[Event "Pan American-ch U12"]
[Site "Bogota"]
[Date "2004.07.29"]
[Round "9"]
[White "Mesa, Juan Sebastian"]
[Black "Marquez, Gabriel"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "37"]
[EventDate "2004.07.23"]
[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 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 g6 5. Bg5 Bg7 6. h3 0-0 7. Bd3 b5 8. a3 Nbd7 9. 0-0 Qc7 10. Qd2 Re8 11. Rfe1 e5 12. Rab1 exd4 13. Nxd4 Nc5 14. Qf4 Nxd3 15. cxd3 Nd7 16. Ndxb5 cxb5 17. Nxb5 Qb6 18. Nxd6 Be5 19. Qf3 1-0

[Event "Pan American-ch U12"]
[Site "Bogota"]
[Date "2004.07.29"]
[Round "9"]
[White "Rivas, Alexander"]
[Black "Marquez, Gabriel"]
[Result "1/2-1/2"]
[ECO "A57"]
[PlyCount "60"]
[EventDate "2004.07.23"]
[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 c5 3. d5 b5 4. e3 g6 5. Nf3 d6 6. Bd3 bxc4 7. Bxc4 Ba6 8. Bxa6 Nxa6 9. 0-0 Bg7 10. Nc3 Qb6 11. a3 Rb8 12. Rb1 0-0 13. Bd2 Ng4 14. h3 Ne5 15. Nxe5 Bxe5 16. f4 Bxc3 17. Bxc3 c4 18. Bd4 Qb7 19. Bc3 Nc5 20. Qd4 f6 21. Qxc4 Rfc8 22. Rfd1 Nb3 23. Qe2 a5 24. Kh1 a4 25. Qg4 Nc5 26. f5 Kf7 27. Rd4 Rg8 28. Qh4 Rg7 29. Rb4 Qa8 30. Rxb8 Qxb8 1/2-1/2

[Event "Pan American-ch U12"]
[Site "Bogota"]
[Date "2004.07.28"]
[Round "7"]
[White "Marquez, Gabriel"]
[Black "Vargas, Pablo"]
[Result "0-1"]
[ECO "D02"]
[PlyCount "68"]
[EventDate "2004.07.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. d4 e6 5. 0-0 Nbd7 6. Nbd2 Be7 7. b3 c6 8. Bb2 a6 9. c4 0-0 10. Re1 Ne4 11. Nxe4 Bxe4 12. Nd2 Bxg2 13. Kxg2 f5 14. Nf3 Nf6 15. Ne5 Kh8 16. f4 Ne4 17. e3 Bd6 18. Qh5 Bxe5 19. fxe5 g6 20. Qe2 Qe7 21. a4 Qg7 22. cxd5 cxd5 23. Rac1 g5 24. Rf1 Rf7 25. Rc2 f4 26. g4 Raf8 27. exf4 gxf4 28. Qf3 h5 29. h3 Qg6 30. Kh2 Ng5 31. Qf2 Nxh3 32. gxh5 Qxh5 33. Qf3 Qxf3 34. Rxf3 Ng5 0-1

[Event "Pan American-ch U12"]
[Site "Bogota"]
[Date "2004.07.27"]
[Round "6"]
[White "Perez, Daniel"]
[Black "Marquez, Gabriel"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2170"]
[PlyCount "46"]
[EventDate "2004.07.23"]
[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 e6 2. Nf3 d5 3. e5 c5 4. d4 Nc6 5. Nc3 Bd7 6. b3 Qb6 7. Be3 cxd4 8. Bxd4 Nxd4 9. Nxd4 Bc5 10. Nce2 Ne7 11. a4 a5 12. c3 Ng6 13. Ng3 Nxe5 14. Bb5 Bxb5 15. axb5 0-0 16. 0-0 Bxd4 17. Qxd4 Qxd4 18. cxd4 Nd3 19. Rad1 Nb4 20. Ne2 g6 21. h3 b6 22. Nf4 Na2 23. Ra1 Nc3 0-1

[Event "Pan American-ch U12"]
[Site "Bogota"]
[Date "2004.07.26"]
[Round "3"]
[White "Krysa, Leandro Sergio"]
[Black "Marquez, Gabriel"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "75"]
[EventDate "2004.07.23"]
[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 e6 2. d3 c5 3. Nd2 d5 4. Ngf3 Nc6 5. g3 Nf6 6. Bg2 Be7 7. 0-0 0-0 8. e5 Nd7 9. Re1 b5 10. Nf1 c4 11. h4 a5 12. Bf4 Ba6 13. N1h2 Nb6 14. Ng5 Nd4 15. Qh5 h6 16. Ng4 Nf5 17. Be4 dxe4 18. dxe4 g6 19. Nxh6+ Nxh6 20. Qxh6 Bxg5 21. Bxg5 f6 22. Qxg6+ Kh8 23. exf6 Qc7 24. Bh6 Rf7 25. Bg7+ Kg8 26. h5 Rxg7 27. fxg7 Qf7 28. Qh6 Qe8 29. Qh8+ Kf7 30. Qh7 Qg8 31. Qg6+ Ke7 32. h6 Qf7 33. Qg5+ Qf6 34. g8N+ Rxg8 35. Qxg8 Qxh6 36. Rad1 Bb7 37. Qd8+ Kf7 38. Qxb6 1-0

[Event "Pan American-ch U12"]
[Site "Bogota"]
[Date "2004.07.26"]
[Round "5"]
[White "Marquez, Gabriel"]
[Black "Arcos Facio, Mateo"]
[Result "0-1"]
[ECO "E60"]
[PlyCount "45"]
[EventDate "2004.07.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d4 d6 6. c4 Nc6 7. e3 Bd7 8. Nc3 e5 9. dxe5 dxe5 10. Qc2 Bf5 11. e4 Bg4 12. Be3 Nd4 13. Bxd4 exd4 14. Nd5 c5 15. Nf4 Re8 16. h3 Bxf3 17. Bxf3 Qd7 18. Bg2 Rad8 19. Rac1 Qc7 20. Rfd1 Nd7 21. b4 Ne5 22. Nd3 Nxd3 23. Rxd3 0-1

[Event "Pan American-ch U12"]
[Site "Bogota"]
[Date "2004.07.25"]
[Round "2"]
[White "Orjuela, Sergio Daniel"]
[Black "Marquez, Gabriel"]
[Result "0-1"]
[ECO "A46"]
[PlyCount "58"]
[EventDate "2004.07.23"]
[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 Nc6 4. Nc3 e6 5. g3 Bxc5 6. e3 d5 7. Bd2 Bd7 8. Bg2 0-0 9. 0-0 Qc7 10. Nb5 Qb6 11. a4 a6 12. Nc3 Rfd8 13. Rb1 d4 14. exd4 Nxd4 15. Be3 Nxf3+ 16. Bxf3 Bxe3 17. fxe3 Qxe3+ 18. Kh1 Bc6 19. Bxc6 Rxd1 20. Rbxd1 bxc6 21. Rd6 Nd5 22. Rxc6 Nxc3 23. Rxc3 Qe2 24. Kg1 f6 25. Rf2 Qd1+ 26. Rf1 Qd4+ 27. Rf2 Qxa4 28. Rf4 Qa1+ 29. Rf1 Qxb2 0-1

[Event "Pan American-ch U12"]
[Site "Bogota"]
[Date "2004.07.24"]
[Round "1"]
[White "Marquez, Gabriel"]
[Black "Reinoso Moran, Jorge"]
[Result "0-1"]
[ECO "A07"]
[BlackElo "1821"]
[PlyCount "152"]
[EventDate "2004.07.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Nc6 4. 0-0 Bf5 5. e3 e6 6. d3 Bd6 7. c4 dxc4 8. dxc4 0-0 9. Nc3 Bb4 10. Qb3 Qd3 11. Rd1 Qc2 12. Qxc2 Bxc2 13. Rd2 Bg6 14. Nh4 a6 15. Nxg6 fxg6 16. Rc2 Rad8 17. a3 Bxc3 18. Rxc3 Rd1+ 19. Bf1 Ng4 20. f4 Rfd8 21. h3 Nf6 22. Kg2 Ne4 23. Rc2 e5 24. Be2 R1d7 25. Bf3 Nc5 26. b4 Nb3 27. Rb2 Nxc1 28. Rxc1 exf4 29. Bd5+ Kf8 30. Rf2 Ne5 31. Rxf4+ Ke8 32. Rcf1 c6 33. Bg8 Rd2+ 34. Kg1 Ke7 35. Bxh7 Rh8 36. Rh4 Rd3 37. Kf2 Rxa3 38. Ke2 Ra2+ 39. Kd1 Ra4 40. c5 a5 41. Rff4 Rxb4 42. Rxb4 axb4 43. Rxb4 Rxh7 44. Rxb7+ Kd8 45. Rb8+ Kc7 46. Re8 Nd3 47. Re7+ Kd8 48. Re6 Nxc5 49. Rxc6 Ne4 50. Rxg6 Nf2+ 51. Kd2 Nxh3 52. e4 Ke7 53. Ke3 Kf7 54. Ra6 Ng5 55. Kf4 Ne6+ 56. Ke5 Rh5+ 57. Kd6 Kf6 58. g4 Re5 59. Ra4 Ng5 60. Kd7 Re7+ 61. Kd8 Rxe4 62. Ra6+ Re6 63. Ra5 Nf7+ 64. Kd7 Re7+ 65. Kc6 Nd8+ 66. Kb6 Re6+ 67. Kc7 Nf7 68. Rf5+ Kg6 69. Kd7 Re5 70. Rf4 Nh6 71. Kd6 Re1 72. Kd5 Kg5 73. Re4 Rxe4 74. Kxe4 Kxg4 75. Ke3 Kg3 76. Ke2 Kh2 0-1

