[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.08"]
[Round "9"]
[White "Martinez Sanchez, David R"]
[Black "Versosa Bravo, Johann"]
[Result "0-1"]
[ECO "E13"]
[WhiteElo "1940"]
[BlackElo "1965"]
[PlyCount "82"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Bg5 Bb7 6. e3 h6 7. Bh4 Bxc3+ 8. bxc3 d6 9. Bd3 Nbd7 10. 0-0 Qe7 11. Qe2 g5 12. Bg3 Ne4 13. Bxe4 Bxe4 14. Nd2 Bb7 15. e4 h5 16. f3 0-0-0 17. a4 a5 18. Nb3 Rdg8 19. c5 dxc5 20. dxc5 Nxc5 21. Nxc5 Qxc5+ 22. Bf2 Qc6 23. Bd4 Rh7 24. Rfe1 g4 25. f4 h4 26. Bf6 h3 27. g3 Rh6 28. Bd4 f5 29. Qd3 Rd8 30. Re2 fxe4 31. Qe3 Rh7 32. Rb2 Rf7 33. Rab1 e5 34. fxe5 Rf3 35. Qg5 e3 36. Qxg4+ Kb8 37. Qxh3 Rxd4 38. cxd4 Rf2 39. Qh8+ Ka7 40. d5 Qxd5 41. Rxf2 Qh1# 0-1

[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.07"]
[Round "7"]
[White "Brizuela Abreu, Ronald Jesus"]
[Black "Martinez Sanchez, David R"]
[Result "1-0"]
[ECO "D87"]
[BlackElo "1940"]
[PlyCount "115"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 0-0 10. 0-0 Qc7 11. Rc1 Rd8 12. Qb3 e6 13. dxc5 Na5 14. Qb4 Nxc4 15. Qxc4 e5 16. Qb4 Be6 17. c4 Bf8 18. Nc3 Rdc8 19. Nd5 Qc6 20. Qc3 Bxc5 21. Qxe5 Bxd5 22. cxd5 Qb6 23. Rxc5 Rxc5 24. Bd4 f6 25. Bxc5 fxe5 26. Bxb6 axb6 27. Ra1 Ra4 28. f3 b5 29. h4 b4 30. Rb1 Kf7 31. Rc1 b5 32. Rc7+ Kf6 33. Rb7 Rxa2 34. Rxb5 Rb2 35. Rb7 h6 36. Kh2 b3 37. Kg3 Rb1 38. Kf2 b2 39. Kg3 h5 40. Kf2 g5 41. Rb6+ Kg7 42. hxg5 h4 43. d6 Rd1 44. Rxb2 Rxd6 45. Rb8 Rd2+ 46. Kg1 Kg6 47. Kh2 Kxg5 48. Rf8 Kg6 49. Rf5 Rd1 50. Rxe5 Ra1 51. Rb5 Kf6 52. Rh5 Rb1 53. Rxh4 Ke5 54. Rh5+ Kd4 55. Ra5 Ke3 56. Kg3 Rb8 57. Rg5 Rf8 58. e5 1-0

[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.07"]
[Round "8"]
[White "Escobar, Guido Jose"]
[Black "Martinez Sanchez, David R"]
[Result "0-1"]
[ECO "C99"]
[WhiteElo "1955"]
[BlackElo "1940"]
[PlyCount "61"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Nc6 14. Nb3 a5 15. Be3 a4 16. Nbd2 Bd7 17. Rc1 Qb7 18. Bb1 Rac8 19. Nf1 exd4 20. Nxd4 Nxd4 21. Bxd4 Be6 22. Ng3 d5 23. e5 Ne4 24. Nxe4 dxe4 25. Qg4 Rfd8 26. Rcd1 Bb4 27. Re3 Qd7 28. Qe2 Bc5 29. Bxe4 Bxd4 30. Red3 Bxe5 31. Rxd7 0-1

[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.06"]
[Round "5"]
[White "Abarca Gonzalez, Nicolas"]
[Black "Martinez Sanchez, David R"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2098"]
[BlackElo "1940"]
[PlyCount "61"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. 0-0 Be7 10. f3 Nc5 11. f4 Ne4 12. Be3 c5 13. Nf3 d4 14. Bc1 Bc6 15. Nbd2 Nxd2 16. Bxd2 c4 17. f5 Bc5 18. Kh1 Qd5 19. Qe1 0-0 20. f6 g6 21. Qh4 Rfe8 22. Rae1 d3 23. cxd3 cxd3 24. b4 Bf8 25. Bh6 Kh8 26. Bxf8 Rxf8 27. Qh6 Rg8 28. Qd2 Qd4 29. e6 fxe6 30. f7 Rgf8 31. Qh6 1-0

[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.06"]
[Round "6"]
[White "Martinez Sanchez, David R"]
[Black "Barreto, Gary"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "1940"]
[BlackElo "1862"]
[PlyCount "68"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Bd3 Bg4 8. f3 Bh5 9. Nge2 Bg6 10. 0-0 0-0 11. Bxg6 hxg6 12. Qd3 Re8 13. Rad1 Nbd7 14. Ng3 Qb6 15. Rd2 Rad8 16. Kh1 c5 17. Na4 Qc6 18. Nxc5 Nxc5 19. dxc5 Bxc5 20. Ne2 Qb6 21. Nd4 Rd7 22. Rfd1 Nh7 23. Bh4 Nf8 24. Bf2 Rde7 25. Nc2 Qxb2 26. Qxd5 Qb6 27. Qc4 Rc7 28. Qa4 Qc6 29. Qb3 Qb6 30. Qa4 Qc6 31. Qg4 Qe6 32. Qf4 Rce7 33. Nd4 Qb6 34. e4 Rd7 1/2-1/2

[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.05"]
[Round "4"]
[White "Cadena Montoya, Gustavo Adolfo"]
[Black "Martinez Sanchez, David R"]
[Result "0-1"]
[ECO "D87"]
[WhiteElo "2107"]
[BlackElo "1940"]
[PlyCount "56"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 0-0 10. 0-0 Qc7 11. Rc1 Rd8 12. Qa4 Bd7 13. Qa3 Na5 14. Bd3 c4 15. Bb1 e5 16. f4 Bg4 17. Ng3 exd4 18. cxd4 Bxd4 19. f5 Be5 20. Bf2 c3 21. h3 Nc4 22. Qb4 Bxg3 23. Qxc3 Bxf2+ 24. Rxf2 Rd1+ 25. Rf1 Qb6+ 26. Kh1 Rxf1+ 27. Rxf1 Be2 28. Rc1 Rd8 0-1

[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.04"]
[Round "3"]
[White "Martinez Sanchez, David R"]
[Black "Cutipa, Elfer"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1940"]
[BlackElo "2090"]
[PlyCount "96"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 c6 7. Bd3 Be7 8. Nge2 Nf8 9. 0-0 Ne6 10. Bh4 0-0 11. f3 b6 12. Bf2 Bb7 13. Rc1 g6 14. Qd2 Qd7 15. Rfd1 Rfd8 16. Bb1 Qe8 17. Qe1 c5 18. dxc5 bxc5 19. Rd2 Rd7 20. Rcd1 Rad8 21. Bc2 Bc6 22. Bb3 c4 23. Bc2 Bc5 24. Nd4 Nxd4 25. exd4 Qxe1+ 26. Rxe1 Bb4 27. Bh4 Kg7 28. Rde2 Rb7 29. Bg3 Ba5 30. Bb1 Rxb2 31. Rxb2 Bxc3 32. Rbe2 Bxe1 33. Rxe1 Nh5 34. Be5+ f6 35. Bc7 Rd7 36. Ba5 Kf7 37. a3 Nf4 38. Bc3 Ba4 39. g3 Ne6 40. Re2 Bd1 41. Rf2 Rb7 42. Bc2 Bxc2 43. Rxc2 Rb3 44. a4 Ra3 45. a5 Rb3 46. Kf2 Nc7 47. Ke2 Nb5 48. Ba1 Ra3 0-1

[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.04"]
[Round "2"]
[White "Martinez Sanchez, David R"]
[Black "Rojas Serrano, Victor"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1940"]
[PlyCount "61"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 Nbd7 7. Bd3 0-0 8. Nge2 c6 9. 0-0 Ne4 10. Bxe7 Qxe7 11. Nxe4 dxe4 12. Bc4 Nb6 13. Bb3 Be6 14. Nf4 Nd5 15. Nxd5 cxd5 16. Qd2 f5 17. Rac1 Rf6 18. Rc5 Qf7 19. Rfc1 Rh6 20. Bxd5 Qh5 21. Bxe6+ Rxe6 22. Qc3 Ree8 23. Rc7 b6 24. d5 Qg6 25. Qd4 Qf6 26. Qxf6 gxf6 27. d6 Red8 28. d7 Kf7 29. Rc8 Ke7 30. Rxa8 Rxa8 31. Rc8 1-0

[Event "Pan American-ch U18"]
[Site "Cali"]
[Date "2011.07.03"]
[Round "1"]
[White "Torres, Juan Camilo"]
[Black "Martinez Sanchez, David R"]
[Result "1-0"]
[ECO "D93"]
[WhiteElo "2206"]
[BlackElo "1940"]
[PlyCount "85"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d5 5. Bf4 c6 6. e3 0-0 7. h3 b6 8. Rc1 dxc4 9. Bxc4 Nd5 10. Bxd5 cxd5 11. Nb5 Na6 12. 0-0 Bb7 13. Qb3 Qd7 14. Ne5 Bxe5 15. Bxe5 Bc6 16. a4 Rfc8 17. Rc3 Bxb5 18. axb5 Rxc3 19. bxc3 Nc7 20. Bxc7 Qxc7 21. Qxd5 Rc8 22. Rc1 e6 23. Qa2 Qc4 24. Qxc4 Rxc4 25. Kf1 Kf8 26. Ke2 Ra4 27. Kd3 Ke7 28. c4 Kd6 29. Kc3 a5 30. bxa6 Rxa6 31. Rc2 Ra1 32. Kb3 Rg1 33. g3 Rb1+ 34. Rb2 Rc1 35. Ra2 Rf1 36. Kc3 Kc6 37. Kd3 f6 38. Ra7 Rxf2 39. Rxh7 Rg2 40. g4 Rg3 41. Rh6 Rf3 42. Ke2 Rg3 43. Kf2 1-0

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.07"]
[Round "9"]
[White "Duque, Jorge Andres"]
[Black "Martinez Sanchez, David R"]
[Result "1/2-1/2"]
[ECO "C99"]
[PlyCount "66"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Nc6 14. d5 Nb4 15. Bb1 a5 16. Nf1 Bd7 17. Ng3 Rfc8 18. Bg5 Nc2 19. Bxc2 Qxc2 20. Re2 Qxd1+ 21. Rxd1 b4 22. Nh4 h6 23. Nhf5 Bf8 24. Nxh6+ gxh6 25. Bxf6 a4 26. Nf5 Bxf5 27. exf5 Rc4 28. Rd3 Rac8 29. Kf1 Rc1+ 30. Re1 R1c2 31. Re2 Rc1+ 32. Re1 R1c2 33. Rb1 Kh7 1/2-1/2

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.06"]
[Round "8"]
[White "Barreto, Gary"]
[Black "Martinez Sanchez, David R"]
[Result "1-0"]
[ECO "E92"]
[PlyCount "77"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 h6 10. Bxf6 Bxf6 11. Nd5 Nd7 12. Nxc7 Rb8 13. Nd5 Bg7 14. 0-0-0 b6 15. Ne7+ Kf8 16. Nc6 Ke8 17. Nxb8 Nxb8 18. Rxd8+ Kxd8 19. Rd1+ Ke7 20. Nd2 Nc6 21. Nb3 h5 22. c5 Nd4 23. Nxd4 exd4 24. cxb6 axb6 25. f4 Bb7 26. e5 f6 27. exf6+ Bxf6 28. g3 Ke6 29. Bc4+ Bd5 30. Bxd5+ Kxd5 31. Kd2 Ke4 32. Re1+ Kf5 33. Kd3 h4 34. a4 h3 35. b4 Bg7 36. a5 bxa5 37. bxa5 Bf8 38. a6 Bc5 39. Re5+ 1-0

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "7"]
[White "Martinez Sanchez, David R"]
[Black "Duque, Juan Camilo"]
[Result "0-1"]
[ECO "B32"]
[BlackElo "2170"]
[PlyCount "56"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qf6 8. Qxf6 Nxf6 9. Nc3 d5 10. exd5 Nb4 11. Bd3 Nfxd5 12. Nxd5 Nxd5 13. Bd2 0-0 14. Be4 Nb6 15. c3 Rb8 16. 0-0 Nc4 17. Bc1 Nd6 18. Bc2 Be6 19. Re1 f6 20. f4 Nf7 21. fxe5 fxe5 22. b3 Rfd8 23. Be4 b5 24. Re2 Rbc8 25. Bb2 Bg4 26. Rc2 b4 27. c4 a5 28. Bd5 Rxd5 0-1

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "6"]
[White "Silva, Igor dos Santos"]
[Black "Martinez Sanchez, David R"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1953"]
[PlyCount "128"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. Bg5 d6 6. e3 c5 7. Be2 Na6 8. a3 Nc7 9. 0-0 a6 10. b4 Nd7 11. Rc1 f6 12. Bh4 Rb8 13. Bg3 e5 14. bxc5 dxc5 15. d5 f5 16. e4 f4 17. Bh4 Qe8 18. d6 Ne6 19. Nd5 h6 20. Ne7+ Kh7 21. Nxc8 Rxc8 22. Be7 Rf7 23. Qd5 Nd8 24. Bxd8 Rxd8 25. Qxb7 Nf6 26. Qxa6 Nxe4 27. Rfd1 Rfd7 28. Qc6 Nxd6 29. Qxc5 e4 30. Ne1 Nb7 31. Qb4 Rxd1 32. Bxd1 e3 33. f3 e2 34. Qb3 exd1Q 35. Rxd1 Rxd1 36. Qxd1 Qe3+ 37. Kh1 Qxa3 38. Nd3 Qd6 39. Qc2 Qd4 40. h3 Nc5 41. Nb4 Qb2 42. Qxb2 Bxb2 43. h4 Bd4 44. Kh2 Bf2 45. Kh3 Bg3 46. Kg4 Ne6 47. h5 g5 48. Nd3 Nd4 49. Nc5 Kg7 50. Na6 Kf6 51. Nc5 Ke7 52. Ne4 Ke6 53. c5 Nc6 54. Nd2 Bf2 55. Ne4 Be3 56. g3 Ne5+ 57. Kh3 Nxf3 58. gxf4 Bxf4 59. Kg4 Ne5+ 60. Kh3 Kd5 61. Nf6+ Kxc5 62. Ng8 g4+ 63. Kg2 Bg5 64. Kg3 Kd6 0-1

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "4"]
[White "Alvarez Navarro, Martin"]
[Black "Martinez Sanchez, David R"]
[Result "0-1"]
[ECO "A04"]
[PlyCount "129"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d3 d6 4. g3 g6 5. Bg2 Bg7 6. 0-0 Nf6 7. c3 Be6 8. Nbd2 0-0 9. Ng5 Qd7 10. Nxe6 Qxe6 11. Nf3 Rfe8 12. Ng5 Qd7 13. Bh3 Qe7 14. Re1 h6 15. Nf3 Rad8 16. Qb3 b6 17. Qa4 Na5 18. b4 Nb7 19. a3 a5 20. Bb2 Ra8 21. Qc6 Ra7 22. Nh4 Nd8 23. Qc4 Ne6 24. Bc1 h5 25. Bd2 Kh7 26. Rf1 axb4 27. axb4 Rb7 28. f3 Bh6 29. Bxh6 Kxh6 30. Rf2 Nd7 31. Qc6 Rbb8 32. Rfa2 b5 33. Qd5 Rb6 34. Qb3 Kh7 35. Bf1 c6 36. Ra7 Rd8 37. Ng2 Qg5 38. R7a2 Kg7 39. Kf2 Rdb8 40. h4 Qe7 41. Ne3 Qf6 42. Bh3 Ndf8 43. Ke2 R8b7 44. Ra3 Qe7 45. Qa2 Rb8 46. Rg1 R8b7 47. Qa1 Kh7 48. Rh1 Kg7 49. Ng2 c5 50. bxc5 dxc5 51. g4 Rd6 52. gxh5 gxh5 53. Rg1 Kh8 54. Qc1 Qf6 55. Bxe6 Nxe6 56. Ra8+ Rd8 57. Rxd8+ Nxd8 58. Ne3 Qxh4 59. Rh1 Qg5 60. Rh2 Ne6 61. Qa1 Nf4+ 62. Kf2 Rb8 63. Qa7 Rg8 64. Rh1 Qg3+ 65. Kf1 0-1

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "5"]
[White "Martinez Sanchez, David R"]
[Black "Pacheco, Josue"]
[Result "0-1"]
[ECO "C10"]
[BlackElo "1982"]
[PlyCount "58"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bd7 5. Nf3 Bc6 6. Bd3 Nd7 7. 0-0 Ngf6 8. Re1 Nxe4 9. Bxe4 Bxe4 10. Rxe4 Nf6 11. Re1 h6 12. c3 Bd6 13. Ne5 0-0 14. Bf4 c6 15. Bg3 Qc7 16. Nc4 Bxg3 17. hxg3 Rad8 18. Qf3 Rd5 19. Re5 Rxe5 20. Nxe5 Rd8 21. Re1 Rd5 22. a3 c5 23. Qf4 Qb6 24. dxc5 Qxb2 25. Qb4 Qd2 26. Nf3 Qc2 27. Qxb7 Ng4 28. Rf1 Rd1 29. Qa6 Qxf2+ 0-1

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.03"]
[Round "3"]
[White "Martinez Sanchez, David R"]
[Black "Valencia, Adrian David"]
[Result "1-0"]
[ECO "C41"]
[BlackElo "1981"]
[PlyCount "101"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. dxe5 dxe5 5. Nc3 Be7 6. Be3 Ngf6 7. Be2 c6 8. 0-0 0-0 9. h3 Qc7 10. Re1 Bc5 11. Bxc5 Nxc5 12. Bc4 b5 13. Bd3 Rd8 14. Qe2 Nh5 15. Rad1 Nf4 16. Qe3 Ncxd3 17. cxd3 b4 18. Na4 Qd6 19. Rd2 Qg6 20. g3 f6 21. h4 Qg4 22. Red1 Ng6 23. d4 Be6 24. Nc5 Bc4 25. b3 Bb5 26. dxe5 Rxd2 27. Rxd2 Nxe5 28. Nxe5 fxe5 29. Kg2 Rf8 30. Rd7 Be2 31. Rd2 Bf3+ 32. Kh2 h6 33. Rd6 Be2 34. Kg2 Rf3 35. Rd8+ Kh7 36. Qc1 Rxg3+ 37. fxg3 Qf3+ 38. Kh2 Qf2+ 39. Kh3 Bf1+ 40. Kg4 Qe2+ 41. Kf5 Bh3+ 42. Kxe5 Qh5+ 43. Kd4 Qe2 44. Rf8 Qh5 45. Qc2 Qg6 46. Qf2 a5 47. Qf4 Qh5 48. Qf3 Bg4 49. Qe3 Qg6 50. e5 Qc2 51. Qe4+ 1-0

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "2"]
[White "Jarrin Cobos, Jose"]
[Black "Martinez Sanchez, David R"]
[Result "1-0"]
[ECO "C97"]
[WhiteElo "1903"]
[PlyCount "79"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. d5 Bd7 13. Nbd2 Rab8 14. b3 Nb7 15. Nf1 a5 16. Ne3 b4 17. c4 Rfe8 18. Nh2 Qc8 19. g4 h6 20. Nf5 Bxf5 21. gxf5 Nh7 22. Qg4 Bg5 23. Kh1 Bxc1 24. Raxc1 Nf6 25. Qh4 Qd8 26. Rg1 Kh7 27. Nf3 Nd7 28. Qh5 Qf6 29. Rg2 Nd8 30. Rcg1 Rg8 31. Nh2 Qe7 32. Ng4 Qg5 33. Qxg5 hxg5 34. Ne3 f6 35. h4 gxh4 36. Rg4 Nf7 37. Rxh4+ Nh6 38. Ng4 Rh8 39. Nxh6 gxh6 40. Rg6 1-0

[Event "Pan American-ch U14"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "1"]
[White "Martinez Sanchez, David R"]
[Black "Meza Ponce, Jerry"]
[Result "1-0"]
[ECO "B72"]
[BlackElo "1936"]
[PlyCount "125"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. 0-0 d6 9. h3 Bd7 10. Qd2 a6 11. Rad1 b5 12. Bb3 b4 13. Nxc6 Bxc6 14. Ne2 Nxe4 15. Qxb4 a5 16. Qc4 Qd7 17. Nd4 Nc5 18. Nxc6 Qxc6 19. Bxc5 Qxc5 20. Qxc5 dxc5 21. c3 Rfd8 22. Rfe1 e6 23. Kf1 Kf8 24. Rxd8+ Rxd8 25. Rd1 Rxd1+ 26. Bxd1 Bh6 27. Ke2 Ke7 28. Kd3 Kd6 29. Kc4 Bc1 30. b3 Kc6 31. b4 cxb4 32. cxb4 axb4 33. Kxb4 Kb6 34. a4 Bd2+ 35. Kc4 Bh6 36. Bc2 Bg7 37. g4 Be5 38. h4 Bf6 39. h5 Be5 40. f3 gxh5 41. gxh5 f5 42. Bb3 Kc6 43. Kd3 Kd7 44. a5 Ke7 45. a6 Bb8 46. Kc4 h6 47. Kc5 Ba7+ 48. Kc6 e5 49. Kb7 Bd4 50. a7 Bxa7 51. Kxa7 Kf6 52. Kb6 Kg5 53. Bd1 f4 54. Kc5 Kxh5 55. Kd5 Kh4 56. Kxe5 Kg3 57. Ke4 h5 58. Ba4 h4 59. Bd7 Kg2 60. Kxf4 Kf2 61. Ke4 Kg2 62. f4 Kg3 63. Ke5 1-0

