[Event "Cartagena IRT op 4th"]
[Site "Cartagena"]
[Date "2012.06.14"]
[Round "1"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Manotas, S Franklin"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2370"]
[BlackElo "1956"]
[PlyCount "43"]
[EventDate "2012.06.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. Nf3 d5 2. c4 e6 3. d4 f5 4. Nc3 c6 5. Bf4 Nf6 6. e3 Bd6 7. Bd3 Qe7 ({RR}
7... O-O 8. Qc2 Ne4 9. O-O Qe7 10. Ne2 Nd7 11. c5 Bb8 12. Bxb8 Rxb8 13. b4 e5
14. Rab1 Nxf2 15. Bxf5 e4 16. Bxh7+ Kxh7 17. Rxf2 Kg8 18. Nd2 Rxf2 19. Kxf2 b6
20. cxb6 Rxb6 21. b5 Bb7 22. a4 {Vila Gazquez,J (2469)-Moskalenko,V (2587)
Sabadell 2010 1/2-1/2 (33)}) ({RR} 7... O-O 8. h3 Ne4 9. Qc2 b6 10. Ne5 Bxe5
11. Bxe5 Nd7 12. O-O Nxe5 13. dxe5 Bb7 14. Rfd1 Nc5 15. Bf1 Qc7 16. f4 g5 17.
b4 Na6 18. b5 Nc5 19. bxc6 Bxc6 20. cxd5 exd5 21. Nxd5 Qg7 22. Nf6+ {Mager,D
(2013)-Stock,J (1936) Hofheim 2013 1/2-1/2 (38)}) 8. Qc2 g6 $146 ({RR} 8... Ne4
9. Bxd6 Nxd6 10. cxd5 exd5 11. O-O-O Be6 12. Kb1 Nd7 13. Ne5 Nxe5 14. dxe5 Ne4
15. f3 Nxc3+ 16. Qxc3 O-O-O 17. f4 Kb8 18. Rc1 g6 19. Rhd1 Rd7 20. b4 Rc7 21.
Qc5 Qxc5 22. bxc5 b6 23. Rc3 {Karaulov,D-Gnidash,A (2187) Kharkov 2003 1/2-1/2
(34)}) 9. O-O-O Nbd7 10. Kb1 Bxf4 11. exf4 Ne4 12. h4 h5 13. Ng5 Nxg5 14. hxg5
O-O 15. f3 Qd6 16. g4 Qxf4 17. cxd5 cxd5 18. gxh5 Kg7 19. hxg6 Rg8 20. Ne2 Qd6
21. Rh7+ Kf8 22. Bxf5 1-0

[Event "Cartagena IRT op 4th"]
[Site "Cartagena"]
[Date "2012.06.16"]
[Round "4"]
[White "Ruge, Edison"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "2190"]
[BlackElo "2370"]
[PlyCount "64"]
[EventDate "2012.06.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. Nf3 Nc6 2. g3 e5 3. d3 d5 4. Bg2 Nf6 5. O-O Be7 6. c4 O-O 7. cxd5 Nxd5 8.
Nc3 ({RR} 8. a3 a5 9. b3 Be6 10. Bb2 f6 11. Nbd2 Qd7 12. Qc2 Kh8 13. Rfd1 Nb6
14. Rac1 Rfd8 15. Ne4 Qe8 16. Nfd2 Nd5 17. Nc5 Bxc5 18. Qxc5 Nde7 19. Qc2 Qh5
20. Re1 Qf7 21. Bc3 Nd5 22. Ba1 Nde7 {Carlsen,M (2714)-Gelfand,B (2736) Moscow
2007 1/2-1/2 (75)}) ({RR} 8. Nbd2 Be6 9. a3 a5 10. Qc2 Nd4 11. Nxd4 exd4 12.
Nb3 c5 13. Bd2 b6 14. Rae1 Qd7 15. e3 dxe3 16. fxe3 Rad8 17. Nc1 Rfe8 18. e4
Nc7 19. Be3 Nb5 20. Kh1 Nd4 21. Qf2 Bf6 22. Bf4 c4 {Kozlov,V (2261)-Lednev,V
(2074) Moscow 2013 1-0 (41)}) 8... Bg4 $146 ({RR} 8... Nxc3 9. bxc3 Be6 10. Bb2
Qd7 11. Qa4 f6 12. Rfd1 Qe8 13. Qc2 Bf5 14. Qb3+ Kh8 15. d4 Na5 16. Qd5 b6 17.
Nd2 Rd8 18. Qf3 Qg6 19. h3 Rfe8 20. e4 Bd7 21. Qe2 Qh6 22. Kh2 Bd6 23. Nc4 {
Nguyen,N-Dinh,N Dong Thap 2000 1-0 (39)}) ({RR} 8... Nxc3 9. bxc3 Bf5 10. d4
exd4 11. Nxd4 Nxd4 12. cxd4 Bf6 13. e3 Re8 14. Ba3 Be4 15. Bxe4 Rxe4 16. Qb3
Rb8 17. Rfc1 Re6 18. Rc5 Be7 19. Rd5 Qe8 20. Rc1 c6 21. Ra5 Bxa3 22. Rxa3 a6
23. Rb1 {Petran,P (2430)-Krpelan,W (2190) Vienna 1999 1-0 (63)}) 9. h3 Be6 10.
Bd2 f5 11. a3 a5 12. Nb5 a4 13. Re1 Nb6 14. e4 Qxd3 15. Nxc7 Bb3 16. Qe2 Qxe2
17. Rxe2 fxe4 18. Nxa8 exf3 19. Bxf3 Rxa8 20. Bc3 Bf6 21. Rd2 Be6 22. Kg2 Nd4
23. Bxd4 exd4 24. Bxb7 Rb8 25. Bc6 Rc8 26. Bb7 Rc5 27. Re1 Kf7 28. Be4 g6 29.
Rc2 Rxc2 30. Bxc2 Bd5+ 31. f3 Bb3 32. Bd3 Nc4 0-1

[Event "Cartagena IRT op 4th"]
[Site "Cartagena"]
[Date "2012.06.17"]
[Round "6"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Nino, Juan Camilo"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2370"]
[BlackElo "2082"]
[PlyCount "77"]
[EventDate "2012.06.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. Nf3 e6 2. g3 b6 3. Bg2 Bb7 4. c4 c5 5. O-O Nf6 6. d4 cxd4 7. Qxd4 d6 8. Nc3
Be7 9. e4 a6 10. b3 Nbd7 11. Bb2 Qc7 12. Rac1 O-O 13. Qe3 ({RR} 13. h3 Rad8 14.
Qe3 Rfe8 15. Nd4 Bf8 16. Rfe1 Qb8 17. Rcd1 g6 18. Ba1 Bg7 19. Qd2 Qa8 20. Nc2
Nc5 21. b4 Ncxe4 22. Nxe4 Bxe4 23. Bxf6 Bxg2 24. Bxd8 Rxd8 25. Ne3 Bf3 26. Rc1
h5 27. Kh2 Kh7 {Ostojic,N (2388)-Perunovic,M (2568) Belgrade 2009 1/2-1/2 (44)}
) 13... Nc5 $146 ({RR} 13... Rfe8 14. h3 Rac8 15. Nd4 Bf8 16. Qd2 Qb8 17. f4
Qa8 18. Rfe1 Nc5 19. e5 Bxg2 20. Qxg2 dxe5 21. fxe5 Nd3 22. exf6 Qxg2+ 23. Kxg2
Nxb2 24. Re2 Nxc4 25. bxc4 Rxc4 26. Rd2 Rec8 27. Nde2 gxf6 28. Rd4 {Saleh,M
(2220)-Charbonneau,P (2270) North Bay 1998 1/2-1/2 (37)}) ({RR} 13... Rfe8 14.
Rfe1 Rac8 15. h3 Qb8 16. Nd2 Qa8 17. a3 Bf8 18. Qe2 g6 19. b4 Bg7 20. Kh2 Qb8
21. f4 h5 22. Qf2 b5 23. cxb5 axb5 24. Nxb5 h4 25. gxh4 e5 26. Nc4 Rxc4 27.
Rxc4 Ba6 28. a4 {Hawkins,J (2521)-Wukits,R (2294) Vienna 2013 1-0 (39)}) 14.
Nd4 Ng4 15. Qe2 Ne5 16. Rfd1 Rfd8 17. b4 Ncd7 18. Nb1 Rac8 19. Nd2 Nf6 20. a3
Nc6 21. Nc2 a5 22. Bc3 Ne5 23. Ne3 axb4 24. axb4 Ba6 25. Bb2 Qb8 26. Ra1 Bb7
27. h3 d5 28. exd5 Bxb4 29. dxe6 Bxg2 30. Nxg2 Bd6 31. exf7+ Kxf7 32. Ne4 Nxe4
33. Qxe4 Nxc4 34. Qd5+ Kf8 35. Bc3 Qc7 36. Rd3 Rd7 37. Ra4 Qc6 38. Rf3+ Ke8 39.
Qg8+ 1-0

[Event "Cartagena IRT op 4th"]
[Site "Cartagena"]
[Date "2012.06.17"]
[Round "7"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Lopez Hernandez, Carlos Manuel"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "2370"]
[BlackElo "2302"]
[PlyCount "56"]
[EventDate "2012.06.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. e4 c5 2. g3 d5 3. exd5 Qxd5 4. Qf3 Qd8 ({RR} 4... Qe6+ 5. Qe3 Nc6 6. Na3 Nf6
7. Nf3 Ng4 8. Qxe6 Bxe6 9. Bg2 Bd5 10. O-O O-O-O 11. d3 Nd4 12. Nxd4 Bxg2 13.
Kxg2 cxd4 14. Re1 e6 15. Nc4 Bb4 16. Re2 Nf6 17. Ne5 Rhf8 18. Bg5 Be7 19. c3 {
Bedgarani,I (2385)-Mikhaletz,L (2495) Berlin 1998 1/2-1/2 (48)}) ({RR} 4...
Qe5+ 5. Ne2 Nc6 6. Bg2 Nf6 7. Qe3 Qxe3 8. dxe3 Bd7 9. O-O O-O-O 10. e4 Nb4 11.
Na3 Bc6 12. Be3 e6 13. Nc3 Be7 14. Rac1 Ng4 15. Rfe1 Nxe3 16. Rxe3 Rd2 17. Nc4
Rxc2 18. Rxc2 Nxc2 19. Rf3 {Gospodinova,N (1532)-Voiska,M (2237) Vratsa 2013
0-1 (35)}) 5. Bg2 Nf6 6. Ne2 e6 $146 ({RR} 6... e5 7. b4 cxb4 8. O-O Be7 9. a3
Nc6 10. axb4 Nxb4 11. Qb3 O-O 12. Ba3 a5 13. Qb2 Re8 14. d3 Bg4 15. Nbc3 Qc8
16. Rfe1 Bh3 17. Bh1 Ra6 18. Rac1 Ng4 19. Ne4 Qf5 20. Bg2 Rh6 21. f3 {Harding,
T (2230)-Conquest,S (2460) Dublin 1991 0-1 (34)}) ({RR} 6... e5 7. d3 Be7 8.
Bg5 O-O 9. Nbc3 Nc6 10. Bxf6 Bxf6 11. Nd5 Bg5 12. h4 Bh6 13. Ne3 e4 14. Qxe4
Re8 15. Qc4 Nd4 16. Nf4 Bxf4 17. gxf4 Be6 18. Qxc5 Rc8 19. Qg5 f6 20. Qg3 Rxc2
21. Nxc2 {Bedija,M-Dzhakaev,D (2415) Krasnodar 1998 0-1}) 7. O-O Nc6 8. b3 Be7
9. Na3 O-O 10. Nc4 e5 11. Ne3 e4 12. Qf4 Bd6 13. Qh4 Ne5 14. Bxe4 Nxe4 15. Qxe4
Bd7 16. Nf4 Bc6 17. Nfd5 f5 18. Qg2 f4 19. gxf4 Ng6 20. Bb2 Rxf4 21. c4 Qd7 22.
f3 Rh4 23. Ng4 Bxd5 24. cxd5 Rf8 25. d4 Nf4 26. Qd2 Qf5 27. dxc5 Rxg4+ 28. fxg4
Bxc5+ 0-1

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.02"]
[Round "1"]
[White "Ruiz C, Joshua Daniel"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[ECO "C86"]
[WhiteElo "2306"]
[BlackElo "2370"]
[PlyCount "105"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 Be7 6. O-O b5 7. Bb3 d6 8. c3
O-O 9. Rd1 Re8 ({RR} 9... d5 10. d3 Bb7 11. Nbd2 dxe4 12. dxe4 Bd6 13. Nf1 Ne7
14. Ng3 Qe8 15. Nh4 Kh8 16. Bc2 Qc6 17. Bg5 Nfg8 18. Nhf5 f6 19. Be3 Rad8 20.
a4 Bc5 21. h4 Bxe3 22. Nxe3 Ng6 23. h5 Nf4 24. Qf3 {Hou,Y (2602)-Zhang,Z (2442)
Xinghua Jiangsu 2011 1/2-1/2 (41)}) ({RR} 9... Bb7 10. d3 Nb8 11. Nbd2 Nbd7 12.
Nf1 Nc5 13. Bc2 Re8 14. Ng3 Bf8 15. Be3 g6 16. b4 Ne6 17. d4 exd4 18. cxd4 Bg7
19. a4 Nf8 20. Nd2 Qd7 21. f3 Bc6 22. axb5 Bxb5 23. Bd3 Ne6 24. Bxb5 {Mamani,J
(1959)-Cuellar Elisvan,D (2057) Lima 2013 0-1 (42)}) 10. Ng5 d5 $146 ({RR}
10... Rf8 11. d4 h6 12. Nf3 Bd7 13. Nbd2 exd4 14. cxd4 Re8 15. Nf1 Bf8 16. Ng3
Nxe4 17. Nxe4 Bf5 18. Bd5 Bxe4 19. Bxe4 d5 20. Ne5 Nxe5 21. dxe5 Rxe5 22. Bh7+
Kxh7 23. Qxe5 {1-0 (23) Tiviakov,S (2535)-Livshits,R (2225) Mamaia 1991}) 11.
exd5 Ng4 12. Nxf7 Kxf7 13. d6+ Kf8 14. dxe7+ Qxe7 15. Qf3+ Qf6 16. Bd5 Bf5 17.
d3 e4 18. dxe4 Bxe4 19. Bxe4 Rxe4 20. h3 Rae8 21. Rf1 Kg8 22. hxg4 Qg6 23. Qf5
Qd6 24. Be3 g6 25. Qf3 Qe6 26. Nd2 Rxg4 27. Qh3 h5 28. Nf3 Qc4 29. b3 Qxc3 30.
Rac1 Qf6 31. Bg5 Qe6 32. Rfe1 Qd7 33. Nh2 Rd4 34. Rxe8+ Qxe8 35. Qc3 Rd6 36.
Bf4 Nd4 37. Re1 Ne2+ 38. Kf1 Rd1 39. Qe5 Qxe5 40. Bxe5 Rxe1+ 41. Kxe1 Nc1 42.
Kd2 Nxa2 43. Bxc7 Nb4 44. Nf3 Nd5 45. Bd8 Kf7 46. Ne5+ Kg7 47. g3 Nf6 48. Kd3
g5 49. b4 h4 50. gxh4 gxh4 51. Bxf6+ Kxf6 52. Ke4 h3 53. f4 1-0

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.03"]
[Round "2"]
[White "Zapata, Alonso"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[ECO "C88"]
[WhiteElo "2484"]
[BlackElo "2370"]
[PlyCount "55"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

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
b4 9. d3 Bc5 ({RR} 9... a5 10. Nbd2 h6 11. Nc4 d6 12. Ne3 Be6 13. Nd5 Re8 14.
Be3 Bf8 15. Nd2 Nd7 16. f4 exf4 17. Nxf4 Bxb3 18. Nxb3 Nf6 19. Nd4 Ne5 20. Nf3
c5 21. Bf2 g6 22. b3 Bg7 23. Nxe5 Rxe5 24. Bg3 {Topalov,V (2700)-Svidler,P
(2713) Frankfurt 1999 0-1 (34)}) 10. Bg5 $146 ({RR} 10. Nxe5 Nxe5 11. d4 Bxd4
12. Qxd4 Qe7 13. f4 Nc6 14. Qd3 d6 15. Be3 Re8 16. Nd2 Bb7 17. Bd5 Na5 18. Bxb7
Nxb7 19. Bf2 Qd7 20. Nf3 Ng4 21. b3 Nxf2 22. Kxf2 Nc5 23. Qd4 a5 24. Rad1 Ne6 {
Szerenyi,B (1880)-Kiss,A (1650) Hungary 2007 1-0 (40)}) ({RR} 10. h3 d6 11. c3
bxc3 12. bxc3 Rb8 13. Ba2 Ne7 14. d4 exd4 15. cxd4 Bb4 16. Bd2 a5 17. Nc3 Bb7
18. Qc2 Ng6 19. Nb5 c6 20. Nc3 Ba6 21. Rad1 Nd7 22. e5 dxe5 23. dxe5 Nc5 24.
Bg5 Qc8 {Lopez Martinez,J (2555)-Hansen,E (2567) Barcelona 2013 1-0 (35)})
10... h6 11. Bh4 d6 12. c3 Rb8 13. Nbd2 bxc3 14. bxc3 Be6 15. Bd5 Bxd5 16. exd5
Ne7 17. Bxf6 gxf6 18. Ne4 Ng6 19. d4 Ba7 20. Ng3 Kh7 21. Qd3 a5 22. Nh5 Rb3 23.
Nd2 Rb7 24. Ne4 f5 25. Nef6+ Kh8 26. Qxf5 exd4 27. Nd7 Rg8 28. Qxf7 1-0

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.03"]
[Round "3"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Tovio, Israel"]
[Result "1-0"]
[ECO "D58"]
[WhiteElo "2370"]
[BlackElo "2289"]
[PlyCount "68"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Be7 5. Bg5 h6 6. Bh4 O-O 7. e3 b6 8. Rc1
Bb7 9. Bxf6 Bxf6 10. cxd5 exd5 11. b4 c6 12. Qb3 Qd6 13. Be2 Nd7 14. O-O Rfe8
15. Rfd1 ({RR} 15. Rfe1 Be7 16. a3 a5 17. e4 axb4 18. e5 Qe6 19. axb4 b5 20.
Bd3 Nb6 21. Qb1 Bc8 22. Ne2 Nc4 23. Rc3 ({RR} 23. h3) 23... Bf8 24. Nf4 Qg4 25.
g3 Kh8 26. Bf1 ({RR} 26. Kg2 g5) 26... Qf5 27. Bd3 Qg4 28. Nh4 Qg5 29. Nf3 {1/
2-1/2 (29) Timman,J (2625)-Giorgadze,T (2535) Bad Lauterberg 1979}) 15... a6 (
{RR} 15... a5 16. b5 c5 17. Qb1 Rad8 18. dxc5 Nxc5 19. Nd4 Bxd4 20. exd4 Ne4
21. Bf3 Ng5 22. Bg4 Qf4 23. Qf5 Qd6 24. Qd3 Qf4 25. Qg3 Qxg3 26. hxg3 Rd6 27.
Na4 Re7 28. Rc2 g6 29. Bf3 h5 30. Be2 {Zoltek,T (2183)-Tonteri,A (1990)
Belgrade 2010 1/2-1/2 (45)}) 16. a4 Be7 $146 ({RR} 16... b5 17. a5 Be7 18. Rb1
Bd8 19. Ne1 Bc7 20. g3 Nf6 21. Nd3 Bc8 22. Rbc1 Bf5 23. Ne5 Rxe5 24. dxe5 Qxe5
25. Rd2 h5 26. Bf1 h4 27. Bg2 Rd8 28. Ne2 Rd6 29. Nd4 Ne4 30. Rdc2 c5 31. Rxc5
{Martin,A (2375)-Ujhazi,I (2000) Caorle 1981 1-0 (52)}) 17. Rb1 Qe6 18. Bf1 Bd6
19. g3 Nf6 20. Bg2 b5 21. Ne1 Nd7 22. axb5 axb5 23. e4 dxe4 24. Bxe4 Nf6 25.
Bg2 Qc4 26. Qxc4 bxc4 27. Nc2 Nd5 28. Nxd5 cxd5 29. Ne3 Reb8 30. Bxd5 Bxd5 31.
Nxd5 Rb5 32. Ne3 c3 33. Nc2 Ra3 34. Rdc1 Rb8 1-0

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.04"]
[Round "4"]
[White "Mateus Urbano, Luis Alejandro"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2246"]
[BlackElo "2370"]
[PlyCount "106"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8.
Nd2 Qe6 ({RR} 8... Rb8 9. c4 Nb4 10. Nf3 c5 11. g3 Qe6 12. Bg2 Be7 13. O-O Bb7
14. b3 O-O 15. Bb2 Rfe8 16. Rfe1 h6 17. Bc3 Bf8 18. Rad1 Ba8 19. Bxb4 Rxb4 20.
Qd2 Rd8 21. Nh4 Rbb8 22. Bd5 Bxd5 23. cxd5 {Nepomniachtchi,I (2733)-Karjakin,S
(2776) Moscow 2011 1-0 (39)}) ({RR} 8... Rb8 9. c4 Ba6 10. b3 Qb4 11. Bb2 Nc3
12. Qe3 Na4 13. a3 Qa5 14. b4 Qb6 15. Qxb6 axb6 16. Bc1 d6 17. f4 dxe5 18. fxe5
g6 19. Bd3 Bg7 20. Nf3 f5 21. Bc2 Nc3 22. Bb2 Ne4 23. Bb3 {Robson,R (2620)
-Bryant,J (2442) Saint Louis 2013 0-1 (51)}) 9. Nf3 c5 10. c4 Nb4 11. a3 $146 (
{RR} 11. g3 Qf5 12. Nh4 Qc2 13. Bg2 Rb8 14. Be4 Qxe2+ 15. Kxe2 Bb7 16. Bxb7
Rxb7 17. Bd2 Nc2 18. Rab1 Nd4+ 19. Kd3 Be7 20. Ng2 f6 21. exf6 Bxf6 22. Bc3 Kf7
23. Ne3 Nc6 24. f4 Re8 25. Rhe1 d6 {Bratko,I (2229)-Potocnik,P (2194)
Ljubljana 2008 1/2-1/2 (33)}) 11... Nc6 12. Bd2 g6 13. Bc3 Bg7 14. O-O-O O-O
15. Rd5 Qe7 16. Qe3 Nd4 17. Nxd4 cxd4 18. Qxd4 Re8 19. Qd2 c6 20. Rd3 Qc5 21.
f4 Qxc4 22. Kb1 d5 23. Rd4 Qc5 24. Ra4 Qb6 25. Ba5 Qb7 26. Bb4 Bf5+ 27. Ka1 f6
28. Ba6 Qd7 29. exf6 Bxf6 30. Bc3 d4 31. Rxd4 Bxd4 32. Qxd4 Qxd4 33. Bxd4 Rad8
34. Bc4+ Be6 35. Bxe6+ Rxe6 36. Be5 Rd2 37. g4 h5 38. h3 h4 39. Rf1 Rd3 40. Bc3
Rxh3 41. f5 gxf5 42. gxf5 Ree3 43. f6 Rhf3 44. Rg1+ Rg3 45. Rf1 Kf7 46. Rf4 h3
47. Rh4 Rxc3 48. bxc3 Kxf6 49. Kb2 Kg5 50. Rh7 Kg4 51. Kb3 Rf3 52. Kb4 Rf5 53.
a4 a5+ 0-1

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.05"]
[Round "5"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Torres, Juan Camilo"]
[Result "0-1"]
[ECO "B26"]
[WhiteElo "2370"]
[BlackElo "2337"]
[PlyCount "120"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 Nd4 8. Nd1
Ne7 9. c3 Ndc6 10. Bh6 O-O 11. h4 f6 12. Bxg7 Kxg7 13. h5 g5 14. h6+ Kh8 15. f4
gxf4 16. gxf4 b5 17. Ne2 $146 ({RR} 17. Ne3 d5 18. exd5 exd5 19. O-O-O Be6 20.
Bh3 Qd7 21. Kb1 d4 22. Bxe6 Qxe6 23. Nc2 Rg8 24. cxd4 cxd4 25. Nf3 Nf5 26. Qf2
Qd7 27. Rh5 {1/2-1/2 (27) Jonitz,J (2135)-Nonnenmacher,E (2285) Germany 2005})
17... b4 18. Ne3 bxc3 19. Qxc3 Rb8 20. O-O-O e5 21. Nd5 Bg4 22. Rd2 Bxe2 23.
Rxe2 Nxd5 24. exd5 Nd4 25. Rf2 exf4 26. Kb1 f5 27. Rxf4 Qg5 28. Rf2 Rf6 29. Qa5
Rxh6 30. Rxh6 Qxh6 31. Qxa7 Rg8 32. a3 Qg7 33. Qa5 Qg3 34. Qe1 Qxd3+ 35. Ka2
Nc2 36. Qc3+ Qxc3 37. bxc3 Ne3 38. Bf3 Rb8 39. a4 Kg7 40. Rb2 Rxb2+ 41. Kxb2
Nc4+ 42. Kc1 Kf6 43. Be2 Na5 44. Kd2 Ke5 45. Ke3 f4+ 46. Kf3 Nb3 47. Bd3 h5 48.
Bg6 c4 49. Bxh5 Nd2+ 50. Kg4 Kxd5 51. Kxf4 Nb1 52. a5 Nxc3 53. a6 Nb5 54. Be8
Na7 55. Kf5 Kc5 56. Ke4 d5+ 57. Ke3 Nc6 58. Kd2 d4 59. Kc1 Kb6 60. Bf7 Ne5 0-1

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.05"]
[Round "6"]
[White "Garcia, Gildardo"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "2414"]
[BlackElo "2370"]
[PlyCount "73"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Re1
Re8 9. Nbd2 Bf8 10. Nf1 b5 11. Bb3 Na5 12. Bc2 c5 13. Ng3 Nc6 ({RR} 13... g6
14. h3 Bg7 15. Be3 Qc7 16. b4 cxb4 17. cxb4 Nc6 18. a3 d5 19. Rc1 d4 20. Bd2
Qd6 21. Bb3 Be6 22. Ng5 Bxb3 23. Qxb3 Re7 24. Rc2 h6 25. Rec1 Rc8 26. Nf3 Rec7
27. Ne2 Nd7 28. Qd5 {Heim,S (2339)-Socko,B (2615) Saint Vincent 2005 1/2-1/2
(58)}) ({RR} 13... g6 14. h3 Bg7 15. Be3 Qc7 16. Qd2 d5 17. Bh6 dxe4 18. Bxg7
Kxg7 19. Nxe4 Nxe4 20. Rxe4 f6 21. Rae1 Be6 22. Rh4 Kg8 23. Nh2 Rad8 24. Ng4
Bxg4 25. Rxg4 f5 26. Rh4 c4 27. d4 Nc6 28. Bxf5 {Lim,K (1825)-Senador,E (2329)
Manila 2013 0-1 (52)}) 14. a4 b4 $146 ({RR} 14... Rb8 15. h3 h6 16. d4 cxd4 17.
cxd4 b4 18. Be3 Bd7 19. d5 Na5 20. Bd3 Bc8 21. Nd2 g6 22. Qe2 Ra8 23. f3 Nd7
24. Ngf1 Bg7 25. Rec1 Bb7 26. Rc2 Rc8 27. Rac1 Rxc2 28. Rxc2 Qa8 29. Nc4 {
Shkapenko,P (2404)-Jedryczka,K (2265) Warsaw 2008 1-0 (43)}) 15. h3 g6 16. Bb3
Rb8 17. Bg5 h6 18. Bxf6 Qxf6 19. Bd5 Ne7 20. Bc4 h5 21. d4 exd4 22. e5 dxe5 23.
Ne4 Qb6 24. a5 Qd8 25. Nxe5 Be6 26. Bxe6 fxe6 27. Nf6+ Kg7 28. Nxe8+ Qxe8 29.
cxd4 Nf5 30. dxc5 Rd8 31. Qc2 Rd5 32. c6 Bd6 33. Nd3 Nd4 34. Qc4 Qxc6 35. Rac1
Qxc4 36. Rxc4 Kf6 37. Nxb4 1-0

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.07"]
[Round "7"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Barrientos Chavarriaga, Sergio"]
[Result "0-1"]
[ECO "A17"]
[WhiteElo "2370"]
[BlackElo "2513"]
[PlyCount "56"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

1. Nf3 {Ribli Fedorowicz Ribli} Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 O-O 5. Bg2 d5 6.
Qb3 ({RR} 6. O-O) ({RR} 6. a3) 6... c5 7. O-O ({RR} 7. a3 Bxc3 8. Qxc3 b6 9. b4
Nbd7) 7... Nc6 8. d3 h6 ({RR} 8... Bxc3 9. Qxc3 d4 10. Qa3 Qb6 11. Bf4) 9. Na4
({RR} 9. e3 Re8 10. a3 dxc4 11. dxc4 Bxc3 12. Qxc3 e5 13. b4 e4 14. Nd2 Qe7 15.
b5 Ne5) ({RR} 9. Bf4 Re8 10. Ne5 Nxe5 11. Bxe5 Ng4 12. a3 Ba5 13. Bf4 e5 14.
Bc1 Bxc3 15. bxc3) ({RR} 9. e3 Re8 10. a3 dxc4 11. dxc4 Bxc3 12. Qxc3 e5 13. b4
e4 14. Nd2 Qe7 15. b5 Ne5 16. Nxe4 Nf3+ 17. Bxf3 Nxe4 18. Bxe4 Qxe4 19. f3 Qe7
20. e4 Be6 21. Be3 {1/2-1/2 (21) Kasparov,G (2795)-Anand,V (2725) New York
1995 CBM 049 [Fedorowicz]}) ({RR} 9. e3 Re8 10. a3 dxc4 11. dxc4 Bxc3 12. Qxc3
e5 13. b4 e4) 9... b6 10. a3 Ba5 11. Rd1 $146 ({RR} 11. Bf4 Bd7 ({RR} 11... Nh5
12. Ne5 ({RR} 12. Bd2 dxc4 ({RR} 12... Bxd2 13. Nxd2 Nf6) 13. dxc4 Bxd2 14.
Rad1) ({RR} 12. Be3 d4 13. Nxd4 cxd4 14. Bxc6) 12... Nxf4 13. gxf4 Nxe5 14.
fxe5 dxc4) 12. Nc3 Bxc3 13. Qxc3 ({RR} 13. bxc3 d4 ({RR} 13... Qe7) 14. Qc2 Re8
15. Ne5) 13... d4 ({RR} 13... Qe7 14. Ne5 Nh5 15. Nxd7 ({RR} 15. Nxc6 Bxc6 16.
Bd2 d4 17. Qc2 Bxg2 18. Kxg2 e5) 15... Nxf4 16. Nxf8 ({RR} 16. gxf4 Qxd7) ({RR
} 16. Nf6+ Qxf6 17. Qxf6 Nxe2+ 18. Kh1 gxf6) 16... Nxe2+) ({RR} 13... d4 14.
Qc2 Ne8 15. b4 f6 16. Bd2 Nd6 17. e3) 14. Qc2 Ne8 ({RR} 14... Qe7 15. Ne5 Rac8)
({RR} 14... Rc8 15. Bd6 Re8 16. b4) ({RR} 14... Re8 15. Ne5 Nxe5 16. Bxe5 Ng4
17. Bxa8 Qxa8 18. Bf4 e5 19. Bc1 f5 20. f3 Ne3 21. Bxe3 dxe3 22. Kh1 Bc6 23.
Qc1 f4 24. Qc3 fxg3 25. Qc1) 15. b4 f6 16. Bd2 Nd6 17. e3 e5 18. exd4 exd4 19.
Rab1 Rc8 ({RR} 19... Rb8 20. Bf4) 20. Bf4 Nf7 21. bxc5 bxc5 22. h3 Re8 23. Qd1
Nce5 ({RR} 23... g5 24. Bd2 Kg7) 24. Bxe5 Nxe5 25. Re1 Nf7 {Khalifman,A (2640)
-Aseev,K (2560) St Petersburg 1996 CBM 056 [Ribli] 1-0 (41)} ({RR} 25... Nxf3+
26. Qxf3 Bc6 27. Qh5 ({RR} 27. Qf5))) ({RR} 11. Bf4 Bd7 12. Nc3 Bxc3 13. Qxc3
Re8 14. d4 Ne4 ({RR} 14... dxc4 15. dxc5 ({RR} 15. Qxc4)) 15. Qd3 cxd4 16. cxd5
({RR} 16. Nxd4 Nc5 17. Nxc6 ({RR} 17. Qd1 Nxd4 18. Qxd4 Nb3) 17... Nxd3 18.
Nxd8 Nxf4 19. gxf4 Raxd8) 16... exd5 17. Nxd4 Nc5 18. Nxc6 Nxd3 ({RR} 18...
Bxc6 19. Qc2) 19. Nxd8 Nxf4 20. gxf4 Raxd8 21. Rfd1 ({RR} 21. Bxd5 Rxe2) ({RR}
21. e3 Bg4 22. h3 Bh5 23. Rac1 d4 24. e4 d3 25. f3 f5 26. e5 Rd4) 21... Bg4 ({
RR} 21... Rxe2 22. Rxd5) 22. f3 Be6 23. Rac1 Rc8 24. Kf2 Kf8 25. e3 Ke7 {
Illescas Cordoba,M (2635)-Almasi,Z (2595) Ubeda 1997 CBM 058 [Ribli] 1/2-1/2
(35)}) 11... Bd7 12. Nc3 d4 13. Na2 e5 14. Qc2 Re8 15. Rb1 Qe7 16. b4 cxb4 17.
axb4 Bxb4 18. Nxe5 Qxe5 19. Nxb4 Rac8 20. e4 dxe3 21. Bxe3 Nxb4 22. Rxb4 Qh5
23. Bd4 Re2 24. Qc1 Rce8 25. Rf1 Ng4 26. h3 Ne5 27. g4 Nxg4 28. hxg4 Qxg4 0-1

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.07"]
[Round "8"]
[White "Arenas Vanegas, David"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[ECO "C79"]
[WhiteElo "2405"]
[BlackElo "2370"]
[PlyCount "95"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. O-O b5 7. Bb3 Na5 8. Re1 (
{RR} 8. Nbd2 Be7 9. a4 Nxb3 10. Nxb3 Bd7 11. axb5 axb5 12. Rxa8 Qxa8 13. Bg5 h6
14. Bh4 c5 15. Qd2 O-O 16. Ra1 Qb7 17. Qa5 c4 18. Nbd2 cxd3 19. cxd3 Bc6 20.
Nf1 Ra8 21. Qxa8+ Qxa8 22. Rxa8+ Bxa8 {Nakamura,H (2648)-Christiansen,L (2575)
ICC INT 2007 1/2-1/2 (55)}) ({RR} 8. c4 Be7 9. Bd2 c6 10. Nc3 O-O 11. h3 Be6
12. Ng5 Bd7 13. Nf3 h6 14. Nh2 Be6 15. Qe2 Qb8 16. Be3 bxc4 17. Bc2 Qxb2 18.
Na4 cxd3 19. Qxd3 Qb5 20. Qd1 Nc4 21. Bc1 d5 22. Rb1 Qa5 {Ardila,O (2055)
-Castro Rojas,O (2349) Dosquebrad 2013 0-1}) 8... Bb7 ({RR} 8... Nxb3 9. axb3
c5 10. c3 Qb6 11. h3 h6 12. d4 Nd7 13. Be3 Be7 14. dxe5 dxe5 15. b4 Qc7 16.
bxc5 Bxc5 17. Bxc5 Qxc5 18. Qd5 Qxd5 19. exd5 f6 20. Nd4 Bb7 21. Nf5 O-O 22.
Na3 g6 23. Nxh6+ {Dwilewicz,K (1635)-Topolan,A (1449) Walbrzych 2013 1/2-1/2
(41)}) 9. Nc3 Nxb3 10. axb3 c5 $146 ({RR} 10... Be7 11. d4 exd4 12. Nxd4 Qd7
13. Nf5 O-O-O 14. Nxg7 Rhg8 15. Nf5 Rxg2+ 16. Kxg2 Qxf5 17. f3 Rg8+ 18. Kh1 Qh5
19. Qe2 d5 20. Rg1 Rxg1+ 21. Kxg1 dxe4 22. fxe4 Bc5+ 23. Kf1 Ng4 24. Bf4 Bf2
25. Qd3 {Rolvaag,B (1479)-Mikalsen,O (1702) Vadso 2007 0-1 (40)}) 11. Bg5 Be7
12. Bxf6 Bxf6 13. Nd2 O-O 14. Nf1 b4 15. Nd5 Bxd5 16. exd5 e4 17. Ra2 exd3 18.
Qxd3 Re8 19. Rxe8+ Qxe8 20. Rxa6 Bxb2 21. Rxd6 Bd4 22. Ra6 Rxa6 23. Qxa6 g6 24.
Qd3 Qe5 25. Qf3 Kf8 26. g3 Qe1 27. Kg2 Qc1 28. Ne3 Qd2 29. Nc4 Qxc2 30. g4 Ke7
31. g5 Qf5 32. Qxf5 gxf5 33. Kg3 f4+ 34. Kxf4 Bxf2 35. Kf5 Bh4 36. Kg4 Be1 37.
Kh5 Bf2 38. Kg4 f6 39. Kf5 fxg5 40. Kxg5 Kf7 41. Kf5 Bg1 42. h3 Bh2 43. Nd2 Bg1
44. Nf3 Be3 45. d6 Ke8 46. Ke4 Bf2 47. Kd5 Bg3 48. Nd2 1-0

[Event "COL-ch"]
[Site "El Bagre"]
[Date "2012.06.09"]
[Round "10"]
[White "Ruiz Aguilar, Pablo Alexander"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C90"]
[WhiteElo "2299"]
[BlackElo "2370"]
[PlyCount "100"]
[EventDate "2012.06.02"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. d3 d6 7. c3 O-O 8. Re1
Re8 9. Nbd2 Bf8 10. Nf1 b5 11. Bb3 Na5 12. Bc2 c5 13. a4 b4 ({RR} 13... Bd7 14.
Ng3 g6 15. h3 Bg7 16. Bd2 Qc7 {1/2-1/2 (16) Savon,V (2425)-Basin,L (2445)
Trnava 1989}) ({RR} 13... Rb8 14. axb5 axb5 15. Bg5 Nc6 16. Ne3 h6 17. Bh4 g5
18. Bg3 Bg7 19. h4 g4 20. Nh2 h5 21. f3 gxf3 22. Qxf3 Ne7 23. Rad1 Ng6 24. Nf5
Bxf5 25. Qxf5 Qc8 26. Rf1 Qxf5 27. Rxf5 Ne7 28. Rf3 {Campelo,L (2250)
-Sztokbant,B (2059) Osasco 2012 1/2-1/2 (52)}) 14. Bg5 $146 ({RR} 14. Ne3 Rb8
15. d4 bxc3 16. bxc3 cxd4 17. cxd4 Nc6 18. a5 Nxd4 19. Nxd4 exd4 20. Qxd4 d5
21. exd5 Qxd5 22. Bb2 Qxd4 23. Bxd4 Nd7 24. Ba4 Re6 25. Rec1 Nf6 26. Ba7 Ra8
27. Rab1 Bd7 28. Bxd7 Nxd7 {Matanovic,A-Barcza,G Zagreb 1955 1-0 (126)}) ({RR}
14. cxb4 cxb4 15. d4 Bg4 16. d5 Nd7 17. Ne3 Bh5 18. g4 Bg6 19. Nd2 Nc5 20. b3
Be7 21. Nec4 Nxc4 22. Nxc4 a5 23. f3 Qc7 24. Be3 Rec8 25. Qd2 {1/2-1/2 (25)
Zakic,S (2350)-Tosic,M (2455) Kladovo 1991}) 14... Rb8 15. Qe2 b3 16. Bd1 h6
17. Bxf6 Qxf6 18. Ne3 Bb7 19. Nd2 Bc6 20. Ra3 Qe6 21. Nec4 Nxc4 22. dxc4 f5 23.
f3 Be7 24. exf5 Qxf5 25. Ne4 d5 26. cxd5 Bxd5 27. c4 Bxe4 28. fxe4 Qd7 29. Rxb3
Qd4+ 30. Kh1 Rxb3 31. Bxb3 Rf8 32. Rf1 Rxf1+ 33. Qxf1 Qxb2 34. Bd1 Qa1 35. g3
g6 36. Kg2 Qd4 37. Bg4 Qxe4+ 38. Kh3 Qc6 39. Qb1 h5 40. Qb8+ Kh7 41. Be2 Bf6
42. a5 Qe4 43. Qb2 Bd8 44. Qd2 Bxa5 45. Qxa5 Qxe2 46. Qxc5 Qf1+ 47. Kh4 Qf5 48.
h3 Kh6 49. g4 Qf4 50. Qb6 a5 0-1

[Event "Dosquebrad op"]
[Site "Dosquebrad"]
[Date "2013.06.19"]
[Round "1"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Ardila, Donaldo"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2349"]
[BlackElo "1873"]
[PlyCount "65"]
[EventDate "2013.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]

1. d4 d5 2. Bg5 c6 3. Nf3 Qb6 4. b3 Bf5 5. e3 e6 6. Bd3 Bxd3 7. cxd3 ({RR} 7.
Qxd3 Nd7 8. O-O Ngf6 9. Nbd2 Be7 10. c4 h6 11. Bh4 Qc7 12. c5 O-O 13. Bg3 Qd8
14. b4 Nh5 15. a4 Nxg3 16. hxg3 Bf6 17. e4 dxe4 18. Nxe4 Be7 19. Rfd1 Nf6 20.
Nxf6+ Bxf6 21. Ne5 Bxe5 {Haddad Filho,P (1981)-Pastana,R (1768) Altinopolis
2013 1/2-1/2}) 7... Be7 $146 ({RR} 7... Nd7 8. O-O Ngf6 9. Nc3 Be7 10. h3 h6
11. Bf4 O-O 12. Rc1 Rac8 13. Bh2 c5 14. dxc5 Nxc5 15. Ne5 Bd6 16. d4 Bxe5 17.
Bxe5 Ncd7 18. Bh2 Qa5 19. Qd2 Rc6 20. Qb2 Rfc8 21. b4 Qd8 22. a3 {Raeva,
E-Kohut,A Oropesa del Mar 1998 0-1 (73)}) 8. Bf4 Nd7 9. O-O Ngf6 10. Nc3 O-O
11. e4 Rac8 12. Re1 Bb4 13. Bd2 c5 14. a3 Bxc3 15. Bxc3 c4 16. dxc4 Nxe4 17.
Bb4 Rfe8 18. c5 Qc7 19. Bd2 f6 20. b4 Kh8 21. Rc1 e5 22. Be3 Qc6 23. Qb3 g5 24.
dxe5 fxe5 25. Nxg5 Nxg5 26. Bxg5 Rg8 27. Bh4 d4 28. Bg3 Rce8 29. b5 Qf6 30. Qd5
Rg7 31. c6 bxc6 32. Rxc6 Qg5 33. f4 1-0

[Event "Dosquebrad op"]
[Site "Dosquebrad"]
[Date "2013.06.20"]
[Round "2"]
[White "Dominguez Rincon, Miller"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C53"]
[WhiteElo "2037"]
[BlackElo "2349"]
[PlyCount "74"]
[EventDate "2013.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Qe7 5. O-O d6 6. Re1 ({RR} 6. Bb3 Nf6 7.
d3 h6 8. h3 g5 9. Nh2 Rg8 10. g4 h5 11. Kg2 hxg4 12. hxg4 Qf8 13. Rh1 Rh8 14.
Nd2 Bd7 15. Ndf1 Qh6 16. Qf3 Bxg4 17. Qg3 Bh3+ 18. Kg1 Qh5 19. Bxg5 Rg8 20. Nf3
Ng4 {Richardt,A (1398)-Moeller,H (1422) Oberhof 2013 1-0 (79)}) 6... a6 ({RR}
6... Nf6 7. d3 h6 8. b4 Bb6 9. a4 a6 10. Ba3 g5 11. Nbd2 Ng4 12. Re2 Qf6 13. b5
Ne7 14. h3 h5 15. d4 Nh6 16. Nf1 g4 17. dxe5 dxe5 18. Rd2 O-O 19. N3h2 Re8 20.
a5 Ba7 21. b6 {Renner,C (2420)-Nemeth,M (2454) Austria 2011 1-0 (39)}) 7. d3
Nf6 8. b4 $146 ({RR} 8. Nbd2 O-O 9. Nf1 Na5 10. b4 Nxc4 11. bxc5 Na5 12. cxd6
cxd6 13. Ng3 Ne8 14. Ba3 Bg4 15. h3 Bxf3 16. Qxf3 Qe6 17. Qe3 Nc6 18. d4 Na5
19. Bc1 Nc4 20. Qd3 b5 21. a4 Nc7 22. Re2 d5 {Einarsson,H (2225)-Davidovic,A
(2400) Dortmund 1987 0-1 (53)}) ({RR} 8. Bb3 h6 9. Nbd2 Ng4 10. Re2 O-O 11. Nf1
Kh7 12. Ng3 Nf6 13. Re1 g6 14. Qe2 Bd7 15. h3 Bb6 16. Bd2 Ng8 17. Rad1 Rae8 18.
Bc1 f5 19. exf5 gxf5 20. d4 e4 21. Qd2 Qd8 22. Bxg8+ Kxg8 {Prevot,E (2208)
-Walther,H (2232) Dresden 2000 1-0 (31)}) 8... Ba7 9. a4 Be6 10. Bxe6 fxe6 11.
Be3 Bxe3 12. Rxe3 O-O 13. Nbd2 Nd7 14. Qb3 Qf6 15. Ra2 Rf7 16. Nf1 Ne7 17. c4
a5 18. b5 c5 19. bxc6 bxc6 20. Qb7 Rd8 21. Qc7 Nc8 22. Qxa5 Nc5 23. Qc3 Rb7 24.
N1d2 Ne7 25. h3 Rdb8 26. Re1 Na6 27. d4 exd4 28. Qxd4 e5 29. Qc3 h6 30. Re3 c5
31. Kh2 Nc6 32. Re1 Nd4 33. Nxd4 cxd4 34. Qg3 Nc5 35. Ra3 Rb2 36. Rf3 Qe6 37.
Nb1 Rxb1 0-1

[Event "Dosquebrad op"]
[Site "Dosquebrad"]
[Date "2013.06.20"]
[Round "3"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Franco Valencia, Angela Maria"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2349"]
[BlackElo "2165"]
[PlyCount "60"]
[EventDate "2013.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]

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 Bg4 10. b4 a6 ({RR} 10... Nd5 11. Nxd5 Qxd5 12. Bb2 Qb5 13. Bc3 a6
14. Rb1 Bxf3 15. Bxf3 Nd4 16. Bg2 Bf6 17. e3 Nf5 18. a4 Qb6 19. b5 a5 20. Qf3
Nd6 21. Rfc1 Rfe8 22. Qe2 Rad8 23. Bb2 Re7 24. Ba3 Qa7 25. Rc2 {Pasiev,R (2376)
-Kim,G (2169) Olomouc 2013 1-0 (51)}) 11. Ne4 ({RR} 11. Bb2 Kh8 12. Ne4 f5 13.
Nc5 Bxc5 14. bxc5 Nd7 15. Rc1 Qe7 16. d4 Rad8 17. dxe5 Nxc5 18. Qc2 Nd7 19.
Rfe1 f4 20. Rcd1 Rde8 21. Qc1 fxg3 22. hxg3 Ndxe5 23. Nxe5 Nxe5 24. Bxb7 c6 25.
Bxe5 Qxe5 {Timman,J (2620)-Sax,G (2560) Wijk aan Zee 1981 1/2-1/2 (49)}) 11...
Nd7 $146 ({RR} 11... Re8 12. Bb2 f5 13. Nc5 Bxc5 14. bxc5 Nd7 15. Qc2 Rb8 16.
e4 Qe7 17. Rac1 Kh8 18. h3 fxe4 19. dxe4 Bh5 20. Nh4 Nf6 21. Nf5 Qe6 22. g4 Bg6
23. Rfd1 Rbd8 24. Rxd8 Rxd8 25. Rd1 Rd7 26. Bf3 {Vargas Huamani,J (1912)
-Gonzalez Mateos,R (2186) Madrid 2011 0-1 (39)}) 12. h3 Bh5 13. g4 Bg6 14. Ng3
Nb6 15. e4 Qd7 16. Qc2 f6 17. Be3 a5 18. b5 Nd4 19. Bxd4 exd4 20. a4 Rac8 21.
Ne2 c5 22. bxc6 Rxc6 23. Qb3+ Bf7 24. Qb5 Bb4 25. e5 Qc7 26. Rfc1 Be8 27. Rxc6
bxc6 28. Rc1 cxb5 29. Rxc7 bxa4 30. Nexd4 fxe5 0-1

[Event "Dosquebrad op"]
[Site "Dosquebrad"]
[Date "2013.06.21"]
[Round "4"]
[White "Zabala, Fidel"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "1990"]
[BlackElo "2349"]
[PlyCount "65"]
[EventDate "2013.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15.
Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. Qf1 Qh5 19. Qg2 Rfe8 20. Bxd5 cxd5 21. f3
({RR} 21. h4 Qf5 22. a4 h6 23. axb5 axb5 24. Ra5 Rb8 25. f3 Bh3 26. g4 Qd3 27.
Qe2 Qxe2 28. Rxe2 Rbe8 29. Rxb5 Rxe3 30. Rxe3 Rxe3 31. Kf2 Re8 32. Rxd5 Bf4 33.
Ne4 Rb8 34. b4 Ra8 35. Ra5 Rxa5 {Jachimiak,W-Sawicki,W (1797) Warszawa 2013
0-1 (48)}) 21... Bh3 22. Qf2 Qg6 $146 ({RR} 22... f5 23. f4 Bg4 24. Qg2 Rxe3
25. Rxe3 Rxe3 26. Qxd5+ Qf7 27. Qxd6 Qb7 28. d5 Qa7 29. Kh1 Re2 30. Rf1 Bh3 31.
Rg1 Bg2+ {0-1 (31) Norton,G-Drkulec,V London,Canada 1993}) 23. Nb3 h5 24. Bd2
Qc2 25. Rxe6 Rxe6 26. Be3 Qd3 27. Re1 h4 28. Nc5 hxg3 29. Nxd3 gxf2+ 30. Kxf2
a5 31. Bf4 Bf5 32. Rxe6 fxe6 33. Bxd6 1/2-1/2

[Event "Dosquebrad op"]
[Site "Dosquebrad"]
[Date "2013.06.21"]
[Round "5"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Verbel, Jose"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "2349"]
[BlackElo "1931"]
[PlyCount "65"]
[EventDate "2013.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15.
Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. Qf1 Qh5 19. Qg2 Rfe8 20. Bxd5 cxd5 21. f3
({RR} 21. h4 Qf5 22. a4 h6 23. axb5 axb5 24. Ra5 Rb8 25. f3 Bh3 26. g4 Qd3 27.
Qe2 Qxe2 28. Rxe2 Rbe8 29. Rxb5 Rxe3 30. Rxe3 Rxe3 31. Kf2 Re8 32. Rxd5 Bf4 33.
Ne4 Rb8 34. b4 Ra8 35. Ra5 Rxa5 {Jachimiak,W-Sawicki,W (1797) Warszawa 2013
0-1 (48)}) 21... Bh3 22. Qf2 Qg6 $146 ({RR} 22... f5 23. f4 Bg4 24. Qg2 Rxe3
25. Rxe3 Rxe3 26. Qxd5+ Qf7 27. Qxd6 Qb7 28. d5 Qa7 29. Kh1 Re2 30. Rf1 Bh3 31.
Rg1 Bg2+ {0-1 (31) Norton,G-Drkulec,V London,Canada 1993}) 23. Nb3 h5 24. Bd2
Qc2 25. Rxe6 Rxe6 26. Be3 Qd3 27. Re1 h4 28. Nc5 hxg3 29. Nxd3 gxf2+ 30. Kxf2
a5 31. Bf4 Bf5 32. Rxe6 fxe6 33. Bxd6 1-0

[Event "Dosquebrad op"]
[Site "Dosquebrad"]
[Date "2013.06.22"]
[Round "6"]
[White "Ardila, Oscar Humberto"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C79"]
[WhiteElo "2055"]
[BlackElo "2349"]
[PlyCount "65"]
[EventDate "2013.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15.
Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. Qf1 Qh5 19. Qg2 Rfe8 20. Bxd5 cxd5 21. f3
({RR} 21. h4 Qf5 22. a4 h6 23. axb5 axb5 24. Ra5 Rb8 25. f3 Bh3 26. g4 Qd3 27.
Qe2 Qxe2 28. Rxe2 Rbe8 29. Rxb5 Rxe3 30. Rxe3 Rxe3 31. Kf2 Re8 32. Rxd5 Bf4 33.
Ne4 Rb8 34. b4 Ra8 35. Ra5 Rxa5 {Jachimiak,W-Sawicki,W (1797) Warszawa 2013
0-1 (48)}) 21... Bh3 22. Qf2 Qg6 $146 ({RR} 22... f5 23. f4 Bg4 24. Qg2 Rxe3
25. Rxe3 Rxe3 26. Qxd5+ Qf7 27. Qxd6 Qb7 28. d5 Qa7 29. Kh1 Re2 30. Rf1 Bh3 31.
Rg1 Bg2+ {0-1 (31) Norton,G-Drkulec,V London,Canada 1993}) 23. Nb3 h5 24. Bd2
Qc2 25. Rxe6 Rxe6 26. Be3 Qd3 27. Re1 h4 28. Nc5 hxg3 29. Nxd3 gxf2+ 30. Kxf2
a5 31. Bf4 Bf5 32. Rxe6 fxe6 33. Bxd6 0-1

[Event "Latin Cup-A 3rd"]
[Site "Cali"]
[Date "2012.10.05"]
[Round "3"]
[White "Pelaez, Hernan"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "A26"]
[WhiteElo "1873"]
[BlackElo "2359"]
[PlyCount "29"]
[EventDate "2012.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]

1. c4 e5 2. Nc3 Nc6 3. d3 g6 4. Nf3 Bg7 5. g3 f5 6. Bg2 d6 7. Bg5 Nce7 ({RR}
7... Nge7 8. Nd5 Be6 9. Qa4 O-O 10. h4 Qe8 11. Nxc7 Qd7 12. Nxa8 Rxa8 13. Bxe7
Qxe7 14. Ng5 Bd7 15. Bd5+ Kf8 16. Nxh7+ Ke8 17. h5 g5 18. Qc2 Bh6 19. Bg8 Qg7
20. f4 Ke7 21. fxg5 {0-1 (21) Nouali,D (1722)-Ghanou,T (1757) Sidi Bel Abbes
2013}) 8. Nd5 ({RR} 8. e4 h6 9. Bd2 Nf6 10. Qc2 Be6 11. Nd5 O-O 12. Nxe7+ Qxe7
13. exf5 gxf5 14. Nh4 Qf7 15. O-O d5 16. b3 c6 17. Rae1 e4 18. cxd5 cxd5 19. f3
Rac8 20. Qb1 exd3 21. Qxd3 Nd7 22. Rc1 Nc5 {Pcola,P (2420)-Oral,T (2455)
Pardubice 1998 1-0 (33)}) 8... c6 $146 ({RR} 8... h6 9. Nxe7 Nxe7 10. Bxe7 Qxe7
11. Nh4 Qf6 12. Qa4+ Bd7 13. Qc2 g5 14. Nf3 Bc6 15. O-O-O O-O 16. Ne1 e4 17. d4
Rae8 18. e3 a5 19. Qd2 b6 20. Nc2 d5 21. Na3 Qe7 22. Bf1 Ba4 23. Nc2 {Groth,
K-Heinatz,T (2380) Germany 1997 0-1 (70)}) 9. Nxe7 Nxe7 10. Qc2 h6 11. Bd2 O-O
12. O-O g5 13. Bc3 Ng6 14. e3 Be6 15. Rab1 0-1

[Event "Latin Cup-A 3rd"]
[Site "Cali"]
[Date "2012.10.06"]
[Round "4"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Pardo, Alejandro"]
[Result "1-0"]
[ECO "D63"]
[WhiteElo "2359"]
[BlackElo "2181"]
[PlyCount "37"]
[EventDate "2012.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]

1. d4 Nf6 2. Bg5 d5 3. c4 e6 4. Nc3 Be7 5. e3 O-O 6. Nf3 Nbd7 7. Rc1 a6 8. cxd5
exd5 9. Bd3 Re8 10. O-O c6 11. Bf4 Nh5 ({RR} 11... Nf8 12. h3 Ng6 13. Bg3 Bd6
14. Bxd6 Qxd6 15. Na4 Ne4 16. Nd2 Nxd2 17. Qxd2 Nh4 18. Qc2 Qh6 19. Qe2 Nxg2
20. Kxg2 Bxh3+ 21. Kg3 Re6 22. f4 Rae8 23. Rf3 f5 24. Qh2 Rxe3 25. Rcf1 Qg6+
26. Kf2 {Hertneck,G (2560)-Khalifman,A (2635) Germany 1992 0-1 (56)}) ({RR}
11... Nf8 12. Ne5 Ng6 13. Bg3 Bd6 14. f4 Bxe5 15. fxe5 Bg4 16. Qb3 Nh5 17. Qxb7
Be6 18. Bf2 Qg5 19. Qxc6 Rec8 20. Qa4 Nhf4 21. exf4 Nxf4 22. Bxh7+ Kxh7 23. Bg3
Nh5 24. Qc2+ g6 25. Qf2 Rab8 26. Bh4 {Emodi,B (2363)-Janoshalmi,A (2265)
Hungary 2013 1-0 (32)}) 12. Nxd5 Nxf4 13. Nxf4 Nf6 14. Qb3 $146 ({RR} 14. Ne2
Be6 15. Qc2 Bxa2 16. b3 {1-0 (16) Starcic,T (2151)-Ursic,M Kranj 1999}) 14...
Bd6 15. Bc4 Qc7 16. Ne2 Bg4 17. Ng3 Ne4 18. Bxf7+ Kh8 19. Bxe8 1-0

[Event "Latin Cup-A 3rd"]
[Site "Cali"]
[Date "2012.10.06"]
[Round "5"]
[White "Saladen Dulce, Rafael"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C73"]
[WhiteElo "2212"]
[BlackElo "2359"]
[PlyCount "53"]
[EventDate "2012.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. Bxc6+ bxc6 6. d4 f6 7. h3 g6 ({RR}
7... Ne7 8. c4 Ng6 9. Nc3 Be7 10. O-O O-O 11. Re1 a5 12. Be3 Qe8 13. Rc1 a4 14.
c5 a3 15. b4 dxc5 16. bxc5 exd4 17. Nxd4 Bxc5 18. Ncb5 cxb5 19. Rxc5 Qxe4 20.
f3 Qb7 21. Qb3+ Kh8 22. Rec1 {Chuprov,D (2534)-Demchenko,A (2427) Moscow 2007
1-0 (34)}) ({RR} 7... Ne7 8. c4 Ng6 9. Nc3 Be7 10. Be3 Bd7 11. Qd2 Qb8 12. O-O
O-O 13. Rfd1 Be6 14. d5 cxd5 15. Nxd5 Rd8 16. Qa5 Rd7 17. Nd2 Bd8 18. Qa4 Rf7
19. Nb3 Bd7 20. Qa3 f5 21. f3 c6 22. Nc3 {Libersan,T (2026)-Masse,H (2264)
Montreal 2013 1-0 (42)}) 8. Be3 Nh6 9. dxe5 fxe5 10. Bg5 $146 ({RR} 10. c4 Nf7
11. Nc3 Be6 12. b3 Bg7 13. Qd2 O-O 14. h4 h6 15. Ng1 Qe7 16. Nge2 Rfd8 17. Qc2
Rdb8 18. h5 g5 19. Rd1 Nd8 20. Ng3 Qf7 21. Nf5 c5 22. g4 Nc6 23. Rh3 Nd4 24.
Qc1 Kh7 {Mahdi,K (2348)-Rolletschek,H (2340) Mureck 2001 1-0 (102)}) 10... Qd7
11. Qd2 Nf7 12. Be3 Bg7 13. Nc3 O-O 14. O-O-O a5 15. h4 h5 16. Nh2 Qe7 17. f3
Be6 18. g4 Kh7 19. gxh5 gxh5 20. Rdg1 Rg8 21. Nf1 Qf6 22. Bg5 Qxf3 23. Nh2 Nxg5
24. hxg5 Qf6 25. gxf6 Bh6 26. Qf4 exf4 27. Nf3 0-1

[Event "Latin Cup-A 3rd"]
[Site "Cali"]
[Date "2012.10.07"]
[Round "6"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Barrientos Chavarriaga, Sergio"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "2359"]
[BlackElo "2454"]
[PlyCount "35"]
[EventDate "2012.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. g3 O-O 5. Bg2 d5 6. Qb3 Nc6 ({RR} 6... a5 7.
O-O Nc6 8. d4 a4 9. Qc2 dxc4 10. Nb5 Na5 11. Qxa4 Be7 12. Bd2 c6 13. Nc3 b5 14.
Qc2 Qb6 15. e4 b4 16. e5 Nd5 17. Ne4 h6 18. Rfc1 Ba6 19. Bf1 Rfd8 20. Be1 Bb5
21. Ned2 {Haessel,D (2209)-Hansen,E (2412) Calgary 2011 0-1}) 7. d4 Ne4 8. Qc2
Bxc3+ $146 ({RR} 8... Nd6 9. cxd5 exd5 10. O-O Bf5 11. Qb3 {1/2-1/2 (11)
Kramnik,V (2775)-Khalifman,A (2650) Germany 1996}) 9. bxc3 Na5 10. Ne5 f6 11.
cxd5 exd5 12. Nd3 Re8 13. O-O c6 14. f3 Nd6 15. Nf2 Bf5 16. e4 Bg6 17. Bf4 Nac4
18. Rae1 1/2-1/2

[Event "Latin Cup-A 3rd"]
[Site "Cali"]
[Date "2012.10.07"]
[Round "7"]
[White "Contreras, Henry Esteban"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2220"]
[BlackElo "2359"]
[PlyCount "67"]
[EventDate "2012.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8.
c4 Ba6 9. b3 g5 10. g3 Bg7 11. Bb2 O-O 12. h4 Rae8 13. hxg5 Qxg5 14. Rh5 Qg6
15. Qf3 $146 ({RR} 15. Nc3 f5 16. Nxd5 cxd5 17. f4 dxc4 18. bxc4 h6 19. O-O-O
d6 20. Bg2 Kh7 21. g4 Qxg4 22. Qxg4 fxg4 23. Be4+ Kh8 24. exd6 Bxb2+ 25. Kxb2
Rxe4 26. d7 Kg7 27. d8=Q Rxd8 28. Rxd8 Rxf4 29. Ra5 Bxc4 {Wieczorek,O (2374)
-Biolek,R (2409) Olomouc 2011 1/2-1/2 (33)}) 15... Nb4 16. Rf5 d5 17. Na3 Bc8
18. g4 h5 19. Bh3 hxg4 20. Bxg4 Bxf5 21. Bxf5 Qg5 22. Qh3 Bh6 23. Kf1 Qg7 24.
Re1 Re6 25. Bxe6 fxe6 26. Qxe6+ Kh7 27. Qh3 Qg6 28. Re3 Nc2 29. Rg3 Qf7 30. Qh2
Qf4 31. Nxc2 Qd2 32. e6 Rg8 33. Rxg8 Kxg8 34. Ne1 1-0

[Event "Latin Cup-A 3rd"]
[Site "Cali"]
[Date "2012.10.08"]
[Round "8"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Uribe, Mauricio"]
[Result "0-1"]
[ECO "A17"]
[WhiteElo "2359"]
[BlackElo "2343"]
[PlyCount "52"]
[EventDate "2012.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 Bb4 4. g4 O-O 5. g5 Ne8 6. Qc2 d5 7. e3 Nc6 8. d4 e5
9. Nxe5 Nxe5 10. dxe5 Qxg5 $146 ({RR} 10... d4 11. exd4 Qxd4 12. Be3 Qxe5 13.
O-O-O Bxc3 14. Qxc3 Qxc3+ 15. bxc3 Nd6 16. c5 Nf5 17. Bf4 Be6 18. Bh3 c6 19.
Rhe1 Rfe8 20. Re5 g6 21. Bxf5 Bxf5 22. Rd6 Kf8 23. h4 Rad8 24. Kd2 Rxd6+ 25.
cxd6 {Grachev,B (2506)-Riazantsev,A (2576) Sochi 2004 1/2-1/2 (114)}) ({RR}
10... d4 11. a3 dxc3 12. axb4 cxb2 13. Bxb2 Qxg5 14. Bd3 Qh5 15. Rg1 f6 16.
exf6 Nxf6 17. Ra5 Qh6 18. Rag5 Rf7 19. Be5 Be6 20. Bf4 Nh5 21. Bxh7+ Qxh7 22.
Qxh7+ Kxh7 23. Rxh5+ Kg8 24. Be5 Rd8 25. Rhg5 {Cuenca Jimenez,J (2453)-James,D
(2110) Malaga 2010 1-0 (41)}) 11. f4 Qh5 12. cxd5 f6 13. exf6 Nxf6 14. Bc4 Bf5
15. Qe2 Bg4 16. Qc2 Bf3 17. Rg1 Ne4 18. a3 Bxc3+ 19. bxc3 Qh4+ 20. Kf1 Rae8 21.
d6+ Kh8 22. dxc7 Qh3+ 23. Ke1 Rxf4 24. c8=Q Qxc8 25. exf4 Nd2+ 26. Kxd2 Qxc4
0-1

[Event "Latin Cup-A 3rd"]
[Site "Cali"]
[Date "2012.10.09"]
[Round "9"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Avila, Pedro Andres"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2359"]
[BlackElo "2145"]
[PlyCount "70"]
[EventDate "2012.10.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Be7 5. Bf4 c6 6. e3 Nbd7 7. cxd5 exd5 8.
Bd3 Nf8 9. h3 Ng6 10. Bh2 O-O 11. Qc2 ({RR} 11. O-O Re8 12. Ne5 Nxe5 13. Bxe5
Bd6 14. Bxd6 Qxd6 15. Qc2 g6 16. Rfe1 Bd7 17. b4 Rac8 18. Qb2 Nh5 19. e4 Nf4
20. Bf1 Qf6 21. Rad1 Re7 22. Re3 Rce8 23. e5 Qg5 24. Rg3 Qh4 25. Ne2 Nxe2+ {
Smyslov,V (2595)-Huebner,R (2625) Velden 1983 1/2-1/2 (47)}) 11... Re8 12. Ne5
({RR} 12. O-O-O a5 13. Kb1 a4 14. Nxa4 Qa5 15. b3 b5 16. Nc5 Bxc5 17. dxc5 Ne4
18. Bxe4 Rxe4 19. Nd4 Rxd4 20. Rxd4 Bf5 21. e4 Bxe4 22. Rxe4 dxe4 23. Bd6 Nh4
24. Be5 Nf5 25. Rd1 Ne7 26. Bc3 Qa7 {Berkes,F (2702)-Nguyen,D (2492) Ho Chi
Minh City 2013 1/2-1/2 (39)}) 12... c5 $146 ({RR} 12... Nd7 13. O-O Ndxe5 14.
dxe5 Bb4 15. f4 Qe7 16. Rae1 Bd7 17. Bg3 Rad8 18. h4 Bg4 19. a3 Bxc3 20. Qxc3
c5 21. h5 Nf8 22. h6 d4 23. exd4 cxd4 24. Qd2 gxh6 25. f5 Qg5 26. Bf4 Qh5 27.
Bxh6 {Fang,J (2320)-Storch,L Philadelphia 1998 1/2-1/2 (41)}) ({RR} 12... Bd6
13. f4 c5 14. O-O a6 15. Qf2 b5 16. Rad1 cxd4 17. exd4 b4 18. Ne2 Ne4 19. Bxe4
dxe4 20. f5 Nf8 21. Qe3 Qb6 22. Ng4 Bxh2+ 23. Kxh2 h5 24. Nf2 Bxf5 25. Nh1 Bg6
26. Nf4 Rad8 27. Ng3 {Langeweg,K (2415)-Delgado,E Zaragoza 1991 1/2-1/2 (42)})
13. O-O c4 14. Be2 Nh4 15. g4 Bb4 16. Bg3 Ng6 17. Bf3 Be6 18. Bg2 Bxc3 19. bxc3
Nd7 20. f4 Ngxe5 21. dxe5 Nc5 22. f5 Bc8 23. Rad1 Nd3 24. Rxd3 cxd3 25. Qxd3
Bd7 26. Bxd5 Bc6 27. c4 Qa5 28. e6 fxe6 29. fxe6 Bxd5 30. cxd5 Qxa2 31. e4 a5
32. Bd6 a4 33. Qf3 Qb2 34. Qf7+ Kh8 35. e7 Qb6+ 0-1

[Event "Medellin IRT op"]
[Site "Medellin"]
[Date "2012.08.05"]
[Round "4"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Martinez, Julian"]
[Result "1-0"]
[ECO "D61"]
[WhiteElo "2375"]
[BlackElo "2166"]
[PlyCount "69"]
[EventDate "2012.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 c6 6. Nf3 O-O 7. Qc2 h6 8. Bf4
Nbd7 9. g4 ({RR} 9. a3 b6 10. Bd3 Bb7 11. Rd1 Re8 12. O-O Nf8 13. Qe2 Nh5 14.
Be5 f6 15. Bg3 Nxg3 16. hxg3 Rc8 17. Rfe1 Qc7 18. e4 dxc4 19. Bxc4 b5 20. Bb3
b4 21. axb4 Bxb4 22. Bc4 Rcd8 23. Qc2 Kh8 {Dao,T (2512)-Gunbayar,M (2334)
Tagaytay City 2011 1/2-1/2 (62)}) ({RR} 9. Bd3 dxc4 10. Bxc4 b5 11. Bd3 Bb7 12.
O-O b4 13. Ne2 c5 14. Ne5 Rc8 15. Qa4 Nxe5 16. Bxe5 {1/2-1/2 (16) Vasquez,W
(1792)-Morantes Maldonado,B (1994) Duitama 2013}) 9... Re8 $146 ({RR} 9... Qa5
10. g5 Ne4 11. gxh6 g6 12. Rg1 Bb4 13. Nd2 e5 14. dxe5 Ndc5 15. Ndxe4 dxe4 16.
O-O-O Bf5 17. a3 Bxc3 18. Qxc3 Qxc3+ 19. bxc3 Rfe8 20. h4 Nd7 21. h5 Nxe5 22.
hxg6 fxg6 23. Rd6 Kh7 24. Be2 {Trmal,J (2255)-Zigo,V (2285) Czechia 1997 1/2-1/
2 (81)}) ({RR} 9... b6 10. g5 hxg5 11. Nxg5 Re8 12. O-O-O Nf8 13. h4 Nh5 14.
Bd3 f5 15. Be5 Bf6 16. Be2 Bxe5 17. Bxh5 Bf6 18. Bf7+ Kh8 19. Qe2 g6 20. Bxg6
Bxg5 21. Qh5+ Kg7 22. Bxe8 Ba6 23. Qf7+ {1-0 (23) Jaunooby,A (2178)-Phillips,W
(1950) London 2012}) 10. g5 hxg5 11. Nxg5 Nf8 12. h4 dxc4 13. Bxc4 Nd5 14.
O-O-O Qa5 15. Kb1 b5 16. Nxd5 cxd5 17. Bd3 f5 18. h5 Bxg5 19. Bxg5 Ba6 20. Qe2
Rac8 21. Rdg1 Kh7 22. f3 Qc7 23. Bf4 Qb7 24. Be5 Re7 25. e4 Rf7 26. Rg6 Kg8 27.
exf5 exf5 28. a4 Rc4 29. Qg2 bxa4 30. Bxc4 Bxc4 31. Rg1 Nxg6 32. hxg6 Rf6 33.
Bxf6 Qb3 34. Qh2 Qa2+ 35. Kc1 1-0

[Event "Medellin IRT op"]
[Site "Medellin"]
[Date "2012.08.05"]
[Round "5"]
[White "Tovio, Israel"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2267"]
[BlackElo "2375"]
[PlyCount "108"]
[EventDate "2012.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Qe7 5. b4 Bb6 6. a4 a6 7. O-O Nf6 8. d3 d6
9. Be3 Bxe3 10. fxe3 Be6 11. Bxe6 fxe6 12. Nbd2 O-O 13. Qe1 $146 ({RR} 13. Qb3
Kh8 14. d4 exd4 15. cxd4 d5 16. e5 Ng4 17. b5 Nb4 18. a5 axb5 19. h3 Nh6 20.
Rfb1 c5 21. dxc5 Na6 22. Qxb5 Nxc5 23. Qb4 Nf5 24. Nb3 Rac8 25. Nxc5 Rxc5 26.
Qxb7 Rc1+ {0-1 (26) Bianchi,G (2415)-Borghi,H (2320) Buenos Aires 1990}) ({RR}
13. d4 exd4 14. exd4 e5 15. Qb3+ Kh8 16. d5 Nb8 17. Nh4 g6 18. c4 Nbd7 19. Qh3
Qg7 20. Nhf3 Nh5 21. g3 h6 22. Nh4 Ndf6 23. Rf2 Kh7 24. Raf1 a5 25. b5 b6 26.
Ng2 Kg8 27. Ne3 Qd7 {Hernandez,A (2269)-Ortiz Aguirre,N (2071) Cali 2001 1-0
(36)}) 13... Nd8 14. Qg3 Nf7 15. d4 exd4 16. exd4 e5 17. Nh4 Nh6 18. dxe5 Qxe5
19. Qxe5 dxe5 20. Nf5 Nxf5 21. exf5 Rad8 22. Nf3 Nd5 23. Ng5 Ne3 24. Rf3 Rxf5
25. Ne6 Rxf3 26. Nxd8 Rf4 27. Nxb7 Rc4 28. a5 Nc2 29. Ra2 Rxc3 30. b5 Nb4 31.
Ra4 Rc1+ 32. Kf2 Rc4 33. Rxb4 Rxb4 34. bxa6 Rf4+ 35. Ke3 Rf8 36. Ke4 Re8 37.
Nc5 c6 38. a7 Kf7 39. Nd7 Ra8 40. Nxe5+ Ke6 41. Nxc6 Kd6 42. Nd4 g6 43. g4 Kd7
44. Kd5 Rxa7 45. Nb3 Kc7 46. h4 Rb7 47. Nd4 Rb4 48. Kc5 Ra4 49. Ne6+ Kb7 50.
Kb5 Rxg4 51. a6+ Ka7 52. Nd8 Rxh4 53. Nc6+ Ka8 54. Kb6 Re4 0-1

[Event "Medellin IRT op"]
[Site "Medellin"]
[Date "2012.08.06"]
[Round "6"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Saladen Dulce, Rafael"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "2375"]
[BlackElo "2211"]
[PlyCount "83"]
[EventDate "2012.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. dxc3 Qxd1+ 7. Kxd1 Nd7
8. Be3 ({RR} 8. Bc4 Bg7 9. Kc2 Nc5 10. Re1 Be6 11. Bxe6 Nxe6 12. Be3 O-O-O 13.
a4 h5 14. a5 a6 15. h4 Rd6 16. Rad1 Rhd8 {1/2-1/2 (16) Kuzubov,Y (2559)
-Areshchenko,A (2640) Poltava 2006}) 8... Bg7 ({RR} 8... e5 9. Nd2 Bc5 10. Bxc5
Nxc5 11. b4 Ne6 12. Nc4 f6 13. Kc2 Ke7 14. Ne3 c6 15. Bc4 a5 16. b5 Nc5 17. f3
f5 18. exf5 gxf5 19. Rhe1 f4 20. Nd1 Bf5+ 21. Kb2 Kf6 22. Nf2 cxb5 23. Bxb5 {
Santanu,B (2104)-Shivananda,B (2384) Chennai 2013 0-1}) 9. Nd2 O-O $146 ({RR}
9... b6 10. Kc2 Bb7 11. f3 O-O-O 12. b4 f5 13. exf5 gxf5 14. Bd3 e6 15. Rad1
Nf6 16. Nb3 Rhg8 17. Rhe1 Bh8 18. Bf1 Rxd1 19. Rxd1 Nd5 20. Bd2 Bxc3 21. Bxc3
Ne3+ 22. Kc1 Nxf1 23. Rxf1 Rxg2 24. Nd4 {Kleissl,H (2281)-Groszpeter,A (2553)
Austria 2009 1/2-1/2}) 10. Kc2 a5 11. a4 b6 12. Bb5 Ne5 13. h3 Bd7 14. Rad1
Bxb5 15. axb5 f5 16. Bf4 Nf7 17. Bxc7 Rfc8 18. Bxb6 Rab8 19. Bxa5 Rxb5 20. Ra1
Nd6 21. Ra4 Bh6 22. Nb3 Nxe4 23. Re1 e5 24. Rb4 Rxb4 25. Bxb4 Bg7 26. f3 Ng5
27. Nc5 h5 28. b3 h4 29. c4 Kf7 30. Nd7 e4 31. fxe4 Nxe4 32. Nb6 Rc6 33. Na4 g5
34. Nc3 Ra6 35. Nxe4 Ra2+ 36. Kd3 fxe4+ 37. Rxe4 Rxg2 38. c5 Bf8 39. c6 Bxb4
40. c7 Rd2+ 41. Ke3 Rc2 42. Rc4 1-0

[Event "Medellin IRT op"]
[Site "Medellin"]
[Date "2012.08.06"]
[Round "7"]
[White "Martinez Romero, Martin"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "2338"]
[BlackElo "2375"]
[PlyCount "63"]
[EventDate "2012.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Bg4 7. b3 ({RR} 7. h3
Bd7 8. d4 Nf6 9. d5 Ne7 10. e4 a6 11. a4 O-O 12. g4 Ne8 13. Ng3 c6 14. Bg5 h6
15. Be3 cxd5 16. cxd5 f5 17. gxf5 gxf5 18. exf5 Nxf5 19. Nxf5 Bxf5 20. Qh5 Qf6
21. Rg1 Rc8 {Zueger,B (2445)-Roos,L (2360) Cannes 1998 1-0 (39)}) ({RR} 7. h3
Be6 8. Nd5 Qc8 9. d4 Nge7 10. Nxe7 Nxe7 11. d5 Bd7 12. e4 O-O 13. g4 c6 14. Nc3
cxd5 15. cxd5 f5 16. Bg5 Qe8 17. O-O h6 18. Be3 Kh7 19. f3 Bf6 20. Qd2 Ng8 21.
Rac1 Qd8 {Mendoza Velazquez,L (2033)-Felix Vega,A (1826) Duran 2011 1-0 (60)})
7... Nge7 $146 ({RR} 7... Qd7 8. O-O Nge7 9. Bb2 O-O-O 10. f3 Bh3 11. d4 Bxg2
12. Kxg2 Nf5 13. Nd5 h5 14. Qd2 h4 15. g4 h3+ 16. Kh1 Nh4 17. b4 e4 18. fxe4
Qxg4 19. Ng3 Qd7 20. b5 Nb8 21. a4 f5 22. a5 {Dobbs,E-Turner,G Detroit 1991
0-1 (39)}) 8. Bb2 Qd7 9. h3 Be6 10. d4 exd4 11. exd4 d5 12. Nf4 Nxd4 13. cxd5
Bf5 14. O-O c5 15. dxc6 Nexc6 16. Re1+ Kf8 17. Rc1 Re8 18. g4 Rxe1+ 19. Qxe1
Be6 20. Ne4 h5 21. Ba3+ Kg8 22. Nc5 Qd6 23. Ncxe6 Qxa3 24. Nxd4 Bxd4 25. Bxc6
bxc6 26. Rxc6 hxg4 27. hxg4 Rh4 28. Qe8+ Kg7 29. Ne6+ fxe6 30. Qd7+ Kh6 31.
Qxd4 Qa5 32. Qf4+ 1-0

[Event "Medellin IRT op"]
[Site "Medellin"]
[Date "2012.08.07"]
[Round "8"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Morales, Jhon Alexander"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2375"]
[BlackElo "2312"]
[PlyCount "104"]
[EventDate "2012.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]

1. c4 c5 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. d4 cxd4 7. Qxd4 d6 8. Bg5
Nbd7 9. Nc3 a6 10. Rad1 Be7 11. e4 $146 ({RR} 11. b3 O-O 12. Qh4 h6 13. Bxh6
gxh6 14. Qxh6 Nh7 15. Rd4 Kh8 16. Rg4 Rg8 17. Rxg8+ Qxg8 18. Rd1 Qg7 19. Qe3
Nhf6 20. h3 d5 21. cxd5 Bc5 22. Qf4 Nxd5 23. Nxd5 Bxd5 24. e4 Bc6 25. Qc7 Rg8 {
Snerthammer,D-Pham,T (2098) Oslo 2006 1/2-1/2 (44)}) 11... Qc7 12. Rfe1 Rd8 13.
b3 O-O 14. Bc1 Rfe8 15. Qe3 Bf8 16. Bb2 Rc8 17. h3 Qb8 18. Nd4 g6 19. Qe2 Bg7
20. Qd2 Rcd8 21. a3 Ba8 22. Qc2 Rc8 23. Qb1 Nc5 24. Ba1 Bb7 25. Rc1 Ncd7 26.
Qa2 Ne5 27. Qb1 Nc6 28. Nxc6 Bxc6 29. a4 Ba8 30. Ne2 a5 31. Rcd1 Nd7 32. Bxg7
Kxg7 33. Nd4 Nc5 34. b4 axb4 35. Qxb4 Red8 36. h4 e5 37. Nb5 Bc6 38. Bh3 Bxb5
39. cxb5 Rc7 40. a5 bxa5 41. Qxa5 Ra7 42. Qb4 Ra4 43. Qb1 Qb6 44. Rd2 Rb8 45.
Bf1 Ne6 46. Qb3 Rba8 47. Qd5 Nd4 48. Kg2 Rc8 49. Ra2 Rxa2 50. Qxa2 Rc2 51. Qb1
Qa5 52. Qd1 Qa2 0-1

[Event "Medellin IRT op"]
[Site "Medellin"]
[Date "2012.08.07"]
[Round "9"]
[White "Castaneda, Jorge Luis"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "2131"]
[BlackElo "2375"]
[PlyCount "77"]
[EventDate "2012.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]

1. d4 {Schussler} f5 2. Nf3 Nf6 3. g3 e6 4. Bg2 d5 5. c4 Bd6 6. O-O O-O 7. b3
b6 8. Bb2 ({RR} 8. Qc2 Qe7 9. Ne5 Bb7 10. Bf4 Nh5 11. Bd2 Nd7 12. Nxd7 Qxd7 13.
Nc3 c6 14. Na4 Be7 15. Rad1 Rac8 16. Nb2 Rfd8 17. Nd3 Qe8 18. a4 Nf6 19. Bf4 c5
20. dxc5 bxc5 21. Be5 Ne4 22. f3 Nf6 {Karpov,A (2730)-Karlsson,L (2520)
Haninge 1990 CBM 018 [Schussler] 1/2-1/2 (74)}) ({RR} 8. Ba3 Bb7 9. Qc1 Ne4 10.
Bxd6 cxd6 11. cxd5 exd5 12. e3 g5 13. Nc3 Nd7 14. Qb2 f4 15. exf4 gxf4 16. Ne2
Ba6 17. Nxf4 Rxf4 18. gxf4 Bxf1 19. Rxf1 Qf6 20. Qc1 Kh8 21. Kh1 Rg8 22. Bh3
Nf8 {Kamsky,G (2741)-Lou,Y (2484) Tromso 2013 1/2-1/2 (70)}) ({RR} 8. Nc3 Bb7
9. Bg5 a6 10. cxd5 exd5 11. Ne5 c6 12. Rc1 Qe8 13. Bxf6 Rxf6 14. f4 a5 15. Rf2
Na6 16. Na4 Bc7 17. e3 Rd8 18. Bf1 Nb8 19. Bd3 Qe7 20. Rg2 Bc8 21. Kh1 Rdf8 22.
Qc2 Rh6 {Martinez,P-Castro Rojas,O (2395) Vendrell 1993 0-1 (33)}) 8... Bb7 9.
Nbd2 Nbd7 $146 ({RR} 9... Qe8 10. Ne5 Nbd7 11. Rc1 Bxe5 12. dxe5 Ng4 13. Nf3 c5
14. h3 Nh6 15. e3 Nf7 16. h4 Qb8 17. Ng5 Nxg5 18. hxg5 Nxe5 19. cxd5 Rd8 20.
Qc2 Bxd5 21. e4 Bc6 22. Qc3 Rd4 23. Rfd1 Qd6 24. Rxd4 {Tasker,M-Moss,N Aintree
1998 1-0}) 10. Ne5 Qe7 11. Rc1 c5 12. cxd5 Bxd5 13. Bxd5 exd5 14. Nxd7 Qxd7 15.
Nf3 Be7 16. e3 Ne4 17. Qe2 a5 18. a4 Bf6 19. Rfd1 Rfd8 20. dxc5 bxc5 21. Bxf6
gxf6 22. Nh4 d4 23. Qf3 Qe6 24. exd4 cxd4 25. Rd3 Rab8 26. Qxf5 Ng5 27. Rc5
Rxb3 28. Rxb3 Qxb3 29. Qxf6 Qb1+ 30. Kg2 Qe4+ 31. Nf3 Nf7 32. Rg5+ Kf8 33. Qg7+
Ke8 34. Rg4 Qc6 35. Qxh7 d3 36. Rg8+ Ke7 37. Rxd8 Kxd8 38. Qxf7 d2 39. Qb3 1-0

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.04.27"]
[Round "2"]
[White "Trujillo, Fernando"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1900"]
[BlackElo "2370"]
[PlyCount "68"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. Be2 O-O 8.
O-O Bb6 9. Na3 d5 10. Nxc6 bxc6 11. exd5 cxd5 12. Bd4 $146 ({RR} 12. Nc2 Bf5
13. Bd3 Rad8 14. Nd4 Be4 15. Bxe4 dxe4 16. Qg4 Qg6 17. Qxg6 hxg6 18. Rfd1 Nf5
19. Nxf5 gxf5 20. Kf1 Bxe3 21. fxe3 c5 22. c4 a5 23. Ke2 a4 24. Rac1 Rxd1 25.
Rxd1 Rb8 26. Rd2 g5 {Sutarno-Korneev,O (2565) Jakarta 1997 0-1 (38)}) ({RR}
12. Nc2 Bb7 13. Bd4 Qd6 14. Qd3 c5 15. Be3 Bc7 16. g3 Qc6 17. Bf3 Ba6 18. c4
Qe6 19. Rfe1 Bxc4 20. Qa3 Bd6 21. Bxc5 Bxc5 22. Qxc5 Qf6 23. Qxe7 Qxf3 24. b3
Bd3 25. Re3 Qf5 26. Nd4 Qg6 {Egorova,E-Matveeva,M St Petersburg 1999 1/2-1/2
(74)}) 12... Qh4 13. Nb5 c5 14. g3 Qh6 15. Be3 Qf6 16. b4 d4 17. bxc5 dxe3 18.
cxb6 Bh3 19. bxa7 Qc6 20. f3 Rfd8 21. Qb3 Bxf1 22. Rxf1 Rd2 23. Re1 Nf5 24. c4
h5 25. a4 Qc5 26. Kf1 h4 27. g4 Ne7 28. f4 Ng6 29. Nc3 Qxa7 30. Nd5 Qd4 31. f5
Nf4 32. Qxe3 Nxe2 33. Rxe2 Rd1+ 34. Kg2 Qxg4+ 0-1

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.04.27"]
[Round "3"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Munoz, Julian Andres"]
[Result "1-0"]
[ECO "D43"]
[WhiteElo "2370"]
[BlackElo "2176"]
[PlyCount "77"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. Nf3 Nf6 2. d4 d5 3. c4 e6 4. Nc3 c6 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 g6 8. Bd3
Bg7 9. e4 dxc4 10. Bxc4 O-O 11. O-O Nd7 12. e5 Qe7 13. Re1 b5 14. Bf1 Rd8 15.
Rc1 Bb7 16. Qb3 Rab8 $146 ({RR} 16... a6 17. Ne4 c5 18. Nxc5 Nxc5 19. Rxc5 Rxd4
20. Rxb5 axb5 21. Nxd4 Bd5 22. Qxb5 Rxa2 23. Rc1 Kh7 24. Re1 Qg5 25. Qe2 Ra4
26. Qd1 Rb4 27. g3 Qe7 28. Bg2 Qc5 29. Nf3 Rxb2 30. Qd4 Qc2 31. Nh4 {Geller,J
(2496)-Galkin,A (2599) Sochi 2005 1/2-1/2 (47)}) ({RR} 16... c5 17. Nxb5 Bxf3
18. Qxf3 cxd4 19. Rc7 Qf8 20. Qb3 Nxe5 21. h3 a6 22. f4 Nd7 23. Na7 Qd6 24. Qc2
d3 25. Qc6 Qd4+ 26. Kh1 Rxa7 27. Re4 Rxc7 28. Qxc7 Qb6 {0-1 (28) Kharlamov,I
(1964)-Shutukov,S (2360) Sukhumi 2008}) 17. Ne4 c5 18. Nxc5 Nxc5 19. dxc5 Bd5
20. Qe3 Bxf3 21. gxf3 Rd5 22. f4 g5 23. c6 gxf4 24. Qxf4 Qc7 25. Qg3 Kh8 26.
Bg2 Rd2 27. Rcd1 Rbd8 28. Rxd2 Rxd2 29. Qc3 Rd8 30. Qc5 a6 31. b4 Rd2 32. a3
Rd3 33. Be4 Rd8 34. f4 Rd2 35. Qc3 Rd8 36. Kh1 Rg8 37. Rd1 Bf8 38. Qe3 a5 39.
Rd7 1-0

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.04.28"]
[Round "4"]
[White "Guerrero, Juan Carlos"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "2250"]
[BlackElo "2370"]
[PlyCount "96"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. Nc3 Be7 5. Bf4 O-O 6. e3 b6 7. cxd5 exd5 8. Rc1
c5 9. dxc5 ({RR} 9. Be2 Bb7 10. O-O Nbd7 11. Ne5 Rc8 12. Qa4 Nxe5 13. dxe5 Bc6
14. Qc2 Ne8 15. Bg4 Ra8 16. e6 Nf6 17. exf7+ Kxf7 18. Bf3 Qd7 19. Bg5 Ne4 20.
Bxe7 Qxe7 21. Rfd1 Rad8 22. b4 Nf6 23. bxc5 bxc5 {Zhou,J (2669)-Nguyen,D (2431)
Guangzhou 2010 0-1 (65)}) ({RR} 9. Ne5 Bb7 10. Be2 Nbd7 11. Bf3 Nxe5 12. dxe5
Ne4 13. Bxe4 dxe4 14. Qc2 Qd3 15. Qxd3 exd3 16. f3 Rfd8 17. Kd2 c4 18. e4 a6
19. Be3 b5 20. a3 Rac8 21. Ra1 Bc5 22. Bxc5 Rxc5 23. f4 a5 {Szneider,K (1809)
-Havelka,O (1636) Karvina 2013 0-1 (35)}) 9... bxc5 10. Be2 Bb7 11. O-O Na6
$146 ({RR} 11... Nbd7 12. Ne5 Nb6 13. Bf3 Rc8 14. Qc2 Re8 15. Bg3 Bd6 16. Nd3
Bxg3 17. hxg3 Qd7 18. Rfd1 g5 19. Nb1 c4 20. Ne1 g4 21. Be2 Ne4 22. Nc3 Ng5 23.
Rd4 f5 24. Rcd1 Ne6 25. R4d2 Qf7 26. Nb5 {Lirindzakis,T (2338)-Tsiropoulas,A
(2073) Eretria 2011 1/2-1/2 (52)}) 12. Ne5 Qb6 13. Qd2 Rfd8 14. Rfd1 Rac8 15.
a3 h6 16. Na4 Qe6 17. Qa5 Ne4 18. Bg4 f5 19. Bh5 Qf6 20. Ng6 Bd6 21. Be2 c4 22.
Bxd6 Qxd6 23. Nf4 g5 24. Nxd5 Bxd5 25. Bxc4 Nc7 26. f3 Nf6 27. Nc3 Qe5 28. Nxd5
Ncxd5 29. Bxd5+ Kh8 30. Rxc8 Rxc8 31. e4 fxe4 32. fxe4 Ng4 33. g3 Qxb2 34. Qd2
Rc2 35. Qd4+ Qxd4+ 36. Rxd4 Ne5 37. Rb4 Rd2 38. Rb8+ Kg7 39. Rb7+ Kf6 40. Rxa7
Nf3+ 41. Kf1 Nxh2+ 42. Kg1 Nf3+ 43. Kf1 Ke5 44. Rb7 h5 45. a4 h4 46. Rf7 h3 47.
Bc6 h2 48. Rh7 Nh4 0-1

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.04.28"]
[Round "5"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Mateus Urbano, Luis Alejandro"]
[Result "1/2-1/2"]
[ECO "D93"]
[WhiteElo "2370"]
[BlackElo "2246"]
[PlyCount "54"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 g6 4. e3 Bg7 5. c4 O-O 6. Nc3 c6 7. h3 a6 8. Rc1 ({
RR} 8. Be2 Nbd7 9. cxd5 Nxd5 10. Nxd5 cxd5 11. O-O Qb6 12. Qb3 Qxb3 13. axb3
Nb8 14. b4 Bf5 15. b5 a5 16. Rfc1 Rc8 17. g4 Be6 18. Ng5 Bd7 19. b3 h6 20. Nf3
Be6 {0-1 (20) Eljanov,P (2716)-Movsesian,S (2723) Moscow 2008}) ({RR} 8. Qb3
Qa5 9. c5 Ne4 10. Be2 Nd7 11. O-O e5 12. Bh2 Nxc3 13. bxc3 b6 14. cxb6 Rb8 15.
dxe5 Rxb6 16. Qc2 Re8 17. c4 Nxe5 18. Nxe5 Bxe5 19. Bxe5 Rxe5 20. cxd5 Rxd5 21.
Bc4 Re5 22. Rad1 Bf5 {Vovk,O (2132)-Nielsen,J (1844) Koge 2013 1-0 (33)}) 8...
Nbd7 9. a3 $146 ({RR} 9. Bh2 b5 10. cxb5 axb5 11. a3 Ba6 12. Bd3 Qb6 13. Ne5
Nxe5 14. Bxe5 Nd7 15. Bxg7 Kxg7 16. O-O e5 17. Be2 e4 18. Na2 Bb7 19. Nb4 f5
20. Qd2 Rf6 21. f4 exf3 22. Bxf3 Re6 23. Rc3 Rae8 {Al Dhahezi,S-Buyukasik,D
(2063) Kemer 2009 0-1 (37)}) 9... dxc4 10. Bxc4 c5 11. dxc5 Nxc5 12. Nd5 Nxd5
13. Bxd5 Ne6 14. Rc2 Nxf4 15. exf4 Qd6 16. g3 Be6 17. Bxe6 Qxe6+ 18. Qe2 Rac8
19. Qxe6 fxe6 20. Kd1 Rxc2 21. Kxc2 e5 22. Re1 exf4 23. g4 Rc8+ 24. Kb1 Rc7 25.
Re6 Rd7 26. Kc2 Rc7+ 27. Kb1 Rd7 1/2-1/2

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.04.29"]
[Round "6"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Rios, Cristian Camilo"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2370"]
[BlackElo "2384"]
[PlyCount "102"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. O-O e6 5. Re1 ({RR} 5. Na3 a6 6. b3 c5 7. c4
Qb6 8. Bb2 d5 9. Nc2 Be7 10. cxd5 Bxd5 11. Ne3 Bb7 12. d4 Nbd7 13. d5 Bxd5 14.
Nxd5 exd5 15. Nh4 Qe6 16. Qc2 O-O 17. Nf5 Rfe8 18. Bh3 Qc6 19. Rad1 Bf8 {
Markos,J (2571)-Bartel,M (2601) Prievidza 2009 0-1}) ({RR} 5. a4 b4 6. b3 Be7
7. Bb2 O-O 8. d3 c5 9. e4 d6 10. Nbd2 e5 11. Nc4 Nc6 12. Nfd2 Re8 13. Ne3 Nd4
14. f4 Bf8 15. Ndc4 Nd7 16. Bh3 Nb6 17. fxe5 Nxc4 18. bxc4 dxe5 19. Nd5 Bxd5 {
Schmittdiel,E (2439)-De Francesco,K (2246) Augsburg 2013 0-1 (39)}) 5... c5
$146 ({RR} 5... d5 6. d4 Nbd7 7. Bf4 c5 8. c3 Be7 9. Nbd2 O-O 10. Nb3 c4 11.
Nbd2 Nh5 12. e3 b4 13. Ne5 Nxf4 14. exf4 Nxe5 15. fxe5 Qb6 16. f4 Rab8 17. Re3
g6 18. h4 bxc3 19. bxc3 Bc6 20. h5 {Lie,E (2464)-Devereaux,M (2380) Tromsoe
2010 1/2-1/2 (55)}) 6. d3 d5 7. c4 a6 8. cxd5 Nxd5 9. a4 Nd7 10. e4 N5f6 11.
Qb3 c4 12. Qd1 Nc5 13. e5 Nd5 14. dxc4 bxc4 15. Bg5 Qb6 16. Qd4 h6 17. Be3 Nxe3
18. fxe3 Rd8 19. Qxc4 Bd5 20. a5 Qxb2 21. Qc3 Qb7 22. Nbd2 Be7 23. Rab1 Qa8 24.
Re2 Ne4 25. Nxe4 Bxe4 26. Rf1 Rc8 27. Qd4 O-O 28. Nd2 Bxg2 29. Rxg2 Rcd8 30.
Qg4 Qd5 31. Nc4 Qd3 32. h4 Rc8 33. Rf4 Rxc4 34. Rxc4 Qxe3+ 35. Kh2 Qxe5 36. Rd2
Qxa5 37. Rd7 Qa2+ 38. Kh3 Bf6 39. Rf4 Be5 40. Rf1 Qb3 41. Qf3 Qxf3 42. Rxf3 a5
43. Ra7 Bd4 44. Rxa5 f5 45. Kg2 e5 46. Rd5 Kh7 47. h5 Rf7 48. Ra3 g6 49. hxg6+
Kxg6 50. Ra6+ Rf6 51. Rxf6+ Kxf6 1/2-1/2

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.04.29"]
[Round "7"]
[White "Ruiz Aguilar, Pablo Alexander"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2299"]
[BlackElo "2370"]
[PlyCount "66"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d6 7. O-O Be7 8.
Nd2 O-O ({RR} 8... Bg4 9. f3 Bd7 10. b3 O-O 11. Bb2 Re8 12. Kh1 Bf8 13. Re1 Nh5
14. g3 Qg5 15. f4 Nxg3+ 16. hxg3 Qxg3 17. Qf3 Qh4+ 18. Kg2 Re6 19. Rh1 Rg6+ 20.
Kf1 Qg4 21. f5 Rg5 22. Qxg4 Rxg4 23. Kf2 {Ruiz Aguilar,P (2271)-Urrego,A (1983)
Bogota 2009 1-0}) 9. Nc4 $146 ({RR} 9. Re1 Re8 10. c3 Rb8 11. Qc2 d5 12. e5 Ng4
13. h3 Bc5 14. hxg4 Bxf2+ 15. Kxf2 Qh4+ 16. g3 Qh2+ 17. Kf3 h5 18. Bh7+ Kh8 19.
Bf5 hxg4+ 20. Bxg4 Bxg4+ 21. Kxg4 Re6 22. Qd3 Rg6+ 23. Kf4 Re8 {Koeller,O
(2345)-Kienast,J (2225) Germany 1994 0-1}) ({RR} 9. f4 Nd7 10. Nb3 a5 11. a4
Bf6 12. Bd2 Bxb2 13. Ra2 Bf6 14. Nxa5 Nc5 15. Nxc6 Qe8 16. e5 Nxd3 17. exf6
Qxc6 18. cxd3 Qd5 19. Rc2 {1/2-1/2 (19) Fernandez Garcia,J (2465)-Sisniega,M
(2525) Seville 1992}) ({RR} 9. Nf3 Bg4 10. h3 Bh5 11. Bf4 Nd7 12. Be2 Bf6 13.
c3 Re8 14. Nd2 Bg6 15. f3 Qb8 16. Nb3 a5 17. Qd2 c5 18. Rae1 a4 19. Nc1 Qb6 20.
Bc4 Rab8 21. Rf2 a3 22. b3 Qa5 23. Ne2 Nb6 {Myszka,Z (1934)-Stachanczyk,J
(2227) Ramsowo 2013 0-1 (32)}) 9... d5 10. exd5 cxd5 11. Ne5 Bd6 12. Bf4 Bb7
13. Re1 Ne4 14. Qh5 Qf6 15. Bxe4 dxe4 16. Bg3 Qe6 17. Nf3 Qc4 18. b3 Qc3 19.
Be5 Qa5 20. b4 Bxb4 21. Ng5 h6 22. Nxe4 f6 23. c3 Bd6 24. f4 Bxe4 25. Rxe4 fxe5
26. fxe5 Qxc3 27. Rd1 Qc2 28. Ree1 Rf5 29. Qg4 Qc5+ 30. Kh1 Rxe5 31. Rf1 Rh5
32. Qe6+ Kh8 33. h3 Qe5 0-1

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.04.30"]
[Round "8"]
[White "Zuluaga Mancilla, Cesar"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "2372"]
[BlackElo "2370"]
[PlyCount "128"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. d4 Nf6 2. Nf3 e6 3. g3 c5 4. Bg2 Nc6 5. O-O cxd4 6. Nxd4 Bc5 7. Nb3 Be7 8.
c4 b6 ({RR} 8... O-O 9. e4 Qc7 10. Bf4 e5 11. Bg5 d6 12. Nc3 Be6 13. Bxf6 Bxf6
14. Nd5 Bxd5 15. cxd5 Nd4 16. Nxd4 exd4 17. Qb3 Rfc8 18. Bh3 Re8 19. Qd3 Qb6
20. b3 Re7 21. Rac1 Rae8 22. Rfe1 Rc7 23. Rc4 {Darazs,Z (2124)-Krstulovic,A
(1981) Budapest 2013 1/2-1/2}) 9. Nc3 O-O $146 ({RR} 9... Ba6 10. Nb5 O-O 11.
Bf4 d5 12. Rc1 Rc8 13. a4 Nb4 14. cxd5 Nfxd5 15. Bd2 Rxc1 16. Nxc1 Qd7 17. Bxb4
Bxb4 18. e4 Nf6 19. Qxd7 Nxd7 20. Nd3 Bxb5 21. axb5 Bd6 22. Rd1 Ne5 23. Nxe5
Bxe5 24. b3 {Ftacnik,L (2595)-Hracek,Z (2630) Ostrava 1997 1/2-1/2}) 10. Nd4
Bb7 11. b3 Rc8 12. Bb2 a6 13. Nc2 Rc7 14. e4 Qb8 15. Qe2 d6 16. Rfd1 Rd8 17.
Rd2 Ba8 18. Rad1 Rcc8 19. h3 Ne5 20. f4 Ng6 21. a4 Bf8 22. Kh2 Be7 23. Ba3 Qc7
24. Ne3 Bf8 25. Rd3 Rd7 26. Ng4 Nxg4+ 27. hxg4 Bc6 28. g5 Rcd8 29. Qf2 Qb7 30.
Nd5 b5 31. Nb6 bxc4 32. bxc4 Rc7 33. Bxd6 Bxd6 34. Rxd6 Rxd6 35. Rxd6 h6 36.
gxh6 gxh6 37. Qd4 Re7 38. Rd8+ Kh7 39. f5 exf5 40. exf5 Ne5 41. Nd5 Bxd5 42.
cxd5 Qc7 43. f6 Qxd8 44. Qe4+ Kg8 45. fxe7 Qxe7 46. Qf5 a5 47. Be4 Qg5 48.
Qxg5+ hxg5 49. d6 Kf8 50. Bf5 Nc4 51. d7 Ke7 52. Kh3 Ne5 53. Kg2 Nxd7 54. Kf3
Nc5 55. Bc2 Ke6 56. Kg4 f6 57. Kh5 Ke5 58. Kg6 g4 59. Bf5 Nxa4 60. Bxg4 Nc3 61.
Bd7 a4 62. Bxa4 Nxa4 63. g4 Nc5 64. g5 f5 0-1

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.04.30"]
[Round "9"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Ruiz C, Joshua Daniel"]
[Result "1-0"]
[ECO "D93"]
[WhiteElo "2370"]
[BlackElo "2178"]
[PlyCount "95"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 g6 4. e3 Bg7 5. c4 c6 6. Nc3 O-O 7. h3 Nbd7 8. Rc1
a6 ({RR} 8... Qa5 9. Qd2 dxc4 10. Bxc4 Nh5 11. Bh2 e5 12. O-O Nb6 13. Bb3 exd4
14. exd4 Be6 15. Bxe6 fxe6 16. Rfe1 Rae8 17. Re4 Nf6 18. Re2 Nfd5 19. Rce1 Nxc3
20. bxc3 Nd5 21. Rc1 c5 22. Be5 cxd4 23. Bxg7 {Erdos,V (2523)-Ftacnik,L (2567)
Sibenik 2007 1/2-1/2}) ({RR} 8... dxc4 9. Bxc4 Nb6 10. Bd3 Nbd5 11. Be5 Qa5 12.
Qd2 Nxc3 13. bxc3 Nd7 14. Bxg7 Kxg7 15. O-O e5 16. Qb2 Re8 17. Nd2 Qb6 18. Qc2
Qd8 19. Nc4 exd4 20. cxd4 Nb6 21. Ne5 Qg5 22. f4 Qe7 23. Rf3 {Jameson,D (2143)
-Nwachukwu,C (1974) Caleta 2013 1-0 (43)}) 9. cxd5 cxd5 10. Bd3 b5 11. a4 $146
({RR} 11. Qb3 Qa5 12. O-O Nb6 13. Bc7 Bb7 14. a4 b4 15. Na2 Qxa4 16. Qxb4 Qxb4
17. Nxb4 Nbd7 18. Nc6 Rfe8 19. Na5 Bc8 20. Rc2 Nf8 21. Rc6 Ne6 22. Bh2 Bd7 23.
Rb6 Rec8 24. Ne5 Be8 25. Nec6 Kf8 {Agzamov,G-Mukhin,E (2320) Tashkent 1977 1-0
(47)}) 11... b4 12. Nb1 a5 13. Bc7 Qe8 14. Qe2 Ne4 15. Bb5 e6 16. Nbd2 Nxd2 17.
Nxd2 e5 18. Nb3 exd4 19. exd4 Qxe2+ 20. Kxe2 Ba6 21. Bxa6 Rxa6 22. Kd3 Rfa8 23.
Rhe1 Bf8 24. g4 Nb6 25. Bxb6 Rxb6 26. Re5 Rf6 27. Ke2 Re6 28. Rxe6 fxe6 29. Rc7
Bg7 30. Re7 Rc8 31. Kd3 Rf8 32. Ke3 Bh6+ 33. Ke2 Rc8 34. Kd1 Rf8 35. Ke1 Rf3
36. Nxa5 Rxh3 37. Rb7 Rh1+ 38. Ke2 Bf8 39. Nc6 Rb1 40. a5 Rxb2+ 41. Kf3 Ra2 42.
Rb6 Bd6 43. a6 g5 44. a7 Kg7 45. Rb5 b3 46. Rxb3 Ra6 47. Rb5 Bc7 48. Rb7 1-0

[Event "Puerto Boyaca op"]
[Site "Porto Boyaca"]
[Date "2012.05.01"]
[Round "10"]
[White "Panesso Rivera, Henry"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "D89"]
[WhiteElo "2324"]
[BlackElo "2370"]
[PlyCount "84"]
[EventDate "2012.04.26"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POR"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]

1. d4 {Krasenkow,M} Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7
7. Bc4 O-O 8. Ne2 c5 9. Be3 Nc6 10. O-O cxd4 11. cxd4 Bg4 12. f3 Na5 13. Bd3
Be6 14. d5 Bxa1 15. Qxa1 f6 16. Kh1 ({RR} 16. Rb1) ({RR} 16. h4 Bf7 17. h5 Nc6
18. hxg6 hxg6 19. Bc2 Ne5 20. Bb3 Rc8 21. Qe1 Kg7 22. f4 Nc4 23. Bd4 b5 24. f5
Qa5 25. Qg3 Nd2 26. Rd1 Nxe4 27. Qg4 Nc3 28. Bxc3 Rxc3 29. fxg6 Bxg6 30. Nf4
Qb6+ {Vlasenko,A (2332)-Grigorjev,I (2167) Voronezh 2013 0-1 (65)}) 16... Bd7 (
{RR} 16... Rc8 17. Bh6 ({RR} 17. Qd4 Bd7 18. Qxa7 Nc4) 17... Re8 18. g4 Bd7 19.
g5 Nc4 20. Bxc4 Rxc4 21. gxf6 exf6 22. Nf4 Kf7 23. Nd3 Qa5 24. Qb2 Qc3 25. Qb1
Qc2 26. e5 Qxb1 27. e6+ Bxe6 28. dxe6+ Rxe6 29. Rxb1 b6) 17. Bh6 ({RR} 17. e5
Rc8 ({RR} 17... Bf5 18. Bxf5 gxf5 19. Rd1 fxe5 20. Qxe5 Qd6 21. Qc3 b6 22. Bf4
Qg6 23. Qc7 Rf7) ({RR} 17... Bc6) 18. Bh6 fxe5 19. Bxf8 Qxf8 20. Qxe5 Qf6 21.
Qe3 ({RR} 21. Qxf6 exf6) ({RR} 21. f4 Nc4 22. Bxc4 Rxc4 23. Qb8+) 21... b6 22.
Ng3 Nc4 23. Qe2 ({RR} 23. Bxc4 Rxc4 24. Re1) 23... Nd6 24. f4 ({RR} 24. Re1 Kf8
25. Ne4) 24... Rc5 25. f5 ({RR} 25. Ne4) 25... Bxf5 26. Bxf5 Nxf5 27. Ne4 ({RR
} 27. Nxf5 gxf5 28. Qd3 Qe5) 27... Qe5 28. Qf3 Rxd5 ({RR} 28... Rc8) 29. g4 Rd4
30. Ng5 Qe3 ({RR} 30... h6 31. gxf5 ({RR} 31. Qb3+ Qd5+ 32. Qxd5+ Rxd5 33. gxf5
({RR} 33. Ne6 Nd6) 33... hxg5 34. fxg6 Kg7 35. Rf7+ Kxg6 36. Rxe7 Rd1+) ({RR}
31. Qa8+ Kg7 32. Nf3 Qe2) ({RR} 31. Nh3 Rd2) 31... hxg5 32. fxg6 Rf4 33. Qb3+
Kg7 34. Rxf4 Qxf4) 31. gxf5 Qxg5 {Milov,V (2626)-Van Wely,L (2629) Batumi 1999
CBM 074 [Krasenkow,M] 0-1 (48)}) 17... Rf7 ({RR} 17... Re8 18. e5 Rc8 19. Nf4
Nc4 20. e6 Ne5 ({RR} 20... Ba4 21. Nxg6) 21. Re1 Nxd3 22. exd7 Qxd7 23. Nxd3
Qxd5) 18. f4 $146 ({RR} 18. Qb1 e5 19. Be3 b6 20. Ba6 Bc8 21. Bb5 Nb7 22. Bc6
Rb8 23. Bxb7 Bxb7 24. Rd1 Ba6 25. Nc3 Rc8 26. Qb2 Qd6 27. a3 Rfc7 28. Bd2 Kg7
29. h3 Rc4 30. Nb5 Bxb5 31. Qxb5 Rd4 32. Kh2 a5 {Klima,P (1660)-Delafargue,B
(2125) France 2002 0-1 (44)}) 18... Qc7 19. Rc1 Qd6 20. Qc3 b6 21. Qd4 e6 22.
dxe6 Qxe6 23. Rc7 Be8 24. Qb4 Rd8 25. Bc2 Qd6 26. Qxd6 Rxd6 27. Rc8 Re7 28. Nc3
Kf7 29. Kg1 Rc6 30. Rxc6 Bxc6 31. Kf2 b5 32. f5 gxf5 33. exf5 b4 34. Nd1 Be4
35. Ba4 Bxf5 36. Bd2 Rb7 37. a3 bxa3 38. Bxa5 a2 39. Bc3 Rb1 40. Ne3 Bd3 41.
Bc6 a1=Q 42. Bxa1 Rxa1 0-1

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.26"]
[Round "2"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Vazquez Igarza, Renier"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "2359"]
[BlackElo "2566"]
[PlyCount "46"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]

1. e4 c5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. Nd5 e6 7. Ne3 Nge7 8. f4 ({
RR} 8. Ne2 d5 9. exd5 exd5 10. Nf4 d4 11. Nc4 O-O 12. O-O Rb8 13. a4 b6 14. Re1
Bb7 15. Bd2 Re8 16. h4 a6 17. b3 b5 18. axb5 axb5 19. Na5 Nxa5 20. Bxa5 Qd7 21.
Bd2 Bxg2 22. Kxg2 Nc6 {Zichichi,A (2350)-Browne,W (2500) Venice 1971 0-1 (58)})
8... e5 ({RR} 8... b5 9. c3 Rb8 10. Nf3 f5 11. Qe2 b4 12. Bd2 bxc3 13. bxc3 d5
14. e5 Ba6 15. Ng5 Qd7 16. O-O O-O 17. Rfb1 h6 18. Nf3 Rfc8 19. Nd1 Qc7 20. Bc1
Qa5 21. Qc2 Rxb1 22. Rxb1 d4 23. Rb3 {Mohrholz,U (2030)-Podzielny,K (2430)
Oberhausen 2013 0-1 (44)}) 9. Ne2 f5 $146 ({RR} 9... O-O 10. f5 gxf5 11. O-O
fxe4 12. dxe4 f5 13. c4 Be6 14. exf5 Nxf5 15. Bd5 Nfd4 16. Bxe6+ Nxe6 17. Nf5
Qd7 18. Qd5 Rxf5 19. Rxf5 Ne7 20. Qe4 Nxf5 21. Qxf5 Rf8 22. Qe4 Qf7 23. Be3 Nd4
24. Bxd4 {Vallin,G-Sherbakov,R (2545) Metz 1994 0-1 (34)}) 10. fxe5 dxe5 11.
O-O O-O 12. a3 Be6 13. Rb1 Qd7 14. b4 cxb4 15. axb4 b5 16. c4 Rab8 17. Nd5 fxe4
18. Rxf8+ Rxf8 19. dxe4 bxc4 20. Be3 Rd8 21. Bg5 h6 22. Bxh6 Nxd5 23. Bxg7 Nf4
0-1

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.26"]
[Round "3"]
[White "Ledezma, Daniel Jose"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2085"]
[BlackElo "2359"]
[PlyCount "60"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 bxc6 7. Bd3 Ne7
8. O-O O-O 9. Qf4 Qxf4 10. Bxf4 d6 11. c3 a5 12. Nd2 Be6 $146 ({RR} 12... f5
13. Bg5 Ng6 14. exf5 Bxf5 15. Ne4 Bb6 16. Rad1 Ne5 17. Bb1 d5 18. Ng3 Bxb1 19.
Rxb1 Nd3 20. Be3 Bxe3 21. fxe3 Rae8 22. Rfd1 Nf2 23. Rd4 Rxe3 24. Rf1 c5 25.
Rxd5 Rd3 26. Rxc5 Ng4 27. Nf5 {Szollosi,L (2245)-Zsinka,L (2293) Hungary 2010
1/2-1/2 (60)}) 13. Nb3 Bb6 14. Nd2 f5 15. Bg5 Ng6 16. exf5 Bxf5 17. Bxf5 Rxf5
18. Be3 Bxe3 19. fxe3 Rd5 20. Nf3 Re8 21. Rfe1 a4 22. Nd4 c5 23. Nb5 Rd2 24.
Nxc7 Re7 25. Nb5 Nh4 26. Kh1 d5 27. b3 Nxg2 28. Rg1 Nh4 29. bxa4 Rxe3 30. Rg4
Rh3 0-1

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.27"]
[Round "4"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Mendoza, Gustavo"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2359"]
[BlackElo "2150"]
[PlyCount "41"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]

1. Nf3 {Gelfand,B Ftacnik,L} d5 2. c4 e6 3. d4 Nf6 4. Nc3 Bb4 5. cxd5 exd5 6.
Bg5 h6 7. Bh4 g5 8. Bg3 Ne4 9. Nd2 Nxc3 10. bxc3 Bxc3 11. Rc1 Bb2 ({RR} 11...
Ba5 12. e3 c6 13. h4 g4 14. Be2 Be6 ({RR} 14... h5 15. O-O Bc7 16. Bxc7 Qxc7
17. e4 Be6 18. exd5 Bxd5 19. Bc4 Qd8 20. Re1+ Kf8 21. Qb3) 15. O-O h5 ({RR}
15... Nd7 16. Nb3 Bc7 17. Bxg4 Bxg3 18. Bxe6 Bd6 19. Qh5 Qe7 20. Bxd7+ Qxd7 21.
Nc5 Qe7 22. e4 Bxc5 23. dxc5 O-O-O) ({RR} 15... Bxd2 16. Qxd2 Nd7 17. Rb1) 16.
e4 ({RR} 16. Nb3 Bc7 ({RR} 16... Nd7 17. Nxa5 Qxa5 18. f3) 17. Nc5 Bxg3 18.
fxg3 Nd7 19. Nxe6 fxe6 20. Qd3 Rh6) ({RR} 16. f3 Bc7 17. Bxc7 Qxc7) 16... Bb6 (
{RR} 16... Bxd2 17. Qxd2 dxe4 18. Qf4) ({RR} 16... Nd7 17. exd5 cxd5 18. Nb3
Bb6 19. f3) 17. exd5 cxd5 18. Nb3 ({RR} 18. Bb5+ Kf8 ({RR} 18... Nd7 19. Nb3 a6
20. Ba4 Kf8 21. Nc5) 19. Nb3) 18... Nc6 19. Qd2 Rc8 ({RR} 19... Qf6 20. Bb5 O-O
21. Bxc6 bxc6 22. Rxc6 Rac8 23. Rxc8 Rxc8 24. Be5 Qg6 25. Qf4) 20. Bb5 ({RR}
20. Nc5 Qe7 ({RR} 20... Bxc5 21. dxc5 f6 22. Rb1 Qd7 23. Rb2) ({RR} 20... Qf6
21. Nxb7 O-O 22. Nd6) 21. Bb5 Bxc5 22. dxc5) ({RR} 20. f3 gxf3 ({RR} 20... Bc7
21. Bxc7 Rxc7 22. fxg4 hxg4 23. g3 Qd6 24. Rf4 b6 25. Bxg4) 21. Rxf3 Nxd4 22.
Nxd4 Rxc1+ 23. Kh2 Bxd4 24. Qxd4) 20... Kf8 21. Nc5 ({RR} 21. f3 gxf3 ({RR}
21... Bc7 22. Bxc7 Rxc7 23. Qf4) 22. Rxf3 Nxd4 23. Nxd4 Rxc1+ 24. Kh2 Bg4 25.
Qxc1 Bxd4 26. Qf4 Bg1+ 27. Kxg1 Bxf3 28. Qb4+ Kg8 29. gxf3 Qf6) 21... Bxc5 22.
Rxc5 ({RR} 22. dxc5 Kg7 ({RR} 22... f6 23. Rce1 Qd7 ({RR} 23... Kf7 24. f3) 24.
f3 Kg7 25. fxg4 Bxg4 26. Rxf6) 23. f3 f6 24. Rce1 Re8) 22... f6 23. Bxc6 ({RR}
23. f3 Kg7 24. Be2 gxf3 25. Bxf3 Qd7) 23... bxc6 ({RR} 23... Rxc6 24. Rxc6 bxc6
25. Rb1) 24. f3 Kg7 25. fxg4 Bxg4 26. Ra5 {Gelfand,B (2695)-Bareev,E (2670)
Polanica Zdroj 1997 CBM 061 [Gelfand,B] 1/2-1/2 (36)}) 12. Rxc7 ({RR} 12. Bxc7
Qe7 13. Bd6 ({RR} 13. Rc2 Bxd4 14. Bxb8 Rxb8 15. e3 Bf5 16. Rc1 O-O 17. Be2 Bb2
18. O-O Bxc1 19. Qxc1 Rbc8) 13... Qe6 14. Rc2 Bxd4 15. Ba3 Nc6 16. e4 Bd7 17.
Nb3 Bb6) ({RR} 12. Bxc7 Qe7 13. Bd6 Qe6 14. Rb1 Bc3 15. Ba3 Nc6 16. e3 Bxd4 17.
Bb5 Be5 18. O-O Bd6 19. Bxd6 Qxd6 20. Ne4 Qe5 21. Qxd5 Qxd5 22. Nf6+ Kf8 23.
Nxd5 Ne7 24. Nc7 Rb8 25. Rfd1 Bf5 26. Rbc1 Kg7 {Perunovic,M (2445)-Bogoevski,J
(2217) Skopje 2013 1/2-1/2 (43)}) 12... Na6 ({RR} 12... Nc6 13. e3 Ba3 14. Qh5)
13. Rc2 Bxd4 14. e4 $146 ({RR} 14. e3 Bg7 ({RR} 14... Qe7 15. Rxc8+ Rxc8 16.
Qa4+ Kf8 17. Qxd4 Rc1+ 18. Ke2 Rg8 19. h4) 15. Bxa6 bxa6 16. O-O Bd7 ({RR}
16... O-O 17. Rc6) 17. Qf3 Bb5 18. Rd1 O-O 19. Nb3 Rc8 20. Rxc8 ({RR} 20. Rxd5
Rxc2 21. Rxd8 Rxd8) 20... Qxc8 21. Qxd5 Qc2 22. Qd2 Qxd2 23. Rxd2 Rc8 24. h4
gxh4 25. Bxh4 Rc3 26. Bg3 Kh7 27. Kh2 Bc4 28. Rd6 ({RR} 28. Nd4 Ra3) 28... Rc2
{Epishin,V (2620)-Sosonko,G (2530) Ter Apel 1992 CBM 030 [Ftacnik,L] 1/2-1/2
(40)} ({RR} 28... Bxb3 29. axb3 Rxb3 30. Rxa6 Rb7 31. Bd6)) ({RR} 14. e3 Bg7
15. Bxa6 bxa6 16. O-O O-O 17. Nb3 Be6 18. Rc6 Re8 19. Nd4 Qa5 20. Qd3 Qa4 21.
Qxa6 Qxa6 22. Rxa6 Rac8 23. Rxa7 Ra8 24. Rxa8 Rxa8 25. Ra1 Ra4 26. h3 h5 27.
Rd1 Rxa2 28. h4 gxh4 {Sulava,N (2512)-Renet,O (2517) France 2006 1/2-1/2 (31)})
14... dxe4 15. Bb5+ Bd7 16. Bxd7+ Qxd7 17. Nxe4 Bg7 18. Bd6 f5 19. Qh5+ Qf7 20.
Nf6+ Bxf6 21. Re2+ 1-0

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.27"]
[Round "5"]
[White "Salcedo, Jackeline"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[ECO "A27"]
[WhiteElo "1963"]
[BlackElo "2359"]
[PlyCount "62"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 g6 4. d4 exd4 5. Nxd4 Bg7 6. e3 Nf6 7. Be2 O-O 8.
O-O Re8 9. b3 Nxd4 10. exd4 d5 11. cxd5 $146 ({RR} 11. Be3 c6 12. h3 Bf5 13.
Rc1 Ne4 14. Bf3 Nxc3 15. Rxc3 Qa5 16. Qd2 dxc4 17. bxc4 c5 18. Rd1 Rad8 19. Bd5
Be4 20. Rd3 Qxd2 21. R3xd2 cxd4 22. Bxd4 Bxd4 23. Rxd4 Bxd5 24. Rxd5 Rxd5 25.
Rxd5 Re1+ {Fink,W-Burbach,R Bochum 1978 1/2-1/2}) 11... Nxd5 12. Nxd5 Qxd5 13.
Be3 Bf5 14. Rc1 c6 15. Qd2 Rad8 16. Rfd1 Qd6 17. Bf3 Be4 18. Be2 h5 19. Qa5 Qb8
20. Qg5 Rd5 21. Qg3 Qd8 22. Bc4 Rd7 23. Bf4 Qg5 24. Bd2 Qa5 25. Bc3 b5 26. Bf1
Qxa2 27. Ba1 Bd5 28. b4 Ree7 29. Rd3 Re1 30. Ra3 Rxc1 31. Rxa2 Bxa2 0-1

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.28"]
[Round "6"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Alcala Vitora, Wilfredo Enrique"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2359"]
[BlackElo "1962"]
[PlyCount "27"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]

1. d4 d5 2. c3 c6 3. Nf3 Nf6 4. g3 ({RR} 4. e3 Bf5 5. Bd3 Bxd3 6. Qxd3 e6 7.
Nbd2 Be7 8. O-O O-O 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 Qd5 12. Re1 Qxe4 13. Rxe4
Nd7 14. Bg5 Bxg5 15. Nxg5 h6 16. Nf3 {1/2-1/2 (16) Votava,J (2547)-Haba,P
(2526) Ceska Trebova 2007}) 4... Bf5 5. Nbd2 ({RR} 5. Qb3 Qb6 6. Nbd2 Nbd7 7.
Bg2 e6 8. O-O Be7 9. Re1 Ne4 10. Nxe4 Bxe4 11. Bf4 O-O 12. Ne5 Qxb3 13. axb3
Nxe5 14. Bxe4 Nd7 15. Bg2 f5 16. h4 Nf6 17. b4 a6 18. f3 Nh5 19. Be5 f4 {
Nikolic,V (1987)-Khafizova,Y (1934) Paracin 2012 1-0 (92)}) 5... e6 6. Bg2 $146
({RR} 6. Nh4 Bg4 7. h3 Bh5 8. g4 Bg6 9. Nxg6 hxg6 10. Bg2 Nbd7 11. e4 Nxe4 12.
Nxe4 dxe4 13. Bxe4 Qc7 14. g5 Nb6 15. Qf3 Bd6 16. Be3 Rh4 17. O-O-O O-O-O 18.
Rdg1 Rdh8 19. Rg4 Kb8 20. Rxh4 Rxh4 {Limp,E (2420)-Mitkov,N (2547) Rio de
Janeiro 2000 1-0 (40)}) ({RR} 6. Nh4 Bg6 7. Nxg6 hxg6 8. h4 Bd6 9. Nf3 Nbd7 10.
Rg1 Qc7 11. Ng5 e5 12. dxe5 Nxe5 13. Bf4 Nc4 14. Bxd6 Nxd6 15. Qd3 O-O-O 16.
O-O-O Kb8 17. f3 Rhe8 18. Bh3 Nc4 19. b3 Ne3 20. Rd2 Re7 {Lozinsky,V-Rykov,I
(1759) St Petersburg 2011 0-1}) 6... Nbd7 7. O-O Bd6 8. Nh4 Bg4 9. Re1 g5 10.
Nhf3 Ne4 11. Nxe4 dxe4 12. Nxg5 Bc7 13. Nxe4 h5 14. Bg5 1-0

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.29"]
[Round "8"]
[White "Escobar Forero, Alder"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1/2-1/2"]
[ECO "C89"]
[WhiteElo "2483"]
[BlackElo "2359"]
[PlyCount "79"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3
d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15.
Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. Bxd5 cxd5 19. Qf1 Qh5 20. a4 ({RR} 20. f3
Rf6 21. Qf2 Bxf3 22. Nxf3 Qxf3 23. Qxf3 Rxf3 24. Kg2 Rf6 25. Bd2 Rb8 26. b4 Kf8
27. a4 Bc7 28. axb5 axb5 29. Ra7 Rc6 30. Rxc7 Rxc7 31. Bf4 Rbb7 32. Bd6+ Re7
33. Re5 Ke8 34. Bxe7 Rxe7 {Milos,G (2565)-Slipak,S (2535) Villa Gesell 1996
1-0 (52)}) ({RR} 20. f3 Bh3 21. Qf2 Rfe8 22. f4 Qf5 23. Nf3 f6 24. Nh4 Qd3 25.
Bd2 Re2 26. Rxe2 Rxe2 27. Qf3 Qxf3 28. Nxf3 Rg2+ 29. Kh1 Rf2 {0-1 (29)
Shailesh,D (1914)-Aradhya,G (2025) Kolkata 2013}) 20... b4 21. a5 $146 ({RR}
21. f3 Bh3 22. Qf2 Rf6 23. f4 g5 24. Qf3 Qxf3 25. Nxf3 gxf4 26. Bxf4 Bxf4 27.
gxf4 Rg6+ 28. Kf2 Rg2+ 29. Kf1 Rxh2+ 30. Kg1 Rg2+ 31. Kh1 Rxb2 32. Re3 Bg2+ 33.
Kg1 Bxf3 34. Rxf3 bxc3 35. Rxc3 Rd2 {Pardo Robles,J (2005)-Garcia Gonzalez,P
(1921) Madrid 2007 1/2-1/2 (67)}) ({RR} 21. c4 dxc4 22. Qxc4 g5 23. d5 Rh6 24.
h4 Rc8 25. Qd3 gxh4 26. Bxh6 hxg3 27. fxg3 Qxh6 28. Rac1 Rxc1 29. Rxc1 Bb8 30.
Qd4 Bd7 31. Rc2 Qh5 32. Ne4 Be5 33. Qd2 Bxa4 34. d6 Qg6 35. Rc4 Bf6 {Tal,
M-Krogius,N Yerevan 1962 1-0 (37)}) 21... Rfe8 22. f3 Rxe3 23. Rxe3 Rxe3 24.
Qxa6 bxc3 25. bxc3 Bf8 26. fxg4 Qxg4 27. Qf1 Rxc3 28. Qf4 Qxf4 29. gxf4 f5 30.
a6 Rc8 31. a7 Ra8 32. Ra6 Kf7 33. Nf1 g5 34. Ne3 gxf4 35. Nxd5 Bg7 36. Ra4
Bxd4+ 37. Rxd4 Rxa7 38. Rxf4 Ke6 39. Ne3 Ra5 40. h4 1/2-1/2

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.29"]
[Round "9"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Chirivi Castiblanco, Jenny Astrid"]
[Result "1-0"]
[ECO "D51"]
[WhiteElo "2359"]
[BlackElo "2181"]
[PlyCount "24"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]

1. d4 d5 2. Bg5 Nd7 3. c4 c6 4. cxd5 cxd5 5. Nc3 Ngf6 6. e3 e6 7. Bd3 a6 ({RR}
7... Bd6 8. f4 a6 9. Nf3 Qa5 10. O-O b5 11. Ne5 Bb7 12. Nxd7 Nxd7 13. f5 e5 14.
e4 f6 15. Qh5+ Ke7 16. Be3 Qd8 17. exd5 Qe8 18. Qg4 Qf7 19. Ne4 Rhc8 20. Rac1
Rxc1 21. Rxc1 Rc8 22. Rxc8 {Eljanov,P (2592)-Kosikov,A (2431) Alushta 2004 1-0}
) ({RR} 7... Be7 8. f4 h6 9. Bxf6 Nxf6 10. Nf3 a6 11. O-O O-O 12. Ne5 Bd7 13.
g4 Ne8 14. g5 hxg5 15. fxg5 Bxg5 16. Qh5 Bxe3+ 17. Kh1 f5 18. Ng6 Bh6 19. Nxf8
Kxf8 20. Rae1 Nf6 21. Qh4 Qb6 22. Re2 {Castro Rojas,O (2359)-Corradine,J (2154)
Fusagasuga 1999 1-0 (50)}) 8. e4 $146 ({RR} 8. f4 b5 9. Nf3 Be7 10. O-O O-O 11.
Ne5 Bb7 12. a4 b4 13. Ne2 Ne4 14. Bxe7 Qxe7 15. Nc1 f6 16. Nxd7 Qxd7 17. Nb3
Qd6 18. Na5 Rf7 19. Qe2 Qb6 20. Nxb7 Qxb7 21. a5 Nd6 22. Rfc1 Nb5 {Regedzinski,
T-Rometti,B Buenos Aires 1939 1-0 (51)}) ({RR} 8. a4 Bd6 9. Nf3 O-O 10. O-O Qc7
11. Qe2 Re8 12. Rac1 Qb8 13. e4 dxe4 14. Nxe4 Nxe4 15. Qxe4 Nf8 16. Ne5 Ng6 17.
Rfe1 b6 18. Nc6 Bb7 19. Qe3 Bxc6 20. Rxc6 Bxh2+ 21. Kf1 Bf4 22. Bxf4 Nxf4 {
Dimov,D (1905)-Gribov,M Sunny Beach 2013 1-0 (36)}) ({RR} 8. Nf3 Bd6 9. O-O b5
10. e4 dxe4 11. Nxe4 Be7 12. a4 b4 13. Rc1 Bb7 14. Nc5 Nxc5 15. dxc5 Rc8 16.
Qe2 Qa5 17. Nd4 O-O 18. Nf5 Bxc5 19. Bxf6 exf5 20. Bxf5 Rc6 21. Be5 Re8 22. Kh1
Bxf2 {Van Scheltinga,T-Horowitz,I Dubrovnik 1950 1/2-1/2}) 8... Be7 9. Nf3 Ng4
10. Qe2 f6 11. h3 Ne3 12. Qxe3 fxg5 1-0

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.30"]
[Round "10"]
[White "Kovalyov, Anton"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "2598"]
[BlackElo "2359"]
[PlyCount "79"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 Nge7 6. Nge2 d6 7. d3 O-O 8. O-O
Be6 9. Nd5 Qd7 10. b3 ({RR} 10. Qd2 Nf5 11. b3 Nd8 12. e4 Ne7 13. Bb2 Ndc6 14.
d4 Nxd4 15. Nxd4 exd4 16. Bxd4 Bxd4 17. Qxd4 Bxd5 18. cxd5 c6 19. dxc6 Nxc6 20.
Qa4 Qc7 21. Rfd1 Rad8 22. Rd5 Rfe8 23. Rc1 a6 24. Qd4 Rd7 {Panno,O (2540)
-Unzicker,W (2510) Amsterdam 1980 1-0 (48)}) ({RR} 10. Nxe7+ Qxe7 11. Bd2 f5
12. Bc3 Nd8 13. Qd2 c6 14. f4 Nf7 15. fxe5 Nxe5 16. Nf4 Bf7 17. e4 fxe4 18.
Bxe4 Nxc4 19. Qc1 Ne5 20. Qc2 d5 21. Bf3 Nxf3+ 22. Rxf3 Qc5+ 23. Qf2 Qxf2+ 24.
Kxf2 d4 {Sylwestrzuk,M-Starczewska,M (1829) Warsaw 2013 0-1 (41)}) 10... Rae8
$146 ({RR} 10... f5 11. Bb2 Nd8 12. d4 e4 13. Nxe7+ Qxe7 14. Ba3 Bf7 15. Qd2
Re8 16. Rfe1 Ne6 17. Rad1 Qd7 18. h4 Rad8 19. Rc1 c6 20. Rc2 h6 21. Bh3 Nc7 22.
Nc3 g5 23. hxg5 hxg5 24. d5 Bh5 25. dxc6 {Hoelzl,F (2430)-Stanec,N (2490)
Austria 1996 0-1 (37)}) ({RR} 10... Nc8 11. Bb2 Nd8 12. e4 c6 13. Ne3 f5 14.
exf5 gxf5 15. f4 Ne7 16. Qd2 Ng6 17. Kh1 c5 18. Rf2 Nc6 19. Raf1 Rae8 20. Nd5
Kh8 21. Bc3 Nd4 22. Nxd4 exd4 23. Bb2 Bxd5 24. Bxd5 Re3 25. Qd1 {Parmentier,X
(2335)-Vigh,B (2385) Budapest 1998 0-1 (55)}) 11. Ba3 Nd8 12. Rc1 c6 13. Nxe7+
Rxe7 14. d4 e4 15. d5 Bg4 16. c5 Re5 17. dxc6 Nxc6 18. Bb2 Rxc5 19. Bxg7 Rxc1
20. Qxc1 Bxe2 21. Bxf8 Bxf1 22. Kxf1 Kxf8 23. Bxe4 Ke7 24. Qd2 Qe6 25. Bxc6
bxc6 26. Qd4 c5 27. Qa4 Qd5 28. Qxa7+ Ke6 29. Qa4 Qh1+ 30. Ke2 Qxh2 31. Qe4+
Kd7 32. a4 Qh5+ 33. g4 Qg5 34. a5 d5 35. Qa4+ Kd6 36. a6 d4 37. a7 Qxg4+ 38.
Kd2 dxe3+ 39. Kxe3 Qe6+ 40. Qe4 1-0