[Event "COL-ch U16"]
[Site "Cali"]
[Date "2008.04.06"]
[Round "6"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Valencia, Adrian David"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "1763"]
[BlackElo "1971"]
[PlyCount "74"]
[EventDate "2008.04.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c4 c6 4. Nc3 f5 5. Bg5 Be7 6. Bxe7 Qxe7 7. cxd5 exd5 8. g3 Nf6 9. Bg2 0-0 10. 0-0 Ne4 11. e3 Be6 12. Ne5 Nd7 13. f4 Ndf6 14. Nxe4 Nxe4 15. Bf3 g6 16. Qe2 Qb4 17. Rad1 Qa4 18. a3 Nd6 19. g4 Kg7 20. Kh1 Qb3 21. Rg1 fxg4 22. Bxg4 Bf5 23. Bxf5 Nxf5 24. Rd3 Qb5 25. Qg4 Rf6 26. h4 Nh6 27. Qg3 Nf7 28. h5 Nxe5 29. fxe5 Qxd3 30. exf6+ Kxf6 31. Qe5+ Kf7 32. Qc7+ Kg8 33. h6 Qe4+ 34. Rg2 Qh4+ 35. Rh2 Qe1+ 36. Kg2 Qe2+ 37. Kh1 Qf1# 0-1

[Event "COL-ch U16"]
[Site "Cali"]
[Date "2008.04.06"]
[Round "7"]
[White "Toro Henao, Juan Sebastian"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "0-1"]
[ECO "E90"]
[BlackElo "1763"]
[PlyCount "64"]
[EventDate "2008.04.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be3 e5 7. d5 Nbd7 8. Qd2 a6 9. Be2 Nh5 10. 0-0 f5 11. exf5 gxf5 12. Bh6 f4 13. Bxg7 Nxg7 14. Bd3 Nc5 15. Bc2 Bf5 16. b4 Nd7 17. Ne4 Kh8 18. Qc3 Nf6 19. Nfd2 Qe8 20. Rfe1 Qg6 21. Qf3 Rg8 22. g3 Raf8 23. Qg2 Qh6 24. Nxf6 Rxf6 25. Ne4 Rg6 26. Qf3 Nh5 27. Nxd6 cxd6 28. Bxf5 Rg5 29. Qe4 fxg3 30. fxg3 Nxg3 31. hxg3 Rxg3+ 32. Kf1 Qh2 0-1

[Event "COL-ch U16"]
[Site "Cali"]
[Date "2008.04.05"]
[Round "4"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Suarez, Alexander"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "1763"]
[PlyCount "95"]
[EventDate "2008.04.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nd7 3. c4 e5 4. Nc3 f5 5. Bg5 Be7 6. Bxe7 Nxe7 7. dxe5 dxe5 8. e4 0-0 9. exf5 Nxf5 10. Qd5+ Kh8 11. 0-0-0 c6 12. Qe4 Qf6 13. Bd3 Qh6+ 14. Kb1 Nd6 15. Qe2 Nc5 16. Bc2 e4 17. Ne5 Qe6 18. Qh5 Rf5 19. Rxd6 Qxd6 20. Nf7+ Rxf7 21. Qxf7 Be6 22. Qh5 Bxc4 23. Rd1 Qe7 24. Re1 Bf7 25. Qg4 Re8 26. b4 Nd3 27. Rxe4 Ne5 28. Qh3 Bg6 29. Rh4 Bxc2+ 30. Kxc2 h6 31. Re4 Qf7 32. Qe3 Qg6 33. Kc1 Qd6 34. Kb1 Re7 35. Qf4 Qd3+ 36. Kb2 Ng6 37. Qb8+ Kh7 38. Rxe7 Nxe7 39. Qxb7 Nd5 40. Qxc6 Nxb4 41. Qe4+ Qxe4 42. Nxe4 Kg6 43. Kb3 Nd3 44. Kc4 Ne5+ 45. Kd4 Nc6+ 46. Kc5 Ne5 47. a4 Kf5 48. Kd5 1-0

[Event "COL-ch U16"]
[Site "Cali"]
[Date "2008.04.05"]
[Round "5"]
[White "Rios, Cristhian Camilo"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "1-0"]
[ECO "B46"]
[WhiteElo "2088"]
[BlackElo "1763"]
[PlyCount "29"]
[EventDate "2008.04.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nc6 6. Nxc6 bxc6 7. Bd3 Nf6 8. 0-0 Qc7 9. Qe2 Bd6 10. h3 0-0 11. Bg5 Be5 12. f4 Bd4+ 13. Kh1 d6 14. e5 Nd5 15. Qe4 1-0

[Event "COL-ch U16"]
[Site "Cali"]
[Date "2008.04.04"]
[Round "3"]
[White "Movil Brito, Jaime Alfreo"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "0-1"]
[ECO "B46"]
[BlackElo "1763"]
[PlyCount "25"]
[EventDate "2008.04.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. 0-0 Nc6 8. Nxc6 bxc6 9. Kh1 d5 10. f4 Be7 11. e5 Nd7 12. Qg4 g6 13. Rf3 0-1

[Event "COL-ch U16"]
[Site "Cali"]
[Date "2008.04.04"]
[Round "2"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Jimenez, Daniel Fernando"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "1763"]
[BlackElo "2055"]
[PlyCount "118"]
[EventDate "2008.04.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. d5 d6 5. Nc3 Be7 6. e4 Nbd7 7. Bd3 0-0 8. 0-0 Re8 9. Re1 Nf8 10. h3 Ng6 11. Be3 Nd7 12. a3 Bf6 13. Qc2 b6 14. Rab1 Ba6 15. Qa4 Bb7 16. Nb5 Nde5 17. Nxe5 Nxe5 18. Be2 Qe7 19. Nc3 a6 20. Qc2 Rec8 21. Qd2 h6 22. f4 Ng6 23. dxe6 fxe6 24. Bd3 Qf7 25. Rf1 Rd8 26. Qc2 Nf8 27. e5 Be7 28. Na4 Rab8 29. Nxb6 Bxg2 30. Qxg2 Rxb6 31. f5 dxe5 32. Bxh6 Qf6 33. Be4 Qxh6 34. fxe6 Kh8 35. Rf7 Rxe6 36. Rbf1 Bf6 37. Bd5 Ree8 38. R1xf6 gxf6 39. Rxf6 Qg7 40. Rh6+ Nh7 41. Rg6 Qf8 42. h4 Qf4 43. h5 Qd4+ 44. Kh1 Qd1+ 45. Kh2 Qxh5+ 46. Kg1 Qxg6 47. Qxg6 Rg8 48. Bxg8 Rxg8 49. Qxg8+ Kxg8 50. b4 cxb4 51. axb4 Kf7 52. Kf2 Ke6 53. Ke3 Nf6 54. Kd3 Kd6 55. Kc3 Kc6 56. Kb3 Kb6 57. Kc3 a5 58. Kb3 axb4 59. Kxb4 Ne4 0-1

[Event "COL-ch U18"]
[Site "Bogota"]
[Date "2008.01.27"]
[Round "6"]
[White "Castillo, Ricardo"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "0-1"]
[ECO "B43"]
[BlackElo "1763"]
[PlyCount "102"]
[EventDate "2008.01.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Bb4 7. Bd2 Nc6 8. Nxc6 bxc6 9. Qg4 Bf8 10. 0-0 Nf6 11. Qe2 Bc5 12. e5 Nd5 13. Nxd5 cxd5 14. Bf4 Bf8 15. Rac1 g6 16. c4 d4 17. Rfd1 Rb8 18. h4 Bg7 19. Re1 0-0 20. h5 Re8 21. b3 a5 22. Qg4 a4 23. hxg6 hxg6 24. Rb1 Qc5 25. Kh2 axb3 26. axb3 Qa3 27. Rh1 Rxb3 28. Bxg6 fxg6 29. Qxg6 Re7 30. Rxb3 Qxb3 31. Bh6 Qa3 32. Kg1 Qa1+ 33. Kh2 Qa3 34. Kg1 Rf7 35. Rh3 Qf8 36. Bg5 Qb4 37. Bf6 Rxf6 38. Qh7+ Kf8 39. exf6 Qe1+ 40. Kh2 Qe5+ 41. Rg3 Bxf6 42. Qg8+ Ke7 43. Qxc8 Bh4 44. Qg8 Bxg3+ 45. Qxg3 Qxg3+ 46. Kxg3 Kd6 47. Kf3 Kc5 48. g4 Kxc4 49. Ke2 e5 50. f3 Kd5 51. Kd3 Ke6 0-1

[Event "COL-ch U18"]
[Site "Bogota"]
[Date "2008.01.27"]
[Round "7"]
[White "Rivera Trujillo, Edgar Fabian"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "0-1"]
[ECO "E99"]
[BlackElo "1763"]
[PlyCount "34"]
[EventDate "2008.01.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. Bd2 Nf6 12. f3 f4 13. c5 g5 14. cxd6 cxd6 15. Rc1 a6 16. Nf2 h5 17. h3 Ng6 0-1

[Event "COL-ch U18"]
[Site "Bogota"]
[Date "2008.01.26"]
[Round "4"]
[White "Celis Guzman, Julian Fernando"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "1/2-1/2"]
[ECO "B40"]
[BlackElo "1763"]
[PlyCount "126"]
[EventDate "2008.01.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 Nf6 5. Bg2 Be7 6. 0-0 0-0 7. Nbd2 a6 8. Re1 d6 9. Nh4 d5 10. f4 dxe4 11. dxe4 Qc7 12. c3 e5 13. f5 Rd8 14. Qe2 b5 15. Ndf3 Bb7 16. Bg5 Rd7 17. Rad1 Rad8 18. Rxd7 Rxd7 19. Qe3 Na5 20. Bxf6 Bxf6 21. b3 c4 22. b4 Nc6 23. Bf1 Qd8 24. Qf2 Rd1 25. Rxd1 Qxd1 26. Qd2 Qxd2 27. Nxd2 Bxh4 28. gxh4 Kf8 29. Bg2 Ke7 30. h5 Kf6 31. h4 Ne7 32. Kf2 Nc8 33. Bf3 Nb6 34. Bd1 g6 35. hxg6 hxg6 36. fxg6 Kxg6 37. Ke3 Nd7 38. Nf3 f6 39. h5+ Kh6 40. Nh4 Nf8 41. Nf5+ Kg5 42. Nd6 Bc6 43. Nf7+ Kh4 44. h6 Nh7 45. Bf3 Nf8 46. Bd1 Be8 47. Nd6 Bg6 48. Nf5+ Kg5 49. Bf3 Ne6 50. Ne7 Bh7 51. Nd5 Bg6 52. Ne7 Bh7 53. Nd5 Nf4 54. Nc7 Kxh6 55. Nxa6 Ne6 56. Nc5 Nxc5 57. bxc5 Kg5 58. c6 Bg8 59. c7 Be6 60. Bd1 Bc8 61. a4 bxa4 62. Bxa4 f5 63. exf5 Kxf5 1/2-1/2

[Event "COL-ch U18"]
[Site "Bogota"]
[Date "2008.01.26"]
[Round "5"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Bojaca Cruz, Carlos Andres"]
[Result "0-1"]
[ECO "D52"]
[WhiteElo "1763"]
[BlackElo "1900"]
[PlyCount "97"]
[EventDate "2008.01.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. Bg5 Nbd7 6. e3 Bd6 7. Bd3 h6 8. Bxf6 Nxf6 9. 0-0 0-0 10. Qc2 Re8 11. Rac1 dxc4 12. Bxc4 e5 13. dxe5 Bxe5 14. Nxe5 Rxe5 15. Rfd1 Qe7 16. h3 Bf5 17. Bd3 Be6 18. Rd2 Bd5 19. Rcd1 Re8 20. Bf1 Rg5 21. Nxd5 Rxd5 22. Rxd5 Nxd5 23. Bc4 Nf6 24. Qd2 Qe5 25. b4 Qe4 26. Bd3 Qe5 27. a4 b6 28. Rc1 Kh8 29. Be2 c5 30. bxc5 bxc5 31. Qa5 Qb2 32. Qe1 Qb4 33. Qxb4 cxb4 34. a5 Rb8 35. Rb1 Nd5 36. Rb2 Nc3 37. Bc4 Kg8 38. Kh2 Kf8 39. Kg3 f6 40. Kf4 g6 41. g4 Ke7 42. h4 Na4 43. Rb1 Nc5 44. h5 gxh5 45. gxh5 b3 46. Rb2 Rb4 47. Kf5 Rxc4 48. Kg6 Rc2 49. Rb1 0-1

[Event "COL-ch U18"]
[Site "Bogota"]
[Date "2008.01.25"]
[Round "2"]
[White "Almanza, Rafael Andres"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2046"]
[BlackElo "1763"]
[PlyCount "97"]
[EventDate "2008.01.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. 0-0 Nc6 7. Nxc6 bxc6 8. Nd2 Qc7 9. Qe2 Bb7 10. c4 e5 11. f4 Bc5+ 12. Kh1 d6 13. Nf3 0-0 14. Nh4 Rfe8 15. Nf5 Bc8 16. fxe5 Rxe5 17. Bf4 Bxf5 18. Bxe5 Bg4 19. Qe1 dxe5 20. Rxf6 gxf6 21. Qg3 Qd7 22. Be2 h5 23. h3 Qd2 24. Bxg4 hxg4 25. Qxg4+ Qg5 26. Qd7 Kh8 27. Rf1 Rg8 28. g4 Qh4 29. Kg2 Be3 30. b3 Kg7 31. Qd3 Qg5 32. Rf5 Qh6 33. Rh5 Qf4 34. Rf5 Qh6 35. Rh5 Qg6 36. Qxe3 Rd8 37. Qe2 Rd4 38. Kf3 c5 39. h4 Kg8 40. Qe3 Kg7 41. Rf5 Rd1 42. h5 Qh7 43. Ke2 Rh1 44. Rf1 Rh4 45. Rg1 Rh2+ 46. Kd3 Qh8 47. Qxc5 Qd8+ 48. Qd5 Qa5 49. Qxa5 1-0

[Event "COL-ch U18"]
[Site "Bogota"]
[Date "2008.01.24"]
[Round "1"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Ayala, Mateo"]
[Result "1-0"]
[ECO "D43"]
[WhiteElo "1763"]
[BlackElo "2097"]
[PlyCount "77"]
[EventDate "2008.01.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 e6 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 a6 8. Rc1 dxc4 9. Bxc4 Nd7 10. 0-0 b5 11. Be2 Bb7 12. Qc2 Bb4 13. Rfd1 0-0 14. Ne1 Rac8 15. Bf3 e5 16. Ne4 Qe6 17. Nd3 Be7 18. dxe5 Nxe5 19. Nxe5 Qxe5 20. Rd7 Rc7 21. Rxc7 Qxc7 22. Nc5 Bxc5 23. Qxc5 Rc8 24. h3 Qa5 25. Qe7 Qc7 26. Qc5 Qa5 27. Bg4 Rd8 28. Qe7 Qb6 29. Bh5 Rf8 30. Rd1 Bc8 31. Rd6 Be6 32. Bf3 Bxa2 33. Rxc6 Qa5 34. Rc7 Qe1+ 35. Kh2 Qxf2 36. Be4 Qxb2 37. Ra7 Rb8 38. Rd7 Be6 39. Rd8+ 1-0

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.20"]
[Round "7"]
[White "Cardona, Juan Camilo"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "2028"]
[BlackElo "1763"]
[PlyCount "162"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Nf6 7. Bd3 Bb4 8. Bd2 0-0 9. a3 Bc5 10. Nb3 Ba7 11. a4 Nc6 12. 0-0 b6 13. Be3 Bb7 14. Qe2 Rfe8 15. h3 h6 16. f4 Nb4 17. Kh1 d5 18. e5 Nd7 19. Qd2 Nc6 20. Bf2 Nc5 21. Nxc5 bxc5 22. Be2 Rab8 23. b3 Ne7 24. Bf3 Nf5 25. g4 Ne7 26. Kh2 Ng6 27. Bg3 Rbc8 28. Ne2 c4 29. Rac1 Qb8 30. b4 Bc6 31. a5 Rcd8 32. Nd4 Bxd4 33. Qxd4 Qxb4 34. Be1 Qb8 35. Bd2 Qc7 36. Rb1 Bb5 37. Rfe1 Rb8 38. Bb4 Rb7 39. Rb2 Rc8 40. c3 Ne7 41. Ra1 Nc6 42. Qe3 Nd8 43. Bd6 Qd7 44. f5 Bc6 45. Rb6 exf5 46. gxf5 Qxf5 47. Bg4 Qc2+ 48. Kg3 Ra8 49. Rxb7 Nxb7 50. Bc7 Qg6 51. Kh2 h5 52. Bf3 Qc2+ 53. Bg2 d4 54. Qg1 Qxg2+ 55. Qxg2 Bxg2 56. Kxg2 Rc8 57. Bb6 d3 58. Kf3 Nd8 59. Ke4 Ne6 60. h4 Kh7 61. Rf1 Nc7 62. Bxc7 Rxc7 63. Kd4 Kg6 64. Kd5 Rc8 65. Kd4 Kh6 66. Rg1 Kh7 67. Kd5 Kg8 68. Rf1 d2 69. Rd1 Kf8 70. Kd4 Ke7 71. Kd5 g6 72. Kd4 Ke6 73. Ke4 Rd8 74. Kf4 Rd5 75. Ke4 Rxe5+ 76. Kd4 Rxa5 77. Kxc4 Rd5 78. Kb4 Ke5 79. Kc4 Ke4 80. Kb3 Ke3 81. Kb2 Ke2 0-1

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.20"]
[Round "6"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Mayorquin Polanco, Nicolas"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "1763"]
[PlyCount "45"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 c5 7. 0-0 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. a3 b6 11. b4 Qc7 12. Be3 Bb7 13. h3 Rad8 14. Bd3 Ba6 15. bxc5 bxc5 16. Qa4 Rd6 17. Rab1 Rb8 18. Rxb8+ Qxb8 19. Bxc5 Qb2 20. Ne2 Qd2 21. Rd1 Qb2 22. Bxd6 exd6 23. Qxa6 1-0

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.19"]
[Round "5"]
[White "Guelgua, Alvaro"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "1964"]
[BlackElo "1763"]
[PlyCount "33"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. 0-0 Nc6 7. Be3 Be7 8. f4 Qb6 9. c3 Nxd4 10. Bxd4 Qxb2 11. Nd2 b5 12. a3 Bb7 13. Rf2 Ng4 14. Re2 Ne3 15. Rxe3 Bc5 16. Bxc5 Qxc3 17. Rc1 1-0

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.19"]
[Round "4"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Escobar Barona, Juan Fernando"]
[Result "1/2-1/2"]
[ECO "D17"]
[WhiteElo "1763"]
[PlyCount "101"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. c4 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Nb6 8. e3 a5 9. Qb3 Nfd7 10. e4 Be6 11. d5 cxd5 12. Nxb6 Qxb6 13. Qxb6 Nxb6 14. Bb5+ Kd8 15. Be3 Nc4 16. Bxc4 dxc4 17. 0-0-0+ Ke8 18. Nb5 Rc8 19. Bb6 f6 20. f4 g6 21. Nc7+ Kf7 22. Nxe6 Kxe6 23. Rd5 Rc6 24. Bxa5 Bh6 25. g3 b6 26. Bb4 Ra8 27. a5 bxa5 28. Rxa5 Rxa5 29. Bxa5 Ra6 30. Be1 Ra1+ 31. Kc2 Kd7 32. Rg1 e5 33. Bf2 Rxg1 34. Bxg1 exf4 35. gxf4 Bxf4 36. Kc3 Be5+ 37. Kxc4 Bxb2 38. Kd5 Be5 39. h3 Ke7 40. Bf2 g5 41. Be3 h6 42. Kc4 Ke6 43. Kd3 f5 44. exf5+ Kxf5 45. Ke2 Bf4 46. Bc5 Ke4 47. Kf2 Be5 48. Bf8 h5 49. Bh6 Kf5 50. Kf3 Bd6 51. Bg7 1/2-1/2

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.18"]
[Round "3"]
[White "Escobar, Guido Jose"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "0-1"]
[ECO "B43"]
[BlackElo "1763"]
[PlyCount "70"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. 0-0 Nc6 8. Nf3 Be7 9. Ne2 0-0 10. a3 b5 11. Ng3 Bb7 12. Re1 d6 13. c3 Rac8 14. Qc2 Rfd8 15. Bg5 h6 16. Bxf6 Bxf6 17. Nh5 Be7 18. Rad1 Na5 19. Re3 d5 20. exd5 Rxd5 21. Bh7+ Kh8 22. Rxd5 Bxd5 23. Ne5 Bc5 24. Re2 Bb3 25. Qe4 f5 26. Bxf5 exf5 27. Qxf5 Kg8 28. Qg6 Rf8 29. Ng4 Kh8 30. Qxa6 Qd7 31. Re1 Qxg4 32. Rf1 Qxh5 33. Qxa5 Bxf2+ 34. Kh1 Qe2 35. Ra1 Be1 0-1

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.18"]
[Round "1"]
[White "Moran, Daniel Stiven"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "1-0"]
[ECO "E65"]
[WhiteElo "2125"]
[BlackElo "1763"]
[PlyCount "69"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. g3 d6 6. Bg2 a6 7. 0-0 c5 8. h3 Qc7 9. b3 d5 10. Nxd5 Nxd5 11. cxd5 cxd4 12. Nxd4 Qc3 13. Be3 Qa5 14. a3 Nd7 15. b4 Qd8 16. Rc1 Nb6 17. Qb3 Bd7 18. b5 axb5 19. Nxb5 Ra5 20. Nc3 Ra6 21. d6 Be6 22. Qb4 Qxd6 23. Bc5 Qd2 24. Nd5 Qxb4 25. Nxb4 Nc4 26. Nxa6 bxa6 27. Rfd1 Bf6 28. Bd5 Nb2 29. Rd2 Bxh3 30. Bd4 Bxd4 31. Rxd4 e6 32. Bc6 e5 33. Rb4 Rc8 34. Rxb2 Bd7 35. Rbc2 1-0

[Event "COL-ch U18"]
[Site "Cali"]
[Date "2008.01.18"]
[Round "2"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Arias, Miguel Antonio"]
[Result "1-0"]
[ECO "D53"]
[WhiteElo "1763"]
[PlyCount "45"]
[EventDate "2008.01.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Bg5 Be7 5. Nc3 b6 6. cxd5 Nxd5 7. Nxd5 exd5 8. Bxe7 Qxe7 9. e3 Bg4 10. Qc2 Bxf3 11. Bb5+ Kd8 12. gxf3 Qb4+ 13. Qc3 Qxb5 14. Rc1 c6 15. Rg1 Rg8 16. e4 Kd7 17. Rg5 Qc4 18. Qd2 Qxa2 19. Qf4 dxe4 20. d5 Qa5+ 21. Kf1 Qb4 22. Qxf7+ Qe7 23. dxc6+ 1-0

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.29"]
[Round "9"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Escobar, Guido Jose"]
[Result "1-0"]
[ECO "E12"]
[PlyCount "36"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb4 5. Bg5 Bb7 6. e3 Bxf3 7. Qxf3 d6 8. Bd3 Nbd7 9. 0-0 0-0 10. Rfe1 Qc8 11. Rac1 c5 12. h3 Rb8 13. e4 h6 14. Bf4 Ne8 15. Bb1 Ra8 16. Qd3 f5 17. exf5 exf5 18. Qd2 Rf6 1-0

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.28"]
[Round "7"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Carrasco, Yerko"]
[Result "0-1"]
[ECO "D56"]
[PlyCount "94"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nc6 3. c4 e6 4. Nc3 Nf6 5. Bg5 Be7 6. e3 h6 7. Bh4 0-0 8. a3 b6 9. Qc2 Bb7 10. Rc1 Re8 11. cxd5 exd5 12. Bb5 a6 13. Ba4 Rf8 14. Bxc6 Bxc6 15. Ne2 Bb5 16. Qxc7 Rc8 17. Qxd8 Rfxd8 18. Bxf6 Bxf6 19. Kd2 g5 20. h3 Kg7 21. Nc3 Be8 22. Rc2 Bd7 23. g4 Be6 24. Rhc1 h5 25. Nh2 hxg4 26. Nxg4 Bf5 27. Nxd5 Rxc2+ 28. Rxc2 Bxc2 29. Ndxf6 Bf5 30. b3 Bxg4 31. Nxg4 Rh8 32. Kc3 Rxh3 33. Kc4 Rh1 34. Ne5 Rc1+ 35. Kd5 Rc3 36. Nd7 Rxb3 37. a4 Rb4 38. Kc6 Rxa4 39. Kxb6 Ra2 40. f3 a5 41. Kb5 a4 42. Kb4 a3 43. d5 Rd2 44. Kxa3 Rxd5 45. Nb6 Rd3+ 46. Kb2 Rxe3 47. f4 gxf4 0-1

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.27"]
[Round "6"]
[White "Jimenez Alvarado, Humberto"]
[Black "Ossa Ochoa, Juan Sebastian"]
[Result "0-1"]
[ECO "E81"]
[PlyCount "32"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Qc2 Nbd7 7. Bd3 c6 8. d5 a5 9. Nge2 Nc5 10. Bg5 Bd7 11. 0-0 Qc8 12. Ng3 h6 13. Be3 Nxd3 14. Qxd3 Kh8 15. f4 Ng4 16. Bd2 e5 0-1

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.27"]
[Round "5"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Carrera Du Bois, Alhan Enhok"]
[Result "0-1"]
[ECO "A45"]
[PlyCount "35"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. dxc5 Qa5+ 4. Nc3 Qxc5 5. Bf4 Nc6 6. e3 d6 7. Be2 e5 8. Bg3 Be6 9. a3 a6 10. Qd3 0-0-0 11. b4 Qb6 12. Na4 Qc7 13. b5 Nb8 14. bxa6 Nxa6 15. Qd2 Qc6 16. Bxa6 Qxa4 17. Qc3+ Qc6 18. Qa5 0-1

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.26"]
[Round "4"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Alvarez Ortiz, Jhon Edison"]
[Result "0-1"]
[ECO "B43"]
[PlyCount "89"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Qc7 4. d4 cxd4 5. Nxd4 a6 6. Be3 Nf6 7. Nb3 d6 8. Be2 Nbd7 9. a4 Be7 10. 0-0 0-0 11. Kh1 b6 12. Qd2 Bb7 13. f3 Rfd8 14. Rad1 Rac8 15. Bd3 Ne5 16. Qf2 Nxd3 17. cxd3 Nd7 18. Rc1 Nc5 19. Nxc5 bxc5 20. Rfd1 Bf6 21. Qg3 g6 22. b3 Qb6 23. Bd2 Qxb3 24. Rb1 Qc2 25. Rbc1 Qb3 26. f4 Qb6 27. Rf1 Bg7 28. f5 exf5 29. exf5 Re8 30. f6 Kh8 31. h4 Re6 32. Bg5 d5 33. Nd1 Bxf6 34. Qf4 Rcc6 35. Bh6 Qc7 36. Qg4 Re5 37. Bf4 Rce6 38. d4 Re4 39. Nc3 Rxd4 40. Qxe6 Rxf4 41. Qe2 Rxh4+ 42. Kg1 Qh2+ 43. Kf2 Bd4+ 44. Ke1 Bxc3+ 45. Rxc3 0-1

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.25"]
[Round "3"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Rodriguez Guitian, Samuel"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "66"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c4 Nf6 4. Nc3 Nbd7 5. Bg5 Be7 6. e3 c6 7. Qc2 dxc4 8. Bxc4 b5 9. Bd3 a6 10. 0-0 Bb7 11. Rac1 c5 12. dxc5 Nxc5 13. Rfd1 Qc7 14. Bxf6 gxf6 15. Ne2 Qb6 16. e4 Rc8 17. Qb1 e5 18. Nh4 Rg8 19. Nf5 Nxd3 20. Rxc8+ Bxc8 21. Qxd3 Bxf5 22. exf5 Qc6 23. g3 Qc7 24. Rc1 Qd8 25. Qc3 Qd7 26. Qc8+ Qxc8 27. Rxc8+ Bd8 28. Nc3 e4 29. Nd5 Rg5 30. Ra8 Rg4 31. Rxa6 Rg5 32. Nb4 Be7 33. Ra7 Kf8 1-0

[Event "Pan American-ch U10"]
[Site "Bogota"]
[Date "2004.07.24"]
[Round "1"]
[White "Ossa Ochoa, Juan Sebastian"]
[Black "Bassan, Remo"]
[Result "1/2-1/2"]
[ECO "D35"]
[PlyCount "85"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 e6 5. Bg5 Nbd7 6. e3 Be7 7. cxd5 cxd5 8. Bd3 0-0 9. 0-0 h6 10. Bh4 Nb6 11. Rc1 Bd7 12. Ne5 Rc8 13. Bg3 Ne8 14. h3 Nd6 15. Qf3 Ndc4 16. Qe2 Bd6 17. Nxd7 Qxd7 18. Bxd6 Nxd6 19. Rc2 Rc7 20. Rfc1 Rfc8 21. b3 Rc6 22. Nb1 a6 23. Qd1 f5 24. Nd2 Ne4 25. Nf3 R6c7 26. Ne5 Qe7 27. Bxe4 fxe4 28. Qd2 Qd6 29. f3 exf3 30. Nxf3 Nd7 31. Qe2 Nf6 32. Ne5 Nd7 33. Rxc7 Rxc7 34. Rxc7 Qxc7 35. Nxd7 Qxd7 36. Qf3 Qc7 37. Qd1 Qc3 38. Qe2 e5 39. dxe5 Qxe5 40. Qd2 Kf7 41. Qd4 Qxd4 42. exd4 Ke6 43. Kf2 1/2-1/2

