[Event "ARG-ch U18"]
[Site "Ibague"]
[Date "2024.03.17"]
[Round "7"]
[White "Obando Alzate, Mathias"]
[Black "Galeano Reyes, Juan Esteban"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1400"]
[BlackElo "1555"]
[PlyCount "88"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. d4 d5 5. exd5 exd5 6. Be2 Nf6 7. c4 dxc4 8. Bxc4 Nxd4 9. Nxd4 Qxd4 10. Qe2+ Qe4 11. 0-0 Qxe2 12. Bxe2 Bd6 13. Nc3 a6 14. Re1 0-0 15. Be3 b5 16. Rad1 Be7 17. Bf3 Ra7 18. b4 Rc7 19. bxc5 Bxc5 20. Bxc5 Rxc5 21. Ne4 Nxe4 22. Rxe4 Be6 23. a4 Rfc8 24. Red4 g6 25. a5 Rc4 26. Rd6 Rc1 27. h3 Rxd1+ 28. Rxd1 Rc4 29. Rd6 Kg7 30. Bd1 Rc1 31. Kh2 Ra1 32. Rb6 Rxa5 33. Rc6 Bc4 34. h4 Ra1 35. Bc2 Ra2 36. Be4 Rxf2 37. Rb6 a5 38. Bc6 Rb2 39. Kg3 a4 40. Kf3 a3 41. Ke3 b4 42. Kd4 Be6 43. Kd3 a2 44. Ra6 Rb1 0-1

[Event "ARG-ch U18"]
[Site "Ibague"]
[Date "2024.03.17"]
[Round "6"]
[White "Obando Alzate, Mathias"]
[Black "Ortiz, Jonathan David"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1400"]
[PlyCount "23"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 0-0 6. Bg5 Nd4 7. Nd5 c6 8. Nxf6+ gxf6 9. Bh6 Re8 10. Nxd4 Bxd4 11. Qg4+ Kh8 12. Qg7# 1-0

[Event "ARG-ch U18"]
[Site "Ibague"]
[Date "2024.03.16"]
[Round "5"]
[White "Cuellar Sanchez, Matias"]
[Black "Obando Alzate, Mathias"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "1570"]
[BlackElo "1400"]
[PlyCount "33"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 a6 7. Bxc6+ bxc6 8. exf6 Qxf6 9. Qe2+ Be6 10. 0-0 Bd6 11. Re1 0-0 12. c3 d3 13. Qxd3 Bf5 14. Qd4 Qg6 15. Bf4 Rad8 16. Bxd6 Rxd6 17. Nh4 1-0

[Event "ARG-ch U18"]
[Site "Ibague"]
[Date "2024.03.16"]
[Round "4"]
[White "Obando Alzate, Mathias"]
[Black "Carvajal, Juan Andres"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1400"]
[PlyCount "93"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. Nc3 Nf6 5. d3 Bb4 6. Bd2 d6 7. a3 Bxc3 8. bxc3 0-0 9. h3 Be6 10. Bb3 d5 11. exd5 Bxd5 12. 0-0 Bxb3 13. cxb3 Qxd3 14. Re1 e4 15. Re3 Qd5 16. c4 Qd6 17. Ne1 Rad8 18. Ra2 Rfe8 19. b4 Qe6 20. Qc1 a6 21. f3 Qd6 22. Qc3 Qd4 23. Qxd4 Rxd4 24. c5 exf3 25. Rxe8+ Nxe8 26. Nxf3 Rd7 27. Bc3 b6 28. Re2 Nf6 29. cxb6 cxb6 30. Bxf6 gxf6 31. Re8+ Kg7 32. Ra8 a5 33. b5 Nd4 34. Ne1 Nxb5 35. a4 Nc3 36. Nf3 Nxa4 37. Nh4 Rd5 38. g4 Rg5 39. Nf5+ Kh7 40. h4 Rxg4+ 41. Kh2 Rf4 42. Nd6 Rxh4+ 43. Kg3 Rh5 44. Nxf7 Kg6 45. Ra7 b5 46. Kf4 b4 47. Nh8# 1-0

[Event "ARG-ch U18"]
[Site "Ibague"]
[Date "2024.03.15"]
[Round "3"]
[White "Moreno Palacios, Alejandro"]
[Black "Obando Alzate, Mathias"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "1572"]
[BlackElo "1400"]
[PlyCount "73"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 d6 5. dxe5 dxe5 6. Qxd8+ Nxd8 7. Nxe5 Nxe4 8. 0-0 Bc5 9. Be3 Bb6 10. Bxb6 axb6 11. Re1 Bf5 12. g4 Nd6 13. gxf5 Nxf5 14. Nxf7+ Kf8 15. Nxh8 Nd4 16. Na3 Nf3+ 17. Kf1 Nxe1 18. Rxe1 Nc6 19. Nb5 Nb4 20. Nxc7 Rc8 21. Ne6+ Kg8 22. Nd8+ Kf8 23. Ne6+ Kg8 24. Bb3 Kxh8 25. Nc7 Rf8 26. Re8 Rxe8 27. Nxe8 Nc6 28. Nd6 Nd8 29. Bd5 h6 30. Nxb7 Nxb7 31. Bxb7 Kh7 32. b4 g5 33. a4 h5 34. a5 h4 35. a6 Kh6 36. a7 Kh5 37. a8Q 1-0

[Event "ARG-ch U18"]
[Site "Ibague"]
[Date "2024.03.15"]
[Round "2"]
[White "Obando Alzate, Mathias"]
[Black "Contreras Gonzalez, Cristian David"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "1400"]
[BlackElo "1558"]
[PlyCount "56"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 d4 4. exf6 dxc3 5. bxc3 gxf6 6. Bc4 Nc6 7. d3 h5 8. Nf3 e5 9. d4 Bg7 10. d5 Na5 11. Bb3 Bf5 12. 0-0 Qd6 13. Be3 b6 14. Qe2 0-0-0 15. Rab1 Bg4 16. Ba4 e4 17. Qa6+ Kb8 18. Nd4 Qxd5 19. Rb5 Bc8 20. Qxa5 Qb7 21. Qb4 c5 22. Qc4 cxd4 23. cxd4 Be6 24. Qb4 h4 25. Bf4+ Ka8 26. c3 h3 27. g3 e3 28. Bxe3 Qg2# 0-1

[Event "ARG-ch U18"]
[Site "Ibague"]
[Date "2024.03.14"]
[Round "1"]
[White "Guzman Galeano, Erick Samir"]
[Black "Obando Alzate, Mathias"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1756"]
[BlackElo "1400"]
[PlyCount "51"]
[EventDate "2024.03.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CB12_2024"]
[SourceDate "2023.10.01"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Bc5 5. d3 h6 6. Be3 Bb6 7. Qd2 d6 8. h3 Be6 9. 0-0-0 Qd7 10. Rhe1 0-0-0 11. Bxb6 axb6 12. Bb5 Qe8 13. d4 exd4 14. Nxd4 Bd7 15. Nb3 Nb8 16. a4 Bc6 17. Nd4 Nfd7 18. Nd5 Nc5 19. b4 Nxe4 20. Qf4 Qe5 21. Qxe5 dxe5 22. Ne7+ Kd7 23. Ndxc6+ Ke6 24. Nxd8+ Kxe7 25. Rxe4 f6 26. Nxb7 1-0

[Event "Pereira op"]
[Site "Pereira"]
[Date "2023.09.24"]
[Round "4"]
[White "Moreno Palacios, Alejandro"]
[Black "Obando Alzate, Mathias"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1339"]
[BlackElo "1451"]
[PlyCount "46"]
[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 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Be7 7. e5 Bb4+ 8. Nc3 Qe7 9. 0-0 Ng8 10. a3 Bxc3 11. bxc3 d6 12. exd6 Qxd6 13. Ng5 Nd8 14. Qb3 Qe7 15. Bd2 Qf6 16. Rfe1+ Ne7 17. Qb4 Be6 18. Nxe6 Nxe6 19. d5 a5 20. Qb5+ c6 21. Qxb7 Rd8 22. dxc6 Rxd2 23. c7 0-0 1-0

[Event "Pereira op"]
[Site "Pereira"]
[Date "2023.09.24"]
[Round "6"]
[White "Obando Alzate, Mathias"]
[Black "Huertas Cabrera, Daniel"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1451"]
[BlackElo "1367"]
[PlyCount "60"]
[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. d3 dxe4 4. Nfd2 exd3 5. Bxd3 Nf6 6. 0-0 Be7 7. Nc3 0-0 8. Nf3 Nc6 9. Bf4 Re8 10. Qd2 Bd6 11. Rfe1 e5 12. Bg5 Be6 13. Ne4 Nxe4 14. Bxe4 Qd7 15. Qd3 f5 16. Bxc6 Qxc6 17. Nxe5 Bxe5 18. Rxe5 Bxa2 19. Rxf5 Qe4 20. Rf8+ Kxf8 21. Qa3+ c5 22. Be3 Bf7 23. Re1 Qxc2 24. Bxc5+ Kg8 25. Qa1 Rxe1+ 26. Qxe1 Qxc5 27. h3 Re8 28. Qf1 Qb4 29. Kh2 Re1 30. Qh1 Qf4+ 0-1

[Event "Pereira op"]
[Site "Pereira"]
[Date "2023.09.24"]
[Round "5"]
[White "Obando Alzate, Mathias"]
[Black "Munera Garcia, Lina Marcela"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1451"]
[BlackElo "1095"]
[PlyCount "50"]
[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 g6 3. Bc4 Bg7 4. Nc3 Nc6 5. d3 a6 6. Bf4 e5 7. Bg3 b5 8. Bd5 Nge7 9. 0-0 Bb7 10. Ng5 Nxd5 11. exd5 Qxg5 12. dxc6 Bxc6 13. Qe2 d6 14. Ne4 Qd8 15. c3 0-0 16. d4 exd4 17. cxd4 Re8 18. f3 d5 19. Qd3 dxe4 20. fxe4 Bxd4+ 21. Kh1 Bxe4 22. Qd2 Qd5 23. Rae1 Qc6 24. Rf4 b4 25. Qe2 Bd5 0-1

[Event "Pereira op"]
[Site "Pereira"]
[Date "2023.09.23"]
[Round "2"]
[White "Obando Alzate, Mathias"]
[Black "Chica Londono, Daniel"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "1451"]
[BlackElo "1358"]
[PlyCount "46"]
[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 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nc3 Bg4 6. Bc4 e6 7. d3 Be7 8. Bf4 0-0 9. Qd2 Nbd7 10. 0-0-0 Nb6 11. Qe3 Nbd5 12. Bxd5 Nxd5 13. Qd4 Bf6 14. Be5 Bxe5 15. Qxe5 Nxc3 16. Qxc3 Bxf3 17. gxf3 Qd5 18. Rhg1 g6 19. Rg3 Qxa2 20. Qb4 b5 21. Qe4 Qd5 22. Qb4 Rfd8 23. Rh3 h5 0-1

[Event "Pereira op"]
[Site "Pereira"]
[Date "2023.09.23"]
[Round "1"]
[White "Quevedo Bonilla, Paula Thaliana"]
[Black "Obando Alzate, Mathias"]
[Result "1-0"]
[ECO "C66"]
[WhiteElo "1512"]
[BlackElo "1451"]
[PlyCount "49"]
[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 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. 0-0 Nf6 6. Nc3 a6 7. Bxc6 Bxc6 8. dxe5 dxe5 9. Nxe5 Nxe4 10. Qxd8+ Rxd8 11. Nxc6 Nd2 12. Re1+ Be7 13. Nxd8 Kxd8 14. Bxd2 Bb4 15. Rad1 Kc8 16. Ne4 Be7 17. Ng5 Re8 18. Bb4 Kb8 19. Rxe7 Rc8 20. Nxf7 c5 21. Rdd7 Rc6 22. Rxb7+ Ka8 23. Rbd7 cxb4 24. Rd8+ Rc8 25. Rxc8# 1-0

[Event "Pereira op"]
[Site "Pereira"]
[Date "2023.09.23"]
[Round "3"]
[White "Villada Londono, Thomas"]
[Black "Obando Alzate, Mathias"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1234"]
[BlackElo "1451"]
[PlyCount "37"]
[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 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 d6 5. dxe5 dxe5 6. Qxd8+ Nxd8 7. Nxe5 Bd6 8. Nf3 Bc5 9. Bc4 Be6 10. Bb3 Nc6 11. Nb5 0-0 12. Bxe6 fxe6 13. Nxc7 Rac8 14. Nxe6 Rce8 15. Nxc5 Nxe4 16. Nxe4 Rxe4+ 17. Be3 Nb4 18. 0-0 Nxc2 19. Rac1 1-0

