[Event "Bogota AlphaZero op"]
[Site "Bogota"]
[Date "2018.08.20"]
[Round "7"]
[White "Acosta, Alejandro"]
[Black "Mejia Toscano, Daniel Ricardo"]
[Result "1-0"]
[ECO "B87"]
[WhiteElo "2292"]
[BlackElo "1992"]
[PlyCount "45"]
[EventDate "2018.08.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. Bg5 Be7 9. Qf3 Qc7 10. e5 Bb7 11. exd6 Bxd6 12. Qe3 b4 13. Bxf6 bxc3 14. Nxe6 fxe6 15. Qxe6+ Kf8 16. 0-0-0 Qd7 17. Qxd6+ Qxd6 18. Rxd6 gxf6 19. Re1 cxb2+ 20. Kxb2 Kg7 21. Re7+ Kg6 22. Rxb7 a5 23. Rf7 1-0

[Event "Bogota AlphaZero op"]
[Site "Bogota"]
[Date "2018.08.20"]
[Round "6"]
[White "Bejarano, Danny Andres"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2063"]
[BlackElo "2292"]
[PlyCount "61"]
[EventDate "2018.08.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 dxe5 8. Nxe5 Nxe5 9. dxe5 e6 10. 0-0 Be7 11. Qg4 g6 12. Bh6 Qc7 13. Bb5+ Bd7 14. Bxd7+ Qxd7 15. Rc1 Bf8 16. Bxf8 Kxf8 17. Nc3 Kg7 18. Rd1 Rhd8 19. Ne4 Qa4 20. Qf3 b6 21. Nf6 Qf4 22. Nxd5 Qxf3 23. gxf3 Rxd5 24. Rxd5 exd5 25. Rd1 Rd8 26. f4 Kf8 27. f3 Ke7 28. Kf2 Ke6 29. Rc1 d4 30. Rc6+ Kd5 31. Rc7 1/2-1/2

[Event "Bogota AlphaZero op"]
[Site "Bogota"]
[Date "2018.08.19"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Ruiz Aguilar, Pablo Alexander"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "2292"]
[BlackElo "2158"]
[PlyCount "62"]
[EventDate "2018.08.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. f4 b5 7. Bd3 Bb7 8. Qe2 Nf6 9. e5 b4 10. Ncb5 axb5 11. exf6 gxf6 12. Nxb5 Qc6 13. Be3 Na6 14. 0-0 Rg8 15. Rf2 Nc5 16. Nd4 Qd5 17. Bc4 Qe4 18. Nb5 Rc8 19. c3 Qf5 20. cxb4 Ne4 21. Rf3 Rxc4 22. Qxc4 Rxg2+ 23. Kf1 Rg1+ 24. Kxg1 Qg4+ 25. Rg3 Nxg3 26. hxg3 Qxg3+ 27. Kf1 Qxe3 28. Rd1 Qf3+ 29. Ke1 Qe3+ 30. Kf1 Qf3+ 31. Ke1 Bxb4+ 1/2-1/2

[Event "Bogota AlphaZero op"]
[Site "Bogota"]
[Date "2018.08.19"]
[Round "4"]
[White "Dominguez Rincon, Miller Duvan"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2051"]
[BlackElo "2292"]
[PlyCount "68"]
[EventDate "2018.08.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nxc6 bxc6 6. Nc3 Nf6 7. Bd3 d5 8. 0-0 e6 9. Qe2 Be7 10. b3 0-0 11. Bb2 Bb7 12. Rae1 Rfe8 13. e5 Nd7 14. f4 g6 15. Qg4 Bf8 16. h4 Bg7 17. h5 a6 18. Nd1 Nc5 19. Nf2 a5 20. Nh3 Nxd3 21. cxd3 a4 22. hxg6 hxg6 23. Ng5 axb3 24. axb3 Ra2 25. Ba1 Qb6+ 26. Kh2 c5 27. d4 Qxb3 28. Rb1 Qd3 29. Nxf7 Rxa1 30. Rxa1 Kxf7 31. dxc5 Qf5 32. Qxf5+ gxf5 33. Kg1 d4 34. g3 d3 0-1

[Event "Bogota AlphaZero op"]
[Site "Bogota"]
[Date "2018.08.18"]
[Round "3"]
[White "Acosta, Alejandro"]
[Black "Mora, Luis Jose"]
[Result "1-0"]
[ECO "D26"]
[WhiteElo "2292"]
[BlackElo "1881"]
[PlyCount "47"]
[EventDate "2018.08.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Qxd5 5. Nc3 Qd8 6. d4 e6 7. Nf3 Be7 8. Bc4 Nf6 9. 0-0 0-0 10. Re1 Nbd7 11. Qe2 Nb6 12. Bb3 Nbd5 13. Bg5 Re8 14. Rad1 Qc7 15. Rc1 Qd6 16. Bh4 a6 17. Ne5 Rf8 18. h3 Bd7 19. Bxf6 gxf6 20. Nxd7 Qxd7 21. Qg4+ Kh8 22. Nxd5 f5 23. Qe2 Bd8 24. Qe5+ 1-0

[Event "Bogota AlphaZero op"]
[Site "Bogota"]
[Date "2018.08.18"]
[Round "2"]
[White "Hernandez, Jeronimo"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1851"]
[BlackElo "2292"]
[PlyCount "70"]
[EventDate "2018.08.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. exd6 Qxd6 8. Nc3 Bg4 9. Be2 e6 10. 0-0 Be7 11. Ne4 Qc7 12. h3 Bh5 13. Ng3 Bg6 14. a3 0-0 15. Bd3 Rfd8 16. Bxg6 hxg6 17. Bd2 Rac8 18. Rc1 Qb6 19. Bc3 Nxc3 20. bxc3 Bxa3 21. Rb1 Qa5 22. Qb3 Bf8 23. Qxb7 Rc7 24. Qb5 Qxb5 25. Rxb5 Ne7 26. Ne4 Nd5 27. Ra1 f5 28. Neg5 Nxc3 29. Re5 Rd6 30. Nxe6 Rb7 31. Nc5 Rb1+ 32. Rxb1 Nxb1 33. Re8 Kf7 34. Ra8 Be7 35. Ne5+ Kf6 1/2-1/2

[Event "Bogota AlphaZero op"]
[Site "Bogota"]
[Date "2018.08.17"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Guerrero Guzman, Francisco"]
[Result "1-0"]
[ECO "D41"]
[WhiteElo "2292"]
[BlackElo "1678"]
[PlyCount "41"]
[EventDate "2018.08.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. cxd5 Nxd5 8. Bd3 Nd7 9. 0-0 0-0 10. Re1 Re8 11. a3 Nf8 12. Ne5 Bd7 13. Qf3 f6 14. Nxd5 exd5 15. Qxd5+ Be6 16. Qxd8 Raxd8 17. Nf3 a6 18. Bd2 Bg4 19. Bc4+ Kh8 20. Bf7 Bxf3 21. gxf3 1-0

[Event "Bogota Millonario op"]
[Site "Bogota"]
[Date "2015.12.21"]
[Round "6"]
[White "Acosta, Alejandro"]
[Black "Terry, Renato"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "2292"]
[BlackElo "2465"]
[PlyCount "110"]
[EventDate "2015.12.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. h3 d5 5. Nf3 dxe4 6. Nxe4 Nd7 7. Bc4 Ngf6 8. Nxf6+ Nxf6 9. 0-0 0-0 10. Re1 Qc7 11. Bg5 Re8 12. Qd2 Bf5 13. Ne5 Nd5 14. Bh6 Rad8 15. c3 f6 16. Nd3 Bxh6 17. Qxh6 Bxd3 18. Bxd3 Qf4 19. Qxf4 Nxf4 20. Bc4+ e6 21. Re4 Nd5 22. Rae1 Kf7 23. g3 b5 24. Bb3 a5 25. a4 Rd6 26. R4e2 b4 27. cxb4 Nxb4 28. Bc4 Rxd4 29. Rxe6 Rxe6 30. Bxe6+ Kf8 31. b3 Nd3 32. Re3 Nc5 33. Bc4 Rd2 34. h4 Rc2 35. h5 gxh5 36. Rf3 Kg7 37. Rf5 Nxa4 38. Rxa5 Nb2 39. Ra7+ Kg6 40. Bg8 f5 41. Bxh7+ Kf6 42. Bg8 Nd3 43. f4 Nc5 44. Rf7+ Kg6 45. Rc7 Ne4 46. Bc4 Nxg3 47. Rxc6+ Kg7 48. Rc7+ Kf6 49. Rf7+ Kg6 50. Rc7 Rb2 51. Rc6+ Kg7 52. Rc7+ Kf6 53. Rc6+ Kg7 54. Rc7+ Kf6 55. Rc6+ Kg7 1/2-1/2

[Event "Bogota Millonario op"]
[Site "Bogota"]
[Date "2015.12.21"]
[Round "7"]
[White "Almeida Quintana, Omar"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2527"]
[BlackElo "2292"]
[PlyCount "40"]
[EventDate "2015.12.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 dxc4 5. e3 a6 6. Bxc4 b5 7. Bd3 Bb7 8. 0-0 c5 9. dxc5 Bxc5 10. Qe2 Nbd7 11. b3 0-0 12. Bb2 Rc8 13. Rfd1 Qc7 14. a4 b4 15. Nb1 a5 16. Nbd2 Be7 17. Nc4 Ng4 18. Bxh7+ Kxh7 19. Qd3+ Kg8 20. Qxd7 Qb8 1-0

[Event "Bogota Millonario op"]
[Site "Bogota"]
[Date "2015.12.20"]
[Round "5"]
[White "Torres Cueto, Jesus Marcial"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1896"]
[BlackElo "2292"]
[PlyCount "162"]
[EventDate "2015.12.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. d3 Nc6 3. g3 g6 4. Bg2 Bg7 5. f4 e6 6. Nf3 Nge7 7. 0-0 d6 8. Be3 0-0 9. Bf2 b6 10. c3 Qd7 11. Qc2 Ba6 12. Rd1 Rfd8 13. Rd2 Rab8 14. Qd1 Qc7 15. Qa4 Qc8 16. Qd1 b5 17. d4 cxd4 18. cxd4 d5 19. e5 b4 20. Rc2 Qb7 21. Nbd2 Na5 22. Rac1 Rdc8 23. Rxc8+ Rxc8 24. Rxc8+ Qxc8 25. Nb3 Nxb3 26. axb3 Bb5 27. Ne1 Qa6 28. Qc1 Nc6 29. Qb1 Bf8 30. g4 Qb6 31. Qd1 Bh6 32. g5 Bf8 33. Bf1 Bxf1 34. Kxf1 Qa6+ 35. Nd3 Qb6 36. Nc1 Be7 37. Ke2 Bd8 38. Qd3 Qa5 39. Qc2 Qa6+ 40. Nd3 Be7 41. Ke1 Qb5 42. Nc1 Kf8 43. h4 Ke8 44. h5 Kd7 45. hxg6 hxg6 46. Be3 Qb6 47. Qd3 Kc7 48. Bf2 Kb7 49. Ne2 Qa6 50. Qxa6+ Kxa6 51. Kd2 Kb5 52. Kd3 Na5 53. Nc1 Bd8 54. Bg1 Bb6 55. Bf2 Nc6 56. Bg1 a5 57. Bf2 Ne7 58. Be1 Nf5 59. Ne2 a4 60. bxa4+ Kxa4 61. Bd2 Kb3 62. Bc1 Ba5 63. Ng1 Nxd4 64. Nh3 Nc6 65. Nf2 Ka2 66. Ng4 b3 67. Nh6 Nd8 68. Ke2 Kb1 69. Kd1 Bb6 70. f5 exf5 71. Bf4 Ne6 72. Bc1 f4 73. Nxf7 f3 74. Bd2 Kxb2 75. Nh8 Ka2 76. Bc1 Be3 77. Bxe3 b2 78. Ke1 b1Q+ 79. Kf2 Qd1 80. Ba7 Qe2+ 81. Kg3 Qg2+ 0-1

[Event "Bogota Millonario op"]
[Site "Bogota"]
[Date "2015.12.19"]
[Round "4"]
[White "Acosta, Alejandro"]
[Black "Cori Tello, Deysi Estella"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2292"]
[BlackElo "2425"]
[PlyCount "37"]
[EventDate "2015.12.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 c5 3. Nf3 a6 4. Nc3 b5 5. dxc5 Bxc5 6. e5 d5 7. exd6 Qxd6 8. Qxd6 Bxd6 9. Ne4 Bc7 10. Be3 Ne7 11. a4 bxa4 12. Bc5 Nd7 13. Nd6+ Bxd6 14. Bxd6 Nb6 15. Bc5 Rb8 16. Bd6 Ra8 17. Bc5 Nd7 18. Bd6 Nb6 19. Bc5 1/2-1/2

[Event "Bogota Millonario op"]
[Site "Bogota"]
[Date "2015.12.19"]
[Round "3"]
[White "Magas Varas, Rodrigo"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "2101"]
[BlackElo "2292"]
[PlyCount "106"]
[EventDate "2015.12.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. b3 g6 3. Bb2 Nf6 4. Qf3 d6 5. Bb5+ Nbd7 6. Nc3 Bg7 7. Nge2 0-0 8. Bxd7 Nxd7 9. 0-0-0 Rb8 10. Qg3 e5 11. Nd5 b5 12. h4 Bb7 13. h5 Bxd5 14. exd5 Nf6 15. hxg6 fxg6 16. f4 Rb7 17. Qh3 Qd7 18. fxe5 dxe5 19. Qxd7 Rxd7 20. Bxe5 Rxd5 21. d4 cxd4 22. Bxd4 Rfd8 23. c3 a6 24. Bxf6 Bxf6 25. Rxd5 Rxd5 26. Rd1 Re5 27. Kd2 h5 28. Ke1 Bh4+ 29. Kf1 Re6 30. g3 Bg5 31. Rd3 Kf7 32. Kf2 Ke7 33. Nd4 Rd6 34. Ke2 Kd7 35. Nf3 Bf6 36. c4 bxc4 37. bxc4 Rxd3 38. Kxd3 Kd6 39. Ke4 Kc5 40. Kd3 a5 41. Nd2 Be5 42. Ne4+ Kb4 43. c5 Kb5 44. a4+ Kc6 45. Kc4 Bc7 46. Kd4 g5 47. Nxg5 Bxg3 48. Nh3 h4 49. Kc4 Bb8 50. Ng1 Bf4 51. Nf3 h3 52. Nd4+ Kb7 53. c6+ Kb6 0-1

[Event "Bogota Millonario op"]
[Site "Bogota"]
[Date "2015.12.18"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Almanza, Rafael Andres"]
[Result "1/2-1/2"]
[ECO "C03"]
[WhiteElo "2292"]
[BlackElo "2167"]
[PlyCount "54"]
[EventDate "2015.12.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Be7 4. Ngf3 Nf6 5. Bd3 c5 6. dxc5 0-0 7. 0-0 a5 8. Qe2 Na6 9. exd5 Nxd5 10. Ne4 Qc7 11. g3 Nxc5 12. Nxc5 Qxc5 13. c4 Nb4 14. Be4 Bf6 15. h4 a4 16. Ng5 g6 17. Bg2 Bg7 18. h5 a3 19. hxg6 hxg6 20. Qg4 Nc2 21. Qh4 Rd8 22. Ne4 Rd4 23. Rb1 Qxc4 24. Nf6+ Kf8 25. Nh7+ Kg8 26. Nf6+ Kf8 27. Nh7+ Kg8 1/2-1/2

[Event "Bogota Distrital-ch 77th"]
[Site "Bogota"]
[Date "2015.05.03"]
[Round "6"]
[White "Valle, Efrain"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2138"]
[BlackElo "2287"]
[PlyCount "103"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. 0-0 Bf5 5. d3 e6 6. Nbd2 h6 7. c4 Be7 8. Qa4 Nbd7 9. cxd5 exd5 10. Nd4 Bg6 11. N2f3 c5 12. Nb5 a6 13. Nc3 d4 14. Nb1 b5 15. Qb3 Bf5 16. a4 Be6 17. Qd1 Bd5 18. Nh4 Bxg2 19. Kxg2 0-0 20. Nf5 Nb6 21. Nxe7+ Qxe7 22. axb5 axb5 23. Rxa8 Rxa8 24. Na3 Qe6 25. Qc2 b4 26. Nc4 Nxc4 27. dxc4 Re8 28. e3 Qc6+ 29. Kg1 Ng4 30. e4 f5 31. h3 Nf6 32. exf5 Qf3 33. Bf4 b3 34. Qd2 Re2 35. Qa5 d3 36. Qxc5 Kh7 37. Qd6 Rxb2 38. Be5 Rxf2 39. Rxf2 Qxf2+ 40. Kxf2 Ne4+ 41. Ke3 Nxd6 42. Kxd3 Nxf5 43. Kc3 Kg6 44. Kxb3 Kf7 45. Kc3 Ke6 46. Bb8 h5 47. Kd3 Ne7 48. Ke4 g6 49. Bf4 Nc6 50. Bc7 Kd7 51. Be5 Ke6 52. Bg7 1/2-1/2

[Event "Bogota Distrital-ch 77th"]
[Site "Bogota"]
[Date "2015.05.02"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Ceron, Juan Carlos"]
[Result "1-0"]
[ECO "C66"]
[WhiteElo "2287"]
[BlackElo "2068"]
[PlyCount "101"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Be7 5. Nc3 d6 6. d4 Bd7 7. Re1 Nxd4 8. Nxd4 exd4 9. Qxd4 Bxb5 10. Nxb5 0-0 11. Qc3 a6 12. Nd4 Nd7 13. Nf5 Bf6 14. Qg3 Kh8 15. Rb1 g6 16. Ne3 Bg7 17. Bd2 Nf6 18. Bc3 Nh5 19. Bxg7+ Nxg7 20. Rbd1 Nh5 21. Qf3 Qf6 22. Qxf6+ Nxf6 23. f3 Rfe8 24. g4 h6 25. Kf2 Kg7 26. Rd3 Rad8 27. h4 Re5 28. c4 b5 29. Rc1 Rb8 30. cxb5 Rexb5 31. b3 Ne8 32. Rc6 Ra8 33. Nd5 Ra7 34. Rdc3 Rbb7 35. g5 a5 36. Ke3 a4 37. b4 a3 38. Kd3 f6 39. gxf6+ Kf7 40. f4 Ke6 41. e5 Rb8 42. Ke4 Ra4 43. R3c4 h5 44. Nxc7+ Nxc7 45. Rxd6+ Kf7 46. Rxc7+ Kf8 47. Rd4 Rbxb4 48. Rxb4 Rxb4+ 49. Kd5 Rxf4 50. Ke6 Kg8 51. Rc8+ 1-0

[Event "Bogota Distrital-ch 77th"]
[Site "Bogota"]
[Date "2015.05.02"]
[Round "4"]
[White "Forero, Edwin Johann"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "1975"]
[BlackElo "2287"]
[PlyCount "100"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 Qc7 8. Qf3 h6 9. Bxf6 Nxf6 10. f5 g5 11. fxg6 fxg6 12. Be2 Bg7 13. Qg3 g5 14. 0-0-0 Bd7 15. Nd5 Qa5 16. Nb3 Qd8 17. Nxf6+ Bxf6 18. Bh5+ Kf8 19. e5 Bxe5 20. Rhf1+ Kg8 21. Bf7+ Kg7 22. Qd3 Bf4+ 23. Rxf4 gxf4 24. Qg6+ Kf8 25. Nd4 e5 26. Be6 Be8 27. Qf5+ Kg7 28. Nf3 Bg6 29. Qg4 h5 30. Qh3 Qb6 31. Qh4 Rhe8 32. Bd7 Qc7 33. Ba4 Rac8 34. Rd2 b5 35. Bb3 Qc5 36. Qe1 a5 37. Qd1 a4 38. Bd5 e4 39. Nh4 e3 40. Re2 Bxc2 41. Rxc2 Qxc2+ 42. Qxc2 e2 43. Nf3 e1Q+ 44. Nxe1 Rxe1+ 45. Kd2 Re2+ 46. Kxe2 Rxc2+ 47. Kf3 Rxb2 48. Kxf4 b4 49. Ke3 b3 50. axb3 a3 0-1

[Event "Bogota Distrital-ch 77th"]
[Site "Bogota"]
[Date "2015.05.01"]
[Round "3"]
[White "Acosta, Alejandro"]
[Black "Gomez Morales, Juan Sebastian"]
[Result "1-0"]
[ECO "B46"]
[WhiteElo "2287"]
[BlackElo "1850"]
[PlyCount "77"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nc6 6. Nxc6 bxc6 7. e5 Qc7 8. f4 Ne7 9. Bd3 Bb7 10. 0-0 c5 11. Be4 Nc6 12. Be3 Be7 13. Qh5 h6 14. Rad1 Nb4 15. Rd2 Bxe4 16. Nxe4 Nd5 17. Qf3 0-0 18. c4 Nxe3 19. Qxe3 f5 20. exf6 Bxf6 21. Nxc5 Qb6 22. Qf2 Be7 23. Nxd7 Qxf2+ 24. Rfxf2 Rfd8 25. Kf1 Bb4 26. Rd3 Ra7 27. Nf6+ gxf6 28. Rxd8+ Kf7 29. a3 Be7 30. Rc8 a5 31. c5 Rd7 32. Rc2 Rd8 33. Rxd8 Bxd8 34. c6 Bc7 35. Rd2 Ke8 36. g3 e5 37. f5 h5 38. Rd7 Bb6 39. Rb7 1-0

[Event "Bogota Distrital-ch 77th"]
[Site "Bogota"]
[Date "2015.05.01"]
[Round "2"]
[White "Salej, Jorge"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "2085"]
[BlackElo "2287"]
[PlyCount "60"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. e3 Nf6 5. b3 Nbd7 6. Bb2 Bd6 7. Bd3 0-0 8. 0-0 Qe7 9. Ne5 c5 10. f4 b6 11. Nd2 Bb7 12. Qe1 Ne4 13. Nxd7 Qxd7 14. Nxe4 dxe4 15. Bc2 cxd4 16. Bxd4 Qc7 17. Qg3 f6 18. Qh3 Rfe8 19. a3 Rad8 20. Rfd1 b5 21. Bxa7 bxc4 22. b4 Bc8 23. Ba4 e5 24. f5 Rf8 25. Rxd6 Qxa7 26. Rxd8 Rxd8 27. Bb5 c3 28. Bc4+ Kh8 29. g4 c2 30. Be2 Qxa3 0-1

[Event "Bogota Distrital-ch 77th"]
[Site "Bogota"]
[Date "2015.04.30"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Nieto, Manuel Valerio Wald"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "2287"]
[BlackElo "2086"]
[PlyCount "82"]
[EventDate "2015.04.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. Nge2 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Bd3 Nc6 7. Nxc6 dxc6 8. 0-0 e5 9. f4 Bc5+ 10. Kh1 Nf6 11. f5 b5 12. a4 Bb7 13. Qe2 Bb6 14. Bg5 b4 15. Nb1 a5 16. Nd2 Bd4 17. Rab1 h6 18. Bh4 Nd7 19. Bc4 Nb6 20. b3 Nxc4 21. Nxc4 Ba6 22. Rf3 f6 23. Rg3 0-0-0 24. Nd6+ Rxd6 25. Qxa6+ Kb8 26. Rd1 Rhd8 27. Rgd3 Qa7 28. Qxa7+ Kxa7 29. g4 Kb6 30. Kg2 c5 31. Kf3 c4 32. R3d2 Rc6 33. Ke2 Rdc8 34. Bf2 Bxf2 35. Kxf2 cxb3 36. cxb3 Rc3 37. Rd5 R8c5 38. Rxc5 Kxc5 39. Rd5+ Kb6 40. Rd6+ Kc5 41. Rd5+ Kb6 1/2-1/2

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2014.12.08"]
[Round "9"]
[White "Gonzalez Parejo, Ramon Junior"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "2129"]
[BlackElo "2323"]
[PlyCount "55"]
[EventDate "2014.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Be2 Nf6 4. c3 Nbd7 5. Qc2 b6 6. 0-0 Bb7 7. d3 c4 8. Nbd2 cxd3 9. Bxd3 g6 10. a4 a6 11. Nb3 Bg7 12. Rd1 Qc7 13. h3 0-0 14. Bf4 e5 15. Bh2 a5 16. Nfd2 d5 17. Nd4 Nc5 18. Nb5 Qe7 19. exd5 Nxd3 20. d6 Qd7 21. Qxd3 Qc6 22. Qf1 Nd7 23. Nc4 Ba6 24. Ne3 Rad8 25. Nd5 Kh8 26. Ne7 Qb7 27. b4 f5 28. Qc4 1/2-1/2

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2014.12.07"]
[Round "7"]
[White "Gutierrez, Ramon"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "2136"]
[BlackElo "2323"]
[PlyCount "83"]
[EventDate "2014.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. b4 cxb4 4. d4 d5 5. exd5 Qxd5 6. c4 bxc3 7. Nxc3 Qa5 8. Bd2 Nf6 9. Bb5 e6 10. d5 exd5 11. Nxd5 Qd8 12. Nxf6+ Qxf6 13. 0-0 Be7 14. Re1 h6 15. Qe2 Be6 16. Ne5 0-0 17. Bxc6 bxc6 18. Nxc6 Ba3 19. Qa6 Bc5 20. Be3 Bxe3 21. fxe3 Rfe8 22. Nd4 Qg5 23. Nf3 Qh5 24. Rac1 Bg4 25. Nd4 Qg5 26. Qa3 Re5 27. Rc3 Rd8 28. Qc1 Rd6 29. Rf1 Bh3 30. Rf2 Rf6 31. Qd2 Rxf2 32. Qxf2 Qg6 33. Qc2 Rg5 34. Qxg6 Rxg6 35. Rc2 Kf8 36. Kf1 Be6 37. Nxe6+ Rxe6 38. Rc8+ Ke7 39. Rc7+ Kf6 40. Rxa7 Rxe3 41. Kf2 Rc3 42. a4 1/2-1/2

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2014.12.06"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Vallejo, Humberto"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "2323"]
[BlackElo "2062"]
[PlyCount "90"]
[EventDate "2014.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 c5 4. c4 Nb4 5. d5 d6 6. e6 fxe6 7. a3 Qa5 8. Nc3 exd5 9. Bd2 N4c6 10. Nxd5 Qd8 11. Bd3 Ne5 12. Bc2 e6 13. Ne3 Nbc6 14. Bc3 g6 15. h4 Bh6 16. h5 Bxe3 17. fxe3 Qg5 18. Qe2 Qg3+ 19. Kd2 0-0 20. Rf1 Rxf1 21. Qxf1 Nxc4+ 22. Qxc4 Qxg2+ 23. Ne2 Qxh1 24. hxg6 hxg6 25. Qf4 Qd5+ 26. Kc1 e5 27. Qg5 Qh1+ 28. Kd2 Qh5 29. Qf6 Bf5 30. Bb3+ Kh7 31. Qf7+ Kh6 32. Qxb7 Rc8 33. Bd5 Nd4 34. exd4 cxd4 35. Qxa7 dxc3+ 36. bxc3 Rc5 37. Qa8 Qg5+ 38. Ke1 Bc8 39. c4 e4 40. Qa7 e3 41. Qf7 Qh4+ 42. Kd1 Qf2 43. Qxf2 exf2 44. Ng3 Rxd5+ 45. cxd5 Ba6 0-1

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2014.12.05"]
[Round "3"]
[White "Martinez, Mauricio"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "A49"]
[WhiteElo "1995"]
[BlackElo "2323"]
[PlyCount "122"]
[EventDate "2014.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Nbd2 d6 5. g3 0-0 6. Bg2 Nbd7 7. 0-0 e5 8. dxe5 dxe5 9. Nc4 Qe7 10. b3 Re8 11. Ba3 Qe6 12. Ng5 Qa6 13. Bd5 Nxd5 14. Qxd5 Qf6 15. f4 Nb6 16. Nxb6 Qxb6+ 17. Bc5 Be6 18. Nxe6 Qxe6 19. Rad1 b6 20. Qxe6 Rxe6 21. f5 Rc6 22. Ba3 Rxc3 23. fxg6 hxg6 24. Rd7 f6 25. Be7 Rc6 26. e4 a5 27. Bd8 Rc8 28. g4 Rd6 29. Rxd6 cxd6 30. Bxf6 a4 31. Be7 axb3 32. axb3 Rc3 33. b4 Rc4 34. Bxd6 Rxe4 35. h3 Rd4 36. Be7 e4 37. g5 e3 38. Kg2 Re4 39. Bf6 Bxf6 40. gxf6 Rxb4 41. f7+ Kf8 42. Rf6 g5 43. Rg6 Rb5 44. Re6 Rb2+ 45. Kf3 e2 46. Kf2 Kxf7 47. Rc6 b5 48. Rd6 Ke7 49. Rc6 b4 50. Rb6 b3 51. Ke1 Kd7 52. Rb5 Kc6 53. Rb8 Kd5 54. Rb5+ Ke4 55. Rb4+ Kf5 56. Rb8 Rb1+ 57. Kxe2 b2 58. Kd2 Rh1 59. Rxb2 Rh2+ 60. Kc1 Rxb2 61. Kxb2 Kf4 0-1

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2014.12.04"]
[Round "2"]
[White "Acosta, Alejandro"]
[Black "Rivera, Alberto"]
[Result "1/2-1/2"]
[ECO "C84"]
[WhiteElo "2323"]
[BlackElo "2324"]
[PlyCount "62"]
[EventDate "2014.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. 0-0 Be7 7. e5 Ne4 8. Nxd4 0-0 9. Nf5 d5 10. Bxc6 bxc6 11. Nxe7+ Qxe7 12. Re1 Re8 13. f3 Nd6 14. Bf4 f6 15. Nc3 fxe5 16. Rxe5 Be6 17. Re2 Qf8 18. Bxd6 cxd6 19. Qd3 Bd7 20. Rae1 Bf5 21. Qd2 Rab8 22. b3 Qf7 23. Kf2 Qg6 24. Rxe8+ Rxe8 25. Rxe8+ Qxe8 26. Ne2 Qe7 27. h3 Qh4+ 28. Kf1 Qe7 29. g4 Bd7 30. Kf2 Qe5 31. f4 Qe7 1/2-1/2

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.08"]
[Round "8"]
[White "Acosta, Alejandro"]
[Black "Dominguez, Oscar Alberto"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "2309"]
[BlackElo "2111"]
[PlyCount "63"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. f4 Nc6 7. Ndf3 Qb6 8. g3 cxd4 9. cxd4 Be7 10. Kf2 0-0 11. Kg2 f6 12. Bd3 a5 13. Bb1 Kh8 14. Ne2 fxe5 15. fxe5 Ndxe5 16. dxe5 Nxe5 17. Nxe5 Rf2+ 18. Kh3 Bf6 19. Nf4 g6 20. Re1 Qc7 21. Qd4 Bxe5 22. Rxe5 Rf1 23. Be3 Kg8 24. Kg2 Rxb1 25. Rxb1 Qc2+ 26. Bd2 Qxb1 27. Bc3 Kf7 28. Re1 Qf5 29. Qg7+ Ke8 30. Bf6 Qc2+ 31. Re2 Qc5 32. Nxe6 1-0

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.08"]
[Round "9"]
[White "Santiago, Yago de Moura"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2450"]
[BlackElo "2309"]
[PlyCount "102"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4 dxe4 5. Nxe4 Bb4+ 6. Nc3 c5 7. Nf3 Nf6 8. a3 Ba5 9. Be2 Ne4 10. Bd2 Bxc3 11. Bxc3 Nc6 12. 0-0 0-0 13. Bd3 Nxc3 14. bxc3 b6 15. Qe2 Bb7 16. Rfd1 Qf6 17. Qe3 Na5 18. Ne5 cxd4 19. cxd4 Rfd8 20. Rac1 g6 21. Be2 Rac8 22. Ng4 Qg7 23. h4 h5 24. Ne5 Nc6 25. f4 Rc7 26. Bf3 Nxe5 27. fxe5 Bxf3 28. gxf3 Rdc8 29. d5 exd5 30. Rxd5 Rxc4 31. Rxc4 Rxc4 32. Rd8+ Kh7 33. Rd7 Rc6 34. Rxa7 Re6 35. f4 Qf8 36. Kg2 Kg7 37. Qd4 Qc8 38. Kg3 Qc1 39. Kg2 Qc2+ 40. Qf2 Qf5 41. Qf3 Qc2+ 42. Qf2 Qc1 43. Qd4 Qc6+ 44. Kg1 Qf3 45. Qc4 Qg4+ 46. Kf1 b5 47. Qe4 Qxh4 48. Qf3 Qh2 49. Rb7 Qc2 50. Qe2 Qc1+ 51. Kg2 Rc6 0-1

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.07"]
[Round "6"]
[White "Acosta, Alejandro"]
[Black "Moreno Lozano, David"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2309"]
[BlackElo "1912"]
[PlyCount "81"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. h3 Nf6 5. g4 0-0 6. Bg2 e5 7. Nge2 Nbd7 8. Be3 h5 9. f3 Re8 10. d5 Nh7 11. gxh5 Qh4+ 12. Kf1 g5 13. Nb5 Ndf8 14. Nxc7 Bd7 15. Qd2 f5 16. Bf2 Qxh5 17. Ng3 Qf7 18. Ke2 f4 19. Nf1 Bxh3 20. Bxh3 Qxc7 21. Nh2 Kf7 22. Bf5 Nf6 23. b3 N8h7 24. Rag1 Rh8 25. c4 a6 26. Kd3 Nd7 27. Ke2 Rac8 28. Rc1 Rcd8 29. Kf1 Nhf6 30. Kg2 b6 31. Ng4 Nxg4 32. Bxg4 Rxh1 33. Rxh1 Rh8 34. Rxh8 Bxh8 35. Qd1 Nc5 36. Qh1 Qd8 37. Qh7+ Kf6 38. b4 Na4 39. Qh6+ Kf7 40. Be6+ Ke7 41. Qh7+ 1-0

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.06"]
[Round "4"]
[White "Acosta, Alejandro"]
[Black "Cadena, Juan Manuel"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2309"]
[BlackElo "2096"]
[PlyCount "61"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. 0-0 0-0 8. c4 c6 9. cxd5 cxd5 10. Nc3 Re8 11. Re1 Nxc3 12. Rxe8+ Qxe8 13. bxc3 h6 14. Qb3 Qd8 15. Bd2 b6 16. Re1 Be6 17. g3 Nd7 18. Nh4 Nf6 19. Bf5 Bxf5 20. Nxf5 Qd7 21. Nxd6 Qxd6 22. f3 Qd7 23. Re5 Re8 24. Bf4 g5 25. Rxe8+ Nxe8 26. Be3 Qe6 27. Bf2 Nd6 28. Qa4 Nc4 29. Qc2 Kg7 30. g4 b5 31. Qd3 1/2-1/2

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.06"]
[Round "5"]
[White "Bolivar, Jeison"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2086"]
[BlackElo "2309"]
[PlyCount "47"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 e6 5. Nge2 Nxe2 6. Qxe2 a6 7. Qe3 Ne7 8. d4 b5 9. Be2 cxd4 10. Qxd4 Nc6 11. Qe3 Qc7 12. Bd2 Be7 13. a3 0-0 14. 0-0 Bb7 15. Kh1 Ne5 16. Qg3 d6 17. Rad1 Rac8 18. Bh6 Ng6 19. Bg5 Bxg5 20. Qxg5 Ne5 21. Qg3 Rfd8 22. Rd2 h6 23. Rfd1 Qc5 24. Rd4 1/2-1/2

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.05"]
[Round "3"]
[White "Gaviria Galvis, Andres Felipe"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B83"]
[WhiteElo "2027"]
[BlackElo "2309"]
[PlyCount "90"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. 0-0 Be7 8. a4 Nc6 9. Be3 0-0 10. Nb3 b6 11. f3 Qc7 12. Rf2 Nb4 13. a5 b5 14. Bf1 d5 15. Bb6 Qb8 16. Qe1 Bb7 17. Bc5 Bxc5 18. Nxc5 dxe4 19. N3xe4 Nbd5 20. c4 bxc4 21. Bxc4 Qa7 22. Kh1 Nxe4 23. Nxe4 Ne3 24. Nd6 Bd5 25. Bxd5 exd5 26. Re2 d4 27. Rc1 f5 28. Qd2 Kh8 29. Ree1 Rad8 30. Nc4 f4 31. Qd3 Qe7 32. Nxe3 dxe3 33. Qxa6 Rd2 34. Rc8 h6 35. Rxf8+ Qxf8 36. Qe6 Qd8 37. h3 Rxg2 38. Rxe3 fxe3 39. Kxg2 Qd2+ 40. Kg3 Qf2+ 41. Kg4 h5+ 42. Kxh5 Qxf3+ 43. Kh4 Kh7 44. a6 e2 45. a7 e1Q+ 0-1

[Event "Bogota McGregor op 4th"]
[Site "Bogota"]
[Date "2013.12.04"]
[Round "1"]
[White "Gonzalez Vidal, Yuri"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "D34"]
[WhiteElo "2534"]
[BlackElo "2309"]
[PlyCount "57"]
[EventDate "2013.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 c5 5. cxd5 exd5 6. Bg2 Nc6 7. Nc3 Be7 8. 0-0 0-0 9. Bg5 cxd4 10. Nxd4 h6 11. Be3 Re8 12. Qa4 Bd7 13. Qb3 Na5 14. Qc2 Bg4 15. Nf5 Bf8 16. Bd4 Rc8 17. Ne3 Be6 18. Rad1 Ng4 19. Bxa7 Nc6 20. Bxd5 Qg5 21. Bxe6 Rxe6 22. Rd5 Qe7 23. Nxg4 Nxa7 24. Rfd1 Nc6 25. Rd7 Qg5 26. Ne3 Rxe3 27. fxe3 Qxe3+ 28. Kg2 Ne5 29. Rd8 1-0

[Event "Bogota Verano op"]
[Site "Bogota"]
[Date "2013.08.18"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Lozano Ramirez, Nestor Favian"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2308"]
[BlackElo "2145"]
[PlyCount "49"]
[EventDate "2013.08.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Bb5 Nc6 6. Bxc6 bxc6 7. e5 Nd5 8. Nxd5 cxd5 9. Qxd5 Rb8 10. e6 f6 11. exd7+ Bxd7 12. Nf3 Qc7 13. 0-0 Bc6 14. Qc4 Qb7 15. Re1 Bd5 16. Qe2 Bg7 17. c4 Bf7 18. b3 e5 19. Ba3 Rd8 20. Rad1 a6 21. Rxd8+ Kxd8 22. Qe3 Kc8 23. Bd6 Rd8 24. Qc5+ Kd7 25. Be7 1-0

[Event "Bogota Verano op"]
[Site "Bogota"]
[Date "2013.08.18"]
[Round "4"]
[White "Manrique, Fernando"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "1965"]
[BlackElo "2308"]
[PlyCount "48"]
[EventDate "2013.08.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 Qc7 8. Qf3 h6 9. Bxf6 Nxf6 10. 0-0-0 Bg4 11. Nd5 Nxd5 12. Qxg4 Ne3 13. Qf3 Nxd1 14. Qxd1 e5 15. Ne2 Be7 16. f5 d5 17. exd5 e4 18. Nc3 0-0 19. Qg4 Rac8 20. Qxe4 Bg5+ 21. Kd1 Rfe8 22. Qb4 Qe5 23. Bd3 Rxc3 24. Qxc3 Qe3 0-1

[Event "Bogota Verano op"]
[Site "Bogota"]
[Date "2013.08.17"]
[Round "3"]
[White "Acosta, Alejandro"]
[Black "Borbon, Oscar"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2308"]
[BlackElo "1974"]
[PlyCount "45"]
[EventDate "2013.08.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ndf6 6. Nxf6+ Nxf6 7. Bg5 Be7 8. Bd3 0-0 9. Qe2 c5 10. dxc5 Qa5+ 11. c3 Qxc5 12. 0-0 h6 13. Be3 Qc7 14. Bd4 b6 15. Rfe1 Bb7 16. Rad1 Bd6 17. Bxf6 gxf6 18. Be4 Bxe4 19. Qxe4 f5 20. Qh4 Kg7 21. Nd4 Bf4 22. Rxe6 Bg5 23. Nxf5+ 1-0

[Event "Bogota Verano op"]
[Site "Bogota"]
[Date "2013.08.17"]
[Round "2"]
[White "Buitrago, Bernardo"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1871"]
[BlackElo "2308"]
[PlyCount "54"]
[EventDate "2013.08.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 c5 2. d3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 d6 6. 0-0 e5 7. c3 Nge7 8. Be3 f5 9. Qd2 h6 10. Na3 Be6 11. Nc2 Qd7 12. Rfd1 g5 13. exf5 Nxf5 14. d4 Nxe3 15. Qxe3 Bf5 16. Na3 cxd4 17. Nxd4 Nxd4 18. cxd4 0-0 19. dxe5 Bxe5 20. Nc4 Bg7 21. Nxd6 Kh8 22. Nxf5 Qxf5 23. Rab1 Rae8 24. Qd2 Qb5 25. Qd3 Re1+ 26. Bf1 Qxd3 27. Rxe1 Qc2 0-1

[Event "Bogota Verano op"]
[Site "Bogota"]
[Date "2013.08.16"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Ribero, Guillermo Andres"]
[Result "1/2-1/2"]
[ECO "B60"]
[WhiteElo "2308"]
[BlackElo "1777"]
[PlyCount "42"]
[EventDate "2013.08.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 Nf6 4. d4 cxd4 5. Nxd4 d6 6. Bg5 Qa5 7. Bxf6 gxf6 8. Nb3 Qe5 9. g3 Rg8 10. f4 Qe6 11. Nd4 Qg4 12. Be2 Qh3 13. Ndb5 Rxg3 14. Nc7+ Kd8 15. Nxa8 Rxc3 16. bxc3 Qh4+ 17. Kf1 Bh3+ 18. Kg1 Qxf4 19. Qd3 Qg5+ 20. Qg3 Qc5+ 21. Qf2 Qg5+ 1/2-1/2

[Event "Bogota District final"]
[Site "Bogota"]
[Date "2013.04.15"]
[Round "8"]
[White "Barrientos Chavarriaga, Sergio E"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B37"]
[WhiteElo "2452"]
[BlackElo "2304"]
[PlyCount "77"]
[EventDate "2013.04.11"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 d6 7. Nc2 Bg7 8. Be2 Nd7 9. Bd2 0-0 10. 0-0 a5 11. Na3 Nc5 12. Nab5 f5 13. exf5 Bxf5 14. Be3 Nb4 15. Nd4 Bxd4 16. Bxd4 Nc2 17. Rc1 Nxd4 18. Qxd4 Be6 19. Rfe1 Bf7 20. Rcd1 Ra6 21. b3 Qb6 22. Bf3 e5 23. Qe3 a4 24. Nb5 axb3 25. axb3 Rd8 26. h4 Ne6 27. Qd2 Kg7 28. Bd5 Rd7 29. Bxe6 Bxe6 30. h5 Bg4 31. h6+ Kf8 32. Rc1 Rf7 33. Re3 Bd7 34. Rd3 Rf6 35. Nc3 Qb4 36. Qg5 Rf7 37. Nd5 Qc5 38. Qd8+ Be8 39. Rf3 1-0

[Event "Bogota District final"]
[Site "Bogota"]
[Date "2013.04.14"]
[Round "6"]
[White "Ruiz Castillo, Joshua Daniel"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2357"]
[BlackElo "2304"]
[PlyCount "57"]
[EventDate "2013.04.11"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 d6 7. 0-0 Nf6 8. a4 b4 9. Na2 e5 10. Ne2 Nc6 11. c3 bxc3 12. Naxc3 Be7 13. Nd5 Nxd5 14. exd5 Nb4 15. Bc4 a5 16. Nc3 0-0 17. f4 exf4 18. Bxf4 Bf5 19. Qd2 Bg6 20. Nb5 Re8 21. Kh1 Na6 22. Nd4 Bf6 23. Bb5 Re4 24. Nc6 Qb6 25. Bxd6 Nc5 26. Bxc5 Qxc5 27. Rxf6 gxf6 28. d6 Ree8 29. d7 1-0

[Event "Bogota District final"]
[Site "Bogota"]
[Date "2013.04.13"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Ramirez, Jaime Orlando"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2304"]
[BlackElo "2027"]
[PlyCount "53"]
[EventDate "2013.04.11"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 Ke8 10. h3 h5 11. Bg5 Be7 12. Rad1 a5 13. Rfe1 Be6 14. a3 h4 15. Bxe7 Kxe7 16. Ne2 Rad8 17. Ned4 Rd5 18. c3 Rh5 19. Nxf5+ Bxf5 20. Nd4 Bd7 21. f4 c5 22. Nf5+ Rxf5 23. Rxd5 b6 24. Rf1 g5 25. fxg5 Rxg5 26. Rxf7+ Kxf7 27. e6+ 1-0

[Event "Bogota District final"]
[Site "Bogota"]
[Date "2013.04.12"]
[Round "3"]
[White "Acosta, Alejandro"]
[Black "Ramirez, Carlos"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2304"]
[BlackElo "2308"]
[PlyCount "53"]
[EventDate "2013.04.11"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Qxd5 5. Nc3 Qd6 6. d4 Nf6 7. Bc4 e6 8. Nf3 Be7 9. 0-0 0-0 10. Qe2 a6 11. Rd1 b5 12. Bb3 Bb7 13. Bg5 Nbd7 14. d5 exd5 15. Nxd5 Bxd5 16. Bxd5 Nxd5 17. Bxe7 Qxe7 18. Qxe7 Nxe7 19. Rxd7 Ng6 20. Rc1 Rfd8 21. Rcc7 Rxd7 22. Rxd7 Rc8 23. g3 f6 24. Nd4 Ne5 25. Ra7 Rc4 26. Nf5 g6 27. Ra8+ 1-0

[Event "Bogota District final"]
[Site "Bogota"]
[Date "2013.04.11"]
[Round "1"]
[White "Pinzon, Jairo David"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2206"]
[BlackElo "2304"]
[PlyCount "70"]
[EventDate "2013.04.11"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 c6 2. e4 d5 3. cxd5 cxd5 4. e5 Nc6 5. d4 Bf5 6. Bd3 Bxd3 7. Qxd3 e6 8. Ne2 Qb6 9. Nbc3 Nge7 10. 0-0 Rd8 11. Na4 Qc7 12. Bd2 Nf5 13. Rac1 Be7 14. b4 Qd7 15. b5 Nb4 16. Bxb4 Bxb4 17. Nc5 Qe7 18. a3 Ba5 19. Nb3 Bb6 20. Ra1 0-0 21. a4 Rc8 22. a5 Bd8 23. Ng3 Nxg3 24. hxg3 b6 25. axb6 Bxb6 26. Na5 Bxa5 27. Rxa5 Rc4 28. Rb1 Rfc8 29. Qa3 Qg5 30. f4 Qg6 31. Rd1 Rc3 32. Qb2 Rc2 33. Qb3 R8c3 34. Rxa7 h5 35. Ra3 Qe4 0-1

[Event "Bogota McGregor op 3rd"]
[Site "Bogota"]
[Date "2012.12.15"]
[Round "7"]
[White "Leon Archibaldo, Orlando Andres"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2059"]
[BlackElo "2331"]
[PlyCount "43"]
[EventDate "2012.12.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 g6 4. g3 Bg7 5. Bg2 d6 6. 0-0 e5 7. Nd5 Nge7 8. Nec3 h5 9. d3 Nxd5 10. Nxd5 Bg4 11. f3 Be6 12. f4 exf4 13. gxf4 h4 14. f5 Bd4+ 15. Kh1 h3 16. Bf3 gxf5 17. exf5 Bxf5 18. Bh5 Be6 19. Nf4 Qg5 20. Qf3 Rxh5 21. Nxh5 Bd5 22. Bxg5 1-0

[Event "Bogota McGregor op 3rd"]
[Site "Bogota"]
[Date "2012.12.14"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Abril Guiza, Mauricio"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2331"]
[BlackElo "1975"]
[PlyCount "56"]
[EventDate "2012.12.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e5 4. Nd5 Nf6 5. Nec3 Be7 6. Bc4 d6 7. d3 Be6 8. f4 exf4 9. Bxf4 0-0 10. 0-0 Nd4 11. Nxe7+ Qxe7 12. Bg5 Kh8 13. e5 dxe5 14. Ne4 Bf5 15. Rxf5 Nxf5 16. Qf1 Qd7 17. Nxf6 Qd4+ 18. Kh1 gxf6 19. Qxf5 fxg5 20. Qf6+ Kg8 21. Qxg5+ Kh8 22. Qf6+ Kg8 23. Rf1 e4 24. Bxf7+ Rxf7 25. Qxf7+ Kh8 26. Qxb7 Rd8 27. Qe7 Kg8 28. dxe4 Qd6 1-0

[Event "Bogota McGregor op 3rd"]
[Site "Bogota"]
[Date "2012.12.12"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Cardozo Munar, Carlos Eduardo"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2331"]
[BlackElo "1948"]
[PlyCount "71"]
[EventDate "2012.12.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. 0-0 Ngf6 8. Neg5 Bd6 9. Re1 Bxf3 10. Qxf3 b6 11. Qh3 a6 12. Bg6 hxg6 13. Qxh8+ Bf8 14. Qh3 Bd6 15. Bd2 Nf8 16. c4 c6 17. Rad1 Qc7 18. Bc3 Bf4 19. Ne4 0-0-0 20. g3 Nxe4 21. Rxe4 Bg5 22. Ree1 Kb7 23. Qg2 Bf6 24. d5 Bxc3 25. dxc6+ Kb8 26. bxc3 Rc8 27. c5 Nh7 28. Rd7 Qxc6 29. Qxc6 Rxc6 30. Rb1 b5 31. c4 Rxc5 32. cxb5 axb5 33. Rxf7 Ng5 34. Rxg7 Nf3+ 35. Kg2 Ne5 36. a4 1-0

[Event "Bogota McGregor op 3rd"]
[Site "Bogota"]
[Date "2012.12.12"]
[Round "2"]
[White "Cordova, Emilio"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "D50"]
[WhiteElo "2568"]
[BlackElo "2331"]
[PlyCount "53"]
[EventDate "2012.12.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 c6 5. a3 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. Bg3 Nd5 10. h4 Rg8 11. hxg5 hxg5 12. Rh7 Nxc3 13. Qh5 Rg7 14. Rxg7 Bxg7 15. bxc3 Nd7 16. Nh3 Qa5 17. Rc1 Qxa3 18. Qxg5 Bf8 19. Be2 Be7 20. Qg8+ Nf8 21. Bf4 b4 22. Ng5 b3 23. Qxf7+ Kd8 24. Ne4 b2 25. Rb1 Bd7 26. Nd6 Rb8 27. Qxe7+ 1-0

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.10"]
[Round "8"]
[White "Acosta, Alejandro"]
[Black "Diaz, Jaime Walter"]
[Result "1/2-1/2"]
[ECO "B27"]
[WhiteElo "2302"]
[BlackElo "2175"]
[PlyCount "104"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Nf3 Nc6 6. Qa4 d6 7. e5 dxe5 8. Nxe5 Bd7 9. Nxd7 Nxd7 10. Bb5 Qc8 11. 0-0 Bg7 12. Re1 e6 13. Ne4 0-0 14. Nd6 Qc7 15. Bxc6 bxc6 16. Nc4 Nb6 17. Qa5 Rfd8 18. Be3 Rab8 19. Nxb6 axb6 20. Qa3 Rd5 21. c3 b5 22. g3 c5 23. Rad1 b4 24. cxb4 cxb4 25. Qb3 Rxd1 26. Rxd1 Bf8 27. Bf4 e5 28. Be3 Rd8 29. Rc1 Qd7 30. a3 bxa3 31. bxa3 Ra8 32. Ra1 Qa4 33. Qd5 Ra5 34. Qb7 Qe8 35. Rc1 Qa8 36. Qd7 Rd5 37. Qc7 Qxa3 38. Qb8 Qd6 39. Qb3 Rd3 40. Qa4 Qd5 41. h4 h5 42. Qe8 Rd1+ 43. Rxd1 Qxd1+ 44. Kh2 Qd6 45. Bh6 Qe7 46. Qb8 f6 47. Qa8 Qf7 48. Qd8 Qe7 49. Qa8 Qf7 50. Qc8 Qe7 51. Qb8 Qf7 52. Qa8 Qe7 1/2-1/2

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.10"]
[Round "4"]
[White "Acosta, Alejandro"]
[Black "Mendoza, Rafael Enrique"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "2302"]
[BlackElo "2343"]
[PlyCount "83"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. Nc3 e6 4. d4 cxd4 5. Nxd4 Qc7 6. Be2 Nf6 7. 0-0 d6 8. a4 b6 9. f4 Bb7 10. Bf3 Nbd7 11. Qe2 g6 12. Kh1 e5 13. Nb3 Bg7 14. Be3 0-0 15. Rad1 exf4 16. Bxf4 Ne5 17. Be3 Rfe8 18. Qd2 Nc4 19. Qc1 Nxe3 20. Qxe3 d5 21. e5 Rxe5 22. Qf4 Rae8 23. Nc1 R8e7 24. Nd3 Rf5 25. Qxc7 Rxc7 26. Nb4 Rd7 27. Ne2 h5 28. Nd4 Re5 29. a5 bxa5 30. Nbc6 Re8 31. Nxa5 Ba8 32. Ndb3 Rc7 33. c3 Ng4 34. Bxg4 hxg4 35. Nd4 f5 36. Kg1 Re4 37. Nab3 Rc8 38. Ra1 Bb7 39. Ra5 Bf8 40. Rd1 Kf7 41. Kf2 Bd6 42. Rh1 0-1

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.10"]
[Round "10"]
[White "Acosta, Alejandro"]
[Black "Valderrama Espinosa, Gilberto"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2302"]
[BlackElo "2243"]
[PlyCount "134"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. 0-0 0-0 8. c4 Bg4 9. Nc3 Nxc3 10. bxc3 dxc4 11. Bxc4 Nd7 12. Qd3 Bh5 13. Bg5 Be7 14. Bf4 Bd6 15. Bxd6 cxd6 16. Bb3 Qf6 17. Nd2 Bg6 18. Qb5 Nb6 19. a4 Qf4 20. Nf3 Be4 21. Qg5 Qxg5 22. Nxg5 Bd5 23. Rfb1 Bxb3 24. Rxb3 Rab8 25. Ne4 Nc4 26. Rb4 Rfc8 27. a5 f5 28. Ng3 g6 29. h4 a6 30. h5 Kf7 31. Ne2 g5 32. f3 d5 33. Kf2 Re8 34. Nc1 Re7 35. Nd3 Rbe8 36. Ra2 f4 37. Nc5 Ne3 38. Rxb7 Nd1+ 39. Kf1 Rxb7 40. Nxb7 Rb8 41. Nc5 Rb1 42. Ra3 Nxc3+ 43. Kf2 Nb5 44. Ra2 Nc3 45. Rc2 Nd1+ 46. Ke2 Ne3 47. Ra2 Rg1 48. Kd3 Rd1+ 49. Kc3 Rc1+ 50. Kb3 Rb1+ 51. Ka4 Nd1 52. Rc2 Nb2+ 53. Ka3 Nc4+ 54. Ka2 Rb5 55. Nb3 h6 56. Rc1 Rb4 57. Re1 Ra4+ 58. Kb1 Ra3 59. Nc5 Rxa5 60. Ne6 Ne3 61. Nd8+ Ke8 62. Nc6 Rb5+ 63. Kc1 Rb6 64. Ne5 Rb4 65. g3 Rxd4 66. gxf4 gxf4 67. Rg1 a5 1/2-1/2

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.10"]
[Round "11"]
[White "Barros, Raul Junior"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2217"]
[BlackElo "2302"]
[PlyCount "47"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Nc6 7. Be3 Be7 8. 0-0 0-0 9. Kh1 a6 10. f4 Qc7 11. Bf3 Rb8 12. Qe1 Bd7 13. Rd1 b5 14. Qg3 Nxd4 15. Bxd4 b4 16. e5 Ne8 17. Ne4 d5 18. Nf6+ Bxf6 19. exf6 g6 20. Be5 Nd6 21. f5 Rb6 22. Qg5 Rc8 23. Qh6 Nxf5 24. Bxc7 1-0

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.10"]
[Round "5"]
[White "Lora, Joel Fernando"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2169"]
[BlackElo "2302"]
[PlyCount "106"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 Bf5 4. Bg2 e6 5. 0-0 Be7 6. Nh4 Bg4 7. c4 c6 8. cxd5 cxd5 9. Nf3 Nc6 10. Nc3 0-0 11. Bf4 Rc8 12. Ne5 Nxe5 13. Bxe5 Qb6 14. Qd2 Qa6 15. f3 Bh5 16. Rfc1 Nd7 17. e4 dxe4 18. Nxe4 Nxe5 19. dxe5 Bg6 20. Rxc8 Rxc8 21. f4 Qb6+ 22. Kh1 Rd8 23. Qe2 h6 24. h4 Qd4 25. Nc3 Qb4 26. Rd1 Rxd1+ 27. Nxd1 Bc5 28. Bf3 Qd4 29. Kg2 Bd3 30. Qf2 Qb4 31. a3 Qc4 32. Qd2 Bf1+ 33. Kh2 Bd3 34. b4 Bb6 35. Nb2 Qc2 36. Qxc2 Bxc2 37. Bxb7 Bd4 38. Nc4 Ba4 39. Be4 Bb5 40. Nd6 Bd7 41. b5 Kf8 42. Bc6 Ke7 43. Bxd7 Kxd7 44. Nxf7 Bc5 45. a4 Kc7 46. g4 Be7 47. Kg3 Kb6 48. f5 Ka5 49. fxe6 Kxa4 50. Nd6 Kb4 51. Nc8 Bc5 52. Nxa7 Kc4 53. Nc6 Ba7 1-0

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.10"]
[Round "7"]
[White "Polo, Victor Ramon"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2171"]
[BlackElo "2302"]
[PlyCount "41"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Nd2 Qb6 6. Qb3 c4 7. Qxb6 axb6 8. a3 b5 9. Rc1 Bf5 10. h3 Nd7 11. g4 Bg6 12. Bg2 e6 13. Bg3 Nb6 14. e4 Na4 15. Rc2 b4 16. axb4 Bxb4 17. Ne2 Be7 18. Nf4 Nb6 19. 0-0 0-0 20. Nxg6 hxg6 21. Bc7 1/2-1/2

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.10"]
[Round "9"]
[White "Saladen Dulce, Rafael"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "2212"]
[BlackElo "2302"]
[PlyCount "60"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. Nf3 dxc4 5. a4 Bb4 6. e3 b5 7. Be2 Bb7 8. 0-0 a6 9. Ne5 Nd7 10. f4 Ngf6 11. Bf3 Qb6 12. Kh1 0-0 13. e4 Rfd8 14. Be3 c5 15. axb5 axb5 16. Rxa8 Bxa8 17. Nxd7 Rxd7 18. e5 Bxf3 19. Qxf3 cxd4 20. exf6 dxe3 21. Ne4 g6 22. Ra1 Rd8 23. h4 h5 24. g4 hxg4 25. Qxg4 Qd4 26. Qg2 Qd5 27. Qf3 Qd3 28. h5 e2 29. Qg2 Qd1+ 30. Kh2 e1Q 0-1

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.09"]
[Round "2"]
[White "Acosta, Alejandro"]
[Black "Sierra Fonseca, Edwin Andres"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2302"]
[BlackElo "2136"]
[PlyCount "52"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Be7 8. c4 Nb4 9. Be2 0-0 10. Nc3 Bf5 11. a3 Nxc3 12. bxc3 Nc6 13. Re1 Bf6 14. Bf4 Rc8 15. Bd3 Bxd3 16. Qxd3 dxc4 17. Qxc4 Na5 18. Qa2 c5 19. Rad1 cxd4 20. cxd4 Nc4 21. d5 Re8 22. Rxe8+ Qxe8 23. d6 Qd7 24. h3 h6 25. Qb3 b5 26. Ra1 a6 1/2-1/2

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.09"]
[Round "3"]
[White "Avila, Pedro Andres"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2101"]
[BlackElo "2302"]
[PlyCount "36"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 d6 6. f4 Nc6 7. Nf3 Bg4 8. Be2 e6 9. Nc3 dxe5 10. Nxd5 Qxd5 11. dxe5 Qe4 12. Qd3 Bb4+ 13. Kf2 Qxd3 14. Bxd3 0-0-0 15. Be4 Bxf3 16. gxf3 Bc5+ 17. Be3 Rd2+ 18. Ke1 Rd4 0-1

[Event "Pamplona IRT rap op"]
[Site "Pamplona"]
[Date "2012.11.09"]
[Round "1"]
[White "Botello, Gregory Paul"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "1980"]
[BlackElo "2302"]
[PlyCount "94"]
[EventDate "2012.11.09"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 151 Extra"]
[Source "ChessBase"]
[SourceDate "2012.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2012.12.18"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. 0-0 Nxe4 5. Bd5 Nf6 6. Bxc6 dxc6 7. Nxe5 Bd6 8. Re1 0-0 9. Nc4 Bg4 10. f3 Bc5+ 11. Kh1 Be6 12. d3 Nd5 13. Nc3 Nxc3 14. bxc3 Bxc4 15. dxc4 Qh4 16. Be3 Rad8 17. Qc1 Qxc4 18. Qb2 b6 19. Bxc5 Qxc5 20. Qb3 Rd2 21. Rac1 Qf2 22. Rg1 Re8 23. Qa4 b5 24. Qf4 Rd6 25. a4 Qe3 26. Qxe3 Rxe3 27. axb5 cxb5 28. Ra1 a6 29. Rgb1 h6 30. c4 bxc4 31. h3 Re2 32. Rb7 Rdd2 33. Rg1 Rxc2 34. Rxc7 a5 35. Rc8+ Kh7 36. Rc7 Kg6 37. Rc6+ f6 38. Rc5 a4 39. Ra5 Ra2 40. h4 h5 41. Kh2 c3 42. Rc5 c2 43. Rc1 a3 44. Rc3 Rd2 45. Kg3 Rb2 46. Rxa3 Rb1 47. Ra1 Rxa1 0-1

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "17.7"]
[White "Acosta, Alejandro"]
[Black "Arenas Vanegas, David"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2346"]
[BlackElo "2443"]
[PlyCount "68"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. e5 Nc6 6. Qf4 Ng8 7. Bc4 f6 8. Nf3 Bg7 9. exf6 Nxf6 10. 0-0 e6 11. Qh4 0-0 12. Bg5 d5 13. Bb3 a6 14. Rad1 Qc7 15. Rfe1 Bd7 16. Bf4 Qa5 17. Bd6 Rfe8 18. Ne5 Nxe5 19. Bxe5 Rf8 20. Re3 Rf7 21. Ne2 Ne4 22. Bxg7 Kxg7 23. f3 Qc5 24. Nd4 e5 25. fxe4 exd4 26. Red3 dxe4 27. Rxd4 Rf6 28. c3 Bc6 29. h3 Rd8 30. Qe1 Rxd4 31. cxd4 Qf5 32. d5 Bb5 33. Qe3 Qe5 34. Qd4 Rf1+ 0-1

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "4.10"]
[White "Acosta, Alejandro"]
[Black "Castaneda, Jorge Luis"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "2346"]
[BlackElo "2182"]
[PlyCount "68"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Qa4+ Nbd7 6. Nc3 g6 7. Nf3 Bg7 8. Qb3 0-0 9. Bc4 b6 10. d4 Bb7 11. 0-0 Rc8 12. Re1 Re8 13. Ne5 Nxe5 14. dxe5 Ng4 15. Bf4 Qc7 16. Bb5 Red8 17. d6 exd6 18. exd6 Qc5 19. Bg3 Bd4 20. Re2 a6 21. d7 Ra8 22. Bc4 Rxd7 23. h3 Nf6 24. a4 Nh5 25. Bh2 Rc8 26. Bd3 Bxc3 27. bxc3 Rxd3 28. Rae1 Qg5 29. f3 Bxf3 30. Rf2 Bd5 31. Qxb6 Rdxc3 32. Be5 Rc1 33. Bb2 Rxe1+ 34. Kh2 Qg3# 0-1

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "1.11"]
[White "Acosta, Alejandro"]
[Black "Corredor Sanchez, Fabian Ricardo"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "2346"]
[BlackElo "2063"]
[PlyCount "79"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 Qa5 7. Qd2 Qb4 8. 0-0-0 Nxd4 9. Bxd4 Bxd4 10. Qxd4 Qxd4 11. Rxd4 Nh6 12. Nd5 Kf8 13. Be2 d6 14. Rhd1 Ng4 15. f3 Ne5 16. h3 Be6 17. Kb1 Rc8 18. f4 Nc6 19. R4d2 Bxd5 20. exd5 Nd8 21. Bf3 Rc7 22. b3 b6 23. Re2 f6 24. Rde1 Kf7 25. c4 Re8 26. Bg4 f5 27. Bf3 Nb7 28. g4 Nc5 29. gxf5 gxf5 30. Bh5+ Kf8 31. Bxe8 Kxe8 32. Re3 Kf7 33. Rg1 Ne4 34. Kb2 e5 35. dxe6+ Kxe6 36. Rg8 d5 37. cxd5+ Kxd5 38. Re8 Kd4 39. Re1 Kd3 40. Rd8+ 1-0

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "16.1"]
[White "Acosta, Alejandro"]
[Black "Escobar Forero, Alder"]
[Result "0-1"]
[ECO "B28"]
[WhiteElo "2346"]
[BlackElo "2464"]
[PlyCount "172"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. Nge2 b5 4. d4 cxd4 5. Nxd4 Bb7 6. Bd3 e5 7. Nf5 g6 8. Ne3 Nf6 9. 0-0 Bc5 10. a4 b4 11. Ncd5 Bxd5 12. exd5 d6 13. c4 0-0 14. a5 Nbd7 15. Bd2 Nh5 16. g3 Rb8 17. b3 Bd4 18. Ra2 Nc5 19. Be2 Ng7 20. Nc2 Nxb3 21. Bxb4 Bc5 22. Bxc5 Nxc5 23. Qd2 Nf5 24. Bg4 Ne7 25. Bf3 Rb3 26. Bg2 Nf5 27. Bh3 Rd3 28. Qe2 Nd4 29. Nxd4 Rxd4 30. Rb1 Qg5 31. Rb6 Rd8 32. Bf1 Qc1 33. Kg2 Qc3 34. Qb2 Qe1 35. Ra1 Qe4+ 36. Kg1 Kg7 37. Rb8 Rd7 38. Ra8 Rb7 39. Qc1 Qf5 40. Rd8 Rd7 41. Rb8 Ne4 42. Qe3 Nc5 43. Rb6 Re4 44. Qd2 Rd4 45. Qe3 Re4 46. Qc1 Rd4 47. Rab1 h5 48. h4 Ne4 49. Qe3 Nf6 50. Qg5 Qxg5 51. hxg5 Ne4 52. Rxa6 Rd2 53. Rab6 Ra2 54. a6 Nc5 55. Rc6 Rxa6 56. Rbb6 Rxb6 57. Rxb6 f6 58. gxf6+ Kxf6 59. Kg2 Ke7 60. Rb8 Rb7 61. Rg8 Kf6 62. Rd8 Rd7 63. Rf8+ Kg7 64. Rc8 Kf6 65. Rf8+ Ke7 66. Rg8 Kf7 67. Rc8 Ra7 68. Rc6 Ke7 69. Rc8 Ra2 70. Rg8 Kf7 71. Rd8 Ke7 72. Rg8 Ne4 73. Rxg6 Rxf2+ 74. Kg1 Rc2 75. Bd3 Rc1+ 76. Kg2 Nc5 77. Bf5 Rxc4 78. Rg7+ Kf6 79. Rh7 Kxf5 80. Rxh5+ Kg6 81. Rh8 Rc2+ 82. Kh3 Ne4 83. Rg8+ Kf7 84. Rd8 Rc3 85. Kh4 Rxg3 86. Rd7+ Kf6 0-1

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "13.3"]
[White "Acosta, Alejandro"]
[Black "Mendoza, Rafael Enrique"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2346"]
[BlackElo "2363"]
[PlyCount "52"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 e5 4. Nd5 d6 5. Nec3 g6 6. Bc4 Nf6 7. d3 Bg7 8. Bg5 Nd4 9. 0-0 h6 10. Bh4 g5 11. Bg3 Be6 12. Nxf6+ Bxf6 13. Nd5 Bg7 14. c3 Nc6 15. Ne3 Qd7 16. Qh5 Ne7 17. a4 a6 18. b4 cxb4 19. cxb4 0-0 20. h4 f6 21. Qg4 d5 22. Nxd5 Nxd5 23. Qxe6+ Qxe6 24. Bxd5 Qxd5 25. exd5 Rad8 26. hxg5 hxg5 1/2-1/2

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "5.8"]
[White "Acosta, Alejandro"]
[Black "Panesso Rivera, Henry"]
[Result "1/2-1/2"]
[ECO "C70"]
[WhiteElo "2346"]
[BlackElo "2349"]
[PlyCount "68"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. c3 g6 6. d4 exd4 7. cxd4 b5 8. Bb3 Bg7 9. 0-0 0-0 10. h3 Na5 11. Bc2 d6 12. Re1 c5 13. b3 cxd4 14. Nxd4 Nec6 15. Bb2 Qb6 16. Nxc6 Bxb2 17. Ne7+ Kh8 18. Nd2 Be6 19. Rb1 Bd4 20. Qf3 Qc7 21. Qd3 Qa7 22. Re2 Rfe8 23. Nd5 Nc6 24. Nf3 Bg7 25. Rd1 Bxd5 26. Qxd5 Nb4 27. Qxd6 Nxa2 28. Red2 Nc3 29. Re1 a5 30. e5 b4 31. h4 Nb5 32. Qd5 Nc3 33. Qd6 Nb5 34. Qd5 Nc3 1/2-1/2

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "11.4"]
[White "Acosta, Alejandro"]
[Black "Ruiz Castillo, Joshua Daniel"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2346"]
[BlackElo "2293"]
[PlyCount "59"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. a3 d6 7. Bd3 Nf6 8. 0-0 Be7 9. Kh1 0-0 10. f4 Bb7 11. Qf3 Nbd7 12. Bd2 Nc5 13. Rae1 d5 14. e5 Nfe4 15. Bxe4 Nxe4 16. Nxe4 dxe4 17. Qe3 Qd5 18. Bb4 Bxb4 19. axb4 Rfd8 20. c3 Qc4 21. f5 exf5 22. Rxf5 Qd3 23. Qf4 e3 24. Rxf7 Qd2 25. Re2 Rxd4 26. Qf1 Qd1 27. Rxe3 Qxf1+ 28. Rxf1 Rd2 29. Rg3 Re8 30. Re1 1-0

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "8.6"]
[White "Acosta, Alejandro"]
[Black "Zapata, Alonso"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2346"]
[BlackElo "2470"]
[PlyCount "58"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Bd3 Nf6 8. 0-0 b5 9. Nxc6 dxc6 10. f4 Bb7 11. e5 Nd5 12. Nxd5 cxd5 13. c3 Bc5 14. Bd4 Qb6 15. Kh1 g6 16. Be2 h5 17. Rc1 Rc8 18. Qd2 a5 19. b4 axb4 20. Bxc5 Rxc5 21. cxb4 Rxc1 22. Rxc1 0-0 23. Rc5 Rc8 24. Qc3 Rxc5 25. bxc5 Qa6 26. a3 b4 27. Bxa6 bxc3 28. Bd3 Ba6 29. Bc2 Kf8 1-0

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "18.7"]
[White "Arenas Vanegas, David"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "2443"]
[BlackElo "2346"]
[PlyCount "69"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3 Nc6 5. Bg2 g6 6. d4 cxd4 7. Nxd4 Nxd4 8. Qxd4 Bg7 9. 0-0 0-0 10. Qd3 Be6 11. b3 Qa5 12. Bb2 Rac8 13. Ne2 Rfd8 14. c4 a6 15. Nd4 Bd7 16. a3 Qh5 17. Qe2 Bg4 18. f3 Bd7 19. Rac1 b5 20. cxb5 axb5 21. f4 Bg4 22. Qxb5 Qxb5 23. Nxb5 Be2 24. Na7 Ra8 25. Rf2 Bd3 26. Nc6 Re8 27. e5 Ne4 28. Rf3 Bb5 29. Re3 Nc5 30. Nxe7+ Rxe7 31. Bxa8 Nd3 32. Rxd3 Bxd3 33. exd6 Ra7 34. Rc8+ Bf8 35. Bf6 1-0

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "3.10"]
[White "Castaneda, Jorge Luis"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "D27"]
[WhiteElo "2182"]
[BlackElo "2346"]
[PlyCount "48"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. Nc3 dxc4 5. e3 a6 6. Bxc4 b5 7. Bd3 Bb7 8. 0-0 c5 9. dxc5 Bxc5 10. Qe2 Nc6 11. e4 Qc7 12. h3 Nh5 13. Be3 Nf4 14. Bxf4 Qxf4 15. Rac1 Ba7 16. e5 Nd4 17. Nxd4 Bxd4 18. Rfe1 Rc8 19. Be4 Bxe4 20. Qxe4 Bxf2+ 21. Kh1 Qg3 22. Rf1 0-0 23. Rc2 Ba7 24. Rf3 Qg6 0-1

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "2.11"]
[White "Corredor Sanchez, Fabian Ricardo"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2063"]
[BlackElo "2346"]
[PlyCount "36"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Nf6 6. Nc3 Bg7 7. f3 0-0 8. Qd2 d5 9. exd5 Nxd5 10. Nxc6 bxc6 11. Bd4 e5 12. Bc5 Re8 13. 0-0-0 Be6 14. Bc4 Qa5 15. Nxd5 Qxc5 16. Nc7 Qxc4 17. Nxa8 Qxa2 18. Qd6 Bh6+ 0-1

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "15.1"]
[White "Escobar Forero, Alder"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2464"]
[BlackElo "2346"]
[PlyCount "75"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Nc3 e6 5. f4 Be7 6. Nf3 0-0 7. Bd3 Nc6 8. 0-0 d5 9. e5 Nd7 10. Qe1 c4 11. Be2 cxb3 12. axb3 Nb4 13. Rc1 Nc5 14. d4 Ne4 15. Nxe4 dxe4 16. Nd2 e3 17. Nc4 Nd5 18. Bd3 b5 19. Nxe3 Bb7 20. c4 bxc4 21. bxc4 Nb4 22. Bb1 Qb6 23. Rf2 a5 24. f5 Bg5 25. Bc3 Rad8 26. Rd1 Nc6 27. c5 Qc7 28. fxe6 fxe6 29. Ng4 Rxf2 30. Qxf2 Ne7 31. h4 Rf8 32. Bxh7+ Kxh7 33. Qxf8 Ng6 34. Qd6 Qf7 35. hxg5 Qf4 36. Qxe6 Qg3 37. c6 Qxc3 38. cxb7 1-0

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "14.3"]
[White "Mendoza, Rafael Enrique"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "2363"]
[BlackElo "2346"]
[PlyCount "105"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. g3 Nc6 5. Bg2 g6 6. d3 Bg7 7. 0-0 0-0 8. h3 Rb8 9. a4 a6 10. Bg5 h6 11. Be3 e5 12. Nd2 Nd4 13. a5 Be6 14. Nd5 Kh7 15. Nc4 Ne8 16. c3 Nc6 17. f4 f5 18. fxe5 Nxe5 19. Nxe5 Bxe5 20. Nf4 Bd7 21. d4 cxd4 22. cxd4 Bg7 23. exf5 Bxf5 24. Qd2 Nf6 25. d5 Ne4 26. Bxe4 Bxe4 27. Ne6 Rxf1+ 28. Rxf1 Qe7 29. Rc1 Qf6 30. Nxg7 Qf3 31. Kh2 Kxg7 32. Bd4+ Kg8 33. Qf2 Qxf2+ 34. Bxf2 Bxd5 35. Rc7 Re8 36. Rc2 Bc6 37. g4 Re4 38. Rd2 d5 39. Kg3 Kf7 40. Bd4 Ke6 41. Rd3 Re2 42. Re3+ Rxe3+ 43. Bxe3 h5 44. Kf4 hxg4 45. hxg4 Bd7 46. Bd4 Kd6 47. b4 Kc6 48. g5 Kb5 49. Bc5 Kc4 50. Ke3 Bf5 51. Kd2 d4 52. Bf8 d3 53. Be7 1/2-1/2

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "6.8"]
[White "Panesso Rivera, Henry"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2349"]
[BlackElo "2346"]
[PlyCount "68"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. g3 dxc4 5. Bg2 b5 6. 0-0 Bb7 7. Ne5 Nf6 8. a4 a6 9. Nc3 Nd5 10. e4 Nxc3 11. bxc3 Nd7 12. f4 Be7 13. axb5 cxb5 14. d5 exd5 15. exd5 Nf6 16. Nc6 Bxc6 17. dxc6 Qb6+ 18. Kh1 0-0 19. Qf3 Bc5 20. f5 Rfe8 21. Bf4 Ne4 22. h3 Nf2+ 23. Kh2 Nd3 24. f6 g6 25. Bh6 Rac8 26. Bf4 Re6 27. Qg4 a5 28. Bd5 Rcxc6 29. Bxe6 Rxe6 30. Ra2 a4 31. Re2 h5 32. Qf3 Rxf6 33. Re8+ Kh7 34. Qa8 Rxf4 0-1

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "12.4"]
[White "Ruiz Castillo, Joshua Daniel"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "C16"]
[WhiteElo "2293"]
[BlackElo "2346"]
[PlyCount "57"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. Qg4 Bf8 6. Bb5+ c6 7. Ba4 a5 8. a3 Ne7 9. Nce2 Bd7 10. c3 c5 11. Bc2 Bb5 12. Nf4 h5 13. Nxh5 cxd4 14. cxd4 Nbc6 15. Be3 Qd7 16. Ne2 0-0-0 17. 0-0 Nf5 18. Rfc1 Kb8 19. Nc3 Ncxd4 20. Bxd4 Nxd4 21. Qxd4 Rxh5 22. Nxb5 Qxb5 23. Ba4 Qe2 24. Rc2 Qxe5 25. Qxe5+ Rxe5 26. Rac1 Bd6 27. g3 Re4 28. Bc6 Rc8 29. Kg2 1/2-1/2

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "7.6"]
[White "Zapata, Alonso"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B87"]
[WhiteElo "2470"]
[BlackElo "2346"]
[PlyCount "61"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. 0-0 b5 8. Bb3 Be7 9. Qf3 Qc7 10. Qg3 Nc6 11. Nxc6 Qxc6 12. Re1 Bb7 13. a3 Rd8 14. f3 0-0 15. Be3 Nd7 16. Rad1 Ne5 17. Bd4 g6 18. f4 Nc4 19. Bxc4 Qxc4 20. f5 Rfe8 21. Rf1 a5 22. Qf2 exf5 23. exf5 b4 24. b3 Qxd4 25. Qxd4 bxc3 26. Rde1 Bg5 27. fxg6 hxg6 28. Qc4 Rxe1 29. Qxf7+ Kh8 30. Rxe1 d5 31. Qxb7 1-0

[Event "Pamplona IRT blitz op"]
[Site "Pamplona"]
[Date "2012.11.04"]
[Round "9.7"]
[White "Zuluaga Mancilla, Cesar"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2396"]
[BlackElo "2346"]
[PlyCount "94"]
[EventDate "2012.11.04"]
[EventType "swiss (blitz)"]
[EventRounds "18"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c5 3. e3 cxd4 4. exd4 Nc6 5. c3 Bg4 6. Be2 Nf6 7. Qb3 Na5 8. Qa4+ Bd7 9. Qd1 a6 10. Ne5 e6 11. 0-0 Be7 12. Nd2 0-0 13. Bd3 Qb6 14. a4 Rfd8 15. f4 g6 16. Kh1 Be8 17. b4 Nc6 18. a5 Qc7 19. Nb3 Ne4 20. Bxe4 dxe4 21. Bd2 f6 22. Ng4 f5 23. Ne3 Na7 24. Nc5 Bxc5 25. bxc5 Bb5 26. Rf2 Bd3 27. Qb3 Qc6 28. Bc1 Nb5 29. Bb2 Nc7 30. c4 Ne8 31. Kg1 Ng7 32. Bc3 Rd7 33. Qb6 Rc8 34. g3 Nh5 35. Qxc6 Rxc6 36. Rb2 Kf7 37. Kf2 Nf6 38. h3 h6 39. g4 Rc8 40. Rg1 Rg8 41. Rb6 Rgd8 42. d5 Re7 43. gxf5 gxf5 44. dxe6+ Rxe6 45. Nxf5 e3+ 46. Nxe3 Ne4+ 47. Kf3 Rxb6 0-1

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.30"]
[Round "10"]
[White "Valle, Efrain"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "A17"]
[WhiteElo "2193"]
[BlackElo "2333"]
[PlyCount "22"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 b6 3. Bg2 Bb7 4. 0-0 Nf6 5. c4 e6 6. Nc3 Be7 7. d3 0-0 8. e4 d6 9. Be3 Nbd7 10. Nd2 Ne5 11. Qe2 Neg4 1/2-1/2

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.29"]
[Round "9"]
[White "Acosta, Alejandro"]
[Black "Murcia Pineda, Richard Javier"]
[Result "1-0"]
[ECO "B77"]
[WhiteElo "2333"]
[BlackElo "2116"]
[PlyCount "107"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 g6 4. d4 cxd4 5. Nxd4 Bg7 6. Be3 d6 7. Qd2 Nf6 8. f3 0-0 9. Bc4 Nxd4 10. Bxd4 Be6 11. Bb3 Qa5 12. 0-0-0 Bxb3 13. cxb3 Rfc8 14. Kb1 b5 15. Bxf6 Bxf6 16. Nd5 Qxd2 17. Nxf6+ Kg7 18. Nh5+ gxh5 19. Rxd2 Kg6 20. h4 a6 21. Rd5 f6 22. Rhd1 Rc6 23. a4 Rb8 24. R1d2 Rcb6 25. Ka2 bxa4 26. bxa4 Rb4 27. R5d4 R4b6 28. R4d3 Kf7 29. Rc2 Ke8 30. b3 Kd7 31. Ka3 Rb4 32. Rdc3 R8b7 33. Rc7+ Ke6 34. Rxb7 Rxb7 35. Rc6 Ra7 36. Kb4 Kd7 37. Rc3 a5+ 38. Kb5 Ra8 39. Kb6 h6 40. Rd3 e6 41. f4 Ke7 42. Rc3 d5 43. Rc7+ Kd6 44. Rc6+ Kd7 45. exd5 exd5 46. Kc5 Ke7 47. Kxd5 Rb8 48. Rc7+ Kf8 49. Ke6 Rb6+ 50. Kf5 Rb4 51. Ra7 Rxb3 52. Rxa5 Rb6 53. Ra8+ Kf7 54. Ra7+ 1-0

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.29"]
[Round "8"]
[White "Sequeda Ramirez, Pablo"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "E66"]
[WhiteElo "2126"]
[BlackElo "2333"]
[PlyCount "133"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. d4 Nc6 7. 0-0 a6 8. d5 Na5 9. Qd3 c5 10. Nd2 Rb8 11. h3 Nd7 12. b3 b5 13. Rb1 Ne5 14. Qc2 bxc4 15. bxc4 Rxb1 16. Ncxb1 Qb6 17. Ba3 Qc7 18. Kh2 e6 19. f4 Nd7 20. Nc3 Nb6 21. Qd3 exd5 22. Nxd5 Nxd5 23. Bxd5 Nc6 24. Bg2 Nd4 25. Bb2 Re8 26. e4 Bb7 27. Bc3 f5 28. Bxd4 cxd4 29. Re1 Qa5 30. c5 Qc3 31. Qxc3 dxc3 32. Nc4 dxc5 33. e5 Bxg2 34. Kxg2 Rd8 35. Re3 Rd4 36. Rxc3 Kf7 37. Kf3 Bf8 38. Nb6 Rd2 39. Ra3 Rc2 40. Rxa6 Rc3+ 41. Ke2 Rxg3 42. Ra7+ Ke6 43. Rxh7 g5 44. fxg5 Rxg5 45. Kf3 Bg7 46. Nc4 Bxe5 47. Nxe5 Kxe5 48. Rc7 Kd4 49. a4 Rg1 50. Rd7+ Ke5 51. Rc7 Kd6 52. Rc8 Ra1 53. Kf4 Rxa4+ 54. Kxf5 Rh4 55. Rd8+ Kc6 56. Rd3 c4 57. Re3 Kd5 58. Kg5 Rh8 59. h4 Kd4 60. Re7 Rc8 61. h5 c3 62. Re1 c2 63. Rc1 Ke5 64. Re1+ Kd4 65. Rc1 Rg8+ 66. Kf6 Rg2 67. h6 1/2-1/2

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.28"]
[Round "7"]
[White "Acosta, Alejandro"]
[Black "Leitao, Rafael Duailibe"]
[Result "0-1"]
[ECO "B48"]
[WhiteElo "2333"]
[BlackElo "2623"]
[PlyCount "70"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be3 a6 7. Bd3 Nf6 8. 0-0 b5 9. Nxc6 Qxc6 10. a3 Bb7 11. Qe2 h5 12. f3 Bd6 13. Bd4 e5 14. Be3 Bc5 15. Rfd1 d6 16. Bxc5 Qxc5+ 17. Qf2 Qxf2+ 18. Kxf2 Ke7 19. a4 b4 20. Na2 a5 21. c3 Bc6 22. b3 bxc3 23. Nxc3 Rac8 24. Bc4 Bd7 25. Rd3 Be6 26. Bxe6 fxe6 27. Rad1 Rc6 28. R1d2 g5 29. Nd1 Nd7 30. Nb2 Nc5 31. Re3 Rb8 32. Nc4 Rb4 33. Rc2 Nxb3 34. Na3 Nc5 35. Nb5 Nxa4 0-1

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.28"]
[Round "6"]
[White "Yanez Rodriguez, William"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "1968"]
[BlackElo "2333"]
[PlyCount "134"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. g3 d5 3. Bg2 c6 4. Nf3 Bf5 5. 0-0 e6 6. c4 Be7 7. Nc3 h6 8. Qb3 Qb6 9. c5 Qxb3 10. axb3 a6 11. b4 0-0 12. b5 cxb5 13. Nxb5 Nc6 14. Nc3 Ne4 15. Na4 Bf6 16. Nb6 Nxd4 17. Nxd4 Bxd4 18. Nxa8 Rxa8 19. Be3 Bxe3 20. fxe3 Nf6 21. b4 Rc8 22. Rfe1 Ng4 23. Ra3 Ne5 24. b5 axb5 25. Rb3 Bg6 26. Rxb5 Rc7 27. h3 f6 28. Kf1 Be8 29. Rb6 Bc6 30. Rb4 f5 31. Kf2 Rc8 32. Ra1 Kf7 33. Ra7 Kf6 34. Rb1 Nd7 35. Ra5 h5 36. Bf3 g6 37. Rb4 e5 38. Rb1 e4 39. Bg2 Ke5 40. Re1 g5 41. h4 Nf6 42. Bh3 gxh4 43. gxh4 Rd8 44. Rd1 Rf8 45. Raa1 f4 46. exf4+ Kxf4 47. e3+ Ke5 48. Kg3 Rg8+ 49. Kf2 Rf8 50. Kg3 Nd7 51. Bxd7 Rf3+ 52. Kg2 Bxd7 53. Re1 Rf8 54. Rg1 Rc8 55. Rac1 Bg4 56. Rgf1 Bf3+ 57. Kf2 d4 58. exd4+ Kxd4 59. Rg1 Bg4 60. Rge1 e3+ 61. Kg1 Rg8 62. Kh2 e2 63. Rg1 Rf8 64. c6 bxc6 65. Rxc6 Rf1 66. Rc1 Rxc1 67. Rxc1 Ke3 0-1

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.27"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Sears, Frank"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2333"]
[BlackElo "1908"]
[PlyCount "59"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Be7 8. c4 Nb4 9. Be2 0-0 10. Nc3 Bf5 11. a3 Nxc3 12. bxc3 Nc6 13. Re1 Re8 14. cxd5 Qxd5 15. Bf4 Rac8 16. Bd3 Bxd3 17. Qxd3 Qd7 18. Re3 Bf6 19. Rae1 g6 20. Qb5 Rxe3 21. fxe3 b6 22. a4 Nb8 23. Qb3 Nc6 24. e4 Rd8 25. e5 Na5 26. Qa2 Be7 27. e6 Qd5 28. exf7+ Qxf7 29. Re6 Qxf4 30. Rf6+ 1-0

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.27"]
[Round "4"]
[White "Gonzalez Vidal, Yuri"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "B51"]
[WhiteElo "2563"]
[BlackElo "2333"]
[PlyCount "65"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 a6 6. Ba4 c4 7. Re1 Nf6 8. Bc2 e5 9. b3 b5 10. bxc4 bxc4 11. Qe2 Na5 12. Na3 Qc8 13. Rb1 h6 14. Nh4 g6 15. Rb4 Be6 16. Ba4+ Nd7 17. Qf3 Nc6 18. Rxc4 Nc5 19. Rxc5 dxc5 20. Qf6 Rg8 21. Qxe5 Qd7 22. Qg3 c4 23. Nf5 gxf5 24. Qxg8 0-0-0 25. exf5 Bd5 26. Qg4 h5 27. Qxh5 Bc5 28. Nc2 Rg8 29. g3 Qd8 30. f6 Qd6 31. Ne3 Be4 32. Qxf7 Rf8 33. Qxc4 1-0

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.26"]
[Round "3"]
[White "Acosta, Alejandro"]
[Black "Corado Paz Castillo, Rafael"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2333"]
[BlackElo "2143"]
[PlyCount "51"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. Nge2 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Bd3 Nf6 7. 0-0 Nc6 8. Be3 Be7 9. f4 Nxd4 10. Bxd4 Bc5 11. Bxc5 Qxc5+ 12. Kh1 d6 13. Qf3 0-0 14. Rae1 Qh5 15. Qxh5 Nxh5 16. e5 dxe5 17. fxe5 g6 18. g4 Ng7 19. Ne4 Ne8 20. Rd1 Bd7 21. Nc5 Bc6+ 22. Be4 Rc8 23. Bxc6 Rxc6 24. Nd7 Rxc2 25. Nxf8 Kxf8 26. Rd4 1-0

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.26"]
[Round "2"]
[White "Osorio Itanare, Fernando Augus"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "C86"]
[WhiteElo "2175"]
[BlackElo "2333"]
[PlyCount "84"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Be7 7. c3 0-0 8. 0-0 Bb7 9. Rd1 d5 10. d3 Re8 11. Nbd2 Bf8 12. Nf1 h6 13. Ne3 Na5 14. Bc2 c5 15. Nd2 d4 16. Nf5 g6 17. Ng3 Qc7 18. h4 h5 19. Nb3 Nc6 20. Bg5 Nh7 21. Bd2 Qe7 22. Rac1 Qxh4 23. cxd4 Nxd4 24. Nxd4 exd4 25. Bb3 Bd6 26. Qf3 Re7 27. Nf1 Rae8 28. g3 Qh3 29. Qg2 Qxg2+ 30. Kxg2 Kg7 31. Bf4 Bxf4 32. gxf4 c4 33. dxc4 Rxe4 34. Ng3 Rxf4+ 35. Kf1 Bf3 36. Re1 Rxe1+ 37. Kxe1 h4 38. Nf1 Nf6 39. Nd2 Bc6 40. cxb5 Bxb5 41. Rc7 Ng4 42. a4 Bd3 0-1

[Event "San Cristobal Bolivar op 1st"]
[Site "San Cristobal"]
[Date "2012.09.25"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Brizuela Abreu, Ronald Jesus"]
[Result "1/2-1/2"]
[ECO "C05"]
[WhiteElo "2333"]
[BlackElo "2152"]
[PlyCount "54"]
[EventDate "2012.09.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "VEN"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. f4 Nc6 7. Ndf3 Be7 8. Bd3 a5 9. Ne2 a4 10. 0-0 0-0 11. Kh1 f5 12. h3 cxd4 13. cxd4 a3 14. b3 Nb4 15. Bb1 Nb8 16. g4 g6 17. gxf5 gxf5 18. Rg1+ Kh8 19. Qe1 Qe8 20. Kh2 Bd7 21. Be3 N8c6 22. Ng3 Rg8 23. Qe2 Qf7 24. Rg2 h6 25. Bd3 Nxd3 26. Qxd3 Nb4 27. Qe2 Rac8 1/2-1/2

[Event "Bogota Semana Santa op"]
[Site "Bogota"]
[Date "2012.04.08"]
[Round "9"]
[White "Acosta, Alejandro"]
[Black "Gomez Garrido, Camilo Ernesto"]
[Result "1/2-1/2"]
[ECO "B87"]
[WhiteElo "2309"]
[BlackElo "2515"]
[PlyCount "46"]
[EventDate "2012.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. 0-0 b5 8. Bb3 Be7 9. Qf3 Qb6 10. Be3 Qb7 11. Qg3 b4 12. Na4 Nbd7 13. f3 0-0 14. Rac1 Nc5 15. Nxc5 dxc5 16. Ne2 Rd8 17. Qf2 Qb5 18. c4 Qc6 19. e5 Nd7 20. Bc2 Bb7 21. f4 f5 22. exf6 Nxf6 23. Qg3 Ne4 1/2-1/2

[Event "Bogota Semana Santa op"]
[Site "Bogota"]
[Date "2012.04.08"]
[Round "8"]
[White "Ardila, Donaldo"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "D35"]
[BlackElo "2309"]
[PlyCount "92"]
[EventDate "2012.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 c6 5. Nf3 Nf6 6. Bg5 Be7 7. e3 Bf5 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. 0-0 0-0 11. Rfe1 Re8 12. Rac1 Qb6 13. Re2 Bd6 14. Bxf6 Nxf6 15. Ng5 h6 16. Nh3 Rad8 17. Qf5 Qa6 18. Rce1 Bb4 19. f3 Re7 20. Nf4 Ne8 21. Qd3 Qa5 22. g4 Nd6 23. a3 Bxc3 24. Qxc3 Qxc3 25. bxc3 Nb5 26. Ra1 Nxc3 27. Ree1 Na4 28. Rac1 Nb2 29. Rc3 Nc4 30. Kf2 b5 31. Re2 Rde8 32. h4 a5 33. Rb3 a4 34. Rc3 g6 35. h5 g5 36. Ng2 b4 37. axb4 Rb8 38. Ne1 Rxb4 39. Nd3 Rb3 40. Rxb3 axb3 41. e4 Rb7 42. Nb2 Ra7 43. Nd1 Ra1 44. Nc3 b2 45. e5 Rc1 46. e6 fxe6 0-1

[Event "Bogota Semana Santa op"]
[Site "Bogota"]
[Date "2012.04.06"]
[Round "6"]
[White "Acosta, Alejandro"]
[Black "Barrientos Chavarriaga, Sergio E"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2309"]
[BlackElo "2519"]
[PlyCount "119"]
[EventDate "2012.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. Nf3 b5 4. d4 cxd4 5. Nxd4 e6 6. Bd3 d6 7. 0-0 Nf6 8. Re1 Be7 9. a4 b4 10. Na2 e5 11. Nb3 Nc6 12. Bd2 Rb8 13. Qe2 Qb6 14. a5 Qb7 15. Bc4 0-0 16. Bd5 Qd7 17. Bxc6 Qxc6 18. Nxb4 Qb7 19. Bc3 Ra8 20. Nd2 Be6 21. Nc4 Nxe4 22. Qxe4 Qxe4 23. Rxe4 f5 24. Nb6 fxe4 25. Nxa8 Rxa8 26. Rd1 Kf7 27. Re1 Bd8 28. Nc6 Bf5 29. g4 Bg6 30. Rd1 Be7 31. Bb4 Bf8 32. Bxd6 Rc8 33. Nxe5+ Ke6 34. Bxf8 Kxe5 35. Bd6+ Ke6 36. Bf4 Rxc2 37. Rd6+ Ke7 38. Rxa6 e3 39. Bxe3 Rxb2 40. Ra7+ Ke6 41. Rxg7 Ra2 42. Ra7 Be4 43. h3 Ke5 44. Kh2 Ra1 45. Kg3 Bd3 46. f4+ Kd6 47. f5 h5 48. f6 Rf1 49. g5 Be4 50. Bf4+ Kd5 51. Rd7+ Kc6 52. Rc7+ Kd5 53. Rc3 Ke6 54. Bc7 Kf5 55. Kh4 Kg6 56. Re3 Bg2 57. Re2 Rc1 58. Rxg2 Rc4+ 59. Kg3 Rxc7 60. Rf2 1-0

[Event "Bogota Semana Santa op"]
[Site "Bogota"]
[Date "2012.04.06"]
[Round "5"]
[White "Acosta, Alejandro"]
[Black "Castrillon Gomez, Melissa"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "2309"]
[BlackElo "2185"]
[PlyCount "71"]
[EventDate "2012.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. g3 Nc6 7. Nde2 Bg7 8. Bg2 0-0 9. 0-0 Rb8 10. a4 a6 11. h3 b5 12. axb5 axb5 13. Nd5 Nd7 14. Ra2 Nc5 15. Bd2 Bb7 16. Re1 e6 17. Ndf4 Ne7 18. Nc1 Ra8 19. Bb4 Rxa2 20. Nxa2 e5 21. Nd3 Qb6 22. Nc3 f5 23. exf5 Bxg2 24. Kxg2 Nxd3 25. Qxd3 Nxf5 26. Qd5+ Kh8 27. Ne4 h6 28. c3 Kh7 29. Ra1 Qxf2+ 30. Kxf2 Ne7+ 31. Ke2 Nxd5 32. Bxd6 Rc8 33. Ra5 Rc4 34. Kd3 Nc7 35. Ra7 Ne6 36. Nf6+ 1-0

[Event "Bogota Semana Santa op"]
[Site "Bogota"]
[Date "2012.04.05"]
[Round "3"]
[White "Acosta, Alejandro"]
[Black "Avila, Pedro Andres"]
[Result "1-0"]
[ECO "B86"]
[WhiteElo "2309"]
[BlackElo "2107"]
[PlyCount "63"]
[EventDate "2012.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. 0-0 Be7 8. Bb3 0-0 9. f4 Nbd7 10. f5 Nc5 11. fxe6 fxe6 12. Nf5 Kh8 13. Nxe7 Qxe7 14. Bg5 b5 15. Qd4 Bb7 16. e5 dxe5 17. Qxe5 Ncd7 18. Qxe6 Qc5+ 19. Be3 Qh5 20. Qf5 Qe8 21. Bd4 b4 22. Rae1 Qc8 23. Ne2 Qc6 24. Nf4 Rae8 25. Qh3 Ne4 26. c3 bxc3 27. bxc3 Ng5 28. Qg4 Rxe1 29. Rxe1 Rxf4 30. Qxg5 Qg6 31. Qxg6 hxg6 32. Re7 1-0

[Event "Bogota Semana Santa op"]
[Site "Bogota"]
[Date "2012.04.05"]
[Round "4"]
[White "Pozo Vera, Sandro"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2483"]
[BlackElo "2309"]
[PlyCount "65"]
[EventDate "2012.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Qc2 Nbd7 8. Bd3 0-0 9. Nf3 Re8 10. h3 Nf8 11. Bf4 Bd6 12. Bxd6 Qxd6 13. 0-0-0 Be6 14. Kb1 Rac8 15. Ka1 N6d7 16. g4 b5 17. Qb1 a6 18. Bf5 Nb6 19. Ne2 g6 20. Bxe6 Nxe6 21. h4 b4 22. h5 b3 23. hxg6 hxg6 24. Rh6 Nf8 25. Rdh1 bxa2 26. Qxa2 Qf6 27. Nf4 Nc4 28. b3 Nd6 29. Ne5 Ne4 30. f3 Ng3 31. Rh8+ Kg7 32. Qh2 Qg5 33. Rh7+ 1-0

[Event "Bogota Semana Santa op"]
[Site "Bogota"]
[Date "2012.04.04"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Rivera, Ingris"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2309"]
[BlackElo "2169"]
[PlyCount "62"]
[EventDate "2012.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. Nd5 g6 5. Nec3 Bg7 6. Bc4 Nc6 7. d3 Be6 8. 0-0 Qd7 9. a3 h6 10. Be3 Nge7 11. b4 b6 12. Bb5 Rc8 13. Nxe7 Qxe7 14. Nd5 Qd8 15. Qd2 f5 16. f4 0-0 17. c3 Kh7 18. Bc4 Qd7 19. Ba6 Rcd8 20. Bb5 Qb7 21. Rab1 Ne7 22. c4 exf4 23. Bxf4 g5 24. Nxe7 Qxe7 25. exf5 Bxf5 26. Rbe1 Qb7 27. Be3 a6 28. Ba4 d5 29. cxd5 Qxd5 30. bxc5 bxc5 31. Bc2 Bg6 1/2-1/2

[Event "Bogota Semana Santa op"]
[Site "Bogota"]
[Date "2012.04.04"]
[Round "2"]
[White "Valle, Efrain"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "D34"]
[WhiteElo "2190"]
[BlackElo "2309"]
[PlyCount "60"]
[EventDate "2012.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nf6 3. Bg2 d5 4. c4 e6 5. 0-0 Nc6 6. cxd5 exd5 7. d4 Be7 8. dxc5 Bxc5 9. Bg5 0-0 10. Nc3 d4 11. Bxf6 Qxf6 12. Ne4 Qe7 13. Nxc5 Qxc5 14. Qd2 Bg4 15. Rac1 Qb6 16. Rc4 Rad8 17. Rd1 Rfe8 18. b3 d3 19. Rxg4 dxe2 20. Rxg7+ Kh8 21. Rxh7+ Kxh7 22. Qc2+ Kg8 23. Re1 Nd4 24. Qc1 Qf6 25. Nd2 Rc8 26. Qa1 Rc2 27. Ne4 Qg7 28. h4 Kf8 29. a4 Rec8 30. Nd6 Nf3+ 0-1

[Event "Bogota op 03"]
[Site "Bogota"]
[Date "2012.03.18"]
[Round "6"]
[White "Acuna Buitrago, Camilo Andres"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B85"]
[WhiteElo "2045"]
[BlackElo "2309"]
[PlyCount "54"]
[EventDate "2012.03.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Be3 Nc6 7. Be2 Be7 8. 0-0 0-0 9. Kh1 a6 10. f4 Qc7 11. Qe1 Bd7 12. Qg3 b5 13. e5 Ne8 14. Nxc6 Bxc6 15. Bd3 dxe5 16. fxe5 f5 17. Rad1 Kh8 18. Ne2 g5 19. Qh3 Ng7 20. Qh6 Rad8 21. Nd4 Bd5 22. b3 Qxe5 23. Rde1 Qf6 24. Qh3 Bd6 25. c4 bxc4 26. bxc4 Ba8 27. Bg1 g4 0-1

[Event "Bogota op 03"]
[Site "Bogota"]
[Date "2012.03.18"]
[Round "7"]
[White "Perez Olarte, Cesar Camilo"]
[Black "Acosta, Alejandro"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2242"]
[BlackElo "2309"]
[PlyCount "33"]
[EventDate "2012.03.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. Qe2 Be7 5. 0-0 0-0 6. c3 d6 7. Rd1 Bd7 8. d4 exd4 9. cxd4 a6 10. Ba4 Re8 11. Nc3 h6 12. Bc2 Qc8 13. a3 b5 14. e5 dxe5 15. dxe5 Bd6 16. Bf4 Bg4 17. Ne4 1-0

[Event "Bogota op 03"]
[Site "Bogota"]
[Date "2012.03.17"]
[Round "3"]
[White "Acosta, Alejandro"]
[Black "Pinzon, Jairo David"]
[Result "1/2-1/2"]
[ECO "B57"]
[WhiteElo "2309"]
[BlackElo "2210"]
[PlyCount "104"]
[EventDate "2012.03.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bc4 Qb6 7. Nb3 e6 8. Bf4 Ne5 9. Be2 Be7 10. Be3 Qc7 11. Nb5 Qb8 12. f4 Nc6 13. Nc3 0-0 14. 0-0 a6 15. a4 b6 16. Bf3 Qc7 17. g4 h6 18. Kh1 Bd7 19. Qe2 Na5 20. Nd4 Nc4 21. Bc1 Rab8 22. Bg2 b5 23. axb5 axb5 24. b3 Qc5 25. Ncxb5 Bxb5 26. Nxb5 Rxb5 27. bxc4 Rb4 28. e5 Nh7 29. Ba3 Qxc4 30. Qxc4 Rxc4 31. exd6 Bf6 32. Rab1 Rxc2 33. Rfc1 Rxc1+ 34. Rxc1 Rd8 35. Bb7 Nf8 36. Rc8 g5 37. f5 Kg7 38. Kg2 h5 39. h3 hxg4 40. hxg4 exf5 41. gxf5 Nd7 42. Rc7 Ne5 43. Bd5 Rd7 44. Be6 Rd8 45. Kg3 Kg8 46. Bd5 Rd7 47. Bb3 Bd8 48. Rc8 Kg7 49. Bc5 Bf6 50. Rc7 Bd8 51. Rc8 Bf6 52. Bd5 Nd3 1/2-1/2

[Event "Bogota op 03"]
[Site "Bogota"]
[Date "2012.03.17"]
[Round "4"]
[White "Acosta, Alejandro"]
[Black "Ruiz Castillo, Joshua Daniel"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2309"]
[BlackElo "2178"]
[PlyCount "74"]
[EventDate "2012.03.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. Kh1 Be6 10. f4 exf4 11. Bxf4 Nc6 12. Qe1 Ne5 13. Rd1 Qc7 14. Nd4 Kh8 15. Qg3 b5 16. a3 Rad8 17. Bg5 Ng8 18. Bc1 Nf6 19. Nf5 Bxf5 20. Rxf5 Qc6 21. Bd3 Rfe8 22. h3 Nfd7 23. Be3 Nb6 24. Bd4 f6 25. Qf2 Nbd7 26. Nd5 Bf8 27. Qh4 Ng6 28. Qg3 Nde5 29. Rff1 Rc8 30. Bc3 Ne7 31. Ne3 Ng8 32. Nf5 g6 33. Ne3 Bg7 34. Nd5 Qb7 35. Qf2 Rb8 36. Be2 Rf8 37. Qd4 Nc6 1/2-1/2

[Event "Bogota op 03"]
[Site "Bogota"]
[Date "2012.03.17"]
[Round "5"]
[White "Santos Morales, Natalia Andrea"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2023"]
[BlackElo "2309"]
[PlyCount "126"]
[EventDate "2012.03.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Bd3 Nc6 8. Nxc6 dxc6 9. Qc2 e5 10. 0-0 Bc5 11. Na4 Bd4 12. c5 Be6 13. Bg5 h6 14. Bd2 Qe7 15. Rad1 0-0 16. Ba5 Nh5 17. Bc4 Nf4 18. Bxe6 Qxe6 19. Kh1 Qg4 20. f3 Qg6 21. Bc7 Nd5 22. Bd6 Ne3 23. Qe2 Nxf1 24. Qxf1 Rfe8 25. Nb6 Ra7 26. Qe2 a5 27. f4 Qf6 28. fxe5 Bxe5 29. Nd7 Qg5 30. Nxe5 Rxe5 31. Bxe5 Qxe5 32. Rd8+ Kh7 33. Qc2 a4 34. Rd7 Ra5 35. Rxf7 Rxc5 36. Qb1 Rc4 37. Rxb7 Qf4 38. e5+ Kg8 39. Rb8+ Kf7 40. e6+ Kxe6 41. Qg6+ Kd5 42. Rd8+ Kc5 43. Rd1 Rc1 44. Qd3 Rxd1+ 45. Qxd1 Qd4 46. Qc1+ Qc4 47. Qe3+ Kb5 48. Qe5+ Qd5 49. Qe2+ Qc4 50. Qe5+ Ka6 51. h3 g5 52. Kg1 Qxa2 53. Qf6 Kb5 54. Kf1 Qb1+ 55. Ke2 Qc2+ 56. Kf1 Qc1+ 57. Ke2 c5 58. Qg7 Qc4+ 59. Ke1 Qe4+ 60. Kf1 h5 61. Qd7+ Kb4 62. Qd2+ Kc4 63. Qc3+ Kb5 0-1

[Event "Bogota op 03"]
[Site "Bogota"]
[Date "2012.03.16"]
[Round "2"]
[White "Pereira Vera, Henry Alberto"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "2086"]
[BlackElo "2309"]
[PlyCount "102"]
[EventDate "2012.03.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 0-0 6. Be2 Bg4 7. 0-0 Nfd7 8. Be3 Nc6 9. Qd2 Bxf3 10. Bxf3 e5 11. Ne2 exd4 12. Nxd4 Nde5 13. Be2 Qh4 14. f3 Nxd4 15. Bxd4 Rae8 16. Rad1 b6 17. Rfe1 a5 18. Be3 Qe7 19. Qd5 Nd7 20. Bg5 Bf6 21. Bc1 Nc5 22. Bf1 Be5 23. g3 Qf6 24. Bh6 Qxf3 25. Bxf8 Kxf8 26. Bg2 Qg4 27. Rf1 Re7 28. Rd2 Kg7 29. Rdf2 f6 30. Qd1 Qg5 31. Qd2 Qg4 32. Bf3 Qd7 33. Kg2 h5 34. h4 Qc6 35. Re2 Kh7 36. Rd1 Rg7 37. Rh1 Ne6 38. Qd5 Qd7 39. Rd1 Nd4 40. Red2 Nxf3 41. Kxf3 Qg4+ 42. Kg2 Bxg3 43. Kh1 Re7 44. Rg2 Qxh4+ 45. Kg1 Bf4 46. Qd3 f5 47. Re2 fxe4 48. Qc2 Re5 49. Rd5 Qg3+ 50. Kh1 Qh3+ 51. Kg1 Be3+ 0-1

[Event "Bogota op 03"]
[Site "Bogota"]
[Date "2012.03.15"]
[Round "1"]
[White "Acosta, Alejandro"]
[Black "Bejarano, Danny Andres"]
[Result "1-0"]
[ECO "C09"]
[WhiteElo "2309"]
[BlackElo "1988"]
[PlyCount "97"]
[EventDate "2012.03.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. dxc5 Bxc5 8. Nb3 Bd6 9. 0-0 Nge7 10. Bg5 f6 11. Bh4 0-0 12. c3 Bg4 13. Be2 Qb6 14. Re1 Rad8 15. Nfd4 Bxe2 16. Rxe2 Ng6 17. Bg3 Bxg3 18. hxg3 Nce5 19. Qc2 Rfe8 20. Rae1 Ne7 21. Nf5 Nxf5 22. Qxf5 g6 23. Qc2 Re7 24. Nd4 Rde8 25. Qa4 Kf7 26. Kf1 Nc4 27. b3 Nd2+ 28. Kg1 Rxe2 29. Rxe2 Rxe2 30. Nxe2 Ke7 31. Nf4 Qc5 32. b4 Qc6 33. Qd1 g5 34. Qxd2 gxf4 35. gxf4 Qc4 36. Qe3+ Kd6 37. a3 b6 38. g4 Qb3 39. Qd4 Qb1+ 40. Kh2 Qg6 41. f3 h5 42. f5 Qg5 43. c4 hxg4 44. fxg4 Qh4+ 45. Kg2 Qg5 46. Qxd5+ Kc7 47. Qd4 Qg7 48. Kf3 Qh6 49. Qf4+ 1-0

[Event "Bogota Univ Central op-A 5th"]
[Site "Bogota"]
[Date "2011.10.14"]
[Round "2.1"]
[White "Acosta, Alejandro"]
[Black "Villamil, Nahum Jose"]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "2312"]
[BlackElo "1828"]
[PlyCount "41"]
[EventDate "2011.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. Nf3 d6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 Nbd7 7. f4 Qc7 8. Qf3 h6 9. Bxf6 Nxf6 10. Bd3 b5 11. e5 Bb7 12. Qe2 b4 13. Ncb5 axb5 14. exf6 0-0-0 15. fxg7 Bxg7 16. Qg4+ Qd7 17. Qxg7 Rdg8 18. Qxf7 Rf8 19. Qe6 Rxf4 20. Qxd7+ Kxd7 21. 0-0-0 1-0

[Event "Bogota Univ Central op-A 5th"]
[Site "Bogota"]
[Date "2011.10.14"]
[Round "3.1"]
[White "Rubio Junguito, Andres"]
[Black "Acosta, Alejandro"]
[Result "0-1"]
[ECO "B85"]
[WhiteElo "2042"]
[BlackElo "2312"]
[PlyCount "52"]
[EventDate "2011.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e6 7. Be2 Be7 8. Be3 Nc6 9. 0-0 0-0 10. f4 Qc7 11. Nb3 b6 12. Kh1 Re8 13. Bf3 Rb8 14. Qe2 Na5 15. Nxa5 bxa5 16. Rab1 Rb4 17. Bd2 Rc4 18. h3 e5 19. f5 d5 20. exd5 Bxf5 21. Bg5 Bg6 22. Rfd1 e4 23. Bg4 Nxg4 24. Qxg4 e3 25. Bxe7 Rxg4 26. hxg4 Qxe7 0-1

[Event "Bogota Univ Central op-A 5th"]
[Site "Bogota"]
[Date "2011.10.13"]
[Round "1.1"]
[White "Mayorquin Polanco, Nicolas"]
[Black "Acosta, Alejandro"]
[Result "1/2-1/2"]
[ECO "B70"]
[WhiteElo "1898"]
[BlackElo "2312"]
[PlyCount "72"]
[EventDate "2011.10.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nb3 Nf6 7. Be2 0-0 8. 0-0 d6 9. Re1 Be6 10. Bf1 d5 11. Nc5 Bg4 12. Be2 Bxe2 13. Qxe2 Qb6 14. exd5 Nd4 15. Qc4 Ng4 16. Nd3 Rac8 17. Qa4 Qa6 18. Qxa6 bxa6 19. Rxe7 Nxc2 20. Rb1 Na3 21. bxa3 Rxc3 22. Rb3 Rfc8 23. Bd2 Rc2 24. Be3 Rxa2 25. g3 Bf8 26. Re4 Nxe3 27. Rxe3 a5 28. Ne5 a4 29. Rb7 Rxa3 30. Rxa3 Bxa3 31. Rxa7 Rc1+ 32. Kg2 Bd6 33. Nd3 Rc3 34. Ra6 Bxg3 35. hxg3 Rxd3 36. Rxa4 Rxd5 1/2-1/2

