[Event "COL-ch School U11"]
[Site "Neiva"]
[Date "2010.03.20"]
[Round "8.1"]
[White "Cardozo Osorio, Duban Estiben"]
[Black "Arismendi Polanco, Efrain Steven"]
[Result "0-1"]
[ECO "B50"]
[PlyCount "28"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[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. Nc3 Nf6 4. Be2 g6 5. 0-0 Bg7 6. d3 0-0 7. Bg5 Nc6 8. Qd2 Be6 9. d4 cxd4 10. Nxd4 Qb6 11. Nxe6 fxe6 12. Bc4 Nd8 13. Na4 Qc7 14. b4 Qxc4 0-1

[Event "COL-ch School U11"]
[Site "Neiva"]
[Date "2010.03.20"]
[Round "7.1"]
[White "Cardozo Osorio, Duban Estiben"]
[Black "Morantes Maldonado, Hans Mateo"]
[Result "0-1"]
[ECO "B50"]
[BlackElo "1970"]
[PlyCount "42"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nf3 Nf6 4. e5 dxe5 5. Nxe5 Nbd7 6. Bb5 a6 7. Nxd7 Bxd7 8. Bc4 b5 9. Be2 e5 10. d3 Be7 11. f4 Bd6 12. g3 0-0 13. Rf1 b4 14. Ne4 Bc6 15. Bf3 Nxe4 16. dxe4 Qc7 17. Bg2 Rad8 18. f5 Bb5 19. Rf2 Be7 20. Qf3 Rd4 21. Be3 Rd6 0-1

[Event "COL-ch School U11"]
[Site "Neiva"]
[Date "2010.03.19"]
[Round "5.1"]
[White "Cuevas Sanchez, Bramdon Daniel"]
[Black "Cardozo Osorio, Duban Estiben"]
[Result "1-0"]
[ECO "C46"]
[PlyCount "39"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[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 Bd6 4. Bc4 Nf6 5. d3 0-0 6. 0-0 Bc5 7. Bg5 d6 8. h3 Bd7 9. Nd5 h6 10. Bh4 Ne7 11. Nxf6+ Kh8 12. Qe2 Ng6 13. Nh7 Nf4 14. Qd2 Qe8 15. Nxf8 Qxf8 16. Bg3 b5 17. Bb3 d5 18. exd5 b4 19. Nxe5 Bf5 20. Bxf4 1-0

[Event "COL-ch School U11"]
[Site "Neiva"]
[Date "2010.03.19"]
[Round "6.1"]
[White "Marin Pinzon, Manuel de Jesus"]
[Black "Cardozo Osorio, Duban Estiben"]
[Result "0-1"]
[ECO "A07"]
[PlyCount "75"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. g3 d5 2. Nf3 Nc6 3. Bg2 Nf6 4. Nc3 Bg4 5. h3 Bh5 6. g4 Bg6 7. d4 e6 8. 0-0 Be7 9. Bf4 e5 10. Be3 e4 11. Ne5 Nxe5 12. dxe5 Nd7 13. h4 h6 14. h5 Bh7 15. Qxd5 c6 16. Qc4 Nxe5 17. Rfd1 Qc7 18. Bf4 f6 19. Bxe5 Qxe5 20. Bxe4 Bd6 21. Qd4 Qh2+ 22. Kf1 0-0-0 23. b4 Qh3+ 24. Bg2 Qh2 25. f3 Bg3 26. Qg1 Qh4 27. Qh1 Bh2 28. Rac1 Rxd1+ 29. Rxd1 Bxc2 30. Rd2 Bh7 31. b5 cxb5 32. Nxb5 Kb8 33. e4 a6 34. Nd4 Rc8 35. Rc2 Rd8 36. Ne6 Rd1+ 37. Ke2 Rxh1 38. Bxh1 0-1

[Event "COL-ch School U11"]
[Site "Neiva"]
[Date "2010.03.18"]
[Round "4.1"]
[White "Cardozo Osorio, Duban Estiben"]
[Black "Munoz, Juan David"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "22"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[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 Nf6 5. Nc3 a6 6. Bg5 Be7 7. Qd2 h6 8. Bh4 b5 9. 0-0-0 d5 10. exd5 exd5 11. Nxd5 Qxd5 0-1

[Event "COL-ch School U11"]
[Site "Neiva"]
[Date "2010.03.18"]
[Round "3.1"]
[White "Ororzco Hoyos, Jhon Bayron"]
[Black "Cardozo Osorio, Duban Estiben"]
[Result "0-1"]
[ECO "C20"]
[PlyCount "28"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Ne2 Nc6 3. Nbc3 d6 4. Ng1 Be6 5. Bd3 Qd7 6. Nge2 0-0-0 7. 0-0 Be7 8. Ng3 Nf6 9. Qe2 Bg4 10. f3 Nb4 11. Qd1 Be6 12. Be2 d5 13. d3 dxe4 14. dxe4 Qd4+ 0-1

[Event "COL-ch School U11"]
[Site "Neiva"]
[Date "2010.03.17"]
[Round "2.1"]
[White "Cardozo Osorio, Duban Estiben"]
[Black "Moreno Negrete, Emmanuel"]
[Result "0-1"]
[ECO "C41"]
[PlyCount "51"]
[EventDate "2010.03.17"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Nc3 Nf6 4. Bc4 Be7 5. 0-0 0-0 6. Re1 Re8 7. d3 c6 8. Be3 Bf8 9. Qe2 d5 10. Bb3 d4 11. Bxd4 exd4 12. Na4 b5 13. Nc5 Bxc5 14. e5 Bg4 15. Qd1 Nd5 16. h3 Bh5 17. c4 bxc4 18. dxc4 Nf4 19. Ba4 Bxf3 20. Qxf3 Ne6 21. Bxc6 Nxc6 22. Qxc6 Rc8 23. Qe4 Qb6 24. Rab1 d3 25. Rf1 d2 26. b3 0-1

