[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.30"]
[Round "7"]
[White "Berenstein, Gustavo"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1619"]
[BlackElo "1893"]
[PlyCount "58"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. d4 d5 3. f3 g6 4. Be3 Bg7 5. Nc3 e6 6. Qd2 a5 7. Be2 Na6 8. e5 h5 9. Nh3 b5 10. 0-0 Ne7 11. Bd3 Nb4 12. Bg5 Qb6 13. Ne2 Bxe5 14. c3 Nxd3 15. Qxd3 Nf5 16. Kh1 Bg7 17. g4 Ne7 18. gxh5 Rxh5 19. Nef4 Rh8 20. Bxe7 Kxe7 21. Rae1 Qc7 22. Rg1 Bd7 23. Rxg6 Rxh3 24. Nxh3 fxg6 25. Qxg6 Bf6 26. Ng5 Qf4 27. Qf7+ Kd6 28. Nxe6 Qxf3+ 29. Kg1 Bxd4+ 0-1

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.29"]
[Round "6"]
[White "Perez, William"]
[Black "Tapia Varela, Luany Anabel"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1893"]
[BlackElo "1334"]
[PlyCount "79"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 e5 7. 0-0 Nge7 8. d4 cxd4 9. exd4 exd4 10. Nb5 0-0 11. Nexd4 Nxd4 12. Nxd4 d5 13. c5 a6 14. Bg5 h6 15. Be3 Nc6 16. Qd2 Kh7 17. b4 Be6 18. h3 Qd7 19. Kh2 Ne5 20. Bf4 Nc4 21. Qd3 Kg8 22. h4 Kh7 23. h5 Rad8 24. Rae1 Nb2 25. Qc3 Na4 26. hxg6+ fxg6 27. Qe3 Bf5 28. Qd2 Be4 29. Bh3 Qf7 30. Ne6 Bc3 31. Nxf8+ Rxf8 32. Qc1 Bxe1 33. Rxe1 g5 34. Be3 h5 35. Bd4 g4 36. Bg2 Bxg2 37. Kxg2 Qf3+ 38. Kg1 h4 39. Qg5 Rf7 40. Qh5+ 1-0

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.28"]
[Round "5"]
[White "Arribas Robaina, Maritza"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2174"]
[BlackElo "1893"]
[PlyCount "53"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. Be3 a5 7. 0-0 Ne7 8. Nh4 Bg6 9. Nd2 Nf5 10. Nxf5 Bxf5 11. g4 Bg6 12. f4 f5 13. Bd3 Be7 14. Rf2 0-0 15. Rg2 Rf7 16. Nf1 Qb6 17. h4 h6 18. gxf5 Bxf5 19. Bxf5 Rxf5 20. Qg4 Rf7 21. Qxe6 Qxb2 22. Rd1 Bxh4 23. c4 Qc3 24. cxd5 Nf8 25. Qg4 g5 26. Qh5 Ng6 27. Qxh6 1-0

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.27"]
[Round "4"]
[White "Perez, William"]
[Black "Rosas Valdes, Javier Alfonso"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1893"]
[BlackElo "1039"]
[PlyCount "117"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. g3 d6 4. Bg2 Nf6 5. Nf3 e6 6. 0-0 Be7 7. d4 cxd4 8. Nxd4 d5 9. cxd5 exd5 10. Qa4 Qd7 11. Rd1 0-0 12. Nb3 Nb4 13. Qxd7 Bxd7 14. Bg5 Bc6 15. a3 Na6 16. Rd2 Rfe8 17. Bxf6 Bxf6 18. Nxd5 Bxd5 19. Bxd5 Rad8 20. Rad1 b6 21. e4 Rb8 22. f4 Nc5 23. Nxc5 bxc5 24. e5 Be7 25. a4 a5 26. b3 g6 27. Bc4 h5 28. Rd7 Rbd8 29. R1d5 Kf8 30. Ra7 Ra8 31. Rdd7 Rad8 32. Rxd8 Rxd8 33. Rxa5 Rd1+ 34. Kg2 Bd8 35. Ra8 Ke7 36. Ra7+ Rd7 37. Rxd7+ Kxd7 38. Bxf7 g5 39. Bxh5 gxf4 40. gxf4 Ke6 41. Kf3 Kf5 42. Bg4+ Kg6 43. Ke4 Kf7 44. Kd5 Be7 45. Bh5+ Kf8 46. a5 Bd8 47. a6 Bb6 48. Kd6 Kg7 49. e6 Kh6 50. Bg4 c4 51. bxc4 Bc7+ 52. Kxc7 Kg7 53. e7 Kf6 54. e8Q Kg7 55. Qe7+ Kg6 56. Qe6+ Kg7 57. Bf5 Kh8 58. Qh6+ Kg8 59. Be6# 1-0

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.26"]
[Round "3"]
[White "Hernandez Montes, Jhon Sebastian"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2280"]
[BlackElo "1893"]
[PlyCount "81"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e4 h6 4. Bxf6 Qxf6 5. c3 d6 6. Bc4 g6 7. Ne2 Nd7 8. 0-0 Bg7 9. f4 0-0 10. Nd2 Nb6 11. Bb3 Bd7 12. a4 a5 13. Qe1 Rfe8 14. g4 Rac8 15. Qg3 Qe7 16. e5 dxe5 17. fxe5 Bc6 18. Rf2 Qd7 19. Raf1 Rf8 20. Bc2 Nxa4 21. b3 Nb6 22. h4 a4 23. bxa4 Bxa4 24. Bb1 c5 25. Ne4 cxd4 26. cxd4 Bc2 27. Nd6 Bxb1 28. Nxc8 Qxc8 29. Rxb1 Nd5 30. h5 g5 31. Qb3 b6 32. Ng3 f6 33. exf6 Bxf6 34. Ne2 Qd7 35. Qd3 Bg7 36. Rxf8+ Kxf8 37. Qe4 Nf6 38. Qa8+ Ne8 39. Kg2 e5 40. Qf3+ Kg8 41. dxe5 1-0

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.16"]
[Round "9"]
[White "Perez, William"]
[Black "Vallejo, Humberto"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "1871"]
[BlackElo "1959"]
[PlyCount "83"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e5 3. Bg2 Bc5 4. Nc3 0-0 5. e3 Re8 6. d3 c6 7. Nge2 d5 8. cxd5 cxd5 9. d4 exd4 10. exd4 Bb6 11. 0-0 Bg4 12. Be3 Nc6 13. Re1 Qd7 14. Qb3 Na5 15. Qa4 Qxa4 16. Nxa4 Bxe2 17. Nxb6 axb6 18. Rxe2 Nb3 19. Rae1 Rxa2 20. Rd1 Na5 21. Rc2 Nc4 22. Bg5 Ne4 23. Bc1 f5 24. Re1 Kf7 25. Rce2 Ra1 26. Bh3 g6 27. g4 Kf6 28. b3 fxg4 29. Bxg4 Na5 30. f3 Nxb3 31. fxe4 Rxc1 32. e5+ Kg5 33. Rxc1 Nxc1 34. Rg2 Kf4 35. Bd7 Ra8 36. e6 Ra1 37. Rf2+ Ke3 38. Kg2 Ne2 39. Rf3+ Ke4 40. e7 Ra8 41. Rf8 Nf4+ 42. Kg3 1-0

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.15"]
[Round "6"]
[White "Hurtado Henao, Pablo"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1782"]
[BlackElo "1871"]
[PlyCount "55"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Nc6 4. d3 Bg7 5. Nc3 e5 6. a3 a5 7. Nd5 h6 8. Be3 d6 9. b4 axb4 10. axb4 Rxa1 11. Qxa1 Nxb4 12. Nxb4 cxb4 13. Qa4+ Qd7 14. Qxb4 Ne7 15. Nf3 0-0 16. 0-0 f5 17. Rb1 Kh7 18. Nd2 f4 19. Bb6 Nc6 20. Qa3 Re8 21. Ne4 fxg3 22. hxg3 Nd4 23. Bxd4 exd4 24. Qxd6 Qa4 25. Qc7 Kh8 26. Bf3 Qc2 27. Rb6 g5 28. Rg6 1-0

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.15"]
[Round "7"]
[White "Perez, William"]
[Black "Payares Diaz, Alejandro"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "1871"]
[BlackElo "1296"]
[PlyCount "97"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 0-0 5. e4 d6 6. Nge2 e5 7. 0-0 Nc6 8. d3 h6 9. f4 Bd7 10. h3 Qc8 11. Kh2 Ne8 12. Nd5 Qd8 13. f5 g5 14. g4 f6 15. Be3 Ne7 16. Kg3 c6 17. Ndc3 Nc7 18. Qb3 Bc8 19. Rh1 Kf7 20. h4 Ke8 21. d4 Rb8 22. dxe5 dxe5 23. Rad1 Bd7 24. hxg5 hxg5 25. Rh7 Rf7 26. Bxa7 Ra8 27. Qxb7 Bf8 28. Rxf7 Kxf7 29. Bb6 Rc8 30. c5 Ng8 31. b4 Ne7 32. a4 Ke8 33. a5 Bg7 34. a6 Bf8 35. a7 Bg7 36. Bxc7 Rxc7 37. a8Q Rxb7 38. Qxb7 Bf8 39. Na4 Nc8 40. Nec3 Be7 41. Bf1 Bf8 42. b5 cxb5 43. Rxd7 Qxd7 44. Bxb5 Qxb5 45. Nxb5 Ne7 46. Nd6+ Kd8 47. Nb6 Nxf5+ 48. gxf5 g4 49. Qd7# 1-0

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.14"]
[Round "4"]
[White "Londono, Miguel Angel"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1551"]
[BlackElo "1871"]
[PlyCount "168"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 d3 4. Bxd3 Nc6 5. Bc4 Nf6 6. Nf3 d6 7. 0-0 e6 8. Qe2 Be7 9. Rd1 Qc7 10. Na3 a6 11. Bf4 0-0 12. Bb3 e5 13. Bg5 b5 14. Nc2 Be6 15. Bxf6 Bxf6 16. Ne3 Be7 17. Rd2 Rfc8 18. Nd5 Bxd5 19. Bxd5 Rab8 20. a3 Na5 21. Rad1 Nc4 22. Rd3 a5 23. Qc2 Nb6 24. Ba2 Nc4 25. Nd2 Rb6 26. Nf1 Bg5 27. g3 g6 28. h4 Bh6 29. Nh2 Bf8 30. Ng4 Qb7 31. Nf6+ Kg7 32. Nd5 Rbc6 33. Qe2 Qd7 34. g4 Be7 35. g5 Rf8 36. Rg3 f6 37. gxf6+ Bxf6 38. h5 Bh4 39. Rdd3 Bxg3 40. Rxg3 a4 41. hxg6 hxg6 42. Qh5 Qf7 43. f3 Re8 44. Qg5 Rcc8 45. Bxc4 bxc4 46. Ne3 Re6 47. Rh3 Rh8 48. Nf5+ Kg8 49. Nh6+ Rxh6 50. Qxh6 Qg7 51. Qg5 Qf6 52. Qh6 Re7 53. Qe3 Rh7 54. Rg3 Rb7 55. Qd2 Kg7 56. Rh3 Qf4 57. Qxf4 exf4 58. Rh2 Kf6 59. Rd2 Ke6 60. Kg2 Rb5 61. Kh3 Rg5 62. Rf2 d5 63. Kh4 Rg3 64. exd5+ Kxd5 65. Rd2+ Ke5 66. Rd8 Rxf3 67. Re8+ Kf5 68. Rf8+ Ke4 69. Re8+ Kd3 70. Kg4 Rf2 71. Rd8+ Ke3 72. Re8+ Kd3 73. Rd8+ Kc2 74. Rb8 f3 75. Rb4 Kd3 76. Rxa4 Rxb2 77. Kxf3 Rb6 78. Ra8 Rf6+ 79. Kg4 Kxc3 80. a4 Kb2 81. Rb8+ Kc2 82. Kg5 Ra6 83. a5 Rxa5+ 84. Kf4 Rd5 0-1

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.14"]
[Round "5"]
[White "Perez, William"]
[Black "Duque Pinzon, Manuel Santiago"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "1871"]
[BlackElo "1987"]
[PlyCount "81"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e5 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nxc3 6. dxc3 Qxd1+ 7. Kxd1 Bc5 8. e3 0-0 9. Nf3 Nc6 10. Ke2 e4 11. Nd4 Bg4+ 12. Kd2 Rfe8 13. Nxc6 bxc6 14. Re1 a5 15. h3 Bc8 16. b3 a4 17. b4 Bf8 18. a3 g6 19. Bf1 Be6 20. c4 Bg7 21. Rb1 c5 22. b5 Red8+ 23. Kc2 Rd3 24. Bxd3 exd3+ 25. Kd2 Bxc4 26. Bb2 Bf8 27. Be5 Bd6 28. Bxd6 cxd6 29. Kc3 Bb3 30. Kxd3 Ra5 31. e4 Rxb5 32. Kc3 f6 33. Red1 Rb6 34. Rd3 Kf7 35. Kd2 Ke6 36. Ke3 Rc6 37. Rb2 Rb6 38. g4 h6 39. f4 g5 40. f5+ Ke5 41. Rbd2 1-0

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.13"]
[Round "3"]
[White "Perez, William"]
[Black "Bedoya Escudero, Helmer De Jesus"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1871"]
[BlackElo "1626"]
[PlyCount "61"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 c5 4. e3 a6 5. c4 e6 6. Be2 b6 7. cxd5 exd5 8. 0-0 Nbd7 9. d4 Bb7 10. Nc3 Bd6 11. Rc1 0-0 12. Qd3 Qe7 13. Rfd1 Rfe8 14. Qf5 h6 15. Bf1 Qe6 16. Qd3 Rac8 17. dxc5 bxc5 18. Ne2 Ne5 19. Nxe5 Bxe5 20. Ba3 c4 21. Qc2 c3 22. Nd4 Qg4 23. h3 Qd7 24. Bd3 g6 25. Ne2 Qc7 26. Bb4 Ne4 27. Bxe4 dxe4 28. Bxc3 Re6 29. Bxe5 Qxc2 30. Rxc2 Rxe5 31. Rxc8+ 1-0

[Event "Medellin de La Raza U2000 op"]
[Site "Medellin"]
[Date "2023.10.12"]
[Round "1"]
[White "Narvaez Berrio, Alexander"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1364"]
[BlackElo "1871"]
[PlyCount "102"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. c3 cxd4 5. cxd4 Qb6 6. Qb3 Qxb3 7. axb3 Nc6 8. Bb5 Bd7 9. h3 e6 10. Nf3 Bb4+ 11. Nbd2 Ne4 12. Rd1 Ke7 13. 0-0 Nxd2 14. Nxd2 Nxd4 15. exd4 Bxb5 16. Rfe1 Rhc8 17. Rc1 Kd7 18. Red1 f6 19. Nb1 g5 20. Bd2 Bxd2 21. Nxd2 Be2 22. Re1 Rxc1 23. Rxc1 Rc8 24. Rc3 a5 25. f3 Rc6 26. Kf2 Bd1 27. Rxc6 bxc6 28. Ke3 Bc2 29. g3 Kd6 30. f4 gxf4+ 31. gxf4 c5 32. h4 Kc6 33. dxc5 Kxc5 34. Nf3 Bf5 35. Nd4 Bg4 36. Kd3 e5 37. fxe5 fxe5 38. b4+ axb4 39. Nb3+ Kd6 40. Nd2 Bf5+ 41. Ke3 d4+ 42. Kf2 Kd5 43. Nf1 e4 44. Ng3 Bg4 45. Nf1 e3+ 46. Ke1 Kc4 47. Nh2 Bh5 48. Nf1 Kb3 49. Ng3 Bg4 50. Ne4 d3 51. Nc5+ Kc2 0-1

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.07"]
[Round "9"]
[White "Carrillo Marval, Maria Angelica"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "1709"]
[BlackElo "1933"]
[PlyCount "61"]
[EventDate "2023.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 a6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Nf6 7. e5 Nfd7 8. Ne1 Bxe2 9. Nxe2 c5 10. c3 Nc6 11. a3 cxd4 12. cxd4 a5 13. Be3 Qb6 14. Rb1 Be7 15. Nc3 0-0 16. Qg4 Rfd8 17. Kh1 Qa6 18. Nf3 b5 19. Ng5 Nf8 20. Ne2 Qc8 21. Nf4 Qd7 22. Nh5 Ng6 23. h4 h6 24. Nf3 Kh8 25. Nxg7 Kxg7 26. h5 Kh7 27. hxg6+ fxg6 28. Qh3 Rh8 29. Kg1 Kg7 30. Qg4 b4 31. Nh4 1/2-1/2

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.07"]
[Round "8"]
[White "Jaimes, Fredy Alexander"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1834"]
[BlackElo "1933"]
[PlyCount "57"]
[EventDate "2023.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. cxd5 Nxd5 7. Bb5 Nxc3 8. bxc3 e6 9. Nf3 Qa5 10. Qb3 a6 11. Bxc6+ bxc6 12. 0-0 Bd6 13. c4 0-0 14. c5 Bb8 15. Rb1 e5 16. Bd2 Qd8 17. Bg5 Qa5 18. Qb6 Qxb6 19. Rxb6 Ba7 20. Rxc6 Bb7 21. Rd6 Bxf3 22. gxf3 exd4 23. c6 f6 24. Bd2 Bc5 25. Rd5 Bb6 26. Rb1 Bc7 27. Rb7 Be5 28. f4 Bb8 29. Rdd7 1-0

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.06"]
[Round "6"]
[White "Castano Herrera, Saray"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1753"]
[BlackElo "1933"]
[PlyCount "110"]
[EventDate "2023.08.03"]
[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. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e6 6. Nge2 Nge7 7. 0-0 0-0 8. d4 cxd4 9. exd4 d5 10. cxd5 exd5 11. Be3 Be6 12. Nf4 Qd7 13. Nxe6 fxe6 14. Qd2 Nf5 15. Ne2 Rf7 16. Rac1 a5 17. b3 h6 18. h4 Qe7 19. Rfe1 Qf6 20. Rc2 Kh7 21. Rd1 Rg8 22. a3 Bf8 23. Bh3 Bxa3 24. Bxf5 Qxf5 25. Ra2 Bd6 26. Nc3 g5 27. hxg5 hxg5 28. Qc2 Qxc2 29. Rxc2 Kg6 30. Kg2 Rh8 31. Nb5 Bb4 32. Rh1 Rxh1 33. Kxh1 g4 34. Bf4 Kf5 35. Re2 Re7 36. Be5 Rd7 37. Kg2 Be7 38. f4 Bb4 39. Kf1 Rh7 40. Kg2 Rh3 41. Nc7 Rh7 42. Nb5 Kg6 43. Bd6 Kf6 44. Bxb4 Nxb4 45. Re5 Nc6 46. Rg5 Rg7 47. Rh5 Ke7 48. Kf2 Kd7 49. Ke3 Ne7 50. Kf2 Nf5 51. Rg5 Rxg5 52. fxg5 Ke7 53. Ke2 Nxg3+ 54. Ke3 Nf5+ 55. Kf4 g3 0-1

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.05"]
[Round "5"]
[White "Perez, William"]
[Black "Schnell, Sebastian Narayana"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "1933"]
[BlackElo "1823"]
[PlyCount "104"]
[EventDate "2023.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. c4 d6 5. d4 0-0 6. Nc3 Nbd7 7. g3 c6 8. Bg2 e5 9. dxe5 dxe5 10. Qc2 Re8 11. e4 Nc5 12. Rd1 Qc7 13. 0-0 a5 14. Bc1 h6 15. Be3 Na6 16. h3 Kh7 17. c5 Be6 18. a3 Nd7 19. Na4 Rf8 20. Nd2 f5 21. f3 f4 22. Bf2 fxg3 23. Bxg3 Nf6 24. Nc4 Nh5 25. Bh2 Nf4 26. Bxf4 Rxf4 27. Nab6 Raf8 28. Nxa5 Rh4 29. b4 Qe7 30. Nac4 Bxh3 31. Qd2 Rff4 32. Qd8 Qf7 33. Rf2 g5 34. Rd7 Bxd7 35. Qxd7 Qxd7 36. Nxd7 g4 37. Ndxe5 gxf3 38. Bxf3 Nc7 39. Rd2 Ne6 40. Rd7 Ng5 41. Bg2 Nxe4 42. Nf3 Rh5 43. Nce5 Ng5 44. Rxb7 Kg8 45. a4 Bxe5 46. Nxe5 Nh3+ 47. Bxh3 Rxe5 48. b5 Rg5+ 49. Bg2 Rfg4 50. bxc6 Rxg2+ 51. Kf1 Rc2 52. c7 Rgxc5 0-1

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.05"]
[Round "4"]
[White "Rueda Rojas, Richard Alejandro"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "1796"]
[BlackElo "1933"]
[PlyCount "81"]
[EventDate "2023.08.03"]
[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. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. 0-0 Bg7 5. c4 e5 6. Nc3 Nge7 7. e4 0-0 8. d3 d6 9. Ne1 h6 10. f4 f5 11. Be3 Kh7 12. Kh1 fxe4 13. dxe4 Nd4 14. Nd3 b6 15. Qd2 Be6 16. Nd5 Qd7 17. Rae1 Nec6 18. b3 Bg4 19. Bxd4 Nxd4 20. Ne3 Bh3 21. f5 Bxg2+ 22. Qxg2 Rab8 23. fxg6+ Kxg6 24. Nf5 b5 25. Nxd4 cxd4 26. c5 a5 27. Qe2 Rxf1+ 28. Rxf1 Rf8 29. Rxf8 Bxf8 30. Qf3 Be7 31. Kg2 Qe6 32. c6 Bd8 33. Qf8 Bc7 34. Nf2 d5 35. Ng4 Qxg4 36. Qg8+ Kh5 37. Qf7+ Qg6 38. g4+ Kxg4 39. Qxg6+ Kf4 40. Qg3+ Kxe4 41. Qf3# 1-0

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.04"]
[Round "3"]
[White "Cuervo Velasquez, Juan Manuel"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "1750"]
[BlackElo "1933"]
[PlyCount "113"]
[EventDate "2023.08.03"]
[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. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 d6 5. h3 Nd4 6. d3 c5 7. g3 Be7 8. Bg2 Bd7 9. 0-0 a6 10. Nxd4 cxd4 11. Ne2 b5 12. b3 bxc4 13. bxc4 Rb8 14. f4 h5 15. Bd2 Rb2 16. Qc1 Qb8 17. Rb1 Rxb1 18. Qxb1 0-0 19. Ba5 Qa8 20. Qc2 Rb8 21. Rb1 Bc6 22. Rxb8+ Qxb8 23. Qb3 Qa8 24. Nc1 Nd7 25. Bf1 Nc5 26. Qa3 exf4 27. gxf4 Ne6 28. Bb4 Qb8 29. Ne2 Qb6 30. f5 Nc5 31. Bxc5 dxc5 32. Qb3 Qc7 33. Qb2 Bg5 34. Bg2 Be3+ 35. Kh1 g6 36. fxg6 fxg6 37. Qb1 Ba4 38. Ng1 g5 39. Qf1 Qf4 40. Qe2 g4 41. e5 Qg3 42. Bd5+ Kg7 43. Qg2 Qxg2+ 44. Kxg2 Bf4 45. e6 Kf6 46. hxg4 hxg4 47. Ne2 Bd6 48. Ng3 Be7 49. Ne4+ Kf5 50. Ng3+ Ke5 51. Kf2 Bh4 52. Kg2 Bc2 53. Ne4 Be7 54. Nf2 Kf4 55. Be4 a5 56. Bh7 a4 57. a3 1-0

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.03"]
[Round "1"]
[White "Perez, William"]
[Black "Sierra Mejia, Juan Pablo"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "1933"]
[BlackElo "2154"]
[PlyCount "86"]
[EventDate "2023.08.03"]
[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. c4 Nf6 2. g3 e6 3. Nf3 b6 4. Bg2 Bb7 5. b3 Be7 6. Bb2 0-0 7. 0-0 c5 8. Nc3 h6 9. d4 cxd4 10. Nb5 a6 11. Nbxd4 d5 12. cxd5 Bxd5 13. Ne5 Bxg2 14. Kxg2 Qc7 15. Ndf3 Rd8 16. Rc1 Qb7 17. Qc2 Nd5 18. Rfd1 Bg5 19. e3 Nd7 20. Qc6 Qxc6 21. Nxc6 Re8 22. Nxg5 hxg5 23. e4 N5f6 24. h3 a5 25. f3 a4 26. b4 a3 27. Bd4 Kh7 28. Bxf6 Nxf6 29. Rd3 Rec8 30. Rcc3 Rc7 31. Kf2 Nd7 32. Ke3 Rac8 33. Ne7 Rxc3 34. Nxc8 Rxc8 35. Rxd7 Rc2 36. Rd2 Rb2 37. Kd3 Rxb4 38. Kc3 Rb1 39. Rd3 b5 40. f4 gxf4 41. gxf4 Rb2 42. Rd2 b4+ 43. Kd3 Rxd2+ 0-1

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.07.03"]
[Round "8"]
[White "Perez, William"]
[Black "Matta, Paola Andrea"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1934"]
[BlackElo "1911"]
[PlyCount "93"]
[EventDate "2023.06.28"]
[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. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 e6 5. Nb5 d5 6. cxd5 exd5 7. Bxd5 Ne7 8. Bg2 0-0 9. Nf3 Nbc6 10. 0-0 Bf5 11. d3 Qd7 12. a3 Rad8 13. Qc2 a6 14. Nc3 c4 15. Rd1 cxd3 16. exd3 Bxd3 17. Qb3 Qc8 18. Bg5 Bf5 19. Qb6 f6 20. Be3 Bg4 21. Rdc1 Rfe8 22. Na4 Nd5 23. Qb3 Kh8 24. Nb6 Nxb6 25. Bxb6 Rd6 26. Nd4 Qd7 27. Nxc6 bxc6 28. Be3 Rd8 29. Qc2 Bf5 30. Qa4 Qb7 31. b4 Bd7 32. Qc2 f5 33. Rab1 Be8 34. Bg5 Rc8 35. Re1 Qb5 36. Rbd1 Rxd1 37. Qxd1 h6 38. Bd8 Bf7 39. Qd7 Qb8 40. Bf6 Rc7 41. Qd4 Bd5 42. Bxd5 cxd5 43. Bxg7+ Rxg7 44. Qxd5 Qc7 45. Re8+ Kh7 46. Qa8 Rd7 47. Rh8+ 1-0

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.07.02"]
[Round "6"]
[White "Aponte Castillo, Jose Ernesto"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2047"]
[BlackElo "1934"]
[PlyCount "47"]
[EventDate "2023.06.28"]
[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. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 Qd7 8. Nd2 e6 9. Ngf3 Bxf3 10. Nxf3 Bd6 11. Bxd6 Qxd6 12. 0-0 0-0 13. Rae1 Qc7 14. Ne5 Nxe5 15. Rxe5 b5 16. f4 Rab8 17. a3 a5 18. h3 b4 19. axb4 axb4 20. c4 dxc4 21. Qxc4 Qd6 22. Rd1 Nd7 23. Re4 Rfc8 24. Qb3 1-0

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.07.02"]
[Round "7"]
[White "Perez, William"]
[Black "Pinillo Canon, Silvana"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "1934"]
[BlackElo "1841"]
[PlyCount "96"]
[EventDate "2023.06.28"]
[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. Nf3 Nf6 2. b3 d5 3. Bb2 Bg4 4. e3 Nbd7 5. d4 e6 6. Be2 Bd6 7. Nbd2 c6 8. 0-0 0-0 9. c4 Re8 10. Ne5 Bxe2 11. Qxe2 Qc7 12. f4 Ne4 13. Nxe4 dxe4 14. c5 Bf8 15. g4 f6 16. Nxd7 Qxd7 17. f5 Rad8 18. Kh1 Qf7 19. Rf4 exf5 20. gxf5 Rd5 21. Qg2 Qh5 22. Raf1 Re7 23. Bc3 Re8 24. Rxe4 Rxe4 25. Qxe4 Rd8 26. Qf3 Qf7 27. Be1 Re8 28. Bg3 Qd7 29. Kg2 b6 30. cxb6 axb6 31. Rc1 c5 32. d5 Bd6 33. e4 Bxg3 34. hxg3 Re5 35. a4 Qe7 36. Rc4 g6 37. Qg4 Kf7 38. fxg6+ hxg6 39. b4 Rg5 40. Qf4 Re5 41. bxc5 bxc5 42. g4 Kg7 43. Kf3 Qb7 44. Qe3 Qb1 45. Rc1 Qb4 46. Rxc5 Qxa4 47. Rc7+ Kg8 48. Qd3 Qa1 1/2-1/2

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.30"]
[Round "5"]
[White "Perez, William"]
[Black "Moreno Marino, Juan Nicolas"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "1934"]
[BlackElo "1898"]
[PlyCount "41"]
[EventDate "2023.06.28"]
[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. c4 c6 2. e4 d5 3. cxd5 cxd5 4. exd5 Nf6 5. Qa4+ Nbd7 6. Nc3 g6 7. Bc4 Bg7 8. d3 0-0 9. Nf3 Nb6 10. Qb3 Bg4 11. Ne5 Qc7 12. Nxg4 Nxg4 13. h3 Qe5+ 14. Ne2 Nh6 15. Bf4 Qxb2 16. Qxb2 Bxb2 17. Rb1 Bg7 18. g4 Rac8 19. 0-0 Rfd8 20. Rfc1 Nxd5 21. Bxd5 1-0

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.29"]
[Round "2"]
[White "Molina Ballesteros, Juan Sebastian"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "1780"]
[BlackElo "1934"]
[PlyCount "71"]
[EventDate "2023.06.28"]
[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. Nc3 d5 3. Nf3 Bg4 4. d4 dxe4 5. Nxe4 e6 6. Bf4 Be7 7. c3 Nf6 8. Nxf6+ gxf6 9. h3 Bh5 10. Qb3 Qc8 11. Be2 a5 12. a4 Na6 13. g4 Bg6 14. Nd2 Nc7 15. Nc4 Nd5 16. Bf3 Nxf4 17. Nb6 Qb8 18. Nxa8 Qxa8 19. c4 Bb4+ 20. Kf1 Bd3+ 21. Kg1 Qa6 22. Rc1 Bd2 23. Rd1 Bxc4 24. Qc2 Bb4 25. Qe4 Bd6 26. h4 f5 27. Qe3 fxg4 28. Be4 h5 29. b3 Be2 30. Rd2 Kf8 31. Qc3 Rg8 32. d5 Bb4 33. Qf6 Bxd2 34. d6 Bb4 35. d7 Be7 36. Qh6+ 1/2-1/2

[Event "Manizales op 28th"]
[Site "Manizales"]
[Date "2023.01.09"]
[Round "8"]
[White "Perez, William"]
[Black "Molano, Walter Rene"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "1910"]
[BlackElo "1662"]
[PlyCount "65"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 Bc5 5. e3 d6 6. Nge2 h5 7. d4 exd4 8. exd4 Bb6 9. Bg5 Bg4 10. Qd2 Ba5 11. 0-0-0 Qe7 12. Rhe1 0-0-0 13. Qf4 Qd7 14. Rd2 Rde8 15. Bxf6 gxf6 16. Qxf6 Bxc3 17. bxc3 Na5 18. Rb2 Qa4 19. Bd5 c6 20. Bxf7 Rhf8 21. Qg7 Rxf7 22. Qxf7 Bd7 23. Kb1 Nxc4 24. Rb4 Na3+ 25. Kb2 Qa6 26. Qxh5 Nc4+ 27. Ka1 Na3 28. Rb2 Qd3 29. Rc1 c5 30. dxc5 Bb5 31. c4 Ba4 32. cxd6 Nxc4 33. Qc5+ 1-0

[Event "Manizales op 28th"]
[Site "Manizales"]
[Date "2023.01.08"]
[Round "7"]
[White "Munoz Galvez, Jhon Edison"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2292"]
[BlackElo "1910"]
[PlyCount "49"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 a5 5. Bg2 d5 6. Nf3 0-0 7. Qc2 Na6 8. 0-0 c6 9. Bg5 Be7 10. Nbd2 h6 11. Bxf6 Bxf6 12. Rfd1 Nb4 13. Qb1 dxc4 14. a3 Nd5 15. Nxc4 b5 16. Nce5 Bb7 17. Qc2 Rc8 18. Rac1 Be7 19. Nd3 Qb6 20. Nc5 Rfd8 21. e3 a4 22. Ne5 Ba8 23. Qe2 Qc7 24. Bh3 Qd6 25. Nxf7 1-0

[Event "Manizales op 28th"]
[Site "Manizales"]
[Date "2023.01.08"]
[Round "6"]
[White "Perez, William"]
[Black "Mateus, Martha"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "1910"]
[BlackElo "2005"]
[PlyCount "124"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. Nf3 c5 2. b3 d5 3. Bb2 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. e3 e6 7. Nd2 Be7 8. Be2 0-0 9. 0-0 Nxd4 10. Bxd4 b6 11. Bd3 Bc5 12. Bb2 Re8 13. Nf3 Bb7 14. Ne5 Qc7 15. Qe2 Red8 16. Rad1 Bd6 17. f4 Ne4 18. Bxe4 dxe4 19. a3 f6 20. Ng4 Qe7 21. a4 Rac8 22. c4 Bc5 23. Nf2 Rxd1 24. Rxd1 Rd8 25. Rxd8+ Qxd8 26. Qd1 Qxd1+ 27. Nxd1 Kf7 28. Kf2 Bb4 29. g4 g6 30. Bc3 Bxc3 31. Nxc3 Ke7 32. Ke2 a6 33. Kd2 Kd6 34. Ne2 f5 35. g5 e5 36. Kc3 Bc6 37. Kb4 a5+ 38. Ka3 Bd7 39. b4 axb4+ 40. Kxb4 exf4 41. Nxf4 Bc6 42. h4 Ke5 43. a5 bxa5+ 44. Kxa5 Kd6 45. Kb6 Ba4 46. c5+ Kd7 47. h5 gxh5 48. Nxh5 Ke6 49. Nf4+ Kd7 50. Ne2 Ke6 51. c6 Kf7 52. c7 Bd7 53. Nf4 Kg7 54. Kb7 h6 55. gxh6+ Kxh6 56. c8Q Bxc8+ 57. Kxc8 Kg5 58. Kd7 Kg4 59. Ke6 Kf3 60. Nd5 f4 61. exf4 e3 62. Nxe3 Kxf4 1/2-1/2

[Event "Manizales op 28th"]
[Site "Manizales"]
[Date "2023.01.07"]
[Round "5"]
[White "Ossa, Orlando Jose"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2193"]
[BlackElo "1910"]
[PlyCount "102"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Nc3 Nxd5 6. d4 Nc6 7. Nf3 Bg4 8. Qb3 Nb6 9. Ne5 Be6 10. Nxc6 bxc6 11. Qb4 g6 12. Qc5 Qd6 13. Ba6 Bc8 14. Be2 Bg7 15. Bf3 Bd7 16. Be3 Qxc5 17. dxc5 Nc4 18. 0-0-0 Nxe3 19. fxe3 Rc8 20. Rd3 Bf5 21. e4 Be6 22. b3 h5 23. Ne2 Rd8 24. Rhd1 Rxd3 25. Rxd3 0-0 26. Rd1 Rb8 27. Nd4 Bxd4 28. Rxd4 Rb5 29. b4 Bxa2 30. Kb2 Be6 31. e5 Bd5 32. Bxd5 cxd5 33. c6 Rb6 34. Rxd5 Rxc6 35. Rd7 a6 36. Rxe7 Rb6 37. Ka3 Kf8 38. Ra7 g5 39. Ra8+ Ke7 40. Rg8 f6 41. Rg6 Rb5 42. exf6+ Kf7 43. Rh6 h4 44. Ka4 Rf5 45. Rh7+ Kxf6 46. Rh6+ Kf7 47. Rxa6 Rf2 48. b5 Rxg2 49. b6 Rxh2 50. Kb3 Rh3+ 51. Kb4 Rh1 0-1

[Event "Manizales op 28th"]
[Site "Manizales"]
[Date "2023.01.07"]
[Round "4"]
[White "Perez, William"]
[Black "Martinez, Lorenzo Julio"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1910"]
[BlackElo "1600"]
[PlyCount "53"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. Nc3 Bb4 5. a3 Ba5 6. b4 Bb6 7. Na4 Nbd7 8. e3 0-0 9. c4 c6 10. Nxb6 axb6 11. Bd3 Re8 12. 0-0 Nf8 13. h3 Ng6 14. Bh2 dxc4 15. Bxc4 b5 16. Bd3 b6 17. Qc2 Bb7 18. Ne5 Qd5 19. f4 c5 20. dxc5 bxc5 21. Rfd1 Nxe5 22. fxe5 Qxg2+ 23. Qxg2 Bxg2 24. exf6 Bxh3 25. bxc5 gxf6 26. Bxb5 Reb8 27. Bxb8 1-0

[Event "Manizales op 28th"]
[Site "Manizales"]
[Date "2023.01.06"]
[Round "2"]
[White "Perez, William"]
[Black "Escobar Forero, Alder"]
[Result "0-1"]
[ECO "D34"]
[WhiteElo "1910"]
[BlackElo "2459"]
[PlyCount "58"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. c4 e6 2. g3 d5 3. Bg2 c5 4. cxd5 exd5 5. d4 Nf6 6. Nc3 h6 7. Nf3 Nc6 8. 0-0 Be7 9. Bf4 0-0 10. Rc1 c4 11. b3 Ba3 12. Rb1 Qa5 13. Qc2 Nb4 14. Qd2 Bf5 15. Rbd1 Rac8 16. bxc4 Rxc4 17. Ne5 Rcc8 18. h3 Bh7 19. g4 Rfe8 20. g5 hxg5 21. Bxg5 Ne4 22. Nxe4 dxe4 23. Bh4 f6 24. Ng4 Rc2 25. Qe3 Nd5 26. Qb3 Rb2 27. Qc4 Qb5 28. Qxb5 Rxb5 29. Rb1 Bb2 0-1

[Event "Manizales op 28th"]
[Site "Manizales"]
[Date "2023.01.06"]
[Round "3"]
[White "Trujillo, Luis Angel"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "A49"]
[WhiteElo "1632"]
[BlackElo "1910"]
[PlyCount "88"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 c5 5. e3 d5 6. 0-0 0-0 7. Nc3 cxd4 8. exd4 Bf5 9. Re1 Nc6 10. a3 Ne4 11. Ne2 Rc8 12. c3 Na5 13. Nf4 Nc4 14. Qb3 e6 15. Qd1 h5 16. h3 Qb6 17. Qe2 Na5 18. Nh2 Nb3 19. Ra2 Nxc1 20. Rxc1 Bh6 21. Raa1 h4 22. Bxe4 Bxe4 23. Ng4 Bg5 24. Rf1 Kg7 25. f3 Bf5 26. Kg2 hxg3 27. Kxg3 f6 28. Ng2 Rh8 29. h4 Qd6+ 30. f4 Bh6 31. Nxh6 Rxh6 32. Kf2 Rch8 33. Kg3 Be4 34. Rh1 g5 35. h5 gxf4+ 36. Nxf4 e5 37. dxe5 fxe5 38. Ng2 Rg8 39. Rag1 Qf6 40. Rh4 Kh7+ 41. Rg4 Rf8 42. Ne3 Rxh5 43. Rxe4 Rg8+ 44. Rg4 Qf4+ 0-1

[Event "Manizales op 28th"]
[Site "Manizales"]
[Date "2023.01.05"]
[Round "1"]
[White "Aristizabal Valencia, Matias"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B27"]
[WhiteElo "1524"]
[BlackElo "1910"]
[PlyCount "72"]
[EventDate "2023.01.05"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. c3 d5 4. Bd3 Bg7 5. Bc2 dxe4 6. Bxe4 Nf6 7. Bc2 Nc6 8. d3 0-0 9. Bg5 Qd5 10. 0-0 Bg4 11. Nbd2 Ne5 12. Bxf6 Bxf6 13. c4 Qd7 14. Qe2 Nxf3+ 15. Nxf3 Bxb2 16. Rab1 Bf6 17. Qe4 b6 18. Ne5 Bxe5 19. Qxe5 f6 20. Qd5+ Qxd5 21. cxd5 Rad8 22. Rfe1 Kf7 23. Bb3 Rd6 24. Re4 Bf5 25. Re3 Rc8 26. Rc1 b5 27. h3 h5 28. Rc3 Rc7 29. a3 a5 30. f3 h4 31. f4 Bc8 32. Kf2 Bb7 33. g4 hxg3+ 34. Rxg3 a4 35. Ba2 Bxd5 36. Bxd5+ Rxd5 0-1

[Event "Sabaneta op-B 1st"]
[Site "Sabaneta"]
[Date "2022.11.30"]
[Round "8"]
[White "Ruiz Jaraba, Valentina Sofia"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "1797"]
[BlackElo "1924"]
[PlyCount "88"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c6 2. c4 d5 3. cxd5 cxd5 4. exd5 Nf6 5. Qa4+ Nbd7 6. Nc3 g6 7. Bc4 Bg7 8. Nf3 a6 9. d3 0-0 10. Qa3 b6 11. 0-0 Bb7 12. Re1 Re8 13. Bf4 b5 14. Bb3 Nb6 15. d6 Bxf3 16. dxe7 Qd4 17. gxf3 Qxf4 18. Qc5 Nfd7 19. Qe3 Be5 20. Qxf4 Bxf4 21. Nd5 Nxd5 22. Bxd5 Ra7 23. d4 Nf6 24. Bc6 Rexe7 25. d5 Kf8 26. a3 Bd6 27. b4 Nh5 28. Re3 a5 29. Rd1 Nf4 30. Bxb5 axb4 31. axb4 Rab7 32. Bc6 Rxb4 33. Kf1 Rb2 34. Rde1 Bc5 35. d6 Bxd6 36. Rd1 Bc5 37. Rxe7 Rxf2+ 38. Kg1 Rd2+ 39. Kf1 Rf2+ 40. Kg1 Rd2+ 41. Kf1 Rf2+ 42. Kg1 Kxe7 43. Ba4 Ra2+ 44. Kh1 Rxa4 0-1

[Event "Sabaneta op-B 1st"]
[Site "Sabaneta"]
[Date "2022.11.29"]
[Round "6"]
[White "Cabrales Almanza, Josue Ricardo"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "1724"]
[BlackElo "1924"]
[PlyCount "83"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nc6 5. 0-0 e5 6. Nc3 Nge7 7. e4 0-0 8. d3 d6 9. Ne1 h6 10. Nc2 f5 11. f4 a5 12. Rb1 Kh7 13. a3 Be6 14. Nd5 fxe4 15. dxe4 Nd4 16. Nxd4 exd4 17. Nxe7 Qxe7 18. Qd3 Kh8 19. f5 Bf7 20. Bd2 a4 21. Rf2 g5 22. b3 b5 23. e5 Bxe5 24. Bxa8 Rxa8 25. Qf3 Rc8 26. bxa4 bxc4 27. Rb7 Qf8 28. a5 c3 29. Bc1 Be8 30. Rb6 Bf7 31. a6 c4 32. Qb7 d3 33. a7 Bd4 34. Qxc8 Qxc8 35. Rb8 Bxa7 36. Rxc8+ Kg7 37. Kf1 d2 38. Bxd2 cxd2 39. Rxd2 d5 40. Rc7 Be3 41. Rxd5 c3 42. Rdd7 1-0

[Event "Sabaneta op-B 1st"]
[Site "Sabaneta"]
[Date "2022.11.29"]
[Round "7"]
[White "Perez, William"]
[Black "Bohorquez Gutierrez, Daniel"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1924"]
[BlackElo "1600"]
[PlyCount "69"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 c5 5. e3 0-0 6. Nge2 d6 7. 0-0 Qc7 8. b3 Bd7 9. d4 a6 10. Bb2 Rd8 11. a4 Nc6 12. Nf4 e6 13. d5 Ne7 14. dxe6 fxe6 15. h4 Rab8 16. a5 Kf7 17. Nh3 h6 18. Nf4 Bc6 19. e4 e5 20. Nh3 Bd7 21. f4 Bg4 22. Qc1 Kg8 23. fxe5 dxe5 24. Nf2 Be6 25. Nd5 Bxd5 26. cxd5 Ne8 27. Nd3 Rbc8 28. Bh3 Nd6 29. Be6+ Kh7 30. Bxc8 Rxc8 31. Bxe5 Qd7 32. Bxg7 Kxg7 33. Qf4 c4 34. bxc4 Rxc4 35. Ne5 1-0

[Event "Sabaneta op-B 1st"]
[Site "Sabaneta"]
[Date "2022.11.27"]
[Round "4"]
[White "Idarraga, Oscar Alonso"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "1883"]
[BlackElo "1924"]
[PlyCount "112"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c6 2. d3 d5 3. Nd2 g6 4. g3 Bg7 5. Bg2 e5 6. Ngf3 Ne7 7. 0-0 0-0 8. Re1 Qc7 9. Qe2 Nd7 10. Nf1 h6 11. h4 f5 12. exf5 gxf5 13. N1h2 e4 14. Bh3 Rf7 15. Nd2 Nf6 16. Ndf1 Bd7 17. Bf4 Qb6 18. h5 Re8 19. Ne3 c5 20. Be5 Qe6 21. d4 cxd4 22. Bxd4 Nc6 23. Bc3 Ne7 24. Rad1 Rd8 25. Bb4 Nc6 26. Bxf5 Qe5 27. Bxd7 Rdxd7 28. Bc3 d4 29. Neg4 Nxg4 30. Nxg4 Qe6 31. Bd2 Rde7 32. Bf4 Kh7 33. a3 Qd5 34. Qd2 Qxh5 35. Nh2 Qh3 36. Qe2 h5 37. Qf1 Qf5 38. Qg2 h4 39. Nf1 hxg3 40. fxg3 Rf6 41. Nd2 Rfe6 42. Rf1 Qc5 43. Nb3 Qb6 44. Qf2 Kg8 45. Kg2 a5 46. Bg5 e3 47. Qe2 Re8 48. Rh1 Rf8 49. Rdf1 Rxf1 50. Rxf1 Ne5 51. Qh5 Qc6+ 52. Kg1 Qe4 53. Bf4 e2 54. Re1 Nf3+ 55. Kf2 Nxe1 56. Kxe1 Qg2 0-1

[Event "Sabaneta op-B 1st"]
[Site "Sabaneta"]
[Date "2022.11.27"]
[Round "3"]
[White "Perez, William"]
[Black "Hernandez, Stefano"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1924"]
[BlackElo "1765"]
[PlyCount "106"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. Nf3 c5 2. b3 Nf6 3. Bb2 g6 4. c4 Bg7 5. g3 b6 6. Bg2 Bb7 7. 0-0 0-0 8. d3 e6 9. Nbd2 Qe7 10. d4 cxd4 11. Nxd4 Bxg2 12. Kxg2 Nc6 13. Nc2 Rfd8 14. e3 d5 15. Qe2 dxc4 16. Nxc4 Nd5 17. e4 Bxb2 18. Nxb2 Nc3 19. Qe3 Qc5 20. Qxc5 bxc5 21. f3 Rd2+ 22. Rf2 Rad8 23. Raf1 Nxa2 24. Na4 Rxf2+ 25. Rxf2 Nc1 26. Nxc5 Nd3 27. Nxd3 Rxd3 28. Na1 Kf8 29. f4 Ke7 30. Rc2 Kd6 31. e5+ Kd5 32. Rc4 Rd2+ 33. Kh3 Rb2 34. Nc2 Rxb3 35. Rxc6 Kxc6 36. Nd4+ Kc5 37. Nxb3+ Kb4 38. Nd4 Kc5 39. Nc2 a5 40. Kg4 Kc4 41. Kf3 Kc3 42. Na3 Kb3 43. Nb1 Kc2 44. Na3+ Kb3 45. Nb5 a4 46. Ke3 Kc4 47. Nd4 a3 48. Nc2 a2 49. Kd2 Kb3 50. Kd3 Kb2 51. Na1 Kc1 52. Nb3+ Kd1 53. h4 h5 1/2-1/2

[Event "Sabaneta op-B 1st"]
[Site "Sabaneta"]
[Date "2022.11.26"]
[Round "2"]
[White "Gallon Ramirez, Tomas"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "D41"]
[WhiteElo "1540"]
[BlackElo "1924"]
[PlyCount "94"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 c5 5. Bg2 Nc6 6. 0-0 Be7 7. e3 0-0 8. cxd5 Nxd5 9. Nc3 Nf6 10. dxc5 Qa5 11. Bd2 Rd8 12. Qe2 Qxc5 13. a3 a6 14. Rac1 Qh5 15. Rfd1 e5 16. Nh4 Bg4 17. Bf3 Na5 18. Ne4 Bxf3 19. Nxf6+ Bxf6 20. Qxf3 Qxf3 21. Nxf3 Nb3 22. Rc3 e4 23. Rxb3 exf3 24. Rxb7 Rac8 25. Kf1 Rc2 26. Ke1 Bxb2 27. Rb1 Bxa3 28. Ba5 Rdc8 29. R7b3 Bf8 30. e4 Re2+ 31. Kf1 Rxe4 32. Rxf3 Ra4 33. Bd2 f6 34. Rf5 Rc2 35. Be3 Kf7 36. Rd5 Bb4 37. Rd7+ Kg6 38. Rb7 a5 39. Rb5 h5 40. h4 Raa2 41. Bb6 Bc3 42. Be3 a4 43. g4 hxg4 44. h5+ Kh7 45. Rb7 Rab2 46. h6 Rxb1+ 47. Rxb1 gxh6 0-1

[Event "Sabaneta op-B 1st"]
[Site "Sabaneta"]
[Date "2022.11.25"]
[Round "1"]
[White "Perez, William"]
[Black "Meneses Arteaga, Javier Mauricio"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1924"]
[BlackElo "1300"]
[PlyCount "65"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 d5 3. Bf4 c5 4. e3 Nc6 5. c3 Nf6 6. Nbd2 Be7 7. Bd3 Qb6 8. Rb1 Bd7 9. 0-0 0-0 10. Ne5 Nxe5 11. dxe5 Ne8 12. Qh5 g6 13. Qh6 Ng7 14. Nf3 Nf5 15. Bxf5 exf5 16. Ng5 Bxg5 17. Bxg5 f6 18. Bxf6 Rxf6 19. exf6 Qxf6 20. Rfd1 Bc6 21. Rd2 Qe5 22. Rbd1 Qe4 23. f3 Qe6 24. Kf2 Re8 25. h4 b6 26. h5 gxh5 27. Qxe6+ Rxe6 28. Rh1 Rh6 29. Kg3 Kg7 30. Kf4 Kg6 31. Rhd1 Bb7 32. c4 Kf7 33. cxd5 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.23"]
[Round "9"]
[White "Perez, William"]
[Black "Ortiz Monsalve, Sebastian"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "1944"]
[BlackElo "1723"]
[PlyCount "71"]
[EventDate "2022.10.19"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 b4 5. e4 d6 6. f4 Nbd7 7. Nf3 Qc7 8. Bd3 g6 9. 0-0 Bg7 10. Re1 0-0 11. Nbd2 a5 12. a4 Re8 13. Nf1 e6 14. dxe6 fxe6 15. e5 dxe5 16. fxe5 Ng4 17. Bxg6 Ndxe5 18. Bxe8 Bb7 19. Nxe5 Bxe5 20. Bh5 b3 21. Qd2 Bd4+ 22. Qxd4 cxd4 23. Bxg4 Kh8 24. Bxe6 Rf8 25. Ng3 h5 26. Bd2 h4 27. Ne2 Qb6 28. Nf4 Kh7 29. Re5 h3 30. Bxh3 d3+ 31. c5 Qf6 32. Rae1 Rf7 33. Rh5+ Kg8 34. Re8+ Rf8 35. Rxf8+ Kxf8 36. Rf5 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.23"]
[Round "10"]
[White "Velez Alvarez, Laura Camila"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "1798"]
[BlackElo "1944"]
[PlyCount "36"]
[EventDate "2022.10.19"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Nf3 Nd7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. Qe2 Be7 13. Ne5 Qb6 14. 0-0-0 Rd8 15. Qc4 0-0 16. f4 Nd5 17. f5 Nxe5 18. dxe5 Ne3 0-1

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.22"]
[Round "7"]
[White "Perez, William"]
[Black "Ospina Betancur, Santiago"]
[Result "0-1"]
[ECO "A87"]
[WhiteElo "1944"]
[BlackElo "1716"]
[PlyCount "52"]
[EventDate "2022.10.19"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 f5 2. b3 Nf6 3. Bb2 g6 4. c4 Bg7 5. g3 d6 6. d4 0-0 7. Bg2 Qe8 8. d5 c6 9. 0-0 e5 10. dxc6 Nxc6 11. Qxd6 Ne4 12. Qd1 Be6 13. Nc3 Nxc3 14. Bxc3 e4 15. Bxg7 exf3 16. Bxf8 fxg2 17. Kxg2 Qxf8 18. e3 Ne5 19. Qd4 Qf6 20. Rad1 Bd7 21. f3 Bc6 22. b4 b6 23. c5 b5 24. Qc3 Rc8 25. Rd6 Qxd6 26. e4 Qe6 0-1

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.22"]
[Round "8"]
[White "Ruiz Agudelo, Jeronimo"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "1718"]
[BlackElo "1944"]
[PlyCount "112"]
[EventDate "2022.10.19"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. 0-0-0 Be7 13. Qe2 Qb6 14. Ne5 Qb5 15. c4 Qa6 16. Kb1 b5 17. Rhe1 0-0 18. Nxd7 Nxd7 19. d5 cxd5 20. cxd5 Bc5 21. dxe6 fxe6 22. Qxe6+ Qxe6 23. Rxe6 Bxf2 24. Rg6 Ne5 25. Ne4 Nxg6 26. hxg6 Rad8 27. Rc1 Bb6 28. Bc3 Rf4 29. Ng3 Bf2 30. Nh5 Rg4 31. Bf6 Re8 32. Bxg7 Rxg6 33. Nf6+ Kxg7 34. Nxe8+ Kf8 35. Rc8 Ke7 36. Nc7 a6 37. Re8+ Kd7 38. Re2 Rxg2 39. Nxa6 h5 40. Kc2 Rh2 41. Nc5+ Kc6 42. Ne4 Bg1 43. Rxh2 Bxh2 44. b3 b4 45. Kd3 h4 46. Kc4 Bd6 47. Ng5 Bf8 48. Nh3 Be7 49. Nf4 Bg5 50. Nh3 Bd2 51. Kd4 Kd6 52. Ke4 Ke6 53. Nf2 Kf6 54. Kf3 Kf5 55. Nd3 Bc3 56. Nxb4 Bxb4 1/2-1/2

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.21"]
[Round "6"]
[White "Pazos Gambarrotti, Plinio Efrain"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2088"]
[BlackElo "1944"]
[PlyCount "137"]
[EventDate "2022.10.19"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Bg7 6. e4 Nxc3 7. Bxc3 Nc6 8. d5 Bxc3+ 9. bxc3 Na5 10. Qd2 0-0 11. Nf3 e6 12. Be2 exd5 13. exd5 Bg4 14. 0-0 Bxf3 15. Bxf3 Qd6 16. Rac1 b6 17. h4 Rad8 18. h5 Nc4 19. Qe2 Ne5 20. Be4 Rfe8 21. g3 Nd7 22. Qc2 Nf6 23. Bf3 Nxd5 24. Rfd1 Qe5 25. Rd4 Nf6 26. hxg6 hxg6 27. Bc6 Rf8 28. Rcd1 Rd6 29. Qa4 a5 30. Rxd6 cxd6 31. c4 Kg7 32. Qb3 Qc5 33. Bf3 Re8 34. Qd3 Re6 35. Rb1 Nd7 36. Qc3+ Rf6 37. Rb5 Qc7 38. Bd5 Kg8 39. Kg2 Ne5 40. Qe3 Ng4 41. Qe8+ Kg7 42. f4 Nh6 43. Qe3 Nf5 44. Qc3 Qe7 45. Kf3 Kh7 46. Rxb6 Nxg3 47. Kxg3 Rxf4 48. Kxf4 Qh4+ 49. Ke3 Qg3+ 50. Kd2 Qf2+ 51. Kd1 Qxb6 52. Kc2 Qf2+ 53. Kb3 a4+ 54. Ka3 f5 55. Qb4 Qe3+ 56. Kxa4 Qe5 57. Kb5 f4 58. Qb3 Qe8+ 59. Kb6 Qe5 60. a4 g5 61. Qh3+ Kg7 62. Qd7+ Kh8 63. Qf7 Qd4+ 64. Ka6 Qg7 65. Qh5+ Qh7 66. Qxg5 f3 67. Qf6+ Qg7 68. Qd8+ Kh7 69. Be4+ 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.20"]
[Round "4"]
[White "Perez, William"]
[Black "Ramirez, Benjamin Dario"]
[Result "0-1"]
[ECO "A39"]
[WhiteElo "1944"]
[BlackElo "2173"]
[PlyCount "70"]
[EventDate "2022.10.19"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Nf3 Nf6 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 Qa5 9. Be3 Ng4 10. Nxc6 dxc6 11. Bd2 Qh5 12. h4 Be6 13. Qb3 Rad8 14. Ne4 b5 15. Bb4 Bxc4 16. Qa3 Rfe8 17. Bf3 Bd5 18. Rad1 Bxe4 19. Bxe4 Rxd1 20. Rxd1 Ne5 21. Kf1 Qg4 22. Bg2 Qf5 23. b3 Ng4 24. Bc5 a5 25. Bb6 Bh6 26. Qc5 Ne3+ 27. Qxe3 Bxe3 28. Bxe3 Qc2 29. Rc1 Rd8 30. Ke1 Qxa2 31. Bxc6 Qxb3 32. Bh6 a4 33. e4 a3 34. Bd5 Qb2 35. Rd1 a2 0-1

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.19"]
[Round "2"]
[White "Diaz Gonzalez, Ana Sofia"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1356"]
[BlackElo "1944"]
[PlyCount "98"]
[EventDate "2022.10.19"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. c3 d5 4. exd5 Qxd5 5. d4 Nc6 6. Be3 cxd4 7. Nxd4 Nf6 8. h3 a6 9. Na3 e5 10. Nxc6 Bxa3 11. Qxd5 Nxd5 12. bxa3 Nxe3 13. fxe3 bxc6 14. Rb1 Be6 15. Bxa6 Kd7 16. Rb7+ Kd6 17. Be2 Rxa3 18. c4 Rxa2 19. Kf2 Bxc4 20. Re1 Rha8 21. Kf1 Bd5 22. e4 Bxe4 23. Rd1+ Bd5 24. Rxf7 Ra1 25. Rxh7 Rxd1+ 26. Bxd1 Ra1 27. Ke2 Bxg2 28. Bc2 Ra2 29. Kd3 Bxh3 30. Bb3 Ra3 31. Kc2 Bf5+ 32. Kb2 Ra8 33. Kc3 Re8 34. Kd2 Re7 35. Rh4 e4 36. Ke3 Ke5 37. Rh2 Ra7 38. Bg8 Ra3+ 39. Kd2 Kd4 40. Rh4 c5 41. Kc2 c4 42. Kb2 Rg3 43. Bf7 c3+ 44. Kc2 Rg2+ 45. Kc1 Kd3 46. Rh1 e3 47. Be8 Rc2+ 48. Kb1 Kd2 49. Bc6 Rc1+ 0-1

[Event "COL-ch"]
[Site "Boyaca"]
[Date "2022.08.21"]
[Round "8"]
[White "Carrillo Parra, Miguel Alfredo"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "2191"]
[BlackElo "1973"]
[PlyCount "43"]
[EventDate "2022.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. b4 a5 5. b5 c6 6. Bb2 d5 7. e3 0-0 8. Nbd2 a4 9. Ba3 Nbd7 10. Rc1 Re8 11. cxd5 cxd5 12. Be2 e5 13. Nxe5 Nxe5 14. dxe5 Rxe5 15. 0-0 Bf5 16. Nf3 Re8 17. Nd4 Bd7 18. Qc2 Qb8 19. Qc7 Rc8 20. Qb6 Ng4 21. Bd6 Qa7 22. Rxc8+ 1-0

[Event "COL-ch"]
[Site "Boyaca"]
[Date "2022.08.21"]
[Round "9"]
[White "Perez, William"]
[Black "Varela Sanchez, David Yoel"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1973"]
[BlackElo "1320"]
[PlyCount "101"]
[EventDate "2022.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nc6 3. Bb2 Nf6 4. g3 Bf5 5. Bg2 Qd7 6. h3 h5 7. d3 0-0-0 8. a3 d4 9. c3 e5 10. cxd4 Nxd4 11. Nxe5 Qe6 12. Nc4 Bc5 13. Nc3 Nf3+ 14. Kf1 Ng5 15. Na4 Bb6 16. Naxb6+ axb6 17. h4 Nge4 18. Qc2 Nc5 19. Rd1 Rhe8 20. Ne3 Ng4 21. Nxf5 Qxf5 22. Bf3 g6 23. b4 Ne6 24. Rc1 Qb5 25. Qc4 Qxc4 26. Rxc4 b5 27. Rc2 Nd4 28. Bxg4+ hxg4 29. Bxd4 Rxd4 30. h5 Rh8 31. Rc5 c6 32. Kg2 gxh5 33. Rhxh5 Rdd8 34. Rxh8 Rxh8 35. Rf5 Re8 36. e3 Kc7 37. Rxf7+ Kb6 38. Rf4 Ra8 39. Rxg4 Rxa3 40. Rd4 Rc3 41. f4 c5 42. bxc5+ Kxc5 43. f5 b4 44. f6 Kb5 45. Rf4 Rc8 46. g4 b3 47. Rf1 Ka4 48. g5 b2 49. Rb1 Ka3 50. g6 Rc6 51. g7 1-0

[Event "COL-ch"]
[Site "Boyaca"]
[Date "2022.08.20"]
[Round "7"]
[White "Perez, William"]
[Black "Negron Lizarazo, Juan Sebastian"]
[Result "1-0"]
[ECO "A12"]
[WhiteElo "1973"]
[BlackElo "1456"]
[PlyCount "83"]
[EventDate "2022.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. Nf3 c6 2. c4 d5 3. b3 Bf5 4. Bb2 Nd7 5. g3 Ngf6 6. Bg2 e6 7. 0-0 Be7 8. d3 0-0 9. Nbd2 Qc7 10. Rc1 Rfd8 11. Rc2 Nf8 12. Qa1 c5 13. cxd5 exd5 14. Rfc1 b6 15. b4 Ne6 16. bxc5 bxc5 17. Nd4 Bg6 18. Nxe6 fxe6 19. Nb3 c4 20. Nd4 Qd6 21. Bh3 e5 22. Ne6 Rdc8 23. Bxe5 Qd7 24. Nf4 Bf5 25. Bxf5 Qxf5 26. dxc4 g5 27. Bxf6 Bxf6 28. Nxd5 Rc6 29. Qxf6 Qxf6 30. Nxf6+ Rxf6 31. c5 Rc6 32. Rd2 Rac8 33. Rd5 h6 34. f4 gxf4 35. gxf4 Re8 36. Kf2 Rce6 37. Rc2 Re4 38. f5 Kf7 39. c6 Rc8 40. Kf3 Re7 41. Rd7 Ke8 42. Rxe7+ 1-0

[Event "COL-ch"]
[Site "Boyaca"]
[Date "2022.08.19"]
[Round "5"]
[White "Dabraccio, Guillermo"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1567"]
[BlackElo "1973"]
[PlyCount "60"]
[EventDate "2022.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 e6 4. Nb5 Na6 5. a3 c6 6. Nc3 c5 7. e3 Qa5 8. Bb5+ Bd7 9. Bxd7+ Nxd7 10. Nge2 Be7 11. 0-0 cxd4 12. exd4 Rc8 13. Qd3 Nab8 14. Qg3 0-0 15. Bh6 Bf6 16. Rad1 Nc6 17. f4 Ne7 18. Bg5 Nf5 19. Qh3 Rc4 20. Bxf6 Nxf6 21. Rf3 Qb6 22. b3 Rc6 23. g4 Ne7 24. Qh4 Rfc8 25. f5 exf5 26. gxf5 Qd8 27. Rdd3 Qd7 28. Ng3 Ne8 29. Rde3 Kf8 30. Qxh7 Rh6 0-1

[Event "COL-ch"]
[Site "Boyaca"]
[Date "2022.08.19"]
[Round "6"]
[White "Perez, William"]
[Black "Gomez Viana, Duvan Leandro"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "1973"]
[BlackElo "1757"]
[PlyCount "97"]
[EventDate "2022.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. Nf3 Nc6 7. d3 Be7 8. a3 0-0 9. b4 a6 10. Bb2 Be6 11. 0-0 Qd7 12. Re1 f5 13. Rc1 Rad8 14. b5 axb5 15. Nxb5 e4 16. Nfd4 Nxd4 17. Nxd4 Bd5 18. dxe4 fxe4 19. Qc2 c5 20. Nb3 Qf5 21. e3 Nc4 22. Ba1 b6 23. Red1 b5 24. Rf1 Ra8 25. Bb2 Nxb2 26. Qxb2 Bxb3 27. Qxb3+ c4 28. Qc2 Rxa3 29. Bxe4 Qh5 30. Rfd1 Rb8 31. Rd5 Qh6 32. Rb1 Qa6 33. Bxh7+ Kf8 34. Qf5+ Bf6 35. Bg6 Ra1 36. Rxa1 Qxa1+ 37. Kg2 Qa8 38. e4 Qc6 39. Rd7 Rb7 40. Rd8+ Ke7 41. Re8+ Kd6 42. Re6+ Kc7 43. Rxc6+ Kxc6 44. Qd5+ Kb6 45. e5 Be7 46. Be8 Ka6 47. Bc6 Rb6 48. Bd7 c3 49. Qa8# 1-0

[Event "COL-ch"]
[Site "Boyaca"]
[Date "2022.08.18"]
[Round "3"]
[White "Perez, William"]
[Black "Torres, Juan Camilo"]
[Result "0-1"]
[ECO "A26"]
[WhiteElo "1973"]
[BlackElo "2265"]
[PlyCount "82"]
[EventDate "2022.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nge7 6. 0-0 d6 7. d3 0-0 8. Rb1 a5 9. a3 Bf5 10. h3 h6 11. Bd2 Qd7 12. Kh2 Be6 13. b4 axb4 14. axb4 f5 15. Qc1 Kh7 16. b5 Nd8 17. Ne1 c6 18. Nc2 d5 19. bxc6 bxc6 20. cxd5 cxd5 21. Qb2 Ndc6 22. Ra1 Rfb8 23. Qc1 e4 24. Rxa8 Rxa8 25. dxe4 fxe4 26. f3 e3 27. Be1 d4 28. Ne4 Ra2 29. f4 Qa7 30. g4 Qa4 31. Nxe3 dxe3 32. Qxe3 Qb3 33. Nc3 Rc2 34. Rf3 Nd4 35. Rg3 Nef5 36. gxf5 Nxf5 37. Qd3 Nxg3 38. Kxg3 Bxc3 39. Bf2 Bf6 40. Qxb3 Bxb3 41. e4 Bh4+ 0-1

[Event "COL-ch"]
[Site "Boyaca"]
[Date "2022.08.18"]
[Round "4"]
[White "Rojas Martinez, Alexander"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "D00"]
[BlackElo "1973"]
[PlyCount "59"]
[EventDate "2022.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. c3 cxd4 5. cxd4 Qb6 6. Qb3 Qxb3 7. axb3 Nc6 8. Bb5 Bd7 9. Nf3 e6 10. h3 Ne4 11. Nc3 Bb4 12. Rc1 Rc8 13. 0-0 f5 14. Nxe4 fxe4 15. Bxc6 Bxc6 16. Ne5 Bd7 17. Rxc8+ Bxc8 18. Rc1 0-0 19. Rc7 Bd6 20. Rc2 Bb4 21. Rc7 Ba5 22. Rc5 Bb6 23. Rc3 a6 24. b4 Re8 25. Bg5 Ba7 26. Be7 Bb6 27. Bd6 Ba7 28. Be7 g6 29. Bd6 Kg7 30. Bc7 1/2-1/2

[Event "COL-ch"]
[Site "Boyaca"]
[Date "2022.08.17"]
[Round "2"]
[White "Perez, William"]
[Black "Mateus Urbano, Luis Alejandro"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "1973"]
[BlackElo "2326"]
[PlyCount "61"]
[EventDate "2022.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nc6 5. Nf3 d6 6. d3 e5 7. Bg5 f6 8. Be3 Nge7 9. a3 0-0 10. 0-0 Be6 11. Rb1 a5 12. Ne1 Qd7 13. Nc2 Bh3 14. Bxh3 Qxh3 15. b4 axb4 16. axb4 f5 17. f3 f4 18. Bf2 fxg3 19. hxg3 Rf5 20. g4 Bh6 21. Be3 Qg3+ 22. Kh1 Bf4 23. Bxf4 Rxf4 24. Ne4 Qh3+ 25. Kg1 Rxe4 26. dxe4 Qg3+ 27. Kh1 Qh3+ 28. Kg1 Qg3+ 29. Kh1 Qh3+ 30. Kg1 Qg3+ 31. Kh1 1/2-1/2

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.07"]
[Round "9"]
[White "Perez, William"]
[Black "Acosta Angulo, Mariana Valentina"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "1973"]
[BlackElo "1489"]
[PlyCount "41"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6 6. Bc4 Bg7 7. 0-0 h6 8. Bf4 Nf6 9. h3 0-0 10. e5 Nh7 11. Qd3 Kh8 12. Rad1 Qa5 13. a3 Nxe5 14. Nxe5 Bxe5 15. b4 Qc7 16. Nd5 Qd6 17. Bxh6 Bg7 18. Bf4 Be5 19. Bxe5+ Qxe5 20. Rfe1 Qg5 21. Nxe7 1-0

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.06"]
[Round "6"]
[White "Cuervo Velasquez, Juan Manuel"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "1678"]
[BlackElo "1973"]
[PlyCount "75"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. c4 e5 2. e4 c5 3. d3 Nc6 4. Nc3 g6 5. Nd5 Bg7 6. Ne2 d6 7. Nec3 h6 8. g3 Nge7 9. Bg2 0-0 10. 0-0 Nxd5 11. Nxd5 Kh7 12. Be3 f5 13. Qd2 Rb8 14. Rab1 fxe4 15. dxe4 Be6 16. a3 a5 17. a4 b6 18. b3 Nd4 19. Bxd4 exd4 20. f4 Qd7 21. Qd3 Kh8 22. Rb2 Bxd5 23. exd5 g5 24. Rbf2 Rbe8 25. fxg5 Rxf2 26. Rxf2 Qe7 27. Qg6 d3 28. Rf7 Qe3+ 29. Kh1 Qxg5 30. Qxd3 Re3 31. Qc2 Rc3 32. Rf8+ Bxf8 33. Qxc3+ Bg7 34. Qe1 Be5 35. Be4 Qg4 36. Qe3 Kg7 37. Qf3 Qg5 38. Qf5 1/2-1/2

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.06"]
[Round "7"]
[White "Perez, William"]
[Black "Diaz Larrea, Juan Manuel"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "1973"]
[BlackElo "1698"]
[PlyCount "68"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 c5 3. Bb2 e6 4. c4 Nc6 5. Nc3 d5 6. cxd5 exd5 7. d4 cxd4 8. Nxd4 Bc5 9. Nxc6 bxc6 10. e3 0-0 11. Be2 Re8 12. 0-0 Ne4 13. Nxe4 Rxe4 14. Rc1 Qb6 15. Bf3 Re6 16. Qc2 Bd6 17. g3 Bb7 18. Bg4 Rh6 19. Bd4 Qd8 20. f4 a5 21. Qb2 Bf8 22. Rf2 Qe8 23. Bf5 c5 24. Bxc5 Bxc5 25. Rxc5 Qxe3 26. Qc1 d4 27. Qxe3 dxe3 28. Re2 Rd8 29. Rc1 Rd2 30. Rxd2 exd2 31. Rd1 Rd6 32. Bg4 Be4 33. Ra1 f5 34. Bd1 Rc6 0-1

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.05"]
[Round "5"]
[White "Perez, William"]
[Black "Campos Gomez, Manuel"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "1973"]
[BlackElo "2352"]
[PlyCount "33"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. c4 c6 2. e4 d5 3. cxd5 cxd5 4. exd5 Nf6 5. Qa4+ Nbd7 6. Nc3 g6 7. Bc4 Bg7 8. Nf3 0-0 9. d3 Nb6 10. Qb3 Bg4 11. Ne5 Qd6 12. Bf4 Nh5 13. Ne4 Qd8 14. Nxg4 Nxf4 15. Ne3 Bxb2 16. 0-0 Bxa1 17. Rxa1 0-1

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.04"]
[Round "3"]
[White "Betancourt Giraldo, David Rogelio"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2078"]
[BlackElo "1973"]
[PlyCount "24"]
[EventDate "2022.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. g3 c5 4. Bg2 Nc6 5. e3 d5 6. b3 cxd4 7. exd4 Qa5+ 8. Bd2 Bb4 9. Bxb4 Qxb4+ 10. c3 Qd6 11. 0-0 0-0 12. Nbd2 b6 1/2-1/2

[Event "Medellin Luces op"]
[Site "Medellin"]
[Date "2021.12.20"]
[Round "7"]
[White "Ramirez, Benjamin Dario"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "B18"]
[WhiteElo "2203"]
[BlackElo "1979"]
[PlyCount "62"]
[EventDate "2021.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Bd3 Bxd3 8. Qxd3 e6 9. 0-0 Ngf6 10. Re1 Be7 11. Bf4 0-0 12. c4 Re8 13. Rad1 a5 14. a3 a4 15. Qe2 Qa5 16. Ne5 Rad8 17. Bd2 Qa6 18. Bc3 Nxe5 19. dxe5 Nd7 20. Ne4 Nb6 21. Rxd8 Rxd8 22. Nd2 Nd7 23. g3 b5 24. cxb5 cxb5 25. Ne4 Nb6 26. Qg4 Kh8 27. Nd6 Kg8 28. Ne4 Nd5 29. Nf6+ Kh8 30. Nxd5 Rxd5 31. Qf3 Kg8 1/2-1/2

[Event "Medellin Luces op"]
[Site "Medellin"]
[Date "2021.12.19"]
[Round "5"]
[White "Perez, William"]
[Black "Zapata Cuartas, Juan Carlos"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1979"]
[BlackElo "2093"]
[PlyCount "78"]
[EventDate "2021.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 b6 3. g3 Bb7 4. Bg2 Nf6 5. Nc3 e6 6. 0-0 d6 7. e3 Be7 8. b3 0-0 9. Bb2 Nbd7 10. d4 cxd4 11. Nxd4 Bxg2 12. Kxg2 Qc7 13. Qe2 a6 14. Rac1 Rfe8 15. Rfd1 Rad8 16. e4 Qb7 17. Kg1 Bf8 18. Rc2 Nc5 19. f3 Qa8 20. Rcd2 g6 21. e5 dxe5 22. Qxe5 Bg7 23. Qc7 e5 24. Nc6 Rxd2 25. Rxd2 Ne6 26. Qxb6 Nd4 27. Nxe5 Nxf3+ 28. Nxf3 Qxf3 29. Rd8 Bh6 30. Rxe8+ Nxe8 31. Nd5 Qd1+ 32. Kg2 Qe2+ 33. Qf2 Qe4+ 34. Kh3 f5 35. Qd4 Qe2 36. Qh8+ Kf7 37. Qxh7+ Ng7 38. Nf4 Qf1+ 39. Ng2 Qe2 1/2-1/2

[Event "Medellin Luces op"]
[Site "Medellin"]
[Date "2021.12.18"]
[Round "2"]
[White "Perez, William"]
[Black "Molina Ballesteros, Juan Sebastian"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "1979"]
[BlackElo "1733"]
[PlyCount "52"]
[EventDate "2021.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 c5 4. Nf3 Nc6 5. 0-0 b6 6. d4 cxd4 7. Nxd4 Bb7 8. Nb5 d6 9. N1c3 Na5 10. Qa4 Nd7 11. Rd1 Bxg2 12. Kxg2 Qb8 13. Kg1 a6 14. Nxd6+ Bxd6 15. Ne4 Nb7 16. Qc6 Ke7 17. Bf4 e5 18. Be3 Rc8 19. Qd5 Qc7 20. Ng5 Rf8 21. Nxh7 Nf6 22. Nxf6 gxf6 23. Rac1 Rac8 24. a3 Qc6 25. Qd3 Rh8 26. f3 Bc5 0-1

[Event "Medellin Luces op"]
[Site "Medellin"]
[Date "2021.12.18"]
[Round "3"]
[White "Ruiz Agudelo, Jeronimo"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "1642"]
[BlackElo "1979"]
[PlyCount "98"]
[EventDate "2021.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Be7 12. 0-0-0 Ngf6 13. Qe2 Qb6 14. Be3 Qa5 15. Kb1 0-0 16. Bd2 Bb4 17. Bxb4 Qxb4 18. Ne5 Rfd8 19. a3 Qa5 20. Rhe1 Qd5 21. c4 Qd6 22. Qf3 Rac8 23. Ne4 Qe7 24. Nxd7 Rxd7 25. Nc5 Rdd8 26. Nb3 b5 27. cxb5 cxb5 28. d5 Qb7 29. dxe6 Qxf3 30. Rxd8+ Rxd8 31. exf7+ Kxf7 32. gxf3 Rd5 33. Rc1 Nxh5 34. Rc7+ Kf6 35. Rxa7 Nf4 36. a4 bxa4 37. Rxa4 Kg5 38. Ra7 g6 39. Nc1 h5 40. Rh7 h4 41. Kc2 h3 42. b4 Kf6 43. Rh4 g5 44. Rh7 Rd6 45. b5 Kg6 46. Rh8 Kg7 47. Re8 Rb6 48. Nd3 Ng2 49. Ra8 Ne1+ 0-1

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.18"]
[Round "10"]
[White "Lopez Ramirez, David Santiago"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2131"]
[BlackElo "2001"]
[PlyCount "111"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nxd4 5. Qxd4 Nf6 6. g3 d6 7. Bg2 g6 8. 0-0 Bg7 9. Qh4 Qc7 10. Nc3 a6 11. Bg5 Be6 12. b3 h6 13. Bd2 h5 14. Qd4 0-0 15. Rac1 Rab8 16. Qd3 Qd7 17. a4 Bh3 18. e4 Bxg2 19. Kxg2 Ng4 20. f4 f5 21. Rfe1 Rbe8 22. Rcd1 Nf6 23. Qf3 fxe4 24. Nxe4 Nxe4 25. Qxe4 Qc6 26. Bb4 Qb6 27. c5 dxc5 28. Qd5+ e6 29. Qxc5 Qxc5 30. Bxc5 Rf5 31. Bb6 Kf7 32. Rd7+ Re7 33. Red1 Bb2 34. b4 Ba3 35. Bc5 Rxc5 36. bxc5 Bxc5 37. a5 Bb4 38. Rxe7+ Kxe7 39. Rb1 Bxa5 40. Rxb7+ Kf6 41. Ra7 Bd2 42. Rxa6 Bc3 43. Kf3 Bd4 44. h3 Bb2 45. Ke4 Bc1 46. g4 hxg4 47. hxg4 Kf7 48. Ra7+ Kf8 49. Rc7 Bb2 50. Kd3 Ba3 51. Rd7 Bc1 52. Ke4 Bb2 53. Rb7 Bc1 54. Ke5 Bd2 55. Kxe6 Bxf4 56. Rf7+ 1-0

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.18"]
[Round "9"]
[White "Perez, William"]
[Black "Rosero Zapata, Luis Fernando"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2001"]
[BlackElo "1911"]
[PlyCount "120"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. e4 Nc6 6. Be3 d6 7. Nc3 Nf6 8. Be2 0-0 9. 0-0 Nxd4 10. Bxd4 a5 11. f3 Be6 12. b3 Nd7 13. Rc1 Bxd4+ 14. Qxd4 Qb6 15. Rfd1 Rfc8 16. Nd5 Bxd5 17. exd5 Qxd4+ 18. Rxd4 Nc5 19. Re1 Ra6 20. Bd1 Rc7 21. a3 Ra8 22. Re3 b6 23. h4 Rca7 24. a4 h5 25. g4 hxg4 26. fxg4 Kg7 27. Kg2 Re8 28. Bc2 Nd7 29. Rh3 Ne5 30. h5 gxh5 31. Rxh5 Rh8 32. Rxh8 Kxh8 33. g5 Kg7 34. Rh4 Ra8 35. Rh7+ Kg8 36. g6 Ra7 37. gxf7+ Nxf7 38. Bf5 Ra8 39. Kg3 Rf8 40. Kf4 Ne5 41. Rh3 Kg7 42. Rh7+ Kg8 43. Ke4 Rxf5 44. Kxf5 Kxh7 45. Ke6 Ng6 46. Kd7 Kg7 47. Kc6 Kf7 48. Kxb6 Ke8 49. Kxa5 Ne5 50. Kb6 Kd8 51. a5 Kc8 52. a6 Nd7+ 53. Kc6 Ne5+ 54. Kb5 Nd7 55. b4 Kb8 56. c5 Ka7 57. cxd6 exd6 58. Kc6 Nb8+ 59. Kxd6 Nxa6 60. b5 Nb4 1/2-1/2

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.17"]
[Round "8"]
[White "Araque, Rafael"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "2243"]
[BlackElo "2001"]
[PlyCount "122"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. g3 c5 3. d5 b5 4. c4 bxc4 5. Bg2 d6 6. Nc3 g6 7. Nf3 Bg7 8. Nd2 Nbd7 9. Nxc4 Ba6 10. Na3 Rb8 11. 0-0 0-0 12. Rb1 Re8 13. Re1 Nb6 14. Nc2 e6 15. dxe6 Rxe6 16. b4 Ng4 17. Ne4 Qc7 18. h3 Ne5 19. bxc5 dxc5 20. Be3 Ned7 21. Qc1 Bb7 22. Bf4 Be5 23. Bxe5 Qxe5 24. Ng5 Re7 25. Nf3 Qc3 26. Rb3 Qf6 27. Ne3 Bxf3 28. exf3 Rc8 29. Ra3 Rc7 30. Ng4 Rxe1+ 31. Qxe1 Qd4 32. Qe7 Kg7 33. Qd8 Rc8 34. Qg5 c4 35. Ne3 Qa1+ 36. Kh2 c3 37. Nf5+ Kh8 38. Nd6 c2 39. Nxf7+ Kg7 40. Nd6 c1Q 41. Qe7+ Kg8 42. h4 Qf6 43. Nxc8 Nxc8 44. Qxd7 Qxa3 45. Qxc8+ Kg7 46. Qd7+ Qae7 47. Qd2 Qfd6 48. Qc2 Qec7 49. Qe2 Qe5 50. Qd2 Qcd6 51. Qc2 Qdc5 52. Qa4 Qxf2 53. f4 Qd6 54. h5 Qd5 55. Qxa7+ Qxa7 56. Bxd5 Qf2+ 57. Bg2 gxh5 58. Kh3 Qxa2 59. Bf3 Kh6 60. g4 hxg4+ 61. Kxg4 Kg7 0-1

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.17"]
[Round "7"]
[White "Hernandez, Jeronimo"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2033"]
[BlackElo "2001"]
[PlyCount "43"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. e4 Nc6 6. Be3 Nf6 7. Nc3 0-0 8. Be2 a5 9. Ndb5 d6 10. 0-0 a4 11. Rb1 Be6 12. f4 Qa5 13. g4 Qb4 14. g5 Ne8 15. a3 Qa5 16. f5 Bd7 17. Nd5 Be5 18. Bb6 Qa6 19. c5 Nd4 20. Nxd4 Bxd4+ 21. Qxd4 e5 22. fxe6 1-0

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.16"]
[Round "5"]
[White "Juarez Flores, Gustavo Enrique"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "2108"]
[BlackElo "2001"]
[PlyCount "96"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. h4 h6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Bd2 e6 12. 0-0-0 Be7 13. Kb1 Qb6 14. c4 Qa6 15. Bc3 b5 16. cxb5 cxb5 17. d5 Nc5 18. Qe2 Nxd5 19. Rxd5 exd5 20. Bxg7 Rg8 21. Re1 Ne6 22. Nf5 Qb7 23. Bf6 Bc5 24. g3 Rg4 25. Nd2 Ra4 26. Ng7+ Kf8 27. Nxe6+ fxe6 28. Qxe6 Ra6 29. Qe5 Qf7 30. Bh4 Kg8 31. f4 Bf8 32. g4 Bg7 33. Qe2 d4 34. Nb3 Qc4 35. Qd2 Re6 36. g5 Rxe1+ 37. Bxe1 Re8 38. Nc1 d3 39. Bf2 Rc8 40. Nb3 Qc2+ 41. Qxc2 Rxc2 42. Bd4 Bxd4 43. Nxd4 Rf2 44. Kc1 Rxf4 45. Nxb5 hxg5 46. Kd2 g4 47. Ke3 Rf3+ 48. Ke4 Rg3 0-1

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.16"]
[Round "6"]
[White "Perez, William"]
[Black "Narvaez Ramirez, Faber Alberto"]
[Result "1/2-1/2"]
[ECO "A15"]
[WhiteElo "2001"]
[BlackElo "2093"]
[PlyCount "123"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. c4 0-0 5. g3 d6 6. Bg2 e5 7. d3 Nc6 8. 0-0 Nd7 9. e4 Nc5 10. Nc3 f5 11. a3 a5 12. h3 g5 13. Bc1 h6 14. Rb1 g4 15. hxg4 fxg4 16. Nh2 h5 17. b4 axb4 18. axb4 Ne6 19. f3 gxf3 20. Nxf3 Qe8 21. Nd5 Ra2 22. Nh4 Ncd4 23. Ng6 Ne2+ 24. Kh2 Rxf1 25. Qxf1 Nf8 26. Nde7+ Kh7 27. Nxf8+ Bxf8 28. Nxc8 Qxc8 29. Qf7+ Bg7 30. Qxh5+ Kg8 31. Bg5 Qf8 32. Be3 Qf7 33. Qxf7+ Kxf7 34. Rf1+ Kg6 35. Rf2 Nc3 36. Rxa2 Nxa2 37. b5 Nb4 38. Bf1 Nc2 39. Bf2 b6 40. Be2 Bh6 41. Kh3 Be3 42. Bxe3 Nxe3 43. Kh4 Ng2+ 44. Kg4 Ne3+ 45. Kf3 Nc2 46. Bd1 Nd4+ 47. Kg4 Ne6 48. Kh4 Kh6 49. Bg4 Nc5 50. Be2 Ne6 51. Bh5 Nc5 52. Bf7 Nxd3 53. Kg4 Kg7 54. Bd5 Kf6 55. Kh5 Ne1 56. Kh6 Nf3 57. Kh7 Nd2 58. Kg8 Nf1 59. Kf8 Nxg3 60. Ke8 Ne2 61. Kd7 Nc3 62. Kxc7 1/2-1/2

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.15"]
[Round "4"]
[White "Perez, William"]
[Black "Montilla Reyes, Jorcerys"]
[Result "0-1"]
[ECO "A53"]
[WhiteElo "2001"]
[BlackElo "2136"]
[PlyCount "110"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 d6 4. e3 Bg4 5. Be2 Be7 6. d4 Nbd7 7. 0-0 0-0 8. b3 c6 9. Qc2 Qc7 10. Bb2 Rfe8 11. Rfd1 Bf8 12. dxe5 dxe5 13. Rd2 Nc5 14. Rad1 e4 15. Nd4 Bd6 16. h3 Bxe2 17. Ndxe2 Be5 18. Nd4 a6 19. Ba3 Qa5 20. Bxc5 Qxc5 21. Na4 Qa5 22. c5 Nd5 23. a3 Bb8 24. Ne2 Qc7 25. g3 Qe7 26. Nec3 Nxc3 27. Qxc3 Be5 28. Qc2 Qg5 29. Nb6 Rab8 30. Rd7 Qf5 31. Nc4 h5 32. h4 Re6 33. Rd8+ Rxd8 34. Rxd8+ Kh7 35. Nd6 Bxd6 36. cxd6 Qd5 37. Rd7 Rxd6 38. Rxb7 Qf5 39. Rb4 Re6 40. Rc4 Qd5 41. Rc5 Qd6 42. Rxh5+ Kg8 43. Rc5 Rg6 44. Rc4 f5 45. b4 Qf6 46. Kh2 Rh6 47. Rd4 g5 48. Qc4+ Kf8 49. Qc5+ Kg8 50. Rd7 gxh4 51. Qc4+ Kf8 52. Qd4 hxg3+ 53. Kg2 Rh2+ 54. Kg1 gxf2+ 55. Kf1 Rh1+ 0-1

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.15"]
[Round "3"]
[White "Perez, William"]
[Black "Palencia Morales, Wilson Guillermo"]
[Result "0-1"]
[ECO "A28"]
[WhiteElo "2001"]
[BlackElo "2331"]
[PlyCount "49"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bc5 5. d3 d6 6. h3 Nd7 7. Bg5 f6 8. Bh4 Nf8 9. Be2 Ne6 10. Nd5 0-0 11. 0-0 g5 12. Bg3 h5 13. Nd2 h4 14. Bh2 Ncd4 15. Bg4 c6 16. Ne3 a5 17. Nb3 Nxb3 18. Qxb3 Nd4 19. Qd1 f5 20. exf5 Nxf5 21. Nxf5 Bxf5 22. Bxf5 Rxf5 23. g3 hxg3 24. Bxg3 Qd7 25. Qg4 0-1

[Event "Manizales Las Americas op-A"]
[Site "Manizales"]
[Date "2021.10.14"]
[Round "2"]
[White "Ortiz Q, Johnny Alexander"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2192"]
[BlackElo "2001"]
[PlyCount "66"]
[EventDate "2021.10.14"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 e5 8. dxe5 Nh5 9. Be3 Nxe5 10. Bb5+ Nc6 11. Qa4 Bd7 12. Nf3 a6 13. Be2 Nf6 14. 0-0 Be7 15. Nbd2 0-0 16. Rad1 Qc7 17. Bf4 Bd6 18. Bxd6 Qxd6 19. Qh4 Bf5 20. Nc4 Qc7 21. Ne3 Be4 22. Rd2 Rad8 23. Rfd1 Rfe8 24. Nd4 Ne5 25. Qg3 Bg6 26. f3 Qc5 27. Qf2 Qa5 28. g4 h6 29. a3 Qb6 30. h4 Nc6 31. Nef5 Qc7 32. Qg3 Qxg3+ 33. Nxg3 Nxd4 0-1

[Event "Medellin Raza op"]
[Site "Medellin"]
[Date "2021.10.10"]
[Round "9"]
[White "Cuesta Cifuentes, Jair Alfonso"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "1945"]
[BlackElo "2001"]
[PlyCount "47"]
[EventDate "2021.10.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. b3 Nf6 4. Bb2 g6 5. g4 h6 6. h4 Bg7 7. Bg2 d6 8. g5 hxg5 9. hxg5 Rxh1+ 10. Bxh1 Nh5 11. Bxg7 Nxg7 12. Qc2 e5 13. Nc3 Be6 14. 0-0-0 Qe7 15. e3 0-0-0 16. d4 exd4 17. exd4 Bf5 18. Qd2 Nb4 19. Nd5 Qe4 20. Kb2 Nd3+ 21. Ka3 Rh8 22. Qa5 Kb8 23. Ne5 Qe2 24. Nc6+ 1-0

[Event "Medellin Raza op"]
[Site "Medellin"]
[Date "2021.10.09"]
[Round "7"]
[White "Leon Acevedo, Juan Alejandro"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "D71"]
[WhiteElo "1838"]
[BlackElo "2001"]
[PlyCount "59"]
[EventDate "2021.10.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 Nxc3 7. bxc3 c5 8. e3 Qa5 9. Bd2 0-0 10. Ne2 Nc6 11. 0-0 Rd8 12. Qc2 Qa6 13. Nf4 cxd4 14. cxd4 Bf5 15. Qb3 e5 16. Nd5 Be6 17. dxe5 Bxe5 18. Rad1 Rd7 19. Bc3 Rad8 20. Bxe5 Nxe5 21. e4 Bxd5 22. exd5 Nc4 23. Rfe1 Nd6 24. Rc1 Qa5 25. Re2 Qb5 26. Qd1 Qa5 27. Qb3 Rc7 28. Rce1 Qc3 29. Qa4 b5 30. Qh4 1/2-1/2

[Event "Medellin Raza op"]
[Site "Medellin"]
[Date "2021.10.09"]
[Round "6"]
[White "Perez, William"]
[Black "Echavarria, Johann"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "2001"]
[BlackElo "2288"]
[PlyCount "42"]
[EventDate "2021.10.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Bb4 3. g3 Bxc3 4. dxc3 d6 5. Bg2 Ne7 6. Nf3 Nbc6 7. 0-0 Be6 8. b3 h6 9. e4 Qd7 10. Be3 b6 11. Qe2 Bh3 12. Rad1 Bxg2 13. Kxg2 f5 14. exf5 Nxf5 15. Bc1 0-0 16. Nd2 Nce7 17. Ne4 Ng6 18. Kh1 Nfe7 19. Kg2 Rf5 20. h4 Qe8 21. h5 Rxh5 0-1

[Event "Medellin Raza op"]
[Site "Medellin"]
[Date "2021.10.08"]
[Round "4"]
[White "Gonzalez, Leandro"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1773"]
[BlackElo "2001"]
[PlyCount "60"]
[EventDate "2021.10.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 e5 8. dxe5 Nh5 9. Be3 Nxe5 10. Bb5+ Nc6 11. Nd2 Be6 12. Qa4 Bd7 13. Ngf3 a6 14. Be2 Be7 15. Qb3 Nf6 16. Qxb7 Rb8 17. Qxa6 Rxb2 18. Bb5 Nb8 19. Bxd7+ Qxd7 20. Qd3 0-0 21. 0-0 Nc6 22. Rfb1 Rxb1+ 23. Qxb1 Ng4 24. Qd3 Nxe3 25. fxe3 Bf6 26. Rb1 Qa7 27. Rb5 Qxa2 28. Qxd5 Qxd5 29. Rxd5 Bxc3 30. Rc5 Bxd2 1/2-1/2

[Event "Medellin Raza op"]
[Site "Medellin"]
[Date "2021.10.07"]
[Round "3"]
[White "Mendez Ramirez, Victor"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "2142"]
[BlackElo "2001"]
[PlyCount "17"]
[EventDate "2021.10.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. e4 Bg7 6. Be3 Nf6 7. Nc3 d6 8. Be2 a5 9. f3 1/2-1/2

[Event "Medellin Raza op"]
[Site "Medellin"]
[Date "2021.10.06"]
[Round "1"]
[White "Perez, William"]
[Black "Borre Meza, Orlando David"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "2001"]
[BlackElo "1490"]
[PlyCount "73"]
[EventDate "2021.10.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 e5 4. Nf3 Nc6 5. d4 d6 6. Bg5 Be7 7. d5 Nb8 8. Qd2 h6 9. Be3 Ng4 10. Be2 Nxe3 11. Qxe3 0-0 12. 0-0 f5 13. c5 fxe4 14. Nxe4 Bf5 15. Rac1 Nd7 16. cxd6 cxd6 17. Ng3 Bg6 18. Rc3 Nf6 19. Qd2 e4 20. Nd4 Bf7 21. Ne6 Bxe6 22. dxe6 d5 23. Rb3 b6 24. Nf5 Bc5 25. Rg3 Kh8 26. Nxg7 e3 27. Qc2 Ne4 28. Rg4 Rxf2 29. Rxf2 exf2+ 30. Kf1 Be3 31. g3 Rc8 32. e7 Qe8 33. Qxc8 Qxc8 34. e8Q+ Qxe8 35. Nxe8 h5 36. Rxe4 dxe4 37. Nf6 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.08"]
[Round "8"]
[White "Soto, Cristian Camilo"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2088"]
[BlackElo "1958"]
[PlyCount "97"]
[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. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e5 6. Nge2 Nge7 7. 0-0 0-0 8. b3 d6 9. Bb2 Be6 10. Na4 Qd7 11. d4 cxd4 12. exd4 Bh3 13. dxe5 Nxe5 14. Nf4 Bxg2 15. Kxg2 Qc6+ 16. f3 Bh6 17. Nd5 Nxd5 18. cxd5 Qa6 19. f4 Nd3 20. Bc3 Rac8 21. Rf3 Nc5 22. Qd4 f6 23. Nxc5 dxc5 24. Qd2 Qd6 25. Rd1 Rfe8 26. Re3 Rxe3 27. Qxe3 Kf7 28. h4 Re8 29. Qf3 f5 30. Be5 Qd7 31. d6 Re6 32. Qd5 Bf8 33. Qxc5 a6 34. Qd5 Ke8 35. h5 Kd8 36. hxg6 Rxg6 37. Qa5+ Ke8 38. Qc7 Re6 39. Kf2 Rg6 40. Re1 Qxc7 41. dxc7 Rc6 42. Rd1 Be7 43. Kf3 Kf7 44. g4 fxg4+ 45. Kxg4 Rg6+ 46. Kf5 Rc6 47. Rh1 Kg8 48. Rh6 Rc2 49. Rb6 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.07"]
[Round "6"]
[White "Perez, William"]
[Black "Alvarez Angel, Nelson Eduardo"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "1958"]
[BlackElo "2078"]
[PlyCount "103"]
[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. c4 c5 2. Nf3 Nc6 3. Nc3 e5 4. g3 g6 5. Bg2 Bg7 6. d3 Nge7 7. Bg5 0-0 8. Bxe7 Nxe7 9. Nd2 Rb8 10. Qa4 a6 11. Rb1 d6 12. b4 Qc7 13. bxc5 dxc5 14. Qb3 b6 15. 0-0 Be6 16. a4 f5 17. Nd5 Nxd5 18. cxd5 Bf7 19. Rfc1 Rfd8 20. e4 Bh6 21. Rc2 Bxd2 22. Rxd2 b5 23. axb5 axb5 24. Rc2 fxe4 25. dxe4 Rb6 26. Bf1 Rdb8 27. Qc3 c4 28. Qb4 g5 29. Bh3 Kg7 30. Rd2 Rd8 31. Qc3 Kg8 32. Bf5 h6 33. Kh1 Qc5 34. Qxe5 c3 35. Rd3 b4 36. Rf3 c2 37. Rc1 b3 38. Bh7+ Kf8 39. Qh8+ Ke7 40. Qe5+ Kf8 41. Qh8+ Ke7 42. Qg7 Rf8 43. Qe5+ Kd8 44. Rc3 Qe7 45. Rc8+ Kxc8 46. Qxe7 Rh8 47. d6 Rb7 48. Bf5+ Kb8 49. Qe5 Re8 50. d7+ Rxe5 51. d8Q+ Ka7 52. Ra1+ 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.06"]
[Round "5"]
[White "Chirivi Castiblanco, Jenny Astrid"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "D96"]
[WhiteElo "2097"]
[BlackElo "1958"]
[PlyCount "69"]
[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 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 Nc6 7. e4 Na5 8. Qa4+ c6 9. e5 Nd5 10. Bd2 b6 11. b4 Nxc3 12. Bxc3 Nb7 13. Qxc6+ Qd7 14. d5 0-0 15. Qxd7 Bxd7 16. Ba6 Rac8 17. Bd2 Rc7 18. Rc1 Rfc8 19. Ke2 h6 20. h4 Bg4 21. Rxc7 Rxc7 22. Rc1 Rd7 23. Bf4 Nd8 24. Bc4 Rc7 25. Kd2 Bxf3 26. gxf3 Kf8 27. Rc2 Rd7 28. Ke3 g5 29. hxg5 hxg5 30. Bg3 f5 31. f4 a5 32. bxa5 gxf4+ 33. Bxf4 bxa5 34. e6 Rb7 35. Bd3 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.06"]
[Round "4"]
[White "Perez, William"]
[Black "Torres Cueto, Jesus Marcial"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "1958"]
[BlackElo "2086"]
[PlyCount "45"]
[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. Nf3 d6 2. b3 e5 3. d3 f5 4. Nbd2 Nf6 5. e4 f4 6. Bb2 Bg4 7. Be2 c5 8. c3 Nc6 9. h3 Bxf3 10. Nxf3 a6 11. Qc2 Rc8 12. Rc1 g6 13. 0-0 Bh6 14. Qb1 Qe7 15. d4 0-0 16. dxc5 dxc5 17. Bc4+ Kh8 18. Bd5 Bg7 19. Bxc6 Rxc6 20. c4 Nd7 21. Rcd1 Rd6 22. Rxd6 Qxd6 23. Rd1 1-0

[Event "Feria de las Flores 28th"]
[Site "Medellin"]
[Date "2021.08.05"]
[Round "2"]
[White "Perez, William"]
[Black "Hurtado Paez, Andres Jesus"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "1958"]
[BlackElo "1549"]
[PlyCount "31"]
[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. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Nd5 Nxd5 5. cxd5 d6 6. Qa4+ Bd7 7. Qxb4 b6 8. Bg2 0-0 9. Nf3 Na6 10. Qa3 Nc5 11. d4 exd4 12. Nxd4 Qf6 13. Be3 Rfe8 14. 0-0 Ne4 15. Rac1 Ng5 16. Rxc7 1-0

[Event "COL-chB U2000"]
[Site "Antioquia"]
[Date "2018.12.08"]
[Round "5"]
[White "Perez, William"]
[Black "Arroyave, Jhon Jairo"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1995"]
[BlackElo "1850"]
[PlyCount "47"]
[EventDate "2018.12.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc7 6. Ne4 e5 7. Qc2 Nba6 8. Nf3 f6 9. a3 Be6 10. 0-0 Be7 11. d3 Rb8 12. Rd1 0-0 13. e3 Qe8 14. b3 Qf7 15. Rb1 Rfd8 16. d4 cxd4 17. exd4 exd4 18. Nxd4 Bd5 19. b4 Rbc8 20. Bh3 Ne6 21. Qe2 Rc4 22. Nxe6 Bxe6 23. Rxd8+ Bxd8 24. Nd6 1-0

[Event "COL-chB U2000"]
[Site "Antioquia"]
[Date "2018.12.07"]
[Round "3"]
[White "Uribe Valencia, Victor Alexis"]
[Black "Perez, William"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "1867"]
[BlackElo "1995"]
[PlyCount "115"]
[EventDate "2018.12.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. dxe5 dxe5 6. Bc4 Be7 7. Bg5 c6 8. 0-0 0-0 9. Re1 Qc7 10. Qe2 Re8 11. Rad1 b5 12. Bb3 Nc5 13. a3 Nxb3 14. cxb3 Be6 15. Qc2 a6 16. b4 Rad8 17. Rxd8 Rxd8 18. Rd1 h6 19. Bh4 g5 20. Bg3 Nd7 21. Nd2 Nb6 22. b3 c5 23. Na2 c4 24. bxc4 Nxc4 25. Nxc4 Rxd1+ 26. Qxd1 Qxc4 27. Nc1 Qxe4 28. Nd3 f6 29. f3 Qd5 30. Bf2 Bf5 31. Nb2 Qxd1+ 32. Nxd1 Kf7 33. Nc3 Ke6 34. Kf1 g4 35. Ke2 gxf3+ 36. gxf3 Bc2 37. Kd2 Bb3 38. Ne4 Bd5 39. Ke2 Bxe4 40. fxe4 a5 41. bxa5 Kd7 42. Be3 h5 43. Bc1 Kc6 44. Kf3 Kb7 45. Kg3 Ka6 46. Kh4 f5+ 47. Kxh5 fxe4 48. Kg4 Kxa5 49. Kf5 Bxa3 50. Bxa3 e3 51. Bc1 e2 52. Bd2+ b4 53. Ke4 Ka4 54. Kd3 b3 55. Kc3 Ka3 56. Bc1+ Ka2 57. Kd2 Kb1 58. Ba3 1/2-1/2

[Event "Manizales-ch"]
[Site "Manizales"]
[Date "2016.09.10"]
[Round "7"]
[White "Perez, William"]
[Black "Cuervo, Victor Manuel"]
[Result "0-1"]
[ECO "E14"]
[WhiteElo "1991"]
[BlackElo "1818"]
[PlyCount "86"]
[EventDate "2016.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 e6 4. Nc3 b6 5. Nf3 d6 6. e4 cxd4 7. Nxd4 a6 8. Be3 Bb7 9. Bd3 Nbd7 10. Nb3 Be7 11. 0-0 0-0 12. f4 Qc7 13. g4 Nc5 14. Nxc5 bxc5 15. g5 Nd7 16. Qg4 Rfe8 17. Rae1 Rad8 18. Bb1 Bf8 19. Qh4 Be7 20. Rf3 Nf8 21. Rh3 f6 22. g6 f5 23. gxh7+ Kh8 24. Qh5 g6 25. Qh6 Bf6 26. Kf2 Rd7 27. e5 Rxh7 28. exf6 Rxh6 29. Rxh6+ Kg8 30. Rg1 Qf7 31. Bd2 Qxf6 32. Ne2 Re7 33. Bc3 e5 34. fxe5 dxe5 35. Nf4 Rg7 36. Rg3 Qe7 37. Nxg6 Nxg6 38. Rhxg6 Rxg6 39. Rxg6+ Kf7 40. Bxf5 Qh4+ 41. Kg1 Qf4 42. Bc2 Qe3+ 43. Kf1 Qc1+ 0-1

[Event "Manizales-ch"]
[Site "Manizales"]
[Date "2016.09.09"]
[Round "5"]
[White "Perez, William"]
[Black "Gutierrez, Jhon Jaime"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "1991"]
[BlackElo "1859"]
[PlyCount "88"]
[EventDate "2016.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. d4 e6 2. e3 d5 3. Bd3 Bd6 4. Nf3 f5 5. c4 c6 6. Qc2 Nf6 7. Nbd2 0-0 8. b3 Nbd7 9. Bb2 Ne4 10. 0-0 Qf6 11. Rfd1 g5 12. Nf1 g4 13. Ne1 Qg5 14. f3 gxf3 15. Nxf3 Qg7 16. Kh1 Rf6 17. Bxe4 fxe4 18. Ng1 Rh6 19. Nh3 Nf6 20. Nf4 Bd7 21. Qe2 Rf8 22. g3 Kh8 23. Kg1 Ng4 24. Rd2 Nxe3 25. Nxe6 Bxe6 26. Qxe3 Bf4 27. Qe2 Bxd2 28. Nxd2 Bg4 29. Qe3 Bh3 30. Rc1 Rhf6 31. Ba3 R8f7 32. cxd5 cxd5 33. Bb4 h6 34. a4 Kh7 35. a5 a6 36. Qe2 Qg5 37. Re1 Bg4 38. h4 Qg7 39. Qe3 Rf3 40. Nxf3 Rxf3 41. Qd2 Rxg3+ 42. Kf2 Rf3+ 43. Kg1 Be6+ 44. Kh2 Rh3# 0-1

[Event "Manizales-ch"]
[Site "Manizales"]
[Date "2016.09.07"]
[Round "3"]
[White "Perez, William"]
[Black "Avila, Edgar"]
[Result "1-0"]
[ECO "E46"]
[WhiteElo "1991"]
[BlackElo "1289"]
[PlyCount "65"]
[EventDate "2016.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 0-0 5. e3 Nc6 6. Bd3 d5 7. f4 Bxc3 8. bxc3 Ne4 9. Nf3 h6 10. 0-0 f5 11. Rb1 Kh7 12. cxd5 exd5 13. c4 Rg8 14. cxd5 Ne7 15. Qc2 Nxd2 16. Nxd2 Nxd5 17. Bxf5+ Kh8 18. Rf3 Qe7 19. Bxc8 Rgxc8 20. e4 Nb6 21. f5 c6 22. e5 Nd5 23. Ne4 Rab8 24. f6 gxf6 25. Nxf6 Rf8 26. Rbf1 Nxf6 27. Rxf6 Rxf6 28. Rxf6 Qg7 29. Qd2 Kh7 30. Qd3+ Kh8 31. Qe3 Kh7 32. Qe4+ Kh8 33. Qf4 1-0

[Event "Manizales-ch"]
[Site "Manizales"]
[Date "2016.09.06"]
[Round "2"]
[White "Badillo, Julio Cesar"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1933"]
[BlackElo "1991"]
[PlyCount "66"]
[EventDate "2016.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 174 Extra"]
[Source "ChessBase"]
[SourceDate "2016.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bg6 5. h4 h5 6. e6 fxe6 7. g5 Qd6 8. Bd3 Bxd3 9. Qxd3 e5 10. Nh3 Nd7 11. c3 e4 12. Qc2 e5 13. Be3 Ne7 14. Nd2 Nf5 15. 0-0-0 0-0-0 16. Qa4 a6 17. dxe5 Nxe5 18. Nxe4 Qd7 19. Nc5 Qf7 20. g6 Nxg6 21. Ng5 Qe7 22. Nge6 Nxe3 23. fxe3 Rd6 24. Nd4 Rf6 25. Ndb3 Qxe3+ 26. Kb1 Bxc5 27. Rhe1 Qf2 28. Rf1 Qxf1 29. Rxf1 Rxf1+ 30. Kc2 Rf4 31. Qa5 Ba7 32. Nc5 Bxc5 33. Qxc5 Rhf8 0-1

[Event "Risarald op"]
[Site "Risarald"]
[Date "2015.06.14"]
[Round "5"]
[White "Perez, William"]
[Black "Matta, Paola Andrea"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1711"]
[BlackElo "1994"]
[PlyCount "36"]
[EventDate "2015.06.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 e6 5. e3 Nc6 6. Nge2 Nge7 7. d4 cxd4 8. exd4 d5 9. cxd5 exd5 10. Bg5 Qa5 11. Bxe7 Nxe7 12. Qb3 0-0 13. Bxd5 Nxd5 14. Qxd5 Qxd5 15. Nxd5 Bg4 16. Ndc3 Rfe8 17. Rd1 b5 18. a3 a5 0-1

[Event "Risarald op"]
[Site "Risarald"]
[Date "2015.06.14"]
[Round "4"]
[White "Perez, William"]
[Black "Montoya, Duvan"]
[Result "1-0"]
[ECO "D79"]
[WhiteElo "1711"]
[BlackElo "2050"]
[PlyCount "87"]
[EventDate "2015.06.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 c6 5. d4 d5 6. cxd5 cxd5 7. Qb3 e6 8. Nf3 Nc6 9. 0-0 0-0 10. Bf4 Nh5 11. Bg5 f6 12. Bd2 f5 13. e3 Na5 14. Qb4 Nc4 15. Rac1 g5 16. Ne2 a5 17. Qc3 Bd7 18. b3 Nd6 19. Qc7 Bb5 20. Rfe1 Ne4 21. Qxd8 Rfxd8 22. Nc3 Bd3 23. Nxe4 dxe4 24. Nxg5 e5 25. Ne6 Rdc8 26. Nxg7 Nxg7 27. dxe5 b6 28. Bf1 Rd8 29. Bc3 Ne6 30. Red1 Rac8 31. Bb2 Nc5 32. Bd4 Bxf1 33. Kxf1 Nd3 34. Bxb6 Rxc1 35. Rxc1 Nxc1 36. Bxd8 Nxa2 37. Bxa5 Nc1 38. b4 Kf7 39. b5 Nd3 40. Bc7 Ke6 41. b6 Nc5 42. Ke2 Kd7 43. f3 Ne6 44. f4 1-0

[Event "Risarald op"]
[Site "Risarald"]
[Date "2015.06.13"]
[Round "3"]
[White "Guzman, River"]
[Black "Perez, William"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "1941"]
[BlackElo "1711"]
[PlyCount "81"]
[EventDate "2015.06.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. h4 h6 8. Bd3 Bxd3 9. Qxd3 e6 10. Bf4 Qa5+ 11. c3 Ngf6 12. Ne4 Nxe4 13. Qxe4 Nf6 14. Qc2 Be7 15. 0-0 0-0 16. Ne5 Nd5 17. Bg3 Rfd8 18. a4 c5 19. dxc5 Qxc5 20. Rfe1 Rac8 21. Qe2 b6 22. Qh5 Rf8 23. Nd7 Qc4 24. Nxf8 Kxf8 25. Qe2 Qc6 26. Qa6 Bc5 27. a5 Ra8 28. axb6 Bxb6 29. Qd3 Kg8 30. Be5 Rd8 31. Qg3 f6 32. Bd4 Bxd4 33. cxd4 Qb6 34. Qa3 Rd7 35. Re4 f5 36. Re2 Qxd4 37. Rxe6 Nf6 38. Qb3 Kh7 39. Qc2 g6 40. Ra4 Qd5 41. Rxf6 1-0

[Event "Risarald op"]
[Site "Risarald"]
[Date "2015.06.13"]
[Round "2"]
[White "Perez, William"]
[Black "Cuervo, Andres Felipe"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "1711"]
[BlackElo "1879"]
[PlyCount "151"]
[EventDate "2015.06.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. d4 c6 6. d5 Qb6 7. e4 d6 8. h3 Nbd7 9. Nge2 Ne5 10. b3 cxd5 11. cxd5 Qa6 12. 0-0 Nd3 13. Be3 Bd7 14. a4 Rac8 15. Qd2 Nc5 16. Nd4 Qd3 17. Qxd3 Nxd3 18. Nce2 a6 19. a5 Nc5 20. f3 Rc7 21. Rfd1 Rfc8 22. Rac1 Be8 23. Rc2 Ncd7 24. Rdc1 Rxc2 25. Rxc2 Rxc2 26. Nxc2 Ne5 27. Ned4 Nfd7 28. f4 Nd3 29. b4 g5 30. Bf1 gxf4 31. gxf4 Nb2 32. Nf5 Bf6 33. b5 axb5 34. Bxb5 Kf8 35. Be2 Na4 36. e5 dxe5 37. fxe5 Nxe5 38. Bh6+ Kg8 39. Bf4 Nc3 40. Bxe5 Bxe5 41. Bf3 Kf8 42. d6 e6 43. Nfd4 Bxd6 44. Bxb7 Bc5 45. Kg2 Ke7 46. Kf3 Kd6 47. a6 f5 48. h4 h6 49. Nb3 Ba7 50. Ncd4 Bd7 51. Ne2 Nxe2 52. Kxe2 e5 53. Nd2 Bb5+ 54. Kf3 Kc5 55. Bc8 Bc6+ 56. Ke2 f4 57. Kd3 Kd5 58. Bb7 Bxb7 59. axb7 Kc6 60. Ke4 Bb8 61. Kf5 Kxb7 62. Kg6 Ba7 63. Kxh6 Be3 64. Nc4 Bd4 65. Nd2 Kc6 66. Kg5 Kd5 67. Kf5 Be3 68. Nf1 e4 69. h5 Bc1 70. h6 f3 71. h7 Bb2 72. Ne3+ Kd6 73. Nc4+ Kc5 74. Nxb2 f2 75. h8Q f1Q+ 76. Kxe4 1/2-1/2

[Event "Risarald op"]
[Site "Risarald"]
[Date "2015.06.12"]
[Round "1"]
[White "Prieto, Ernesto"]
[Black "Perez, William"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2103"]
[BlackElo "1711"]
[PlyCount "78"]
[EventDate "2015.06.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 c6 2. Ne2 d5 3. e5 Bf5 4. d4 e6 5. Ng3 Bg6 6. h4 h6 7. h5 Bh7 8. Bd3 Bxd3 9. Qxd3 Nd7 10. 0-0 Ne7 11. Nc3 a6 12. Nce2 c5 13. c3 Nc6 14. Nf4 cxd4 15. cxd4 Be7 16. Bd2 0-0 17. Rac1 Rc8 18. Rc3 Bb4 19. Nxd5 Bxc3 20. Bxc3 exd5 21. Nf5 Ne7 22. Nd6 Rc6 23. Bb4 Qb6 24. Ba3 Rxd6 25. Bxd6 Re8 26. Ba3 Nc6 27. Rd1 Nf8 28. Bxf8 Kxf8 29. f4 Kg8 30. Kh2 Qxb2 31. f5 Qf2 32. f6 gxf6 33. Qh3 Qf4+ 34. Kh1 Nxd4 35. exf6 Ne2 36. a3 Qxf6 37. Re1 Qf2 38. Qg4+ Kh7 39. Rd1 Re4 0-1

[Event "Pereira Forero Cup 2nd"]
[Site "Pereira"]
[Date "2015.04.19"]
[Round "5"]
[White "Perez, William"]
[Black "Gallego, Julian Andres"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "1659"]
[BlackElo "1628"]
[PlyCount "87"]
[EventDate "2015.04.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 d5 4. Bd3 Bd6 5. Nbd2 Nbd7 6. 0-0 0-0 7. Re1 c5 8. c3 e5 9. e4 cxd4 10. cxd4 exd4 11. e5 Nc5 12. Bb1 Nfe4 13. exd6 Bf5 14. Nxe4 dxe4 15. Nxd4 Bg6 16. Bf4 Re8 17. b4 Nd3 18. Bxd3 exd3 19. Nb5 Rxe1+ 20. Qxe1 Qf6 21. Nc7 Rd8 22. Qe5 Qxe5 23. Bxe5 f6 24. Bf4 Kf7 25. Re1 Rd7 26. f3 h5 27. h4 Bf5 28. Kf2 g5 29. hxg5 fxg5 30. Bh2 g4 31. Re5 Bg6 32. Nd5 gxf3 33. gxf3 b6 34. Re7+ Rxe7 35. Nxe7 Bh7 36. f4 Ke6 37. f5+ Kd7 38. Ke3 a5 39. a3 axb4 40. axb4 h4 41. Kxd3 h3 42. Ke4 b5 43. Nd5 Kc6 44. Nf6 1-0

[Event "US Open-98"]
[Site "Kissimmee"]
[Date "1997.08.12"]
[Round "8"]
[White "Perez, William"]
[Black "Alexopoulos, Georgios"]
[Result "1-0"]
[ECO "A12"]
[BlackElo "2240"]
[PlyCount "72"]
[EventDate "1997.08.08"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. 0-0 e6 5. c4 Nbd7 6. b3 h6 7. Bb2 c6 8. d3 Bc5 9. Nbd2 0-0 10. h3 a5 11. Ne5 Nxe5 12. Bxe5 Bd6 13. Bb2 e5 14. cxd5 cxd5 15. Rc1 Re8 16. e4 Bg6 17. Qe2 Bb4 18. Nb1 dxe4 19. dxe4 Qe7 20. Nc3 Rac8 21. Rfd1 Red8 22. Nd5 Nxd5 23. Rxc8 Rxc8 24. Rxd5 Rc5 25. Qd1 Rxd5 26. Qxd5 Qc5 27. Qxe5 f6 28. Qb8+ Kh7 29. Qxb7 Be1 30. Kh2 Qxf2 31. Ba3 Qxg3+ 32. Kh1 Bh5 33. Qd5 Bg6 34. Bc5 Qe5 35. Bd4 Qxd5 36. exd5 Bb4 1-0

