[Event "Medellin de La Raza op"]
[Site "Medellin"]
[Date "2023.10.16"]
[Round "9"]
[White "Munoz Triana, Joseph Steve"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1912"]
[BlackElo "2068"]
[PlyCount "61"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 Nge7 7. Bd3 cxd4 8. cxd4 Nf5 9. Bxf5 exf5 10. Nc3 Be6 11. 0-0 h6 12. h4 Be7 13. b4 Rc8 14. Na4 Qd8 15. Nc5 b6 16. Nxe6 fxe6 17. h5 0-0 18. g3 b5 19. Qe2 Qb6 20. Be3 a5 21. Rfb1 axb4 22. axb4 Ra8 23. Rxa8 Rxa8 24. Ne1 Nxb4 25. Ng2 Rb8 26. Nf4 Bf8 27. g4 Qc6 28. gxf5 exf5 29. Qf3 Qc2 30. Rc1 Qe4 31. Qe2 1-0

[Event "Medellin de La Raza op"]
[Site "Medellin"]
[Date "2023.10.15"]
[Round "7"]
[White "Dominguez, Laura Lucia"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "1976"]
[BlackElo "2068"]
[PlyCount "98"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6 6. Be2 Ngf6 7. h3 e5 8. Qe3 Be7 9. 0-0 0-0 10. c4 b6 11. Nc3 Bb7 12. Rd1 Rc8 13. Rb1 Qc7 14. b4 b5 15. Nd2 Qc6 16. Nd5 Nxd5 17. cxd5 Qc3 18. Qxc3 Rxc3 19. Nb3 Bd8 20. Bb2 Rc2 21. Bd3 Rc8 22. f3 g6 23. Ra1 Nb6 24. Bc1 Na4 25. Be3 f5 26. Rdc1 fxe4 27. fxe4 Kg7 28. Nd2 Bh4 29. Nf3 Bd8 30. Ng5 Bxg5 31. Bxg5 Rf7 32. Rxc8 Bxc8 33. Rc1 Bb7 34. Be2 Nb2 35. Bd8 Kf8 36. Rc2 Nc4 37. Bxc4 bxc4 38. Rxc4 Ke8 39. Bb6 Kd7 40. Rc7+ Ke8 41. Rxf7 Kxf7 42. Bc7 Ke7 43. Kf2 Bc8 44. h4 Bd7 45. Ke3 Bb5 46. g3 h5 47. Kd2 Kd7 48. Bb8 Ba4 49. Kc3 Bb5 1/2-1/2

[Event "Medellin de La Raza op"]
[Site "Medellin"]
[Date "2023.10.15"]
[Round "8"]
[White "Ospina Castro, Santiago"]
[Black "Toro Castaneda, Elizabeth"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2068"]
[BlackElo "1959"]
[PlyCount "92"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. Bc4 Bg7 4. Qf3 e6 5. Nb5 d6 6. Qg3 Be5 7. f4 Bf6 8. Nf3 Nc6 9. 0-0 a6 10. Nxd6+ Qxd6 11. e5 Qd8 12. exf6 Nxf6 13. b3 0-0 14. Bb2 b5 15. Bd3 Nh5 16. Qf2 Bb7 17. Qxc5 Nxf4 18. Be4 Nd5 19. Nd4 Rc8 20. Nxc6 Rxc6 21. Qf2 f5 22. Qd4 Qb6 23. Bxd5 Qxd4+ 24. Bxd4 exd5 25. c3 Re6 26. Rfe1 Rfe8 27. Rxe6 Rxe6 28. Kf2 Kf7 29. Kf3 Re4 30. d3 Re8 31. a4 Bc6 32. axb5 Bxb5 33. c4 dxc4 34. dxc4 Bc6+ 35. Kf2 Bb7 36. g3 Rd8 37. Ke3 Rd7 38. b4 g5 39. Be5 Ke6 40. Ra5 Rd1 41. Bc3 Rf1 42. Re5+ Kd6 43. c5+ Kd7 44. Ke2 Bg2 45. Rd5+ Bxd5 46. Kxf1 g4 1/2-1/2

[Event "Medellin de La Raza op"]
[Site "Medellin"]
[Date "2023.10.14"]
[Round "6"]
[White "Ospina Castro, Santiago"]
[Black "Borre Meza, Orlando David"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2068"]
[BlackElo "1760"]
[PlyCount "53"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 e6 4. c4 Be7 5. e3 b6 6. cxd5 exd5 7. d4 0-0 8. Bd3 c5 9. 0-0 Bg4 10. h3 Bh5 11. dxc5 bxc5 12. Nbd2 Nc6 13. Rc1 Rc8 14. Bf5 Rc7 15. Qc2 Nb4 16. Qb1 Bg6 17. Bxg6 hxg6 18. Rfd1 Qc8 19. Ne5 Qe6 20. Nd3 Nxd3 21. Qxd3 Rd8 22. Qb5 Qb6 23. Qa4 c4 24. Bd4 Bc5 25. Bxf6 Qxf6 26. bxc4 d4 27. Ne4 1-0

[Event "Medellin de La Raza op"]
[Site "Medellin"]
[Date "2023.10.13"]
[Round "3"]
[White "Castro Lombana, Juan Pablo"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "D36"]
[WhiteElo "1674"]
[BlackElo "2068"]
[PlyCount "78"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 0-0 8. Nge2 Re8 9. 0-0 Nbd7 10. Qc2 Nf8 11. f3 Ng6 12. e4 dxe4 13. fxe4 Ng4 14. Bxe7 Qxe7 15. Qd2 c5 16. h3 Nf6 17. e5 cxd4 18. exf6 dxc3 19. Nxc3 gxf6 20. Bxg6 hxg6 21. Nd5 Qc5+ 22. Kh1 Re5 23. Nxf6+ Kg7 24. Qd8 Bxh3 25. Qxa8 Bxg2+ 26. Kh2 Bxf1 27. Qg8+ Kxf6 28. Rxf1+ Rf5 29. Qh8+ Ke7 30. Re1+ Kd7 31. Qe8+ Kc7 32. Re7+ Kb6 33. Qd8+ Ka6 34. Qd3+ b5 35. Re2 Rh5+ 36. Kg2 Qg5+ 37. Kf2 Rh2+ 38. Kf1 Rh1+ 39. Kf2 Qg1+ 0-1

[Event "Medellin de La Raza op"]
[Site "Medellin"]
[Date "2023.10.13"]
[Round "4"]
[White "Ospina Castro, Santiago"]
[Black "Palomino Escobar, Daniel Fernando"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "2068"]
[BlackElo "1865"]
[PlyCount "12"]
[EventDate "2023.10.12"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 1/2-1/2

[Event "COL-ch Students"]
[Site "Santa Fe"]
[Date "2023.09.25"]
[Round "5"]
[White "Ospina Castro, Santiago"]
[Black "Rojas Castillo, Leibnitz Edison"]
[Result "1-0"]
[ECO "B41"]
[WhiteElo "2069"]
[BlackElo "1918"]
[PlyCount "43"]
[EventDate "2023.09.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Nf6 6. Nc3 Bb4 7. Qd3 d5 8. exd5 exd5 9. Nc2 Bxc3+ 10. Qxc3 0-0 11. Be3 Ne4 12. Qd4 Qa5+ 13. b4 Qa4 14. Bd3 Nc6 15. Qb2 Be6 16. 0-0 Nd6 17. Bc5 Rfd8 18. cxd5 Bxd5 19. Ne3 Be6 20. Bc2 Qb5 21. a4 Nc4 22. Qc3 1-0

[Event "COL-ch Students"]
[Site "Santa Fe"]
[Date "2023.09.25"]
[Round "6"]
[White "Soto Gonzalez, Miguel Angel"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2359"]
[BlackElo "2069"]
[PlyCount "109"]
[EventDate "2023.09.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nce2 c5 6. c3 Nc6 7. Nf3 cxd4 8. cxd4 Qb6 9. a3 Be7 10. h4 Na5 11. Nf4 Nb3 12. Rb1 Qa5+ 13. Bd2 Nxd2 14. Qxd2 Qxd2+ 15. Kxd2 Nb6 16. Bd3 Bd7 17. h5 h6 18. Rh3 Rc8 19. Rg3 0-0 20. Ne2 Nc4+ 21. Bxc4 Rxc4 22. Ne1 Rfc8 23. Rc3 b5 24. b4 a5 25. Nd3 axb4 26. Nxb4 Ra8 27. Nc2 Kf8 28. Rcb3 Bd8 29. Kd3 Ba5 30. f4 Ke7 31. g4 f6 32. Ne3 Rcc8 33. exf6+ gxf6 34. f5 Bc7 35. fxe6 Bxe6 36. Nc3 Rd8 37. Rf1 Ra5 38. Nf5+ Bxf5+ 39. Rxf5 Ke6 40. Nxb5 Bd6 41. Ke2 Be7 42. Nc7+ Kf7 43. Rb5 Rxb5 44. Nxb5 Ke6 45. Nc7+ Kd7 46. Nxd5 Bxa3 47. Rxf6 Bc1 48. Kd3 Rg8 49. Rxh6 Bxh6 50. Nf6+ Ke6 51. Nxg8 Bg5 52. Ke4 Kf7 53. Kf5 Bd8 54. Nh6+ Kg7 55. g5 1-0

[Event "COL-ch Students"]
[Site "Santa Fe"]
[Date "2023.09.24"]
[Round "3"]
[White "Munoz Galvez, Jhon Edison"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "E06"]
[WhiteElo "2305"]
[BlackElo "2069"]
[PlyCount "54"]
[EventDate "2023.09.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 0-0 7. 0-0 c6 8. Qc2 b6 9. Bf4 Bb7 10. Nbd2 c5 11. dxc5 bxc5 12. cxd5 Nxd5 13. Bxb8 Rxb8 14. Rac1 Qa5 15. Nc4 Qa6 16. a3 Rfd8 17. Nfe5 Nb6 18. Bxb7 Rxb7 19. Nc6 Rc8 20. Nxe7+ Rxe7 21. Rfd1 h6 22. Nd6 Rc6 23. b4 Qa4 24. Qe4 Rd7 25. bxc5 Rxc5 26. Qxa4 Nxa4 27. Ne4 Rxc1 1/2-1/2

[Event "COL-ch Students"]
[Site "Santa Fe"]
[Date "2023.09.24"]
[Round "4"]
[White "Ospina Castro, Santiago"]
[Black "Llano Buritica, Eduardo Alejandro"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2069"]
[BlackElo "1913"]
[PlyCount "78"]
[EventDate "2023.09.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 g6 5. Nxd4 cxd4 6. Ne2 Bg7 7. 0-0 a6 8. Ba4 e6 9. d3 Ne7 10. f4 b5 11. Bb3 Qb6 12. Qe1 d6 13. a4 Rb8 14. axb5 axb5 15. Qa5 Qxa5 16. Rxa5 Nc6 17. Ra3 0-0 18. Bd2 Bd7 19. g4 Rfe8 20. g5 h6 21. h4 hxg5 22. hxg5 Ra8 23. Rfa1 Rab8 24. Kf2 Rec8 25. Ra6 Rc7 26. Ra8 Rxa8 27. Rxa8+ Rc8 28. Ra6 Bf8 29. Nc1 Be7 30. Na2 Kf8 31. Nb4 d5 32. Nxc6 Bxc6 33. e5 Ke8 34. Ra7 Bc5 35. Ra6 Kd7 36. Kg2 Ra8 37. Rxa8 Bxa8 38. Be1 Bc6 39. Bf2 Ba8 1/2-1/2

[Event "COL-ch Students"]
[Site "Santa Fe"]
[Date "2023.09.23"]
[Round "2"]
[White "Diaz Larrea, Juan Manuel"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "1905"]
[BlackElo "2069"]
[PlyCount "52"]
[EventDate "2023.09.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. 0-0 Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Bd7 11. c3 Qc7 12. Bb5 Bc5 13. Bxd7+ Qxd7 14. Nb3 Bd6 15. Qf3 Qc7 16. Kh1 0-0 17. Bg5 Be5 18. Bh4 Rfd8 19. Bg3 Bxg3 20. hxg3 Rd7 21. Rfd1 Rad8 22. Rd4 Rxd4 23. cxd4 Qc2 24. Kg1 Nd5 25. Qd1 Qxb2 26. Nc5 Nc3 0-1

[Event "COL-ch Students"]
[Site "Santa Fe"]
[Date "2023.09.23"]
[Round "1"]
[White "Ospina Castro, Santiago"]
[Black "Barrios Gonzalez, Jesus David"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2069"]
[BlackElo "1566"]
[PlyCount "51"]
[EventDate "2023.09.23"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 Nf6 4. e5 Nfd7 5. d4 c5 6. dxc5 Bxc5 7. Bd3 Nc6 8. Bf4 a6 9. 0-0 f6 10. exf6 Nxf6 11. Qe2 0-0 12. Ne5 Qe8 13. Bg3 Nh5 14. Rae1 Nxg3 15. hxg3 Nxe5 16. Qxe5 Bd7 17. Nxd5 Qf7 18. Nf6+ gxf6 19. Qxc5 Rae8 20. Re4 f5 21. Re5 Rc8 22. Qe3 f4 23. Rg5+ Kh8 24. Qe5+ Qf6 25. gxf4 Ba4 26. Qe4 1-0

[Event "Bucaramanga op"]
[Site "Bucaramanga"]
[Date "2023.09.10"]
[Round "8"]
[White "Negron Arias, Juan Carlos"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "1872"]
[BlackElo "2069"]
[PlyCount "48"]
[EventDate "2023.09.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. Qc2 h6 7. Bh4 g6 8. e3 Bf5 9. Bd3 Bxd3 10. Qxd3 Be7 11. Nge2 0-0 12. 0-0 Nbd7 13. f3 Re8 14. e4 dxe4 15. fxe4 Nc5 16. Qf3 Ncxe4 17. Nxe4 Nxe4 18. Qxf7+ Kh8 19. Qxg6 Qd6 20. Qxe4 Bg5 21. Qg4 Bxh4 22. Qxh4 Rxe2 23. Rf6 Qe7 24. Rxh6+ Kg8 1-0

[Event "Bucaramanga op"]
[Site "Bucaramanga"]
[Date "2023.09.10"]
[Round "9"]
[White "Ospina Castro, Santiago"]
[Black "Brito Carrascal, Isabela"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2069"]
[BlackElo "1708"]
[PlyCount "57"]
[EventDate "2023.09.06"]
[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 b6 3. Bb2 Bb7 4. e3 e6 5. Be2 Be7 6. 0-0 0-0 7. c4 d5 8. d4 Nbd7 9. Nc3 c5 10. Rc1 Rc8 11. Qc2 cxd4 12. Nxd4 a6 13. Qb1 dxc4 14. Bxc4 b5 15. Bxe6 fxe6 16. Nxe6 Qb6 17. Nxf8 Bxf8 18. Ne2 Rxc1 19. Qxc1 h5 20. Rd1 Nc5 21. Qd2 Qc6 22. f3 h4 23. Nf4 Bc8 24. Ng6 Nfe4 25. Qd5+ Qxd5 26. Rxd5 Nf6 27. Bxf6 gxf6 28. Nxf8 Kxf8 29. Rxc5 1-0

[Event "Bucaramanga op"]
[Site "Bucaramanga"]
[Date "2023.09.08"]
[Round "5"]
[White "Ospina Castro, Santiago"]
[Black "Rojas Barrero, Andres Humberto"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2069"]
[BlackElo "2135"]
[PlyCount "68"]
[EventDate "2023.09.06"]
[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 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6 6. 0-0 0-0 7. Nbd2 d6 8. Bb3 Be6 9. h3 Bxb3 10. Qxb3 Qd7 11. Re1 Kh8 12. Nf1 Nh5 13. Be3 Bxe3 14. Nxe3 Nf4 15. Rad1 f6 16. Kh2 b6 17. Ng1 g5 18. g3 Ng6 19. Ne2 Nce7 20. g4 Nh4 21. Kh1 Nf3 22. Rf1 h5 23. Kg2 Nh4+ 24. Kg3 Neg6 25. Nf5 Nf4 26. Qc2 Nxf5+ 27. gxf5 Rg8 28. Nxf4 gxf4+ 29. Kh2 Rg5 30. Rg1 Rag8 31. Rxg5 Rxg5 32. Qe2 Qg7 33. Qc2 Qd7 34. f3 Rg8 1/2-1/2

[Event "Bucaramanga op"]
[Site "Bucaramanga"]
[Date "2023.09.08"]
[Round "6"]
[White "Zuluaga Mancilla, Cesar"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2246"]
[BlackElo "2069"]
[PlyCount "121"]
[EventDate "2023.09.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. Bf4 Nf6 4. e3 c5 5. c3 Nc6 6. Nbd2 Bd6 7. Bg3 0-0 8. Bd3 b6 9. Ne5 Bb7 10. 0-0 Ne7 11. Qf3 Ng6 12. Qe2 Ne4 13. f4 f6 14. Nxg6 hxg6 15. Nxe4 dxe4 16. Bc4 Qe7 17. Qg4 Kf7 18. f5 gxf5 19. Qxf5 Bxg3 20. Qh5+ Kg8 21. hxg3 Qf7 22. Qg4 Bd5 23. Bb3 Bxb3 24. axb3 f5 25. Qf4 cxd4 26. exd4 Qf6 27. Ra4 g5 28. Qe3 Qg6 29. Raa1 Rf7 30. b4 Raf8 31. Rae1 Rh7 32. Kf2 Rh2 33. Rg1 Qh5 34. Re2 Qg4 35. Ke1 Rf7 36. Kd2 Rfh7 37. c4 Kg7 38. c5 Kg6 39. c6 Rc7 40. Rc1 Qh5 41. Qb3 Kf6 42. d5 exd5 43. Qxd5 Qf7 44. Qd4+ Kg6 45. g4 Rh4 46. Qd6+ Kg7 47. gxf5 Rf4 48. Qe5+ Kg8 49. Rh1 Rh4 50. Rxh4 gxh4 51. b5 Re7 52. Qd6 Re8 53. Qg6+ Qxg6 54. fxg6 Kg7 55. Ke3 Kxg6 56. Kf4 Kf6 57. Rxe4 Rc8 58. Ra4 Rc7 59. Kg4 Ke5 60. Rc4 Kd5 61. b3 1-0

[Event "Bucaramanga op"]
[Site "Bucaramanga"]
[Date "2023.09.07"]
[Round "3"]
[White "Ospina Castro, Santiago"]
[Black "Cabiativa, Juan Esteban"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2069"]
[BlackElo "2080"]
[PlyCount "47"]
[EventDate "2023.09.06"]
[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 d5 2. b3 Bg4 3. g3 Bxf3 4. exf3 h5 5. h4 e6 6. Bb2 Nc6 7. f4 Nf6 8. d3 g6 9. Nd2 Bg7 10. Nf3 d4 11. Bg2 Qd6 12. 0-0 Ng4 13. Ng5 0-0 14. Ne4 Qe7 15. Re1 Nb4 16. a4 Rfd8 17. Ba3 a5 18. Qd2 c5 19. Bxb4 cxb4 20. Qd1 Rac8 21. Nd2 Rc5 22. Nc4 Qc7 23. Qf3 Rd7 24. Qd1 1/2-1/2

[Event "Bucaramanga op"]
[Site "Bucaramanga"]
[Date "2023.09.07"]
[Round "4"]
[White "Rueda Rojas, Richard Alejandro"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1867"]
[BlackElo "2069"]
[PlyCount "78"]
[EventDate "2023.09.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 c5 2. Bf4 Nf6 3. e3 e6 4. c3 cxd4 5. exd4 b6 6. Nd2 Bb7 7. Ngf3 Nh5 8. Bg5 Be7 9. Bxe7 Qxe7 10. Bc4 Nf4 11. 0-0 0-0 12. Re1 Nc6 13. Bf1 d6 14. a4 Qc7 15. Nb3 a6 16. Nc1 Na5 17. Nd3 Ng6 18. Nb4 Nc4 19. Nd2 Nxd2 20. Qxd2 a5 21. Nc2 e5 22. dxe5 dxe5 23. Ne3 Rad8 24. Qc2 Nf4 25. Nc4 e4 26. Qb3 Nd5 27. Rxe4 Nxc3 28. Rh4 Nd5 29. Re1 Nb4 30. Re3 Rfe8 31. Reh3 h6 32. Rg3 Kh7 33. Rhg4 g6 34. Nxb6 Re1 35. Nc4 Rdd1 36. Ne3 Rd3 37. Qc4 Qxc4 38. Rxc4 Ba6 39. Rc7 Rdxe3 0-1

[Event "Bucaramanga op"]
[Site "Bucaramanga"]
[Date "2023.09.06"]
[Round "2"]
[White "Brizuela Abreu, Ronald Jesus"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2333"]
[BlackElo "2069"]
[PlyCount "44"]
[EventDate "2023.09.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bf4 0-0 6. e3 b6 7. cxd5 Nxd5 8. Nxd5 exd5 9. Bd3 c5 10. dxc5 bxc5 11. 0-0 Nc6 12. Rc1 Be6 13. Bb5 Qb6 14. Qa4 Rfc8 15. Rfd1 a6 16. Bxc6 Qxc6 17. Qxc6 Rxc6 18. Nd4 Rb6 19. Nxe6 fxe6 20. Rc2 c4 21. e4 Rb5 22. g3 Bf6 1/2-1/2

[Event "Bucaramanga op"]
[Site "Bucaramanga"]
[Date "2023.09.06"]
[Round "1"]
[White "Ospina Castro, Santiago"]
[Black "Suarez Aldana, Eduard Davis"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "2069"]
[BlackElo "1740"]
[PlyCount "27"]
[EventDate "2023.09.06"]
[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 d6 3. d4 g6 4. Bb2 Bg7 5. g3 0-0 6. Bg2 d5 7. 0-0 Nc6 8. c4 Bg4 9. Ne5 Nxe5 10. dxe5 Nd7 11. cxd5 Nxe5 12. Nc3 Qc8 13. f4 Nd7 14. h3 1-0

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.07"]
[Round "8"]
[White "Marin, Sebastian"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "B67"]
[WhiteElo "2294"]
[BlackElo "2041"]
[PlyCount "56"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f3 Nxd4 10. Qxd4 Be7 11. Kb1 Qc7 12. Qd2 b5 13. Bd3 b4 14. Ne2 a5 15. Nd4 Rb8 16. h4 h6 17. Be3 h5 18. Bg5 a4 19. f4 e5 20. fxe5 dxe5 21. Bxf6 gxf6 22. Nf5 Bxf5 23. exf5 a3 24. Qe2 Qb6 25. Bc4 Bc5 26. Rd5 Bd4 27. Rd1 Kf8 28. b3 Qc7 1/2-1/2

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.07"]
[Round "9"]
[White "Pinero Rodriguez, Carlos Jose"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "B68"]
[WhiteElo "2246"]
[BlackElo "2041"]
[PlyCount "53"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 Be7 10. Nf3 b5 11. a3 h6 12. Bh4 g5 13. fxg5 Ng4 14. g3 hxg5 15. Bxg5 Rxh2 16. Be2 Nce5 17. Qf4 Rxh1 18. Rxh1 Qb6 19. Nxe5 Nxe5 20. Rh8+ Bf8 21. Bh5 Qg1+ 22. Nd1 Rc8 23. Kb1 b4 24. Qf6 Ng6 25. Bxg6 Qxd1+ 26. Ka2 b3+ 27. cxb3 1-0

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.06"]
[Round "7"]
[White "Ospina Castro, Santiago"]
[Black "Cordoba Roa, Angel Gabriel"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2041"]
[BlackElo "2258"]
[PlyCount "88"]
[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. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 a5 7. Nbd2 0-0 8. h3 Ba7 9. Re1 h6 10. Nf1 Re8 11. Ng3 Be6 12. Bb5 Bd7 13. a4 Ne7 14. Bxd7 Qxd7 15. d4 Nc6 16. dxe5 dxe5 17. Qb3 Red8 18. Be3 Bxe3 19. Rxe3 Qe6 20. Qb5 Ne8 21. Ree1 Nd6 22. Qd5 Nc4 23. Qxe6 fxe6 24. b3 Nd2 25. Nxd2 Rxd2 26. Kf1 Rad8 27. Re2 R2d3 28. Rc1 Nb8 29. Rec2 Nd7 30. Ke2 Nc5 31. Rb1 c6 32. f3 b5 33. Nf1 bxa4 34. b4 axb4 35. cxb4 Nb3 36. Rxc6 R3d6 37. Rxd6 Rxd6 38. Rb2 Nc1+ 39. Ke3 Rd3+ 40. Kf2 Rc3 41. Rb1 a3 42. Ra1 Nd3+ 43. Ke2 Nxb4 44. Ne3 Rxe3+ 0-1

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.06"]
[Round "6"]
[White "Ospina Castro, Santiago"]
[Black "Esmeraldas Huachi, Anderson Yahir"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2041"]
[BlackElo "2141"]
[PlyCount "99"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. Be3 Be6 10. Bf3 Nbd7 11. a4 Nb6 12. Nd2 Rc8 13. a5 Nc4 14. Nxc4 Rxc4 15. Nd5 Nxd5 16. exd5 Bf5 17. c3 Rc8 18. Qd2 Bg6 19. b4 f5 20. Rac1 Qd7 21. Bg5 e4 22. Be2 Bxg5 23. Qxg5 f4 24. Qg4 Qd8 25. c4 Kh8 26. Rfd1 Qf6 27. c5 f3 28. gxf3 exf3 29. Bf1 Qb2 30. Qd4 Qb3 31. c6 bxc6 32. dxc6 Bc2 33. Bc4 Qa4 34. Rd2 Bg6 35. Bxa6 Rxc6 36. Rxc6 Qxc6 37. Qxd6 Qc1+ 38. Rd1 Qg5+ 39. Qg3 Qe7 40. Rd4 Rf5 41. Bf1 h5 42. h4 Kh7 43. Rd6 Rf6 44. Rxf6 Qxf6 45. a6 Be4 46. Qg5 Qf7 47. b5 Bg6 48. b6 Qb3 49. b7 Qb4 50. Qg3 1-0

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.05"]
[Round "5"]
[White "Cuervo Velasquez, Juan Manuel"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "1750"]
[BlackElo "2041"]
[PlyCount "57"]
[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 e6 2. Nf3 d5 3. g3 dxc4 4. Qa4+ Nd7 5. Qxc4 a6 6. a4 b5 7. Qc2 Bb7 8. Bg2 c5 9. 0-0 Ngf6 10. d3 Be7 11. e3 0-0 12. Qe2 Qb6 13. Bd2 Rac8 14. axb5 axb5 15. Ba5 Qa7 16. Nc3 Qb8 17. Rfc1 b4 18. Nb1 Bd5 19. e4 Bc6 20. Nbd2 Qb5 21. Nc4 Bb7 22. Nfd2 Nb8 23. e5 Nfd7 24. Nb6 Nxb6 25. Bxb7 Rce8 26. Bxb6 Qxb6 27. Qe4 Rd8 28. Nc4 Qc7 29. Ra7 0-1

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.05"]
[Round "4"]
[White "Palencia Morales, Wilson Guillermo"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2283"]
[BlackElo "2041"]
[PlyCount "118"]
[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. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. exd6 Qxd6 7. Nc3 Nc6 8. Be3 Bf5 9. Nf3 e6 10. Bb5 Be7 11. 0-0 0-0 12. Rc1 Rac8 13. h3 Rfd8 14. Qd2 a6 15. Be2 Nxc3 16. bxc3 Qa3 17. Bf4 Bf6 18. Rfe1 b5 19. Qe3 h6 20. g4 Bg6 21. h4 Be7 22. h5 Bh7 23. g5 hxg5 24. Nxg5 Bf5 25. Qg3 Bd6 26. Bg4 Bxf4 27. Qxf4 Ne7 28. h6 gxh6 29. Bxf5 Nxf5 30. Ne4 Qe7 31. Qe5 Qc7 32. Nf6+ Kh8 33. Qe4 Qc6 34. d5 Qc4 35. Qe5 Qc7 36. Qe4 Qc4 37. Qe5 Qc7 38. dxe6 Qxe5 39. Rxe5 fxe6 40. Rxe6 Rd6 41. Rxd6 Nxd6 42. Rd1 Rc6 43. Kg2 Nf5 44. Ne4 Kg7 45. Kf3 Kf7 46. Kf4 Ne7 47. Rd7 Ke6 48. Rd3 Nd5+ 49. Kg4 Ke5 50. f3 Rg6+ 51. Kh4 Rg2 52. a4 bxa4 53. c4 Ne7 54. Ra3 Rc2 55. c5 Kf4 56. Kh3 Nc6 57. Rxa4 Kxf3 58. Rxa6 Nd4 59. Ng3 Rxc5 1/2-1/2

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.04"]
[Round "3"]
[White "Ospina Castro, Santiago"]
[Black "Loaiza Cuervo, Santiago"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2041"]
[BlackElo "2079"]
[PlyCount "16"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 1/2-1/2

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.04"]
[Round "2"]
[White "Rios Parra, Alejandro"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "B67"]
[WhiteElo "2198"]
[BlackElo "2041"]
[PlyCount "131"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f3 Be7 10. h4 h6 11. Be3 h5 12. Bg5 Ne5 13. Qe1 0-0 14. Be2 Re8 15. Bxf6 Bxf6 16. f4 Ng4 17. Bxg4 hxg4 18. e5 dxe5 19. fxe5 Be7 20. Qg3 Qa5 21. Nb3 Qc7 22. Qxg4 Bc6 23. Rhe1 b5 24. Nd4 Bb7 25. Kb1 Rad8 26. a3 Bf8 27. Ne4 Bxe4 28. Qxe4 Qc4 29. Rd3 Bc5 30. Nf3 Qxe4 31. Rxe4 Rxd3 32. cxd3 Rd8 33. Kc2 Kf8 34. d4 Bb6 35. Kd3 Ke7 36. Re2 f6 37. g4 Rd5 38. exf6+ gxf6 39. Ke4 Rd8 40. g5 fxg5 41. hxg5 Rh8 42. Rh2 Rxh2 43. Nxh2 Kf7 44. Nf3 Bc7 45. d5 exd5+ 46. Kxd5 Bf4 47. b3 Bc1 48. a4 bxa4 49. bxa4 Ba3 50. Ne5+ Kg7 51. Ke6 Bc1 52. Kf5 Bb2 53. Nd3 Bc3 54. Nf4 a5 55. Ne6+ Kf7 56. g6+ Kg8 57. Ke4 Kh8 58. Kd5 Kg8 59. Kc4 Be1 60. Kb5 Kh8 61. Nd8 Kg7 62. Nc6 Kxg6 63. Nxa5 Kf7 64. Nc6 Ke8 65. Nb4 Bxb4 66. Kxb4 1/2-1/2

[Event "Medellin Flores op 30th"]
[Site "Medellin"]
[Date "2023.08.03"]
[Round "1"]
[White "Ospina Castro, Santiago"]
[Black "Ayala Delgado, Sergio Alejandro"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2041"]
[BlackElo "1804"]
[PlyCount "45"]
[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. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 0-0 7. Bb3 a5 8. h3 h6 9. Re1 Re8 10. Nbd2 Ba7 11. Nf1 Ne7 12. Ng3 Ng6 13. d4 Bd7 14. a4 c6 15. Be3 Qc7 16. Qd2 Rad8 17. Bxh6 gxh6 18. Qxh6 Be6 19. Nf5 Nh5 20. Qxh5 Bxf5 21. exf5 Nf4 22. Qh6 Qe7 23. Ng5 1-0

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.07.03"]
[Round "8"]
[White "Ospina Castro, Santiago"]
[Black "Ruiz Aguilar, Pablo Alexander"]
[Result "1/2-1/2"]
[ECO "B49"]
[WhiteElo "2005"]
[BlackElo "2227"]
[PlyCount "131"]
[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nf6 7. 0-0 Nc6 8. Be3 b5 9. Nxc6 dxc6 10. Qd3 Bb7 11. Bg5 Rd8 12. Qe3 Be7 13. e5 Nd5 14. Nxd5 cxd5 15. Bxe7 Qxe7 16. Rfd1 Rc8 17. Rd2 0-0 18. a3 Qc5 19. Qxc5 Rxc5 20. c3 Rb8 21. Rd4 Bc6 22. Kf1 f6 23. f4 Rf8 24. Bf3 g5 25. Re1 gxf4 26. Rxf4 Rc4 27. Rd4 fxe5 28. Rxe5 Rxd4 29. cxd4 Bd7 30. Re3 Rf4 31. Rd3 Kf7 32. Kf2 Ke7 33. Ke3 Rh4 34. h3 Kd6 35. Bg4 Rh6 36. Rd2 Rg6 37. Rf2 Ke7 38. Be2 Rg3+ 39. Bf3 Rg8 40. Be2 Be8 41. g4 Bg6 42. Bd3 Rc8 43. Bxg6 hxg6 44. h4 Rc1 45. Rh2 Kf7 46. Kf4 Kf6 47. h5 Rf1+ 48. Ke3 gxh5 49. gxh5 Kg7 50. Rc2 Kh6 51. Rc6 Kxh5 52. Kd2 Rf4 53. Rxe6 Rxd4+ 54. Kc3 Rc4+ 55. Kd3 Kg4 56. Rxa6 b4 57. axb4 Kf5 58. b5 Ke5 59. Ra8 Rb4 60. Re8+ Kd6 61. Rd8+ Ke6 62. Rb8 Rxb2 63. b6 Rb4 64. b7 Kd7 65. Rh8 Rxb7 66. Kd4 1/2-1/2

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.07.02"]
[Round "6"]
[White "Ospina Castro, Santiago"]
[Black "Leon Acevedo, Juan Alejandro"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2005"]
[BlackElo "1918"]
[PlyCount "64"]
[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 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nab1 Be7 10. Bxf6 Bxf6 11. a4 b4 12. Nd5 0-0 13. Bc4 Be6 14. 0-0 a5 15. c3 Rb8 16. Bb5 Bxd5 17. Qxd5 Ne7 18. Qb3 bxc3 19. Nxc3 Nc6 20. Nd5 Nd4 21. Qd3 Bg5 22. g3 Rb7 23. Rab1 Qb8 24. b4 Bd2 25. bxa5 Bxa5 26. Kg2 Qa7 27. Rfc1 Rfb8 28. Qa3 Bd2 29. Rd1 Nxb5 30. Qd3 Nc3 31. Rxb7 Qxb7 32. Rxd2 Nxa4 1/2-1/2

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.07.02"]
[Round "7"]
[White "Toro Ramirez, Samuel"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "B67"]
[WhiteElo "1769"]
[BlackElo "2005"]
[PlyCount "112"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f3 Be7 10. Kb1 0-0 11. h4 h6 12. Be3 h5 13. Bd3 Ne5 14. Rdg1 b5 15. g4 b4 16. Nd1 hxg4 17. f4 Nxd3 18. cxd3 e5 19. Ne2 Qa5 20. Nf2 Rfd8 21. d4 exd4 22. Nxd4 d5 23. e5 Ne4 24. Qe2 Nxf2 25. Qxf2 Bc5 26. f5 Bxd4 27. Bxd4 b3 28. a3 Qb5 29. Rd1 Qc6 30. Rhf1 Qc2+ 31. Qxc2 bxc2+ 32. Kxc2 Rdc8+ 33. Kd2 Rc4 34. Ke3 Rac8 35. Kf4 Kh7 36. h5 Rb8 37. Kg5 Ba4 38. Rd2 Bc2 39. Rc1 Rbc8 40. Bc3 Be4 41. Rg1 Bf3 42. e6 fxe6 43. fxe6 Re8 44. Kf5 Re4 45. Rxd5 R4xe6 46. Rd7 R6e7 47. Rd6 Be2 48. Kg5 Re6 49. Rd7 R8e7 50. Rd8 Re3 51. Rh1 Rh3 52. Rg1 g3 53. Kf4 Rf7+ 54. Ke3 Bxh5 55. Be5 g2+ 56. Ke4 Rh1 0-1

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.30"]
[Round "5"]
[White "Giraldo, Emanuel"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1812"]
[BlackElo "2005"]
[PlyCount "28"]
[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 c5 2. e3 Nf6 3. b3 g6 4. Bb2 Bg7 5. c4 0-0 6. Be2 d5 7. 0-0 d4 8. exd4 Ne8 9. d3 cxd4 10. Re1 Nc6 11. Bf1 Nc7 12. Na3 e5 13. Nc2 a5 14. a3 Re8 1/2-1/2

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.30"]
[Round "4"]
[White "Ospina Castro, Santiago"]
[Black "Ocampo Betancur, Cristina Angela"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2005"]
[BlackElo "1919"]
[PlyCount "30"]
[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 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 h6 7. Bb3 0-0 8. Nbd2 a6 9. h3 Ba7 10. Re1 Re8 11. Nf1 Ne7 12. Ng3 Ng6 13. d4 c6 14. Be3 Qc7 15. Qd2 Kh7 1/2-1/2

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.29"]
[Round "2"]
[White "Ospina Castro, Santiago"]
[Black "Hernandez Bermudez, Manuela"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2005"]
[BlackElo "1883"]
[PlyCount "91"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. Be3 Be6 10. Qd3 Nbd7 11. Nd5 Bxd5 12. exd5 b6 13. c4 a5 14. Nd2 Ne8 15. Bd1 f5 16. f3 Bg5 17. Ba4 Nc5 18. Bxc5 bxc5 19. g3 g6 20. Rae1 Ng7 21. Nb1 h5 22. Nc3 h4 23. g4 Ra7 24. Bc2 Raf7 25. Kh1 Kh8 26. Rg1 Ne8 27. gxf5 gxf5 28. Rg2 Rg7 29. Reg1 Qf6 30. Ne2 Bh6 31. Qc3 Rfg8 32. Rxg7 Rxg7 33. Qxa5 Rxg1+ 34. Nxg1 Be3 35. Qe1 Bd4 36. Nh3 Bxb2 37. Qb1 e4 38. fxe4 fxe4 39. Bxe4 Qc3 40. Qf1 Nf6 41. Bd3 Qd2 42. Nf4 Ng4 43. Ng6+ Kh7 44. Ne5+ Kh6 45. Qf8+ Kh5 46. Qf7+ 1-0

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.29"]
[Round "3"]
[White "Prasca Sosa, Rafael Felipe"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2310"]
[BlackElo "2005"]
[PlyCount "35"]
[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 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Nc6 5. Bd3 g6 6. Bc2 Bg7 7. 0-0 0-0 8. Re1 e5 9. d4 cxd4 10. cxd4 exd4 11. Nxd4 d5 12. e5 Nd7 13. f4 Qb6 14. Be3 Qxb2 15. Nb3 Nb4 16. Re2 Nxe5 17. fxe5 Nxc2 18. Bd4 1-0

[Event "Sabaneta op-A 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.28"]
[Round "1"]
[White "Cori, Jorge Moise"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "2636"]
[BlackElo "2005"]
[PlyCount "57"]
[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 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. 0-0 Ngf6 6. Qe2 e6 7. c3 Be7 8. d4 cxd4 9. cxd4 0-0 10. Nc3 Nb6 11. b3 Rc8 12. Bd2 d5 13. e5 Nfd7 14. a4 Nb8 15. a5 Na8 16. Rfc1 Qd7 17. h4 Rc6 18. Qd3 Rfc8 19. Ng5 Bxg5 20. hxg5 Nc7 21. g4 a6 22. Kg2 Nb5 23. Rh1 Nxc3 24. Qxh7+ Kf8 25. Qh8+ Ke7 26. Qxg7 Ne4 27. g6 Kd8 28. gxf7 Kc7 29. Bb4 1-0

[Event "Medellin Easter op 11th"]
[Site "Medellin"]
[Date "2023.04.09"]
[Round "7"]
[White "Ortiz Monsalve, Sebastian"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "1768"]
[BlackElo "2003"]
[PlyCount "62"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 e5 7. Nb3 Be6 8. Be3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Qxd5 Bxd5 12. 0-0-0 0-0-0 13. Bd3 Be7 14. c3 g6 15. Kc2 f5 16. Rhe1 Bf6 17. Bf2 Rhe8 18. Nd2 Bg8 19. Bc4 Rxd2+ 20. Rxd2 Bxc4 21. Red1 e4 22. Re1 Bd3+ 23. Kb3 Rd8 24. fxe4 fxe4 25. Be3 Na5+ 26. Ka4 Nc4 27. Rf2 b5+ 28. Kb3 Be7 29. a4 bxa4+ 30. Kxa4 Nxe3 31. Rxe3 Bc5 0-1

[Event "Medellin Easter op 11th"]
[Site "Medellin"]
[Date "2023.04.09"]
[Round "6"]
[White "Penate, Aldair"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "E11"]
[WhiteElo "1856"]
[BlackElo "2003"]
[PlyCount "146"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. g3 Bb4+ 5. Nbd2 0-0 6. a3 Be7 7. Bg2 b6 8. 0-0 Bb7 9. Qc2 Nbd7 10. b3 c5 11. Bb2 Rc8 12. e3 dxc4 13. bxc4 Qc7 14. Ne5 Bxg2 15. Kxg2 cxd4 16. Nxd7 Qxd7 17. exd4 Rfd8 18. Rfd1 b5 19. c5 Qb7+ 20. Kg1 h5 21. Qb3 h4 22. Qf3 Qxf3 23. Nxf3 hxg3 24. hxg3 Nd5 25. Rac1 Bf6 26. Nd2 Ne7 27. Ne4 Rd5 28. Nd6 Rb8 29. Bc3 Nc6 30. Kg2 Be7 31. Ne4 f5 32. Nd2 Nxd4 33. Bxd4 Rxd4 34. Nb3 Rc4 35. Rxc4 bxc4 36. Na5 Bxc5 37. Nxc4 Rb3 38. Rd8+ Kh7 39. Rc8 Bd4 40. f4 Rc3 41. Nd6 Rxa3 42. Nf7 Ra2+ 43. Kh3 Bf6 44. Ra8 a5 45. Nd6 a4 46. Nc4 Be7 47. Ra7 Bc5 48. Ra5 Bb4 49. Rb5 Be1 50. Rb1 Bc3 51. g4 Ra1 52. Rb6 fxg4+ 53. Kxg4 a3 54. Nxa3 Rxa3 55. Rxe6 Bf6 56. Rc6 Ra4 57. Kf5 Ra5+ 58. Kg4 Ra4 59. Kf5 Kh6 60. Rb6 Kh5 61. Rb5 Bc3 62. Ke6+ Kg4 63. f5 Bf6 64. Kf7 Kg5 65. Ke6 Ra7 66. Kd6 Re7 67. Ra5 Re1 68. Kd7 Re5 69. Ra2 Kxf5 70. Rf2+ Kg6 71. Rg2+ Kf7 72. Rf2 g5 73. Kd6 g4 0-1

[Event "Medellin Easter op 11th"]
[Site "Medellin"]
[Date "2023.04.08"]
[Round "5"]
[White "Ospina Castro, Santiago"]
[Black "Hernandez Serrano, Cristhian Daniel"]
[Result "1-0"]
[ECO "B60"]
[WhiteElo "2003"]
[BlackElo "1795"]
[PlyCount "55"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Nxc6 bxc6 8. Bc4 Qa5 9. Bd2 Qc7 10. Qe2 Rb8 11. 0-0-0 Qb7 12. Bb3 Be6 13. e5 Bxb3 14. axb3 dxe5 15. Qxe5 Nd7 16. Qe2 Nc5 17. Bf4 Rc8 18. Rhe1 Ne6 19. Be5 Rg8 20. f4 g6 21. Kb1 Bg7 22. f5 Bxe5 23. Qxe5 gxf5 24. Qxf5 Rg6 25. Rf1 Rg7 26. Rd3 Nf8 27. Ne4 Rd8 28. Nf6+ 1-0

[Event "Medellin Easter op 11th"]
[Site "Medellin"]
[Date "2023.04.07"]
[Round "4"]
[White "Vilanova Ramos, Juan Manuel"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1664"]
[BlackElo "2003"]
[PlyCount "58"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 c5 4. c3 Nc6 5. e3 e6 6. Nbd2 Bd6 7. dxc5 Bxc5 8. Bb5 0-0 9. Nb3 Be7 10. Ne5 Nxe5 11. Bxe5 Bd7 12. Bd3 b5 13. 0-0 a5 14. Qe2 Qb6 15. Nd4 b4 16. Rfc1 Rfc8 17. Nb5 Ne4 18. cxb4 axb4 19. Rxc8+ Rxc8 20. Bxe4 dxe4 21. a4 bxa3 22. Nxa3 f6 23. Bc3 Qb3 24. Qc2 Qb7 25. Qd2 e5 26. Rd1 Be6 27. h3 Qb3 28. Qc2 Bxa3 29. Qxb3 Bxb3 0-1

[Event "Medellin Easter op 11th"]
[Site "Medellin"]
[Date "2023.04.06"]
[Round "2"]
[White "Guerrero, Hernando"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "B59"]
[WhiteElo "1690"]
[BlackElo "2003"]
[PlyCount "35"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. a3 a5 10. Be3 a4 11. Nd2 Nd4 12. Nf3 Nxf3+ 13. Bxf3 Qa5 14. Bg5 Rd8 15. Bxf6 Bxf6 16. Nd5 Bg5 17. b4 axb3 18. cxb3 1-0

[Event "Medellin Easter op 11th"]
[Site "Medellin"]
[Date "2023.04.06"]
[Round "3"]
[White "Ospina Castro, Santiago"]
[Black "Londono, Miguel Angel"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2003"]
[PlyCount "51"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. b3 Qe8 10. Nf3 Bg4 11. Be2 e6 12. h3 Bxf3 13. Bxf3 Nc6 14. 0-0 Qd7 15. d5 Ne5 16. Be2 exd5 17. Nxd5 Nxd5 18. Qxd5 Qc6 19. Rfd1 Rfd8 20. f4 Nd7 21. Qxc6 bxc6 22. Rxd6 Re8 23. Rxd7 Rxe3 24. Bf3 Bh6 25. Bxc6 Rae8 26. Rxa7 1-0

[Event "Medellin Easter op 11th"]
[Site "Medellin"]
[Date "2023.04.05"]
[Round "1"]
[White "Ospina Castro, Santiago"]
[Black "Garcia Ospina, Sebastian"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2003"]
[BlackElo "1261"]
[PlyCount "57"]
[EventDate "2023.04.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 Bg4 7. h3 Bxf3 8. Bxf3 e5 9. Ne2 Nc6 10. c3 Re8 11. Ng3 Qd7 12. Be3 h5 13. Qc2 Nh7 14. Rad1 h4 15. Ne2 f5 16. exf5 gxf5 17. dxe5 Bxe5 18. Qb3+ Kg7 19. Qxb7 Ne7 20. Qb4 Rab8 21. Qxh4 Qe6 22. Nd4 Qf6 23. Qxf6+ Kxf6 24. b3 c5 25. Nc6 Nxc6 26. Bxc6 Rg8 27. f4 Rg3 28. fxe5+ Kxe5 29. Bf4+ 1-0

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.12.01"]
[Round "10"]
[White "Giraldo, Emanuel"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "1766"]
[BlackElo "2041"]
[PlyCount "48"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. Be2 Nh6 7. Bxh6 gxh6 8. Qd2 Bg7 9. 0-0 0-0 10. Na3 cxd4 11. cxd4 Bd7 12. Nc2 a5 13. Rfe1 f6 14. exf6 Rxf6 15. Bf1 Raf8 16. b4 axb4 17. Rab1 Rxf3 18. gxf3 Nxd4 19. Nxd4 Qxd4 20. Qxd4 Bxd4 21. Rxb4 e5 22. Rxb7 Bg4 23. Rxe5 Bxe5 24. fxg4 Bd4 1/2-1/2

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.30"]
[Round "9"]
[White "Ospina Castro, Santiago"]
[Black "Zapata Cuartas, Juan Carlos"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2041"]
[BlackElo "1985"]
[PlyCount "242"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. Be3 Be6 10. Qd3 Nbd7 11. a4 Rc8 12. a5 Bc4 13. Qd2 Bxb3 14. cxb3 Nc5 15. Bxc5 dxc5 16. Qc2 Qc7 17. Bc4 Rfd8 18. Nd5 Nxd5 19. Bxd5 Bf8 20. Rfd1 Bd6 21. Rd3 Rd7 22. g3 Qd8 23. Qd2 Qe7 24. Rd1 Rf8 25. Bc6 bxc6 26. Rxd6 Rxd6 27. Qxd6 Qb7 28. Qxe5 Qxb3 29. Rc1 c4 30. Qc3 Qb5 31. Qxc4 Qxa5 32. Qxc6 Qe5 33. b4 a5 34. b5 a4 35. b6 a3 36. Qc3 Qb5 37. Qxa3 Qxb6 38. Qe7 Qd4 39. Rc7 Qd1+ 40. Kg2 Qe2 41. Rd7 h5 42. h4 Qc2 43. Rc7 Qe2 44. Qe5 Qd3 45. Qd5 Qe2 46. Re7 g6 47. Rb7 Qg4 48. Ra7 Qe2 49. Rc7 Qb2 50. e5 Qe2 51. Rc6 Kg7 52. Rf6 Qe1 53. Qd4 Kg8 54. e6 Qb1 55. Qd5 Qb4 56. exf7+ Kh7 57. Qc6 Qb1 58. Rf4 Qb3 59. Qf6 Qb7+ 60. Kh2 Qc7 61. Qe6 Kg7 62. Rf6 Qc2 63. Qe5 Kh7 64. Kg1 Qb1+ 65. Kg2 Qb7+ 66. Kh2 Rxf7 67. Rxf7+ Qxf7 68. Qd4 Qa2 69. Kg2 Qa8+ 70. Kf1 Qf3 71. Ke1 Qf5 72. Kd2 Qa5+ 73. Ke3 Qc7 74. Ke4 Qe7+ 75. Kd5 Qd7+ 76. Kc4 Qa4+ 77. Kd5 Qd7+ 78. Ke4 Qg4+ 79. Kd3 Qd1+ 80. Ke3 Qb3+ 81. Ke2 Qb5+ 82. Kf3 Qc6+ 83. Qe4 Qf6+ 84. Kg2 Qd6 85. Qa8 Qc7 86. Qd5 Qe7 87. Qc6 Qa7 88. Qd6 Qb7+ 89. Kh2 Qa7 90. Qf8 Qd7 91. Qc5 Qb7 92. Kg1 Qd7 93. Kg2 Qb7+ 94. Kf1 Qh1+ 95. Ke2 Qe4+ 96. Kd2 Qb7 97. Kc3 Qd7 98. Kb4 Kg7 99. Ka5 Kf6 100. Kb6 Qd8+ 101. Kb5 Qb8+ 102. Kc4 Kg7 103. Kd5 Kh7 104. Ke6 Qb3+ 105. Kf6 Qb2+ 106. Ke7 Qe2+ 107. Kd8 Qd1+ 108. Ke8 Qa4+ 109. Ke7 Qe4+ 110. Kd8 Qd3+ 111. Kc7 Qe2 112. Qa7 Qc4+ 113. Kd6+ Kh6 114. Qe3+ Kh7 115. Qe7+ Kh6 116. Qf8+ Kh7 117. Qf6 Qb4+ 118. Ke6 Qb3+ 119. Ke7 Qa3+ 120. Ke8 Qa8+ 121. Kf7 Qa2+ 1/2-1/2

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.30"]
[Round "8"]
[White "Ospina Castro, Santiago"]
[Black "Zapata Montoya, Andres Geronimo"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2041"]
[BlackElo "1972"]
[PlyCount "104"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. Be3 Be6 10. Qd3 Nbd7 11. a4 Rc8 12. a5 Qc7 13. Rfd1 Rfd8 14. Bf3 Qc6 15. Rac1 Nf8 16. Nd5 Bxd5 17. exd5 Qa4 18. Be2 Ng6 19. g3 Qd7 20. c4 e4 21. Qd4 Qf5 22. Nd2 Re8 23. b4 Bf8 24. f3 exf3 25. Bxf3 Ne5 26. Bg2 Nfg4 27. Bf4 Nd3 28. Rc3 Nxf4 29. gxf4 g6 30. Rf3 Qc2 31. Rdf1 Re2 32. f5 Ne5 33. R3f2 Rxf2 34. Qxf2 Bh6 35. Ne4 Qxf2+ 36. Kxf2 Nxc4 37. fxg6 hxg6 38. Kg3 f5 39. Nf6+ Kg7 40. Nd7 Rc7 41. Nb6 Ne3 42. Re1 Rc3 43. Bf3 g5 44. Kf2 g4 45. Be2 Nc2 46. Rb1 Be3+ 47. Kf1 Bd4 48. Nc4 f4 49. Nxd6 Ne3+ 50. Ke1 f3 51. Nxb7 Rc2 52. Bxa6 f2# 0-1

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.29"]
[Round "7"]
[White "Mora Munoz, Alejandro"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "B68"]
[WhiteElo "1959"]
[BlackElo "2041"]
[PlyCount "90"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 Be7 10. Nf3 b5 11. a3 b4 12. axb4 Nxb4 13. Bc4 Qa5 14. Kb1 Rc8 15. Bb3 Bc6 16. Rhe1 0-0 17. Nd4 Ba8 18. f5 e5 19. Bxf6 Bxf6 20. Nde2 Rfd8 21. g4 h6 22. Qe3 d5 23. exd5 Nxd5 24. Nxd5 Bxd5 25. Bxd5 Rxd5 26. Nc1 Rxd1 27. Rxd1 Bg5 28. Qe4 Bxc1 29. Rxc1 Rb8 30. Re1 Qc3 31. b3 Rd8 32. Rc1 a5 33. Qa4 Kh7 34. h3 Rd2 35. Qe4 Rd4 36. Qe1 Qc5 37. Rd1 Rb4 38. Rd3 a4 39. Qe3 Qb5 40. Kb2 Rf4 41. Rc3 Rb4 42. Qc5 Qb8 43. Qc7 Qe8 44. Qc6 Qb8 45. Qc7 Qe8 1/2-1/2

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.28"]
[Round "6"]
[White "Ospina Castro, Santiago"]
[Black "Castaneda, Juan Esteban"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "2041"]
[BlackElo "1911"]
[PlyCount "129"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. f4 Qc7 9. g4 h6 10. g5 hxg5 11. fxg5 Nfd7 12. h4 Nc6 13. Be3 Nb6 14. Qd2 Nc4 15. Bxc4 Bxc4 16. 0-0-0 a5 17. Qf2 a4 18. Bb6 Qc8 19. Nd2 Nb4 20. a3 Na2+ 21. Nxa2 Bxa2 22. Nb1 Be6 23. Nc3 Qc4 24. g6 Rh6 25. h5 fxg6 26. hxg6 Rxg6 27. Kb1 Rf6 28. Qd2 Ra6 29. Be3 Rc6 30. Rh8 Rf1 31. Qg2 Rxd1+ 32. Nxd1 d5 33. Qf2 Bf7 34. exd5 Qxd5 35. Nc3 Qc4 36. Rh4 Qe6 37. Rxa4 Rxc3 38. bxc3 Qa2+ 39. Kc1 Bxa3+ 40. Kd2 Bc1+ 41. Kxc1 Qxa4 42. Qg2 Qa3+ 43. Kd2 Qd6+ 44. Kc1 Qa3+ 45. Kd2 Qd6+ 46. Kc1 Qc6 47. Qxg7 Qxc3 48. Bg5 Qa1+ 49. Kd2 Qd4+ 50. Kc1 Qg1+ 51. Kb2 Qb6+ 52. Kc1 Qe6 53. Qh8+ Bg8 54. Qf6 Qxf6 55. Bxf6 e4 56. Kd2 Kf7 57. Bd4 Ke6 58. Ke3 Kf5 59. c3 Bc4 60. Bb6 Bd3 61. Bd4 Ke6 62. Bb6 Kd5 63. Bd4 Kc4 64. Bg7 Bb1 65. Bd4 1/2-1/2

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.28"]
[Round "5"]
[White "Wong Pages, Juan Diego"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "B63"]
[WhiteElo "2011"]
[BlackElo "2041"]
[PlyCount "79"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Nb3 Be7 8. Qd2 a6 9. a4 h6 10. Bh4 Nxe4 11. Nxe4 Bxh4 12. Nxd6+ Ke7 13. Rd1 Qb6 14. a5 Qb4 15. g3 Bf6 16. Qxb4 Nxb4 17. c3 Nd5 18. Nxc8+ Raxc8 19. Bg2 Rhd8 20. Ke2 b6 21. Rd3 Nxc3+ 22. Rxc3 Bxc3 23. bxc3 Rxc3 24. Rb1 bxa5 25. Nxa5 Rc2+ 26. Ke3 Kf6 27. Be4 Rc3+ 28. Ke2 Rd4 29. f3 Ra4 30. Nb3 Ra2+ 31. Nd2 a5 32. Rb7 Rc1 33. f4 g5 34. Bb1 Rxd2+ 35. Kxd2 Rh1 36. fxg5+ hxg5 37. Be4 Rxh2+ 38. Ke3 Kg7 39. Rb5 f5 40. Bxf5 1/2-1/2

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.27"]
[Round "3"]
[White "Moncada Correa, Sara"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "2018"]
[BlackElo "2041"]
[PlyCount "48"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bf4 0-0 6. e3 Nbd7 7. c5 c6 8. Bd3 b6 9. b4 a5 10. a3 Ba6 11. Bxa6 Rxa6 12. b5 cxb5 13. c6 b4 14. Nb5 bxa3 15. 0-0 Ne4 16. cxd7 Qxd7 17. Qd3 Raa8 18. Bc7 f6 19. Rfc1 Rfc8 20. Rc2 Bb4 21. Rac1 a2 22. Rxa2 Nd6 23. Rca1 Nc4 24. Bxb6 Qxb5 0-1

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.27"]
[Round "4"]
[White "Ospina Castro, Santiago"]
[Black "Leon Acevedo, Juan Alejandro"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2041"]
[BlackElo "1829"]
[PlyCount "40"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 Rb8 13. b3 a5 14. Qf3 Bg5 15. Bd3 0-0 16. 0-0 Ne7 17. Nce3 Nc6 18. Nc2 Ne7 19. Nce3 Nc6 20. Nc2 Ne7 1/2-1/2

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.26"]
[Round "2"]
[White "Ospina Castro, Santiago"]
[Black "Gonzalez Velasco, Leandro"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2041"]
[BlackElo "1915"]
[PlyCount "92"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 0-0 5. Bg2 d5 6. c4 c5 7. cxd5 Qxd5 8. Nc3 Qd8 9. Rc1 Nfd7 10. Qc2 Nc6 11. Na4 Nd4 12. Nxd4 cxd4 13. 0-0 Rb8 14. d3 b5 15. Nc5 Nb6 16. Qd2 Nd5 17. Bxd5 Qxd5 18. e4 dxe3 19. fxe3 Bh6 20. Qf2 Bh3 21. Rfe1 f5 22. d4 f4 23. gxf4 Bxf4 24. Rc2 Qg5+ 25. Kh1 Bxe3 26. Qg3 Qd5+ 27. Rg2 Bxg2+ 28. Qxg2 Rf3 29. Nd7 Rd8 30. Ne5 Rf2 31. Qxd5+ Rxd5 32. Nc6 Bg5 33. Ba3 Rxa2 34. Bxe7 Rb2 35. h4 Bd2 36. Ra1 Rc2 37. Bc5 Rh5 38. Rxa7 Rxh4+ 39. Kg2 Bg5+ 40. Kf3 Rc3+ 41. Kg2 Rg4+ 42. Kf2 Bh4+ 43. Kf1 Rf4+ 44. Ke2 Rf2+ 45. Kd1 Rd3+ 46. Ke1 Rh2+ 0-1

[Event "Sabaneta op-A 1st"]
[Site "Sabaneta"]
[Date "2022.11.25"]
[Round "1"]
[White "Larino Nieto, David"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2466"]
[BlackElo "2041"]
[PlyCount "101"]
[EventDate "2022.11.25"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 211 Extra"]
[Source "ChessBase"]
[SourceDate "2023.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.01.31"]
[SourceQuality "1"]

1. d4 d5 2. c3 Nf6 3. Bg5 Nbd7 4. Nd2 e5 5. dxe5 Nxe5 6. e4 Be7 7. f4 Ng6 8. Bxf6 Bxf6 9. e5 Be7 10. Qf3 0-0 11. Bd3 f6 12. exf6 Rxf6 13. Ne2 Bf5 14. Bxf5 Rxf5 15. 0-0-0 c6 16. h4 Qc7 17. Qh3 Rff8 18. g3 Bc5 19. Nf3 Rae8 20. Ned4 Qc8 21. Qxc8 Rxc8 22. h5 Ne7 23. h6 g6 24. Rde1 Nf5 25. Nxf5 Rxf5 26. Ng5 Rf6 27. Re2 Bf8 28. Kd2 c5 29. Kd3 Rd8 30. Re5 b6 31. a4 Rfd6 32. b3 Rc6 33. Ne6 Re8 34. Nxf8 Rxe5 35. fxe5 Kxf8 36. c4 Re6 37. cxd5 Rxe5 38. Kc4 a6 39. Rh4 Re1 40. d6 Rd1 41. Rf4+ Ke8 42. Re4+ Kd7 43. Re7+ Kxd6 44. Rxh7 Rd4+ 45. Kc3 Rg4 46. Rh8 Rxg3+ 47. Kc2 Rg2+ 48. Kd3 Rg3+ 49. Ke4 Rxb3 50. h7 Rb4+ 51. Kd3 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.23"]
[Round "9"]
[White "Ospina Castro, Santiago"]
[Black "Velez Alvarez, Laura Camila"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "2054"]
[BlackElo "1798"]
[PlyCount "53"]
[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 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. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 e5 13. Bc5 Be6 14. Ne4 Re8 15. h4 Rb8 16. Bc4 Qd7 17. h5 Qb7 18. Bb3 Qa6 19. hxg6 Rxb3 20. gxf7+ Bxf7 21. cxb3 Qxa2 22. Qc2 Bg6 23. Qc4 Rb8 24. Kc2 Bf7 25. Ra1 Nb4+ 26. Qxb4 Bxb3+ 27. Kc3 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.23"]
[Round "10"]
[White "Valdes Martinez, Miguel A"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2113"]
[BlackElo "2054"]
[PlyCount "130"]
[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 e6 2. d3 d5 3. Nd2 Nf6 4. g3 Nc6 5. Bg2 dxe4 6. dxe4 e5 7. Ngf3 Bc5 8. 0-0 0-0 9. Qe2 Qe7 10. h3 Rd8 11. Re1 a5 12. Nb3 Bd6 13. c3 a4 14. Nbd2 b6 15. Nf1 Ba6 16. Qc2 Bc5 17. Bg5 Bd3 18. Qc1 h6 19. Bxf6 Qxf6 20. b4 axb3 21. axb3 Bxf1 22. Rxf1 b5 23. b4 Bb6 24. Qc2 Ne7 25. Qe2 Qc6 26. Rxa8 Rxa8 27. Nxe5 Qxc3 28. Nd7 Qxb4 29. e5 Rd8 30. e6 Qc4 31. exf7+ Qxf7 32. Rd1 Kh8 33. Nxb6 Rxd1+ 34. Qxd1 cxb6 35. Qd8+ Kh7 36. Qxb6 Qc4 37. Bf1 Qc6 38. Qb8 Qf6 39. Qxb5 g6 40. Qe8 Kg7 41. Bc4 Qa1+ 42. Kg2 Qf6 43. Bb3 Qc6+ 44. Qxc6 Nxc6 45. Bd5 Ne7 46. Be4 Kf6 47. h4 Nc8 48. g4 g5 49. Kg3 Nd6 50. Bd3 Nf7 51. f4 gxf4+ 52. Kxf4 Nd6 53. Ba6 Nf7 54. Ke4 Ne5 55. Be2 Nxg4 56. Bxg4 h5 57. Bf5 Kg7 58. Ke5 Kh6 59. Be4 Kg7 60. Kf5 Kh8 61. Kg6 Kg8 62. Kxh5 Kg7 63. Kg5 Kh8 64. Kh6 Kg8 65. h5 Kh8 1/2-1/2

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.22"]
[Round "8"]
[White "Malka, Samuel"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2256"]
[BlackElo "2054"]
[PlyCount "75"]
[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 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 c5 8. b3 Ra7 9. Nc3 b6 10. 0-0 Bb7 11. Bb2 Be7 12. e4 Qa8 13. d3 0-0 14. Nd2 Rd8 15. Nc4 Qb8 16. f4 b5 17. Ne3 Nf8 18. e5 Ne8 19. Ne4 g6 20. Ng4 Nd7 21. Qd2 Bf8 22. f5 exf5 23. Nh6+ Bxh6 24. Qxh6 Bxe4 25. dxe4 Nxe5 26. exf5 f6 27. Rae1 Nf7 28. Qc1 g5 29. Re6 Rd6 30. Qxc5 Rad7 31. Rfe1 Ng7 32. Rxf6 Rd1 33. Bc3 Qe8 34. Kf2 Rxe1 35. Bxe1 Ne5 36. Bd5+ Rxd5 37. Qxd5+ Kh8 38. Qxe5 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.22"]
[Round "7"]
[White "Ospina Castro, Santiago"]
[Black "Cuervo Velasquez, Juan Manuel"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2054"]
[BlackElo "1803"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. Be3 Be6 10. Qd3 Nc6 11. a3 Qb8 12. Nd5 Bd8 13. Rfd1 Bxd5 14. exd5 Ne7 15. c4 b5 16. cxb5 axb5 17. Bg5 Nfxd5 18. Bf3 Ra6 19. Be4 h6 20. Bxh6 gxh6 21. Bxd5 Nxd5 22. Qxd5 Bg5 23. g3 Rc8 24. h4 Be7 25. Rd3 Rac6 26. Rf3 Bf8 27. Rxf7 Kh8 28. Rxf8+ Rxf8 29. Qxc6 Qa7 30. Rf1 Qf7 31. Qxb5 e4 32. Nd4 Qf6 33. Nc6 Rg8 34. Qd5 Qg6 35. Ne7 Qxg3+ 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.21"]
[Round "6"]
[White "Gallon Ramirez, Tomas"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "1438"]
[BlackElo "2054"]
[PlyCount "130"]
[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 e6 3. g3 Bb4+ 4. Bd2 Be7 5. Nf3 d5 6. Bg2 0-0 7. 0-0 Nbd7 8. Qc2 c6 9. Bf4 b6 10. Nbd2 Nh5 11. Ne5 Bb7 12. Rfd1 Nxf4 13. gxf4 Nf6 14. c5 Nh5 15. e3 f6 16. Nd3 g6 17. Bh3 Ng7 18. Nf3 a5 19. Kh1 b5 20. Rg1 Kf7 21. Nde5+ Ke8 22. Rxg6 Nf5 23. Bxf5 exf5 24. Rh6 fxe5 25. Nxe5 Qc8 26. Qe2 Kd8 27. Qh5 Kc7 28. Rxh7 Qe6 29. Rg1 Rg8 30. Rgg7 Rxg7 31. Rxg7 Rg8 32. Rxg8 Qxg8 33. Qxf5 Bc8 34. Qg6 Qxg6 35. Nxg6 Bf6 36. Kg2 Bf5 37. Ne5 b4 38. Kg3 a4 39. a3 bxa3 40. bxa3 Kb7 41. h4 Bd8 42. h5 Ba5 43. h6 Bb4 44. Kh4 Bxa3 45. Kg5 Bh7 46. Kf6 Bxc5 47. Kg7 a3 48. Kxh7 Bf8 49. Kg6 Bxh6 50. Kxh6 a2 51. f5 a1Q 52. f6 Qh1+ 53. Kg7 Qg2+ 54. Ng6 Qxf2 55. f7 Qxe3 56. f8Q Qxd4+ 57. Kg8 Qg4 58. Qe7+ Ka6 59. Qd6 Kb5 60. Kf7 Qb4 61. Qd7 d4 62. Qb7+ Kc5 63. Qe7+ Kb5 64. Qb7+ Kc5 65. Qe7+ Kc4 1/2-1/2

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.21"]
[Round "5"]
[White "Ospina Castro, Santiago"]
[Black "Ortiz Lopera, Miguel Angel"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "2054"]
[BlackElo "1827"]
[PlyCount "120"]
[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 d5 2. b3 f6 3. d4 Bg4 4. Bb2 e6 5. c4 c6 6. e3 Bd6 7. Be2 Nd7 8. 0-0 Qb8 9. h3 h5 10. Nc3 g5 11. e4 Bxf3 12. Bxf3 g4 13. exd5 gxf3 14. dxe6 Bh2+ 15. Kh1 fxg2+ 16. Kxg2 Nf8 17. d5 Ne7 18. Ne4 Be5 19. Nxf6+ Bxf6 20. Bxf6 Rg8+ 21. Kh1 Qf4 22. Qxh5+ Rg6 23. Be5 Qg5 24. Qxg5 Rxg5 25. f4 Rh5 26. Rad1 Nf5 27. Rd3 cxd5 28. cxd5 Rh6 29. Rc1 Rd8 30. Rcc3 Rg6 31. Kh2 Nh4 32. Kh1 Nf5 33. b4 a6 34. a4 b5 35. a5 Rh6 36. Bc7 Rc8 37. Rc6 Rh7 38. d6 Nxd6 39. Rdxd6 Rhxc7 40. Rxc7 Rxc7 41. Rxa6 Rc4 42. f5 Rf4 43. Ra8+ Ke7 44. Ra7+ Ke8 45. Rb7 Rf1+ 46. Kg2 Ra1 47. f6 Ra2+ 48. Kg3 Ra3+ 49. Kg4 Nxe6 50. Re7+ Kf8 51. Rxe6 Rb3 52. Re4 Kf7 53. Rf4 Rb1 54. Kf5 Rh1 55. h4 Rc1 56. Ke5 Rc8 57. Kd5 Rc1 58. a6 Rc7 59. a7 Rxa7 60. Kc6 Ke8 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.20"]
[Round "4"]
[White "Castaneda, Juan Esteban"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1814"]
[BlackElo "2054"]
[PlyCount "77"]
[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 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. cxd5 exd5 6. e3 c6 7. Bd3 0-0 8. Nge2 Nbd7 9. 0-0 Re8 10. f3 Nf8 11. Bh4 Ng6 12. Bf2 b6 13. h3 c5 14. Bb5 Bd7 15. Qa4 Bxb5 16. Qxb5 a6 17. Qd3 b5 18. a3 Qd7 19. g4 Rac8 20. Kh1 cxd4 21. exd4 Bd6 22. Rg1 Re7 23. Qf5 Rce8 24. Qxd7 Nxd7 25. Ng3 Bxg3 26. Bxg3 Nb6 27. h4 Rd7 28. Rae1 Kf8 29. h5 Ne7 30. h6 gxh6 31. Re5 Nc6 32. Rh5 Re6 33. Bf2 Ne7 34. f4 Nc4 35. f5 Rc6 36. Bh4 Nxb2 37. Bxe7+ Kxe7 38. f6+ Kxf6 39. Rxh6+ 1-0

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.20"]
[Round "3"]
[White "Ospina Castro, Santiago"]
[Black "Herrera, Juan Sebastian"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "2054"]
[BlackElo "2281"]
[PlyCount "80"]
[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 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 b5 7. 0-0 Bb7 8. Re1 Nc6 9. Nxc6 dxc6 10. e5 Rd8 11. Bd3 c5 12. Qe2 Ne7 13. a4 b4 14. Ne4 Qc6 15. Bf4 Ng6 16. Bg3 Be7 17. f3 0-0 18. Nd6 Bxd6 19. exd6 Rfe8 20. Be4 Qc8 21. Qc4 Bxe4 22. fxe4 e5 23. Rad1 Re6 24. Rf1 Qc6 25. Rd5 Rdxd6 26. Rxc5 Qxa4 27. Rc8+ Nf8 28. Bxe5 Rc6 29. Rxc6 Qxc6 30. Qxc6 Rxc6 31. Rd1 f6 32. Rd6 Rxc2 33. Bd4 a5 34. Ra6 Rd2 35. Bc5 Nd7 36. Rxa5 Rxb2 37. Rb5 Nxc5 38. Rxc5 Re2 39. Rc4 b3 40. Rb4 b2 0-1

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.19"]
[Round "2"]
[White "Ordaz Valdes, Lisandra Teresa"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "D53"]
[WhiteElo "2326"]
[BlackElo "2054"]
[PlyCount "45"]
[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 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bg5 h6 6. Bh4 0-0 7. Qc2 Ne4 8. Bxe7 Qxe7 9. Rd1 Nxc3 10. Qxc3 c6 11. e3 dxc4 12. Bxc4 b6 13. 0-0 Bb7 14. Ne5 Nd7 15. Nxd7 Qxd7 16. Be2 Qe7 17. Bf3 Rfc8 18. b4 Rc7 19. Rb1 Rac8 20. Qb2 Ba8 21. Rfc1 c5 22. Bxa8 Rxa8 23. dxc5 1/2-1/2

[Event "Medellin Raza Cup"]
[Site "Medellin"]
[Date "2022.10.19"]
[Round "1"]
[White "Ospina Castro, Santiago"]
[Black "Sanchez Ospina, William"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2054"]
[BlackElo "1461"]
[PlyCount "91"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 Nc6 7. d5 Ne5 8. Nxe5 dxe5 9. Bc4 Bg4 10. f3 Bd7 11. Be3 a6 12. a4 Qc8 13. Qe2 e6 14. dxe6 Bxe6 15. Rfd1 Re8 16. a5 Bf8 17. Na4 Bxc4 18. Qxc4 Re6 19. Qb3 Rb8 20. Ba7 Ra8 21. Be3 Nd7 22. Rd5 Rb8 23. Rad1 Bd6 24. c4 Nf6 25. R5d3 Qe8 26. c5 Be7 27. Nc3 c6 28. Na4 Qf8 29. Qc3 h6 30. b4 g5 31. Nb6 Qg7 32. g4 h5 33. h3 hxg4 34. hxg4 Re8 35. Nc4 Nh7 36. Nd6 Bxd6 37. cxd6 Rd8 38. d7 Qh6 39. Kg2 Nf8 40. Qd2 Rg6 41. Rh1 Qg7 42. Bb6 Ne6 43. Bxd8 Nf4+ 44. Qxf4 gxf4 45. Bg5 Rxg5 46. d8Q+ 1-0

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.07"]
[Round "8"]
[White "Garces Trujillo, Luis Javier"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "1852"]
[BlackElo "2079"]
[PlyCount "87"]
[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. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. cxd5 exd5 6. Bf4 c6 7. e3 Bf5 8. Bd3 Bxd3 9. Qxd3 0-0 10. 0-0 Nbd7 11. Rab1 a5 12. Rfc1 a4 13. b4 axb3 14. axb3 Ba3 15. Rc2 Bb4 16. Na2 Qe7 17. Nxb4 Qxb4 18. Qd2 Qb5 19. Qe2 Qxe2 20. Rxe2 Ne4 21. Rc2 Ra3 22. h3 Rfa8 23. b4 Nb6 24. b5 Nc3 25. bxc6 Nxb1 26. cxb7 Nc4 27. bxa8Q+ Rxa8 28. Ne5 Ra1 29. Kh2 Nbd2 30. g4 f6 31. Nxc4 Nxc4 32. e4 Rd1 33. exd5 Rxd4 34. Bg3 Kf7 35. Bb8 Kg6 36. Ba7 Na3 37. Bxd4 Nxc2 38. Bc5 Ne1 39. Bb4 Nd3 40. Bc3 Kf7 41. Kg3 Ke7 42. Kf3 Kd6 43. Ke3 Nc5 44. Kd4 1/2-1/2

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.07"]
[Round "9"]
[White "Ospina Castro, Santiago"]
[Black "Rueda Rojas, Richard Alejandro"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2079"]
[BlackElo "1616"]
[PlyCount "45"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. h3 Nbd7 7. 0-0 e5 8. dxe5 dxe5 9. Be3 c6 10. a4 a5 11. Qd6 Ne8 12. Qd2 Qc7 13. Rfd1 Nef6 14. Bc4 Nh5 15. Ne2 Ndf6 16. Ng5 b5 17. Ba2 Bb7 18. Bc5 h6 19. Bxf8 hxg5 20. Bxg7 Kxg7 21. Qxg5 Nxe4 22. Qe3 Nef6 23. Nc3 1-0

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.06"]
[Round "7"]
[White "Ospina Castro, Santiago"]
[Black "Iral Castro, Brahiam"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2079"]
[BlackElo "1859"]
[PlyCount "51"]
[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 e6 2. b3 d5 3. Bb2 dxe4 4. Nc3 Nf6 5. Qe2 Bb4 6. 0-0-0 Qe7 7. Nxe4 Nbd7 8. Nf3 Ba3 9. d4 a5 10. Nxf6+ gxf6 11. c3 Nb6 12. Bxa3 Qxa3+ 13. Qb2 Qxb2+ 14. Kxb2 Bd7 15. g3 0-0-0 16. Bg2 Bc6 17. Rhe1 Rhg8 18. Nh4 Bxg2 19. Nxg2 Rg5 20. Re4 Rh5 21. h4 Rf5 22. Rf4 Rxf4 23. Nxf4 c5 24. Ne2 cxd4 25. Rxd4 Rxd4 26. Nxd4 1/2-1/2

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.04"]
[Round "2"]
[White "Aristizabal Soto, Diego Fernando"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "B58"]
[WhiteElo "1460"]
[BlackElo "2079"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 e5 7. Nxc6 bxc6 8. Bg5 h6 9. Bh4 Be7 10. f3 Be6 11. Qd2 0-0 12. Bf2 d5 13. exd5 cxd5 14. Bd3 d4 15. Ne2 Nd5 16. a3 Bg5 17. Qd1 Ne3 18. Bxe3 Bxe3 19. Ng3 Qh4 20. Ke2 f5 21. Qe1 e4 22. Ba6 Qd8 23. b4 Qb6 24. b5 exf3+ 25. gxf3 Bc4+ 26. Kd1 Bxb5 27. Bxb5 Qxb5 28. Qb4 Qe5 29. Re1 Kh8 30. Ke2 Rac8 31. Kf1 Qd5 32. Kg2 Rxc2+ 33. Kh3 Rfc8 34. Qe7 Qxf3 0-1

[Event "Medellin Feria de las Flores op"]
[Site "Medellin"]
[Date "2022.08.03"]
[Round "1"]
[White "Ospina Castro, Santiago"]
[Black "Lopez, Ricardo Andres"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2079"]
[BlackElo "1489"]
[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. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Be2 Bf5 5. d4 Nxd5 6. a3 e6 7. c4 Nf6 8. Nc3 Be7 9. h3 Nbd7 10. Bf3 c6 11. g4 Bg6 12. g5 Ng8 13. h4 h6 14. h5 Bf5 15. g6 fxg6 16. hxg6 Ngf6 17. Nge2 Bxg6 18. Nf4 Bf7 19. Qe2 Bd6 20. Nd3 Qe7 21. Ne5 0-0-0 22. Nxc6 bxc6 23. c5 Nxc5 24. dxc5 Bxc5 25. Bxc6 Qc7 26. Qa6+ Kb8 27. Bf4 e5 28. Nb5 Qe7 29. 0-0 exf4 30. Rfe1 Bxf2+ 31. Kxf2 Ng4+ 32. Kf3 Rd3+ 33. Kg2 Rg3+ 34. Kf1 Bc4+ 0-1

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2022.07.11"]
[Round "7"]
[White "Ospina Castro, Santiago"]
[Black "Sierra Mejia, Juan Pablo"]
[Result "1/2-1/2"]
[ECO "A06"]
[WhiteElo "2088"]
[BlackElo "2175"]
[PlyCount "120"]
[EventDate "2022.07.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 c5 3. e3 a6 4. Bb2 Nc6 5. d4 Bg4 6. Be2 cxd4 7. Nxd4 Bxe2 8. Qxe2 Rc8 9. 0-0 Nxd4 10. Bxd4 Qc7 11. Rc1 e5 12. Bb2 Bd6 13. Nd2 Ne7 14. c4 dxc4 15. Nxc4 Nc6 16. f4 0-0 17. Nxe5 Bxe5 18. Bxe5 Qe7 19. Bc3 Rfe8 20. Re1 b5 21. Rad1 f6 22. e4 Qa7+ 23. Qf2 Qb7 24. Qg3 Qf7 25. Kh1 Re6 26. e5 fxe5 27. fxe5 Rce8 28. Re2 Qh5 29. Rde1 Ne7 30. Re4 Rh6 31. h3 Nf5 32. Qg4 Qxg4 33. Rxg4 Rc6 34. Ba1 a5 35. Rf4 g6 36. Rf2 Rec8 37. g4 Ng7 38. Bd4 Ne6 39. Be3 Rf8 40. Kg2 Rxf2+ 41. Kxf2 Rc2+ 42. Re2 Rc3 43. Ke1 Rd3 44. Kf2 a4 45. bxa4 bxa4 46. Rb2 Ra3 47. Kf3 h5 48. gxh5 gxh5 49. h4 Kf7 50. Ke4 Ng7 51. Bg5 Ne6 52. Rf2+ Ke8 53. Kd5 Nxg5 54. hxg5 Rg3 55. Rf4 Rxg5 56. Rxa4 Rg6 57. Ra8+ Ke7 58. Ra7+ Ke8 59. Rh7 Ra6 60. Rxh5 Rxa2 1/2-1/2

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2022.07.11"]
[Round "6"]
[White "Soto, Miguel Angel"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "B53"]
[WhiteElo "2346"]
[BlackElo "2088"]
[PlyCount "71"]
[EventDate "2022.07.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3 Nf6 8. Bg5 e6 9. 0-0-0 Be7 10. Qd3 0-0 11. Nd4 d5 12. e5 Nd7 13. Bxe7 Qxe7 14. f4 f6 15. Qh3 fxe5 16. Nxe6 Rfc8 17. fxe5 Nxe5 18. Nxd5 Bxd5 19. Rxd5 Nc4 20. Rd4 Qb4 21. Qb3 Qxb3 22. axb3 Nb6 23. Rhd1 Rc6 24. Rd8+ Rxd8 25. Nxd8 Rc7 26. Re1 h6 27. Re8+ Kh7 28. Ne6 Rf7 29. Nf8+ Kh8 30. Nd7+ Kh7 31. Nxb6 axb6 32. Re2 Kg6 33. Kd2 Kg5 34. Re5+ Kg4 35. Ke2 h5 36. Re6 1-0

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.10"]
[Round "9"]
[White "Cordoba Perez, Jeronimo"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "1838"]
[BlackElo "2088"]
[PlyCount "114"]
[EventDate "2022.07.06"]
[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 e6 2. Nf3 d5 3. e3 Nf6 4. b3 Be7 5. Be2 c5 6. cxd5 Nxd5 7. 0-0 0-0 8. Bb2 b6 9. Na3 Bb7 10. Nc4 Nc6 11. d4 cxd4 12. Nxd4 Nxd4 13. Bxd4 Bf6 14. Bf3 Qe7 15. Ne5 Rfd8 16. Qe2 Nf4 17. exf4 Rxd4 18. Bxb7 Qxb7 19. g3 Rad8 20. Rad1 Bxe5 21. fxe5 g6 22. Rxd4 Rxd4 23. Re1 Qd5 24. Qa6 Qd7 25. Rc1 Kg7 26. h4 Re4 27. Qc8 Re1+ 28. Kh2 Qxc8 29. Rxc8 Rxe5 30. Kg2 Re2 31. a4 Rb2 32. Rc7 a5 33. Rc3 Kf6 34. Kf3 Ke5 35. Rd3 h5 36. Ke3 Rc2 37. f4+ Kf5 38. Kf3 Rc5 39. Re3 Kf6 40. Kg2 Ke7 41. Kf3 Kd6 42. Ke4 Rc1 43. Rd3+ Kc5 44. Ke5 Kb4 45. Kf6 Rc3 46. Rd4+ Kxb3 47. Kxf7 Rxg3 48. Kxe6 Rg4 49. Kf6 Kc3 50. Re4 Kd3 51. Re6 Rxf4+ 52. Kxg6 Rxh4 53. Rxb6 Rxa4 54. Kxh5 Rd4 55. Kg5 a4 56. Kf5 Rd5+ 57. Ke6 Ra5 0-1

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2022.07.10"]
[Round "4"]
[White "Ospina Castro, Santiago"]
[Black "Castaneda, Juan Esteban"]
[Result "1-0"]
[ECO "B45"]
[WhiteElo "2088"]
[BlackElo "1782"]
[PlyCount "63"]
[EventDate "2022.07.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 Nxd5 10. Bd2 0-0 11. Qh5 Nxc3 12. Bxc3 Qd5 13. Qh4 Ne5 14. Rd1 Ng6 15. Qa4 Qg5 16. h4 Qc5 17. h5 Ne7 18. h6 gxh6 19. Bd3 Qg5 20. Rh3 Ng6 21. Rg3 Qh5 22. Bf6 e5 23. Be7 Be6 24. Bxf8 Rxf8 25. Kd2 Rd8 26. Kc1 a6 27. Re1 Rd4 28. Qe8+ Kg7 29. Qb8 Rf4 30. Qa7 Qh4 31. Rxg6+ hxg6 32. g3 1-0

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.10"]
[Round "8"]
[White "Ospina Castro, Santiago"]
[Black "Hernandez, Jeronimo"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2088"]
[BlackElo "2141"]
[PlyCount "77"]
[EventDate "2022.07.06"]
[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 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. 0-0 d6 6. c3 0-0 7. h3 h6 8. Re1 a6 9. Bb3 Bb6 10. Nbd2 Na5 11. Bc2 c5 12. Nf1 Nc6 13. Ng3 d5 14. exd5 Qxd5 15. Bb3 Qd6 16. Ne4 Nxe4 17. dxe4 Qg6 18. Kh1 c4 19. Bxc4 Bxf2 20. Rf1 Bg3 21. Qe2 Kh8 22. Bd2 f5 23. Be1 f4 24. Bxg3 Qxg3 25. Bd5 Re8 26. Bxc6 bxc6 27. Qf2 Qg6 28. Qc5 Rb8 29. Nxe5 Qh5 30. Nd3 Qxc5 31. Nxc5 Rxb2 32. Rxf4 Rb5 33. Nb3 Rbe5 34. Re1 Bf5 35. Nd2 g5 36. Rf2 Bxe4 37. Nxe4 Rxe4 38. Rxe4 Rxe4 39. Rf6 1/2-1/2

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2022.07.10"]
[Round "5"]
[White "Ospina Castro, Santiago"]
[Black "Panesso Rivera, Henry"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "2088"]
[BlackElo "2364"]
[PlyCount "74"]
[EventDate "2022.07.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 e6 7. h4 h6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Nf6 11. Bd2 c5 12. Ne4 Nc6 13. 0-0-0 cxd4 14. Bf4 Nxe4 15. Qxe4 Bc5 16. Be3 Qa5 17. Nxd4 Nxd4 18. Bxd4 Bxd4 19. Qxd4 0-0 20. Kb1 Rfd8 21. Qg4 Rd2 22. Rxd2 Qxd2 23. Qf3 Rd8 24. a4 Rd5 25. b3 a6 26. Rh3 Rf5 27. Qxb7 Rxf2 28. Qc8+ Kh7 29. Qc3 Rf1+ 30. Ka2 Qc1 31. Rg3 e5 32. Rf3 Rxf3 33. gxf3 Qf4 34. Qd3+ Kg8 35. Qd8+ Kh7 36. Qd3+ Kg8 37. Qd8+ Kh7 1/2-1/2

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.09"]
[Round "6"]
[White "Borre Meza, Orlando David"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1498"]
[BlackElo "2088"]
[PlyCount "104"]
[EventDate "2022.07.06"]
[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 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 0-0 6. e3 Nbd7 7. Qc2 c5 8. Bd3 dxc4 9. Bxc4 cxd4 10. exd4 Nb6 11. Bd3 Nbd5 12. Bg3 Nb4 13. Qb1 Nxd3+ 14. Qxd3 b6 15. 0-0 Bb7 16. Rac1 Bxf3 17. Qxf3 Qxd4 18. a3 Qc4 19. Rfd1 Qa6 20. Bd6 Bxd6 21. Rxd6 Rad8 22. Rcd1 Qc8 23. h3 Rxd6 24. Rxd6 Rd8 25. Qb7 g6 26. Rxd8+ Qxd8 27. Qxa7 Qd4 28. Qb8+ Kg7 29. Qb7 h5 30. Qa6 Nd7 31. Qe2 Ne5 32. Qd1 Nd3 33. Qd2 e5 34. Kf1 e4 35. Qe3 Qxe3 36. fxe3 Nxb2 37. Nxe4 Nc4 38. a4 Nxe3+ 39. Kf2 Nd5 40. g4 hxg4 41. hxg4 Nf6 42. Kf3 Nxe4 43. Kxe4 Kh6 44. Kf4 f6 45. Ke4 Kg5 46. Kd5 f5 47. gxf5 gxf5 48. Kc6 f4 49. Kxb6 f3 50. a5 f2 51. a6 f1Q 52. Ka7 Qb5 0-1

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.09"]
[Round "7"]
[White "Diaz Larrea, Juan Manuel"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "C08"]
[WhiteElo "1748"]
[BlackElo "2088"]
[PlyCount "130"]
[EventDate "2022.07.06"]
[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 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nf6 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. 0-0 Be7 9. Re1 0-0 10. Nf1 Re8 11. dxc5 Nxc5 12. c3 Nce4 13. Be3 Qc7 14. h3 b5 15. Rc1 a5 16. a4 Qb7 17. axb5 Qxb5 18. Qe2 Qb7 19. Nd4 Rec8 20. Nf5 Bf8 21. Bd4 Qd7 22. N5e3 Bc5 23. Red1 Qe6 24. f3 Nd6 25. Qd3 Nc4 26. Rc2 Rab8 27. Nxc4 Bxd4+ 28. Nce3 Bc5 29. Kh1 Rd8 30. Re2 Qb6 31. Nf5 g6 32. Nd4 Kg7 33. Qd2 h6 34. Ng3 Kh7 35. Qf4 Re8 36. Rdd2 Qd6 37. Qxd6 Bxd6 38. Rxe8 Rxe8 39. Nge2 Ra8 40. Nb5 Bc5 41. b3 Rc8 42. Rd3 g5 43. Ned4 Kg6 44. Kg1 Nh5 45. Kf1 Nf4 46. Rd2 Kf6 47. Ne2 Be3 48. Ra2 Nxe2 49. Kxe2 Bb6 50. Kd3 Ke6 51. Nd4+ Kf6 52. Nb5 h5 53. Ra4 Re8 54. Nd4 Re1 55. b4 axb4 56. Ra6 bxc3 57. Rxb6+ Ke5 58. Kxc3 Re3+ 59. Kd2 Kxd4 60. Rf6 Ra3 61. Ke2 Ra2+ 62. Kf1 Ke3 63. Kg1 Ra1+ 64. Kh2 d4 65. Rxf7 d3 0-1

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2022.07.09"]
[Round "2"]
[White "Ospina Castro, Santiago"]
[Black "Montoya Echeverri, Sebastian"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "2088"]
[BlackElo "1761"]
[PlyCount "59"]
[EventDate "2022.07.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. d4 d6 4. Nc3 Nc6 5. d5 Nb8 6. e4 Nf6 7. Be2 0-0 8. 0-0 e6 9. Bg5 h6 10. Bh4 exd5 11. cxd5 Re8 12. Nd2 c6 13. Bg3 cxd5 14. exd5 Nbd7 15. Bb5 a6 16. Bxd7 Bxd7 17. Nc4 Bf8 18. Bxd6 Bg4 19. f3 Bxd6 20. Nxd6 Qxd6 21. fxg4 Rad8 22. Qd4 Nd7 23. Kh1 Qc5 24. Qf4 Qf8 25. Ne4 Re7 26. Rad1 Qg7 27. Qc7 Rb8 28. Nf6+ Nxf6 29. Qxb8+ Kh7 30. Qf4 1-0

[Event "Medellin Aristizabal Cup"]
[Site "Medellin"]
[Date "2022.07.08"]
[Round "1"]
[White "Ortiz Monsalve, Sebastian"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "1563"]
[BlackElo "2088"]
[PlyCount "66"]
[EventDate "2022.07.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 a6 7. Na3 b5 8. Nd5 Nxe4 9. Qf3 Nc5 10. c4 Bb7 11. cxb5 Nb4 12. Bc4 e6 13. bxa6 Bxd5 14. Bb5+ Nd7 15. Qg4 Nxa6 16. 0-0 Nc7 17. Re1 Nxb5 18. Nxb5 Qa5 19. Nc3 Nf6 20. Qh4 Be7 21. Bd2 0-0 22. b4 Qb6 23. a4 Qb7 24. Qg3 Ne4 25. Nxe4 Bxe4 26. Bh6 Bg6 27. Bd2 Bf6 28. Ra3 Qd5 29. Bf4 Bb2 30. Rb3 e5 31. Rxb2 exf4 32. Qxf4 Rxa4 33. Rd2 Qe5 0-1

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.08"]
[Round "4"]
[White "Ospina Castro, Santiago"]
[Black "Brito Carrascal, Camilo Andres"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2088"]
[BlackElo "1678"]
[PlyCount "105"]
[EventDate "2022.07.06"]
[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 b5 7. 0-0 Bb7 8. Re1 Nc6 9. Bf3 Ne5 10. Bf4 d6 11. Bg3 b4 12. Na4 Nf6 13. b3 Be7 14. Qd2 a5 15. Rac1 Ba6 16. c4 Rd8 17. Bd1 Bb7 18. Bc2 Nh5 19. f4 Nxg3 20. hxg3 Nd7 21. Nb5 Qb8 22. Qf2 Nc5 23. Nxc5 dxc5 24. Rcd1 0-0 25. e5 Rxd1 26. Rxd1 Rd8 27. Kh2 Rxd1 28. Bxd1 Bc6 29. Qf1 f6 30. Bg4 Kf7 31. Qd3 fxe5 32. Qxh7 Bf6 33. Bh5+ Ke7 34. Qg6 Be8 35. Qxe8+ Qxe8 36. Bxe8 Kxe8 37. Nd6+ Kd7 38. Ne4 exf4 39. Nxc5+ Kd6 40. Nd3 fxg3+ 41. Kxg3 Bc3 42. Kf3 Bd4 43. Ke4 Bf6 44. Nc1 Bb2 45. Ne2 Bf6 46. Nd4 g6 47. Ne2 g5 48. Nd4 Bh8 49. c5+ Kd7 50. c6+ Kd6 51. c7 Kxc7 52. Nxe6+ Kd6 53. Nxg5 1-0

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.08"]
[Round "5"]
[White "Ospina Castro, Santiago"]
[Black "Caballero Marrugo, David Jose"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "2088"]
[BlackElo "1759"]
[PlyCount "66"]
[EventDate "2022.07.06"]
[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 Nf6 2. b3 b6 3. g3 Bb7 4. Bb2 g5 5. Bxf6 exf6 6. Bg2 h5 7. c4 h4 8. Nxh4 Qc8 9. Nf3 g4 10. Nh4 Rxh4 11. gxh4 Bxg2 12. Rg1 Qb7 13. Nc3 Bd6 14. f3 Bh3 15. Qc2 Na6 16. Nd5 0-0-0 17. fxg4 Bxh2 18. 0-0-0 Bxg1 19. Rxg1 c6 20. Nf4 Qc7 21. Nxh3 Qh2 22. Qd3 Re8 23. Re1 Nb4 24. Qf3 Nxa2+ 25. Kb1 Qd6 26. Kc2 Qa3 27. Ra1 Rxe2 28. Qxf6 Qa5 29. Qh8+ Kc7 30. Qd4 d6 31. Nf4 Rh2 32. h5 Nb4+ 33. Kb2 Qxa1+ 0-1

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.07"]
[Round "3"]
[White "Carvajal Barreto, Misael Camilo"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1685"]
[BlackElo "2088"]
[PlyCount "82"]
[EventDate "2022.07.06"]
[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 d5 2. c4 e6 3. a3 Nf6 4. Nf3 Be7 5. e3 0-0 6. Nc3 b6 7. cxd5 exd5 8. h3 c5 9. Be2 Be6 10. b3 Nbd7 11. Bb2 Ne4 12. dxc5 Nxc3 13. Bxc3 bxc5 14. 0-0 Bf6 15. Qc2 Qb6 16. Bxf6 Nxf6 17. Rab1 a5 18. a4 Rfd8 19. Rfc1 Rac8 20. Bd3 d4 21. e4 h6 22. Nd2 Nh5 23. Nc4 Bxc4 24. bxc4 Qc7 25. Rb5 Ra8 26. Rcb1 Nf4 27. R1b3 Qe5 28. Bf1 d3 29. Bxd3 Qg5 30. Bf1 Rd2 31. Qb1 Rad8 32. Rg3 Qe5 33. Re3 Kh7 34. Rbb3 g6 35. Re1 Ne6 36. Rd3 R8xd3 37. Bxd3 Qd4 38. Re3 Nf4 39. Bc2 Qxc4 40. Bd1 Qd4 41. Bf3 Qxa4 0-1

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.07"]
[Round "2"]
[White "Merino Vanegas, Santiago Andres"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "B67"]
[WhiteElo "1136"]
[BlackElo "2088"]
[PlyCount "48"]
[EventDate "2022.07.06"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f3 Be7 10. h4 h6 11. Bxf6 Bxf6 12. Nxc6 Bxc6 13. Qxd6 Qa5 14. Bc4 Rd8 15. Qg3 Bxc3 16. bxc3 Qxc3 17. Rxd8+ Kxd8 18. Rd1+ Kc8 19. Bd3 Rd8 20. Kb1 Ba4 21. Qf2 Rd4 22. a3 Bb5 23. Ka2 Ra4 24. Kb1 Rxa3 0-1

[Event "COL-ch U20"]
[Site "Barranquilla"]
[Date "2022.07.06"]
[Round "1"]
[White "Ospina Castro, Santiago"]
[Black "Rivera Fernandez, Fredy Alejandro"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "2088"]
[BlackElo "1391"]
[PlyCount "82"]
[EventDate "2022.07.06"]
[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nf6 7. 0-0 Bc5 8. Be3 d6 9. Qd3 0-0 10. f4 Nbd7 11. Bf3 e5 12. fxe5 Nxe5 13. Qe2 b5 14. Nb3 Bxe3+ 15. Qxe3 Nc4 16. Qg5 Bb7 17. e5 h6 18. Qg3 Nh7 19. exd6 Qb6+ 20. Kh1 Bxf3 21. Rxf3 Ng5 22. Nd5 Qxd6 23. Qxd6 Nxd6 24. Rf2 Nde4 25. Re2 Rfd8 26. Nf4 Rd7 27. Kg1 Rad8 28. Nd3 f5 29. a4 bxa4 30. Rxa4 Rxd3 31. cxd3 Rxd3 32. h4 Rd1+ 33. Kh2 Ne6 34. Rxa6 Nf4 35. Rc2 Nf6 36. Nc5 Ng4+ 37. Kg3 Rf1 38. Ra1 Nh5+ 39. Kh3 Rxa1 40. g3 Rh1+ 41. Kg2 Rh2+ 0-1

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.22"]
[Round "9"]
[White "Ospina Castro, Santiago"]
[Black "Marin, Sebastian"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2075"]
[BlackElo "2315"]
[PlyCount "51"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. b3 Nc6 10. d5 Ne5 11. Be2 Re8 12. f4 Ned7 13. Nf3 Nf6 14. 0-0 e6 15. dxe6 Bxe6 16. Bd4 Nc8 17. Ng5 Bd7 18. Bf3 Bc6 19. f5 Ne7 20. fxg6 hxg6 21. Bd5 Nexd5 22. Nxd5 Bxd5 23. cxd5 Nxd5 24. Rxf7 Bxd4+ 25. Qxd4 Qb6 26. Rg7+ 1-0

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.22"]
[Round "10"]
[White "Rosales Campos, Paul"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "C13"]
[WhiteElo "2113"]
[BlackElo "2075"]
[PlyCount "94"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 gxf6 7. Nf3 f5 8. Ng3 c5 9. c3 cxd4 10. Nxd4 Bd7 11. Qh5 Nc6 12. Rd1 Nxd4 13. Rxd4 Bf6 14. Rd2 0-0 15. Be2 Qc7 16. 0-0 Bc6 17. Rfd1 Qf4 18. Bf3 Bxf3 19. Qxf3 Qxf3 20. gxf3 Rfd8 21. Rd7 Kf8 22. Nh5 Be7 23. Kf1 Ke8 24. Ng7+ Kf8 25. Nh5 Ke8 26. Ng7+ Kf8 27. Nh5 Rxd7 28. Rxd7 Rb8 29. Ke2 Ke8 30. Rc7 Kd8 31. Rc4 Rc8 32. Rd4+ Kc7 33. h3 Rd8 34. Rc4+ Kb8 35. Ng3 b5 36. Rd4 Rxd4 37. cxd4 Bf6 38. Kd3 Kc7 39. b4 Kc6 40. a3 Bh4 41. f4 Bxg3 42. fxg3 h5 43. Kc3 Kd5 44. Kd3 a6 45. Ke3 Kc4 46. h4 f6 47. g4 fxg4 0-1

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.21"]
[Round "8"]
[White "Chirivi Castiblanco, Jenny Astrid"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "D56"]
[WhiteElo "2146"]
[BlackElo "2075"]
[PlyCount "35"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 0-0 7. e3 Ne4 8. Bxe7 Qxe7 9. Qc2 Nxc3 10. Qxc3 c6 11. Bd3 dxc4 12. Bxc4 b6 13. 0-0 Bb7 14. Be2 Nd7 15. Rac1 Rfc8 16. Rfd1 c5 17. Qa3 a5 18. Qc3 1/2-1/2

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.21"]
[Round "7"]
[White "Ospina Castro, Santiago"]
[Black "Orbe Vivero, Veronica Priscila"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2075"]
[BlackElo "1636"]
[PlyCount "81"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 a5 13. Qf3 Be6 14. Rd1 Bxd5 15. Rxd5 Ne7 16. Rb5 Bg5 17. Be2 0-0 18. 0-0 Qc7 19. Qd3 g6 20. Rd1 Ra6 21. a3 bxa3 22. Qxa3 f5 23. c5 fxe4 24. Nb4 Raa8 25. cxd6 Qa7 26. Bc4+ Kh8 27. dxe7 Qxf2+ 28. Kh1 Bxe7 29. Rxa5 Rxa5 30. Qxa5 Qxb2 31. Nc6 Qc2 32. Qxe5+ Bf6 33. Qd6 Kg7 34. Qd7+ Kh8 35. Qd5 Kg7 36. Ne5 Bxe5 37. Qxe5+ Kh6 38. Qd4 Rf2 39. Qe3+ Kg7 40. Rd7+ Kf8 41. Qc5+ 1-0

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.20"]
[Round "5"]
[White "Ospina Castro, Santiago"]
[Black "Moreno Marino, Juan Nicolas"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2075"]
[BlackElo "1919"]
[PlyCount "81"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nc6 7. 0-0 Nf6 8. Be3 Be7 9. f4 d6 10. a4 0-0 11. Kh1 Nxd4 12. Qxd4 Bd7 13. a5 Rac8 14. e5 Ne8 15. Rfd1 d5 16. f5 Bc5 17. Qf4 Bxe3 18. Qxe3 Qc5 19. Qf4 f6 20. fxe6 Bxe6 21. Bf3 Rd8 22. exf6 Nxf6 23. Qd4 Qxd4 24. Rxd4 Rd6 25. Rad1 Rc8 26. Kg1 Rc5 27. Ra1 Rdc6 28. Kf2 Kf7 29. Ke3 Ke7 30. Kd2 g5 31. g3 Nd7 32. Re1 Rxa5 33. Nxd5+ Kf7 34. Nb4 Rb6 35. Nd3 Kf6 36. Rxe6+ Rxe6 37. Rxd7 h6 38. Rxb7 Ra1 39. c4 Rf1 40. Bd5 Re7 41. Rb6+ 1-0

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.20"]
[Round "6"]
[White "Rivera, Alberto"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2318"]
[BlackElo "2075"]
[PlyCount "128"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. dxc5 Bxc5 10. Qf2 Qb6 11. Bxc5 Nxc5 12. Bd3 b4 13. Ne2 a5 14. 0-0 Ba6 15. Rfd1 Na4 16. Qxb6 Nxb6 17. Kf2 Ke7 18. Ned4 Nxd4 19. Nxd4 Na4 20. Rab1 Rhc8 21. Re1 Nc5 22. Ke3 a4 23. b3 Nxd3 24. cxd3 Rc3 25. Red1 a3 26. Rbc1 Rac8 27. Rxc3 Rxc3 28. Rd2 Kd7 29. Ne2 Rc8 30. Kf2 h5 31. Ke3 g6 32. h4 Rc7 33. Kf2 Rc8 34. Ke1 Rc7 35. g3 Rc8 36. Kd1 Rc6 37. Ke1 Rc8 38. Kf2 Rc7 39. Ke3 Rc8 40. Kd4 Rc7 41. f5 gxf5 42. Nf4 Rc1 43. Nxh5 Kc6 44. Rh2 Rg1 45. Nf4 Rxg3 46. h5 Rg7 47. h6 Rh7 48. Rh5 Kd7 49. Kc5 Ke7 50. d4 f6 51. Kxb4 fxe5 52. dxe5 d4 53. Kxa3 Kf7 54. Kb2 Bb7 55. Kc2 Be4+ 56. Kd2 Rh8 57. h7 Kg7 58. Nxe6+ Kg6 59. Nf4+ Kg7 60. Rh3 Rxh7 61. Rxh7+ Kxh7 62. Ne6 Kg8 63. Nxd4 Kf7 64. Ke3 Ke7 1-0

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.19"]
[Round "4"]
[White "Lopez Rayo, Santiago"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2158"]
[BlackElo "2075"]
[PlyCount "87"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. Be2 b4 10. Nd1 Qb6 11. c3 bxc3 12. Nxc3 Rb8 13. Rb1 Qa7 14. Rc1 cxd4 15. Nxd4 Nxd4 16. Bxd4 Bc5 17. Bxc5 Qxc5 18. Nb5 Qb6 19. Nd6+ Ke7 20. b4 Bb7 21. b5 Kf8 22. Qb4 Kg8 23. Nxb7 Qxb7 24. Qd6 Rc8 25. Rxc8+ Qxc8 26. Qc6 Qf8 27. 0-0 Nb8 28. Qb7 g6 29. bxa6 Qc5+ 30. Kh1 Nc6 31. Bb5 Na7 32. Be8 Qf8 33. Bd7 Qc5 34. Rb1 d4 35. Be8 Kg7 36. Bxf7 Rf8 37. Bxe6+ Kh8 38. Qb4 Qxb4 39. Rxb4 Rxf4 40. Rb8+ Kg7 41. Rb7+ Kh6 42. g3 Rf2 43. Rxa7 d3 44. Rd7 1-0

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.19"]
[Round "3"]
[White "Ospina Castro, Santiago"]
[Black "Estrada Quintanilla, Juan David"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "2075"]
[BlackElo "1543"]
[PlyCount "57"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 g6 7. Be3 e6 8. Qd2 Bg7 9. 0-0-0 0-0 10. Nxc6 bxc6 11. Qxd6 Qxd6 12. Rxd6 Bb7 13. Rhd1 a5 14. f3 a4 15. a3 Rfc8 16. Bb6 Bf8 17. Rd8 Kg7 18. Rxc8 Bxc8 19. Rd4 Nd7 20. Bc7 Nc5 21. Bd6 Bxd6 22. Rxd6 Bb7 23. Na2 Kf8 24. Nb4 Rc8 25. Nd3 Nxd3+ 26. Bxd3 Ke7 27. Rd4 Ra8 28. e5 h5 29. h4 1-0

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.18"]
[Round "1"]
[White "Ospina Castro, Santiago"]
[Black "Cuervo Velasquez, Juan Manuel"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "2075"]
[BlackElo "1532"]
[PlyCount "56"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. 0-0 Nbd7 9. f4 exf4 10. Bxf4 Ne5 11. Qe1 Be7 12. Rd1 Qc7 13. Qg3 0-0 14. Kh1 b5 15. Nd4 b4 16. Nd5 Nxd5 17. exd5 Bd7 18. Nc6 Bxc6 19. dxc6 Qxc6 20. Bh6 Ng6 21. Bf3 Qxc2 22. Bxa8 Rxa8 23. Bg5 Bxg5 24. Qxg5 Qxb2 25. Qd5 Rf8 26. Rxf7 Rxf7 27. Rf1 Nf4 28. Qf3 Qxg2+ 0-1

[Event "Pereira Gildardo Garcia Memorial-A"]
[Site "Pereira"]
[Date "2022.05.18"]
[Round "2"]
[White "Rosero Zapata, Luis Fernando"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "D59"]
[WhiteElo "1935"]
[BlackElo "2075"]
[PlyCount "110"]
[EventDate "2022.05.18"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "COL"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Be7 5. Bg5 h6 6. Bh4 0-0 7. e3 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Qa4 c5 12. Qa3 Be6 13. Rc1 Rc8 14. Bb5 Qb7 15. 0-0 c4 16. Qd6 a6 17. Ba4 b5 18. Bc2 Qc7 19. Qxc7 Rxc7 20. Ne5 Nd7 21. f4 f6 22. Ng6 Nf8 23. Nh4 b4 24. Bf5 Rac8 25. Rf2 c3 26. b3 a5 27. Bc2 Ra8 28. a4 Re8 29. h3 Rce7 30. Re2 Bc8 31. Kf2 g5 32. fxg5 hxg5 33. Nf5 Bxf5 34. Bxf5 Kg7 35. Kf3 Ne6 36. Bxe6 Rxe6 37. g4 Kg6 38. Rce1 Re4 39. Rc1 f5 40. gxf5+ Kxf5 41. Rcc2 Kg6 42. Rc1 Rh8 43. Kg3 Reh4 44. Rh1 g4 45. Kf4 gxh3+ 46. Ke5 R8h5+ 47. Kd6 Rg4 48. Rhh2 Rg3 49. Kc5 Rhg5 50. Kb5 Rg2 51. Kxa5 Rxe2 52. Rxe2 Rg2 53. Re1 h2 54. Rh1 c2 55. Kxb4 Rg1 0-1

[Event "Medellin Easter op 10th"]
[Site "Medellin"]
[Date "2022.04.17"]
[Round "8"]
[White "Palencia Morales, Wilson Guillermo"]
[Black "Ospina Castro, Santiago"]
[Result "1/2-1/2"]
[ECO "C13"]
[WhiteElo "2317"]
[BlackElo "2043"]
[PlyCount "118"]
[EventDate "2022.04.13"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6 gxf6 7. c3 f5 8. Nd2 c5 9. Ngf3 Nc6 10. Bb5 Bd7 11. Nb3 cxd4 12. Nbxd4 Nxd4 13. Qxd4 Rg8 14. Bxd7+ Qxd7 15. Qxd7+ Kxd7 16. g3 Bf6 17. 0-0-0+ Kc7 18. Rd3 Rad8 19. Rhd1 Rxd3 20. Rxd3 h5 21. Kc2 h4 22. Kd1 hxg3 23. hxg3 Rg4 24. Nh2 Rg8 25. Ke2 Kc6 26. Nf3 Rg4 27. Nd2 Ra4 28. a3 Rg4 29. b3 b5 30. c4 a6 31. cxb5+ axb5 32. Nf1 Bb2 33. Ne3 Rg8 34. a4 bxa4 35. bxa4 Ra8 36. Nc4 Bf6 37. a5 Ra7 38. Rd2 Kb5 39. Nd6+ Kc6 40. Nc4 Kb5 41. Rc2 Kb4 42. Nd6 Be5 43. Rc4+ Kb3 44. Rc6 Bxd6 45. Rxd6 Rxa5 46. Rd7 f6 47. Rf7 Kc4 48. Rxf6 Kd5 49. Kf3 Ke5 50. Rf8 Ra3+ 51. Kg2 Ra2 52. Rb8 Kf6 53. Rb4 e5 54. Rb6+ Kg5 55. Re6 e4 56. Re8 Rb2 57. Re7 Ra2 58. Re6 Rb2 59. Re8 Ra2 1/2-1/2

[Event "Medellin Easter op 10th"]
[Site "Medellin"]
[Date "2022.04.16"]
[Round "6"]
[White "Care Garcia, Jose Joaquin"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1779"]
[BlackElo "2043"]
[PlyCount "110"]
[EventDate "2022.04.13"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Nc6 6. 0-0 Nge7 7. Re1 Bg4 8. c3 Qd7 9. Nbd2 f6 10. b4 0-0 11. Qc2 Bf5 12. Nb3 b6 13. Bd2 Bxd3 14. Qxd3 a5 15. a3 a4 16. Nc1 Nd8 17. Ne2 Ne6 18. Nh4 f5 19. f4 Ng6 20. Nxg6 hxg6 21. h4 c6 22. g3 Nc7 23. Kf2 Ne8 24. Ng1 Nf6 25. Nf3 Ne4+ 26. Kg2 Rac8 27. Rac1 Qf7 28. Ng5 Qb7 29. Rh1 Be7 30. Nxe4 fxe4 31. Qe2 Bd6 32. h5 g5 33. Qg4 Qe7 34. fxg5 e3 35. Be1 Rce8 36. g6 Qf6 37. Rc2 Re4 38. Qe2 Qg5 39. Rf1 Ree8 40. Rh1 Bxg3 41. Bxg3 Rf2+ 42. Qxf2 exf2 43. Rxf2 Re3 44. Rh3 Rxc3 45. Kh2 Rxa3 46. Re2 Re3 47. Rf2 a3 48. h6 gxh6 49. g7 Qxg7 50. Rg2 Kh7 51. Be5 Rxh3+ 52. Kxh3 Qxg2+ 53. Kxg2 a2 54. b5 a1Q 55. bxc6 Qb2+ 0-1

[Event "Medellin Easter op 10th"]
[Site "Medellin"]
[Date "2022.04.16"]
[Round "7"]
[White "Ospina Castro, Santiago"]
[Black "Palomino Escobar, Daniel Fernando"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2043"]
[BlackElo "1857"]
[PlyCount "87"]
[EventDate "2022.04.13"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nd7 3. Bb2 c6 4. g3 Qc7 5. d4 e6 6. Bg2 Bd6 7. c4 b6 8. 0-0 Ngf6 9. Nc3 0-0 10. Qc2 Bb7 11. Nd2 Be7 12. e4 dxe4 13. Ndxe4 Nxe4 14. Bxe4 Nf6 15. Bg2 Rad8 16. Rad1 Rd7 17. Rd2 Rfd8 18. Rfd1 Bb4 19. a3 Bxc3 20. Bxc3 c5 21. d5 exd5 22. Bxf6 gxf6 23. Bxd5 Bxd5 24. cxd5 Qe5 25. Qc4 Rd6 26. Kg2 Kg7 27. Rd3 R8d7 28. R1d2 h5 29. h4 Rd8 30. a4 R8d7 31. Kh2 Kf8 32. Re3 Qf5 33. Red3 Qe5 34. Kg2 Rd8 35. b4 cxb4 36. Qxb4 Kg7 37. Qc4 Kf8 38. Rd4 R8d7 39. Qd3 Rc7 40. Qh7 f5 41. Qxh5 Rc1 42. Qe2 f6 43. Qd3 Ra1 44. Re2 1-0

[Event "Medellin Easter op 10th"]
[Site "Medellin"]
[Date "2022.04.15"]
[Round "4"]
[White "Ospina Castro, Santiago"]
[Black "Rios Parra, Alejandro"]
[Result "1/2-1/2"]
[ECO "D34"]
[WhiteElo "2043"]
[BlackElo "2230"]
[PlyCount "96"]
[EventDate "2022.04.13"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. g3 e6 4. Bg2 d5 5. d4 Nc6 6. cxd5 exd5 7. 0-0 Be6 8. Nc3 Qa5 9. Bg5 Be7 10. dxc5 Qxc5 11. Rc1 Qa5 12. Nd4 Nxd4 13. Qxd4 0-0 14. Qa4 Qxa4 15. Nxa4 h6 16. Be3 b6 17. Rfd1 Rfd8 18. Bd4 Rac8 19. e3 Ne4 20. Nc3 Nxc3 21. Rxc3 Rxc3 22. Bxc3 f5 23. a3 Kf7 24. Kf1 Bf6 25. Bxf6 Kxf6 26. Ke2 Rc8 27. Kd2 g5 28. f4 Rc4 29. Rc1 gxf4 30. gxf4 d4 31. Rxc4 dxe3+ 32. Kxe3 Bxc4 33. Kd4 Be6 34. Bc6 a5 35. Bd5 Bd7 36. Bb7 Ke6 37. Bd5+ Kd6 38. Bf7 Bc8 39. b4 axb4 40. axb4 Bb7 41. Bc4 Bc8 42. Bd5 Ba6 43. Bf7 Bc8 44. Bc4 Bb7 45. Be2 Bc8 46. Bd3 Be6 47. Ba6 Bd7 48. Bb7 Be6 1/2-1/2

[Event "Medellin Easter op 10th"]
[Site "Medellin"]
[Date "2022.04.15"]
[Round "5"]
[White "Soto, Miguel Angel"]
[Black "Ospina Castro, Santiago"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2367"]
[BlackElo "2043"]
[PlyCount "61"]
[EventDate "2022.04.13"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 0-0 6. e3 Nbd7 7. Qc2 c6 8. h3 b6 9. cxd5 exd5 10. Be2 Bb7 11. 0-0 c5 12. Rfd1 c4 13. b3 Ba6 14. bxc4 Rc8 15. cxd5 Rxc3 16. Qxc3 Bxe2 17. d6 Bxd1 18. dxe7 Qxe7 19. Rxd1 Nd5 20. Qc6 Nxf4 21. exf4 Nf6 22. d5 Qe2 23. Rd2 Qe4 24. Rd4 Qb1+ 25. Kh2 Qxa2 26. d6 Qe6 27. Ne5 Rd8 28. Qc7 Rc8 29. Qxa7 g5 30. d7 Rd8 31. Qc7 1-0

[Event "Medellin Easter op 10th"]
[Site "Medellin"]
[Date "2022.04.14"]
[Round "3"]
[White "Iral Castro, Brahiam"]
[Black "Ospina Castro, Santiago"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1843"]
[BlackElo "2043"]
[PlyCount "58"]
[EventDate "2022.04.13"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 e6 4. Nd2 c5 5. c3 Nc6 6. Ngf3 Bd6 7. dxc5 Bxc5 8. e4 dxe4 9. Bxe4 Nxe4 10. Nxe4 Qxd1+ 11. Kxd1 Be7 12. Bf4 0-0 13. Kc2 f6 14. Nd6 Bxd6 15. Bxd6 Rd8 16. Rad1 e5 17. Ba3 Bf5+ 18. Kc1 Rxd1+ 19. Rxd1 Bg4 20. h3 Bxf3 21. gxf3 Rd8 22. Rxd8+ Nxd8 23. f4 exf4 24. Bd6 g5 25. Kd2 Kf7 26. a4 Ke6 27. Bc7 Nc6 28. b4 Kd7 29. Ba5 b6 0-1

