R (2065)-Kolomensky,V (2256)/Kurgan 2010/CBM 135 Extra/0-1 (40)})
14... Nxh5 15. Qxh5 g6 16. Qe5 Qxe5 17. Rxe5 f6 18. Re2 Kf7 19. Bf4 Rhe8 20.
Rd1 Rad8 21. Red2 Rxd2 22. Rxd2 Bc8 23. h3 f5 24. Ne2 Bf6 25. c3 Be6 26. Nd4
Bd5 27. f3 Re1+ 28. Kf2 Rb1 29. a3 h5 30. g3 h4 31. Ne2 g5 32. Bc7 g4 33. fxg4
fxg4 34. gxh4 Bxh4+ 35. Bg3 gxh3 36. Bxh4 h2 37. Ng3 Rg1 38. Nh1 Bxh1 39. Ke3
Bg2 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "7"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "2375"]
[BlackElo "2330"]
[PlyCount "70"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e5 5. e3 Be7 ({RR} 5... d6 6. Nge2 Be6 7.
Nd5 Bxd5 8. cxd5 Nb4 9. O-O Qd7 10. e4 Be7 11. a3 Nd3 12. Qb3 Nxc1 13. Rfxc1 h5
14. a4 h4 15. Qb5 Qxb5 16. axb5 hxg3 17. hxg3 Bd8 18. Bf3 Ke7 19. Kg2 Bb6 20.
b3 {Andrade,L (2238)-Ftacnik,L (2551)/Vila Nova de Gaia 2010/EXT 2011/0-1 (41)}
) ({RR} 5... d6 6. Nge2 Bg4 7. O-O Qd7 8. Nd5 Be7 9. b3 h5 10. f3 Bh3 11. Bxh3
Qxh3 12. Nc7+ Kd7 13. Nxa8 Nb4 14. d4 h4 15. Rf2 hxg3 16. Nxg3 Nh5 17. Nxh5
Qxh5 18. dxc5 e4 19. cxd6 Bh4 20. Qf1 {Franco Moncera,J (2068)-Arluck,W (2065)/
Parsippany 2013/CBM 153 Extra/0-1}) 6. Nge2 O-O 7. O-O Nb4 $146 ({RR} 7... h6
8. d4 exd4 9. exd4 cxd4 10. Nxd4 Bc5 11. Nc2 Re8 12. b3 a6 13. Bb2 Re6 14. Nd5
Nh7 15. Nf4 Rd6 16. Bd5 Nf6 17. Nh5 Nxh5 18. Qxh5 Rg6 19. Qxg6 {1-0 (19) Benes,
M (1957)-Vichorec,A/Stare Mesto 2011/EXT 2012}) ({RR} 7... d6 8. a3 Bf5 9. d4
cxd4 10. exd4 Qd7 11. Re1 Rac8 12. d5 Na5 13. b3 b6 14. Bb2 Rfe8 15. Nc1 Bf8
16. N1a2 Bh3 17. Bh1 Qf5 18. Nb4 Bg4 19. f3 Bh3 20. Nb5 Qd7 21. a4 Qb7 22. Nd3
{Koth,S (2153)-Bremer,J (1806)/Germany 2008/EXT 2009/1-0 (36)}) 8. d3 d5 9. a3
dxc4 10. dxc4 Nd3 11. Qc2 Nxc1 12. Raxc1 Qc7 13. Rfd1 Bg4 14. h3 Bd7 15. Nd5
Nxd5 16. cxd5 Bd6 17. Nc3 f5 18. f4 Rae8 19. fxe5 Rxe5 20. e4 f4 21. gxf4 Rxf4
22. Rf1 Rg5 23. e5 Bxe5 24. Ne4 Bd4+ 25. Kh1 Rh5 26. d6 Rxf1+ 27. Rxf1 Qc8 28.
Qb3+ Be6 29. Qf3 Rf5 30. Qe2 Rxf1+ 31. Qxf1 h6 32. Qd3 Qd7 33. b4 b6 34. Qg3
Qf7 35. bxc5 bxc5 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "7"]
[White "Juan, G Arboleda"]
[Black "Baquero, Luis A"]
[Result "1/2-1/2"]
[ECO "C82"]
[WhiteElo "2325"]
[BlackElo "2290"]
[PlyCount "83"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. Nbd2 Nc5 10. c3 Bg4 11. Bc2 Qd7 12. Re1 Rd8 13. Nf1 ({RR} 13. h3 Bh5 14.
Nf1 Be7 15. g4 Bg6 16. Ng3 Bxc2 17. Qxc2 Ne6 18. a4 O-O 19. axb5 axb5 20. Nf5
Rfe8 21. Be3 Bf8 22. Rad1 g6 23. Nh6+ Kh8 24. g5 Bxh6 25. gxh6 b4 26. Qd2 bxc3
27. bxc3 Kg8 {Movsesian,S (2666)-Ivanchuk,V (2719)/Polanica Zdroj 2000/CBM 079/
1/2-1/2 (80)}) 13... Bh5 14. Ng3 Bg6 15. e6 $146 ({RR} 15. Nd4 Ne6 16. Be3
Ncxd4 17. cxd4 Bb4 18. Re2 c5 19. Nf5 O-O 20. a3 cxd4 21. Nxd4 Be7 22. f4 Bc5
23. Nxe6 Bxe3+ 24. Rxe3 fxe6 25. Bxg6 hxg6 26. Qg4 Qf7 27. Rg3 Kh7 28. Qh4+ Kg8
29. Rf1 d4 {Kotronias,V (2505)-Sokolov,I (2580)/Dortmund 1989/CBM 013/1-0 (65)}
) ({RR} 15. Qe2 Be7 16. b4 Ne6 17. Nf5 O-O 18. a4 Rfe8 19. axb5 axb5 20. Qxb5
Nxe5 21. Qxd7 Nxd7 22. Nxe7+ Rxe7 23. Bb3 Nf6 24. Ne5 Ree8 25. Ba4 Ra8 26. Be3
Rf8 27. f3 Ra6 28. Bc6 Rxa1 29. Rxa1 Rb8 {Stankiewicz,P (2005)-Niering,M (2165)
/Marianske Lazne 2011/CBM 140 Extra/1-0 (91)}) 15... Nxe6 16. Bxg6 hxg6 17. Ng5
Be7 18. Nxe6 fxe6 19. a4 Kf7 20. axb5 axb5 21. Qd3 Rb8 22. Ne4 Ne5 23. Qg3 dxe4
24. Qxe5 Bd6 25. Qxe4 Bxh2+ 26. Kf1 Bd6 27. Qf3+ Kg8 28. Kg1 Rh5 29. Ra8 Rxa8
30. Qxa8+ Kh7 31. Qf3 e5 32. Qe4 Qd8 33. g4 Rh3 34. Qg2 Rd3 35. Qh1+ Kg8 36.
Qe4 Bc5 37. Qxe5 Rd1 38. Kg2 Qd3 39. Rxd1 Qxd1 40. Qf4 Bd6 41. Qg5 Qd3 42. Qe3
1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "7"]
[White "Suarez, Luis A"]
[Black "Henao, Raul Fernando"]
[Result "1/2-1/2"]
[ECO "C92"]
[BlackElo "2345"]
[PlyCount "53"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Bb7 10. d3 Re8 11. Nbd2 Bf8 12. Nf1 Na5 13. Bc2 c5 14. Ng3 g6 15. d4
cxd4 16. cxd4 Bg7 17. d5 Rc8 18. Bd3 $146 ({RR} 18. a4 b4 19. Bd3 Nd7 20. Bg5
Qb6 21. Be3 Nc5 22. Nd2 Qd8 23. Bf1 Bf6 24. b3 Bg5 25. Rb1 Bxe3 26. Rxe3 Rc7
27. Be2 Bc8 28. Bg4 Qg5 29. Bxc8 Rexc8 30. Nf5 Qf6 31. Rg3 Kh8 32. Ne3 Qf4 {
Amanov,Z (2413)-Pallavi,D (1824)/New Delhi 2009/CBM 128 Extra/1-0 (56)}) 18...
Nc4 19. Nh2 h5 20. b3 Nb6 21. Bd2 Nbd7 22. Rc1 Qb6 23. Rxc8 Rxc8 24. Ngf1 Nc5
25. Bb1 a5 26. g4 b4 27. Ng3 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "8"]
[White "Cuartas, Carlos Enrique"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "2360"]
[BlackElo "2375"]
[PlyCount "126"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 c6 5. Be3 Nf6 6. Nf3 O-O 7. Bd3 b5 8. e5 Nd5
9. Nxd5 cxd5 10. O-O a6 11. Qe1 $146 ({RR} 11. a4 b4 12. Qe1 Nc6 13. Qg3 Bf5
14. Bxf5 gxf5 15. Qh3 e6 16. g4 Ne7 17. Bf2 fxg4 18. Qxg4 Nf5 19. Nh4 Nh6 20.
Qh3 Rc8 21. c3 bxc3 22. bxc3 f5 23. Be1 dxe5 24. fxe5 Qg5+ 25. Ng2 Rb8 {
Kotronias,V (2578)-Gelashvili,T (2551)/Chalkidiki 2002/CBM 089 ext/1/2-1/2 (42)
}) ({RR} 11. Qd2 Nc6 12. c3 Bf5 13. Bxf5 gxf5 14. Qd3 e6 15. g4 Ne7 16. h3 Kh8
17. a4 Qb6 18. exd6 Qxd6 19. axb5 axb5 20. Rxa8 Rxa8 21. Qxb5 Rb8 22. Qe2 fxg4
23. hxg4 f6 24. Bc1 Qd7 25. Re1 e5 {Hladik,O (2243)-Lys,J (2359)/Moravia 2003/
EXT 2006/1/2-1/2 (55)}) 11... Nc6 12. a3 dxe5 13. fxe5 f5 14. Qg3 Qe8 15. h4 h6
16. Kh1 e6 17. Ng1 Kh8 18. Nh3 Rg8 19. Qf2 Ra7 20. Qd2 Qd8 21. g3 Bf8 22. Rf2
Rh7 23. Rh2 Bb7 24. Kg1 Qb6 25. Qf2 b4 26. a4 b3 27. c3 a5 28. Nf4 Ne7 29. Rc1
Ba6 30. Qe2 Bxd3 31. Qxd3 g5 32. hxg5 hxg5 33. Rxh7+ Kxh7 34. Nh5 Kg6 35. g4
Bh6 36. Rf1 Qc6 37. Nf6 Rh8 38. Qd1 Bg7 39. gxf5+ exf5 40. Rf2 Bxf6 41. exf6
Kxf6 42. Qf3 Qd6 43. Qg4 Ke6 44. Qe2 Kf6 45. Rg2 f4 46. Bd2 Rg8 47. Qh5 Nf5 48.
Qg4 Rg7 49. Re2 Qd7 50. Re5 Nh6 51. Qf3 Qg4+ 52. Qxg4 Nxg4 53. Rxd5 Rh7 54.
Rd6+ Ke7 55. Rd5 f3 56. Rf5 f2+ 57. Kg2 Ke6 58. Rf8 Rh2+ 59. Kf1 Rh1+ 60. Ke2
Rb1 61. c4 Rxb2 62. d5+ Ke7 63. Rf5 Rxd2+ 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "8"]
[White "Garcia, Gildardo"]
[Black "Betancourt, David"]
[Result "0-1"]
[ECO "B93"]
[WhiteElo "2430"]
[BlackElo "2230"]
[PlyCount "118"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nbd7 8. a4
Be7 9. Bc4 O-O 10. O-O b6 11. Kh1 Bb7 12. Qe2 h6 13. Nh4 Re8 $146 ({RR} 13...
Nxe4 14. Nf5 Nef6 15. fxe5 Nxe5 16. Bf4 Qc7 17. Bb3 Rae8 18. Qd2 Nh7 19. Bxh6
gxh6 20. Qxh6 Bf6 21. Rf4 Bc8 22. Ne4 Qd8 23. Nexd6 Bxf5 24. Nxf5 Re6 25. Rh4
Ng5 26. Rh5 Qd2 27. Ne7+ Rxe7 28. Qxf6 {Hou,Y (2578)-Dzagnidze,N (2525)/
Rogaska Slatina 2011/CBM 144 Extra/1-0}) 14. Nf5 Bf8 15. Qf3 Rc8 16. Ba2 Rxc3
17. Qxc3 Nxe4 18. Qh3 d5 19. Be3 Qc7 20. c3 Ndc5 21. fxe5 Qxe5 22. Bd4 Qe6 23.
Rae1 Nxa4 24. Qh5 g6 25. Nxh6+ Kh7 26. Qf3 f5 27. Ng4 fxg4 28. Qf7+ Qxf7 29.
Rxf7+ Kg8 30. Rxb7 Ng3+ 31. hxg3 Rxe1+ 32. Kh2 Bc5 33. Bxc5 Nxc5 34. Rxb6 Kg7
35. Bxd5 Nd3 36. Rb7+ Kh6 37. Rf7 Nxb2 38. Rf4 Kg5 39. Rd4 Rc1 40. c4 a5 41.
Be6 a4 42. Rxg4+ Kf6 43. Bg8 Nd3 44. c5 Kg7 45. Rd4 Nf2 46. g4 Kxg8 47. Rxa4
Rxc5 48. Kg3 Nd3 49. Kh4 Ne5 50. Kg5 Kg7 51. Ra7+ Nf7+ 52. Kf4 Rc4+ 53. Kg3 Kf6
54. Ra6+ Kg5 55. Ra5+ Kh6 56. Kh3 Rc3+ 57. g3 Ng5+ 58. Kg2 Rc2+ 59. Kg1 Nf3+
0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "8"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Gonzales, S."]
[Result "1-0"]
[ECO "C72"]
[WhiteElo "2330"]
[BlackElo "2305"]
[PlyCount "97"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c4 Bd7 6. d4 Nxd4 7. Nxd4 exd4 8.
Bxd7+ Qxd7 9. Qxd4 Nf6 10. Nc3 Be7 11. O-O O-O 12. h3 $146 ({RR} 12. b3 Rfe8
13. f3 Bf8 14. Bb2 Rad8 15. Rad1 b6 16. Kh1 Re6 17. Rf2 g6 18. Nd5 Bg7 19. Qd2
Nxd5 20. cxd5 Re7 21. Bxg7 Kxg7 22. g4 a5 23. Rc1 h6 24. h4 f6 25. Qc3 g5 26.
Rh2 Kg6 {Oechslein,R (2176)-Pietruske,S (1819)/Schloss Schney 2006/EXT 2007/
1-0 (41)}) ({RR} 12. Bf4 Rfe8 13. Rad1 Qg4 14. Bg3 Nh5 15. f3 Qg6 16. Nd5 Nxg3
17. hxg3 Bd8 18. Kf2 f5 19. Nf4 Qf7 20. exf5 Qxf5 21. g4 Qf7 22. Qd5 Rb8 23. b3
b5 24. Rfe1 Rxe1 25. Rxe1 Bf6 26. cxb5 axb5 {Meier,K (2105)-Kovacova,Z (2098)/
Turin 2006/CBM 113/1-0 (53)}) 12... Rfe8 13. Re1 h6 14. Bf4 b5 15. Rad1 Rad8
16. Qd3 Rb8 17. cxb5 axb5 18. e5 Nh5 19. Bh2 b4 20. Ne4 f5 21. Nc5 Qc6 22. Na6
Ra8 23. Nxb4 Qb7 24. Qd5+ Qxd5 25. Nxd5 dxe5 26. Rxe5 Bc5 27. Rxf5 g6 28. Rxh5
gxh5 29. Nf6+ Kf7 30. Nxe8 Rxe8 31. Kf1 c6 32. Rc1 Bb4 33. Bf4 Re6 34. a3 Ba5
35. Be3 Ke8 36. b4 Bd8 37. a4 Kd7 38. a5 Re4 39. Bc5 Kc8 40. a6 Bf6 41. b5 cxb5
42. Bd4+ Kb8 43. Bxf6 Ka7 44. Ra1 b4 45. Ra4 Rc4 46. Ke2 Rc2+ 47. Kd3 b3 48.
Bd4+ Ka8 49. Rb4 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "8"]
[White "Henao, Raul Fernando"]
[Black "Juan, G Arboleda"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2345"]
[BlackElo "2325"]
[PlyCount "61"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd6 7. O-O Nf6 8.
Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Bd7 11. c3 a6 12. Qe2 Qc7 13. a4 ({RR} 13. Rd1
Bd6 14. h3 O-O 15. Bd3 Bh2+ 16. Kh1 Bf4 17. Nf3 Bxc1 18. Raxc1 Rfd8 19. c4 a5
20. b3 Qc5 21. Kg1 Bc6 22. Bc2 Kf8 23. Ne5 h6 24. Nxc6 Qxc6 25. Rd2 b6 26. Rcd1
Ke7 27. a3 Qc5 {Xie Jun (2485)-Andersson,U (2635)/Tallinn 1998/CBM 062 ext/0-1
(76)}) ({RR} 13. g3 O-O-O 14. Bf4 Bd6 15. Bxd6 Qxd6 16. Nf3 Qc7 17. Ne5 Be8 18.
Rfd1 Rxd1+ 19. Rxd1 Nd7 20. Nxd7 Bxd7 21. Qd3 Bc6 22. Bb3 Qe5 23. f4 Qh5 24.
Rd2 Re8 25. Bd1 Qc5+ 26. Qd4 Qxd4+ 27. Rxd4 e5 {Vega Chirino,L (2362)-Calvo
Quinteiro,J (2248)/Havana 2013/CBM 154 Extra/1-0 (49)}) 13... Bc5 $146 ({RR}
13... Bd6 14. h3 O-O 15. Bg5 Bf4 16. Bxf6 gxf6 17. Bd3 Kh8 18. Qh5 f5 19. Rfe1
Rad8 20. Bf1 Bc8 21. Rad1 Rg8 22. Nf3 Rde8 23. Qh4 Rg7 24. g3 Bd6 25. Bg2 Be7
26. Qd4 Bc5 27. Qe5 Qxe5 28. Rxe5 {Mickiewicz,P (2347)-Bronowicki,M (2326)/
Ustron 2008/CBM 126 Extra/1-0 (77)}) 14. Bg5 Bxd4 15. cxd4 Qd6 16. Bxf6 gxf6
17. Rfd1 O-O-O 18. b4 Kb8 19. a5 Bc6 20. b5 axb5 21. Bxb5 Rhg8 22. Bxc6 Qxc6
23. g3 Rg5 24. a6 Rb5 25. Rdc1 Qd7 26. Qe4 bxa6 27. Rxa6 Qd5 28. Qf4+ Kb7 29.
Rca1 Rb1+ 30. Rxb1+ Kxa6 31. Qc7 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "8"]
[White "Mejia, Roberto"]
[Black "Suarez, Luis A"]
[Result "1/2-1/2"]
[ECO "A38"]
[PlyCount "27"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 c5 6. O-O Nc6 7. Rb1 d6 8. a3
Bd7 ({RR} 8... d5 9. b3 h6 10. cxd5 Nxd5 11. Nxd5 Qxd5 12. d3 Bd7 13. Be3 Qh5
14. Qd2 a5 15. Rfc1 b6 16. Ne1 Rac8 17. Bf3 Qh3 18. Bg2 Qe6 19. Nc2 h5 20. d4
Nxd4 21. Nxd4 cxd4 22. Bxd4 Rxc1+ 23. Rxc1 {Andersson,U (2625)-Ivanchuk,V
(2625)/Reggio Emilia 1988/CBM 011/1/2-1/2 (50)}) 9. h3 ({RR} 9. b4 b6 10. d3
Rc8 11. bxc5 bxc5 12. Bd2 Rb8 13. Qa4 Rb6 14. Rxb6 Qxb6 15. Rb1 Qc7 16. Nb5 Qb7
17. Nc3 Qc7 18. Ne1 Ne5 19. Qa6 Rb8 20. Rxb8+ Qxb8 21. Nb5 Bxb5 22. cxb5 c4 23.
Be3 Qc7 {Kostov,S (1934)-Denisenko,A/Albena 2013/CBM 154 Extra/1-0 (55)}) 9...
Rb8 $146 ({RR} 9... a5 10. d3 e5 11. Bg5 h6 12. Bxf6 Bxf6 13. Nd2 Be7 14. Nd5
Rb8 15. Ne4 f5 16. Nec3 Kg7 17. e3 Bg5 18. f4 Bf6 19. Nb5 Be6 20. Nxf6 Rxf6 21.
Nc3 Ne7 22. Nd5 Nxd5 23. cxd5 Bg8 24. fxe5 {Graham,S (1992)-Batsaikhan,O (2100)
/Oklahoma City 2011/CBM 143 Extra/0-1 (53)}) 10. b4 b6 11. Nd5 e5 12. d3 Nxd5
13. cxd5 Ne7 14. Qb3 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "8"]
[White "Velez, G."]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "E74"]
[BlackElo "2325"]
[PlyCount "121"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5 7. d5 b5 8. cxb5 a6
9. a4 h6 10. Bd2 e6 11. dxe6 Bxe6 12. Nf3 axb5 13. Bxb5 Na6 14. O-O Nb4 ({RR}
14... Nc7 15. Re1 Nxb5 16. Nxb5 d5 17. exd5 Nxd5 18. Ne5 Re8 19. Rc1 Bf5 20.
Nc6 Qd7 21. Rxc5 Rxe1+ 22. Qxe1 Re8 23. Qc1 Nb6 24. b3 Re2 25. Ba5 Be4 26. Ne5
Qe7 27. Nd4 Ra2 28. Bxb6 Bxe5 29. Qe3 {Tukmakov,V (2480)-Kasparov,G (2630)/
Frunze 1981/URS-ch/0-1}) ({RR} 14... Nc7 15. Be2 Qb8 16. Qc1 Kh7 17. Bf4 Rd8
18. Rd1 Qb6 19. h3 Bb3 20. Rd2 Ne6 21. Be3 Qb4 22. e5 Ne8 23. exd6 Nxd6 24. Nb5
Nc4 25. Bxc4 Bxc4 26. Nd6 Rxd6 27. Rxd6 Bxb2 28. Qe1 Bxa1 29. Qxa1 {Afanasiev,
V (2297)-Drazic,S (2473)/Split 2013/CBM 155 Extra/1/2-1/2 (156)}) 15. Be3 Qb6
16. Qd2 $146 ({RR} 16. Qc1 Kh7 17. h3 Rfc8 18. Rd1 Bb3 19. Rd2 Qb7 20. Rxd6
Nxe4 21. Rd7 Qxd7 22. Bxd7 Nxc3 23. bxc3 Rd8 24. Ra3 Na2 25. Qb2 c4 26. Rxa2
Bxa2 27. Qxa2 Rxd7 28. Qxc4 Rd1+ 29. Kh2 {1-0 (29) Alburt,L (2555)-Shibut,M
(2225)/New York 1991/CBM 023}) 16... Kh7 17. Rfc1 Rfc8 18. e5 dxe5 19. Nxe5
Nfd5 20. Nxd5 Nxd5 21. Nd7 Qa5 22. Qxa5 Rxa5 23. Rxc5 Rd8 24. Rxd5 Bxd5 25. Bb6
Rxb5 26. Bxd8 Rxb2 27. Nf6+ Bxf6 28. Bxf6 Rb6 29. Bd4 Rd6 30. a5 Bb7 31. Bc5
Rc6 32. Be3 Ba6 33. h4 Rc4 34. g3 Kg7 35. Rd1 Ra4 36. Rd8 Ra1+ 37. Kh2 Rxa5 38.
Bd4+ f6 39. Rd7+ Kf8 40. Bxf6 h5 41. Kg2 Bb5 42. Rc7 Ra6 43. Be7+ Ke8 44. Kf3
Re6 45. Ba3 Bd3 46. Bc1 Re7 47. Rc8+ Kd7 48. Rc3 Bf5 49. Kf4 Ke6 50. Kg5 Rd7
51. Bf4 Rd5 52. Rc7 Bd3+ 53. Kh6 Rd7 54. Rc6+ Kf7 55. Be5 Re7 56. Rf6+ Kg8 57.
f4 g5 58. Bd6 Rh7+ 59. Kxg5 Rg7+ 60. Kxh5 Rxg3 61. Kh6 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "8"]
[White "Zapata, Alonso"]
[Black "Agudelo, Antonio"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "2500"]
[BlackElo "2305"]
[PlyCount "105"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ne2 cxd4 8. cxd4
f6 9. exf6 Nxf6 10. O-O Bd6 11. Nf3 O-O 12. Bg5 Kh8 ({RR} 12... Qb6 13. Rb1 Bd7
14. b4 a6 15. b5 axb5 16. Rxb5 Qc7 17. Qb1 Na5 18. Rb2 h6 19. Bd2 Bc6 20. Ne5
Nc4 21. Bxc4 dxc4 22. Nxc6 bxc6 23. h3 Rfb8 24. Rxb8+ Qxb8 25. Qc2 Qb5 26. Bf4
Bxf4 27. Nxf4 {Polgar,J (2686)-Bobula,M (2393)/Warsaw 2010/CBM 139 Extra/1/2-1/
2 (43)}) ({RR} 12... Qb6 13. Bxf6 Rxf6 14. Qd2 Bd7 15. a3 Raf8 16. b4 Kh8 17.
Qc2 Rxf3 18. gxf3 Nxd4 19. Nxd4 Qxd4 20. Rfe1 Qf4 21. Rac1 Qxh2+ 22. Kf1 Qh3+
23. Ke2 Qxf3+ 24. Kf1 e5 25. Re3 Qxe3 {0-1 (25) Nikolic,S (1907)-Klajderic,D/
Ptuj 2012/CBM 152 Extra}) 13. Bh4 e5 14. dxe5 Nxe5 15. Ned4 $146 ({RR} 15. Nxe5
Bxe5 16. Bg3 Bxb2 17. Rb1 Ba3 18. Qa4 Bd6 19. Bxd6 Qxd6 20. Qh4 Ne4 21. f3 Nf6
22. Nf4 Re8 23. Rb5 Be6 24. Rxb7 Reb8 25. Rxg7 Kxg7 26. Qg5+ Kf7 27. Nh5 Nxh5
28. Qxh5+ Kf8 29. Qh6+ Ke8 {Priborsky,I (2205)-Blazkova,P (2226)/Olomouc 2004/
CBM 101 ext/1/2-1/2 (65)}) 15... Qb6 16. Bxf6 Nxf3+ 17. Qxf3 Rxf6 18. Qxd5 Bd7
19. Rae1 Rd8 20. Re4 Bc5 21. Qh5 Rh6 22. Qg5 Rf8 23. Qd5 Rd6 24. Qh5 Rh6 25.
Qd5 Rd6 26. Qh5 h6 27. Nf3 Rxd3 28. Ne5 Be8 29. Qe2 Rd4 30. Re3 Rdf4 31. Nc4
Rxc4 32. Rxe8 Rcf4 33. Kh1 Qf6 34. Re6 Qf7 35. f3 b6 36. Qe5 Rf6 37. Rxf6 Qxf6
38. Qe2 Qe7 39. Qc4 Re8 40. a3 a5 41. g3 Qe2 42. Qc1 Re7 43. b4 axb4 44. axb4
Bxb4 45. Qc8+ Re8 46. Qc1 Bc5 47. h4 Qe6 48. Kg2 Re7 49. Qb1 Qe2+ 50. Kh3 Qe6+
51. g4 Rd7 52. Re1 Qf7 53. Qe4 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "9"]
[White "Acosta, Alejandro"]
[Black "Garcia, Gildardo"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "2325"]
[BlackElo "2430"]
[PlyCount "67"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. O-O Be7 7. e5 Ne4 8.
Nxd4 O-O 9. Nf5 d5 10. exd6 Bxf5 11. dxe7 Nxe7 12. Bb3 Nc5 13. Nc3 Nxb3 14.
cxb3 b5 $146 ({RR} 14... Qxd1 15. Rxd1 c6 16. b4 Rfd8 17. Be3 Be6 18. Bb6 Rxd1+
19. Rxd1 Nd5 20. Nxd5 Bxd5 21. Re1 {1/2-1/2 (21) Horvath,A (2532)-Gyimesi,Z
(2602)/Szekesfehervar 2006/CBM 112}) ({RR} 14... Qxd1 15. Rxd1 Rad8 16. Bf4 {
1/2-1/2 (16) Kramnik,V (2777)-Adams,M (2725)/Cap d'Agde 2003/CBM 098}) ({RR}
14... Qxd1 15. Rxd1 Rfd8 16. Bf4 c6 17. b4 Nd5 18. Nxd5 Rxd5 19. Rxd5 cxd5 20.
Be3 Rc8 21. Rc1 Rxc1+ 22. Bxc1 d4 23. Bf4 f6 24. Kf1 Kf7 25. Bd6 Ke6 26. Bf8 g6
27. Ke2 Bb1 28. a3 Kd5 29. Kd2 {Zawadzka,J (2389)-Romanishin,O (2530)/Legnica
2012/CBM 151 Extra/1/2-1/2 (35)}) ({RR} 14... c6 15. Qf3 Be6 16. Be3 Bd5 17.
Qf4 Be6 {1/2-1/2 (17) Bagirov,V-Keres,P/Baku 1961/URS-ch}) 15. Qf3 c6 16. Be3
b4 17. Na4 Be6 18. Bc5 Bd5 19. Qg3 Re8 20. Rfe1 a5 21. Nb6 Ng6 22. Rxe8+ Qxe8
23. Nxa8 Qxa8 24. Re1 h6 25. h4 Qd8 26. h5 Nf8 27. Bxf8 Qxf8 28. Qc7 Kh7 29.
Qd7 Qb8 30. Qf5+ Kh8 31. Qe5 Qb5 32. Qf5 Qb8 33. Re7 Qd8 34. Qd7 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "9"]
[White "Agudelo, Antonio"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2305"]
[BlackElo "2330"]
[PlyCount "60"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. O-O Nc6 5. d3 e6 6. Nbd2 Be7 7. e4 dxe4 8.
dxe4 O-O 9. c3 Rb8 ({RR} 9... Qd3 10. Re1 Rd8 11. Re3 Qd7 12. Qc2 e5 13. h3 Qc7
14. a4 b6 15. Nc4 Ba6 16. Bf1 Na5 17. Nxa5 Bxf1 18. Kxf1 bxa5 19. Rd3 c4 20.
Rxd8+ Rxd8 21. Bg5 Rd3 22. Ne1 Qd7 23. Ke2 Nxe4 24. Nxd3 {Grigoryan,A (2407)
-Timoshenko,I (2266)/Nevinnomyssk 2010/EXT 2013/0-1 (40)}) ({RR} 9... Re8 10.
Qe2 e5 11. a4 Bg4 12. Nc4 Qc7 13. Bg5 {1/2-1/2 (13) Pecurica,M (2120)
-Djukanovic,M (1773)/Cetinje 2012/EXT 2013}) 10. e5 $146 ({RR} 10. Re1 b5 11.
Qe2 Nd7 12. Nf1 c4 13. h4 Bb7 14. N1h2 Nc5 15. Rd1 Qe8 16. Bf4 Rd8 17. Qc2 Nd3
18. Be3 Rd7 19. b3 Qc8 20. bxc4 bxc4 21. Nd2 Ba6 22. Nhf3 Bf6 23. Bg5 Bd8 24.
Bxd8 Rfxd8 {Bjarnason,S (2265)-Vidarsson,J (2380)/Hafnarfjordur 1997/CBM 062
ext/1/2-1/2 (80)}) ({RR} 10. Qe2 b5 11. Nb3 Qc7 12. e5 Nd5 13. Re1 c4 14. Nbd4
Bc5 15. Nxc6 Qxc6 16. Ng5 h6 17. Ne4 Rd8 18. Qg4 Kf8 19. Qh4 Bb7 20. Bxh6 gxh6
21. Qxh6+ Ke7 22. Nf6 Qb6 23. Qg5 Nxf6 24. Qxf6+ Ke8 {Ivetic,S (2016)-Filip,M
(2093)/Ljubljana 2010/CBM 138 Extra/0-1 (51)}) 10... Nd7 11. Re1 b5 12. c4 a6
13. b3 Bb7 14. Bb2 Nb4 15. Bf1 Nb6 16. cxb5 Nd3 17. Bxd3 Qxd3 18. bxa6 Qxa6 19.
Qe2 Qa8 20. Red1 Rfd8 21. Ne1 Bc6 22. Rdc1 Rd7 23. Nc4 Nxc4 24. bxc4 Rbd8 25.
Bc3 Qa4 26. Rab1 Bb7 27. Qc2 Qxc4 28. Ba5 Qxc2 29. Rxc2 Ra8 30. Rcb2 Rxa5
1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "9"]
[White "Baquero, Luis A"]
[Black "Henao, Raul Fernando"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2290"]
[BlackElo "2345"]
[PlyCount "104"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 c5 2. Nf3 cxd4 3. Nxd4 Nf6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. Nc3 Nc6 8.
Nb3 d6 9. h3 Be6 10. e4 Rc8 ({RR} 10... Nd7 11. Nd5 b5 12. Qe2 Rb8 13. c3 b4
14. cxb4 Nxb4 15. Be3 Ne5 16. Rfd1 a5 17. Nd4 Qd7 18. Nb6 Qd8 19. Nxe6 fxe6 20.
Na4 Qd7 21. b3 Qb5 22. Qxb5 Rxb5 23. Bd4 Nc2 24. Bxe5 Bxe5 25. Rac1 {Granda
Zuniga,J (2620)-Lautier,J (2630)/Wijk aan Zee 1997/CBM 057/1-0 (88)}) ({RR}
10... a5 11. a4 Bxb3 12. cxb3 Nd7 13. Re1 Nc5 14. Bf1 f5 15. exf5 Rxf5 16. Be3
Kh8 17. Rb1 Qg8 18. Bc4 Qf8 19. g4 Re5 20. Kg2 g5 21. Qd2 h6 22. h4 Qc8 23. f3
gxh4 24. Bxh6 Qf8 25. Rh1 {Barrero Garcia,C (2350)-Khamrakulov,I (2509)/
Seville 2013/CBM 152 Extra/1-0 (40)}) 11. Nd5 Bxd5 $146 ({RR} 11... Ne5 12. Qe2
Bd7 13. c3 b5 14. Bg5 Nxd5 15. exd5 a5 16. a3 b4 17. cxb4 axb4 18. Rfc1 bxa3
19. Rxa3 Qb6 20. Be3 Qb4 21. Rxc8 Rxc8 22. Na5 h5 23. Qd2 Qb5 24. Bd4 Bf5 25.
Nc6 Rc7 26. Nxe5 {Wirthensohn,H (2330)-Tal,M (2660)/Bath 1973/EU-chT/1/2-1/2})
({RR} 11... Ne5 12. Nd4 Bd7 13. b3 Nc6 14. Bb2 Nxd5 15. exd5 Nxd4 16. Bxd4 Bxd4
17. Qxd4 Rxc2 18. Qxa7 Qc8 19. h4 Bb5 20. Rfe1 Qc3 21. Be4 Re2 22. Rec1 Qf6 23.
Bg2 Kg7 24. f3 Rc8 25. Bf1 Rec2 26. Rxc2 {Brasket,C (2189)-Donaldson,J (2435)/
Sioux Falls 2001/CBM 084 ext/0-1}) 12. exd5 Ne5 13. a4 Nfd7 14. Ra2 Nc4 15. Nd2
Nxd2 16. Bxd2 Re8 17. Re1 a6 18. a5 Rc5 19. b3 Bc3 20. Bxc3 Rxc3 21. Qd2 Qc7
22. Re3 Rxe3 23. Qxe3 Qc5 24. Qd2 Nf6 25. Ra1 Qc7 26. Re1 b5 27. axb6 Qxb6 28.
Ra1 Ra8 29. Ra4 h5 30. Bf1 Qb7 31. Bg2 Rc8 32. Kh2 Rc5 33. Qd3 a5 34. Rc4 Nd7
35. Rxc5 Nxc5 36. Qe3 Qc7 37. Qc3 Qb6 38. Qe3 Qc7 39. Qc3 Qb6 40. Qe1 Qc7 41.
Qa1 Na6 42. Qa4 Nb4 43. Qe8+ Kg7 44. Be4 Qc5 45. Kg1 Nxc2 46. Qxe7 Nd4 47. h4
Qc1+ 48. Kg2 Qe1 49. g4 Ne2 50. g5 Qg1+ 51. Kf3 Nd4+ 52. Ke3 Nf5+ 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "9"]
[White "Gonzales, S."]
[Black "Cuartas, Carlos Enrique"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "2305"]
[BlackElo "2360"]
[PlyCount "74"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. c3 cxd4 5. cxd4 Nf6 6. Nc3 d5 7. exd5 O-O 8.
Bc4 Nbd7 9. O-O Nb6 10. Bb3 Nbxd5 11. Ne5 Be6 12. Re1 Rc8 13. Qf3 Qd6 14. Bg5
Nxc3 15. bxc3 Bd5 16. Qh3 $146 ({RR} 16. Qd3 Rfd8 17. c4 Be4 18. c5 Qxe5 19.
Bxf6 Bxd3 20. Bxe5 Bf8 21. Rac1 Bh6 22. Rcd1 Bb5 23. d5 Rxc5 24. Bd4 Rc7 25.
Bxa7 Rdd7 26. g3 Rc8 27. Be3 Bf8 28. Bf4 Rdd8 29. Rc1 Bd3 30. f3 b5 {Egin,V
(2444)-Safin,S (2481)/Tashkent 2008/CBM 123 Extra/1/2-1/2 (37)}) ({RR} 16. Qd3
Bxb3 17. axb3 a6 18. Ra5 Rfd8 19. Qf3 h6 20. Bd2 Qb8 21. Qh3 h5 22. Bf4 Qa7 23.
Nxg6 fxg6 24. Rxe7 Qb6 25. b4 Ng4 26. Qf3 Qf6 27. Rxb7 Rxc3 28. Qxc3 Qxf4 29.
Rxg7+ Kxg7 30. d5+ Kh7 {Gallardo Fernandez,C (2150)-Siebrecht,S (2457)/Seville
2007/CBM 116 ext/0-1 (34)}) 16... b5 17. Bxf6 exf6 18. Nd7 Rfd8 19. Nc5 f5 20.
Qd3 Bxg2 21. Qxb5 Ba8 22. Nb7 Qf6 23. Bd5 a6 24. Qb3 Rd7 25. Rab1 Rb8 26. Qc4
Bf8 27. Bc6 Rc7 28. Na5 Rxb1 29. Rxb1 Bxc6 30. d5 Qg5+ 31. Kh1 Ba8 32. Nc6 f4
33. f3 Bxc6 34. dxc6 Qf5 35. Rb8 Re7 36. c7 Re1+ 37. Kg2 Qg5+ 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "9"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Velez, G."]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2375"]
[PlyCount "112"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. O-O Be7 8.
d3 O-O 9. a3 Be6 10. b4 a5 11. b5 Nd4 12. Rb1 f6 13. Nxd4 exd4 14. Na4 Nd5 15.
Bb2 c5 16. bxc6 b5 17. Bxd4 bxa4 18. Qxa4 Qd6 19. Ra1 $146 ({RR} 19. e4 Nc7 20.
Bb6 Rfb8 21. d4 Rxb6 22. Rxb6 Qxa3 23. Qxa3 Bxa3 24. Rfb1 Kf8 25. d5 Bg4 26.
Rb7 Bd6 27. f3 Bc8 28. Rb8 Ke7 29. Rxa8 Nxa8 30. Bf1 a4 31. Kf2 Nb6 32. Rb5 a3
33. Ra5 Bb4 {Voiska,M (2335)-Kachiani Gersinska,K (2365)/Azov 1990/TD/0-1 (39)}
) 19... Rfc8 20. Rfc1 Bd8 21. Rc2 Nb6 22. Bxb6 Bxb6 23. Rb1 Bc5 24. Rb5 Bxa3
25. Rxa5 Rab8 26. h4 Bb3 27. Qg4 Bxc2 28. Qc4+ Kh8 29. Qxc2 Qb4 30. Ra4 Qb1+
31. Qxb1 Rxb1+ 32. Kh2 Bd6 33. Bf3 Rb4 34. Ra7 Rxh4+ 35. Kg2 Rd4 36. Be4 g6 37.
e3 Bb8 38. Ra8 Rb4 39. g4 Kg7 40. d4 Kf7 41. Kf3 Ke7 42. Ra1 Kd6 43. Ra5 Rc7
44. Rd5+ Ke7 45. Rc5 Rb2 46. Rc1 Ra7 47. Bd5 Kd6 48. Bg8 Rg7 49. Bc4 Kxc6 50.
e4 Kd6 51. g5 fxg5 52. e5+ Ke7 53. Ke4 Rxf2 54. Rb1 Bc7 55. Kd5 Rf4 56. Ra1 Bb6
0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "9"]
[White "Juan, G Arboleda"]
[Black "Mejia, Roberto"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "2325"]
[PlyCount "67"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 d6 6. Be3 Nf6 7. f3 Nc6 8. Qd2
Nxd4 9. Bxd4 O-O 10. O-O-O Be6 11. Kb1 a6 12. g4 b5 13. h4 b4 14. Nd5 Bxd5 15.
exd5 Qa5 16. g5 Nh5 17. Bxg7 Kxg7 18. Bh3 f5 19. gxf6+ Rxf6 $146 ({RR} 19...
Nxf6 20. Be6 Qc5 21. Rdg1 Nh5 22. Rg5 Rf6 23. Re1 Nf4 24. Bd7 h6 25. Bc6 hxg5
26. hxg5 Rf5 27. Bxa8 Nxd5 28. f4 Nxf4 29. Rxe7+ Kf8 30. Re4 a5 31. a4 Nh3 32.
Rd4 Nxg5 33. Rxd6 Nf7 34. Rd5 {Pulkkinen,K (2302)-Hartikainen,M (2272)/Finland
1999/EXT 2001/0-1 (38)}) 20. Bg4 Nf4 21. Rhe1 h5 22. Rxe7+ Kf8 23. Re4 Qxd5 24.
Rxf4 Qxd2 25. Rxf6+ Kg7 26. Rxd2 Kxf6 27. Bh3 Ke5 28. b3 Rf8 29. Rg2 Rxf3 30.
Bc8 Rf4 31. Rxg6 Rxh4 32. Bxa6 Rh2 33. Bc8 d5 34. Rg5+ 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "9"]
[White "Suarez, Luis A"]
[Black "Zapata, Alonso"]
[Result "0-1"]
[ECO "B20"]
[BlackElo "2500"]
[PlyCount "32"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. b4 cxb4 3. Bb2 d5 4. exd5 Qxd5 5. a3 e5 6. axb4 ({RR} 6. Nf3 Nc6 7.
c4 Qe4+ 8. Be2 Nf6 9. O-O bxa3 10. Nxa3 Bc5 11. Nxe5 Nxe5 12. d4 Bxd4 13. Qxd4
Qxd4 14. Bxd4 Nc6 15. Be3 O-O 16. Nb5 Bg4 17. f3 Bd7 18. Kf2 b6 19. Ra3 Be6 20.
Rfa1 Rac8 {Zajarnyi,A (2395)-Salinnikov,D (2403)/Alushta 2000/CBM 075 ext/1/
2-1/2 (31)}) ({RR} 6. Qf3 Qxf3 7. Nxf3 f6 8. d4 e4 9. Nfd2 f5 10. axb4 Bxb4 11.
c3 Bd6 12. Na3 Bxa3 13. Rxa3 Nf6 14. Nc4 Nc6 15. Nb6 Rb8 16. Nxc8 Rxc8 17. Rb3
b6 18. Rb5 g6 19. Bc4 Nxd4 20. Re5+ Kd7 {Rewitz,P (2253)-Hauge,L (2071)/Odense
2012/CBM 148 Extra/0-1 (53)}) 6... Bxb4 7. c4 Qc5 $146 ({RR} 7... Qe6 8. Nf3
Nc6 9. Bd3 Nf6 10. O-O O-O 11. Re1 Qd6 12. Qb3 Bg4 13. Bxe5 Nxe5 14. Nxe5 Rae8
15. f4 Qd4+ 16. Kh1 Qxa1 17. Qxb4 Qd4 {0-1 (17) Boor,C (2233)-Aramil,W (2215)/
Las Vegas 2006/CBM 112 ext}) ({RR} 7... Qe4+ 8. Be2 Nc6 9. Nf3 Nge7 10. O-O O-O
11. Re1 Ng6 12. Nc3 Bxc3 13. Bxc3 Nd4 14. Nxd4 exd4 15. Bf3 Qf4 16. Re4 Qg5 17.
Bxd4 Bf5 18. Re1 Rad8 19. Be3 Qh4 20. Bc5 Rfe8 21. Qa4 Bd7 22. Qxd7 {Woerner,M
(1996)-Ersoez,C (1923)/Bayern 2005/EXT 2007/1-0 (33)}) 8. f4 Nc6 9. fxe5 Nh6
10. Nf3 O-O 11. Qe2 Re8 12. h3 Nf5 13. Qf2 Nxe5 14. Nxe5 Rxe5+ 15. Be2 Qxf2+
16. Kxf2 Bc5+ 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "10"]
[White "Cuartas, Carlos Enrique"]
[Black "Agudelo, Antonio"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2360"]
[BlackElo "2305"]
[PlyCount "122"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 O-O 5. g3 c6 6. Bg2 d6 7. O-O Bf5 8. Nh4
Bd7 9. e4 e5 10. Nf3 Qc7 ({RR} 10... Re8 11. h3 Na6 12. Re1 exd4 13. Nxd4 Qb6
14. Nb3 Rad8 15. Be3 c5 16. Bg5 Be6 17. Qf3 Nd7 18. Bxd8 Rxd8 19. Nd5 Bxd5 20.
exd5 Bxb2 21. Rab1 Bg7 22. Nd2 Qa5 23. Rxb7 Qxd2 24. Re7 f5 25. Rbxd7 {
Portisch,L (2625)-Larsen,B (2615)/Rotterdam 1977/Candidates/1-0}) 11. h3 a6
$146 ({RR} 11... Re8 12. Be3 Na6 13. Qd2 exd4 14. Nxd4 Nc5 15. Qc2 a5 16. Rfe1
Re7 17. f4 Rae8 18. Bf2 Nh5 19. Qd2 Nf6 20. e5 dxe5 21. Nf3 Ne6 22. fxe5 Nh5
23. Ne4 Rd8 24. c5 Bxe5 25. Nxe5 Qxe5 26. Nd6 {Woellermann,J (2095)-Steinacker,
A (2118)/Osnabrueck 2011/CBM 146 Extra/1/2-1/2 (56)}) 12. c5 dxc5 13. dxe5 Ne8
14. Bg5 Be6 15. Bd8 Qd7 16. Qxd7 Nxd7 17. Be7 Nc7 18. Bxf8 Rxf8 19. Kh2 b5 20.
Rfd1 Nxe5 21. Nxe5 Bxe5 22. f4 Bd4 23. Rac1 a5 24. Ne2 Bxb2 25. Rxc5 Na6 26.
Rxc6 Nb4 27. Rc5 Bc4 28. Rd2 Ba3 29. Nc3 Rb8 30. e5 Bc1 31. Rd7 h5 32. Bd5 Nxd5
33. Nxd5 Ba3 34. Rc6 Bxa2 35. e6 Bxd5 36. Rxd5 fxe6 37. Rxe6 Kf7 38. Rc6 a4 39.
Ra6 b4 40. Rxa4 b3 41. Ra7+ Be7 42. Re5 b2 43. Rexe7+ Kf6 44. Rf7+ Ke6 45.
Rae7+ Kd6 46. Re1 b1=Q 47. Rf6+ Kd5 48. Rxb1 Rxb1 49. h4 Ke4 50. Ra6 Kf3 51.
Rc6 Ra1 52. Rb6 Rc1 53. f5 gxf5 54. Rb4 Ke3 55. Rf4 Rc2+ 56. Kh3 Rf2 57. Ra4
Re2 58. Ra8 Rd2 59. Ra7 Rd6 60. Rf7 Ke4 61. Re7+ Kd4 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "10"]
[White "Garcia, Gildardo"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2430"]
[BlackElo "2375"]
[PlyCount "69"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 c6 5. O-O b5 6. Bb3 ({RR} 6. Bd3 Nd7 7. a4
b4 8. a5 Ngf6 9. Qe2 e5 10. c3 bxc3 11. bxc3 O-O 12. Re1 Re8 13. dxe5 Nxe5 14.
Nxe5 Rxe5 15. Bf4 Re8 16. Qc2 Nd5 17. Bg3 Nb4 18. Qd2 Nxd3 19. Qxd3 d5 20. e5
c5 {Asmundsson,I (2395)-Kagan,S (2385)/Nice 1974/EXT 2000/0-1 (40)}) ({RR} 6.
Bd3 Bg4 7. c3 Nf6 8. Re1 O-O 9. h3 Be6 10. Qe2 Nbd7 11. Ng5 a6 12. Be3 Nb6 13.
f4 Bc4 14. Nd2 Bxd3 15. Qxd3 Rc8 16. e5 Nfd5 17. e6 f5 18. g3 Qc7 19. Bf2 Nf6
20. Nf1 d5 {Fernandez Perez,J (2072)-Navarro Alvarez,A (1973)/Santa Susanna
2013/CBM 154 Extra/0-1 (57)}) 6... e6 7. Re1 $146 ({RR} 7. Qe2 a6 8. c3 Nd7 9.
Bg5 Qc7 10. Nbd2 Nb6 11. Rac1 d5 12. e5 Ne7 13. Bf6 Bxf6 14. exf6 Nf5 15. Ne5
Bb7 16. g4 Nd6 17. Bc2 O-O-O 18. b3 Nd7 19. Nxd7 Rxd7 20. Rfd1 Ne8 21. Qe5 Qd8
{Moeckel,E (2049)-Schratzenstaller,A/Bad Woerishofen 2002/EXT 2003/1-0 (41)})
7... Ne7 8. Bf4 Qc7 9. a4 bxa4 10. Rxa4 e5 11. dxe5 dxe5 12. Be3 O-O 13. Nbd2
Bg4 14. h3 Bxf3 15. Qxf3 Nd7 16. Rea1 Nc8 17. Nc4 Kh8 18. Ra6 Nb8 19. R6a5 Nd7
20. Bd2 Rb8 21. Bc3 f6 22. Qd3 Rb5 23. Rxb5 cxb5 24. Ne3 Nc5 25. Qxb5 Nxe4 26.
Bb4 Rd8 27. Nd5 Qf7 28. Ra6 f5 29. Nc3 Nxc3 30. Bxc3 Qe8 31. Qc5 e4 32. Be6 Qe7
33. Bxg7+ Qxg7 34. Bxc8 Qxb2 35. Qc7 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "10"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Suarez, Luis A"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2330"]
[PlyCount "49"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4
g5 9. fxg5 Nh7 10. Bc4 hxg5 11. Bg3 Nf6 $146 ({RR} 11... Qc7 12. Bb3 Nc6 13.
Rf1 Nxd4 14. Qxd4 Rg8 15. O-O-O Bg7 16. Bxd6 Bxd4 17. Bxc7 Bf6 18. Na4 b5 19.
Nb6 Ra7 20. Bb8 Rb7 21. Nxc8 Rxb8 22. Nd6+ Kd7 23. e5 Bg7 24. Rxf7+ Kc6 25.
Bxe6 Bxe5 26. Bd7+ {Lampert,J (2376)-Royset,P (2179)/Oslo 2013/CBM 156 Extra/
1-0}) 12. Qf3 Be7 13. O-O-O g4 14. Qe2 Qa5 15. e5 dxe5 16. Nb3 Qb6 17. Bxe5
Nbd7 18. Bg3 Nc5 19. Rhf1 Nxb3+ 20. Bxb3 Qc5 21. Be5 Rh6 22. Qd2 Qxe5 23. Qxh6
Nd5 24. Qh7 Nxc3 25. Qxf7# 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "10"]
[White "Mejia, Roberto"]
[Black "Baquero, Luis A"]
[Result "0-1"]
[ECO "D79"]
[BlackElo "2290"]
[PlyCount "50"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c4 c6 7. cxd5 cxd5 8. Nc3
Nc6 9. h3 Ne4 10. Be3 ({RR} 10. Nxe4 dxe4 11. Ng5 Nxd4 12. Nxe4 Be6 13. Bd2 Qb6
14. b3 Rfd8 15. e3 Nc6 16. Rc1 Nb4 17. Qe2 Nxa2 18. Rb1 a5 19. Be1 Nb4 20. Bc3
Bxc3 21. Nxc3 Rac8 22. Na4 Qa6 23. Qxa6 bxa6 24. Nb6 Rc5 {Cheremnova,T (2289)
-Shinkevich,V (2489)/St Petersburg 2013/CBM 156 Extra/0-1 (53)}) 10... Nxc3 11.
bxc3 Bf5 $146 ({RR} 11... Na5 12. Qc1 Bf5 13. Bh6 Be4 14. Bxg7 Kxg7 15. Nd2
Bxg2 16. Kxg2 Rc8 17. Qc2 Rc6 18. Rac1 Qc7 19. e4 Rc8 20. Nb1 dxe4 21. Qxe4 Re6
22. Qf3 Nc4 23. Rfe1 Rxe1 24. Rxe1 e6 25. h4 h5 26. Rc1 {Frotscher,T (2214)
-Gruber,T (2277)/Schwarzburg 2004/CBM 107/1/2-1/2 (38)}) 12. Nh4 Be6 13. f4 Qa5
14. Qd3 Rad8 15. f5 Bc8 16. Rab1 Rd6 17. Bf4 e5 18. fxe6 Rxe6 19. Rb5 Qxa2 20.
Rf2 Ne7 21. e4 dxe4 22. Bxe4 Qa6 23. c4 Qa1+ 24. Qb1 Qxb1+ 25. Bxb1 Bxd4 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "10"]
[White "Velez, G."]
[Black "Gonzales, S."]
[Result "1-0"]
[ECO "D17"]
[BlackElo "2305"]
[PlyCount "143"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 c6 3. Nc3 d5 4. Nf3 dxc4 5. a4 Bf5 6. Ne5 e6 7. Nxc4 Bb4 8. Bg5
Nbd7 ({RR} 8... h6 9. Bf4 Nd5 10. Bd2 O-O 11. e3 Nb6 12. Ne5 N8d7 13. Nd3 Bd6
14. Be2 Nc4 15. Bc1 e5 16. Nc5 Bxc5 17. Bxc4 exd4 18. exd4 Bd6 19. O-O Nf6 20.
Qf3 Bg4 21. Qd3 Bc7 22. Re1 Qd6 23. g3 {Castro Rojas,O (2392)-Uribe,M (2414)/
Cali 2008/CBM 126 Extra/0-1 (37)}) ({RR} 8... O-O 9. f3 c5 10. dxc5 Qxd1+ 11.
Rxd1 Nd5 12. e4 Nxc3 13. bxc3 Bxc3+ 14. Kf2 Bg6 15. Nd6 Nc6 16. Nxb7 Rfb8 17.
Bb5 Nd4 18. Ba6 e5 19. Rd3 Bb4 20. Be3 Ne6 21. Rb3 Nc7 22. Rxb4 Nxa6 23. Rbb1 {
Girya,O (2406)-Olsarova,K (2189)/Gaziantep 2012/CBM 147 Extra/1-0 (39)}) 9. f3
h6 10. Bh4 g5 11. Bf2 $146 ({RR} 11. Bg3 Nb6 12. e4 Bxe4 13. Nxb6 axb6 14. fxe4
Nxe4 15. Qd3 Nxg3 16. hxg3 Qd6 17. Be2 O-O-O 18. O-O-O Bxc3 19. Qxc3 Kc7 20. g4
f5 21. Kb1 f4 22. Bf3 Kb8 23. a5 b5 24. b4 Rd7 25. Kc2 Qe7 {Rajesh,V (2237)
-Jaswant,G (1934)/Chennai 2008/CBM 127 Extra/1-0 (38)}) ({RR} 11. Bg3 Nb6 12.
e4 Bg6 13. Ne5 Bh5 14. Be2 Nbd7 15. O-O Nxe5 16. Bxe5 O-O 17. f4 Bxe2 18. Qxe2
Nd7 19. Qh5 Nxe5 20. dxe5 Kg7 21. Rf3 f6 22. Rh3 Rh8 23. Rd1 Qe7 24. exf6+ Kxf6
25. e5+ Kg7 {Fronczek,H (2275)-Klein,K (2120)/Freudenstadt 2002/EXT 2003/1-0
(43)}) 11... Bg6 12. e4 Qe7 13. Be2 O-O 14. O-O Rfd8 15. Qb3 a5 16. e5 Nd5 17.
Nxd5 exd5 18. Ne3 f6 19. exf6 Nxf6 20. Bd3 Qh7 21. Bxg6 Qxg6 22. Bg3 Nh5 23.
Be5 Rf8 24. Nc2 Bd6 25. Bxd6 Qxd6 26. Rae1 Rae8 27. Ne3 Nf4 28. g3 Ne6 29. Qd3
Ng7 30. Ng4 Re6 31. Rxe6 Qxe6 32. Qd2 Re8 33. Qxa5 Nf5 34. Qd2 Kg7 35. Kf2 Nd6
36. Ne5 Nf5 37. Re1 Nd6 38. b3 Qh3 39. Kg1 Nf5 40. Ng4 Nxg3 41. Nf2 Re2 42.
Nxh3 Rxd2 43. hxg3 Kf7 44. Nf2 Rxd4 45. Kf1 h5 46. Ke2 h4 47. g4 Rb4 48. Rb1
Rb6 49. b4 c5 50. Nd3 c4 51. Nc5 h3 52. b5 d4 53. a5 d3+ 54. Kd2 Rh6 55. Nxb7
h2 56. Rh1 Ke6 57. a6 Kd5 58. Kc3 Rh8 59. Na5 Kc5 60. Nxc4 Kxb5 61. Kxd3 Kxa6
62. Ke4 Kb5 63. Nd6+ Kc6 64. Nf7 Re8+ 65. Kf5 Re2 66. Kxg5 Kd5 67. Kh4 Kd4 68.
Kg3 Ke3 69. Rxh2 Re1 70. Nd6 Rg1+ 71. Rg2 Rf1 72. Nf5+ 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "10"]
[White "Zapata, Alonso"]
[Black "Juan, G Arboleda"]
[Result "1/2-1/2"]
[ECO "C09"]
[WhiteElo "2500"]
[BlackElo "2325"]
[PlyCount "122"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 cxd4 7. O-O Bd6 8.
Re1+ Nge7 9. Nxd4 O-O 10. N2b3 Qc7 ({RR} 10... a6 11. Bd3 Nb4 12. Bf1 Qc7 13.
g3 Nf5 14. Bg2 Nxd4 15. Nxd4 Be5 16. c3 Bxd4 17. cxd4 Be6 18. Bf4 Qc2 19. Bd6
Qxd1 20. Rexd1 Nc2 21. Rac1 Rfd8 22. Bc7 {1-0 (22) Calzetta Ruiz,M (2276)-Alaa
el Din,Y (1819)/Istanbul 2012/CBM 150 Extra}) ({RR} 10... Ne5 11. Bf1 N7c6 12.
Bf4 Qf6 13. Bg3 Bg4 14. Be2 Be6 15. c3 Rad8 16. Nxc6 Nxc6 17. Bxd6 Rxd6 18. Bb5
d4 19. Bxc6 Bxb3 20. Qxb3 bxc6 21. cxd4 Rxd4 22. Re2 a5 23. Rae1 g6 24. Qc3 Qd6
25. Re3 {Zapata,A (2470)-Schweber,S (2360)/Buenos Aires 1998/CBM 067 ext/1/2-1/
2 (41)}) 11. g3 ({RR} 11. h3 Ne5 12. Bd3 Bd7 13. Bf4 N7g6 14. Bxg6 hxg6 15.
Bxe5 Bxe5 16. Qf3 Qd6 17. Rad1 Rfe8 18. c3 Bc6 19. Qd3 Bf6 20. Nb5 Rxe1+ 21.
Rxe1 Qf4 22. N5d4 Re8 23. Rxe8+ Bxe8 24. Qe2 Kf8 25. g3 Qd6 {Sutovsky,E (2609)
-Psakhis,L (2611)/Ramat Aviv/Modiin 2000/CBM 081/1/2-1/2 (44)}) 11... Ne5 12.
Bf1 Bg4 $146 ({RR} 12... a6 13. Bg2 Bg4 14. f3 Bd7 15. c3 Rfe8 16. Qc2 Nc4 17.
Bg5 h6 18. Bxe7 Bxe7 19. f4 Bf6 20. Qf2 Qd6 21. Rad1 Rxe1+ 22. Rxe1 a5 23. Nc1
b5 24. Nd3 b4 25. b3 Na3 26. cxb4 axb4 27. Ne5 {Zapata,A (2355)-Agdestein,S
(2280)/Thessaloniki 1984/EXT 1997/1-0 (40)}) 13. f3 Bd7 14. Bg2 Nc4 15. c3 Rfe8
16. Qc2 h6 17. Be3 b5 18. Bf2 a5 19. Nc1 Rac8 20. f4 Qb8 21. Nce2 b4 22. b3 Na3
23. Qd3 Bc5 24. Rac1 Qb6 25. Rf1 Nb5 26. cxb4 axb4 27. h3 Nxd4 28. Nxd4 Nc6 29.
Nxc6 Bxf2+ 30. Rxf2 Bxc6 31. Rd1 Ra8 32. Qd4 Re1+ 33. Kh2 Qxd4 34. Rxd4 Ra1 35.
Rdd2 Kf8 36. Rfe2 Re8 37. g4 Re7 38. Kg3 Ke8 39. Bxd5 Bxd5 40. Rxe7+ Kxe7 41.
Rxd5 Rxa2 42. Rd4 Rc2 43. Rxb4 Rc3+ 44. Kg2 Rc2+ 45. Kf3 Rc3+ 46. Ke4 Rxh3 47.
Rb7+ Kf6 48. Rb6+ Ke7 49. f5 Rg3 50. Kf4 Rd3 51. b4 Rd4+ 52. Kf3 Rc4 53. Kg3
Rc3+ 54. Kh4 Rc4 55. b5 Rc3 56. g5 hxg5+ 57. Kxg5 Rg3+ 58. Kf4 Rg1 59. Rc6 Rb1
60. b6 g6 61. fxg6 fxg6 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "11"]
[White "Agudelo, Antonio"]
[Black "Velez, G."]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2305"]
[PlyCount "120"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 e5 4. O-O d6 5. c4 Nf6 6. Nc3 O-O 7. d3 a5 8. Bd2 h6
9. Rb1 Nc6 10. a3 Be6 11. b4 ({RR} 11. e4) 11... axb4 12. axb4 Nd7 $146 ({RR}
12... Qd7 13. Qc1 Kh7 14. Ne4 Nh5 15. e3 f5 16. Nc3 e4 17. Nd4 Nxd4 18. exd4 f4
19. Nxe4 Bh3 20. Bxf4 Bxg2 21. Kxg2 Rxf4 22. gxf4 Qg4+ {0-1 (22) Fengewisch,
N-Forgacs,G (2325)/Wiesbaden 1990/GER}) ({RR} 12... Qd7 13. Ne1 Bh3 14. b5 Bxg2
15. Kxg2 Nd4 16. e4 Ra3 17. Nc2 Nxc2 18. Qxc2 Rfa8 19. Qb2 c6 20. Ra1 Rxa1 21.
Rxa1 Rxa1 22. Qxa1 cxb5 23. Qa8+ Kh7 24. Nxb5 d5 25. exd5 Nxd5 26. Qa3 Qc6 27.
f3 {Wind,P (1953)-Stiller,J (2170)/Bayern 2010/EXT 2012/1/2-1/2 (47)}) 13. Ne1
Rb8 14. b5 Ne7 15. Nc2 Kh7 16. Nb4 Nc5 17. Nbd5 Nf5 18. Bc1 Nd4 19. e3 Nf5 20.
Ba3 Qd7 21. Qc2 Ne7 22. Rfd1 Bf5 23. Rd2 Ne6 24. Ne4 Ng8 25. h3 Bxe4 26. dxe4
b6 27. h4 Ra8 28. Bb4 Ra7 29. Kh2 Rfa8 30. Bh3 h5 31. Bc3 Qd8 32. Nb4 Ne7 33.
f4 Qh8 34. f5 Nc5 35. Rf2 Bf6 36. Rbf1 g5 37. hxg5 Bxg5 38. f6 Ng8 39. Nd5 Kh6
40. Qb1 Ra3 41. Bg2 Nd7 42. Bb2 R3a7 43. Ne7 Ndxf6 44. Nf5+ Kg6 45. Bh3 Nh6 46.
Kg2 Nhg4 47. Ne7+ Kg7 48. Bxg4 hxg4 49. Rh1 Qf8 50. Nd5 Ng8 51. Rh5 Qd8 52. Nb4
f6 53. Nc6 Qe8 54. Qh1 Ra2 55. Rh7+ Kf8 56. Rxc7 Qg6 57. Qd1 Qxe4+ 58. Kh2 Qg6
59. Qxd6+ Ke8 60. Qe6+ Kf8 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "11"]
[White "Baquero, Luis A"]
[Black "Zapata, Alonso"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "2290"]
[BlackElo "2500"]
[PlyCount "113"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nbd7 7. Nc3 e5 8. h3
Re8 9. e4 c6 10. Rb1 a5 11. Qc2 exd4 12. Nxd4 Nc5 13. Be3 Qe7 14. f3 ({RR} 14.
Rfe1 Nfxe4 15. Nxe4 Nxe4 16. Bxe4 Qxe4 17. Bd2 Bf5 18. Rxe4 Bxe4 19. Qd1 Bxb1
20. Qxb1 Bxd4 21. Kf1 a4 22. Qc2 Re6 23. Bc3 Bxc3 24. Qxc3 d5 25. cxd5 cxd5 26.
Qb4 Rd8 27. Qxa4 d4 28. Qa5 b6 {Goczo,M (2263)-Tesik,C (2249)/Szombathely 2010/
CBM 137 Extra/0-1 (33)}) 14... Nh5 15. Nde2 $146 ({RR} 15. Kh2 f5 16. Nde2 fxe4
17. fxe4 Be5 18. Nf4 Nxg3 19. Kxg3 g5 20. Kh2 Ne6 21. Nce2 Rf8 22. Qd2 gxf4 {
0-1 (22) Birnbaum,W-Schinke,A/Mecklenburg VP 1996/EXT 2002}) 15... f5 16. g4
Nf6 17. gxf5 gxf5 18. Ng3 Be6 19. Bxc5 dxc5 20. e5 Nd7 21. f4 Rf8 22. Nd5 Qf7
23. Nc7 Rad8 24. Nxe6 Qxe6 25. Rbd1 Qg6 26. Kh2 Nxe5 27. Rxd8 Rxd8 28. Nxf5 Kh8
29. fxe5 Bxe5+ 30. Kh1 h5 31. a4 h4 32. Qe4 Bf6 33. b3 Qg5 34. Qe3 Qxe3 35.
Nxe3 Bg5 36. Ng4 Rd3 37. Rf3 Rd1+ 38. Bf1 Kg7 39. Kg2 Rb1 40. Rd3 Kf8 41. Be2
Ke7 42. Bd1 Bf4 43. Nf2 Ke6 44. Bg4+ Ke5 45. Rd7 b6 46. Nd3+ Ke4 47. Bf3+ Ke3
48. Re7+ Kxd3 49. Be4+ Kc3 50. Bxb1 Kxb3 51. Rb7 Bd2 52. Rxb6+ Bb4 53. Kf3 Kxa4
54. Bc2+ Ka3 55. Ke2 a4 56. Kd3 Ba5 57. Rb7 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "11"]
[White "Gonzales, S."]
[Black "Garcia, Gildardo"]
[Result "1-0"]
[ECO "C82"]
[WhiteElo "2305"]
[BlackElo "2430"]
[PlyCount "47"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. c3 Bc5 10. Qd3 O-O 11. Nbd2 f5 12. exf6 Nxf6 13. Ng5 Bf7 14. Nxf7 Rxf7
15. Nf3 Qd6 16. Bg5 Rd7 $146 ({RR} 16... Ne7 17. Rae1 c6 18. Bh4 Ng6 19. Bg3
Qd7 20. Ng5 Re7 21. Bc2 Rxe1 22. Rxe1 Re8 23. Rxe8+ Qxe8 24. Kf1 Bb6 25. Qf5
Nf8 26. Bd6 Ng6 27. f3 Bd8 28. h4 Qd7 29. Qxd7 Nxd7 30. Bf5 Bxg5 31. Bxd7 {
Prasad,D (2425)-Takashima,B/Singapore 1987/EXT 1997/1-0 (32)}) ({RR} 16... Rd8
17. Rae1 Re7 18. Bh4 Kh8 19. a4 Rxe1 20. Rxe1 Ne4 21. axb5 axb5 22. Qxd5 Qxd5
23. Bxd5 Rxd5 24. Rxe4 h6 25. Kf1 Rd1+ 26. Re1 Rd5 27. Bg3 Bb6 28. Re6 Na5 29.
Ke2 Nb3 30. Bf4 Rd8 31. Re7 {Vachier Lagrave,M (2525)-Heinz,T (2231)/France
2005/EXT 2006/1-0 (37)}) 17. Rae1 Rf8 18. Bh4 Na5 19. Bc2 Nc4 20. Ng5 Ne4 21.
Nxe4 dxe4 22. Qxe4 g6 23. Rd1 Nd2 24. Bb3+ 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "11"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Betancourt, David"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2375"]
[BlackElo "2230"]
[PlyCount "164"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. c4 d6 5. O-O O-O 6. Nc3 e5 7. d3 h6 8. Rb1 a5
9. a3 Re8 10. Nd2 c6 11. b4 axb4 12. axb4 d5 13. b5 ({RR} 13. Bb2 Be6 14. Ra1
Na6 15. b5 Nc5 16. Na4 Nfd7 17. Nxc5 Nxc5 18. Qc2 Rc8 19. bxc6 bxc6 20. Rfc1 d4
21. Ba3 Bf8 22. Bxc5 Bxc5 23. Rcb1 Bf8 24. Ra6 c5 25. Rbb6 Kg7 26. Qa2 Bd7 27.
Bd5 Rb8 {Vaganian,R (2645)-Van Wely,L (2560)/New York 1994/CBM 041 ext/1/2-1/2
(63)}) ({RR} 13. Qc2 Be6 14. Bb2 Nbd7 15. Rfe1 Bf8 16. Ba1 Qc7 17. e3 Nb6 18.
Ne2 Ra3 19. c5 Nbd7 20. Bb2 Ra2 21. Nc3 Raa8 22. Ra1 b6 23. Rxa8 Rxa8 24. d4
bxc5 25. bxc5 exd4 26. exd4 Bf5 27. Qb3 Rb8 {Valdes,L (2440)-Fluvia Poyatos,J
(2447)/Badalona 2013/CBM 155 Extra/0-1 (65)}) 13... Bf8 $146 ({RR} 13... Be6
14. Qb3 Nbd7 15. Ba3 Bf8 16. Bxf8 Rxf8 17. bxc6 bxc6 18. Qb7 d4 19. Nce4 Nxe4
20. Nxe4 Rc8 21. Qa6 Rc7 22. Qa3 Bg4 23. Rfe1 Nf6 24. Rb6 Nxe4 25. Bxe4 c5 26.
Qb2 Kg7 27. Ra1 Qe7 28. Raa6 {Wolfsteiner,H (2305)-Koepke,C (2365)/Augsburg
2010/EXT 2011/1-0 (97)}) ({RR} 13... Be6 14. bxc6 bxc6 15. Qc2 Bf8 16. Bb2 Na6
17. Na2 Bg4 18. Rfe1 Qd7 19. Nf3 Bd6 20. Bc3 Bh3 21. Qc1 d4 22. Bd2 Bxg2 23.
Kxg2 Nc5 24. Nb4 h5 25. Qc2 Ng4 26. Ra1 Rxa1 27. Rxa1 e4 28. dxe4 {Zlotnikov,M
(2385)-Van Wely,L (2560)/New York 1993/TD/0-1 (37)}) 14. Qc2 d4 15. Na4 c5 16.
Ra1 Nbd7 17. Nb3 Rb8 18. b6 Ra8 19. Bd2 Kh7 20. Rfb1 Bd6 21. Na5 Rb8 22. Bc1
Nf8 23. Ba3 Qe7 24. Nb3 Ne6 25. Nd2 Bd7 26. Bc1 Rec8 27. Nb2 Bc6 28. Ne4 Bxe4
29. dxe4 Nd7 30. Nd3 Ra8 31. Ra7 Nxb6 32. Rxa8 Nxa8 33. f4 f6 34. f5 Nd8 35.
fxg6+ Kxg6 36. Nf4+ Kg7 37. Nd5 Qd7 38. Qb3 Rc6 39. Qf3 Bf8 40. Qh5 Kg8 41.
Bxh6 Bxh6 42. Qxh6 Qg7 43. Qh5 Nc7 44. Bh3 Rd6 45. Bf5 Nxd5 46. exd5 Kf8 47.
Rb5 b6 48. Rb1 Nb7 49. Bc8 Na5 50. Ba6 Qf7 51. Qh8+ Qg8 52. Qh3 Kg7 53. Rf1 Qf8
54. Rf5 Qe8 55. Rh5 Qg6 56. Rh8 f5 57. Bc8 Rf6 58. Be6 Rf8 59. Rh5 f4 60. Bf5
Rxf5 61. Rxf5 Nxc4 62. Rh5 Nd6 63. Rxe5 Nf7 64. Re6 Qg5 65. Qh4 f3 66. Qxg5+
Nxg5 67. Re7+ Kf8 68. d6 c4 69. Kf2 c3 70. exf3 d3 71. Rc7 Nh3+ 72. Ke3 d2 73.
Rc8+ Kf7 74. d7 d1=Q 75. d8=Q Qe1+ 76. Kd4 Qd2+ 77. Ke5 Qe3+ 78. Kd5 Qd3+ 79.
Ke5 Qxd8 80. Rxd8 b5 81. Rb8 Nf2 82. Kd4 Nh1 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "11"]
[White "Henao, Raul Fernando"]
[Black "Mejia, Roberto"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2345"]
[PlyCount "57"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e6 7. O-O Be7 8.
Be3 O-O 9. f4 a6 10. a4 Qc7 11. Kh1 Nxd4 12. Bxd4 e5 13. Be3 b6 ({RR} 13... Be6
14. a5 Bc4 15. Bb6 Qc6 16. Bxc4 Qxc4 17. Ra4 Qc6 18. Qf3 Nd7 19. Rb4 Nxb6 20.
Rxb6 Qc5 21. Rxb7 Bf6 22. b4 Qc4 23. Qd3 Qxd3 24. cxd3 exf4 25. Nd5 Be5 26.
Nxf4 Bxf4 27. Rxf4 Rac8 28. Kg1 {Metev,M (1995)-Yovkov,Y/Sofia 2013/CBM 153
Extra/1-0 (47)}) 14. Bd3 $146 ({RR} 14. fxe5 dxe5 15. Bg5 Rd8 16. Qe1 Ng4 17.
Bxg4 Bxg5 18. Bxc8 Raxc8 19. Rd1 Qc4 20. Qg3 Bf4 21. Qg4 Kh8 22. Qh4 f6 23. Nd5
Qxe4 24. Nxf6 Rxd1 25. Rxd1 Qxc2 26. Rf1 gxf6 27. Qxf6+ Kg8 28. Qe6+ Kg7 {
Stojanovic,N (2075)-Mladenovic,J (2122)/Leskovac 2002/CBM 086 ext/0-1 (33)})
14... Bb7 15. Qe2 Nd7 16. Bc4 Nf6 17. Rad1 Rab8 18. fxe5 dxe5 19. Bg5 b5 20.
axb5 axb5 21. Nxb5 Qc5 22. Bxf6 Bxf6 23. Nd6 Bc6 24. b3 Qa7 25. h3 Bd7 26. Bd5
Qc7 27. Qh5 Be8 28. Rxf6 gxf6 29. Nf5 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "11"]
[White "Juan, G Arboleda"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2325"]
[BlackElo "2330"]
[PlyCount "95"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Qd2
Be7 9. O-O-O Nbd7 10. f3 b5 11. Kb1 Nb6 ({RR} 11... O-O 12. g4 b4 13. Ne2 a5
14. g5 Nh5 15. Ng3 Nf4 16. h4 a4 17. Nc1 b3 18. cxb3 axb3 19. a3 g6 20. Nd3 d5
21. Nxf4 exf4 22. Bxf4 Nb6 23. Be5 Bd6 24. Bxd6 Qxd6 25. exd5 Bxd5 26. Ne4 {
Sutovsky,E (2629)-Sadvakasov,D (2615)/Moscow 2007/CBM 117/1-0 (36)}) 12. Qf2
Nc4 ({RR} 12... Rb8 13. g4 Nc4 14. Bc1 O-O 15. h4 a5 16. g5 Nh5 17. Nd5 a4 18.
Nd2 Bxd5 19. exd5 Nxd2+ 20. Bxd2 b4 21. Qa7 a3 22. b3 Nf4 23. Bc4 Re8 24. Rde1
Bf8 25. Re4 f5 26. gxf6 Qxf6 27. Qa4 {Soskov,V (2278)-Taliharm,A/Viljandi 2013/
CBM 155 Extra/1/2-1/2 (31)}) 13. Bxc4 $146 ({RR} 13. Bc1 O-O 14. g4 Qb6 15. Qe1
a5 16. Nd5 Bxd5 17. exd5 a4 18. g5 axb3 19. cxb3 Qa6 20. a3 Nd7 21. bxc4 bxc4
22. Qc3 Nb6 23. h4 Rfb8 24. Ka1 Qb7 25. h5 Nxd5 26. Rxd5 Qxd5 27. Bxc4 Qb7 {
Prokopchuk,E (2489)-Khasanova,E (2029)/Ufa 1999/CBM 070 ext/0-1 (45)}) 13...
bxc4 14. Nc5 Qc7 15. N5a4 Rb8 16. g4 Nd7 17. h4 Qc6 18. g5 Rb4 19. b3 O-O 20.
Bc1 Rfb8 21. Bb2 Nf8 22. Nd5 Bxd5 23. exd5 Qd7 24. Nc3 Qf5 25. Ka1 cxb3 26.
axb3 Bd8 27. Qe2 a5 28. Ba3 Bb6 29. Bxb4 axb4 30. Na4 Bd4+ 31. Kb1 Qc8 32. Rxd4
exd4 33. Qd3 Ng6 34. Qxd4 Qf5 35. Re1 Qxf3 36. Nb6 Ne5 37. Nc4 Qg3 38. Qe4 Ra8
39. Nb6 Rb8 40. Nc4 Ra8 41. Qe3 Qxe3 42. Rxe3 Nxc4 43. bxc4 Kf8 44. Rb3 Ra4 45.
c3 bxc3 46. Rb8+ Ke7 47. Rb7+ Ke8 48. Rb8+ 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "11"]
[White "Suarez, Luis A"]
[Black "Cuartas, Carlos Enrique"]
[Result "0-1"]
[ECO "B73"]
[BlackElo "2360"]
[PlyCount "116"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Be2 Nf6 5. Nc3 O-O 6. h3 c5 7. O-O cxd4 8. Nxd4
Nc6 9. Be3 Bd7 10. Qd2 Nxd4 ({RR} 10... Re8 11. Rfe1 Rc8 12. Rad1 Ne5 13. f4
Nc6 14. Nf3 Qc7 15. a3 Red8 16. Ng5 Na5 17. Bd3 e6 18. Qf2 b6 19. e5 dxe5 20.
fxe5 Qxe5 21. Nxf7 Kxf7 22. Bd4 Qh5 23. Re5 g5 24. Rxa5 bxa5 25. Bxf6 {
Thorhallsson,G (2285)-Ernst,T (2570)/Gausdal 1992/TD/1-0 (40)}) 11. Bxd4 Qa5 ({
RR} 11... Re8 12. Rad1 a6 13. a4 Rc8 14. Qe3 Bc6 15. f3 Nd7 16. Bxg7 Kxg7 17.
b3 Qc7 18. Rf2 Qa5 19. Nd5 Bxd5 20. Rxd5 Qc3 21. Bd3 Nf6 22. Rg5 h6 23. Rg3 Nh5
24. Rg4 e5 25. Rh4 Rh8 26. g3 {Kapr,K (2069)-Radovanovic,J (2341)/Berlin 2013/
CBM 156 Extra/0-1 (34)}) 12. Rad1 e5 $146 ({RR} 12... Bc6 13. f3 Qb4 14. Bxf6
Bxf6 15. Nd5 Qxb2 16. Rb1 Qe5 17. Rb4 Bxd5 18. exd5 Rab8 19. Rfb1 b6 20. Re4
Qg5 21. f4 Qg3 22. Rb3 Qh4 23. Bg4 g5 24. g3 Qh6 25. Bf5 gxf4 26. Rxf4 Bg5 27.
Rg4 {Cebis,P-Cabart,P/Prague 2003/CBM 096 ext/1-0}) ({RR} 12... Rfe8 13. a3
Rac8 14. Qe3 Rc6 15. b4 Qd8 16. e5 dxe5 17. Bxe5 Qc8 18. Nb5 Re6 19. Nc7 Ng4
20. Bxg4 Rxe5 21. Bxd7 Qxc7 22. Qxa7 Rd8 23. Ba4 Red5 24. Rxd5 Rxd5 25. Qe3 Qd6
26. Qf3 Bd4 27. g4 {Machalova,V (2211)-Palka,M (2046)/Piestany 2005/CBM 109
ext/1-0 (36)}) 13. Be3 Bc6 14. Bg5 Rfd8 15. Kh1 Rd7 16. a3 Qb6 17. Rfe1 Nxe4
18. Nxe4 Bxe4 19. Bg4 Bf5 20. Bxf5 gxf5 21. Bh6 f6 22. Qd5+ Kh8 23. Qe6 Qc6 24.
Bxg7+ Rxg7 25. Rg1 Rf8 26. Qxd6 Qxd6 27. Rxd6 Rc7 28. c3 f4 29. Rgd1 Rff7 30.
Kg1 Kg7 31. Kf1 Kg6 32. Ke2 h5 33. Re6 h4 34. Rdd6 Rce7 35. c4 Rxe6 36. Rxe6
Rc7 37. b3 Kf7 38. Rd6 Ke7 39. Rd5 Ke6 40. Kf3 a6 41. a4 f5 42. Rd8 b5 43. axb5
axb5 44. Re8+ Kf6 45. Rf8+ Kg6 46. Rg8+ Kf7 47. Rh8 Rc5 48. Rxh4 bxc4 49. bxc4
Rxc4 50. Rh6 Rc3+ 51. Ke2 e4 52. h4 Rc2+ 53. Ke1 Rc1+ 54. Ke2 Rg1 55. Rh8 Rxg2
56. Kf1 f3 57. Rh6 f4 58. h5 Rh2 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "12"]
[White "Acosta, Alejandro"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2325"]
[BlackElo "2375"]
[PlyCount "90"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. Nc3 Be7 6. dxe5 dxe5 7. Ng5 Nh6 8.
Ne6 fxe6 9. Bxh6 O-O $146 ({RR} 9... Nb6 10. Qh5+ Kf8 11. Bb3 gxh6 12. O-O Bg5
13. h4 Bf4 14. g3 Rg8 15. Kh1 Qf6 16. gxf4 exf4 17. Rg1 Rg6 18. e5 Qf7 19. Rxg6
Qxg6 20. Qf3 Qf5 21. Re1 Nd7 22. Ne2 Nxe5 23. Qxf4 Nf3 24. Rd1 {Schut,L (2267)
-Johnsen,S (2001)/Oslo 2012/CBM 150 Extra/1-0 (49)}) ({RR} 9... Bf6 10. Qh5+
Ke7 11. Be3 Qe8 12. Qh3 Nb6 13. Bc5+ Kf7 14. Bb3 h5 15. O-O-O Nd7 16. Be3 Qe7
17. f4 exf4 18. Bxf4 Ne5 19. Rhf1 Ke8 20. Kb1 Bd7 21. Rd2 Rd8 22. Rfd1 Kf7 23.
Bxe5 Bxe5 24. Qf5+ {Maeder,K-Johannessen,S/Amsterdam 1969/MCD/1-0}) 10. Qg4 Bf6
11. O-O-O Kh8 12. Bxe6 gxh6 13. Bxd7 Bg5+ 14. Kb1 Rxf2 15. h4 Bd2 16. Bxc8 Rxc8
17. Ne2 Rc7 18. Qh5 Re7 19. Rh3 Qd6 20. Rd3 Qg6 21. Qxg6 hxg6 22. R1xd2 Rxg2
23. h5 Rf7 24. c3 Rff2 25. Rd8+ Kg7 26. R8d7+ Kg8 27. Rd8+ Kg7 28. R2d7+ Kf6
29. Rf8+ Ke6 30. Rxf2 Rxf2 31. Rd2 Rf1+ 32. Kc2 gxh5 33. Ng3 Rf4 34. Nxh5 Rxe4
35. Rg2 Rh4 36. Rg6+ Kf5 37. Rxh6 Kg5 38. Rh7 Rxh5 39. Rxb7 a5 40. Kd3 Kf6 41.
a4 Ke6 42. b4 axb4 43. cxb4 Kd6 44. a5 Rh3+ 45. Ke4 Rh4+ 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "12"]
[White "Betancourt, David"]
[Black "Gonzales, S."]
[Result "0-1"]
[ECO "D76"]
[WhiteElo "2230"]
[BlackElo "2305"]
[PlyCount "158"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. c4 d5 6. cxd5 Nxd5 7. O-O Nb6 8. a4
a5 9. Nc3 Nc6 10. Nb5 Nb4 11. e4 ({RR} 11. Bf4 N4d5 12. Bg5 c6 13. Nc3 Bg4 14.
h3 Bxf3 15. Bxf3 Nc7 16. e3 Ne6 17. Bf4 g5 18. Be5 Bxe5 19. dxe5 Nc4 20. Bg4
Qxd1 21. Raxd1 Nc5 22. e6 f5 23. Be2 Nd6 24. e4 fxe4 25. Rfe1 Rad8 {Vladimirov,
E (2598)-Ye Jiangchuan (2682)/Kuala Lumpur 1993/EXT 1998/1/2-1/2 (88)}) ({RR}
11. Bf4 N6d5 12. Rc1 c6 13. Nc3 Nxf4 14. gxf4 Qd6 15. Ne5 Rd8 16. e3 f5 17. Qe2
Be6 18. Rfd1 Bb3 19. Rd2 Qe6 20. Bf1 Bxe5 21. fxe5 Rac8 22. f4 Rc7 23. Bh3 Rcd7
24. Ne4 Qf7 25. Nc5 Rc7 {Calder,D (1946)-Evulet,G/Iasi 2013/CBM 154 Extra/1/
2-1/2 (59)}) 11... c6 12. Na3 $146 ({RR} 12. Nc3 Bg4 13. Be3 Nc4 14. Qe2 Nxe3
15. fxe3 e5 16. Rad1 exd4 17. exd4 Bxf3 18. Qxf3 Bxd4+ 19. Kh1 Qb6 20. Ne2 Rad8
21. Nxd4 Rxd4 22. Qf6 Rxd1 23. Rxd1 Qe3 24. h4 Nd3 25. Rf1 Qxg3 {0-1 (25)
Hvenekilde,J (2111)-Aabling Thomsen,J (2314)/Copenhagen 2010/CBM 137 Extra})
12... Bg4 13. Be3 e5 14. dxe5 Qxd1 15. Rfxd1 Nxa4 16. Nc4 b5 17. Rd2 Rad8 18.
Nd4 bxc4 19. Rxa4 Bxe5 20. f4 Bxd4 21. Bxd4 c5 22. Bc3 Rxd2 23. Bxd2 Rd8 24.
Bc3 Rd1+ 25. Kf2 Nd3+ 26. Ke3 Nxb2 27. Bxb2 Rd3+ 28. Kf2 Rd2+ 29. Kg1 Rxb2 30.
Rxc4 Rb5 31. Bf1 Be6 32. Ra4 Rb1 33. Kf2 Rb2+ 34. Ke3 Ra2 35. Bb5 Rxh2 36. Rxa5
Rg2 37. f5 gxf5 38. exf5 Bxf5 39. Bc4 Rxg3+ 40. Kf2 Rg5 41. Rxc5 h6 42. Rc6 Bg6
43. Rb6 Kg7 44. Kf3 Rc5 45. Bb3 Rc3+ 46. Kf4 Bh5 47. Bd5 Rc1 48. Kg3 Bg6 49.
Kh4 Rg1 50. Bb3 Bf5 51. Rb7 Bg6 52. Rb6 Rb1 53. Rb7 Rb2 54. Kg4 h5+ 55. Kg5 Rb1
56. Bd5 Rf1 57. Kh4 Kh6 58. Rb4 Rd1 59. Bf3 Rd3 60. Rf4 Rd2 61. Rb4 Rf2 62. Rb3
Rh2+ 63. Kg3 Rd2 64. Rb5 Rd4 65. Rc5 f5 66. Be2 Kg5 67. Rc4 f4+ 68. Kf2 Rxc4
69. Bxc4 Be4 70. Be6 h4 71. Bc8 Bf5 72. Bb7 Bg4 73. Be4 Kf6 74. Bb7 Ke5 75. Bc6
h3 76. Bb7 Bf5 77. Kg1 Kd4 78. Ba6 Ke3 79. Bf1 f3 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "12"]
[White "Cuartas, Carlos Enrique"]
[Black "Juan, G Arboleda"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2360"]
[BlackElo "2325"]
[PlyCount "109"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. g3 Nf6 2. Bg2 d5 3. d3 e6 4. Nf3 Nc6 5. O-O Bc5 6. d4 Be7 7. c4 O-O 8. Nc3
dxc4 9. e4 a6 10. Bg5 ({RR} 10. Qe2 Nxd4 11. Nxd4 Qxd4 12. Rd1 Qa7 13. e5 Nd7
14. Bf4 b5 15. a4 b4 16. Ne4 Rb8 17. Qh5 a5 18. h4 c5 19. Rxd7 Qxd7 20. Rd1
Qxa4 21. Nf6+ gxf6 22. exf6 Bxf6 23. Be4 Rd8 24. Rxd8+ Bxd8 {Ragger,M (2655)
-Steingrimsson,H (2562)/Germany 2012/CBM 148/1-0}) ({RR} 10. Qe2 b5 11. Rd1 Bd7
12. d5 exd5 13. e5 Re8 14. Nxd5 Nxd5 15. Rxd5 Qc8 16. Ng5 Bxg5 17. Bxg5 Rb8 18.
Rc5 Nd4 19. Qh5 Bg4 20. Qh4 h5 21. Be3 Nf3+ 22. Bxf3 Bxf3 23. Qf4 Ba8 24. f3
Rb6 {Hjelmaas,L (2270)-Vrana,J (2356)/Olomouc 2013/CBM 155 Extra/0-1}) 10...
Rb8 11. Re1 $146 ({RR} 11. e5 Nd5 12. Ne4 b5 13. Qd2 Bxg5 14. Nfxg5 h6 15. Nf3
Nce7 16. Rfc1 Bb7 17. b3 Nb6 18. Nc5 Qc8 19. Nxb7 Rxb7 20. Qa5 Rb8 21. Nd2 Nf5
22. bxc4 Nxd4 23. Kf1 c5 24. Rab1 Qc7 25. Qxa6 Ra8 {Slogar,D (2310)-Galic,K
(2230)/Medulin 1997/EXT 1999/0-1}) ({RR} 11. d5 exd5 12. exd5 Nb4 13. Ne5 Nbxd5
14. Nxd5 Nxd5 15. Bxd5 Bxg5 16. Qf3 Bf6 17. Rad1 Qe7 18. Nxf7 Be6 19. Nh6+ Kh8
20. Rfe1 Bxd5 21. Qxd5 c6 22. Qxc4 Qc7 23. Nf5 Rbd8 24. Nd4 Qa5 25. b4 Qb6 {
Pammer Zagroczky,G (1928)-Tomosvary,A (2120)/Hungary 2012/EXT 2013/1/2-1/2})
11... h6 12. Bf4 b5 13. Qd2 Kh7 14. Rad1 Bb7 15. d5 exd5 16. exd5 Nb4 17. Ne5
Bd6 18. Qd4 Kg8 19. Re2 Nd3 20. Nxd3 cxd3 21. Rxd3 Re8 22. Rxe8+ Nxe8 23. Bd2
Be7 24. Ne4 Nd6 25. Bc3 Qf8 26. Ba5 Nxe4 27. Bxe4 Bc5 28. Qc3 Re8 29. Bf3 Qd6
30. a3 Re7 31. Rd1 Rd7 32. Rc1 Bb6 33. Bb4 Qg6 34. Qe5 Rd8 35. Re1 Qg5 36. Qxg5
hxg5 37. Rd1 Rd7 38. Bc3 Kf8 39. Kf1 Ke8 40. Bxg7 f5 41. Bh5+ Kd8 42. Bf6+ Kc8
43. Bg6 Kb8 44. d6 cxd6 45. Bxf5 Rf7 46. Rxd6 Kc7 47. Bg6 Rf8 48. Re6 Bd5 49.
Be5+ Kb7 50. Rf6 Rc8 51. Bc3 g4 52. Bf5 Rg8 53. Be6 Bxe6 54. Rxe6 Bc5 55. Kg2
1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "12"]
[White "Garcia, Gildardo"]
[Black "Agudelo, Antonio"]
[Result "1-0"]
[ECO "C19"]
[WhiteElo "2430"]
[BlackElo "2305"]
[PlyCount "123"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 c5 7. a4 Nbc6 8. Nf3
Qa5 9. Qd2 Bd7 10. Bd3 c4 11. Be2 O-O-O 12. O-O f6 13. Ba3 h5 ({RR} 13... Rdg8
14. Rfe1 h5 15. Bf1 h4 16. Rab1 Nf5 17. g4 hxg3 18. fxg3 fxe5 19. Nxe5 Nfxd4
20. Bg2 Nxe5 21. Rxe5 Nc6 22. Bxd5 exd5 23. Rxd5 Ne5 24. Qg2 Qxc3 25. Rd3 cxd3
26. Qxb7+ Kd8 27. Qb8+ Bc8 28. Qd6+ {Garcia,G (2430)-Zapata,A (2500)/Columbia
1988/TD/1/2-1/2}) ({RR} 13... Be8 14. Rfb1 Bh5 15. exf6 gxf6 16. Qe3 Bf7 17.
Qf4 f5 18. Bxe7 Nxe7 19. Rb5 Qc7 20. Rc5 Nc6 21. Ne5 Be8 22. Qh6 Rd6 23. Bh5
Bxh5 24. Qxh5 b6 25. Rxc6 Rxc6 26. Nxc6 Qxc6 27. a5 b5 28. a6 {Bakunin,D (1983)
-Kamov,I (2176)/Uljanovsk 2012/EXT 2013/1-0 (34)}) 14. Nh4 $146 ({RR} 14. Rfb1
Nf5 15. Rb5 Qa6 16. Rab1 b6 17. exf6 gxf6 18. Qf4 Rdg8 19. h3 Rg7 20. Bc1 Rhg8
21. Ne1 Qxa4 22. Bf3 Ncxd4 23. cxd4 Bxb5 24. Bxd5 exd5 25. Qxf5+ Bd7 26. Qxd5
Qc6 27. Qxc6+ Bxc6 28. f3 Re8 {Basora Pascual,L (2162)-Hernandez Alfonso,F
(2162)/Spain 2003/EXT 2007/0-1 (49)}) ({RR} 14. Rfb1 Nf5 15. Bf1 Qc7 16. Re1
Rdg8 17. g3 fxe5 18. dxe5 g5 19. Nxg5 Nxe5 20. Bg2 h4 21. Qf4 hxg3 22. hxg3 Rg6
23. Qxe5 Qxe5 24. Rxe5 Rxg5 25. Bc5 b6 26. Be3 Rg6 27. Bf4 Kb7 28. a5 bxa5 {
Quinones,O (2310)-Padevsky,N (2430)/Tel Aviv 1964/MCD/0-1 (57)}) 14... Rdg8 15.
f4 Qd8 16. exf6 gxf6 17. f5 Nxf5 18. Nxf5 exf5 19. Bd6 Be6 20. Bf4 Qd7 21. a5
h4 22. h3 Bf7 23. Bf3 Bh5 24. a6 b6 25. Bh2 Bxf3 26. Rxf3 Rh7 27. Raf1 Rg5 28.
Qf4 Re7 29. Qxh4 Re2 30. R3f2 Re8 31. Bf4 Rg6 32. Qh5 Reg8 33. Re2 b5 34. Bh2
b4 35. Rxf5 Rg5 36. Rxg5 fxg5 37. cxb4 Nxd4 38. Rd2 Qe6 39. Qd1 Nc6 40. Rxd5
Rd8 41. Rxd8+ Nxd8 42. Bd6 Nf7 43. Bg3 Qxa6 44. Qd5 Nd8 45. b5 Qe6 46. Qc5+ Kd7
47. Qxa7+ Ke8 48. Qd4 g4 49. Qxg4 Qb6+ 50. Kh2 Qxb5 51. Qg6+ Kd7 52. Qd6+ Ke8
53. Bh4 Nc6 54. Qe6+ Kf8 55. Qd6+ Ke8 56. Qe6+ Kf8 57. Qd7 Qe5+ 58. Bg3 Qe4 59.
Qd6+ Kf7 60. Bf4 Nd4 61. Be5 Nxc2 62. Qf6+ 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "12"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Baquero, Luis A"]
[Result "0-1"]
[ECO "B49"]
[WhiteElo "2330"]
[BlackElo "2290"]
[PlyCount "84"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nc6 7. O-O Nf6 8.
Be3 Bb4 9. Na4 Be7 10. Nxc6 bxc6 11. Bd3 c5 12. c4 Bb7 13. Nc3 O-O 14. f4 g6
$146 ({RR} 14... d6 15. Qe1 Rfd8 16. Qg3 Nd7 17. Qh3 Nf8 18. Qg4 Bf6 19. f5 Qe7
20. Rf2 Nd7 21. Rd2 Ne5 {1/2-1/2 (20) Witkowski,S-Pojedziniec,W/Wroclaw 1960/
MCD}) ({RR} 14... d6 15. Qf3 Rad8 16. Qh3 Rfe8 17. Rae1 Nd7 18. Rf3 Nf8 19. f5
Bf6 20. fxe6 Rxe6 21. Nd5 Bxd5 22. exd5 Rxe3 23. Rfxe3 Bd4 24. Kh1 Bxe3 25.
Qxe3 Qb8 26. Qe7 Nd7 27. Bc2 Ne5 28. Ba4 Ng6 29. Qg5 {Shirov,A (2726)-Anand,V
(2784)/Wijk aan Zee 1999/CBM 069/1/2-1/2 (40)}) ({RR} 14... d6 15. Qf3 Rad8 16.
Qg3 Rfe8 17. Rad1 Nd7 18. Qh3 Nb8 19. f5 exf5 20. Qxf5 Bf6 21. e5 Rxe5 22.
Qxh7+ Kf8 23. Bf4 Qc6 24. Nd5 Rxd5 25. cxd5 Bd4+ 26. Kh1 Qxd5 27. Qh8+ Ke7 28.
Rfe1+ Kd7 29. Qh3+ {Khazieva,E (1895)-Krutko,A (2417)/Izhevsk 2010/CBM 137
Extra/1-0 (60)}) ({RR} 14... d6 15. Qf3 Rfe8 16. Qh3 d5 17. e5 Ne4 18. cxd5
exd5 19. Nxe4 dxe4 20. Bc4 Bc8 21. Qh5 Be6 22. Bxe6 fxe6 23. Qe2 Qc6 24. Rac1
Red8 25. Rc4 Qd5 26. Bc1 Rab8 27. Qxe4 Rb4 28. Qxd5 Rxd5 29. Rc2 {Stefansson,H
(2455)-Franzoni,G (2440)/Manila 1992/TD/1-0 (60)}) 15. Qf3 Ne8 16. f5 exf5 17.
Bh6 Ng7 18. Qh3 fxe4 19. Bxe4 Bxe4 20. Nxe4 f5 21. Nc3 Qd8 22. Nd5 Bf6 23. Rae1
Rf7 24. Bxg7 Bxg7 25. Re2 Qg5 26. Qf3 Rb8 27. b3 d6 28. Rfe1 Be5 29. Rxe5 dxe5
30. Rxe5 Qg4 31. Qe3 Qd4 32. Ne7+ Kf8 33. Qxd4 cxd4 34. Nc6 Re8 35. Rd5 Re2 36.
Nxd4 Rxa2 37. c5 Re7 38. Kf1 Re3 39. c6 Rc3 40. Rc5 Rxc5 41. Ne6+ Ke7 42. Nxc5
Kd6 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "12"]
[White "Velez, G."]
[Black "Suarez, Luis A"]
[Result "1-0"]
[ECO "E71"]
[PlyCount "51"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Be3 Nc6 ({RR} 6... a6 7.
Nf3 b6 8. Be2 c5 9. d5 b5 10. cxb5 axb5 11. e5 dxe5 12. Bxb5 Bb7 13. Qb3 e4 14.
Ng5 Bxd5 15. Nxd5 Nxd5 16. O-O e6 17. Rad1 Qb6 18. Nxe4 Nxe3 19. fxe3 Nc6 20.
Rd6 c4 21. Bxc4 {Azmaiparashvili,Z (2672)-Georgiev,K (2468)/Ermioni Argolidas
2005/CBM 107 ext/1-0 (56)}) 7. d5 Ne5 8. f4 ({RR} 8. Be2 c6 9. Nf3 Nxf3+ 10.
Bxf3 cxd5 11. exd5 Nd7 12. Rc1 Qa5 13. O-O Bxc3 14. Rxc3 Qxa2 15. Qc1 b5 16.
cxb5 Ne5 17. Be4 Qa4 18. Bh6 Re8 19. Re1 Bb7 20. Qe3 Rac8 21. b6 Rxc3 22. bxc3
f5 {Moreno Ruiz,J (2469)-Sanchez Jerez,E (2267)/Azuqueca de Henares 2013/CBM
156 Extra/1-0}) 8... Ned7 9. Bd3 $146 ({RR} 9. g4 c6 10. Bd3 Qa5 11. Qd2 Nc5
12. Bxc5 Qxc5 13. Nge2 cxd5 14. exd5 e6 15. f5 exd5 16. fxg6 fxg6 17. cxd5 Nxd5
18. O-O-O Be6 19. Kb1 Rac8 20. Rc1 Nb4 21. a3 Nxd3 22. Qxd3 Bc4 23. Qd2 Qb6 {
Sokolov,O-Ivanova,M/Anapa 2012/CBM 150 Extra/0-1 (38)}) 9... e6 10. Nge2 exd5
11. cxd5 Re8 12. O-O c5 13. Ng3 Nb6 14. Re1 h5 15. Qf3 h4 16. Nf1 Nh5 17. Rad1
a6 18. e5 dxe5 19. f5 Qf6 20. Bxc5 Nd7 21. Bf2 Nf8 22. Ne3 Qg5 23. d6 gxf5 24.
Bxf5 Be6 25. Ne4 Qf4 26. Qxh5 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "12"]
[White "Zapata, Alonso"]
[Black "Henao, Raul Fernando"]
[Result "1-0"]
[ECO "C88"]
[WhiteElo "2500"]
[BlackElo "2345"]
[PlyCount "83"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4
Bb7 9. d3 d6 10. Nc3 Na7 ({RR} 10... Nd4 11. Nxd4 exd4 12. Ne2 c5 13. Ng3 g6
14. c3 dxc3 15. bxc3 Re8 16. Bg5 Rc8 17. axb5 axb5 18. Qd2 d5 19. exd5 Nxd5 20.
Bxe7 Rxe7 21. Ne4 c4 22. dxc4 bxc4 23. Bc2 Re6 24. Red1 Qe7 25. Ra7 {Nisipeanu,
L (2613)-Kaidanov,G (2646)/Bled 2002/EXT 2003/1/2-1/2}) 11. Ne2 $146 ({RR} 11.
axb5 Nxb5 12. Ne2 Nd7 13. c3 Nc5 14. Bc4 Re8 15. b4 Ne6 16. Qb3 Bf6 17. h3 c6
18. Ng3 Nbc7 19. Qa2 d5 20. Bb3 Nf4 21. Qb1 Nb5 22. c4 Nc3 23. Qc2 d4 24. Bd2
a5 25. bxa5 Rxa5 {Rhee,A (2115)-Christensen,C (1793)/Ballerup 2009/CBM 130
Extra/1-0 (38)}) ({RR} 11. Bg5 c5 12. Bxf6 Bxf6 13. Nd5 Nc6 14. c3 g6 15. Nxf6+
Qxf6 16. Bd5 Qe7 17. Qc2 Qc7 18. Bxc6 Bxc6 19. a5 f5 20. b4 fxe4 21. dxe4 c4
22. Rad1 Rad8 23. Qe2 Rf4 24. Nd2 Rdf8 25. f3 Qa7+ {Petkov,H (2054)-Sagaipov,T/
Varna 2013/CBM 155 Extra/1/2-1/2 (48)}) ({RR} 11. Bg5 h6 12. Bd2 c5 13. Ne2 Re8
14. Ng3 Bf8 15. Nf5 Nc6 16. c3 Ne7 17. N3h4 d5 18. axb5 axb5 19. Rxa8 Bxa8 20.
Nxe7+ Rxe7 21. exd5 Bxd5 22. Be3 Rd7 {1/2-1/2 (22) Beckel,F (2039)-Malin,K
(1612)/Naumburg 2002/EXT 2006}) 11... Nd7 12. axb5 axb5 13. Ng3 g6 14. Bh6 Re8
15. Qd2 Nc5 16. Ba2 Bf6 17. Ng5 d5 18. f4 exf4 19. Qxf4 Qd6 20. Qf2 Nc6 21.
Bxd5 Bd4 22. Qxd4 Nxd4 23. Bxf7+ Kh8 24. Bxe8 Rxa1 25. Rxa1 Qe7 26. Rf1 Qxe8
27. Rf8+ Qxf8 28. Bxf8 Nd7 29. c3 Nb3 30. Ba3 c5 31. Ne6 Kg8 32. Kf2 Ne5 33.
Ke3 c4 34. d4 Ng4+ 35. Kf4 Nxh2 36. Nc7 Nc1 37. Nxb5 Nd3+ 38. Ke3 Ng4+ 39. Ke2
h5 40. Nd6 Bc6 41. Nxc4 Nc1+ 42. Kd2 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "13"]
[White "Agudelo, Antonio"]
[Black "Betancourt, David"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2305"]
[BlackElo "2230"]
[PlyCount "79"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 c5 2. g3 b6 3. Bg2 Bb7 4. c4 Nf6 5. O-O e6 6. Nc3 Be7 7. d4 cxd4 8. Qxd4
d6 9. Rd1 a6 10. b3 Nbd7 11. Bb2 O-O 12. e4 Qc7 13. Qe3 Rfd8 ({RR} 13... Rac8
14. Nd4 Qb8 15. Re1 Rfe8 16. h3 Bf8 17. Rad1 Ba8 18. Re2 Rc7 19. Red2 Rec8 20.
Ba1 Rc5 {1/2-1/2 (20) Petrosian,T (2645)-Andersson,U (2565)/Milan 1975/MCL}) ({
RR} 13... Rac8 14. Nd4 Rfe8 15. Rac1 Qb8 16. Re1 Bf8 17. Qd2 Nc5 18. Re2 Red8
19. f3 g6 20. Rd1 Bg7 21. Qe3 h5 22. Red2 Kh7 23. Nde2 Bh6 24. Qf2 Bxd2 25.
Rxd2 e5 26. Bh3 Rc7 27. g4 hxg4 28. Bxg4 {Dumitrache,D (2446)-Papp,G (2552)/
Baia Sprie 2012/CBM 148 Extra/0-1 (37)}) 14. Nd4 $146 ({RR} 14. Rac1 Rac8 15.
Nd4 Bf8 16. h3 Qb8 17. Re1 Ba8 18. Kh1 Nc5 19. Rcd1 Rd7 20. Re2 Re8 21. b4 e5
22. Nf5 Ne6 23. Nd5 b5 24. Nxf6+ gxf6 25. c5 Rdd8 26. cxd6 Bxd6 27. Nh6+ Kg7
28. Ng4 Be7 {Niklasch,O (2290)-Behrens,H (2285)/Germany 1994/EXT 2003/1-0 (34)}
) 14... Bf8 15. h3 Re8 16. Rac1 Rad8 17. Nde2 Qb8 18. Nf4 Qa8 19. Re1 Bc6 20.
a4 Qb8 21. b4 g6 22. Nd3 Bg7 23. Qd2 Qa8 24. Qc2 Bb7 25. Qb3 Rc8 26. Kh2 Red8
27. Re2 Nb8 28. f3 Nc6 29. Nd1 Nd7 30. Bxg7 Kxg7 31. Qb2+ e5 32. Ne3 Nd4 33.
Rf2 f6 34. Ng4 h5 35. Ne3 a5 36. Rb1 Bc6 37. h4 Rb8 38. b5 Bb7 39. Rc1 Nf8 40.
Qa3 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "13"]
[White "Baquero, Luis A"]
[Black "Cuartas, Carlos Enrique"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2290"]
[BlackElo "2360"]
[PlyCount "99"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 c5 2. Nf3 cxd4 3. Nxd4 d5 4. g3 e5 5. Nf3 Nc6 6. Bg2 Nf6 7. O-O Be7 ({RR
} 7... Bc5 8. c3 a5 9. Bg5 Be6 10. Qa4 O-O 11. Rd1 Bxf2+ 12. Kxf2 Qb6+ 13. e3
Ne4+ 14. Kf1 f6 15. Bh4 Qxb2 16. Nbd2 Nxc3 17. Qb3 Nxd1 18. Qxd1 Qb5+ 19. Kg1
e4 20. Ne1 g5 21. Nb3 gxh4 22. Nc2 {Rodrigues da Silva,E (2172)-Dumont,S (2309)
/Joao Pessoa 2013/CBM 153 Extra/0-1}) 8. c4 d4 9. b4 $146 ({RR} 9. e3 O-O 10.
exd4 exd4 11. Nbd2 Bg4 12. h3 Bh5 13. Nb3 d3 14. Bf4 Qd7 15. Re1 Rad8 16. a3
Rfe8 17. Qd2 Bxf3 18. Bxf3 Qxh3 19. Bg2 Qf5 20. Rad1 Ng4 21. Bh3 Qh5 22. Bxg4
Qxg4 23. Re3 g5 {Giorgadze,T (2505)-Ivanchuk,V (2475)/Moscow 1987/CBM 004/0-1})
({RR} 9. e3 O-O 10. exd4 exd4 11. Nbd2 Be6 12. Ne1 Qd7 13. Nd3 Bh3 14. b3 Bxg2
15. Kxg2 Rfe8 16. Bb2 Rad8 17. a3 a5 18. Qf3 Ng4 19. Rae1 Bd6 20. Ne4 Nge5 21.
Qd1 Nxd3 22. Qxd3 Qf5 23. f4 Re6 {Samulevicius,T (2140)-Brezeanu,C/Herculane
1994/TD/1/2-1/2 (31)}) 9... e4 10. Ng5 Nxb4 11. a3 Na6 12. Nxe4 O-O 13. Bb2
Nxe4 14. Bxe4 Nc5 15. Bd5 Bf6 16. Ra2 Bh3 17. Re1 Qa5 18. Qd2 Qxd2 19. Nxd2
Rad8 20. Nf3 b5 21. Bxd4 Bxd4 22. Nxd4 bxc4 23. Nc6 Rd6 24. Ne7+ Kh8 25. Bxc4
Rfd8 26. f3 R8d7 27. Rb2 g6 28. Rb5 Ne6 29. Nd5 Nd4 30. Rb8+ Kg7 31. Ne3 Re7
32. Kf2 Rc6 33. Bd3 Rc5 34. Rb4 Ne6 35. Rh4 Bf5 36. Nxf5+ gxf5 37. Rc4 Ra5 38.
Rec1 Rxa3 39. Bxf5 Kf6 40. Bxh7 a5 41. Bc2 Ra2 42. Ra4 Rb2 43. Be4 Ra7 44. h4
Rb5 45. g4 Nc5 46. Bc6 Nxa4 47. Bxb5 Nb2 48. Rb1 a4 49. Rxb2 Rb7 50. Rb1 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "13"]
[White "Gonzales, S."]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2305"]
[BlackElo "2325"]
[PlyCount "105"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Na5 4. Be2 e6 5. O-O a6 6. d4 ({RR} 6. c3 Nf6 7. e5
Nd5 8. d4 cxd4 9. cxd4 b5 10. Bg5 Qb6 11. Nc3 Bb7 12. Ne4 h6 13. Bd2 Nc4 14.
Bxc4 bxc4 15. Rc1 Nb4 16. Bxb4 Bxb4 17. Ned2 Bxd2 18. Nxd2 Bd5 19. Nxc4 Bxc4
20. Rxc4 Qxb2 {Arkhipov,S (2485)-Kozul,Z (2540)/Munich 1993/TD/1/2-1/2}) 6...
cxd4 7. Nxd4 Qc7 8. b3 ({RR} 8. a4 Nf6 9. Bf3 h6 10. Re1 e5 11. Ne2 Bc5 12. Ng3
g6 13. Be3 d6 14. Bxc5 Qxc5 15. Ra3 Be6 16. Rd3 Ke7 17. b3 Rac8 18. Re2 Qb4 19.
Nf1 Rc7 20. Qd2 Nc6 21. Rc3 Qb6 22. Ree3 Rhc8 {Kjurkchiiski,G (2267)
-Rombaldoni,A (2472)/Plovdiv 2013/CBM 152 Extra/0-1 (34)}) 8... b5 $146 ({RR}
8... Nf6 9. Bf3 d6 10. c4 Be7 11. Bb2 O-O 12. Nc3 Nc6 13. Rc1 Nxd4 14. Qxd4 Bd7
15. Rfd1 Rfd8 16. g3 Rac8 17. Kg2 Qb8 18. a4 b6 19. Qe3 Be8 20. Qd4 Bc6 21. Re1
Bf8 22. Kg1 Nd7 23. Bd1 {Bitansky,I (2165)-Soffer,R (2520)/Rishon Le Ziyyon
1997/CBM 062 ext/1/2-1/2 (43)}) ({RR} 8... Nf6 9. Qd3 b5 10. Bb2 Bd6 11. g3 Bb7
12. Nd2 O-O 13. Bf3 Rac8 14. Rac1 Bc5 15. Rfe1 Qb6 16. e5 Nd5 17. c3 b4 18. Re4
f5 19. exf6 Nxf6 20. Rh4 Bxf3 21. N2xf3 Nc6 22. Nxc6 Bxf2+ 23. Kg2 {Torotto,
A-Agardi,N (2197)/Hungary 2006/EXT 2009/1-0 (34)}) 9. Bb2 Nf6 10. Bf3 Bb7 11.
Re1 Be7 12. e5 Nd5 13. Nf5 exf5 14. Bxd5 Bxd5 15. Qxd5 O-O 16. Qd3 Rac8 17. Re2
g6 18. Nc3 Rfe8 19. Rd1 Qb8 20. Nd5 Nc6 21. Qd2 Nd8 22. Qh6 Ne6 23. Nf6+ Bxf6
24. exf6 Qf4 25. Qxf4 Nxf4 26. Rxe8+ Rxe8 27. g3 Ne6 28. Rxd7 f4 29. Kg2 Rc8
30. Ra7 h5 31. Rxa6 Rxc2 32. Be5 g5 33. gxf4 gxf4 34. a4 bxa4 35. Rxa4 Rc5 36.
Bxf4 Rb5 37. Be3 Rxb3 38. Ra5 Rb4 39. Rxh5 Nf8 40. Kg3 Re4 41. Rg5+ Ng6 42. h4
Re5 43. Bf4 Rxg5+ 44. hxg5 Nf8 45. Bd6 Ne6 46. f4 Nd4 47. Kg4 Kh7 48. f5 Nb5
49. Bc5 Nc3 50. Kf4 Kg8 51. Ke5 Kh7 52. g6+ Kg8 53. Kd6 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "13"]
[White "Henao, Raul Fernando"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2345"]
[BlackElo "2330"]
[PlyCount "55"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6 dxc6 7. O-O e5 8.
Nd2 Bc5 9. Nc4 Qc7 ({RR} 9... f6 10. Qh5+ g6 11. Qf3 b5 12. Ne3 Be6 13. a4 Rc8
14. Rd1 Qe7 15. axb5 axb5 16. c3 h5 17. b4 Bb6 18. h3 Bb3 19. Nc2 Rd8 20. Be3
Bxe3 21. Qxe3 Rh7 22. Ra6 Qe6 23. Rda1 Rb7 24. Ne1 {Ajrapetian,G (2427)
-Hayrapetian,O (2324)/Yerevan 2010/CBM 138 Extra/1/2-1/2 (32)}) ({RR} 9... f6
10. Qh5+ g6 11. Qe2 Be6 12. Kh1 g5 13. Be3 Bxe3 14. Nxe3 Qe7 15. Bc4 O-O-O 16.
a4 Nh6 17. Bxe6+ Qxe6 18. b4 Kc7 19. b5 axb5 20. axb5 Ra8 21. bxc6 bxc6 22. Ra6
Qf7 23. Rfa1 Rxa6 24. Qxa6 {Izso,D (2279)-Pataki,G (2365)/Zalakaros 2011/CBM
142 Extra/1-0}) 10. Qh5 Bd4 11. c3 g6 12. Qf3 $146 ({RR} 12. Qg5 f6 13. Qg3 Ba7
14. h4 Be6 15. Be3 b5 16. Na3 Ne7 17. Nc2 Bxe3 18. Nxe3 Rd8 19. Rfd1 O-O 20. h5
Kh8 21. Be2 Rxd1+ 22. Bxd1 gxh5 23. Bxh5 Ng6 24. Bxg6 Rg8 25. Qf3 Rxg6 26. a4
Qb7 {Sorokin,B (2135)-Masich,V/Ozery 1997/EXT 2000/1-0 (37)}) 12... Bc5 13. b4
Be7 14. Be3 b5 15. Nb6 Rb8 16. Nxc8 Rxc8 17. a4 Qb7 18. Bc2 Nf6 19. Bh6 Rg8 20.
Rfd1 c5 21. axb5 axb5 22. bxc5 Rxc5 23. Bg5 Nd7 24. Bb3 Rf8 25. Bh6 Nf6 26. Bg7
Nxe4 27. Bxf8 Bxf8 28. Ra8+ 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "13"]
[White "Juan, G Arboleda"]
[Black "Velez, G."]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "2325"]
[PlyCount "133"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nc7 7. O-O e5 8. d3
Be7 9. Be3 O-O 10. Na4 b6 ({RR} 10... Ne6 11. Rc1 Qa5 12. Nd2 Ncd4 13. Nc4
Nxe2+ 14. Qxe2 Qxa4 15. b3 Qa6 16. Nxe5 Rb8 17. f4 Rd8 18. Be4 Nf8 19. f5 Nd7
20. Nxf7 Kxf7 21. Bd5+ Kf8 22. Qh5 Ne5 23. f6 Rxd5 24. fxe7+ Kxe7 25. Bxc5+ {
Takeda,L (1966)-Junior,J (2080)/Sao Paulo 2013/CBM 152 Extra/0-1 (33)}) 11. Rc1
Bd7 12. a3 $146 ({RR} 12. b4 e4 13. Nd2 Nxb4 14. Nxe4 Nxa2 15. Ra1 Nb4 16.
Nexc5 bxc5 17. Bxa8 Nxa8 18. Qc1 Bh3 19. Rd1 Qd5 20. f3 Qe5 21. Kf2 Nd5 22.
Bxc5 Bxc5+ 23. Qxc5 Rc8 24. f4 Qe6 25. Qd4 Nab6 26. Nxb6 axb6 {Pena Gomez,M
(2352)-Schneider,I (2468)/Pardubice 2008/CBM 125 Extra/1/2-1/2 (34)}) ({RR} 12.
Nc3 Rc8 13. h4 Kh8 14. Bg5 f6 15. Bd2 Nd4 16. e3 Nxf3+ 17. Qxf3 Rb8 18. Rfd1
Be6 19. Be1 Qd7 20. Qe2 Rfd8 21. Rd2 f5 22. Rcd1 Bf6 23. f4 exf4 24. gxf4 Re8
25. e4 Bd4+ 26. Bf2 Rbd8 {Bailo Remacha,S (1991)-Gutierrez Minguenza,R (2063)/
Spain 2010/EXT 2013/0-1 (55)}) 12... Rb8 13. Nd2 f5 14. f4 Ne6 15. b4 Ncd4 16.
Bxd4 Nxd4 17. Kh1 exf4 18. gxf4 Nxe2 19. Qxe2 Bxa4 20. Nc4 Kh8 21. Ne5 Rf6 22.
Rb1 a6 23. Rfe1 Bf8 24. Qa2 Be8 25. Qc4 b5 26. Qc2 Qd4 27. Nf3 Qxf4 28. bxc5
Bc6 29. Rb4 Qc7 30. d4 Rh6 31. Ne5 Re8 32. Bxc6 Rxc6 33. Qxf5 Rf6 34. Qe4 Rfe6
35. Rb3 g6 36. Rbe3 Kg7 37. Rf3 a5 38. Ref1 Qd8 39. Qb7+ R6e7 40. Qe4 Qa8 41.
c6 Qd8 42. Rf4 Kg8 43. Qf3 a4 44. Qg2 Qd6 45. Qa2+ Qe6 46. d5 Qxe5 47. d6+ Qe6
48. Qxe6+ Rxe6 49. Rxf8+ Rxf8 50. Rxf8+ Kxf8 51. c7 Rxd6 52. c8=Q+ Ke7 53. Qb7+
Kf6 54. Qxb5 Rd4 55. Kg2 Rh4 56. Qb2+ Kf5 57. Qc2+ Kg5 58. Qd2+ Kh5 59. Qd7 Kh6
60. Qd6 Rc4 61. Qf6 Kh5 62. h3 Kh6 63. Kg3 Rg4+ 64. Kf3 Rc4 65. Qh8 Rc6 66.
Qf8+ Kh5 67. Qb4 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "13"]
[White "Mejia, Roberto"]
[Black "Zapata, Alonso"]
[Result "1/2-1/2"]
[ECO "E63"]
[BlackElo "2500"]
[PlyCount "114"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d4 Nc6 7. Nc3 a6 8. Re1
Rb8 9. a4 ({RR} 9. e4 Bg4 10. Be3 Nd7 11. Ne2 Na5 12. Rc1 c5 13. b3 Nc6 14. Qd2
e5 15. dxc5 dxc5 16. h3 Be6 17. Nc3 Nd4 18. Kh2 b5 19. cxb5 axb5 20. Nd5 Ra8
21. Red1 Re8 22. Ne1 b4 23. Nd3 Ra5 {Le Roux,J (2497)-Navrotescu,C (2444)/
Deauville 2010/CBM 134 Extra/1-0 (44)}) 9... Na5 ({RR} 9... Bf5 10. e4 Bg4 11.
h3 Bxf3 12. Bxf3 e5 13. Be3 Nd7 14. d5 Nd4 15. Bg2 c5 16. dxc6 bxc6 17. Bxd4
exd4 18. Ne2 Rxb2 19. Nxd4 Qb6 20. Ne2 Qc5 21. Rc1 Rfb8 22. Rf1 R8b3 23. Rc2
Rxc2 24. Qxc2 {Taweesupmun,C (1837)-Nguyen Thi Thanh An (2234)/Incheon 2013/
CBM 155 Extra/0-1 (34)}) 10. Qd3 c5 11. dxc5 Nb3 $146 ({RR} 11... dxc5 12. Qxd8
Rxd8 13. Bf4 Be6 14. Bxb8 Rxb8 15. Nd2 Nxc4 16. Nxc4 Bxc4 17. e4 Ng4 18. Nd1
Bd4 19. Bf3 Ne5 20. Be2 Bb3 21. Nc3 Bc2 22. Kg2 Bxc3 23. bxc3 Bxe4+ 24. f3 Bc6
25. Kf2 Kf8 26. f4 {Stegemann,N (1959)-Klein,B (1945)/Germany 2006/EXT 2006/
1-0 (68)}) 12. Rb1 Nxc5 13. Qc2 Be6 14. b3 Rc8 15. Bg5 h6 16. Bxf6 Bxf6 17. e4
Bg7 18. Qd2 a5 19. Nd4 Bd7 20. Nd5 Bc6 21. Nb5 Kh7 22. Qc2 Ne6 23. Rbd1 Bxb5
24. axb5 Nd4 25. Qd3 e6 26. Ne3 Qb6 27. Kh1 Rc7 28. f4 Qc5 29. Nc2 Nxc2 30.
Qxc2 Bd4 31. Qd2 e5 32. Qxa5 b6 33. Qd2 Ra8 34. b4 Qxc4 35. Rc1 Bc3 36. Qxd6
Rac8 37. Bh3 Bxb4 38. Rxc4 Bxd6 39. Rxc7 Rxc7 40. Rd1 Ba3 41. fxe5 Re7 42. Bd7
Rxe5 43. Bc6 Re6 44. Rd7 Kg8 45. Bd5 Rf6 46. e5 Rf2 47. e6 fxe6 48. Bxe6+ Kf8
49. Bd5 Bc5 50. Bc6 g5 51. h3 Kg8 52. g4 Kf8 53. Bd5 Rd2 54. Bc6 Re2 55. Rh7
Re6 56. Kg2 Be7 57. Kf3 Rf6+ 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "13"]
[White "Suarez, Luis A"]
[Black "Garcia, Gildardo"]
[Result "0-1"]
[ECO "C81"]
[BlackElo "2430"]
[PlyCount "84"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5
Be6 9. Qe2 Be7 10. Rd1 O-O 11. c4 bxc4 12. Bxc4 Bc5 13. Be3 Bxe3 14. Qxe3 Qb8
15. Bb3 Na5 16. Nbd2 Nxd2 17. Nxd2 c5 18. Qxc5 Nxb3 19. Nxb3 Qxe5 20. Qd4 Qg5
$146 ({RR} 20... Qxd4 21. Nxd4 Rab8 22. b3 Rfc8 23. Rac1 Kf8 24. Re1 Bd7 25. h3
f6 26. f4 Kf7 27. Kf2 g6 28. Rxc8 Rxc8 29. Re2 Rc3 30. Rd2 Be6 31. Rc2 Rxc2+
32. Nxc2 Ke7 33. Nb4 a5 34. Nc6+ Kd6 35. Nxa5 {Kaiser,M (2181)-Brameyer,H
(2231)/Germany 2009/EXT 2011/0-1 (42)}) 21. Rd3 g6 22. Re1 Bf5 23. h4 Qd8 24.
Rde3 Rc8 25. Nc5 h5 26. b4 Qb6 27. Re5 a5 28. a3 axb4 29. axb4 Rfd8 30. R1e3
Qc6 31. b5 Qb6 32. Ne6 Qxd4 33. Nxd4 Rc1+ 34. Kh2 Rb1 35. Nc6 Rd6 36. Ne7+ Kg7
37. Nxf5+ gxf5 38. Rxf5 d4 39. Rd3 Rc1 40. Rg5+ Kf6 41. Rxh5 Rc3 42. Kg3 Rxd3+
0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "14"]
[White "Acosta, Alejandro"]
[Black "Agudelo, Antonio"]
[Result "0-1"]
[ECO "C05"]
[WhiteElo "2325"]
[BlackElo "2305"]
[PlyCount "66"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ndf3 cxd4 8. cxd4
Qa5+ 9. Kf2 f6 10. Bd3 Qb6 11. Kg3 Be7 12. h4 a5 $146 ({RR} 12... Nf8 13. Ne2
Bd7 14. Nc3 Nd8 15. h5 f5 16. Rb1 Nf7 17. Be3 Rg8 18. Kf2 g5 19. hxg6 hxg6 20.
Qd2 O-O-O 21. g3 Kb8 22. Kg2 Rc8 23. Ng5 Nxg5 24. fxg5 Rg7 25. Rh4 a6 26. Rbh1
Bb5 27. Nxb5 {Brunner,L (2480)-Caruso,D/Bern 1994/TD/1-0 (35)}) 13. Ne2 a4 14.
a3 Qa7 15. Rb1 f5 16. Be3 Nb6 17. Kh3 Bd7 18. g4 fxg4+ 19. Kxg4 Na5 20. Ng3
Nbc4 21. Bf2 O-O-O 22. Qe2 Kb8 23. h5 Qb6 24. Nf1 Rc8 25. Ne3 h6 26. Rhc1 Bb5
27. Rc3 Qa6 28. Rbc1 Rc7 29. Nd2 Nxe5+ 30. fxe5 Bxd3 31. Qe1 Rxc3 32. Rxc3 Be2+
33. Kg3 Bxh5 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "14"]
[White "Betancourt, David"]
[Black "Suarez, Luis A"]
[Result "1-0"]
[ECO "E83"]
[WhiteElo "2230"]
[PlyCount "67"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 Nc6 7. Qd2 e5 8. d5 Nd4
9. Nge2 c5 10. dxc6 Nxc6 11. O-O-O Be6 ({RR} 11... Qa5 12. Kb1 Be6 13. Nd5 Bxd5
14. cxd5 Qxd2 15. Rxd2 Ne7 16. Rc2 Rac8 17. Nc3 a6 18. Be2 Nh5 19. Rhc1 f5 20.
Na4 Rxc2 21. Rxc2 Rc8 22. Nb6 Rxc2 23. Kxc2 Nf4 24. Bf1 Bf8 25. a4 Kf7 26. b4 {
Shigalugov,L-Basiev,V (2042)/Nalchik 2013/CBM 153 Extra/1-0 (36)}) 12. Nd5 Rc8
13. Kb1 Re8 14. h4 $146 ({RR} 14. g4 Nd7 15. h4 Nc5 16. h5 Na5 17. Nec3 Nd7 18.
hxg6 hxg6 19. Bh6 Bh8 20. Bg5 f6 21. Qh2 Bg7 22. Bh6 Bh8 23. Bf8 Nxf8 24. Qxh8+
Kf7 25. Be2 Nxc4 26. Bxc4 Rxc4 27. Rh6 Bxd5 28. Nxd5 Ke6 {Vass,D (2000)
-Kosztolanczi,G (2171)/Balatonalmadi 2009/EXT 2011/1-0 (33)}) 14... Bxd5 15.
cxd5 Ne7 16. h5 Nxh5 17. g4 Nf4 18. Nxf4 exf4 19. Bxf4 Qd7 20. Qh2 Qa4 21. Bd3
Qb4 22. Bxd6 Qb6 23. Bf4 Red8 24. Rd2 Kf8 25. Bh6 Ng8 26. Bxg7+ Kxg7 27. Qxh7+
Kf8 28. Qh2 Rc5 29. g5 Rdc8 30. Bc2 a5 31. Bb3 Qd8 32. Qe5 b5 33. Rdh2 a4 34.
Bc2 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "14"]
[White "Cuartas, Carlos Enrique"]
[Black "Henao, Raul Fernando"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2360"]
[BlackElo "2345"]
[PlyCount "154"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. g3 Nf6 2. Bg2 g6 3. e4 d6 4. d4 Bg7 5. Nc3 O-O 6. Nge2 Nbd7 7. O-O c5 8. h3
Rb8 9. a4 a6 10. Be3 ({RR} 10. a5 b6 11. axb6 Rxb6 12. Na4 Rb5 13. Be3 Bb7 14.
e5 Nd5 15. Bg5 dxe5 16. dxc5 Nb4 17. Nec3 Bxg2 18. Kxg2 h6 19. Nxb5 axb5 20.
Nb6 Nxb6 21. Qxd8 Rxd8 22. cxb6 hxg5 23. b7 Nc6 24. Ra8 Nb8 {Shchukin,D (2333)
-Shpartko,G (2165)/St Petersburg 2013/CBM 152 Extra/1-0}) 10... cxd4 ({RR}
10... b6 11. Qd2 Re8 12. Bh6 Bh8 13. f4 cxd4 14. Nxd4 Bb7 15. Rae1 Qc7 16. Kh2
Rbd8 17. Nf3 Nc5 18. Ng5 Bc6 19. b3 Bg7 20. Bxg7 Kxg7 21. Nd5 Bxd5 22. exd5 h6
23. Ne4 Ncxe4 24. Bxe4 b5 25. axb5 {De la Villa Garcia,J (2495)-Gulko,B (2615)/
Pamplona 1996/CBM 057/0-1 (71)}) 11. Nxd4 Ne5 $146 ({RR} 11... Qc7 12. Qd2 Ne5
13. b3 Bd7 14. Nd5 Nxd5 15. exd5 Be8 16. Rae1 Rc8 17. c4 Bxa4 18. bxa4 Qxc4 19.
a5 Qc7 20. Rc1 Qd7 21. Qe2 Qa4 22. Ra1 Qc4 23. Rab1 Qc7 24. Rfc1 Qxa5 25. Rxc8
Rxc8 26. Rxb7 {Kranzl,P (2268)-Jurasin,M (2164)/Boeblingen 2000/CBM 079 ext/1-0
}) 12. Kh2 Bd7 13. Qe2 Rc8 14. Rfd1 Nc4 15. Bc1 Qa5 16. Nb3 Qc7 17. Ra2 Na5 18.
Nxa5 Qxa5 19. e5 dxe5 20. Bxb7 Rb8 21. Qxa6 Qc5 22. Be3 Qc7 23. Bd5 e4 24. Bf4
Qc5 25. Qe2 Rxb2 26. Rxb2 Qxc3 27. Rb3 Qa5 28. Bxe4 Bxh3 29. Bd2 Qxa4 30. Rb4
Qd7 31. Bg5 Ng4+ 32. Kg1 Qe6 33. Bf3 Ne5 34. Bd5 Bg4 35. Qe3 Qf5 36. Rdb1 Bf3
37. Rf4 Qxg5 38. Bxf3 Bh6 39. Be2 Nd7 40. Re4 Qxe3 41. fxe3 e6 42. Kf2 Rc8 43.
Rd4 Nc5 44. Rc4 Rc7 45. Bf3 Bf8 46. Rb5 Kg7 47. Ke2 h5 48. g4 hxg4 49. Bxg4 f5
50. Bf3 Kf6 51. Rb6 Ra7 52. Rc6 Ra5 53. Rb6 Ra7 54. Rb8 Be7 55. Re8 Ra5 56. Bc6
g5 57. Ra8 Rxa8 58. Bxa8 g4 59. Rb4 e5 60. Bd5 Bd6 61. Rb6 Ke7 62. Rb1 Kf6 63.
Rh1 Kg5 64. Rh8 f4 65. Rg8+ Kf5 66. Kf2 Be7 67. Rh8 Bd6 68. Rh6 Be7 69. Rh7 Bd6
70. Bc6 Ne4+ 71. Bxe4+ Kxe4 72. exf4 exf4 73. Rh6 g3+ 74. Kf1 Be5 75. Rg6 f3
76. c4 g2+ 77. Rxg2 fxg2+ 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "14"]
[White "Garcia, Gildardo"]
[Black "Juan, G Arboleda"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2430"]
[BlackElo "2325"]
[PlyCount "153"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4
Bc5 9. Qd2 Bxd4 10. Bxd4 Nxd4 11. Qxd4 Qb6 12. Qxb6 Nxb6 13. Nb5 Ke7 14. Kd2 ({
RR} 14. b3 Bd7 15. Nd4 a6 16. Bd3 g6 17. Kd2 h5 18. g3 Rac8 19. a4 Be8 20. a5
Nd7 21. b4 Nb8 22. b5 Bxb5 23. Bxb5 axb5 24. Nxb5 Na6 25. Nd6 Rc7 26. Rhb1 Nc5
27. Rb5 Ne4+ 28. Nxe4 dxe4 {Timman,J (2680)-Gurevich,M (2645)/Rotterdam 1990/
CBM 018/1/2-1/2 (56)}) 14... a6 $146 ({RR} 14... Bd7 15. Nd4 Na4 16. Rb1 Nc5
17. Bd3 Nxd3 18. cxd3 f5 19. Ke3 h6 20. Rbg1 h5 21. Rc1 Rac8 22. Kf2 a6 23. Kg3
Bb5 24. Rxc8 Rxc8 25. Rd1 Ba4 26. b3 Be8 27. Kh4 a5 28. Kg5 Rc3 29. a4 {Kamsky,
G (2717)-Privman,B (2241)/New York 2004/CBM 100 ext/1-0 (43)}) ({RR} 14... Bd7
15. Nd4 h6 16. b3 f6 17. Re1 f5 18. Bd3 g5 19. g4 fxg4 20. f5 Raf8 21. Rhf1
exf5 22. e6 Be8 23. Nxf5+ Rxf5 24. Rxf5 Rf8 25. Rxf8 Kxf8 26. e7+ Kf7 27. Bf5
h5 28. Kd3 {1-0 (28) De Rover,Y (2287)-Straat,E (2091)/Amsterdam 2012/CBM 149
Extra}) ({RR} 14... Bd7 15. Nd4 Na4 16. b3 Nc5 17. Bd3 g6 18. a4 a5 19. Raf1 h5
20. g3 Rag8 21. h4 Rc8 22. Ra1 Rc7 23. Rhb1 Ra8 24. Ra3 Be8 25. c3 Bd7 26. Bc2
Rcc8 27. Rba1 Na6 28. Nb5 b6 29. Nd6 {Ehlvest,J (2650)-Gurevich,M (2650)/
Linares 1991/CBM 022/1/2-1/2 (49)}) 15. Nd4 Bd7 16. Bd3 Nc4+ 17. Bxc4 dxc4 18.
g4 h5 19. h3 Rac8 20. Rag1 g6 21. Ke3 Rc5 22. h4 hxg4 23. Rxg4 b6 24. a3 Bc8
25. Rg5 Bb7 26. Rh2 Rcc8 27. h5 Rxh5 28. Rhxh5 gxh5 29. Rxh5 Rg8 30. f5 exf5
31. Nxf5+ Kd7 32. Rh7 Bd5 33. Nh6 Rf8 34. Kd4 Be6 35. Rg7 Kc6 36. Rg8 Rxg8 37.
Nxg8 b5 38. Ne7+ Kd7 39. Nd5 Kc6 40. Nb4+ Kb6 41. c3 a5 42. Nd5+ Kc6 43. Ne3
Kb6 44. a4 Kc6 45. Nc2 bxa4 46. Na3 Kb6 47. Nxc4+ Kb5 48. Nd6+ Kc6 49. Ne4 Kb5
50. Nd6+ Kc6 51. Nc4 Kb5 52. Na3+ Kc6 53. c4 Bf5 54. Nb5 Bc2 55. Nc3 Bb3 56.
Nd5 Bd1 57. Ne3 Bb3 58. Nf5 Bd1 59. Nh6 Bh5 60. Nf5 Bd1 61. Nd6 f6 62. Nf7
fxe5+ 63. Nxe5+ Kd6 64. c5+ Kc7 65. Nc4 Kc6 66. Nxa5+ Kb5 67. Nc4 Bf3 68. Nb6
Kb4 69. Nd5+ Bxd5 70. Kxd5 Kb3 71. c6 Kxb2 72. c7 a3 73. c8=Q a2 74. Qh8+ Kb1
75. Qh1+ Kb2 76. Qg2+ Kb1 77. Kc4 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "14"]
[White "Gonzalez Rodriguez, Jorge Armando"]
[Black "Gonzales, S."]
[Result "0-1"]
[ECO "D76"]
[WhiteElo "2375"]
[BlackElo "2305"]
[PlyCount "92"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d5 6. cxd5 Nxd5 7. d4 Nb6 8. e4
Nc6 9. d5 Na5 10. Nc3 c6 11. Nd4 e6 12. Nb3 Nbc4 $146 ({RR} 12... Nac4 13. dxc6
bxc6 14. Qc2 a5 15. Rd1 Qe7 16. Nd4 Bb7 17. b3 Rfd8 18. Nde2 Rxd1+ 19. Qxd1 Rd8
20. Qc2 Na3 21. Bxa3 Qxa3 22. Rd1 Rxd1+ 23. Qxd1 Qe7 24. Qd3 h5 25. f4 e5 26.
h3 Qc5+ 27. Kh2 {Vincent,S (2235)-Roos,D (2408)/France 2008/CBM 123 Extra/1-0
(58)}) ({RR} 12... Nac4 13. dxc6 bxc6 14. Qc2 a5 15. a4 Qe7 16. Nd2 Ba6 17.
Nxc4 Nxc4 18. b3 Qf6 19. bxc4 Qxc3 20. Qxc3 Bxc3 21. Bh6 Bxa1 22. Bxf8 Kxf8 23.
Rxa1 c5 24. e5 Rb8 25. Bc6 Bxc4 26. Rc1 Bb3 27. Bb5 {Wohl,A (2441)-Ni Hua
(2667)/Olongapo City 2010/CBM 136 Extra/0-1 (40)}) ({RR} 12... Nxb3 13. Qxb3
exd5 14. exd5 cxd5 15. Nxd5 Be6 16. Rd1 Bg4 17. Re1 Be6 18. Rd1 Rc8 19. Be3 Nc4
20. Bd4 Bg4 21. f3 Be6 22. f4 Na5 23. Qf3 Bxd4+ 24. Rxd4 Rc2 25. Rad1 Bxd5 26.
Rxd5 Qb6+ 27. Kh1 {Fernandez Cazorla,A (2207)-Martinez Ramirez,E (2302)/
Catalunya 2013/CBM 152 Extra/1/2-1/2 (80)}) ({RR} 12... Nxb3 13. Qxb3 exd5 14.
exd5 cxd5 15. Nxd5 Be6 16. Rd1 Nxd5 17. Bxd5 Bxd5 18. Rxd5 Qf6 19. Bg5 Qe6 20.
Rad1 Bf6 21. Be3 b6 22. Qa3 Rfd8 23. Rxd8+ Bxd8 24. Qa6 Bf6 25. b3 Qe4 26. Rc1
Kg7 27. Rc4 {Pelts,R (2450)-Allen,K/Thessaloniki 1988/TD/1-0 (41)}) 13. h4 exd5
14. exd5 Bf5 15. Nxa5 Qxa5 16. Qb3 Ne5 17. dxc6 bxc6 18. Qa4 Qb6 19. b3 Ng4 20.
Bb2 Rad8 21. Rad1 Bxc3 22. Rxd8 Bxb2 23. Rxf8+ Kxf8 24. Qxc6 Bd4 25. Qxb6 Bxb6
26. Bf3 h5 27. Kg2 Be6 28. Be2 Ke7 29. Bc4 Bxc4 30. bxc4 Ne5 31. Re1 Kd6 32.
Rd1+ Kc6 33. Re1 Nxc4 34. Re7 Nd6 35. f3 a5 36. Kh3 Bd8 37. Ra7 Bc7 38. Ra8 Kd7
39. Rh8 Ne8 40. g4 Be5 41. Rg8 Bg7 42. g5 Be5 43. Kg2 Bc7 44. Kh3 Nd6 45. Ra8
Nc8 46. f4 Bb6 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "14"]
[White "Gutierrez Castillo, Jose Antonio"]
[Black "Mejia, Roberto"]
[Result "1-0"]
[ECO "B41"]
[WhiteElo "2330"]
[PlyCount "111"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 e6 7. Be2 Be7 8. O-O
O-O 9. Be3 Qc7 10. Rc1 b6 11. a3 ({RR} 11. b4 Bb7 12. f3 Nbd7 13. Nb3 Rac8 14.
Kh1 Qb8 15. Qd4 Bd8 16. Bg1 Re8 17. Rfd1 d5 18. exd5 exd5 19. c5 bxc5 20. bxc5
Nh5 21. Bd3 Re5 22. f4 Re7 23. Nxd5 Bxd5 24. Qxd5 Nxf4 25. Qd6 Nxd3 {Liang
Jinrong (2490)-Wang Rui (2526)/HeiBei 2001/EXT 2002/1-0 (40)}) ({RR} 11. Qd2
Bb7 12. f3 Nbd7 13. b4 Rac8 14. Rc2 Qb8 15. Rb1 Ne5 16. Na4 Nfd7 17. Qc1 Nc6
18. Kh1 Bf6 19. Qd2 Nxd4 20. Bxd4 Bxd4 21. Qxd4 b5 22. Nc3 bxc4 23. Bxc4 Ne5
24. Bf1 Rc6 25. b5 axb5 {Zajic,M (2272)-Zarkovic,M (2070)/Paracin 2013/CBM 155
Extra/1/2-1/2 (75)}) 11... Bb7 12. f3 Nbd7 13. b4 Rab8 $146 ({RR} 13... Rac8
14. Qd2 Qb8 15. Nb3 Bd8 16. Kh1 Bc7 17. Bg1 Qa8 18. a4 Ne5 19. Rc2 Kh8 20. Ra1
Rg8 21. a5 bxa5 22. b5 d5 23. cxd5 exd5 24. bxa6 Bxa6 25. Bxa6 Qxa6 26. Nxd5
Nxd5 27. exd5 Qb5 28. Nc5 {Solic,K (2255)-Kursova,M (2315)/Porto Carras 2011/
EXT 2012/1/2-1/2 (33)}) 14. Qb3 Rfc8 15. Rfd1 Bf8 16. Na4 g6 17. Qd3 h6 18. Qd2
Kh7 19. Bf1 Ne5 20. Nxb6 Rd8 21. Na4 Qe7 22. Qe1 Nh5 23. c5 Qe8 24. b5 dxc5 25.
Nxc5 axb5 26. Bxb5 Qe7 27. Nxb7 Rxb7 28. a4 g5 29. Nc6 Rxd1 30. Qxd1 Qa3 31.
Bf2 Rd7 32. Qc2 Nxc6 33. Bxc6 Rc7 34. Qc3 Nf4 35. Qxa3 Bxa3 36. Rc2 Nd3 37. Bb6
Rc8 38. Rc3 Bc5+ 39. Bxc5 Rxc6 40. Rxd3 Rxc5 41. Ra3 Ra5 42. Kf2 Kg6 43. Ke3
Kf6 44. Kd4 Ke7 45. Kc4 Ra8 46. Kc5 Kd7 47. a5 Rc8+ 48. Kd4 Kd6 49. e5+ Kd7 50.
a6 Ra8 51. a7 Kc6 52. f4 gxf4 53. Ke4 Kb6 54. Kxf4 Rxa7 55. Rxa7 Kxa7 56. h4
1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "14"]
[White "Velez, G."]
[Black "Baquero, Luis A"]
[Result "0-1"]
[ECO "E41"]
[BlackElo "2290"]
[PlyCount "114"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. g3 $146 ({RR} 5. d5 Ne4 6. Bd2 Nxd2
7. Qxd2 Qf6 8. Rc1 e5 9. e4 d6 10. Be2 Qg6 11. Bf3 f5 12. Nge2 O-O 13. O-O f4
14. Kh1 Nd7 15. Rb1 Nf6 16. a3 Bxc3 17. Nxc3 b6 18. Qe2 Bd7 19. Rfc1 Qh6 {
Drescher,U (1920)-Knoetzsch,H (1810)/Bayern 1996/EXT 1999/0-1 (51)}) ({RR} 5.
d5 Ne4 6. Bd2 Bxc3 7. Bxc3 Nxc3 8. bxc3 O-O 9. Bd3 d6 10. Qc2 h6 11. Ne2 exd5
12. cxd5 Qg5 13. c4 Nd7 14. O-O Qe7 15. Ng3 Ne5 16. Be2 f5 17. Qd2 Qh4 18. f4
Ng4 19. Bxg4 Qxg4 {Ulko,J (2397)-Arbakov,V (2482)/Moscow 1999/CBM 070/1-0 (34)}
) ({RR} 5. d5 Ne4 6. Nge2 Qf6 7. f3 Nxc3 8. Nxc3 exd5 9. cxd5 O-O 10. Qc2 d6
11. Bd3 Qh4+ 12. Qf2 Qe7 13. O-O Nd7 14. Rd1 a6 15. Qc2 Nf6 16. Ne2 b5 17. b3
h6 18. e4 Nd7 19. Nf4 Ne5 {Loreth,W (1803)-Borsos,B (2298)/Braunau 2013/CBM
156 Extra/0-1 (40)}) ({RR} 5. d5 O-O 6. Bd2 d6 7. Bd3 exd5 8. Nxd5 Nxd5 9. cxd5
Qg5 10. Ne2 Qxg2 11. Rg1 Qxh2 12. Qc2 Nd7 13. O-O-O Bxd2+ 14. Qxd2 h6 15. Nf4
Qh4 16. Rh1 Qe7 17. Rdg1 Ne5 18. Rxh6 f5 19. Ng6 Nxg6 {Ulko,J (2397)-Tunik,G
(2474)/Korolev 1999/EXT 2001/1-0 (31)}) 5... O-O 6. Bg2 cxd4 7. exd4 d5 8. cxd5
Bxc3+ 9. bxc3 exd5 10. Ne2 h6 11. O-O Nc6 12. Re1 Re8 13. Nf4 Rxe1+ 14. Qxe1
Bf5 15. Qe2 Qd7 16. a4 Na5 17. Be3 a6 18. Qa2 Rd8 19. f3 Re8 20. Bf2 g5 21. Ne2
Qe6 22. Re1 Qc6 23. g4 Bg6 24. h4 Qc4 25. Qxc4 Nxc4 26. f4 Be4 27. fxg5 hxg5
28. hxg5 Bxg2 29. gxf6 Bf3 30. Nf4 Rxe1+ 31. Bxe1 Nb6 32. g5 Nxa4 33. Nd3 Be4
34. Ne5 Nb2 35. Bd2 b5 36. Bc1 Nd1 37. Bd2 a5 38. c4 dxc4 39. Bxa5 c3 40. Kf1
c2 41. Bd2 Nc3 42. Kf2 Na2 43. Ke3 Bd5 44. Nd3 b4 45. Kf4 b3 46. Ke5 Bf3 47.
Nb2 c1=Q 48. Bxc1 Nxc1 49. d5 Bg2 50. d6 Bh3 51. Kd4 Kh7 52. Kc3 Kg6 53. Na4
Kxg5 54. Nc5 Kxf6 55. Kd2 b2 56. Kc2 Nd3 57. Nxd3 Bf5 0-1

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "15"]
[White "Agudelo, Antonio"]
[Black "Gonzalez Rodriguez, Jorge Armando"]
[Result "1-0"]
[ECO "E67"]
[WhiteElo "2305"]
[BlackElo "2375"]
[PlyCount "39"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. b3 O-O 5. Bb2 d6 6. d4 c6 7. O-O Nbd7 8. c4
a5 9. Nc3 ({RR} 9. Qc2 Re8 10. Rd1 Qc7 11. Nbd2 e5 12. e3 exd4 13. Nxd4 Nc5 14.
a3 Qe7 15. b4 Nce4 16. Nxe4 Nxe4 17. Nb3 Bxb2 18. Qxb2 axb4 19. axb4 Bf5 20. h4
h6 21. Rxa8 Rxa8 22. b5 Qe5 23. Qxe5 dxe5 {Hansen,C (2610)-Van Wely,L (2560)/
Wijk aan Zee 1993/CBM 034/1/2-1/2 (36)}) 9... e5 10. Rc1 $146 ({RR} 10. dxe5
dxe5 11. Ba3 Re8 12. e4 Bf8 13. Bxf8 Kxf8 14. Qd6+ Qe7 15. Rad1 Nc5 16. Qxe7+
Rxe7 17. Rd8+ Ne8 18. Rfd1 Ne6 19. R8d2 N6c7 20. Na4 Bg4 21. Nb6 Ra6 22. Nd7+
Bxd7 23. Rxd7 f6 24. Bh3 Rxd7 {Kharashuta,E (2211)-Malyshev,V (2367)/
Novosibirsk 2007/CBM 119 ext/1-0 (59)}) ({RR} 10. e3 Re8 11. h3 exd4 12. Nxd4
Nc5 13. Qc2 Qe7 14. Kh2 h5 15. Rae1 Bd7 16. Nce2 Nce4 17. Nf4 g5 18. Nd3 c5 19.
Ne2 h4 20. g4 d5 21. f3 dxc4 22. bxc4 Nd6 23. e4 b5 24. cxb5 Bxb5 {Kovar,V
(2308)-Meduna,E (2420)/Czechia 2012/EXT 2013/1-0 (32)}) ({RR} 10. dxe5 dxe5 11.
e4 Re8 12. Bh3 Nc5 13. Qxd8 Rxd8 14. Bxc8 Raxc8 15. Rad1 Nfxe4 16. Nxe4 Nxe4
17. Rde1 f5 18. Re2 Rd3 19. Kg2 Re8 20. Rfe1 b5 21. cxb5 cxb5 22. Bxe5 Bxe5 23.
Nxe5 Rxe5 24. f3 Kf7 {Haugli,P (2260)-Helmers,K (2415)/Kirkenes 1981/MCD/0-1
(42)}) 10... Re8 11. e3 Qe7 12. Ba3 exd4 13. exd4 Nf8 14. d5 c5 15. Re1 Qd8 16.
Qd2 Bf5 17. Nb5 h5 18. Qf4 Rxe1+ 19. Rxe1 Ne8 20. Rxe8 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "15"]
[White "Baquero, Luis A"]
[Black "Garcia, Gildardo"]
[Result "1/2-1/2"]
[ECO "A71"]
[WhiteElo "2290"]
[BlackElo "2430"]
[PlyCount "127"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. d4 c5 2. d5 e6 3. c4 Nf6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Bg5 Bg7 8. e4
O-O 9. Nd2 Re8 10. Be2 a6 11. a4 Nbd7 12. O-O Rb8 13. Ra3 $146 ({RR} 13. Bh4
Qc7 14. h3 c4 15. Bxc4 Nc5 16. Re1 Bd7 17. Qf3 Nh5 18. Bf1 Bh6 19. Qd1 b5 20.
axb5 axb5 21. Nb3 Na4 22. Nxb5 Bxb5 23. Bxb5 Nxb2 24. Qe2 Nf4 25. Qf1 g5 26.
Bg3 Re5 27. Nd4 Qc5 {Kavalek,L (2540)-Ljubojevic,L (2620)/Manila 1976/IZT/1-0
(38)}) ({RR} 13. f4 Qe7 14. Kh1 h6 15. Bh4 Qf8 16. Bg3 Nh7 17. Qc2 f5 18. Bd3
Nhf6 19. h3 b5 20. axb5 axb5 21. Bxb5 Nxe4 22. Ndxe4 fxe4 23. Qe2 Qf5 24. Ra7
Rb7 25. Ra8 Rf8 26. Bc6 Rb4 27. Be1 Nb6 {Plaksin,V (2201)-Kostromin,M (2371)/
Alushta 2010/CBM 136 Extra/0-1 (71)}) ({RR} 13. Qc2 Qc7 14. Kh1 c4 15. Bxc4 b5
16. axb5 axb5 17. Bd3 Ne5 18. Nd1 Qxc2 19. Bxc2 Bd7 20. Ra7 Rec8 21. f4 Neg4
22. Bb3 Ra8 23. Rb7 Be8 24. h3 Nh6 25. Rb6 Nh5 26. Kh2 f6 27. Bxh6 Bxh6 {
Ojanen,K-Kraidman,Y/Havana 1966/MCD/1-0 (46)}) 13... Qc7 14. Kh1 Ne5 15. h3 h6
16. Bh4 g5 17. Bg3 Ng6 18. f4 gxf4 19. Bxf4 Nxf4 20. Rxf4 Qe7 21. Qf1 Bd7 22.
Rf2 Rf8 23. Rb3 b5 24. axb5 c4 25. Bxc4 Nh5 26. Ne2 axb5 27. Bd3 f5 28. Bb1
fxe4 29. Nxe4 Rxf2 30. Qxf2 Qe5 31. N2g3 Rf8 32. Rf3 Nxg3+ 33. Qxg3 Rxf3 34.
Qxf3 Qxb2 35. Bd3 Be5 36. Ng3 Qc1+ 37. Nf1 Qf4 38. Qxf4 Bxf4 39. g3 Bc1 40. Kg2
Kg7 41. Kf3 Kf6 42. Ke4 Bf5+ 43. Kd4 Bb2+ 44. Ke3 Bc1+ 45. Kd4 Bxd3 46. Kxd3
Ke5 47. Kc2 Bg5 48. h4 Bf6 49. Kd3 Kxd5 50. Ne3+ Ke6 51. g4 Ke5 52. Nf5 Bxh4
53. Nxh4 Kf4 54. Nf5 h5 55. Nxd6 h4 56. Ke2 b4 57. Kf2 Kxg4 58. Nc4 h3 59. Ne3+
Kh4 60. Kf3 b3 61. Nc4 h2 62. Kg2 b2 63. Nd2 b1=Q 64. Nxb1 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "15"]
[White "Henao, Raul Fernando"]
[Black "Velez, G."]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2345"]
[PlyCount "65"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. O-O Nbd7 8. f4
b5 9. Bf3 Bb7 10. Qe2 b4 ({RR} 10... Qc7 11. a3 Rc8 12. Kh1 Be7 13. Bd2 O-O 14.
Rae1 Nb6 15. e5 dxe5 16. fxe5 Nfd7 17. Bxb7 Qxb7 18. Qg4 Rfe8 19. Bh6 Bf8 20.
Ne4 Nxe5 21. Nf6+ Kh8 22. Bxg7+ Bxg7 23. Qh4 h6 24. Rxe5 Nd5 25. Nxe8 {
Powierski,E (2160)-Mertens,P (1979)/Hannover 2012/CBM 150 Extra/1-0 (45)}) ({RR
} 10... Qc7 11. Kh1 Rc8 12. e5 Bxf3 13. Nxf3 dxe5 14. fxe5 Ng4 15. Ng5 Nh6 16.
Nge4 b4 17. Bxh6 gxh6 18. Nd5 Qxc2 19. Ndf6+ Nxf6 20. Nxf6+ Ke7 21. Rad1 Bg7
22. Rd7+ Kf8 23. Ne4 {1-0 (23) Zapata,A (2500)-Velez,G/Columbia 1988/TD}) 11.
Nd1 d5 $146 ({RR} 11... e5 12. Nf5 g6 13. fxe5 Nxe5 14. Nh6 a5 15. Nf2 Ba6 16.
Nd3 Nfd7 17. Be3 Bg7 18. Rad1 Qe7 19. Qf2 Rc8 20. Rfe1 Qf6 21. Nxe5 Nxe5 22.
Ng4 Nxf3+ 23. gxf3 Qxb2 24. Rxd6 Bc4 25. Nh6 Be6 26. Red1 {Aagaard,J (2477)
-Vallejo Pons,F (2676)/Torrelavega 2007/CBM 119/1-0}) ({RR} 11... Be7 12. Nf2
Rc8 13. g4 Nc5 14. g5 Nfd7 15. a3 e5 16. fxe5 dxe5 17. Nf5 Ne6 18. Rd1 g6 19.
Nxe7 Qxe7 20. Bg4 Nd4 21. Qe3 Rxc2 22. Bd2 f5 23. gxf6 Nxf6 24. Bxb4 Nxg4 25.
Nxg4 Qh4 26. h3 {Stoma,P (2316)-Zmarzly,A (2034)/Zakopane 2011/EXT 2013/0-1
(34)}) 12. e5 Ne4 13. Bxe4 dxe4 14. Be3 Bc5 15. Nb3 Be7 16. Nf2 O-O 17. Rfd1
Qc7 18. c3 bxc3 19. Rac1 Bd5 20. bxc3 Ba3 21. Rc2 Rfc8 22. Bd4 f5 23. exf6 gxf6
24. Nxe4 f5 25. Ng5 Nf8 26. c4 h6 27. Rc3 hxg5 28. cxd5 Qxf4 29. Rh3 g4 30.
Rh8+ Kf7 31. Rf1 Rc1 32. dxe6+ Ke7 33. Rxc1 1-0

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "15"]
[White "Mejia, Roberto"]
[Black "Cuartas, Carlos Enrique"]
[Result "1/2-1/2"]
[ECO "A11"]
[BlackElo "2360"]
[PlyCount "114"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bg4 4. O-O Nbd7 5. c4 c6 6. cxd5 cxd5 7. d4 e6 8.
Nc3 ({RR} 8. Bf4 Be7 9. Nc3 O-O 10. h3 Bxf3 11. Bxf3 Nb6 12. b3 Qd7 13. a4 Nc8
14. Qd3 Nd6 15. g4 Rac8 16. Rac1 h6 17. Bg2 Rc6 18. f3 Rfc8 19. e4 Nde8 20. e5
Nh7 21. Bd2 Ba3 22. Rcd1 a6 {Wessman,R (2505)-Westerinen,H (2475)/Gausdal 1990/
CBM 016 ext/1-0 (54)}) ({RR} 8. Qb3 Nb6 9. Nc3 Be7 10. Bg5 O-O 11. Ne5 Bf5 12.
Na4 Nxa4 13. Qxa4 h6 14. Bxf6 gxf6 15. Nf3 Qb6 16. Nh4 Bh7 17. Rac1 Qxb2 18.
Qd7 Rfe8 19. Rc7 Qxe2 20. Rxb7 Qxa2 21. Rc1 Qd2 22. Qc6 Ba3 {Leidorf,S (2042)
-Junesch,G (2348)/Wiesbaden 2013/CBM 156 Extra/0-1}) 8... Bd6 9. Bg5 $146 ({RR
} 9. b3 a6 10. Bb2 O-O 11. h3 Bxf3 12. Bxf3 Rc8 13. Qd3 Qe7 14. a3 Rc7 15. Rfe1
Rd8 16. Bg2 Qf8 17. Na4 b5 18. Nc3 Rdc8 19. Rec1 Qd8 20. a4 b4 21. Nd1 a5 22.
Ne3 Rxc1+ 23. Rxc1 Rxc1+ {Wohl,A (2404)-Johansen,D (2403)/North Geelong 2012/
CBM 146 Extra/1/2-1/2 (32)}) ({RR} 9. Qb3 Qb6 10. Qxb6 Nxb6 11. a4 a6 12. Ne5
Bf5 13. Bf4 Ke7 14. f3 Bxe5 15. dxe5 Nfd7 16. g4 Bg6 17. Bg3 h5 18. h3 hxg4 19.
hxg4 Nc4 20. f4 Ne3 21. f5 Nxf1 22. Rxf1 Bh7 23. e4 d4 {Vaya Gomez,A (2167)
-Campos,L (2420)/La Roda 2006/CBM 111 ext/1/2-1/2 (39)}) 9... O-O 10. Qb3 Qb6
11. Qxb6 Nxb6 12. h3 Bxf3 13. Bxf3 Rfc8 14. Rac1 a6 15. e4 Bb4 16. Bxf6 gxf6
17. exd5 Bxc3 18. Rxc3 Nxd5 19. Bxd5 exd5 20. Rfc1 Rxc3 21. Rxc3 Re8 22. Kf1
Re4 23. Rd3 Kf8 24. f3 Re6 25. Kf2 Rb6 26. Rb3 Rxb3 27. axb3 Ke7 28. Ke3 Kd6
29. Kf4 Kc6 30. Kf5 Kb5 31. Kxf6 Kb4 32. Ke5 Kxb3 33. Kxd5 Kb4 34. Kd6 Kc4 35.
d5 a5 36. Ke5 Kc5 37. d6 Kc6 38. f4 a4 39. Kf6 Kxd6 40. Kxf7 b5 41. f5 b4 42.
Kg7 a3 43. f6 axb2 44. f7 b1=Q 45. f8=Q+ Kd5 46. Qf7+ Kd4 47. Qf6+ Ke4 48. Qc6+
Ke3 49. Qc5+ Kf3 50. Qd5+ Kf2 51. Qd2+ Kxg3 52. Qg5+ Kxh3 53. Qe3+ Kg4 54. Qe2+
Kf4 55. Qf2+ Ke4 56. Qh4+ Ke3 57. Qg3+ Ke4 1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "15"]
[White "Suarez, Luis A"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B49"]
[BlackElo "2325"]
[PlyCount "80"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nc3 e6 6. Be2 a6 7. Be3 Nf6 8.
O-O Bb4 9. Nxc6 bxc6 10. Na4 O-O 11. f4 Rb8 12. a3 $146 ({RR} 12. Bd3 Be7 13.
c4 c5 14. e5 Ne8 15. Qc2 g6 16. Qf2 f6 17. Bxc5 Bxc5 18. Qxc5 Qxc5+ 19. Nxc5
fxe5 20. fxe5 Rxb2 21. Rfb1 Rff2 22. Bf1 Ng7 23. Ne4 {1-0 (23) Beliavsky,A
(2590)-Kojder,K (2430)/Bucharest 1980/MCL}) ({RR} 12. Bd3 Be7 13. c4 d6 14. g4
c5 15. g5 Nd7 16. Rf2 g6 17. h4 f5 18. h5 Rf7 19. hxg6 hxg6 20. Rh2 Nf8 21.
exf5 gxf5 22. Nc3 Bd8 23. Rc1 Rh7 24. Rcc2 Bb7 25. Rxh7 Qxh7 26. Rh2 Qg7 {
Shirov,A (2685)-Hjartarson,J (2605)/Luzern 1993/CBM 038/1-0 (40)}) ({RR} 12.
Bd3 Be7 13. c4 d6 14. Kh1 Rd8 15. Qc2 e5 16. Rad1 Ng4 17. Bc1 Qa7 18. Qe2 exf4
19. Bxf4 Rb4 20. b3 Bh4 21. g3 {1/2-1/2 (21) Danin,A (2525)-Krejci,J (2476)/
Pardubice 2012/CBM 149 Extra}) ({RR} 12. Bf3 d5 13. e5 Nd7 14. c4 a5 15. c5 Ba6
16. a3 Bxf1 17. Qxf1 f6 18. exf6 Rxf6 19. axb4 axb4 20. Nb6 Nxb6 21. cxb6 Rxb6
22. Bxb6 Qxb6+ 23. Kh1 Qd4 24. Rc1 c5 25. Qb5 c4 26. Qe8+ Rf8 {Naju-Michimata,
T/Graz 1981/EXT 1999/1-0}) 12... Be7 13. Bd3 c5 14. c4 d6 15. Rb1 Rd8 16. Nc3
Bb7 17. Qe2 d5 18. cxd5 exd5 19. exd5 Nxd5 20. Nxd5 Bxd5 21. Bc4 Be4 22. Rbd1
Bf6 23. b3 Qc6 24. a4 Re8 25. Qh5 g6 26. Qxc5 Qb7 27. Rd2 Rbd8 28. Rfd1 Bxg2
29. Rxd8 Bxd8 30. Qa7 Bf6 31. Rd7 Qf3 32. Rxf7 Qd1+ 33. Kxg2 Qg4+ 34. Kf1 Qd1+
35. Kg2 Qg4+ 36. Kf2 Bh4+ 37. Kf1 Qf3+ 38. Kg1 Qg4+ 39. Kf1 Qf3+ 40. Kg1 Qg4+
1/2-1/2

[Event "COL-ch"]
[Site "Columbia"]
[Date "1988"]
[Round "15"]
[White "Zapata, Alonso"]
[Black "Gutierrez Castillo, Jose Antonio"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2500"]
[BlackElo "2330"]
[PlyCount "81"]
[EventDate "1988"]
[EventRounds "15"]
[EventCountry "COL"]
[EventCategory "3"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Nd5
Nxd5 ({RR} 8... Nbd7 9. Qf3 Bg4 10. Qg3 Be6 11. Qf3 Bg4 12. Qg3 Be6 {1/2-1/2
(12) Novikov,S (2534)-Alekseev,E (2625)/Kazan 2005/CBM 109}) ({RR} 8... Nbd7 9.
f3 Rc8 10. Qd2 b5 11. g4 Nc5 12. Nxc5 dxc5 13. O-O-O Be7 14. h4 O-O 15. h5 Rc6
16. Bh3 Nxd5 17. exd5 Rd6 18. Bxc5 Rxd5 19. Bxe7 Qxe7 20. Qe2 Rc5 21. Kb1 Rfc8
22. Rd2 a5 23. Rhd1 {Guerrero Guzman,F-Ruiz Cruz,M/Bogota 2013/CBM 156 Extra/
0-1 (56)}) 9. exd5 Bf5 10. a4 $146 ({RR} 10. g4 Bg6 11. h4 h6 12. Bd3 Bxd3 13.
Qxd3 Be7 14. Nd2 Nd7 15. O-O-O b5 16. g5 Nc5 17. Bxc5 dxc5 18. Ne4 Bd6 19. Qg3
Kd7 20. Rhe1 Ke7 21. gxh6 Rxh6 22. Qxg7 Qf8 23. Qg3 Rg6 24. Qh2 Qh6+ {Klups,C
(2142)-Schulz,A (1788)/SVR 2009/EXT 2011/1-0 (31)}) ({RR} 10. Bd3 e4 11. Be2
Be7 12. Bg4 Bg6 13. O-O f5 14. Bh5 Bf6 15. Nd4 Bxd4 16. Bxd4 Qg5 17. Bxg6+ Qxg6
18. Qd2 O-O 19. f3 Nd7 20. b3 Rae8 21. c4 f4 22. fxe4 Rxe4 23. Rae1 Rxe1 24.
Qxe1 Re8 {Greibrokk,I-Roholdt,N (1761)/Oslo 2012/EXT 2013/1-0 (55)}) 10... Nd7
11. a5 Rc8 12. c4 Be7 13. Qd2 O-O 14. Be2 Bg6 15. O-O f5 16. f4 Nf6 17. Qb4 Qd7
18. Rad1 Bf7 19. fxe5 dxe5 20. d6 Bd8 21. Nc5 Qc6 22. Rxf5 b6 23. axb6 Bxb6 24.
Rxe5 Rb8 25. Qa3 Rfe8 26. Bf3 Qc8 27. d7 Nxd7 28. Nxd7 Bxe3+ 29. Qxe3 Qc7 30.
b3 Rbd8 31. Rxe8+ Rxe8 32. Qd4 Qa5 33. Qd2 Qa3 34. Bd5 Bxd5 35. Qxd5+ Kh8 36.
Ne5 h6 37. Nf7+ Kh7 38. Qf5+ Kg8 39. Nxh6+ Kh8 40. Nf7+ Kg8 41. Ng5 1-0