[Event "COL-ch U20"]
[Site "Bogota"]
[Date "2025.02.02"]
[Round "8"]
[White "Casas Mejia, Santiago"]
[Black "Sierra Isaza, Jose Eduardo"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "1537"]
[BlackElo "1687"]
[PlyCount "64"]
[EventDate "2025.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 a6 4. cxd5 cxd5 5. Bf4 Nc6 6. Nf3 Nf6 7. e3 Bf5 8. Be2 e6 9. Qb3 Na5 10. Qa4+ Nc6 11. Ne5 Qb6 12. 0-0 Be7 13. Rfc1 0-0 14. a3 Rac8 15. Bg5 Rfd8 16. Na2 Qxb2 17. Nxc6 Rxc6 18. Qd1 Rdc8 19. Rxc6 Rxc6 20. Bf3 Rc2 21. Bh4 Bxa3 22. h3 Bd3 23. Kh2 Bc4 24. Rb1 Qxa2 25. Rxb7 Ne8 26. Bh5 g6 27. Qf3 f5 28. Qg3 Bd6 29. f4 Bf1 30. Bf3 Qc4 31. Qg5 Qc8 32. Ra7 Rc7 0-1

[Event "COL-ch U20"]
[Site "Bogota"]
[Date "2025.02.02"]
[Round "9"]
[White "Vasquez Sanchez, Juan Pablo"]
[Black "Casas Mejia, Santiago"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "1606"]
[BlackElo "1537"]
[PlyCount "69"]
[EventDate "2025.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb5 Nf6 6. N1c3 a6 7. Be3 Qa5 8. e5 Nxe5 9. Bf4 Qb4 10. Nc7+ Kd8 11. Nxa8 Qxf4 12. Nb6 e6 13. Nxc8 Kxc8 14. Qd2 Qb4 15. 0-0-0 Bc5 16. f3 Rd8 17. Kb1 Nc6 18. a3 Qa5 19. Ne4 Qb6 20. Nxc5 Qxc5 21. Qe2 Nd5 22. Qd3 f5 23. c4 Nb6 24. b4 Qe5 25. b5 axb5 26. cxb5 Na4 27. Qb3 Nc3+ 28. Kc1 Nxd1 29. bxc6 dxc6 30. Bc4 Qa1+ 31. Kc2 Ne3+ 32. Qxe3 Qxh1 33. Qxe6+ Kc7 34. Qe5+ Rd6 35. Qe7+ 1/2-1/2

[Event "COL-ch U20"]
[Site "Bogota"]
[Date "2025.02.01"]
[Round "6"]
[White "Casas Mejia, Santiago"]
[Black "Sotelo Aguirre, Jeronimo"]
[Result "1-0"]
[ECO "A50"]
[WhiteElo "1537"]
[PlyCount "59"]
[EventDate "2025.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 b6 4. e3 Ba6 5. Nf3 Bb4 6. Bd2 d6 7. Qa4+ Nc6 8. Qxc6+ Ke7 9. a3 Qd7 10. Qxd7+ Nxd7 11. axb4 Nf6 12. Rxa6 Ng4 13. Bd3 c6 14. h3 Nf6 15. Ne4 Nxe4 16. Bxe4 d5 17. cxd5 cxd5 18. Bd3 Rac8 19. Rxa7+ Kf6 20. Ne5 Rhf8 21. Nd7+ Ke7 22. Nxf8+ Kxf8 23. Bxh7 Rc2 24. Bxc2 Ke8 25. b5 Kd8 26. 0-0 Kc8 27. Rfa1 f6 28. Bb4 e5 29. Ra8+ Kb7 30. R1a7# 1-0

[Event "COL-ch U20"]
[Site "Bogota"]
[Date "2025.02.01"]
[Round "7"]
[White "Moreno Sierra, Juan David"]
[Black "Casas Mejia, Santiago"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1692"]
[BlackElo "1537"]
[PlyCount "50"]
[EventDate "2025.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 h5 3. e3 e5 4. Bxe5 f6 5. Bd3 Rh6 6. Nf3 Bg4 7. h3 Bxf3 8. Qxf3 fxe5 9. dxe5 Nc6 10. e6 Ne5 11. Qf5 Qf6 12. e4 Qxe6 13. 0-0 Nxd3 14. cxd3 Qxf5 15. exf5 0-0-0 16. Nc3 Ne7 17. g4 hxg4 18. hxg4 Nc6 19. Rfe1 Nd4 20. Rf1 Bd6 21. f4 Rdh8 22. Nxd5 Rh1+ 23. Kg2 R8h2+ 24. Kg3 Rh3+ 25. Kg2 R1h2+ 0-1

[Event "COL-ch U20"]
[Site "Bogota"]
[Date "2025.01.31"]
[Round "4"]
[White "Casas Mejia, Santiago"]
[Black "Daza Ordonez, Sebastian Camilo"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "1537"]
[BlackElo "1680"]
[PlyCount "40"]
[EventDate "2025.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Bf5 5. h4 Nf6 6. Bf4 Nc6 7. a3 a6 8. e3 h6 9. Nf3 Bg4 10. Be2 e6 11. Ne5 Bxe2 12. Nxe2 Rc8 13. Qa4 Qa5+ 14. Qxa5 Nxa5 15. Nc3 Nb3 16. Rb1 Bxa3 17. Nxd5 Nxd5 18. bxa3 Nxf4 19. exf4 0-0 20. Nd3 Rc3 0-1

[Event "COL-ch U20"]
[Site "Bogota"]
[Date "2025.01.31"]
[Round "5"]
[White "Olaya, Horacio"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1707"]
[BlackElo "1537"]
[PlyCount "35"]
[EventDate "2025.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 e6 4. Nf3 Be7 5. 0-0 a6 6. Bxc6 bxc6 7. d3 d5 8. Bf4 Bb7 9. Ne5 Nf6 10. Qf3 Nd7 11. Nxf7 Qb6 12. Nxh8 0-0-0 13. Nf7 Rf8 14. Qh5 Nf6 15. Qh3 Nd7 16. Qxe6 Bf6 17. Bd6 Rg8 18. Na4 1-0

[Event "COL-ch U20"]
[Site "Bogota"]
[Date "2025.01.30"]
[Round "3"]
[White "Gaona Ballesteros, Andres"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "1865"]
[BlackElo "1537"]
[PlyCount "47"]
[EventDate "2025.01.29"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 g6 3. e4 d6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 Bg4 7. Be3 c6 8. a4 a5 9. Qd2 Nbd7 10. Rad1 Qc7 11. h3 Bxf3 12. Bxf3 e5 13. dxe5 dxe5 14. Qd6 Qxd6 15. Rxd6 h6 16. Rfd1 Rfe8 17. Rxd7 Nxd7 18. Rxd7 Rab8 19. Bb6 Ra8 20. Be2 Kh8 21. Rxf7 Reb8 22. Bc4 Ra6 23. Bc7 Re8 24. Bxa6 1-0

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2024.12.08"]
[Round "8"]
[White "Guevara Garcia, Samuel Alejandro"]
[Black "Casas Mejia, Santiago"]
[Result "1/2-1/2"]
[ECO "A34"]
[BlackElo "1494"]
[PlyCount "42"]
[EventDate "2024.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB50_2024"]
[SourceDate "2024.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.01"]
[SourceQuality "2"]

1. c4 c5 2. Nc3 d6 3. g3 Nf6 4. Bg2 Nc6 5. Nf3 e6 6. d3 Bd7 7. Qc2 Rc8 8. Bd2 Be7 9. Rc1 a6 10. h4 h5 11. Ng5 Ng4 12. Nce4 f5 13. Nc3 Bf6 14. Bf4 e5 15. Bd2 Qe7 16. Nd5 Qf8 17. f4 exf4 18. Bxf4 Nd4 19. Qd2 Ne6 20. Nxe6 Bxe6 21. Nb6 Rb8 1/2-1/2

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2024.12.07"]
[Round "6"]
[White "Vargas Diaz, David Alejandro"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "A15"]
[WhiteElo "1839"]
[BlackElo "1494"]
[PlyCount "47"]
[EventDate "2024.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB50_2024"]
[SourceDate "2024.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.01"]
[SourceQuality "2"]

1. c4 Nf6 2. e3 g6 3. a3 Bg7 4. Ne2 e5 5. Ng3 0-0 6. h4 d5 7. cxd5 Nxd5 8. Qc2 Be6 9. Nc3 Nc6 10. Nce4 h6 11. b4 f5 12. Nc5 Qc8 13. Bb2 f4 14. Nge4 fxe3 15. dxe3 Bf5 16. Bc4 Be6 17. 0-0-0 Rd8 18. Nxe6 Qxe6 19. Nc5 Qf7 20. e4 Qf4+ 21. Kb1 Nce7 22. exd5 Rd6 23. Ne6 Qg4 24. f3 1-0

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2024.12.06"]
[Round "4"]
[White "Casas Mejia, Santiago"]
[Black "Castillo Mesa, Ian Alexander"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1494"]
[PlyCount "10"]
[EventDate "2024.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB50_2024"]
[SourceDate "2024.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.01"]
[SourceQuality "2"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Nf6 5. Bg5 Bb4 1-0

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2024.12.06"]
[Round "5"]
[White "Soto Leguizamon, David Esteban"]
[Black "Casas Mejia, Santiago"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1644"]
[BlackElo "1494"]
[PlyCount "9"]
[EventDate "2024.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB50_2024"]
[SourceDate "2024.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.01"]
[SourceQuality "2"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. d4 Nc6 5. 0-0 0-1

[Event "Bogota Navidad op"]
[Site "Bogota"]
[Date "2024.12.05"]
[Round "3"]
[White "Casas Mejia, Santiago"]
[Black "Suarez Aldana, Eduard Davis"]
[Result "0-1"]
[ECO "A69"]
[WhiteElo "1494"]
[BlackElo "1745"]
[PlyCount "44"]
[EventDate "2024.12.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CB50_2024"]
[SourceDate "2024.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.01"]
[SourceQuality "2"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 Re8 8. Be2 e6 9. Qc2 exd5 10. cxd5 Nbd7 11. 0-0 a6 12. a4 Rb8 13. Be3 Qe7 14. Nd2 Nb6 15. a5 Nbxd5 16. Bxc5 dxc5 17. exd5 Bf5 18. Qb3 Qe3+ 19. Rf2 Qxd2 20. Bb5 Re1+ 21. Rxe1 Qxe1+ 22. Bf1 Ng4 0-1

[Event "Pereira Cosecha op"]
[Site "Pereira"]
[Date "2024.09.01"]
[Round "8"]
[White "Paez Colmenares, Adolfo"]
[Black "Casas Mejia, Santiago"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "1660"]
[BlackElo "1432"]
[PlyCount "14"]
[EventDate "2024.08.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nf3 e5 6. Bc4 Nf6 7. Nc3 Bb4 0-1

[Event "Pereira Cosecha op"]
[Site "Pereira"]
[Date "2024.08.31"]
[Round "7"]
[White "Casas Mejia, Santiago"]
[Black "Giraldo Bejarano, Alejandro"]
[Result "1-0"]
[ECO "E76"]
[WhiteElo "1432"]
[BlackElo "1431"]
[PlyCount "19"]
[EventDate "2024.08.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 Nbd7 6. Nf3 0-0 7. Be2 Re8 8. 0-0 e5 9. fxe5 dxe5 10. d5 1-0

[Event "Pereira Cosecha op"]
[Site "Pereira"]
[Date "2024.08.31"]
[Round "6"]
[White "Casas Mejia, Santiago"]
[Black "Martinez Garcia, Oscar Mauricio"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "1432"]
[BlackElo "1410"]
[PlyCount "68"]
[EventDate "2024.08.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 h6 4. cxd5 exd5 5. Qc2 Nf6 6. Nf3 Nc6 7. Bf4 Bd6 8. Bxd6 Qxd6 9. a3 0-0 10. e3 Re8 11. Bd3 Bg4 12. Nb5 Qe7 13. Nd2 a6 14. Nc3 Nxd4 15. Qa4 Nc6 16. Nxd5 Nxd5 17. Qxg4 Rad8 18. 0-0 Nf6 19. Qc4 Ne5 20. Qc2 Nxd3 21. Nf3 Ne5 22. Nd4 g6 23. f4 Nc6 24. Nxc6 bxc6 25. Rf3 Qe4 26. Qc3 Kg7 27. Rh3 Rd3 28. Qa5 Rxe3 29. Qxa6 Rxh3 30. gxh3 Qe3+ 31. Kh1 Qf3+ 32. Kg1 Re2 33. Qxc6 Qxc6 34. Rf1 Qg2# 0-1

[Event "Pereira Cosecha op"]
[Site "Pereira"]
[Date "2024.08.30"]
[Round "5"]
[White "Caicedo Vallejo, Jacobo"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B32"]
[WhiteElo "1572"]
[BlackElo "1432"]
[PlyCount "115"]
[EventDate "2024.08.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 e6 6. Nc3 Bb4 7. Bd2 Nge7 8. Bc4 0-0 9. 0-0 a6 10. a3 Bd6 11. Re1 Qc7 12. h3 Ng6 13. Qe2 b6 14. Rad1 Nce5 15. Bd3 Bb7 16. Be3 f5 17. exf5 Nxd3 18. Qxd3 Qc6 19. f3 Nh4 20. Qxd6 Nxf3+ 21. Kf2 Nxe1 22. Qxc6 Bxc6 23. Kxe1 Rxf5 24. Nd4 Re5 25. Nxc6 Rxe3+ 26. Kf2 Rxc3 27. bxc3 dxc6 28. Rd6 Rf8+ 29. Ke3 Rf6 30. Rxc6 e5 31. Rc7 h5 32. Re7 Rg6 33. Kf2 Rc6 34. Rxe5 Rxc3 35. Rxh5 Rxc2+ 36. Kg1 Ra2 37. Rg5 Rxa3 38. Rg6 b5 39. Rb6 Ra1+ 40. Kf2 Kf7 41. Kf3 Ke7 42. Ke4 Kd7 43. Rb7+ Kc6 44. Rxg7 a5 45. Kd3 a4 46. Kc3 Kc5 47. Rg5+ Kb6 48. Kb2 Rf1 49. h4 Rf2+ 50. Ka3 Re2 51. h5 Ka5 52. h6 Re3+ 53. Kb2 Re2+ 54. Kc1 Re1+ 55. Kd2 a3 56. h7 Rh1 57. Rg3 Ka4 58. Rh3 1-0

[Event "Pereira Cosecha op"]
[Site "Pereira"]
[Date "2024.08.30"]
[Round "4"]
[White "Casas Mejia, Santiago"]
[Black "Lopez Ocampo, Juan Esteban"]
[Result "0-1"]
[ECO "D85"]
[WhiteElo "1432"]
[BlackElo "1611"]
[PlyCount "100"]
[EventDate "2024.08.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Be2 Nc6 9. Be3 Bg4 10. e5 0-0 11. 0-0 Qc7 12. h3 Bxf3 13. Bxf3 Rad8 14. Qa4 cxd4 15. cxd4 Qd7 16. Rfd1 Nxe5 17. Qxa7 Nxf3+ 18. gxf3 Qxh3 19. Qxb7 f5 20. f4 e5 21. dxe5 Rxd1+ 22. Rxd1 Qg4+ 23. Kh2 Qxd1 24. e6 Qd6 25. a4 Qxe6 26. a5 Qf7 27. Qb6 Qf6 28. Qb5 h5 29. a6 Bh6 30. a7 Bxf4+ 31. Bxf4 Qh4+ 32. Kg2 Qxf4 33. a8Q Rxa8 34. Qd5+ Kg7 35. Qxa8 Qe4+ 36. Qxe4 fxe4 37. Kg3 g5 38. Kh3 Kf6 39. Kg3 Kf5 40. Kh3 Kf4 41. Kg2 g4 42. Kf1 h4 43. Kg1 h3 44. Kh1 Kf3 45. Kg1 h2+ 46. Kxh2 Kxf2 47. Kh1 e3 48. Kh2 e2 49. Kh1 e1Q+ 50. Kh2 Qg1# 0-1

[Event "Pereira Cosecha op"]
[Site "Pereira"]
[Date "2024.08.29"]
[Round "3"]
[White "Perez Latorre, Juan Sebastian"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1755"]
[BlackElo "1432"]
[PlyCount "63"]
[EventDate "2024.08.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 e6 7. Nc3 Bb4 8. Bd2 0-0 9. Bd3 a6 10. Bxh7+ Kxh7 11. Ng5+ Kg6 12. h4 Nf6 13. Qc2+ Kh5 14. exf6 Qxf6 15. Qh7+ Qh6 16. g4+ Kxg4 17. Qe4+ Kh5 18. Qf3+ Kg6 19. h5+ Qxh5 20. Qxh5+ Kf6 21. Nh7+ Ke7 22. Bg5+ f6 23. Nxf8 Kxf8 24. Qh8+ Ke7 25. Qxg7+ Kd6 26. Bf4+ e5 27. Qxf6+ Kc7 28. Bxe5+ d6 29. Bxd6+ Bxd6 30. Nd5+ Kd7 31. Qf5+ Kd8 32. Rh8+ 1-0

[Event "Pereira Cosecha op"]
[Site "Pereira"]
[Date "2024.08.28"]
[Round "1"]
[White "Casas Mejia, Santiago"]
[Black "Cardona Duque, Juan Esteban"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "1432"]
[BlackElo "1756"]
[PlyCount "60"]
[EventDate "2024.08.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nc6 5. Nf3 Nf6 6. Bf4 e6 7. e3 Bb4 8. Be2 Ne4 9. Qc2 0-0 10. 0-0 Nd6 11. a3 Ba5 12. b4 Bc7 13. b5 Ne7 14. Ng5 Ng6 15. Nf3 Nxf4 16. exf4 Bd7 17. Rac1 Rc8 18. Ng5 g6 19. a4 Nf5 20. Qd2 Ba5 21. Qd3 Qc7 22. Nxd5 Qxc1 23. Rxc1 Rxc1+ 24. Bf1 exd5 25. Qa3 Re1 26. Nxh7 Kxh7 27. Qxf8 Be6 28. g3 Nxd4 29. Qb8 Bh3 30. Qe5 Rxf1# 0-1

[Event "American Continental Rapid 18th"]
[Site "Medellin"]
[Date "2024.06.01"]
[Round "5"]
[White "Casas Mejia, Santiago"]
[Black "Alvarez Vargas, Andres"]
[Result "1/2-1/2"]
[ECO "E78"]
[WhiteElo "1476"]
[PlyCount "61"]
[EventDate "2024.06.01"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 Bg4 7. Be2 c5 8. d5 e5 9. fxe5 dxe5 10. Nxe5 Bxe2 11. Qxe2 Nxe4 12. Nxe4 Bxe5 13. Nxc5 Qa5+ 14. Bd2 Qxc5 15. Qxe5 Na6 16. 0-0-0 Qxc4+ 17. Bc3 f6 18. Qe6+ Kg7 19. Kb1 Rae8 20. Bxf6+ Rxf6 21. Qxe8 Nb4 22. Qe7+ Rf7 23. Qe5+ Kg8 24. Qe8+ Kg7 25. Qe5+ Kg8 26. Qe8+ Rf8 27. Qe6+ Kg7 28. Qe5+ Kg8 29. Qe6+ Kg7 30. Qe5+ Kg8 31. Qe6+ 1/2-1/2

[Event "American Continental Rapid 18th"]
[Site "Medellin"]
[Date "2024.06.01"]
[Round "1"]
[White "Casas Mejia, Santiago"]
[Black "Hernandez Banquett, Bryan Steven"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "1476"]
[BlackElo "1913"]
[PlyCount "42"]
[EventDate "2024.06.01"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3 axb5 6. Nxb5 Qa5+ 7. Nc3 Ba6 8. Nf3 g6 9. g3 Bg7 10. Bd2 0-0 11. Bg2 d6 12. 0-0 Nbd7 13. Re1 Rfb8 14. Qc2 Qc7 15. e4 Ng4 16. Rab1 Nge5 17. Be3 Bd3 18. Qc1 Bxb1 19. Qxb1 c4 20. a3 Nd3 21. Re2 Bxc3 0-1

[Event "American Continental Rapid 18th"]
[Site "Medellin"]
[Date "2024.06.01"]
[Round "7"]
[White "Casas Mejia, Santiago"]
[Black "Munera Arango, Alejandro"]
[Result "0-1"]
[ECO "E40"]
[WhiteElo "1476"]
[BlackElo "1796"]
[PlyCount "45"]
[EventDate "2024.06.01"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Bxc3+ 5. bxc3 0-0 6. Bd3 b6 7. Nf3 Bb7 8. Bb2 d6 9. 0-0 Nbd7 10. Qe2 e5 11. e4 Qe7 12. d5 Nc5 13. Bc2 Nh5 14. Qd2 Bc8 15. Rfe1 Bg4 16. Qe3 Nf4 17. h3 Bh5 18. a4 a5 19. Kh1 Qf6 20. Qd2 Nxh3 21. Nh2 Nxf2+ 22. Kg1 Ng4 23. Nf3 0-1

[Event "American Continental Rapid 18th"]
[Site "Medellin"]
[Date "2024.06.01"]
[Round "3"]
[White "Casas Mejia, Santiago"]
[Black "Zapata Urrego, Camilo"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "1476"]
[BlackElo "1473"]
[PlyCount "63"]
[EventDate "2024.06.01"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 Bxc3+ 5. bxc3 d5 6. cxd5 exd5 7. Bg5 0-0 8. e3 Nbd7 9. Bd3 b6 10. Nf3 Bb7 11. 0-0 c5 12. Bxh7+ Kh8 13. Bf5 Bc6 14. Ne5 Bb5 15. Rfe1 cxd4 16. cxd4 Rc8 17. Qb2 Ba4 18. Qa3 Bc6 19. Rac1 Bb5 20. Rxc8 Qxc8 21. Bxf6 gxf6 22. Nxd7 Bxd7 23. Bxd7 Qxd7 24. Qxf8+ Kh7 25. h3 Qc7 26. e4 dxe4 27. Rxe4 Qc1+ 28. Kh2 Qc7+ 29. g3 Qc2 30. Qxf7+ Kh6 31. Qxf6+ Kh5 32. Rh4# 1-0

[Event "American Continental Rapid 18th"]
[Site "Medellin"]
[Date "2024.06.01"]
[Round "6"]
[White "Ceballos Castellanos, Isabela"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1855"]
[BlackElo "1476"]
[PlyCount "59"]
[EventDate "2024.06.01"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 Nf6 5. Bc4 Be7 6. d3 d5 7. Bb3 dxe4 8. Ne5 exd3 9. Nxd3 0-0 10. Qe2 Nd4 11. Qf2 Qc7 12. Ne5 Rd8 13. 0-0 b6 14. Be3 Nxb3 15. axb3 Bb7 16. Nb5 Qc8 17. Nxa7 Qc7 18. Nb5 Qb8 19. Rxa8 Qxa8 20. Nc3 h6 21. Qg3 b5 22. f5 exf5 23. Bxh6 g6 24. Nxg6 Ng4 25. Nxe7+ Kh7 26. Rxf5 Qa1+ 27. Rf1 Qxb2 28. Rxf7+ Kh8 29. Bg7+ Kh7 30. Qh4+ 1-0

[Event "American Continental Rapid 18th"]
[Site "Medellin"]
[Date "2024.06.01"]
[Round "4"]
[White "Gonzalez Bolivar, Juan Jose"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1898"]
[BlackElo "1476"]
[PlyCount "49"]
[EventDate "2024.06.01"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. d3 Nf6 5. Bb3 Be7 6. c3 0-0 7. 0-0 Qc7 8. Re1 d5 9. e5 Nd7 10. d4 c4 11. Bc2 b6 12. Bf4 Bb7 13. Nbd2 Qc8 14. Nf1 f6 15. Bg3 fxe5 16. Nxe5 Ndxe5 17. Bxe5 Qe8 18. Qg4 Qf7 19. f3 Nxe5 20. Rxe5 h5 21. Rxh5 Bd6 22. Bh7+ Kh8 23. Bg6+ Kg8 24. Rh8+ Kxh8 25. Qh5+ 1-0

[Event "American Continental Rapid 18th"]
[Site "Medellin"]
[Date "2024.06.01"]
[Round "2"]
[White "Toro Castaneda, Elizabeth"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B32"]
[WhiteElo "1949"]
[BlackElo "1476"]
[PlyCount "37"]
[EventDate "2024.06.01"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 e6 6. g3 Nf6 7. Bg2 Bb4+ 8. c3 0-0 9. cxb4 Qxb4+ 10. Bd2 Qe7 11. 0-0 d5 12. exd5 exd5 13. Nc3 Be6 14. Be3 Rfd8 15. Nd4 Nxd4 16. Bxd4 Nd7 17. Nxd5 Bxd5 18. Bxd5 Nf8 19. Qg4 1-0

[Event "Bogota Centro Comercial op 2nd"]
[Site "Bogota"]
[Date "2024.04.14"]
[Round "2"]
[White "Casas Mejia, Santiago"]
[Black "Forero, Edwin Johann"]
[Result "0-1"]
[ECO "D41"]
[WhiteElo "1659"]
[BlackElo "1962"]
[PlyCount "84"]
[EventDate "2024.04.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 0-0 11. Bd3 b6 12. 0-0 Bb7 13. Qe3 Nd7 14. e5 h6 15. Rac1 Rc8 16. Rc2 Ba6 17. Rxc8 Qxc8 18. Qe4 Bxd3 19. Qxd3 Qc7 20. h3 Rc8 21. d5 Nxe5 22. Nxe5 Qxe5 23. d6 Rd8 24. d7 Qd5 25. Qxd5 exd5 26. Rd1 Rxd7 27. Kf1 Kf8 28. Ke2 Ke7 29. Ke3 d4+ 30. Rxd4 Rxd4 31. Kxd4 Kd6 32. Kc4 a6 33. a4 g5 34. g3 f5 35. f3 h5 36. Kb4 Ke5 37. Kc4 b5+ 38. axb5 axb5+ 39. Kxb5 Kd4 40. Kc6 Ke3 41. Kd5 Kxf3 42. Ke5 f4 0-1

[Event "Bogota Centro Comercial op 2nd"]
[Site "Bogota"]
[Date "2024.04.14"]
[Round "6"]
[White "Casas Mejia, Santiago"]
[Black "Santos Contreras, Victor Andres"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "1659"]
[PlyCount "104"]
[EventDate "2024.04.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. cxd5 cxd5 5. Bf4 Bd6 6. Bxd6 Qxd6 7. Rc1 Bd7 8. e3 f5 9. Nf3 Nf6 10. Bb5 0-0 11. Bxd7 Nbxd7 12. Nb5 Qb4+ 13. Nc3 Qxb2 14. 0-0 Rac8 15. Qd3 Ne4 16. Na4 Qxa2 17. Rxc8 Rxc8 18. Nc5 Ndxc5 19. dxc5 Rxc5 20. h3 Qc4 21. Qa3 a5 22. Ne5 Qc3 23. Qa4 Rc8 24. Nf3 Qb4 25. Qd7 Rc6 26. Qe8+ Qf8 27. Qd7 Qc8 28. Qe7 Rc7 29. Qa3 Rc5 30. Ne5 Qc7 31. Nf3 b5 32. Nd4 Qc8 33. Qxa5 e5 34. Nb3 Qc7 35. Qa8+ Qc8 36. Qa7 Rc3 37. Na5 Nd2 38. Rd1 Rc1 39. Rxc1 Qxc1+ 40. Kh2 Nf1+ 41. Kg1 Nxe3+ 42. Kh2 Nf1+ 43. Kg1 h6 44. Qb8+ Kh7 45. Qxb5 Nd2+ 46. Kh2 Ne4 47. Qxd5 Qf4+ 48. Kg1 Qxf2+ 49. Kh1 Ng3+ 50. Kh2 Nf1+ 51. Kh1 Qe1 52. Nc4 Ne3+ 0-1

[Event "Bogota Centro Comercial op 2nd"]
[Site "Bogota"]
[Date "2024.04.14"]
[Round "7"]
[White "Piza Rodriguez, Alejandro"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B32"]
[WhiteElo "1520"]
[BlackElo "1659"]
[PlyCount "75"]
[EventDate "2024.04.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 e6 6. Be3 Qc7 7. Be2 Nf6 8. f3 d5 9. exd5 exd5 10. 0-0 Be7 11. Qd2 0-0 12. Nc3 Rd8 13. Nb5 Qb8 14. Bf4 Ne5 15. Rfe1 Bd6 16. Nxd6 Qxd6 17. Rad1 Qe7 18. Bb5 Qd6 19. Bxe5 Qb6+ 20. Nd4 a6 21. Bxf6 Qxf6 22. Qe3 h6 23. Bd3 Bd7 24. Qe7 Qxd4+ 25. Kh1 Qb6 26. b3 Re8 27. Qxd7 Rxe1+ 28. Rxe1 Rf8 29. Re8 Qa5 30. Rxf8+ Kxf8 31. Qc8+ Ke7 32. Qxb7+ Kf8 33. Qb8+ Ke7 34. Qe5+ Kf8 35. a4 f6 36. Qe6 Qc7 37. Bg6 a5 38. Qe8# 1-0

[Event "Bogota Centro Comercial op 2nd"]
[Site "Bogota"]
[Date "2024.04.14"]
[Round "3"]
[White "Porras Aldana, David Felipe"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B22"]
[BlackElo "1659"]
[PlyCount "7"]
[EventDate "2024.04.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 1-0

[Event "Bogota Centro Comercial op 2nd"]
[Site "Bogota"]
[Date "2024.04.14"]
[Round "5"]
[White "Segura Causil, Maria Carolina"]
[Black "Casas Mejia, Santiago"]
[Result "0-1"]
[ECO "C20"]
[BlackElo "1659"]
[PlyCount "54"]
[EventDate "2024.04.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. e4 e5 2. f3 d5 3. Nc3 d4 4. Nce2 Nc6 5. d3 f5 6. Nh3 f4 7. c3 Be6 8. Qa4 Bd7 9. Qc4 Nf6 10. g3 Na5 11. Qf7+ Kxf7 12. gxf4 dxc3 13. Nxc3 Bb4 14. fxe5 Bxh3 15. Bxh3 Qxd3 16. Bf1 Bxc3+ 17. bxc3 Qxc3+ 18. Bd2 Qxa1+ 19. Ke2 Nc4 20. exf6 Nxd2 21. fxg7 Kxg7 22. Kxd2 Rad8+ 23. Ke3 Qe1+ 24. Kf4 Rhf8+ 25. Kg4 h5+ 26. Kxh5 Kh7 27. Rg1 Qh4+ 0-1

[Event "COL-ch U18"]
[Site "Ibague"]
[Date "2024.03.17"]
[Round "6"]
[White "Casas Mejia, Santiago"]
[Black "Lozada Timote, Samuel Alejandro"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "1400"]
[PlyCount "55"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c5 3. cxd5 Qxd5 4. Nc3 Qd6 5. Nb5 Qb6 6. e4 Nc6 7. dxc5 Qa5+ 8. b4 Qxb4+ 9. Bd2 Qxc5 10. Nc7+ Kd8 11. Bb4+ Kxc7 12. Bxc5 Nf6 13. Bd3 e6 14. Bxf8 Rxf8 15. Nf3 Rd8 16. Rc1 Nxe4 17. 0-0 e5 18. Qc2 Rd6 19. Bxe4 Bd7 20. Bxc6 bxc6 21. Nxe5 Rd8 22. Nxf7 Be6 23. Nxd8 Kxd8 24. Rfd1 Bd5 25. Qxh7 a5 26. Qh8+ Kc7 27. Qxg7+ Kb6 28. Rb1+ 1-0

[Event "COL-ch U18"]
[Site "Ibague"]
[Date "2024.03.16"]
[Round "4"]
[White "Casas Mejia, Santiago"]
[Black "Contreras Gonzalez, Cristian David"]
[Result "0-1"]
[ECO "E76"]
[WhiteElo "1400"]
[BlackElo "1558"]
[PlyCount "28"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 Bg4 6. Nf3 0-0 7. Be2 Nbd7 8. 0-0 Ne8 9. Qd3 c5 10. d5 f5 11. Ng5 fxe4 12. Qxe4 Bf5 13. Qe3 Bd4 14. Kh1 Bxe3 0-1

[Event "COL-ch U18"]
[Site "Ibague"]
[Date "2024.03.16"]
[Round "5"]
[White "Vina Baquero, Julian David"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "A01"]
[BlackElo "1400"]
[PlyCount "45"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 a6 5. Bxc6 bxc6 6. Bxe5 Bb7 7. Nf3 d5 8. d3 Be7 9. Nbd2 0-0 10. 0-0 Qd7 11. c4 dxc4 12. Nxc4 Qg4 13. Na5 Ra7 14. Bxc7 Ba8 15. Bb6 Rd7 16. Ne5 Qg5 17. f4 Qh6 18. Nxd7 Nxd7 19. Bd4 Qg6 20. Rf3 Qh6 21. Rh3 Qe6 22. Qh5 f6 23. Qxh7+ 1-0

[Event "COL-ch U18"]
[Site "Ibague"]
[Date "2024.03.15"]
[Round "2"]
[White "Casas Mejia, Santiago"]
[Black "Cuellar Sanchez, Matias"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "1400"]
[BlackElo "1570"]
[PlyCount "104"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nc3 b4 5. Nb1 g6 6. Nd2 Bg7 7. e4 d6 8. f4 Qc7 9. Ngf3 0-0 10. Be2 a5 11. 0-0 a4 12. Rb1 e6 13. b3 Ng4 14. Qe1 Ne3 15. Rf2 Nc2 16. Qf1 axb3 17. axb3 Na3 18. Rb2 Bxb2 19. Bxb2 Nc2 20. h3 Ne3 21. Qe1 exd5 22. cxd5 Ra2 23. Qb1 Qa7 24. Bd3 f5 25. Re2 fxe4 26. Bxe4 c4 27. Bxg6 Nc2+ 28. Kh1 hxg6 29. Qxc2 Bf5 30. Qc1 c3 31. Bxc3 bxc3 32. Qxc3 Rc2 33. Qb4 Rc1+ 34. Kh2 Qc7 35. Ng5 Na6 36. Qa3 Ra8 37. g4 Bd7 38. Re7 Qc2 39. Re2 Qd1 40. Rg2 Rc5 41. Qb2 Rxd5 42. Nde4 Rf8 43. Nf6+ Rxf6 44. Qxf6 Rxg5 45. Qd8+ Kf7 46. Qxd7+ Kf8 47. fxg5 Qd4 48. Qc8+ Kf7 49. Qd7+ Kf8 50. Qd8+ Kf7 51. Qf6+ Qxf6 52. gxf6 Kxf6 1-0

[Event "COL-ch U18"]
[Site "Ibague"]
[Date "2024.03.15"]
[Round "3"]
[White "Sanchez Barreto, Josue Efrain"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1734"]
[BlackElo "1400"]
[PlyCount "36"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nc3 Bg7 4. e4 d6 5. Qd2 c6 6. 0-0-0 b5 7. f3 a5 8. Kb1 a4 9. h4 a3 10. b3 b4 11. Nce2 0-0 12. Bh6 c5 13. dxc5 Ra6 14. Bxg7 Kxg7 15. Nf4 Rc6 16. e5 dxe5 17. Qxd8 Rxd8 18. Rxd8 exf4 1-0

[Event "COL-ch U18"]
[Site "Ibague"]
[Date "2024.03.14"]
[Round "1"]
[White "Gutierrez Pinzon, Sebastian"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1763"]
[BlackElo "1400"]
[PlyCount "49"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. Nc3 Bg7 4. e4 0-0 5. Qd2 d6 6. 0-0-0 Ne8 7. h4 f5 8. h5 Bxd4 9. Qxd4 e5 10. Bxe5 Nc6 11. Bc4+ Rf7 12. hxg6 Qg5+ 13. Qe3 Qxe3+ 14. fxe3 Nxe5 15. Bxf7+ Nxf7 16. gxf7+ Kxf7 17. exf5 Bxf5 18. Rf1 Kg6 19. Nd5 Be4 20. Nf4+ Kg7 21. Ne6+ Kg6 22. Nf3 Bd5 23. Nh4+ Kh5 24. Nf5+ Kg6 25. Ne7# 1-0

[Event "Calle rapid op"]
[Site "Calle"]
[Date "2024.03.10"]
[Round "4"]
[White "Casas Mejia, Santiago"]
[Black "Lerma Munoz, Luis Alberto"]
[Result "1-0"]
[ECO "E46"]
[WhiteElo "1663"]
[PlyCount "89"]
[EventDate "2024.03.10"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Nge2 d5 6. b3 c5 7. a3 Bxc3+ 8. Nxc3 dxc4 9. Bxc4 b6 10. 0-0 Nc6 11. dxc5 Qxd1 12. Rxd1 bxc5 13. Bb2 Bb7 14. Na4 Ne4 15. f3 Nf6 16. Bxf6 gxf6 17. Nxc5 Bc8 18. Rd6 Ne5 19. Be2 f5 20. f4 Ng4 21. e4 Ne3 22. Bf3 Rb8 23. b4 Rb6 24. Rd3 fxe4 25. Bxe4 Nc2 26. Rc1 Nxb4 27. axb4 Rxb4 28. Rg3+ Kh8 29. Rh3 Rxe4 30. Nxe4 Bb7 31. Nf6 Kg7 32. Nxh7 Rh8 33. Rcc3 Rxh7 34. Rxh7+ Kxh7 35. Rc7 Be4 36. Rxf7+ Kg6 37. Rxa7 Kf5 38. g3 Kg4 39. Re7 Bf5 40. Kh1 Be4+ 41. Kg1 Bf5 42. Kf2 Kh3 43. Rg7 Kxh2 44. g4 Be4 45. Rh7+ 1-0

[Event "Calle rapid op"]
[Site "Calle"]
[Date "2024.03.10"]
[Round "2"]
[White "Casas Mejia, Santiago"]
[Black "Marino Sanchez, Joao"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1663"]
[PlyCount "19"]
[EventDate "2024.03.10"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 b6 2. c4 g6 3. Nc3 Bg7 4. Bf4 Nh6 5. Nf3 0-0 6. Qd2 Ba6 7. Bxh6 Bxh6 8. Qxh6 Nc6 9. Ng5 e6 10. Qxh7# 1-0

[Event "Calle rapid op"]
[Site "Calle"]
[Date "2024.03.10"]
[Round "6"]
[White "Casas Mejia, Santiago"]
[Black "Urquijo Prada, Juan Pablo"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1663"]
[BlackElo "1509"]
[PlyCount "69"]
[EventDate "2024.03.10"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c5 3. e3 cxd4 4. exd4 e6 5. Nc3 Qa5 6. cxd5 exd5 7. Nf3 Nf6 8. Bg5 Be7 9. Bb5+ Nbd7 10. Nd2 0-0 11. 0-0 h6 12. Bh4 Bb4 13. Rc1 Bxc3 14. bxc3 Qxb5 15. a4 Qc6 16. Qf3 Qxa4 17. c4 dxc4 18. Nxc4 b5 19. Qxa8 bxc4 20. Qf3 Ba6 21. h3 c3 22. Rfe1 c2 23. Qe3 Re8 24. Qd2 Rxe1+ 25. Qxe1 Qxd4 26. Bxf6 Nxf6 27. Rxc2 Bd3 28. Rd2 Ne4 29. Rd1 Nc3 30. Rd2 Ne4 31. Rd1 Nc3 32. Ra1 Ne2+ 33. Kh1 Nf4 34. Rd1 Ne2 35. Qxe2 1-0

[Event "Calle rapid op"]
[Site "Calle"]
[Date "2024.03.10"]
[Round "5"]
[White "Cruz, David1"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B22"]
[BlackElo "1663"]
[PlyCount "61"]
[EventDate "2024.03.10"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 Qb6 4. d4 g6 5. d5 Nd8 6. c4 Bg7 7. Nc3 d6 8. Be2 e5 9. dxe6 Bxe6 10. 0-0 Nf6 11. Na4 Qc7 12. Bf4 0-0 13. Bxd6 Qd7 14. Bxf8 Qxd1 15. Rfxd1 Bxf8 16. e5 Nd7 17. Nc3 Bg7 18. Ng5 Nc6 19. Nxe6 fxe6 20. Rxd7 Nxe5 21. Rxb7 a5 22. Rd1 a4 23. f4 Nf7 24. Rdd7 Rf8 25. Bg4 Bd4+ 26. Kh1 Rd8 27. Rxf7 Bxc3 28. bxc3 Rd3 29. Rg7+ Kf8 30. Rxh7 Kg8 31. Bxe6+ 1-0

[Event "Calle rapid op"]
[Site "Calle"]
[Date "2024.03.10"]
[Round "1"]
[White "Reyes Aristizabal, Andres"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "B21"]
[BlackElo "1663"]
[PlyCount "41"]
[EventDate "2024.03.10"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "CBM 219 Extra"]
[Source "ChessBase"]
[SourceDate "2024.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.05.31"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 Qb6 6. Nd5 Qd8 7. Bf4 d6 8. Bb5 e5 9. Bg5 Nge7 10. 0-0 a6 11. Ba4 b5 12. Bb3 g6 13. Bf6 Rg8 14. Rc1 Qd7 15. Nb6 Qb7 16. Nxa8 Qxa8 17. Qxd6 Bd7 18. Bd5 Bh6 19. Rxc6 Bxc6 20. Bxc6+ Qxc6 21. Qxe7# 1-0

[Event "COL-ch U12"]
[Site "Choconta"]
[Date "2023.03.20"]
[Round "6"]
[White "Casas Mejia, Santiago"]
[Black "Castaneda Munoz, Gabriel Eduardo"]
[Result "0-1"]
[ECO "A40"]
[WhiteElo "1300"]
[PlyCount "28"]
[EventDate "2023.03.17"]
[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. d4 e6 2. Bf4 Bb4+ 3. Bd2 Bxd2+ 4. Qxd2 Nc6 5. e3 e5 6. dxe5 Nxe5 7. Qd4 d6 8. f4 Ng6 9. Qxg7 N8e7 10. Nf3 Nf5 11. Ng5 Nxg7 12. Nc3 Nf5 13. Ke2 h6 14. Nf3 Ngh4 0-1

[Event "COL-ch U12"]
[Site "Choconta"]
[Date "2023.03.19"]
[Round "5"]
[White "Diaz Navarro, Juan Pablo"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "C57"]
[BlackElo "1300"]
[PlyCount "57"]
[EventDate "2023.03.17"]
[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 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. Ng5 d5 5. Bb5 Bc5 6. 0-0 Bg4 7. Be2 Bxe2 8. Qxe2 Nd4 9. Qd1 c6 10. Nc3 Qb6 11. d3 0-0 12. Be3 Nxc2 13. Qxc2 Bxe3 14. Nd1 Bxg5 15. Re1 Bh4 16. Re3 Ng4 17. Rf3 c5 18. g3 Qg6 19. Qxc5 dxe4 20. dxe4 h6 21. gxh4 Ne3+ 22. Rg3 Rac8 23. Qxe3 Qh5 24. Qf3 Qxh4 25. Qg4 Qf6 26. Ne3 Qd6 27. Nf5 g6 28. Nxh6+ Kg7 29. Nxf7 1-0

[Event "COL-ch U12"]
[Site "Choconta"]
[Date "2023.03.19"]
[Round "4"]
[White "Duarte Guiza, Fredy Samuel"]
[Black "Casas Mejia, Santiago"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "1139"]
[BlackElo "1300"]
[PlyCount "46"]
[EventDate "2023.03.17"]
[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 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Ba4 Ng4 9. d3 Qd4 10. Qe2 Qxa4 11. f3 Be7 12. fxg4 Qxg4 13. Qxg4 Bxg4 14. 0-0 Bxg5 15. Bxg5 0-0 16. Bd2 Nb7 17. Bb4 c5 18. Ba3 Rfc8 19. Nc3 Nd6 20. Rfe1 c4 21. Bxd6 Rd8 22. Bxe5 cxd3 23. cxd3 Rxd3 1-0

[Event "Teusaquillo Rapid op"]
[Site "Teusaquillo"]
[Date "2023.03.04"]
[Round "2"]
[White "Casas Mejia, Santiago"]
[Black "Mesa Baez, Samuel"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1300"]
[BlackElo "1897"]
[PlyCount "92"]
[EventDate "2023.03.04"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. Bf4 d6 6. Qd2 c6 7. e4 Nfd7 8. Bh6 e5 9. Bxg7 Kxg7 10. dxe5 dxe5 11. Be2 Na6 12. a3 Nac5 13. 0-0-0 Nb3+ 14. Kb1 Nxd2+ 15. Rxd2 Qe7 16. Rhd1 a5 17. h3 Nc5 18. Nh2 Nb3 19. Rd3 Be6 20. Ng4 Bxc4 21. Rd7 Qe6 22. R1d6 Qxd6 23. Rxd6 Bxe2 24. Nxe2 f6 25. Rd7+ Rf7 26. Rd3 Nc5 27. Rc3 Nxe4 28. Rc4 Nd2+ 29. Ka1 Nxc4 30. f4 e4 31. Nf2 f5 32. g4 a4 33. gxf5 gxf5 34. Nd4 Rd8 35. Ne6+ Kf6 36. Nxd8 Rd7 37. Nxb7 Rxb7 38. h4 Na5 39. b4 axb3 40. Nd1 Rd7 41. Nc3 Nc4 42. Kb1 Rd3 43. Ne2 Rd1+ 44. Nc1 b2 45. Ka2 bxc1Q 46. a4 Qb2# 0-1

