[Event "Barranquilla op"]
[Site "Barranquilla"]
[Date "2025.02.28"]
[Round "8"]
[White "Acuna, Nelson David"]
[Black "Varela Sanchez, David Yoel"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "1929"]
[BlackElo "1836"]
[PlyCount "59"]
[EventDate "2025.02.24"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CB10_2025"]
[SourceDate "2025.03.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Bd3 Nc6 6. Nxc6 bxc6 7. 0-0 d5 8. Nc3 a5 9. Qe2 Be7 10. Bf4 Qb6 11. Rab1 Ba6 12. Kh1 Bxd3 13. cxd3 0-0 14. h3 Nd7 15. exd5 cxd5 16. Nxd5 Qc5 17. Nc7 Rad8 18. Rbc1 Qf5 19. Qe4 Nc5 20. Qxf5 exf5 21. Rce1 Rd7 22. d4 Rxd4 23. Rxe7 Rxf4 24. Re5 Nb7 25. Nd5 Ra4 26. a3 g6 27. Rc1 Kg7 28. Rc7 Rb8 29. Nc3 Rd4 30. Rb5 1-0

[Event "Barranquilla op"]
[Site "Barranquilla"]
[Date "2025.02.28"]
[Round "7"]
[White "Esquivia Cuadrado, Franklin Javier"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2082"]
[BlackElo "1929"]
[PlyCount "121"]
[EventDate "2025.02.24"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CB10_2025"]
[SourceDate "2025.03.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.05"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nf6 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 Qb6 9. e3 d6 10. h3 Bd7 11. b3 Ne5 12. e4 a6 13. Be3 Qa5 14. Rc1 Rac8 15. Qd2 Rfe8 16. Rfd1 b5 17. f4 Nc6 18. e5 dxe5 19. Nxc6 Bxc6 20. Bxc6 Rxc6 21. fxe5 Nh5 22. g4 bxc4 23. gxh5 Qxe5 24. Bf4 Qxh5 25. Qd7 Rec8 26. Nd5 Bf8 27. Nxe7+ Bxe7 28. Qxe7 Qxh3 29. Rd8+ Rxd8 30. Qxd8+ Kg7 31. Qd4+ f6 32. Rc3 Qg4+ 33. Rg3 Qf5 34. Qa7+ Kg8 35. Bh6 Qc5+ 36. Qxc5 Rxc5 37. b4 Rb5 38. Bd2 f5 39. Kf2 Kf7 40. Ra3 Rb6 41. Ra5 Rc6 42. Bc3 h6 43. a4 f4 44. b5 axb5 45. axb5 Rd6 46. Bb4 Rb6 47. Bc5 Rb8 48. Bd6 Rb7 49. Bxf4 Ke6 50. Bxh6 c3 51. Ke2 Kd5 52. b6+ Kc4 53. Be3 Kb4 54. Ra7 Rb8 55. Rc7 Kb3 56. Kd3 Kb4 57. Rxc3 Kb5 58. Rc7 Rd8+ 59. Bd4 Rb8 60. b7 Ka6 61. Ke4 1-0

[Event "Barranquilla op"]
[Site "Barranquilla"]
[Date "2025.02.27"]
[Round "6"]
[White "Acuna, Nelson David"]
[Black "Orostegui Cardona, David Eduardo"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1929"]
[BlackElo "1806"]
[PlyCount "59"]
[EventDate "2025.02.24"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CB10_2025"]
[SourceDate "2025.03.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 a5 6. a4 h6 7. Nbd2 0-0 8. 0-0 d6 9. Re1 Be6 10. Bb3 Bxb3 11. Qxb3 Qd7 12. Nc4 Rfe8 13. Be3 Bxe3 14. Nxe3 Rad8 15. Rad1 d5 16. exd5 Nxd5 17. Nc4 Nf4 18. Ncxe5 Nxe5 19. Nxe5 Rxe5 20. Rxe5 Qg4 21. g3 Nh3+ 22. Kg2 Nf4+ 23. Kf1 Qh3+ 24. Ke1 Nxd3+ 25. Rxd3 Rxd3 26. Re8+ Kh7 27. Qxf7 Rd6 28. Qg8+ Kg6 29. Re7 Kh5 30. Qf7+ 1-0

[Event "Barranquilla op"]
[Site "Barranquilla"]
[Date "2025.02.26"]
[Round "4"]
[White "Acuna, Nelson David"]
[Black "Barcelo de la Hoz, Jaider"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "1929"]
[BlackElo "1600"]
[PlyCount "65"]
[EventDate "2025.02.24"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CB10_2025"]
[SourceDate "2025.03.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Be3 Bg7 6. Nc3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. h3 Qa5 10. 0-0 Bd7 11. Qd2 Nxd4 12. Bxd4 Nxe4 13. Qe3 Bxd4 14. Qxe4 Bxc3 15. bxc3 Qg5 16. Qxb7 Bxh3 17. f4 Qc5+ 18. Kh2 Rab8 19. Qxe7 Rbe8 20. Bxf7+ Rxf7 21. Qxe8+ Rf8 22. Qe2 Bd7 23. Rad1 Rf7 24. Qd2 Bg4 25. Rde1 Bd7 26. Qd4 Rf5 27. Re7 Rh5+ 28. Kg1 Bb5 29. Rb1 a6 30. Ra7 Rf5 31. a4 Bxa4 32. Rb8+ Rf8 33. Rg7+ 1-0

[Event "Barranquilla op"]
[Site "Barranquilla"]
[Date "2025.02.26"]
[Round "5"]
[White "Padilla, Daniel Eduardo"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "1817"]
[BlackElo "1929"]
[PlyCount "46"]
[EventDate "2025.02.24"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CB10_2025"]
[SourceDate "2025.03.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. b3 Bb4+ 6. Bd2 Be7 7. 0-0 0-0 8. c4 d5 9. Bf4 c5 10. Nbd2 Nc6 11. e3 cxd4 12. Nxd4 Rc8 13. Nxc6 Bxc6 14. Rc1 dxc4 15. Bxc6 Rxc6 16. Nxc4 Nd5 17. Be5 Bf6 18. Qf3 Bxe5 19. Nxe5 Rxc1 20. Rxc1 Qd6 21. Nc4 Qc5 22. Rd1 b5 23. Ne5 Nc3 1/2-1/2

[Event "Barranquilla op"]
[Site "Barranquilla"]
[Date "2025.02.25"]
[Round "2"]
[White "Acuna, Nelson David"]
[Black "Berdugo Garcia, Gabriela"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1929"]
[BlackElo "1533"]
[PlyCount "71"]
[EventDate "2025.02.24"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CB10_2025"]
[SourceDate "2025.03.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. 0-0 0-0 6. c3 d6 7. a4 a5 8. Nbd2 Be6 9. Bb3 Bxb3 10. Qxb3 Rb8 11. Nc4 Re8 12. Bg5 Re6 13. Rad1 Qe8 14. d4 exd4 15. cxd4 Nxe4 16. dxc5 Nxc5 17. Qb5 b6 18. Be3 Rd8 19. Bxc5 dxc5 20. Ne3 Red6 21. Rxd6 Rxd6 22. Re1 Re6 23. Rd1 h6 24. h3 Qe7 25. Qd3 Qf6 26. Nc4 Nb4 27. Qd7 Re7 28. Qc8+ Kh7 29. Rd8 Nc6 30. Rh8+ Kg6 31. Qg4+ Qg5 32. Nxg5 hxg5 33. f4 f6 34. f5+ Kf7 35. Qh5+ g6 36. Qxg6# 1-0

[Event "Barranquilla op"]
[Site "Barranquilla"]
[Date "2025.02.25"]
[Round "3"]
[White "Carrillo Parra, Miguel Alfredo"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2188"]
[BlackElo "1929"]
[PlyCount "75"]
[EventDate "2025.02.24"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CB10_2025"]
[SourceDate "2025.03.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 d5 5. Qa4+ Nc6 6. e3 0-0 7. Bd2 Bd7 8. Qc2 Re8 9. Be2 Bd6 10. c5 Bf8 11. Ne5 Nxe5 12. dxe5 Ne4 13. Nxe4 dxe4 14. Qxe4 Bxc5 15. Qxb7 Rb8 16. Qe4 Rxb2 17. Bc3 Rb6 18. Rd1 Qe7 19. 0-0 Bc6 20. Qg4 Bd5 21. Rd2 Bb4 22. Qd4 Qg5 23. g3 c5 24. Qd3 Qg6 25. Rc1 a5 26. Bxb4 cxb4 27. Qd4 Rbb8 28. f3 b3 29. a3 Rec8 30. Rxc8+ Rxc8 31. e4 Rd8 32. exd5 Rxd5 33. Qc3 Qb1+ 34. Kg2 g6 35. Rb2 Qf5 36. Rxb3 Rxe5 37. Rb8+ Kg7 38. f4 1-0

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.19"]
[Round "9"]
[White "Acuna, Nelson David"]
[Black "Gonzalez Pereira, Jose David"]
[Result "1-0"]
[ECO "B72"]
[WhiteElo "1951"]
[PlyCount "79"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. h3 Bd7 10. 0-0 Na5 11. Qd2 Re8 12. Bh6 Bh8 13. Rad1 Nxb3 14. axb3 Qa5 15. Rfe1 a6 16. Re3 Rad8 17. Rg3 e5 18. Nde2 Bc6 19. Rd3 Qb4 20. f3 Re6 21. Kh1 Rd7 22. Ng3 Bb5 23. Nxb5 Qxb5 24. Nf5 Ne8 25. Ne3 Bg7 26. Bg5 f6 27. Bh4 Bh6 28. Bf2 Nc7 29. c4 Qc6 30. Qc3 Bxe3 31. Bxe3 Re8 32. Qb4 Re6 33. Qa3 b6 34. Qb4 Na8 35. Qc3 Nc7 36. b4 b5 37. c5 d5 38. exd5 Rxd5 39. Rxd5 Nxd5 40. Qb3 1-0

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.19"]
[Round "8"]
[White "Torres Clavijo, Jose Manuel"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "E20"]
[WhiteElo "1660"]
[BlackElo "1951"]
[PlyCount "113"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 d5 5. e3 0-0 6. Nge2 b6 7. a3 Be7 8. cxd5 exd5 9. Ng3 c5 10. dxc5 bxc5 11. Be2 Nc6 12. 0-0 Rb8 13. Qc2 Ne5 14. h3 d4 15. exd4 cxd4 16. Bf4 Bd6 17. Bxe5 Bxe5 18. Nce4 Nxe4 19. Nxe4 Bf5 20. Bd3 Qb6 21. Rab1 Rfc8 22. Qe2 Qg6 23. g4 Re8 24. Qf3 Bc8 25. Ng3 Qg5 26. Rfe1 Bb7 27. Qf5 Qxf5 28. Nxf5 g6 29. Ng3 Bf3 30. Be4 Bxe4 31. Nxe4 Kg7 32. Nc5 f6 33. b4 Kf7 34. Rbd1 Rb5 35. Nb3 Rd8 36. Rd3 g5 37. Kg2 Kg6 38. Red1 Rbd5 39. Nc5 h5 40. Kf3 f5 41. gxf5+ Kxf5 42. Kg2 g4 43. hxg4+ hxg4 44. Rh1 Rxc5 45. bxc5 Ke4 46. Rhd1 Rc8 47. f3+ gxf3+ 48. Rxf3 Rxc5 49. Re1+ Kd5 50. Rf5 Kd6 51. Kf1 d3 52. Rd1 Rc3 53. Rf3 Rxa3 54. Rfxd3+ Rxd3 55. Rxd3+ Kc6 56. Ra3 Bd4 57. Rxa7 1/2-1/2

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.18"]
[Round "7"]
[White "Acuna, Nelson David"]
[Black "Pinedo Fernandez, David Rebey"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1951"]
[BlackElo "1725"]
[PlyCount "87"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. 0-0 d6 6. c3 Na5 7. Bb5+ c6 8. Ba4 b5 9. Bc2 0-0 10. Nbd2 Re8 11. Re1 Bf8 12. Nf1 g6 13. Bg5 Bg7 14. a4 Qc7 15. Ne3 Be6 16. d4 Nc4 17. axb5 cxb5 18. Bxf6 Nxe3 19. Rxe3 Bxf6 20. h3 Rab8 21. Bb3 Bc4 22. d5 Bg7 23. Bc2 b4 24. Ba4 Rec8 25. cxb4 Qb6 26. b3 Ba6 27. Bc6 f5 28. exf5 gxf5 29. Ng5 f4 30. Qh5 h6 31. Bd7 Rc7 32. Be6+ Kh8 33. Rc3 Re7 34. Nf7+ Rxf7 35. Qxf7 e4 36. Rc7 Qd4 37. Rxa6 e3 38. Ra2 f3 39. gxf3 exf2+ 40. Rxf2 Qa1+ 41. Kg2 Qe5 42. Rfc2 Qg5+ 43. Bg4 Rf8 44. Rc8 1-0

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.18"]
[Round "6"]
[White "Carbono Lopez, Elkin Leandro"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "1600"]
[BlackElo "1951"]
[PlyCount "65"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c3 Bg7 6. Be2 Nf6 7. Qc2 0-0 8. Be3 d6 9. f3 d5 10. Nxc6 bxc6 11. exd5 Nxd5 12. Bf2 e5 13. Nd2 Qa5 14. Nc4 Qc7 15. 0-0 Nf4 16. Bd3 Rd8 17. Rad1 Rxd3 18. Rxd3 Bf5 19. Rfd1 Nxd3 20. Rxd3 Bxd3 21. Qxd3 Rd8 22. Qe2 Qd7 23. Be3 f5 24. g3 Re8 25. Na5 e4 26. Qc4+ Kh8 27. Qxc6 Qd1+ 28. Kg2 Qxf3+ 29. Kh3 Rf8 30. Qc5 h6 31. Bd4 Qf1+ 32. Kh4 Kh7 33. Qc4 0-1

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.17"]
[Round "5"]
[White "Acuna, Nelson David"]
[Black "Pena De Lima, Carlos Andres"]
[Result "1/2-1/2"]
[ECO "B95"]
[WhiteElo "1951"]
[BlackElo "1728"]
[PlyCount "72"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f3 h6 8. Be3 b5 9. a3 Nbd7 10. Qd2 Bb7 11. 0-0-0 h5 12. Kb1 Be7 13. Qe1 Rc8 14. Rg1 Qc7 15. g3 d5 16. Rg2 0-0 17. h3 Ne5 18. f4 Nc4 19. e5 Nxe3 20. Qxe3 Ne4 21. Nxe4 dxe4 22. Re2 Bd5 23. Bg2 Qc4 24. Nb3 Bc5 25. Nxc5 Qa2+ 26. Kc1 Rfd8 27. c4 bxc4 28. Red2 Qa1+ 29. Kc2 Qa2 30. Kc1 Qa1+ 31. Kc2 Qa2 32. Kc1 Rxc5 33. Qxc5 Rb8 34. Bxe4 Bxe4 35. Rd8+ Rxd8 36. Rxd8+ Kh7 1/2-1/2

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.17"]
[Round "4"]
[White "Payares Diaz, Alejandro"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "1792"]
[BlackElo "1951"]
[PlyCount "81"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. 0-0 Bg7 5. d3 Nf6 6. e4 0-0 7. Re1 d6 8. c3 e5 9. h3 Re8 10. Nbd2 b5 11. a4 b4 12. c4 a5 13. b3 Ra7 14. Nf1 h6 15. Ne3 Nd4 16. Bb2 Rae7 17. Nd2 Bb7 18. Nd5 Nxd5 19. cxd5 f5 20. Bxd4 exd4 21. Rf1 Ba6 22. Nc4 fxe4 23. Bxe4 Bxc4 24. bxc4 Rxe4 25. dxe4 Rxe4 26. Re1 Qe7 27. Rxe4 Qxe4 28. Qg4 Qe5 29. Qxg6 Kf8 30. Qd3 h5 31. Kf1 Qe8 32. Re1 Qf7 33. Re6 Be5 34. Ke2 h4 35. g4 Qf4 36. Qh7 Qf7 37. Qxh4 d3+ 38. Kf1 d2 39. Qh6+ Bg7 40. Qxd2 Qf3 41. Qg5 1-0

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.16"]
[Round "2"]
[White "Acuna, Nelson David"]
[Black "Fonseca Pacheco, Yeiner David"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1951"]
[BlackElo "1600"]
[PlyCount "79"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. Bd3 cxd4 7. cxd4 Bd7 8. Be2 Nge7 9. Nc3 Nf5 10. Na4 Bb4+ 11. Kf1 Qa5 12. a3 Be7 13. b4 Qc7 14. Bb2 a5 15. b5 Na7 16. Rc1 Qd8 17. Qb3 b6 18. Nc3 Bg5 19. Rd1 0-0 20. a4 Be7 21. Bd3 Nh4 22. Qc2 g6 23. Nxh4 Bxh4 24. g3 Be7 25. h4 f5 26. exf6 Bxf6 27. h5 Bxd4 28. Rh2 Qg5 29. Bxg6 hxg6 30. Rxd4 gxh5 31. Qe2 Be8 32. Qxe6+ Bf7 33. Qxb6 Nc8 34. Qc5 Ne7 35. Ne4 Rac8 36. Qxc8 dxe4 37. Qc1 Qg6 38. Qc3 e3 39. Rg4 e2+ 40. Ke1 1-0

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.16"]
[Round "3"]
[White "Acuna, Nelson David"]
[Black "Mitkov, Nikola"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1951"]
[BlackElo "2368"]
[PlyCount "88"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qd7 9. Nxe4 Be7 10. Bg5 0-0 11. Bxe7 Qxe7 12. Nxd4 Bd7 13. Ng3 Qf6 14. Nxc6 Bxc6 15. c3 Rad8 16. Qc2 g6 17. Rad1 h5 18. Ne4 Qe6 19. f3 Bxe4 20. fxe4 Rxd1 21. Rxd1 Qxa2 22. c4 Qa6 23. Qc3 Qe6 24. Re1 Re8 25. b3 Qe5 26. Qe3 a5 27. g3 b6 28. Kf2 Kg7 29. Re2 Re7 30. Qf4 Qd4+ 31. Kg2 a4 32. e5 Qxf4 33. gxf4 axb3 34. Rb2 f6 35. exf6+ Kxf6 36. Kf3 Kf5 37. Rxb3 Re4 38. Rb5+ c5 39. Rxb6 Rxf4+ 40. Kg3 Rg4+ 41. Kf3 Rxc4 42. Rc6 Rc3+ 43. Kg2 g5 44. Rc8 Ke5 0-1

[Event "Cienaga op"]
[Site "Cienaga"]
[Date "2024.12.15"]
[Round "1"]
[White "Marquez Leon, Jaime Jatnyel"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1533"]
[BlackElo "1951"]
[PlyCount "86"]
[EventDate "2024.12.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Nbd2 d5 4. e3 Be7 5. Bd3 c5 6. b3 a6 7. Bb2 Nc6 8. a3 b5 9. c4 bxc4 10. bxc4 cxd4 11. Nxd4 Nxd4 12. Bxd4 0-0 13. 0-0 Bb7 14. Rb1 dxc4 15. Nxc4 Bc6 16. Ne5 Bd5 17. Qa4 Bd6 18. g3 Bxe5 19. Bxe5 Bf3 20. Bxf6 Qxf6 21. Be4 Bxe4 22. Qxe4 Qc3 23. Qb4 Qf6 24. Rfc1 Rfd8 25. Rc7 g6 26. Rbc1 h5 27. Qe7 Qf3 28. Rd7 Rdb8 29. h4 Rb2 30. Rd8+ Kh7 31. Rf1 Rxd8 32. Qxd8 Qf5 33. Qd4 Rc2 34. Qa4 a5 35. Qd4 Ra2 36. e4 Qf3 37. a4 Re2 38. Qa7 g5 39. Qe7 gxh4 40. Qxh4 Rxe4 41. Qg5 h4 42. Kh2 f6 43. Qd2 hxg3+ 0-1

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.06.02"]
[Round "11"]
[White "Acuna, Nelson David"]
[Black "Mora Moron, Jose Ramon"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "1934"]
[BlackElo "2138"]
[PlyCount "92"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6 bxc6 7. 0-0 Qc7 8. Nd2 Nf6 9. c4 Be7 10. Re1 d5 11. exd5 cxd5 12. cxd5 Nxd5 13. Be4 Bb7 14. Nf3 0-0 15. Bg5 Bxg5 16. Nxg5 h6 17. Nf3 Rfd8 18. Bxd5 Rxd5 19. Qe2 Rc8 20. h3 Rf5 21. Nh4 Rf4 22. Qh5 Qb6 23. Nf3 Rc5 24. Re5 Bxf3 25. gxf3 Rxe5 26. Qxe5 Rxf3 27. Rf1 Rxh3 28. Qe4 Qd6 29. f4 Qd2 30. Qg2 Qe3+ 31. Qf2 Qe4 32. Qg2 Qxg2+ 33. Kxg2 Rd3 34. Rf2 g5 35. fxg5 hxg5 36. b4 Kg7 37. Rb2 Ra3 38. Kf2 f5 39. Kg2 Kf6 40. Kf2 g4 41. Kg2 e5 42. Kf2 f4 43. Re2 Kf5 44. Rc2 g3+ 45. Kg1 f3 46. Rb2 Kf4 0-1

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.31"]
[Round "10"]
[White "Perez Tangarife, Simon"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1755"]
[BlackElo "1934"]
[PlyCount "58"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Nbd2 0-0 5. c3 d6 6. Be2 c5 7. 0-0 b6 8. e4 Bb7 9. e5 Nfd7 10. e6 fxe6 11. Ng5 Rf6 12. Bg4 Nf8 13. Qe2 Ba6 14. c4 Nc6 15. Ndf3 e5 16. dxe5 dxe5 17. Ne4 Rxf3 18. Qxf3 Bxc4 19. Rd1 Nd4 20. Qh3 Bd5 21. Nc3 Bc6 22. Bh6 Qd6 23. Bxg7 Kxg7 24. Qe3 Qf6 25. Rac1 h5 26. Be2 Nfe6 27. Bf1 Rf8 28. Re1 Ng5 29. Be2 Nf5 0-1

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.30"]
[Round "9"]
[White "Acuna, Nelson David"]
[Black "Ramirez, Carlos"]
[Result "0-1"]
[ECO "B17"]
[WhiteElo "1934"]
[BlackElo "2163"]
[PlyCount "50"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. h3 Bf5 8. Bd3 Bxd3 9. Qxd3 e6 10. 0-0 Bd6 11. Re1 0-0 12. Bg5 h6 13. Bxf6 Qxf6 14. Qb3 Rab8 15. Rad1 Rfd8 16. c4 c5 17. dxc5 Bxc5 18. Qb5 Qe7 19. a3 Qc7 20. b4 Be7 21. c5 a5 22. Rc1 Rd5 23. Qe2 Rbd8 24. Ne5 Bg5 25. Rc2 Rxe5 0-1

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.29"]
[Round "8"]
[White "Munoz Sanchez, Miguel Angel"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2194"]
[BlackElo "1934"]
[PlyCount "28"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8. 0-0 d5 9. Nc3 dxc4 10. bxc4 Bxc4 11. Ne5 Ba6 12. Nxc6 Nxc6 13. Bxc6+ Nd7 14. Nb1 Bc8 1-0

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.28"]
[Round "7"]
[White "Acuna, Nelson David"]
[Black "Bolanos Lopez, Juan Jacobo"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "1934"]
[BlackElo "2160"]
[PlyCount "117"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. a3 Qc7 7. 0-0 b5 8. Qe2 d6 9. c4 bxc4 10. Bxc4 Be7 11. Nc3 0-0 12. Bg5 Nc6 13. Nf3 Bb7 14. Rac1 Rfd8 15. Ba2 Qa5 16. Rfd1 Rac8 17. Bd2 Qh5 18. Bc4 Ne5 19. Nxe5 Qxe2 20. Bxe2 dxe5 21. Be3 h6 22. f3 Rxd1+ 23. Rxd1 Bxa3 24. Na4 Be7 25. b3 Kf8 26. Bc4 Ke8 27. Nb6 Rc6 28. Ra1 Bd8 29. Na4 Nd7 30. Kf2 Nb6 31. Nb2 Nxc4 32. Nxc4 f6 33. Ke2 Be7 34. Na5 Rc2+ 35. Kd3 Rc7 36. Bb6 Rd7+ 37. Kc3 f5 38. Nxb7 Rxb7 39. Rxa6 Kd7 40. b4 h5 41. Kc4 g5 42. Ra7 Rxa7 43. Bxa7 g4 44. h3 gxh3 45. gxh3 fxe4 46. fxe4 Kc6 47. Bb8 Bf6 48. b5+ Kb7 49. Bd6 Kb6 50. Kb4 Bg7 51. Be7 Bh6 52. Bd8+ Kb7 53. Kc5 Bf8+ 54. Kc4 Bh6 55. Bf6 Bf4 56. Kc5 Kc7 57. b6+ Kd7 58. Kb5 Kc8 59. Kc6 1-0

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.27"]
[Round "5"]
[White "Acuna, Nelson David"]
[Black "Garzon Camelo, Andres Santiago"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1934"]
[BlackElo "2099"]
[PlyCount "113"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 d6 5. d3 h6 6. c3 Nf6 7. a4 a5 8. Nbd2 0-0 9. h3 Ba7 10. Re1 Ne7 11. Nf1 Ng6 12. d4 Re8 13. Ng3 c6 14. Bb3 Qc7 15. Qc2 d5 16. exd5 cxd5 17. dxe5 Nxe5 18. Rxe5 Rxe5 19. Bf4 Re1+ 20. Rxe1 Qxf4 21. Nh5 Qd6 22. Nxf6+ gxf6 23. Re8+ Kg7 24. Qe2 Rb8 25. Nd4 Bxd4 26. cxd4 Be6 27. Rxb8 Qxb8 28. Qb5 Qf4 29. Bxd5 Qc1+ 30. Kh2 Bxd5 31. Qxd5 Qxb2 32. Qxa5 Qxd4 33. Kg3 h5 34. Qxh5 Qxa4 35. Qg4+ Qxg4+ 36. Kxg4 Kg6 37. h4 b6 38. f4 f5+ 39. Kf3 Kh5 40. g3 f6 41. Ke3 Kg4 42. Kd4 b5 43. Kc5 Kxg3 44. h5 Kxf4 45. h6 Ke3 46. h7 f4 47. h8Q f3 48. Qxf6 f2 49. Qe5+ Kf3 50. Qd5+ Ke2 51. Qe4+ Kf1 52. Kd4 Kg1 53. Qg4+ Kh1 54. Qf3+ Kg1 55. Qg3+ Kh1 56. Qxf2 b4 57. Ke3 1-0

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.27"]
[Round "6"]
[White "Echavarria, Johann"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2277"]
[BlackElo "1934"]
[PlyCount "43"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Nc3 c6 8. e4 d5 9. Bd3 dxe4 10. Nxe4 Bb7 11. Qe2 0-0 12. Bc3 Na6 13. 0-0 c5 14. Rad1 Qc7 15. d5 Nxe4 16. Bxe4 exd5 17. Bxd5 Rae8 18. Rfe1 Bc6 19. Qb2 Bxd5 20. cxd5 f6 21. Qe2 Qc8 22. d6 1-0

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.26"]
[Round "4"]
[White "Guerrero Avila, Hernando"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1745"]
[BlackElo "1934"]
[PlyCount "76"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e3 Be7 4. Nd2 d5 5. Bd3 0-0 6. Bxf6 Bxf6 7. Qh5 g6 8. Qf3 Nd7 9. Qe2 c5 10. c3 e5 11. dxe5 Nxe5 12. Ngf3 Nxd3+ 13. Qxd3 c4 14. Qe2 Bf5 15. 0-0 Bd3 16. Qe1 b5 17. Nd4 Bxd4 18. exd4 Qf6 19. Nf3 Bxf1 20. Kxf1 Rfe8 21. Qd2 Kg7 22. Ne5 Qf5 23. h3 Re6 24. a4 f6 25. Ng4 bxa4 26. Qh6+ Kg8 27. Kg1 Rae8 28. Rxa4 a6 29. Ra5 g5 30. Kh2 Rf8 31. Rc5 Re1 32. Qh5 Qf4+ 33. g3 Qe4 34. Nxf6+ Rxf6 35. Qxg5+ Qg6 36. Rc8+ Kg7 37. Rc7+ Kf8 38. Rc8+ Ke7 0-1

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.25"]
[Round "3"]
[White "Acuna, Nelson David"]
[Black "Pardo Useche, Laura Valentina"]
[Result "1/2-1/2"]
[ECO "B98"]
[WhiteElo "1934"]
[BlackElo "1746"]
[PlyCount "97"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Nc6 9. 0-0-0 Nxd4 10. Rxd4 Qb6 11. Rd2 Bd7 12. Qg3 Qc7 13. Be2 Bc6 14. e5 dxe5 15. fxe5 Nd5 16. Nxd5 Bxd5 17. Bxe7 Qxe7 18. Bf3 0-0 19. Bxd5 exd5 20. Rxd5 Rad8 21. Rhd1 Rxd5 22. Rxd5 Rd8 23. Rd6 g6 24. Qd3 Re8 25. Rd5 Qg5+ 26. Qd2 Qf5 27. b3 Rxe5 28. Rd8+ Kg7 29. Qd4 Qf6 30. Kb2 Re6 31. h4 Qxd4+ 32. Rxd4 Kf6 33. g4 Re7 34. a4 h6 35. b4 Ke5 36. c3 f5 37. Kc2 fxg4 38. Rxg4 Kf5 39. Rd4 g5 40. hxg5 hxg5 41. Rd8 g4 42. Rf8+ Kg5 43. Kd2 Kh4 44. Rg8 Kh3 45. Kd3 g3 46. c4 g2 47. b5 axb5 48. axb5 Re5 49. Kd4 1/2-1/2

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.25"]
[Round "2"]
[White "Alboredo, Julia"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2202"]
[BlackElo "1934"]
[PlyCount "59"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. 0-0 Bg7 6. Re1 Nf6 7. e5 Nd5 8. c4 Nc7 9. d4 cxd4 10. Qxd4 0-0 11. Qh4 d6 12. Bh6 f6 13. Bxg7 Kxg7 14. exf6+ exf6 15. Nc3 Bf5 16. Nd4 Qd7 17. Nxf5+ gxf5 18. Ne2 Rae8 19. Ng3 Kh8 20. Qh6 Kg8 21. Nh5 Qf7 22. Rxe8 Nxe8 23. Re1 d5 24. cxd5 cxd5 25. h3 Qg6 26. Qxg6+ hxg6 27. Nf4 Nd6 28. Nxd5 Rb8 29. b3 Ne8 30. Rxe8+ 1-0

[Event "American Continental 18th"]
[Site "Medellin"]
[Date "2024.05.24"]
[Round "1"]
[White "Acuna, Nelson David"]
[Black "Alzate Arango, John Ubaldo"]
[Result "1-0"]
[ECO "B18"]
[WhiteElo "1934"]
[PlyCount "57"]
[EventDate "2024.05.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Qd3 e6 6. Nf3 Nf6 7. Nxf6+ Qxf6 8. Qb3 Qe7 9. Bd2 Qc7 10. Bd3 Bxd3 11. Qxd3 Nd7 12. c4 Bd6 13. g3 0-0-0 14. 0-0 Qb8 15. b4 h5 16. c5 Bc7 17. b5 h4 18. bxc6 Nxc5 19. Qc4 Ne4 20. Rab1 Nxd2 21. Nxd2 hxg3 22. Rxb7 gxf2+ 23. Kg2 Rxh2+ 24. Kf3 Rh3+ 25. Ke2 Qxb7 26. cxb7+ Kxb7 27. Rxf2 Rh2 28. Rxh2 Bxh2 29. Nb3 1-0

[Event "Barranquilla Carnaval Cup"]
[Site "Barranquilla"]
[Date "2024.02.07"]
[Round "8"]
[White "Acuna, Nelson David"]
[Black "Pena De Lima, Carlos Andres"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "1908"]
[BlackElo "1515"]
[PlyCount "89"]
[EventDate "2024.02.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 218 Extra"]
[Source "ChessBase"]
[SourceDate "2024.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.31"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nxd5 Qxd5 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Be7 8. d4 0-0 9. c4 Qd8 10. Qb3 b6 11. Be3 c5 12. Rfd1 Qc7 13. h3 Bh5 14. d5 exd5 15. cxd5 Bd6 16. Rac1 Nd7 17. Qc4 Ne5 18. Nxe5 Bxe2 19. Qxe2 Bxe5 20. b4 Bd6 21. bxc5 bxc5 22. Rc4 Rac8 23. Qh5 g6 24. Qh4 f5 25. Rdc1 Qb7 26. Bxc5 Bxc5 27. Rxc5 Rxc5 28. Rxc5 Qb1+ 29. Kh2 Qxa2 30. Qd4 Qa6 31. d6 Rd8 32. Qd5+ Kf8 33. Rc6 Qb7 34. Qc4 Qf7 35. Qc5 Qd7 36. f4 a5 37. Qxa5 Re8 38. Qc5 Rd8 39. Qd5 Qf7 40. Qd4 Qg7 41. Qe3 Qd7 42. Ra6 Qe8 43. Qd4 Qe4 44. Qh8+ Kf7 45. Qxh7+ 1-0

[Event "Barranquilla Carnaval Cup"]
[Site "Barranquilla"]
[Date "2024.02.07"]
[Round "9"]
[White "Basilio Santos, Eleazar"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1634"]
[BlackElo "1908"]
[PlyCount "81"]
[EventDate "2024.02.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 218 Extra"]
[Source "ChessBase"]
[SourceDate "2024.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. Nf3 Nc6 5. c3 e6 6. Bd3 cxd4 7. exd4 Bd6 8. Bg5 0-0 9. 0-0 h6 10. Bh4 Re8 11. Nbd2 e5 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. Nf3 Bf4 15. Qa4 Bd6 16. Bxf6 gxf6 17. Qh4 Bf8 18. Nd4 f5 19. Qxd8 Rxd8 20. Nxf5 Be6 21. Rfd1 a5 22. Nd4 a4 23. a3 Rd6 24. Rd2 Bg7 25. Nf5 Rb6 26. Nxg7 Kxg7 27. Rad1 Re8 28. Be2 Rd8 29. Bf3 Rb5 30. c4 Rb6 31. cxd5 Bf5 32. h3 Rbd6 33. Rd4 b5 34. Rc1 Bd7 35. Rc5 Re8 36. Kf1 Re5 37. Be2 Rb6 38. Rb4 Rd6 39. Bxb5 Rexd5 40. Rxd5 Rxd5 41. Bxd7 1-0

[Event "Barranquilla Carnaval Cup"]
[Site "Barranquilla"]
[Date "2024.02.06"]
[Round "6"]
[White "Acuna, Nelson David"]
[Black "Narvaez Ramirez, Faber Alberto"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1908"]
[BlackElo "2067"]
[PlyCount "90"]
[EventDate "2024.02.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 218 Extra"]
[Source "ChessBase"]
[SourceDate "2024.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. dxc5 Bxc5 7. Qc2 a5 8. Bd3 Nge7 9. 0-0 Ng6 10. Qe2 Bd7 11. a4 0-0 12. Na3 f6 13. Bxg6 hxg6 14. Bf4 g5 15. Bg3 Ne7 16. exf6 gxf6 17. Nb5 Bxb5 18. axb5 Nf5 19. Nd2 a4 20. Bc7 Qxc7 21. Qxe6+ Kg7 22. Qxf5 Rh8 23. Nf3 a3 24. bxa3 Bxa3 25. Rad1 Rad8 26. Rfe1 Rh6 27. g3 Bc5 28. Rxd5 Rxd5 29. Qxd5 g4 30. Nh4 Rxh4 31. gxh4 g3 32. hxg3 Qxg3+ 33. Kh1 Qxh4+ 34. Kg2 Qxf2+ 35. Kh3 Qxe1 36. Qxc5 Qf1+ 37. Kg3 Qd3+ 38. Kf4 Kg6 39. b6 Qd2+ 40. Ke4 Qg2+ 41. Kd3 Qf1+ 42. Kc2 Qf5+ 43. Qxf5+ Kxf5 44. Kd3 Ke5 45. c4 Kd6 0-1

[Event "Barranquilla Carnaval Cup"]
[Site "Barranquilla"]
[Date "2024.02.06"]
[Round "7"]
[White "Viasus Cuellar, Juan Diego"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "1560"]
[BlackElo "1908"]
[PlyCount "80"]
[EventDate "2024.02.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 218 Extra"]
[Source "ChessBase"]
[SourceDate "2024.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.31"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 g6 4. g3 Bg7 5. Bg2 Nf6 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 Qb6 9. e3 Qb4 10. Qe2 a6 11. a3 Qa5 12. b4 Qe5 13. Nxc6 dxc6 14. Bb2 Qc7 15. Ne4 Nxe4 16. Bxe4 e5 17. Rfd1 Be6 18. Qc2 Bg4 19. f3 Bh3 20. Bd3 h5 21. Bf1 Be6 22. f4 Rad8 23. Rxd8 Rxd8 24. Rd1 Rxd1 25. Qxd1 c5 26. fxe5 Bxe5 27. Bxe5 Qxe5 28. Qf3 b5 29. cxb5 axb5 30. bxc5 Qxc5 31. Qa8+ Kh7 32. Qf3 Bd5 33. Qf4 Be6 34. Qd4 Qxa3 35. Bxb5 Qc1+ 36. Bf1 Bh3 37. Qf4 f5 38. e4 Qd1 39. exf5 Bxf5 40. Qc7+ Kh6 1/2-1/2

[Event "Barranquilla Carnaval Cup"]
[Site "Barranquilla"]
[Date "2024.02.05"]
[Round "5"]
[White "Brito Carrascal, Camilo Andres"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1985"]
[BlackElo "1908"]
[PlyCount "181"]
[EventDate "2024.02.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 218 Extra"]
[Source "ChessBase"]
[SourceDate "2024.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 c6 7. Bd3 Bd6 8. Nge2 h6 9. Bh4 a5 10. f3 0-0 11. 0-0 b5 12. Rc1 Qb6 13. Bf2 b4 14. Na4 Qc7 15. Bb5 Bb7 16. Ng3 Rfe8 17. Re1 Nb6 18. Kh1 Nxa4 19. Bxa4 Qb6 20. Nf5 Bf8 21. Bh4 Re6 22. Bf2 g6 23. Ng3 h5 24. Ne2 Bh6 25. Nf4 Re7 26. h4 Rae8 27. g3 Rc8 28. Kg2 Bg7 29. Re2 Ne8 30. Nd3 Ba6 31. Rec2 Bxd3 32. Qxd3 Re6 33. e4 Nf6 34. exd5 Nxd5 35. Rc5 Rd6 36. Bb3 Ne7 37. Qe4 Qd8 38. Qf4 Nf5 39. Rxf5 gxf5 40. Qxf5 Rc7 41. Qxh5 Re7 42. Rc5 a4 43. Bc4 Rh6 44. Qg4 Qd7 45. Qf4 Qd6 46. Qg4 Qd7 47. Qg5 Qd6 48. Ra5 Rg6 49. Ra8+ Bf8 50. Qf5 Qf6 51. Qc8 Qg7 52. Bd3 Rge6 53. Ra5 Re8 54. Qd7 R8e7 55. Qd8 Re8 56. Qd7 R8e7 57. Qc8 Re8 58. Qb7 Be7 59. Bc4 Rg6 60. Qd7 Kf8 61. g4 Rd8 62. Qf5 Rf6 63. Qe4 Qg6 64. Qxg6 fxg6 65. Rxa4 Rf4 66. Ra7 c5 67. Be3 Rfxd4 68. Bxd4 Rxd4 69. b3 Bxh4 70. Kh3 Be7 71. Kg2 Rd2+ 72. Kf1 g5 73. Ke1 Rb2 74. a4 bxa3 75. Rxa3 Rh2 76. Be2 Kf7 77. Ra6 Rh1+ 78. Kd2 Rb1 79. Bd1 Bf6 80. Bc2 Ra1 81. Rc6 Be7 82. Bd3 Ke8 83. Bf5 Ra8 84. Ke3 Rd8 85. Ke4 Kf7 86. Ke5 Rd4 87. Be4 Rb4 88. Rc7 Rd4 89. Bd5+ Ke8 90. Ke6 Bf6 91. Kxf6 1-0

[Event "Barranquilla Carnaval Cup"]
[Site "Barranquilla"]
[Date "2024.02.04"]
[Round "4"]
[White "Acuna, Nelson David"]
[Black "Vasquez Garrido, Nuremberg Adin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1908"]
[BlackElo "1976"]
[PlyCount "63"]
[EventDate "2024.02.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 218 Extra"]
[Source "ChessBase"]
[SourceDate "2024.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.31"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 d5 3. exd5 Qxd5 4. d4 Bg4 5. Nc3 Qa5 6. h3 Bh5 7. Bb5 a6 8. Bxc6+ bxc6 9. Qd3 Bg6 10. Qc4 Qb6 11. Ne5 Rd8 12. Be3 Nf6 13. Nxc6 Rd6 14. d5 Qb7 15. 0-0-0 Bf5 16. Bc5 e6 17. Bxd6 Bxd6 18. g4 exd5 19. Nxd5 Be6 20. Nxf6+ gxf6 21. Qe4 Kf8 22. Rhe1 Bxa2 23. Qa4 Be6 24. Nd8 Qf3 25. Rxe6 fxe6 26. Qd7 Be7 27. Qxe6 Qxd1+ 28. Kxd1 Bxd8 29. Qxa6 Kg7 30. Qe6 Rf8 31. Qd7+ Kg8 32. f4 1-0

[Event "Barranquilla Carnaval Cup"]
[Site "Barranquilla"]
[Date "2024.02.04"]
[Round "3"]
[White "Guerrero Fandino, Gustavo A"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "B34"]
[WhiteElo "2117"]
[BlackElo "1908"]
[PlyCount "77"]
[EventDate "2024.02.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 218 Extra"]
[Source "ChessBase"]
[SourceDate "2024.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nxc6 bxc6 7. Bd4 Bxd4 8. Qxd4 Nf6 9. Nc3 Qa5 10. Bc4 d6 11. 0-0 0-0 12. f4 Ba6 13. b4 Qb6 14. Qxb6 axb6 15. Bxa6 Rxa6 16. a4 Rfa8 17. Ra2 b5 18. a5 c5 19. e5 dxe5 20. bxc5 b4 21. fxe5 Nd7 22. Nd5 Nxc5 23. Rfa1 b3 24. cxb3 Nxb3 25. Rb1 Rxa5 26. Rxa5 Nxa5 27. Nxe7+ Kf8 28. Nd5 Nc4 29. Re1 Ra5 30. Nf6 h5 31. Re4 Ra1+ 32. Kf2 Ra2+ 33. Kg3 Nd2 34. Rb4 Ke7 35. Kf4 Nf1 36. Rb7+ Ke6 37. Rb6+ Ke7 38. Rb7+ Ke6 39. Rb6+ 1/2-1/2

[Event "Barranquilla Carnaval Cup"]
[Site "Barranquilla"]
[Date "2024.02.03"]
[Round "1"]
[White "Garcia Gonzalez, Jose"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "1679"]
[BlackElo "1908"]
[PlyCount "66"]
[EventDate "2024.02.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 218 Extra"]
[Source "ChessBase"]
[SourceDate "2024.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be2 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Qd2 d5 9. exd5 Nxd5 10. Nxc6 bxc6 11. Nxd5 cxd5 12. c3 e5 13. 0-0 Be6 14. Bc5 Re8 15. Bb5 Bd7 16. Be2 Bc6 17. Rad1 Qc7 18. Rfe1 Rad8 19. Bf1 d4 20. cxd4 exd4 21. b4 Be5 22. g3 Qd7 23. f4 Bf6 24. Rxe8+ Rxe8 25. Qf2 Qf5 26. Rd2 Qe4 27. Bg2 Qb1+ 28. Bf1 Re1 29. Re2 Rd1 30. Qf3 h5 31. Qxc6 Rxf1+ 32. Kg2 Rg1+ 33. Kh3 Qf5+ 0-1

[Event "COL-ch"]
[Site "Cartagena"]
[Date "2023.06.12"]
[Round "9"]
[White "Acuna, Nelson David"]
[Black "Vasquez Lara, Andres Camilo"]
[Result "0-1"]
[ECO "B18"]
[WhiteElo "1978"]
[PlyCount "66"]
[EventDate "2023.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 e6 7. Ne5 Ne7 8. h4 h6 9. h5 Bh7 10. Bc4 Nd5 11. c3 Bd6 12. Qe2 0-0 13. Qg4 Qf6 14. f4 c5 15. 0-0 Nb6 16. f5 Nxc4 17. Ne4 Qxf5 18. Rxf5 exf5 19. Nf6+ Kh8 20. Qe2 Nxe5 21. dxe5 Bc7 22. Nxh7 Kxh7 23. Qf3 Nc6 24. Qxf5+ Kh8 25. Bf4 Rae8 26. Re1 Re6 27. g4 Ne7 28. Qe4 Nc6 29. Qd5 b6 30. Qd7 Bxe5 31. Bxe5 Nxe5 32. Rxe5 Rxe5 33. Qxa7 Re6 0-1

[Event "COL-ch"]
[Site "Cartagena"]
[Date "2023.06.11"]
[Round "7"]
[White "Pena De Lima, Carlos Andres"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "1451"]
[BlackElo "1978"]
[PlyCount "83"]
[EventDate "2023.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 d5 6. b3 Nbd7 7. Bb2 Bd6 8. Ne5 0-0 9. 0-0 c5 10. Qe2 a6 11. a4 Ne4 12. Rac1 Nxd2 13. Qxd2 Qc7 14. f4 Bxe5 15. fxe5 c4 16. Be2 f6 17. Ba3 Rf7 18. Bd6 Qc6 19. Qe1 b5 20. a5 Nf8 21. Qg3 Rd8 22. h4 f5 23. Qg5 Rxd6 24. exd6 Qxd6 25. bxc4 dxc4 26. Qf4 Qd8 27. Bh5 g6 28. Bf3 Qxa5 29. Bxb7 Rxb7 30. h5 gxh5 31. Qf3 Rg7 32. d5 Qb6 33. dxe6 Qxe6 34. Rcd1 Rf7 35. Rd8 Kg7 36. Rfd1 Qe5 37. Qxh5 Qxe3+ 38. Kh1 Rf6 39. R1d7+ Nxd7 40. Rxd7+ Kf8 41. Rd8+ Kg7 42. Rd7+ 1/2-1/2

[Event "COL-ch"]
[Site "Cartagena"]
[Date "2023.06.10"]
[Round "6"]
[White "Acuna, Nelson David"]
[Black "Orostegui Cardona, David Eduardo"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1978"]
[BlackElo "1679"]
[PlyCount "66"]
[EventDate "2023.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qd7 9. Rxe4+ Be7 10. Nxd4 f5 11. Rf4 0-0 12. Nxc6 Qxc6 13. Nd5 Bd6 14. Rd4 Be6 15. c4 Rfe8 16. Be3 Be5 17. Rd2 Bxd5 18. cxd5 Qf6 19. Rc1 Rad8 20. Qb3 Qd6 21. g3 Kh8 22. Bc5 Qh6 23. f4 b6 24. Ba3 c5 25. Qf3 Bd4+ 26. Kg2 Be3 27. Rcd1 Bxd2 28. Rxd2 Re4 29. b3 Rd4 30. Rxd4 cxd4 31. Be7 Re8 32. d6 Qe6 33. Qc6 Rxe7 0-1

[Event "COL-ch"]
[Site "Cartagena"]
[Date "2023.06.10"]
[Round "5"]
[White "Brito Carrascal, Camilo Andres"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1896"]
[BlackElo "1978"]
[PlyCount "64"]
[EventDate "2023.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 d6 8. Be2 0-0 9. 0-0 Bd7 10. h3 Nxd4 11. Bxd4 Bc6 12. Qc2 Nd7 13. Bxg7 Kxg7 14. Bg4 Nf6 15. Rad1 Nxg4 16. hxg4 Qa5 17. a3 Qg5 18. Qe2 a5 19. b4 axb4 20. axb4 b6 21. Nd5 Bxd5 22. Rxd5 Qf6 23. e5 dxe5 24. Rxe5 Rfc8 25. Rxe7 Rxc4 26. Qxc4 Qxe7 27. Qc6 Rb8 28. b5 Qe5 29. Rc1 Rd8 30. Qxb6 Rb8 31. Qc5 Rxb5 32. Qxe5+ Rxe5 1/2-1/2

[Event "COL-ch"]
[Site "Cartagena"]
[Date "2023.06.09"]
[Round "4"]
[White "Acuna, Nelson David"]
[Black "Cifuentes Camacho, Miguel Angel"]
[Result "1/2-1/2"]
[ECO "B28"]
[WhiteElo "1978"]
[BlackElo "1582"]
[PlyCount "92"]
[EventDate "2023.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nf3 Nc6 7. a3 Bc5 8. Bc4 d6 9. h3 0-0 10. 0-0 b5 11. Ba2 h6 12. Qd3 b4 13. Nd5 bxa3 14. bxa3 Be6 15. Be3 Bxe3 16. Nxe3 Bxa2 17. Rxa2 Qc7 18. Nf5 Rfd8 19. Rb2 d5 20. Qc3 Rd7 21. exd5 Nxd5 22. Qe1 h5 23. Ng3 Nf4 24. Qe4 f6 25. Rfb1 Ra7 26. Qc4+ Kh8 27. Rb6 Ne7 28. Rb8+ Kh7 29. Qf7 Nc8 30. Qe8 Rd8 31. Qa4 Nd6 32. Rxd8 Qxd8 33. Rd1 Qc7 34. Qb4 Nc4 35. Ne4 Qc6 36. Nc5 Rc7 37. Qxc4 Qxc5 38. Qe4+ g6 39. Rd8 Rc6 40. h4 Qxc2 41. Ng5+ Kh6 42. Rd7 fxg5 43. Qxe5 Qc1+ 44. Kh2 gxh4 45. Qg7+ Kg5 46. Qe5+ Kh6 1/2-1/2

[Event "COL-ch"]
[Site "Cartagena"]
[Date "2023.06.09"]
[Round "3"]
[White "Caballero Marrugo, Maria Jose"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1542"]
[BlackElo "1978"]
[PlyCount "80"]
[EventDate "2023.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 d6 6. d3 e5 7. Nc3 Nge7 8. Re1 0-0 9. Bg5 h6 10. Be3 Nd4 11. Ne2 Bg4 12. Bxd4 cxd4 13. c3 dxc3 14. Nxc3 Qd7 15. Qb3 Nc6 16. Qa4 b5 17. Qxb5 Rab8 18. Qa4 Rxb2 19. Nd5 Kh7 20. Rec1 Rc8 21. Ne3 Bxf3 22. Bxf3 Rb4 23. Qc2 Ne7 24. Qd2 Rcb8 25. Qc3 R8b7 26. a3 Rb3 27. Qc4 Ng8 28. Bg4 Qd8 29. Bc8 Rb8 30. Bg4 Nf6 31. Qxf7 Rxd3 32. Rc7 Qf8 33. Rxa7 Nxe4 34. h4 Nxg3 35. h5 Qxf7 36. Rxf7 Nxh5 37. Nf5 Kg8 38. Rd7 gxf5 39. Bxh5 e4 40. Bg6 Bxa1 0-1

[Event "COL-ch"]
[Site "Cartagena"]
[Date "2023.06.08"]
[Round "2"]
[White "Acuna, Nelson David"]
[Black "Claro Molinares, Samuel David"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1978"]
[BlackElo "1634"]
[PlyCount "102"]
[EventDate "2023.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. 0-0 Nxd4 9. Nc3 a6 10. Kh1 Nxf3 11. Qxf3 Ne7 12. Qg3 Nc6 13. a3 g6 14. b4 Bg7 15. f4 Ne7 16. Bb2 0-0 17. Rae1 Rad8 18. Qg5 Rfe8 19. Rf3 Bc6 20. Ne2 d4 21. Rh3 Nf5 22. Bxf5 exf5 23. Qh4 h6 24. Rd3 Bb5 25. Rxd4 Bxe2 26. Rxd8 Qxd8 27. Qf2 Bb5 28. h3 Qd5 29. Qc2 Qd3 30. Qc1 Rd8 31. e6 fxe6 32. Bxg7 Kxg7 33. Qc7+ Qd7 34. Qb6 Bc6 35. Rxe6 Qxe6 36. Qxd8 Qd5 37. Qe7+ Kg8 38. Qe2 Kf7 39. Kh2 Qe4 40. Qd2 Ke6 41. g4 Bb5 42. Qc1 Bc6 43. Qd2 h5 44. gxh5 gxh5 45. Kg3 Qg2+ 46. Qxg2 h4+ 47. Kf2 Bxg2 48. Kxg2 Kd5 49. Kf3 Kd4 50. a4 Kd3 51. a5 Kd4 0-1

[Event "COL-ch"]
[Site "Cartagena"]
[Date "2023.06.08"]
[Round "1"]
[White "Turizo Florez, Joseph"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1107"]
[BlackElo "1978"]
[PlyCount "60"]
[EventDate "2023.06.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Nc3 Bg7 5. d3 Nd4 6. Bc4 e6 7. Be3 Ne7 8. Qd2 0-0 9. Bg5 a6 10. a3 Qe8 11. Ne2 d5 12. Ba2 dxe4 13. dxe4 Nxf3+ 14. gxf3 Nc6 15. 0-0-0 e5 16. Bh6 Be6 17. Rhg1 Bxa2 18. b3 Nd4 19. Nxd4 cxd4 20. Kb2 Bxb3 21. cxb3 Rc8 22. Rc1 Qb5 23. a4 Bxh6 24. Qxh6 Qe2+ 25. Ka3 Qxf3 26. Qh4 Rc3 27. Rxc3 Qxc3 28. Rd1 b5 29. Qf6 b4+ 30. Ka2 Qc2+ 0-1

[Event "COL-chT"]
[Site "Medellin"]
[Date "2021.12.11"]
[Round "6.3"]
[White "Caro Estrada, Esveny"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1569"]
[BlackElo "1982"]
[PlyCount "66"]
[EventDate "2021.12.09"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]
[WhiteTeam "Antioquia Polijic"]
[BlackTeam "Liga Atlantico Abs"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. g3 Nc6 3. Bg2 g6 4. d3 Bg7 5. c3 d6 6. Be3 Rb8 7. a4 a6 8. Qd2 Na5 9. Qc2 Be6 10. Nd2 Nf6 11. h3 b5 12. axb5 axb5 13. Ne2 0-0 14. 0-0 b4 15. Qa4 bxc3 16. bxc3 Nb3 17. Nxb3 Bxb3 18. Qa7 Bc2 19. e5 dxe5 20. Bxc5 Qxd3 21. Rfe1 Nd5 22. Bxd5 Qxd5 23. Bxe7 Rb7 24. Qc5 Qf3 25. Nc1 Re8 26. Bg5 Be4 27. Kf1 Qg2+ 28. Ke2 Rb2+ 29. Kd1 Bf3+ 30. Ne2 Rxe2 31. Rxe2 Qf1+ 32. Kc2 Qxe2+ 33. Bd2 Be4+ 0-1

[Event "COL-chT"]
[Site "Medellin"]
[Date "2021.12.11"]
[Round "5.3"]
[White "Soto, Miguel Angel"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "E38"]
[WhiteElo "2371"]
[BlackElo "1982"]
[PlyCount "103"]
[EventDate "2021.12.09"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]
[WhiteTeam "Liga de Antioquia"]
[BlackTeam "Liga Atlantico Abs"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Bxc5 6. g3 d5 7. cxd5 Nxd5 8. Bg2 Nxc3 9. Qxc3 Na6 10. a3 0-0 11. Nf3 Qb6 12. 0-0 Bd7 13. b4 Be7 14. Be3 Qc6 15. Qb3 Bf6 16. Nd4 Qb6 17. Rad1 Qc7 18. Rc1 Qb8 19. b5 Nc7 20. Rfd1 Rd8 21. a4 e5 22. Qc2 exd4 23. Bf4 Re8 24. Bxc7 Qc8 25. Qd2 Bg4 26. Be5 Qe6 27. Bxf6 Qxf6 28. Qxd4 Bxe2 29. Qxf6 gxf6 30. Rd7 Rac8 31. Rxc8 Rxc8 32. Bxb7 Rc4 33. Bd5 Rxa4 34. Rxf7 Kh8 35. Bc6 Rb4 36. Rxf6 Bxb5 37. Bxb5 Rxb5 38. Ra6 Rb7 39. Kg2 Kg7 40. g4 Kf8 41. Kg3 Ke8 42. g5 Kf7 43. f4 Kg8 44. h4 Kf8 45. Kg4 Kg7 46. f5 Kf7 47. Kh5 Kg7 48. f6+ Kg8 49. Kh6 Rb4 50. h5 Rb7 51. g6 Kh8 52. Rc6 1-0

[Event "COL-chT"]
[Site "Medellin"]
[Date "2021.12.10"]
[Round "3.3"]
[White "Acuna, Nelson David"]
[Black "Lopez Ramirez, Daniel Giovanny"]
[Result "1/2-1/2"]
[ECO "B04"]
[WhiteElo "1982"]
[BlackElo "1855"]
[PlyCount "97"]
[EventDate "2021.12.09"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]
[WhiteTeam "Liga Atlantico Abs"]
[BlackTeam "Cundinamarca"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. c4 Nb6 6. Nc3 Bg7 7. Bf4 0-0 8. exd6 cxd6 9. Be2 Nc6 10. h3 e5 11. Be3 f5 12. c5 dxc5 13. dxe5 Qxd1+ 14. Rxd1 Nxe5 15. Bxc5 Re8 16. 0-0 Nec4 17. Bxb6 Nxb6 18. Rfe1 Bd7 19. Nd4 a6 20. Kf1 Rad8 21. Bf3 Rxe1+ 22. Kxe1 Bc8 23. Nb3 Rxd1+ 24. Kxd1 Kf8 25. Na5 Bd4 26. Ke1 Ke7 27. Nxb7 Nc4 28. Nd5+ Kd7 29. b3 Ne5 30. Na5 Nxf3+ 31. gxf3 Kd6 32. Ne3 Bc3+ 33. Ke2 Bxa5 34. Nc4+ Kc5 35. Nxa5 Kb4 36. Nc4 a5 37. Kd2 a4 38. Kc2 axb3+ 39. axb3 f4 40. Nb2 Bxh3 41. Nd3+ Kb5 42. Nxf4 Bf5+ 43. Kc3 h5 44. b4 h4 45. Ne2 h3 46. Ng3 Be6 47. Nf1 Bd5 48. f4 Bb7 49. Nh2 1/2-1/2

[Event "COL-chT"]
[Site "Medellin"]
[Date "2021.12.10"]
[Round "4.3"]
[White "Acuna, Nelson David"]
[Black "Moreno Marino, Juan Nicolas"]
[Result "1-0"]
[ECO "B46"]
[WhiteElo "1982"]
[BlackElo "1971"]
[PlyCount "141"]
[EventDate "2021.12.09"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]
[WhiteTeam "Liga Atlantico Abs"]
[BlackTeam "Boyaca II"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 a6 7. Be3 Be7 8. Be2 0-0 9. 0-0 e5 10. Nf5 d6 11. Nxe7+ Qxe7 12. Bg5 Be6 13. f4 d5 14. Bxf6 gxf6 15. exd5 Rfd8 16. Bd3 Bxd5 17. Qg4+ Kh8 18. Nxd5 Qc5+ 19. Kh1 Qxd5 20. Qf5 e4 21. Qxe4 Qxe4 22. Bxe4 Rd4 23. Bd3 Rad8 24. Rae1 b5 25. Re3 h6 26. Rh3 Kg7 27. Rff3 Rh8 28. Rh5 Na5 29. Rc5 Rhd8 30. h3 Nc4 31. Rg3+ Kf8 32. Bxc4 bxc4 33. Rc3 Rxf4 34. R5xc4 Rf1+ 35. Kh2 Kg7 36. Rg3+ Kf8 37. Rf3 Rb1 38. Rxf6 Rxb2 39. Rxh6 Rd2 40. Rhc6 a5 41. Rc8+ Kg7 42. Rg4+ Kf6 43. Rf4+ Kg7 44. Rc7 Rbxc2 45. Rfxf7+ Kg6 46. Rg7+ Kh6 47. Rh7+ Kg6 48. Rcg7+ Kf6 49. Rg4 Ra2 50. a4 Rdb2 51. Rh6+ Kf7 52. Rh5 Rb4 53. Rxa5 Rxg4 54. hxg4 Ra3 55. Ra6 Kg7 56. g5 Kf7 57. g3 Ra1 58. a5 Ra2+ 59. Kh3 Ra4 60. g6+ Kg7 61. g4 Ra3+ 62. Kh4 Kh6 63. g7+ Kxg7 64. Kg5 Rc3 65. Ra7+ Kg8 66. Kh5 Rc5+ 67. g5 Rc6 68. a6 Rc1 69. Kh6 Rc6+ 70. g6 Rc8 71. Rb7 1-0

[Event "COL-chT"]
[Site "Medellin"]
[Date "2021.12.09"]
[Round "1.3"]
[White "Acuna, Nelson David"]
[Black "Lopez Rayo, Santiago"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1982"]
[BlackElo "2139"]
[PlyCount "48"]
[EventDate "2021.12.09"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]
[WhiteTeam "Liga Atlantico Abs"]
[BlackTeam "Liga del Valle II"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 d5 10. Nxc6 bxc6 11. Bc4 e6 12. Bb3 Bb7 13. Na4 Qc7 14. Nc5 Rfd8 15. Nxb7 Qxb7 16. Bg5 Rdc8 17. exd5 cxd5 18. Qa5 Nd7 19. Be3 Ne5 20. Bd4 Nc6 21. Qa4 Nxd4 22. Rxd4 Bxd4 23. Qxd4 a5 24. Kb1 a4 0-1

[Event "COL-chT"]
[Site "Medellin"]
[Date "2021.12.09"]
[Round "2.3"]
[White "Valera Padilla, Federico Jose"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "1842"]
[BlackElo "1982"]
[PlyCount "71"]
[EventDate "2021.12.09"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico Quintal"]
[BlackTeam "Liga Atlantico Abs"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. f3 d5 10. Bxd5 Nxd5 11. exd5 Nb4 12. Nde2 e6 13. d6 Ra6 14. d7 Qxd7 15. Qxd7 Bxd7 16. 0-0-0 Bc6 17. Kb1 h5 18. Bd4 Bh6 19. a3 Nd5 20. Nxd5 exd5 21. Rhe1 b5 22. b3 Rc8 23. Bb2 b4 24. a4 Bf8 25. Nd4 Bd7 26. Re5 Rc5 27. Nb5 Be6 28. Nd4 Bg7 29. Nxe6 fxe6 30. Re2 Bxb2 31. Kxb2 Rac6 32. Rdd2 Kf7 33. Re5 Kf6 34. f4 Rc3 35. Rde2 h4 36. Kb1 1/2-1/2

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.28"]
[Round "9"]
[White "Saladen Dulce, Rafael"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "D40"]
[WhiteElo "2173"]
[BlackElo "1994"]
[PlyCount "65"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. e3 Nf6 4. d4 cxd4 5. exd4 d5 6. Nc3 e6 7. Bg5 Be7 8. Bd3 0-0 9. 0-0 dxc4 10. Bxc4 b6 11. a3 Bb7 12. Ba2 Nd5 13. Bxe7 Ncxe7 14. Ne5 Nf4 15. f3 Nf5 16. Re1 Qxd4+ 17. Qxd4 Nxd4 18. Red1 Rfd8 19. Kf2 Nc6 20. Nc4 Ba6 21. b4 Nd3+ 22. Kg1 Bxc4 23. Bxc4 Nb2 24. Rxd8+ Rxd8 25. Ba6 g6 26. Rb1 Rd2 27. Nb5 Nb8 28. Bb7 a5 29. Nc3 Nd7 30. f4 Nf6 31. Bf3 axb4 32. axb4 Nd5 33. Bxd5 1/2-1/2

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.27"]
[Round "8"]
[White "Acuna, Nelson David"]
[Black "Vargas Viscaino, Jesus Daniel"]
[Result "1-0"]
[ECO "D01"]
[WhiteElo "1994"]
[BlackElo "1856"]
[PlyCount "71"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Nbd7 4. Nf3 h6 5. Bh4 e6 6. a3 c5 7. e3 a6 8. Bd3 c4 9. Be2 b5 10. 0-0 Be7 11. Ne5 Bb7 12. f4 Nxe5 13. fxe5 Nd7 14. Bg3 0-0 15. Bh5 f5 16. Bg6 Bc6 17. Qh5 Nb6 18. Ne2 Be8 19. Nf4 Qd7 20. h4 Na4 21. Ra2 a5 22. Be1 Bf7 23. Bxf7+ Rxf7 24. Qg6 Ra6 25. b3 Nb6 26. Qxe6 Qxe6 27. Nxe6 Ra7 28. h5 cxb3 29. cxb3 a4 30. bxa4 Rxa4 31. Rb2 Nc4 32. Rxb5 Ra8 33. Bf2 Rxa3 34. Rxd5 Nxe3 35. Bxe3 Rxe3 36. Nf4 1-0

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.26"]
[Round "6"]
[White "Acuna, Nelson David"]
[Black "Mena Mayo, Jairo"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1994"]
[BlackElo "1822"]
[PlyCount "81"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d6 3. e4 Bg4 4. f3 Bh5 5. Bg5 Nbd7 6. Qd2 h6 7. Bh4 c6 8. 0-0-0 g5 9. Bg3 Qa5 10. Kb1 0-0-0 11. Nge2 Bg7 12. Nc1 c5 13. Nd5 Qxd2 14. Nxe7+ Kc7 15. Rxd2 Rhe8 16. Nf5 Bf8 17. Nb3 Bg6 18. dxc5 Bxf5 19. cxd6+ Kb8 20. exf5 Nh5 21. Bf2 a6 22. Bc4 Ne5 23. Be2 Rxd6 24. Rhd1 Rxd2 25. Rxd2 Nf4 26. g3 Nh3 27. Bd4 Nc6 28. Bb6 f6 29. a3 h5 30. Ka2 g4 31. fxg4 Bh6 32. g5 Bxg5 33. Bxh5 Rh8 34. Re2 Ne5 35. Bg6 Nd7 36. Bd4 Kc7 37. Nc5 Nxc5 38. Bxc5 Rd8 39. b4 Rd1 40. Re7+ Kc6 41. Be8+ 1-0

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.26"]
[Round "7"]
[White "Lopez Ramirez, Daniel Giovanny"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "1790"]
[BlackElo "1994"]
[PlyCount "106"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. h3 0-0 8. Bg5 d6 9. a3 Nd7 10. Bxe7 Nxe7 11. Nc3 Nc5 12. Ba2 Be6 13. Bxe6 Nxe6 14. d4 exd4 15. Nxd4 Ng6 16. Nf5 Nc5 17. 0-0 Qg5 18. Qg4 Qxg4 19. hxg4 Rfe8 20. f3 Nf4 21. g3 Nfe6 22. Nd5 g6 23. Nf6+ Kh8 24. Nxe8 Rxe8 25. Ne3 Kg7 26. Kf2 Ng5 27. Rad1 h6 28. Nd5 Rc8 29. Rfe1 f6 30. b4 Nd7 31. c4 bxc4 32. Rd4 Ne5 33. f4 Ne6 34. fxe5 Nxd4 35. exf6+ Kf7 36. Rc1 c6 37. Rxc4 Nb5 38. a4 Na7 39. Ne7 Re8 40. Nxc6 Nxc6 41. Rxc6 Rxe4 42. Rxd6 a5 43. bxa5 Rxa4 44. a6 Rxg4 45. Kf3 Ra4 46. Ke3 h5 47. Kd3 g5 48. Kc3 h4 49. Kb3 Ra1 50. gxh4 gxh4 51. Kb4 h3 52. Rd7+ Kxf6 53. Rh7 Kg6 1/2-1/2

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.25"]
[Round "4"]
[White "Acuna, Nelson David"]
[Black "Guarin Fonseca, Nobel Alfredo"]
[Result "1-0"]
[ECO "C13"]
[WhiteElo "1994"]
[BlackElo "1812"]
[PlyCount "95"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 e6 4. e4 dxe4 5. Bxf6 Qxf6 6. Nxe4 Qf5 7. Bd3 Qa5+ 8. c3 Be7 9. Nf3 Nd7 10. 0-0 h6 11. Re1 c6 12. a4 Qc7 13. Qe2 a5 14. Rad1 0-0 15. Bb1 c5 16. dxc5 Nxc5 17. Nxc5 Bxc5 18. Ne5 f5 19. Ba2 Kh7 20. Qh5 Rf6 21. Qe8 Bd6 22. Nf3 Ra6 23. Qh5 Rg6 24. h4 Bf4 25. Rd4 Bd7 26. Rc4 Qb8 27. Rxf4 Qxf4 28. Ne5 Be8 29. Nxg6 Bxg6 30. Qe2 Qxa4 31. Bxe6 Qxh4 32. Qf3 Qf6 33. Qd5 Ra8 34. Qxb7 Re8 35. Qd7 Rd8 36. Qb5 Re8 37. Qe5 Qd8 38. Re3 Qb6 39. c4 f4 40. c5 Qc6 41. Re2 Kh8 42. Qd6 Qb5 43. Rd2 Qb4 44. Bh3 Re1+ 45. Kh2 f3 46. Qf8+ Kh7 47. Rd8 Bb1 48. Bf5+ 1-0

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.25"]
[Round "5"]
[White "Gonzalez Velasco, Leandro"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1859"]
[BlackElo "1994"]
[PlyCount "93"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Nxc6 bxc6 8. e5 Nd5 9. Nxd5 cxd5 10. Qxd5 Rb8 11. Bc4 0-0 12. 0-0-0 Qc7 13. Bb3 Bxe5 14. Qc5 a5 15. Rd5 Qb7 16. Qxe7 Bg7 17. Rxa5 Qxg2 18. Re1 d5 19. Bc5 Be6 20. Qh4 Rfe8 21. Qg3 Bh6+ 22. Be3 Qe4 23. Rd1 Bg7 24. Qf4 Qg2 25. Qg3 Qe4 26. Qf4 Qg2 27. Ra4 Qh3 28. Kb1 Qh5 29. Rg1 Qe2 30. Bd4 Bd7 31. Ra7 Be6 32. Bxg7 Kxg7 33. Qd4+ Kg8 34. Rc7 Qh5 35. h4 Qf5 36. Rg5 Qf3 37. a3 Qh1+ 38. Ka2 Qc1 39. Re5 Rxb3 40. Kxb3 Rb8+ 41. Ka2 Bf5 42. Rxf5 gxf5 43. Qf6 Rf8 44. Qxf5 Qd1 45. Qg5+ Kh8 46. Qf6+ Kg8 47. Rc3 1-0

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.24"]
[Round "2"]
[White "Acuna, Nelson David"]
[Black "Valera Padilla, Federico Jose"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "1994"]
[BlackElo "1827"]
[PlyCount "97"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 e6 3. e4 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. Bd3 Be7 8. Bg5 b6 9. Qd2 Bb7 10. 0-0-0 0-0 11. Kb1 Ne4 12. Bxe4 Bxe4 13. Bxe7 Qxe7 14. Qf4 Bxf3 15. Qxf3 Rfd8 16. h4 Rac8 17. Qe4 Qd6 18. c4 a5 19. Rh3 f5 20. Qe2 e5 21. Rhd3 e4 22. R3d2 Re8 23. g3 Re7 24. Qe3 Rce8 25. a3 Rf8 26. Qb3 Kh8 27. h5 Qh6 28. c5 e3 29. Re2 Rfe8 30. cxb6 cxb6 31. fxe3 Qxh5 32. Rde1 Qg6 33. Ka1 Rd7 34. d5 Red8 35. Rc1 Rd6 36. Rd2 h6 37. Rf1 Re8 38. Qc2 Qxg3 39. Rxf5 Qxe3 40. Ka2 Qc5 41. Qd3 Rc8 42. Rf4 Rcd8 43. Rf5 Rc8 44. b3 a4 45. Rdf2 axb3+ 46. Kxb3 Kg8 47. a4 b5 48. axb5 Rb6 49. d6 1/2-1/2

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.24"]
[Round "3"]
[White "Piraquive, Alberto"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1722"]
[BlackElo "1994"]
[PlyCount "124"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 c5 3. f4 e6 4. Nf3 b6 5. Bd3 Bb7 6. Nbd2 d6 7. c3 Be7 8. 0-0 0-0 9. Qc2 Nbd7 10. Ne4 Rc8 11. Nxf6+ Nxf6 12. e4 d5 13. e5 Ne4 14. Qe2 cxd4 15. Nxd4 Bc5 16. Be3 Qe7 17. Rf3 f5 18. Raf1 a5 19. a4 Bxd4 20. Bxd4 Nc5 21. Bb5 Bc6 22. Rb1 Qd7 23. b4 Nxa4 24. Bxa4 Bxa4 25. Bxb6 Bb5 26. Qe3 a4 27. Ra1 Rc4 28. Bd4 Ra8 29. Ra3 Rac8 30. h3 R4c6 31. g4 Qf7 32. Kh2 Rc4 33. Rg3 Rf8 34. Rf3 Qg6 35. g5 Ra8 36. Rf2 Qh5 37. Qf3 Qf7 38. Rd2 Qe7 39. Kg3 Rc6 40. Rb2 Bc4 41. Bc5 Qd7 42. Rb1 Rcc8 43. h4 Qb5 44. Qe3 Bb3 45. h5 Ra6 46. Bd4 Rac6 47. h6 R8c7 48. hxg7 Rxg7 49. Rh1 Bc2 50. Raa1 Be4 51. Rh6 Rg6 52. Rh2 Rc4 53. Qe2 Qc6 54. Kf2 Rg7 55. Qd1 Bc2 56. Qxc2 Rxd4 57. Rxa4 Rxf4+ 58. Ke1 Rxg5 59. Rg2 Rxg2 60. Qxg2+ Rg4 61. Qa2 Qxc3+ 62. Kf1 Qf3+ 0-1

[Event "COL Subzt 2.3.4"]
[Site "Risarald"]
[Date "2021.11.23"]
[Round "1"]
[White "Castro Castro, Joaquin"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1607"]
[BlackElo "1994"]
[PlyCount "123"]
[EventDate "2021.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 Bg7 7. Be3 0-0 8. Be2 d6 9. f3 Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. 0-0 Nd7 13. Be3 a5 14. b3 Nc5 15. Rac1 e6 16. Rfd1 Be5 17. g3 Qe7 18. Bf1 f5 19. Nb5 Bxb5 20. cxb5 b6 21. Bg2 Rad8 22. f4 Bf6 23. exf5 gxf5 24. Qf2 Qg7 25. Rc2 Be7 26. Bc6 d5 27. Bd4 Qg6 28. Qe3 h5 29. a3 h4 30. b4 axb4 31. axb4 Ne4 32. Bxb6 hxg3 33. hxg3 Bxb4 34. Rd3 Rc8 35. Rb2 Bd6 36. Bd4 Kf7 37. Rg2 Rh8 38. Bxh8 Rxh8 39. Qa7+ Be7 40. Kf1 Rh1+ 41. Rg1 Rh2 42. Rg2 Qh5 43. Rxh2 Qxh2 44. Qg1 Qc2 45. Qe3 Bc5 46. Qe2 Qc1+ 47. Qd1 Qc4 48. Qh5+ Kg7 49. Qe2 Bf2 50. Kg2 Bb6 51. Qb2+ Kf7 52. Rf3 Qc5 53. Qb1 Qd4 54. Qc1 Nd2 55. Qh1 Nxf3 56. Qh5+ Kg7 57. Qxf3 Qd2+ 58. Kh3 Bg1 59. Qg2 Qd1 60. g4 Qxg4+ 61. Qxg4+ fxg4+ 62. Kxg4 1/2-1/2

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.08"]
[Round "8"]
[White "Acuna, Nelson David"]
[Black "Castro Castro, Joaquin"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "2034"]
[BlackElo "1493"]
[PlyCount "68"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. 0-0-0 d5 10. Qe1 e5 11. exd5 Nxd4 12. h4 h5 13. Bg5 Qd6 14. Qg3 Nf5 15. Qh2 Bd7 16. Be2 Nh6 17. g4 hxg4 18. h5 Nxh5 19. Kb1 g3 20. Qg1 Nf5 21. Bd3 Qb6 22. Qe1 Qf2 23. Qe4 g2 24. Rhg1 Qg3 25. Bd2 Nf4 26. Ne2 Nxe2 27. Qxe2 Nd4 28. Qxg2 Qxg2 29. Rxg2 Nxf3 30. Bb4 Rfe8 31. Be4 Nd4 32. c3 Bf5 33. Bxf5 Nxf5 34. d6 Ne3 0-1

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.08"]
[Round "9"]
[White "Garces Trujillo, Luis Javier"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "D43"]
[WhiteElo "1898"]
[BlackElo "2034"]
[PlyCount "62"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c6 5. Qc2 Bb4 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 0-0 9. Bf4 Nd7 10. e3 f5 11. Bd3 g5 12. Bxe4 gxf4 13. Bd3 fxe3 14. fxe3 Nf6 15. 0-0 Bd7 16. Ne5 Be8 17. Rf3 Qe7 18. Raf1 Bg6 19. Rg3 Kg7 20. Rxf5 exf5 21. Bxf5 Nh5 22. Nxg6 hxg6 23. Rxg6+ Kf7 24. Qf2 Ke8 25. g4 Ng7 26. cxd5 cxd5 27. Qe2 Nxf5 28. gxf5 Kd8 29. Qf3 Qe4 30. Rd6+ Ke7 31. Qg3 Qxf5 0-1

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.07"]
[Round "6"]
[White "Acuna, Nelson David"]
[Black "Mora Munoz, Alejandro"]
[Result "1-0"]
[ECO "B97"]
[WhiteElo "2034"]
[BlackElo "1761"]
[PlyCount "67"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Rb1 Qa3 10. Bxf6 gxf6 11. Be2 Qc5 12. Na4 Qc7 13. Nb6 Ra7 14. f5 e5 15. Nd5 Qd8 16. Ne6 Bxe6 17. fxe6 fxe6 18. Bh5+ Kd7 19. Qf2 Qa5+ 20. Ke2 Nc6 21. Qxf6 Nd4+ 22. Kd3 exd5 23. Qxh8 dxe4+ 24. Kxe4 Qd2 25. Qxf8 d5+ 26. Kxe5 Nc6+ 27. Kf5 Ne7+ 28. Kg4 Qxg2+ 29. Kh4 Qe4+ 30. Bg4+ Kc7 31. Qf7 Kd8 32. Rhe1 Ng6+ 33. Kg3 Qa4 34. Qg8+ 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.07"]
[Round "7"]
[White "Cordoba Roa, Angel Gabriel"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "1966"]
[BlackElo "2034"]
[PlyCount "55"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. 0-0 Bg7 6. c3 Nf6 7. Re1 0-0 8. d4 cxd4 9. cxd4 d6 10. Nc3 Qa5 11. Bd2 Qh5 12. e5 Nd5 13. Nxd5 cxd5 14. exd6 exd6 15. Bf4 Rd8 16. h3 h6 17. Rc1 g5 18. Bd2 g4 19. Nh2 Qg6 20. hxg4 Bxd4 21. Ba5 Bb6 22. Bxb6 axb6 23. a3 Qg5 24. Rc7 Be6 25. Rxe6 fxe6 26. Qc2 Qf6 27. Qh7+ Kf8 28. g5 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.06"]
[Round "4"]
[White "Acuna, Nelson David"]
[Black "Munoz, Julian Andres"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "2034"]
[BlackElo "2154"]
[PlyCount "73"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Ne4 4. Nxe4 dxe4 5. Qd2 h6 6. Bf4 g5 7. Be5 f6 8. Bg3 Bg7 9. 0-0-0 c6 10. f3 Be6 11. Kb1 exf3 12. gxf3 Nd7 13. e4 0-0 14. c4 Bf7 15. h4 Qb6 16. c5 Qd8 17. Nh3 b6 18. hxg5 fxg5 19. Nxg5 hxg5 20. Qxg5 e5 21. Qg4 Nf6 22. Qh3 Re8 23. Be2 bxc5 24. dxe5 Qa5 25. b3 Qa3 26. Rd3 Nh5 27. f4 Rab8 28. Bxh5 Bxb3 29. axb3 Rxb3+ 30. Rxb3 Qxb3+ 31. Kc1 Qc3+ 32. Kd1 Rd8+ 33. Ke2 Rd2+ 34. Kf1 Qd3+ 35. Kg1 Qe3+ 36. Kf1 Qd3+ 37. Kg1 1/2-1/2

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.06"]
[Round "5"]
[White "Martinez, Julian"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "E17"]
[WhiteElo "2124"]
[BlackElo "2034"]
[PlyCount "101"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. 0-0 Be7 6. b3 0-0 7. Bb2 d6 8. Nbd2 c5 9. c4 Nbd7 10. Re1 cxd4 11. Bxd4 Rc8 12. Bb2 Rc7 13. Rc1 Qa8 14. Nh4 Rd8 15. Bxb7 Qxb7 16. Nhf3 Nf8 17. e3 Ng6 18. Nd4 Rcd7 19. Qf3 Qa6 20. a4 Ne5 21. Qe2 Qb7 22. f4 Nc6 23. Qf3 Nb4 24. e4 d5 25. exd5 Bc5 26. Kg2 exd5 27. Nf5 d4 28. Ne4 Nxe4 29. Rxe4 g6 30. Nh4 Nd3 31. Rc2 f5 32. Ree2 Nxb2 33. Rxb2 d3 34. Red2 Bb4 35. Rxd3 Qc7 36. Rxd7 Qxd7 37. Re2 Kf7 38. Qe3 Bc5 39. Qc3 Qd1 40. Qe5 Qg1+ 41. Kh3 Qf1+ 42. Ng2 Qf3 43. Qc7+ Kf6 44. Qxd8+ Kg7 45. Re7+ Bxe7 46. Qxe7+ Kg8 47. Qg5 Qxb3 48. Qd8+ Kg7 49. Qe7+ Kg8 50. Ne3 Qd3 51. Nd5 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.05"]
[Round "2"]
[White "Acuna, Nelson David"]
[Black "Finley Rosero, Karol Valentina"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "2034"]
[BlackElo "1630"]
[PlyCount "53"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 Bg7 7. Be3 0-0 8. Qd2 Nc6 9. 0-0-0 Nxd4 10. Bxd4 Be6 11. Kb1 Qc7 12. g4 Rfc8 13. h4 Qa5 14. a3 h5 15. Be2 Bc4 16. g5 Ne8 17. Bxg7 Nxg7 18. f4 Ne6 19. f5 Bxe2 20. Qxe2 Nd8 21. Nd5 Nc6 22. Rhf1 Kg7 23. f6+ exf6 24. gxf6+ Kh7 25. Rf5 Rh8 26. Rxh5+ Kg8 27. Ne7+ 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.05"]
[Round "3"]
[White "Castano Herrera, Saray"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B39"]
[WhiteElo "1658"]
[BlackElo "2034"]
[PlyCount "92"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Be2 Qa5 11. Rc1 b6 12. Qd5 Qxd5 13. cxd5 Nc5 14. f3 0-0 15. 0-0 Ba6 16. Bxc5 Bxe2 17. Nxe2 bxc5 18. b3 d6 19. Rfd1 a5 20. Rc4 Rfb8 21. Rdc1 Bh6 22. f4 Rb4 23. Rxb4 axb4 24. Rc2 e6 25. Kf2 Kf8 26. Kf3 Ke7 27. Nc1 exd5 28. exd5 f5 29. g3 Bg7 30. Re2+ Kd7 31. Nd3 Ra3 32. Rc2 Bc3 33. Nf2 h5 34. Nd1 Bd4 35. h4 Ra8 36. Ne3 Bxe3 37. Kxe3 Re8+ 38. Kd2 Re4 39. Rc4 Re8 40. Rc1 Kc7 41. Re1 Rxe1 42. Kxe1 Kb6 43. Kd2 Kb5 44. Kd3 c4+ 45. bxc4+ Kc5 46. Kc2 Kxc4 0-1

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.04"]
[Round "1"]
[White "Ospina Betancur, Santiago"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1280"]
[BlackElo "2034"]
[PlyCount "67"]
[EventDate "2021.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 g6 4. d3 Bg7 5. f4 Nd4 6. Bc4 a6 7. a4 Rb8 8. Nf3 e6 9. Nxd4 cxd4 10. Ne2 Ne7 11. 0-0 0-0 12. Qe1 d5 13. exd5 Nxd5 14. Qf2 b5 15. axb5 axb5 16. Bb3 Ne7 17. Bd2 Nf5 18. Ng3 Bb7 19. Ra7 Ne3 20. Rfa1 Ng4 21. Qe2 Nxh2 22. Be1 Qh4 23. Ne4 Qxf4 24. Bg3 Qg4 25. Qxg4 Nxg4 26. Bxb8 Rxb8 27. Nd6 Bc6 28. Nxf7 Ne3 29. Bxe6 Bxg2 30. Ng5+ Kh8 31. Rd7 Rf8 32. Nf7+ Kg8 33. Raa7 h5 34. Ng5+ 1-0

[Event "Barranquilla Region-ch"]
[Site "Barranquilla"]
[Date "2020.01.06"]
[Round "5"]
[White "Acuna, Nelson David"]
[Black "Sanchez Cabarcas, Samuel Alejandro"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2034"]
[BlackElo "1573"]
[PlyCount "89"]
[EventDate "2020.01.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 0-0 6. 0-0 d6 7. h3 Nd7 8. Nbd2 Nb6 9. Bb3 Kh8 10. d4 f5 11. Re1 f4 12. Nc4 Bf6 13. a4 Nxc4 14. Bxc4 a5 15. b3 Bd7 16. Ba3 Qe8 17. Rc1 Qg6 18. Kh2 Rfd8 19. Rc2 Qh6 20. Rd2 Rab8 21. Bd5 g5 22. Bxc6 Bxc6 23. dxe5 dxe5 24. Ng1 Qg6 25. f3 Rxd2 26. Qxd2 Rd8 27. Qc2 h5 28. Rd1 Rxd1 29. Qxd1 g4 30. b4 gxf3 31. gxf3 Qg8 32. Qc2 Qg3+ 33. Kh1 Be7 34. Qd1 b6 35. bxa5 Bxa3 36. Qd8+ Qg8 37. Qf6+ Qg7 38. Qxc6 bxa5 39. Qe8+ Kh7 40. Qxh5+ Kg8 41. Qg4 Qxg4 42. fxg4 Be7 43. Nf3 Kg7 44. Kg2 Kg6 45. h4 1-0

[Event "Barranquilla Region-ch"]
[Site "Barranquilla"]
[Date "2020.01.06"]
[Round "6"]
[White "Gonzalez Parejo, Ramon Junior"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "A38"]
[WhiteElo "2244"]
[BlackElo "2034"]
[PlyCount "31"]
[EventDate "2020.01.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. d3 d6 8. Rb1 e5 9. a3 a5 10. Bg5 h6 11. Bxf6 Qxf6 12. Nd2 Be6 13. Nd5 Qd8 14. Ne4 f5 15. Nec3 Kh7 16. Qd2 1/2-1/2

[Event "Barranquilla Region-ch"]
[Site "Barranquilla"]
[Date "2020.01.05"]
[Round "3"]
[White "Acuna, Nelson David"]
[Black "Jaramillo, Martin"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2034"]
[BlackElo "1709"]
[PlyCount "63"]
[EventDate "2020.01.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. d4 d6 4. h3 Nf6 5. Bd3 0-0 6. 0-0 Nc6 7. Be3 e5 8. Nc3 Re8 9. dxe5 Nxe5 10. Nxe5 dxe5 11. Qe2 c6 12. a4 Nh5 13. Qf3 Qf6 14. Qxf6 Bxf6 15. Rfd1 Nf4 16. Bc4 Kg7 17. a5 Be7 18. Na4 Ne6 19. c3 f5 20. exf5 gxf5 21. f3 Bg5 22. Bxg5 Nxg5 23. Nc5 Kf6 24. Rd6+ Kg7 25. Nxb7 Rb8 26. a6 Nf7 27. Rxc6 Re7 28. Bxf7 Bxb7 29. axb7 Rxf7 30. Rxa7 Rbxb7 31. Rxb7 Rxb7 32. b4 1-0

[Event "Barranquilla Region-ch"]
[Site "Barranquilla"]
[Date "2020.01.05"]
[Round "4"]
[White "Martinez Cuspoca, Hillel"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B21"]
[BlackElo "2034"]
[PlyCount "116"]
[EventDate "2020.01.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 g6 4. d4 cxd4 5. c3 dxc3 6. Nxc3 Bg7 7. e5 Nxe5 8. Nxe5 Bxe5 9. Bxf7+ Kxf7 10. Qd5+ Kg7 11. Qxe5+ Nf6 12. 0-0 d6 13. Qe3 Rf8 14. Re1 e5 15. Qh6+ Kg8 16. Bg5 Qe8 17. Qh4 Nh5 18. Nd5 Qf7 19. Red1 Be6 20. Nc3 d5 21. Rac1 a6 22. Ne2 Rac8 23. Rxc8 Bxc8 24. Be7 Re8 25. Bd6 Qe6 26. Qb4 Bd7 27. Qb6 Bc6 28. Bc5 d4 29. Nc1 Qg4 30. f3 Bxf3 31. Qb3+ Re6 32. Qxf3 Qxf3 33. gxf3 Rc6 34. Nd3 b6 35. Be7 Rc2 36. Bh4 Re2 37. Bf2 g5 38. Kf1 Rc2 39. Rc1 Rd2 40. Nxe5 Rxb2 41. Nc4 Rxa2 42. Nxb6 Nf4 43. Bxd4 Rxh2 44. Ra1 Rh1+ 45. Bg1 Nh3 46. Kg2 Rxg1+ 47. Rxg1 Nxg1 48. Kxg1 Kf7 49. Kg2 Kf6 50. Kf2 Kf5 51. Ke3 h5 52. Nc4 h4 53. Nd6+ Ke5 54. Nf7+ Kf6 55. Nh6 a5 56. Kd3 Ke5 57. Kc4 Kf4 58. Nf7 h3 0-1

[Event "Barranquilla Region-ch"]
[Site "Barranquilla"]
[Date "2020.01.04"]
[Round "2"]
[White "Acuna, Nelson David"]
[Black "Ariza de la Hoz, Jose Tobias"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "2034"]
[BlackElo "1672"]
[PlyCount "95"]
[EventDate "2020.01.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nf3 Bg4 5. Be2 Nf4 6. 0-0 Nxe2+ 7. Qxe2 c6 8. d4 e6 9. Bf4 Bd6 10. Bxd6 Qxd6 11. Qe3 Nd7 12. Rad1 0-0 13. Ne4 Qd5 14. h3 Bh5 15. b3 Bxf3 16. Qxf3 f5 17. Ng5 h6 18. Qxd5 exd5 19. Ne6 Rf6 20. Rfe1 Kf7 21. Nf4 g6 22. Nd3 Re8 23. f4 Re4 24. Ne5+ Nxe5 25. fxe5 Rxe1+ 26. Rxe1 Re6 27. Kf2 g5 28. Kf3 Kg6 29. h4 h5 30. hxg5 Kxg5 31. g3 b5 32. b4 a6 33. c3 Kg6 34. Kf4 Re7 35. a4 Re6 36. axb5 axb5 37. Ra1 Re7 38. Ra8 Kg7 39. Rc8 Re6 40. Kxf5 Rg6 41. Rc7+ Kh6 42. Kf4 Rg4+ 43. Kf3 Rg6 44. Rd7 Re6 45. Rd6 Rxd6 46. exd6 Kg6 47. Kf4 h4 48. gxh4 1-0

[Event "Barranquilla Region-ch"]
[Site "Barranquilla"]
[Date "2020.01.04"]
[Round "1"]
[White "De la Hoz Paternina, Felix Daniel"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "D08"]
[WhiteElo "1362"]
[BlackElo "2034"]
[PlyCount "102"]
[EventDate "2020.01.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. cxd5 Qxd5 4. dxe5 Qxd1+ 5. Kxd1 Nc6 6. Bf4 Bf5 7. e3 0-0-0+ 8. Kc1 Nge7 9. Bb5 a6 10. Bxc6 Nxc6 11. a3 Na5 12. b4 Nb3+ 13. Kb2 Nxa1 14. Nf3 Nc2 15. Nh4 Bd3 16. Rd1 Nxb4 17. axb4 Bxb1 18. Rxb1 Bxb4 19. Kb3 c5 20. Nf5 Rd3+ 21. Ka2 g6 22. Nd6+ Kd7 23. Nxb7 Rb8 24. Nxc5+ Bxc5 25. Rxb8 Rd2+ 26. Rb2 Rd3 27. Rc2 Bb4 28. Rc4 a5 29. Rd4+ Rxd4 30. exd4 Kc6 31. Kb3 Kd5 32. Be3 h5 33. f3 h4 34. Bf2 Be7 35. Kc3 Bd8 36. Kd3 h3 37. g3 Bb6 38. Be1 Bxd4 39. Bxa5 Bxe5 40. f4 Bd4 41. Bd2 Bg1 42. Be3 Bxh2 43. Bf2 g5 44. Ke3 Ke6 45. Ke4 Kf6 46. f5 Ke7 47. Kf3 Kf6 48. Kg4 Ke5 49. Kxg5 Ke4 50. Kg4 Ke5 51. Kxh3 Bxg3 1/2-1/2

[Event "COL-chT 21st"]
[Site "Cartagena"]
[Date "2019.11.30"]
[Round "3.4"]
[White "Acuna, Nelson David"]
[Black "Casas, Jose Fernando"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2013"]
[BlackElo "1774"]
[PlyCount "44"]
[EventDate "2019.11.30"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico"]
[BlackTeam "Fuerzas Armadas"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. 0-0 a6 5. a4 Be7 6. Nc3 Nf6 7. e5 Ng4 8. Re1 d5 9. exd6 Bxd6 10. Ne4 0-0 11. d3 Na5 12. Ba2 Ne5 13. Nxe5 Bxe5 14. Qh5 Bf6 15. Nxc5 Qb6 16. Ne4 Bd4 17. c3 f5 18. cxd4 fxe4 19. dxe4 Qxd4 20. Be3 Qxb2 21. Qxa5 Bd7 22. Rad1 Qxf2+ 1-0

[Event "COL-chT 21st"]
[Site "Cartagena"]
[Date "2019.11.30"]
[Round "5.4"]
[White "Acuna, Nelson David"]
[Black "Fonseca Pinto, Carlos Arturo"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2013"]
[BlackElo "2044"]
[PlyCount "85"]
[EventDate "2019.11.30"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico"]
[BlackTeam "Boyaca"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. 0-0 Be7 6. Nxd4 d6 7. Nc3 0-0 8. b3 Ne5 9. Be2 c5 10. Nf3 Bg4 11. Bb2 Bxf3 12. Bxf3 Rc8 13. Be2 Nc6 14. f4 a6 15. a4 Re8 16. Bd3 Bf8 17. Qf3 Nd4 18. Qh3 Qd7 19. Qh4 b5 20. axb5 axb5 21. e5 Qg4 22. Qxg4 Nxg4 23. exd6 Bxd6 24. Nxb5 Bf8 25. Nxd4 cxd4 26. Bxd4 Ne3 27. Bxe3 Rxe3 28. Rae1 Bc5 29. Kh1 g6 30. Rxe3 Bxe3 31. b4 Kg7 32. b5 f5 33. Rb1 Bxf4 34. b6 Rb8 35. b7 Kf6 36. Be2 g5 37. h3 Ke5 38. Bf3 Kd4 39. Rb5 Re8 40. Rd5+ Kc3 41. g3 Bxg3 42. Rc5+ Kd4 43. Rc8 1-0

[Event "COL-chT 21st"]
[Site "Cartagena"]
[Date "2019.11.30"]
[Round "9.4"]
[White "Acuna, Nelson David"]
[Black "Herrera, Juan Sebastian"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "2013"]
[BlackElo "2308"]
[PlyCount "74"]
[EventDate "2019.11.30"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico"]
[BlackTeam "Valle"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. d4 g6 2. Nf3 Bg7 3. b3 d6 4. Bb2 Nd7 5. e3 a6 6. Nbd2 b6 7. Be2 Bb7 8. 0-0 Ngf6 9. c4 0-0 10. Qc2 c5 11. d5 e6 12. e4 exd5 13. exd5 b5 14. Bd3 b4 15. Rfe1 a5 16. Re2 a4 17. Rae1 Re8 18. Rxe8+ Nxe8 19. Bxg7 Kxg7 20. bxa4 Nb6 21. Ne4 Nxa4 22. h4 Nf6 23. Nfg5 h6 24. Nxf6 Qxf6 25. Ne4 Qe7 26. Qd2 Re8 27. Re3 Qe5 28. Bc2 Nb6 29. Qe2 Ra8 30. Bb3 Rd8 31. g3 Ba6 32. Kg2 Nxd5 33. Rd3 Nf6 34. f3 d5 35. cxd5 Bxd3 36. Qxd3 Nxd5 37. Qc4 Ne3+ 0-1

[Event "COL-chT 21st"]
[Site "Cartagena"]
[Date "2019.11.30"]
[Round "1.4"]
[White "Acuna, Nelson David"]
[Black "Lopez Hernandez, Carlos Manuel"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2013"]
[BlackElo "2249"]
[PlyCount "68"]
[EventDate "2019.11.30"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico"]
[BlackTeam "Bolivar"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 e6 5. d3 Be7 6. 0-0 d5 7. Bb3 0-0 8. a3 Nd4 9. Ba2 dxe4 10. dxe4 Nc6 11. Be3 b6 12. h3 Bb7 13. Qc1 Nd4 14. Rd1 Nxf3+ 15. gxf3 Qc7 16. Bf4 Qc6 17. Qe3 Rad8 18. Kh2 Nh5 19. Bg5 Qc7+ 20. Kg2 Bxg5 21. Qxg5 Nf4+ 22. Kf1 Rd4 23. Ne2 Ba6 24. c4 Nxe2 25. Kxe2 Rfd8 26. b3 h6 27. Qg1 Qd6 28. a4 Rd2+ 29. Rxd2 Qxd2+ 30. Kf1 Rd3 31. Kg2 Qc3 32. Rc1 Qd4 33. Qe1 Bb7 34. Bb1 Rd2 0-1

[Event "COL-chT 21st"]
[Site "Cartagena"]
[Date "2019.11.30"]
[Round "6.4"]
[White "Basilio Santos, Eleazar"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1494"]
[BlackElo "2013"]
[PlyCount "85"]
[EventDate "2019.11.30"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]
[WhiteTeam "Sucre"]
[BlackTeam "Atlantico"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Nf3 Bd6 5. Bg3 c5 6. c3 Qc7 7. Nbd2 Nbd7 8. Bb5 c4 9. Ba4 0-0 10. Bc2 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Nf3 Bd6 14. 0-0 Bxg3 15. hxg3 Bg4 16. Qd4 Rad8 17. Ne5 Be6 18. Rab1 a5 19. Rfd1 b5 20. Qf4 Qb6 21. g4 Qb8 22. g5 Nh5 23. Qh2 g6 24. Rd4 b4 25. Rh4 f6 26. gxf6 Rxf6 27. g4 b3 28. axb3 cxb3 29. Bd3 Rdf8 30. f4 Qa7 31. Re1 Nxf4 32. Nc6 Qc7 33. exf4 Rxf4 34. Bxg6 Qxc6 35. Bxh7+ Kg7 36. Bf5 Qc5+ 37. Kh1 Rf1+ 38. Rxf1 Bxf5 39. gxf5 Qe3 40. Rg1+ Kf6 41. Qd6+ Kxf5 42. Rf1+ Kg5 43. Qh6# 1-0

[Event "COL-chT 21st"]
[Site "Cartagena"]
[Date "2019.11.30"]
[Round "8.4"]
[White "Corredor Rengifo, Luis Fernando"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2106"]
[BlackElo "2013"]
[PlyCount "93"]
[EventDate "2019.11.30"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]
[WhiteTeam "Tolima"]
[BlackTeam "Atlantico"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 c5 8. Qd2 Nc6 9. Bf4 h6 10. 0-0-0 Be6 11. Bxd6 Bxd6 12. Qxd6 Qa5 13. a3 Rd8 14. Qf4 0-0 15. Bc4 Bxc4 16. Qxc4 Rc8 17. g4 Ne7 18. g5 h5 19. Ne5 b5 20. Qe4 b4 21. Nc4 Qc7 22. a4 bxc3 23. b3 Ng6 24. Qf3 Qf4+ 25. Qxf4 Nxf4 26. Rhe1 Rfe8 27. Nd6 Rxe1 28. Rxe1 Rd8 29. Ne4 Re8 30. Re3 Nd5 31. Re2 Nf4 32. Nf6+ gxf6 33. Rxe8+ Kg7 34. gxf6+ Kxf6 35. Kd1 h4 36. Ra8 Kg5 37. f3 Ne6 38. Rxa7 f5 39. Rh7 Nd4 40. f4+ Kg4 41. a5 Nf3 42. a6 Kxf4 43. a7 Ng5 44. Rxh4+ Kf3 45. a8Q+ Ne4 46. Rxe4 fxe4 47. Qd5 1-0

[Event "COL-chT 21st"]
[Site "Cartagena"]
[Date "2019.11.30"]
[Round "4.4"]
[White "Torres, Jorge Emilio"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1998"]
[BlackElo "2013"]
[PlyCount "97"]
[EventDate "2019.11.30"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]
[WhiteTeam "Caldas"]
[BlackTeam "Atlantico"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 d5 4. e3 Bd6 5. Bg3 c5 6. Nbd2 Qc7 7. c3 Nbd7 8. Bd3 e5 9. dxe5 Nxe5 10. Nxe5 Bxe5 11. Nf3 Bd6 12. Bb5+ Bd7 13. Bxd7+ Qxd7 14. Bxd6 Qxd6 15. Qa4+ Qc6 16. Qxc6+ bxc6 17. Nd2 Rb8 18. Rb1 Ke7 19. Ke2 Rb6 20. Rhc1 Rhb8 21. Rc2 Kd6 22. f3 a5 23. c4 a4 24. Kd3 Nd7 25. f4 Nf6 26. b3 h5 27. Rcb2 a3 28. Rc2 Re8 29. Re1 Rb7 30. e4 dxe4+ 31. Nxe4+ Nxe4 32. Rxe4 Rxe4 33. Kxe4 Re7+ 34. Kf3 Re1 35. Rd2+ Kc7 36. Re2 Rb1 37. Re7+ Kb6 38. Re2 Ka5 39. h3 Kb4 40. g4 Rb2 41. gxh5 Kc3 42. Re3+ Kd4 43. Re4+ Kd3 44. Re3+ Kd4 45. Re4+ Kc3 46. Re3+ Kc2 47. f5 Rxa2 48. f6 gxf6 49. h6 1-0

[Event "COL-chT rapid"]
[Site "Cartagena"]
[Date "2019.11.29"]
[Round "4.4"]
[White "Acuna, Nelson David"]
[Black "Martinez, Jorge Alexander"]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "1903"]
[BlackElo "2138"]
[PlyCount "91"]
[EventDate "2019.11.29"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico"]
[BlackTeam "Santander"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. c4 Bb4+ 7. Nc3 Nc6 8. Nxc6 dxc6 9. 0-0 Qc7 10. Qe2 e5 11. h3 Be6 12. Be3 Qe7 13. Rac1 Bc5 14. a3 Bxe3 15. Qxe3 0-0 16. Be2 Rfd8 17. Rfd1 Rxd1+ 18. Rxd1 Rd8 19. c5 Bb3 20. Rc1 Rd4 21. Nb1 Rxe4 22. Qxb3 Rxe2 23. Rd1 Nd5 24. Nc3 Nxc3 25. Qxc3 g6 26. b4 Qf6 27. Qg3 h5 28. Rd7 h4 29. Qf3 Qxf3 30. gxf3 Ra2 31. Rxb7 Rxa3 32. Rb6 Rb3 33. Rxa6 Rxb4 34. Rxc6 Kg7 35. Rc8 Kh6 36. c6 Kg5 37. Kg2 Rc4 38. Kf1 Rc2 39. Kg2 f5 40. Rc7 Rc3 41. Re7 Rxc6 42. Rxe5 Kf4 43. Rb5 Rc4 44. Rb3 Ra4 45. Rc3 Rb4 46. Ra3 1/2-1/2

[Event "COL-chT rapid"]
[Site "Cartagena"]
[Date "2019.11.29"]
[Round "2.4"]
[White "Acuna, Nelson David"]
[Black "Torres, Richard"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1903"]
[BlackElo "1684"]
[PlyCount "120"]
[EventDate "2019.11.29"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico"]
[BlackTeam "Cauca"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. Bd3 Bd7 7. dxc5 Bxc5 8. 0-0 Qc7 9. Bf4 Nge7 10. Qe2 Ng6 11. Bg3 0-0 12. Nbd2 a6 13. Nb3 Ba7 14. h4 Nge7 15. Bxh7+ Kxh7 16. Ng5+ Kg6 17. Qg4 f5 18. exf6 e5 19. h5+ Kxf6 20. Nh7+ Kf7 21. Qf3+ Kg8 22. Nxf8 Rxf8 23. Qd3 Bf5 24. Qd2 Qd6 25. Nd4 Qf6 26. Nf3 e4 27. Nd4 Nxd4 28. cxd4 Qxd4 29. Qxd4 Bxd4 30. Bd6 Re8 31. Rfd1 Nc6 32. Ba3 Rd8 33. Rac1 Be5 34. b3 Bg4 35. Re1 Bxh5 36. Bc5 Bg6 37. b4 d4 38. a4 d3 39. b5 d2 40. bxc6 dxe1Q+ 41. Rxe1 bxc6 42. Rb1 e3 43. Re1 exf2+ 44. Bxf2 Bd4 45. Re6 Bxf2+ 46. Kxf2 Be8 47. Ke3 Rc8 48. Kd4 Bf7 49. Rd6 Bd5 50. g4 Kf7 51. Kc5 Rb8 52. g5 Rb1 53. Rd8 Ra1 54. Kb4 Kg6 55. Rd7 Ra2 56. Ra7 Bf3 57. Rxa6 Kxg5 58. Ra7 g6 59. a5 Be2 60. Kc5 Bb5 0-1

[Event "COL-chT rapid"]
[Site "Cartagena"]
[Date "2019.11.29"]
[Round "1.4"]
[White "Hernandez, Cristian Andres"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "E15"]
[WhiteElo "2321"]
[BlackElo "1903"]
[PlyCount "69"]
[EventDate "2019.11.29"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Risaralda"]
[BlackTeam "Atlantico"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8. Bc3 d5 9. Nbd2 0-0 10. 0-0 Nbd7 11. Re1 c5 12. cxd5 Nxd5 13. Bb2 Rc8 14. Rc1 Bf6 15. Ne4 Be7 16. a3 cxd4 17. Nxd4 Nc5 18. Nd2 Qd7 19. Nc4 Rfd8 20. e4 Nf6 21. e5 Nd5 22. h4 b5 23. Ne3 Bb7 24. Nxd5 Bxd5 25. b4 Bxg2 26. Kxg2 Qd5+ 27. Kg1 Na4 28. Ba1 a6 29. Rc2 Rc4 30. Rd2 Qb7 31. Nb3 Rxd2 32. Qxd2 h6 33. Na5 Qc7 34. Nxc4 Qxc4 35. Rc1 1-0

[Event "COL-chT rapid"]
[Site "Cartagena"]
[Date "2019.11.29"]
[Round "3.4"]
[White "Useche Contreras, Maigel"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "1976"]
[BlackElo "1903"]
[PlyCount "20"]
[EventDate "2019.11.29"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Meta"]
[BlackTeam "Atlantico"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. f3 d5 10. exd5 Nb4 1-0

[Event "COL-chT"]
[Site "Cartagena"]
[Date "2019.11.28"]
[Round "7.3"]
[White "Acuna, Nelson David"]
[Black "Basilio, Enoc"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2017"]
[BlackElo "1934"]
[PlyCount "45"]
[EventDate "2019.11.24"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico"]
[BlackTeam "Sucre"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d4 exd4 6. e5 d5 7. exf6 dxc4 8. fxg7 Rg8 9. Bg5 Qd5 10. Re1+ Be6 11. Nc3 Qf5 12. Ne4 Be7 13. Bxe7 Kxe7 14. Nxd4 Nxd4 15. Qxd4 b6 16. Rad1 Qg6 17. Qe5 Rac8 18. Ng3 Rxg7 19. Nf5+ Kf8 20. Nxg7 Qxg7 21. Qf4 Ke7 22. Qh4+ Qf6 23. Rd7+ 1-0

[Event "COL-chT"]
[Site "Cartagena"]
[Date "2019.11.27"]
[Round "6.4"]
[White "Pinzon, Jairo David"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2151"]
[BlackElo "2017"]
[PlyCount "154"]
[EventDate "2019.11.24"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Bogota"]
[BlackTeam "Atlantico"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e3 c5 2. b3 d6 3. Bb2 Nd7 4. d4 Ngf6 5. Nf3 g6 6. Be2 Bg7 7. 0-0 0-0 8. c4 cxd4 9. Nxd4 Nc5 10. Nc3 a6 11. Qd2 Rb8 12. Rfd1 Bd7 13. Rac1 Qb6 14. h3 Nce4 15. Qc2 Nxc3 16. Bxc3 Rbc8 17. Bf3 Rfe8 18. Qb2 h5 19. Ne2 Bc6 20. Bxc6 Qxc6 21. Nf4 e5 22. Nd3 Ne4 23. Nb4 Qd7 24. Nd5 Qf5 25. Bb4 Nc5 26. Bxc5 dxc5 27. Qe2 e4 28. Rc2 Rc6 29. Rcd2 Be5 30. f4 exf3 31. Qxf3 Qg5 32. Rf1 f5 33. Re2 Rce6 34. Nf4 Rc6 35. Nd5 Qg3 36. Qxg3 Bxg3 37. Rf3 h4 38. e4 Kg7 39. Rfe3 Be5 40. Kf1 Bd4 41. Rf3 fxe4 42. Rf4 e3 43. Rxh4 Rf8+ 44. Ke1 Re6 45. Rf4 Rb8 46. Rf3 b5 47. Nxe3 Bxe3 48. Rfxe3 Rxe3 49. Rxe3 bxc4 50. Kd2 cxb3 51. Rxb3 Rf8 52. Ke3 Re8+ 53. Kd3 Rf8 54. g3 Rf2 55. a3 Kf6 56. Ke4 Re2+ 57. Kd5 Re5+ 58. Kc4 Kf5 59. Rf3+ Kg5 60. Rf4 Re3 61. Rg4+ Kf5 62. a4 g5 63. Kxc5 Rb3 64. Kc6 a5 65. Kc5 Rb1 66. Rd4 Rb3 67. Rd5+ Kf6 68. h4 g4 69. Rd6+ Kf5 70. Rd5+ Kf6 71. Kc6 Rxg3 72. Kb6 Rh3 73. Rg5 Rxh4 74. Rg8 Kf5 75. Kxa5 Kf4 76. Kb6 g3 77. Rxg3 Ke5 1/2-1/2

[Event "COL-chT"]
[Site "Cartagena"]
[Date "2019.11.25"]
[Round "3.4"]
[White "Corredor Rengifo, Luis Fernando"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "D61"]
[WhiteElo "2158"]
[BlackElo "2017"]
[PlyCount "119"]
[EventDate "2019.11.24"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Tolima"]
[BlackTeam "Atlantico"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. c4 c6 5. Nc3 Be7 6. e3 Nbd7 7. Qc2 0-0 8. Rd1 b6 9. Be2 Bb7 10. 0-0 Qc7 11. cxd5 cxd5 12. Qb3 Rfc8 13. Bf4 Qd8 14. h3 a6 15. a4 Ne4 16. Nd2 Bd6 17. Ndxe4 Bxf4 18. Nd2 Bd6 19. f4 Nf6 20. Bd3 Rab8 21. Nf3 b5 22. axb5 axb5 23. f5 b4 24. Ne2 exf5 25. Bxf5 Ba6 26. Rde1 Rc7 27. Bd3 Bc4 28. Qd1 b3 29. Nf4 Re7 30. Nh4 Bb4 31. Nf5 Bxe1 32. Nxe7+ Qxe7 33. Rxe1 Ne4 34. Qg4 Qb4 35. Rd1 Bxd3 36. Nxd3 Qc4 37. Qf4 Rf8 38. Ne5 Qe2 39. Rf1 f6 40. Nd7 Re8 41. Qf5 Qxe3+ 42. Kh2 Qxd4 43. Rf4 g6 44. Nxf6+ Qxf6 45. Qxf6 Nxf6 46. Rxf6 Re2 47. Rd6 Rd2 48. Kg3 Kf7 49. Rd7+ Ke6 50. Rxh7 Rxb2 51. Rg7 Kf6 52. Rb7 Ke5 53. Rb4 d4 54. Kf3 Kd5 55. Rb6 g5 56. Rb8 Rc2 57. Rxb3 Rc3+ 58. Rxc3 dxc3 59. Ke2 Ke4 60. g3 1/2-1/2

[Event "COL-chT"]
[Site "Cartagena"]
[Date "2019.11.24"]
[Round "2.4"]
[White "Acuna, Nelson David"]
[Black "Pantoja, Armando Ramiro"]
[Result "1-0"]
[ECO "C51"]
[WhiteElo "2017"]
[BlackElo "1824"]
[PlyCount "117"]
[EventDate "2019.11.24"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Atlantico"]
[BlackTeam "Narino"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Be7 6. d4 d6 7. Qb3 Na5 8. Bxf7+ Kf8 9. Qa4 Kxf7 10. Qxa5 b6 11. Qa4 Bd7 12. Qc2 Bf6 13. 0-0 Ne7 14. Rd1 Ng6 15. dxe5 dxe5 16. Qb3+ Ke8 17. Ba3 Be7 18. Bb2 Qc8 19. Nbd2 Qa6 20. a4 Rd8 21. Nf1 Qc8 22. Ne3 Be6 23. c4 Bf6 24. Rxd8+ Qxd8 25. Rd1 Qc8 26. Ba3 Kf7 27. Nd5 Rd8 28. Rc1 c6 29. Ne3 Qc7 30. Nf5 Nf4 31. Qc2 g6 32. Ne3 Rd7 33. g3 Nh3+ 34. Kg2 Ng5 35. Ng1 Kg7 36. h4 Nf7 37. Qe2 Qd8 38. Nf3 Nd6 39. Bxd6 Rxd6 40. c5 bxc5 41. Rxc5 Qb6 42. Rc2 Qb4 43. Nc4 Bxc4 44. Rxc4 Qb6 45. Qc2 Kf7 46. Rc5 Qc7 47. Nxe5+ Bxe5 48. Rxe5 Rf6 49. Rc5 Qd7 50. e5 Re6 51. Qc4 Ke7 52. Ra5 Qc7 53. Qc5+ Ke8 54. Rxa7 Qxe5 55. Ra8+ Kd7 56. Qa7+ Qc7 57. Qd4+ Qd6 58. Ra7+ Ke8 59. Qh8+ 1-0

[Event "COL-chT"]
[Site "Cartagena"]
[Date "2019.11.24"]
[Round "1.4"]
[White "Tovio, Israel"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "B39"]
[WhiteElo "2292"]
[BlackElo "2017"]
[PlyCount "67"]
[EventDate "2019.11.24"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]
[WhiteTeam "Bolivar"]
[BlackTeam "Atlantico"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Qd2 Qa5 11. Rc1 b6 12. Be2 Bb7 13. f3 g5 14. a3 h5 15. 0-0 h4 16. b4 Qxa3 17. Rfd1 d6 18. Nd5 Bxd5 19. cxd5 Nf4 20. Bb5+ Kf8 21. Rc2 a5 22. Rdc1 Be5 23. Ra2 axb4 24. Rxa3 bxa3 25. Bd4 Ra5 26. Bxe5 dxe5 27. Qb4 Kg7 28. g3 hxg3 29. hxg3 a2 30. Ra1 Nh3+ 31. Kg2 g4 32. fxg4 Ng5 33. Qxe7 Kg6 34. Bd7 1-0

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.19"]
[Round "10"]
[White "Acuna, Nelson David"]
[Black "Cueto, Jose"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "1962"]
[BlackElo "2164"]
[PlyCount "162"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. a4 Be7 10. Be2 0-0 11. 0-0 a6 12. Na3 f5 13. f4 exf4 14. Bxf4 Nd7 15. Nc4 Nb6 16. Na5 Bd7 17. Qd4 Qc7 18. Be3 Nc8 19. Nc4 b5 20. Nb6 Nxb6 21. Qxb6 Qxb6 22. Bxb6 bxa4 23. Bd4 Bf6 24. Bxf6 Rxf6 25. Bd3 Rff8 26. Rfe1 Kf7 27. b3 axb3 28. cxb3 Rfb8 29. Ra3 a5 30. Rea1 Rb4 31. Rxa5 Rxa5 32. Rxa5 Rxb3 33. Ra7 Ke8 34. Be2 Rb4 35. Ra8+ Kf7 36. Ra7 Ke7 37. Ra8 Rd4 38. Bf3 Ra4 39. Rb8 Ra7 40. h4 Be8 41. Kf2 Bf7 42. Ke3 Kf6 43. Kf4 g6 44. Rb6 Ra4+ 45. Kg3 Ke5 46. Rb7 Bxd5 47. Bxd5 Kxd5 48. Rxh7 Ke5 49. Re7+ Kf6 50. Rd7 Rd4 51. Kf3 Rxh4 52. Rxd6+ Kg5 53. Rd8 Rc4 54. Rg8 Rc3+ 55. Kf2 Kh5 56. Rd8 g5 57. Rd4 f4 58. Ra4 Kg4 59. Rb4 Rc2+ 60. Kf1 Rd2 61. Ra4 Kg3 62. Ra3+ Kh4 63. Rh3+ Kg4 64. Ra3 Kh5 65. Ra4 Kh4 66. Rb4 Kg4 67. Ra4 Kf5 68. Ra5+ Kf6 69. Rb5 g4 70. g3 f3 71. Rb4 Kf5 72. Rb8 Rg2 73. Rf8+ Ke6 74. Re8+ Kf7 75. Ra8 Rxg3 76. Ra6 Rg2 77. Rb6 g3 78. Rb4 Rf2+ 79. Kg1 Ke6 80. Rg4 Rg2+ 81. Kh1 Rh2+ 0-1

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.18"]
[Round "8"]
[White "Acuna, Nelson David"]
[Black "Rios Parra, Alejandro"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1962"]
[BlackElo "2258"]
[PlyCount "92"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 Nf6 6. 0-0 0-0 7. d3 d6 8. h3 Rb8 9. Kh2 b5 10. Ng1 b4 11. Nce2 a5 12. f4 Qc7 13. g4 Nd7 14. Ng3 a4 15. Rb1 Nd4 16. N1e2 Ba6 17. Be3 Rfc8 18. Kh1 Qa5 19. Qd2 Nxe2 20. Nxe2 c4 21. Rfc1 Bxb2 22. Rg1 a3 23. f5 cxd3 24. cxd3 Ne5 25. fxg6 hxg6 26. Nf4 Bc3 27. Qd1 e6 28. Bf1 d5 29. exd5 exd5 30. Bg2 Rd8 31. Rf1 d4 32. Bc1 Bb7 33. Qe2 Bxg2+ 34. Qxg2 Qa8 35. Qxa8 Rxa8 36. g5 Ra5 37. h4 Rb8 38. Rb3 Nd7 39. Rf2 Nc5 40. Rb1 b3 41. h5 b2 42. Kh2 Rd8 43. hxg6 fxg6 44. Re2 bxc1Q 45. Rxc1 Rb5 46. Re5 Bd2 0-1

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.18"]
[Round "9"]
[White "Dominguez Rincon, Miller Duvan"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "2112"]
[BlackElo "1962"]
[PlyCount "109"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Bc4 0-0 8. Bb3 a5 9. 0-0 a4 10. Nxa4 Nxe4 11. Nb5 d5 12. Bb6 Qd7 13. Nc7 Rxa4 14. Bxa4 Bxb2 15. Qxd5 Bxa1 16. Rxa1 Nc3 17. Qxd7 Bxd7 18. Bb3 Ne2+ 19. Kf1 Ned4 20. Rd1 Rc8 21. Bxd4 Nxd4 22. Nd5 Bb5+ 23. Ke1 Nc6 24. c4 Ba6 25. Nb6 Rc7 26. Kd2 e6 27. Kc3 Ne5 28. Kd4 Nd7 29. Nxd7 Rxd7+ 30. Kc5 Rc7+ 31. Kb4 Kf8 32. c5 Ke7 33. Ba4 e5 34. Rd5 f6 35. Rd6 Bf1 36. g3 Bh3 37. Bb5 Be6 38. a4 f5 39. a5 e4 40. Rb6 Bd5 41. Kc3 Be6 42. Kd4 Bc8 43. Kd5 Bd7 44. c6 bxc6+ 45. Bxc6 Bxc6+ 46. Rxc6 Rd7+ 47. Kc5 Rd2 48. a6 Rxf2 49. a7 Ra2 50. Kb6 e3 51. Rc3 e2 52. Re3+ Kd6 53. Rd3+ Ke6 54. Re3+ Kd6 55. Rd3+ 1/2-1/2

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.17"]
[Round "6"]
[White "Acuna, Nelson David"]
[Black "Gonzalez Parejo, Ramon Junior"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "1962"]
[BlackElo "2221"]
[PlyCount "89"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 e5 3. Bc4 Nf6 4. d4 exd4 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Neg5 0-0-0 11. Nxe6 fxe6 12. Rxe6 Qf5 13. Qe2 h6 14. Qe4 Qxe4 15. Rxe4 Be7 16. Bd2 Bf6 17. Rb1 Rd5 18. b4 a6 19. a4 Kd7 20. Ne1 Ne5 21. Kf1 Nc4 22. Bc1 Nd6 23. Re2 a5 24. Bf4 axb4 25. Rxb4 b6 26. Nd3 Nf7 27. Rc4 c6 28. Re1 Ra8 29. Rb1 Bd8 30. Ke2 c5 31. Rb5 Rf5 32. Rxd4+ Kc6 33. Re4 Rf6 34. f3 Ra7 35. Rb3 Re7 36. Ne5+ Nxe5 37. Bxe5 Rfe6 38. Rbe3 Ra7 39. Bc3 Rxe4 40. Rxe4 Kd5 41. Kd3 Bg5 42. f4 Bf6 43. Bxf6 gxf6 44. f5 Rd7 45. Re6 1-0

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.17"]
[Round "7"]
[White "Sanchez, Sebastian Felipe"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2405"]
[BlackElo "1962"]
[PlyCount "51"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. e3 c5 4. c3 Nc6 5. Nd2 d5 6. Ngf3 Bd6 7. Bg3 0-0 8. Bd3 cxd4 9. exd4 b6 10. 0-0 Bb7 11. Qe2 Ne7 12. Bxd6 Qxd6 13. Ne5 Ng6 14. f4 a6 15. Rf3 Qc7 16. Raf1 Nh5 17. Qe3 Rae8 18. Rh3 Nf6 19. Qe1 Nd7 20. Bxg6 fxg6 21. Qh4 h6 22. Nxg6 Rf6 23. Qg4 Rf5 24. Qe2 Kh7 25. Qd3 Nf6 26. Nh4 1-0

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.16"]
[Round "4"]
[White "Acuna, Nelson David"]
[Black "De la Asuncion Ortiz, Angel Mario"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1962"]
[BlackElo "1774"]
[PlyCount "75"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Nf6 6. Bc4 Bg4 7. h3 Bh5 8. Bd2 Nbd7 9. Qe2 e6 10. 0-0-0 Bb4 11. g4 Bg6 12. Ne5 Nxe5 13. dxe5 Nd5 14. Ne4 Bxe4 15. Qxe4 Bxd2+ 16. Rxd2 0-0-0 17. Rhd1 Rd7 18. Rd3 h6 19. f4 Rhd8 20. f5 exf5 21. gxf5 Qb6 22. e6 fxe6 23. fxe6 Re7 24. Bb3 Rde8 25. Bxd5 cxd5 26. Qxd5 Qxe6 27. Qc5+ Rc7 28. Qxa7 Qa6 29. Qd4 b6 30. Kb1 Qc4 31. Qf2 Ree7 32. Qg2 Qe4 33. Qd2 Kb7 34. Rd6 Qf3 35. a3 Re2 36. Qd4 Rc5 37. Rd7+ Kc6 38. Qa4+ 1-0

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.16"]
[Round "5"]
[White "Orozco, Lina Yomayra"]
[Black "Acuna, Nelson David"]
[Result "0-1"]
[ECO "B70"]
[WhiteElo "2123"]
[BlackElo "1962"]
[PlyCount "85"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nde2 Nf6 7. g3 0-0 8. Bg2 d6 9. 0-0 Bd7 10. Nd5 Rc8 11. c3 Ne5 12. a4 Bc6 13. Ra2 Ned7 14. Be3 e6 15. Nb4 Bxe4 16. Bxe4 Nxe4 17. f3 Nec5 18. Qxd6 a5 19. Nc2 Rc6 20. Qd1 Ne5 21. Ned4 Rc8 22. Nb5 Nc4 23. Qe2 Qd3 24. Re1 Rfd8 25. Qf2 Bf8 26. Kg2 Qd5 27. Rea1 Nd3 28. Qe2 Ndxb2 29. Ne1 Nxa4 30. Rxa4 Qxb5 31. Rxa5 Nxe3+ 32. Qxe3 Qb2+ 33. Kh3 Rd2 34. Qg1 Qxc3 35. Ra8 Rxa8 36. Rxa8 Rd1 37. Qb6 Rxe1 38. Qxb7 Re2 39. Qb5 Rb2 40. Qg5 Qd2 41. Qxd2 Rxd2 42. Rc8 Kg7 43. Rc4 0-1

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.15"]
[Round "2"]
[White "Acuna, Nelson David"]
[Black "Brito Carrascal, Isabela"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "1962"]
[BlackElo "1497"]
[PlyCount "41"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6 dxc6 7. 0-0 e5 8. Qh5 Bd6 9. Nd2 b5 10. a4 Rb8 11. axb5 cxb5 12. Nb3 Nf6 13. Qg5 0-0 14. f4 h6 15. Qh4 Qb6+ 16. Kh1 Bb7 17. f5 Bc5 18. Nxc5 Qxc5 19. Bxh6 Qc6 20. Qg5 Nh5 21. Bxg7 1-0

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.15"]
[Round "3"]
[White "Carrillo Parra, Miguel Alfredo"]
[Black "Acuna, Nelson David"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2182"]
[BlackElo "1962"]
[PlyCount "91"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 b6 7. Nge2 Nge7 8. d4 cxd4 9. Nxd4 0-0 10. 0-0 Bb7 11. f4 d5 12. exd5 exd5 13. Qd2 Na5 14. b3 Rc8 15. Nce2 Ba6 16. Rf2 Re8 17. Bh3 Rc7 18. Rd1 Nec6 19. Nxc6 Nxc6 20. Nd4 Na5 21. f5 Rce7 22. Bh6 Bxh6 23. Qxh6 Re1+ 24. Rxe1 Rxe1+ 25. Kg2 Qf6 26. Qd2 Qe7 27. Bg4 Re3 28. Ne6 Bb7 29. Kf1 Ba6+ 30. Kg2 Bb7 31. Kf1 Ba6+ 32. Kg1 d4 33. Qxd4 Re1+ 34. Kg2 fxe6 35. f6 Bb7+ 36. Kh3 Qf7 37. Qd8+ Qf8 38. f7+ Kg7 39. Qf6+ Kh6 40. Qh4+ Kg7 41. Qf6+ Kh6 42. Be2 e5 43. Qh4+ Kg7 44. Qf6+ Kh6 45. g4 Rg1 46. Kh4 1-0

[Event "COL pre olympic sf3"]
[Site "Cartagena"]
[Date "2019.08.14"]
[Round "1"]
[White "Ojeda Ossa, Daniel De Jesus"]
[Black "Acuna, Nelson David"]
[Result "1/2-1/2"]
[ECO "E15"]
[WhiteElo "1676"]
[BlackElo "1962"]
[PlyCount "48"]
[EventDate "2019.08.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Bg2 c6 8. Bc3 d5 9. Nbd2 Nbd7 10. 0-0 0-0 11. Ne5 Rc8 12. e4 c5 13. exd5 exd5 14. Re1 cxd4 15. Bxd4 Nxe5 16. Bxe5 dxc4 17. Nxc4 Bxc4 18. bxc4 Qxd1 19. Raxd1 Rxc4 20. Bxf6 Bxf6 21. Rd7 a5 22. Rxf7 Kxf7 23. Bd5+ Kg6 24. Bxc4 Bd4 1/2-1/2

[Event "COL-chT Liga Quintal"]
[Site "Barranquilla"]
[Date "2019.06.16"]
[Round "7.3"]
[White "Acuna, Nelson David"]
[Black "Salcedo Rodelo, Brayan"]
[Result "1-0"]
[ECO "B59"]
[WhiteElo "1894"]
[BlackElo "1623"]
[PlyCount "97"]
[EventDate "2019.03.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Centenario y Asociados"]
[BlackTeam "Quintal B"]
[WhiteTeamCountry "COL"]
[BlackTeamCountry "COL"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. Be2 Nf6 5. d4 cxd4 6. Nxd4 e5 7. Nb3 Be7 8. 0-0 0-0 9. Be3 Be6 10. h3 Ne8 11. Qd2 a5 12. a4 Nb4 13. Rfd1 Rc8 14. Rac1 Nc7 15. Nxa5 Rb8 16. Bb6 h6 17. Nb5 Nba6 18. Nxd6 Bg5 19. Be3 Bxe3 20. Qxe3 Qd7 21. Nb5 Qe7 22. b3 Nxb5 23. Bxb5 Qb4 24. Bxa6 Qxa5 25. Bb5 Qb4 26. Qd2 Qxe4 27. Re1 Qg6 28. Bd3 Qh5 29. Qe3 f6 30. f4 Rbe8 31. fxe5 Bd5 32. Qg3 Rxe5 33. Rxe5 fxe5 34. Re1 e4 35. Bxe4 Bxe4 36. Rxe4 Qc5+ 37. Kh2 Rf1 38. Re8+ Kf7 39. Qe3 Qc7+ 40. Qe5 Qd7 41. Rb8 Rf5 42. Rxb7 Qxb7 43. Qxf5+ Kg8 44. a5 Qc7+ 45. Kh1 Qd8 46. Qc5 Qd2 47. Qc7 Qe1+ 48. Kh2 Qe2 49. Qc4+ 1-0

