[Event "Merida op"]
[Site "Merida"]
[Date "2001.??.??"]
[Round "1"]
[White "Ancheyta Tejas, Victor"]
[Black "Preve, Alejandro"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2325"]
[PlyCount "49"]
[EventDate "2001.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. f4 Qc7 9. g4 h6 10. g5 hxg5 11. fxg5 Nfd7 12. Be3 Nb6 13. Qd2 N8d7 14. 0-0-0 Nc4 15. Bxc4 Bxc4 16. Nd5 Bxd5 17. Qxd5 Nb6 18. Bxb6 Qxb6 19. Na5 0-0-0 20. Rd3 Rd7 21. Rb3 Qa7 22. Nxb7 Rxb7 23. Qc6+ Kb8 24. Qe8+ Kc7 25. Rc3+ 1-0

[Event "Merida op"]
[Site "Merida"]
[Date "2001.??.??"]
[Round "4"]
[White "Preve, Alejandro"]
[Black "Quijano Xacur, Oscar"]
[Result "0-1"]
[ECO "D63"]
[BlackElo "2126"]
[PlyCount "56"]
[EventDate "2001.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Bg5 Nbd7 5. e3 Be7 6. Nc3 0-0 7. Rc1 b6 8. Be2 Bb7 9. cxd5 exd5 10. 0-0 c5 11. Re1 Ne4 12. Bxe7 Qxe7 13. dxc5 Nxc3 14. Rxc3 bxc5 15. Qc2 f5 16. Bb5 Rac8 17. Bxd7 Qxd7 18. Rxc5 Rxc5 19. Qxc5 Rc8 20. Qxa7 Ra8 21. Qd4 Rxa2 22. h3 Qb5 23. b4 Rc2 24. Ne5 Qa6 25. Qa1 Ra2 26. Qb1 g6 27. Qb3 Ra1 28. Rxa1 Qxa1+ 0-1

[Event "Merida op"]
[Site "Merida"]
[Date "2001.??.??"]
[Round "3"]
[White "Romero, Ricardo"]
[Black "Preve, Alejandro"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2239"]
[PlyCount "56"]
[EventDate "2001.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 c5 5. c3 Nc6 6. 0-0 Bd6 7. Nbd2 b6 8. Re1 0-0 9. e4 Nxe4 10. Nxe4 dxe4 11. Rxe4 Qc7 12. dxc5 bxc5 13. Qc2 h6 14. Bd2 f5 15. Rh4 Rb8 16. Re1 Ne5 17. Nxe5 Bxe5 18. Qc1 Bf6 19. Rh3 Qf7 20. Be3 c4 21. Rd1 e5 22. Rd6 Bb7 23. Bf1 Rfd8 24. Rxd8+ Rxd8 25. Bxa7 Qd5 26. f3 Qxf3 27. Bxc4+ Kh8 28. Bf1 Rd1 0-1

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "5"]
[White "Alayola Montanez, Jose Enrique"]
[Black "Preve, Alejandro"]
[Result "1-0"]
[ECO "B93"]
[WhiteElo "2210"]
[PlyCount "33"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nc6 8. fxe5 dxe5 9. Qxd8+ Kxd8 10. Bc4 b5 11. Bxf7 Bc5 12. Bg5 Ke7 13. Bd5 Bd7 14. Bxc6 Bxc6 15. Nxe5 Be8 16. Nd3 h6 17. Bxf6+ 1-0

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "1"]
[White "Balam, Glendy"]
[Black "Preve, Alejandro"]
[Result "0-1"]
[ECO "B86"]
[PlyCount "56"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Nf3 Qc7 8. 0-0 Qxc4 9. Be3 Bd7 10. Qd3 Qxd3 11. cxd3 b5 12. b4 Nc6 13. a3 Rc8 14. Rac1 Be7 15. d4 0-0 16. Bf4 e5 17. dxe5 dxe5 18. Nxe5 Nxe5 19. Bxe5 Ng4 20. Nd5 Bg5 21. Rxc8 Rxc8 22. Bd6 Rc1 23. Nc7 Rxf1+ 24. Kxf1 Bc8 25. f3 Ne3+ 26. Kf2 Nc4 27. f4 Nxd6 28. fxg5 Nxe4+ 0-1

[Event "Aniv Fund Prog op"]
[Site "Mexico City"]
[Date "1997.??.??"]
[Round "?"]
[White "Balam Maldonado, Ethel"]
[Black "Preve, Alejandro"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "39"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "MEX"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. b3 Be7 6. Bb2 0-0 7. Nbd2 Re8 8. Be2 Nc6 9. 0-0 Ne4 10. Bd3 Bf6 11. Re1 Bg4 12. Nxe4 dxe4 13. Bxe4 Nxd4 14. Bxb7 Rxe1+ 15. Qxe1 Bxf3 16. Bxa8 Bxa8 17. Bxd4 Bxd4 18. Rd1 Bc6 19. c3 Qd5 20. Qf1 1-0

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "1"]
[White "Casares Cabanas, Carlos"]
[Black "Preve, Alejandro"]
[Result "0-1"]
[ECO "A01"]
[PlyCount "44"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. b3 d5 2. d3 Nc6 3. Bb2 e5 4. e3 Nf6 5. h3 Bd6 6. Nf3 Qe7 7. a3 Bd7 8. Be2 0-0-0 9. 0-0 e4 10. Nfd2 Rhg8 11. d4 g5 12. Re1 g4 13. h4 g3 14. f4 Ng4 15. Nf1 Qxh4 16. Bxg4 Bxg4 17. Qd2 Rg6 18. b4 Rh6 19. Nxg3 Qxg3 20. b5 Ne7 21. Nc3 Bf3 22. Ne2 Qxg2# 0-1

[Event "Unacar-ch"]
[Site "Cuidad del Carmen "]
[Date "1997.??.??"]
[Round "4"]
[White "Herrera, Rafel"]
[Black "Preve, Alejandro"]
[Result "1/2-1/2"]
[ECO "A43"]
[PlyCount "101"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 c5 2. d5 g6 3. c4 d6 4. Nc3 Bg7 5. Bd2 f5 6. f4 Nf6 7. g3 Ne4 8. Nxe4 fxe4 9. Qc2 Bf5 10. e3 Nd7 11. Bc3 Nf6 12. Qa4+ Kf7 13. Bh3 a6 14. Qd1 b5 15. g4 Bc8 16. g5 Nh5 17. Bxg7 Nxg7 18. Qc2 Qa5+ 19. Kd1 Bf5 20. Bg2 bxc4 21. Qxc4 Qb5 22. Qxb5 axb5 23. Ne2 e6 24. dxe6+ Kxe6 25. Nc3 b4 26. Nxe4 Bxe4 27. Bxe4 d5 28. Bc2 Rhf8 29. Re1 Rad8 30. Ke2 Nf5 31. Bxf5+ Kxf5 32. Kf3 Rfe8 33. Red1 Re4 34. b3 d4 35. Rd3 Rde8 36. Re1 Rxf4+ 37. exf4 Rxe1 38. Kf2 Rc1 39. Rh3 Kxf4 40. Rxh7 Rc2+ 41. Ke1 Kxg5 42. Rc7 Kf4 43. Kd1 d3 44. h4 Kg4 45. Rc6 g5 46. hxg5 Kxg5 47. Rd6 Rc3 48. Kd2 Rc2+ 49. Kxd3 Rxa2 50. Rd5+ Kf6 51. Rxc5 1/2-1/2

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "3"]
[White "Miranda, Ruben"]
[Black "Preve, Alejandro"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "59"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e3 Be7 4. Bd3 d5 5. Nd2 Nbd7 6. f4 c5 7. c3 a6 8. Ngf3 h6 9. Bh4 Ng4 10. Bxe7 Qxe7 11. Qe2 Rb8 12. h3 Ngf6 13. 0-0 c4 14. Bc2 b5 15. a3 a5 16. Ne5 Nxe5 17. fxe5 Nh7 18. Qh5 0-0 19. Nf3 Bd7 20. e4 Bc6 21. exd5 Bxd5 22. Rae1 b4 23. axb4 axb4 24. Rf2 bxc3 25. bxc3 Ng5 26. Nh2 Ne4 27. Rf4 f5 28. exf6 Nxf6 29. Qg6 Be4 30. Rfxe4 1-0

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "3"]
[White "Miranda, Ruben"]
[Black "Preve, Alejandro"]
[Result "1-0"]
[ECO "D06"]
[PlyCount "61"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. e3 Bf5 3. c4 e6 4. Qb3 Nc6 5. Nc3 Nb4 6. e4 dxe4 7. Be3 b6 8. 0-0-0 Nf6 9. a3 Nd3+ 10. Bxd3 exd3 11. Nf3 c5 12. Ne5 Nd7 13. Nxd3 cxd4 14. Bxd4 Be7 15. Ne5 Nxe5 16. Bxe5 Qc8 17. Qb5+ Kf8 18. Rd7 a6 19. Qa4 b5 20. Qd1 Qxc4 21. f4 Rc8 22. Bd6 Re8 23. Bxe7+ Kg8 24. Qd2 h6 25. h3 Kh7 26. g4 Bg6 27. h4 Rc8 28. h5 Be4 29. Re1 f5 30. g5 Qa2 31. g6+ 1-0

[Event "Unacar-ch"]
[Site "Cuidad del Carmen "]
[Date "1997.??.??"]
[Round "6"]
[White "Palma, Amado"]
[Black "Preve, Alejandro"]
[Result "1/2-1/2"]
[ECO "C06"]
[PlyCount "29"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 b6 6. Ne2 Ba6 7. Bxa6 Nxa6 8. 0-0 c5 9. c4 Nc7 10. cxd5 Nxd5 11. Nf3 Be7 12. Qd3 0-0 13. h4 Bxh4 14. g3 Be7 15. Kg2 1/2-1/2

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "5"]
[White "Pech, Jose"]
[Black "Preve, Alejandro"]
[Result "1/2-1/2"]
[ECO "B98"]
[PlyCount "53"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. 0-0-0 Nc6 10. h3 Bd7 11. g4 Rc8 12. Nxc6 Bxc6 13. Bd3 b5 14. Rhe1 h6 15. Bxf6 Bxf6 16. Nd5 Bxd5 17. exd5 e5 18. Bf5 Rb8 19. fxe5 Bxe5 20. Rxe5+ dxe5 21. d6 Qc5 22. d7+ Ke7 23. Rd5 Qg1+ 24. Rd1 Qc5 25. Rd5 Qg1+ 26. Rd1 Qc5 27. Rd5 1/2-1/2

[Event "Carlos Torre Memorial op 10th"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "8"]
[White "Porras Rodriguez, Miriam"]
[Black "Preve, Alejandro"]
[Result "1/2-1/2"]
[ECO "B86"]
[WhiteElo "2030"]
[PlyCount "80"]
[EventDate "1997.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. 0-0 Be7 9. a3 Bd7 10. Be3 Nc6 11. f4 Qc7 12. Qf3 Rb8 13. g4 Nxd4 14. Bxd4 e5 15. fxe5 dxe5 16. Be3 Bxg4 17. Bxf7+ Kxf7 18. Qxg4 Bc5 19. Bxc5 Qxc5+ 20. Kh1 Rbd8 21. Rad1 Rxd1 22. Qxd1 Ke7 23. Qf3 Rf8 24. Qg3 Rf7 25. Nd5+ Kd6 26. Rd1 Nd7 27. Nf6+ Ke6 28. Nxd7 Rxd7 29. Rxd7 Kxd7 30. Qxg7+ Kc6 31. Qh6+ Qd6 32. Qxd6+ Kxd6 33. b4 Ke6 34. Kg2 Kf6 35. Kg3 Kg5 36. h4+ Kh5 37. Kh3 Kg6 38. Kg4 h6 39. Kg3 Kf6 40. Kh3 Kg7 1/2-1/2

[Event "Unacar-ch"]
[Site "Cuidad del Carmen "]
[Date "1997.??.??"]
[Round "5"]
[White "Preve, Alejandro"]
[Black "De la Porte, Olivier"]
[Result "1-0"]
[ECO "A71"]
[PlyCount "41"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bg5 Bg7 8. Nf3 a6 9. a4 Bg4 10. h3 Bxf3 11. Qxf3 0-0 12. Bc4 Nbd7 13. Qe2 Re8 14. 0-0 Qc7 15. a5 Nh5 16. g4 Nhf6 17. f4 Rab8 18. Qf3 b5 19. axb6 Nxb6 20. Bxa6 Nfd7 21. Nb5 1-0

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "2"]
[White "Preve, Alejandro"]
[Black "Gonzalez, Isidro"]
[Result "1-0"]
[ECO "A40"]
[PlyCount "49"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 e5 2. dxe5 Nc6 3. Nf3 f6 4. exf6 Nxf6 5. Nc3 d5 6. e3 Bf5 7. Bd3 Bg6 8. 0-0 d4 9. exd4 Nxd4 10. Nxd4 Qxd4 11. Bxg6+ hxg6 12. Qxd4 Bd6 13. Re1+ Kf7 14. Bf4 g5 15. Bxd6 Rad8 16. Qc4+ Kg6 17. Be7 Rh4 18. Qxc7 Rd7 19. Qc8 Rd2 20. Bxf6 gxf6 21. Ne4 Rd4 22. Ng3 Rhf4 23. Qg8+ Kh6 24. Re7 g4 25. Rh7# 1-0

[Event "Unacar-ch"]
[Site "Cuidad del Carmen "]
[Date "1997.??.??"]
[Round "3"]
[White "Preve, Alejandro"]
[Black "Huertas Soris, Ramon Antonio"]
[Result "0-1"]
[ECO "A40"]
[BlackElo "2285"]
[PlyCount "54"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 c5 2. d5 g6 3. c4 Bg7 4. Nc3 f5 5. Bf4 d6 6. Nf3 Bxc3+ 7. bxc3 Qa5 8. Qc2 Nf6 9. Nd2 Nbd7 10. f3 0-0 11. Nb3 Qa4 12. e3 Nb6 13. Qd3 Bd7 14. Be2 Rad8 15. 0-0 e5 16. Bxe5 dxe5 17. Nxc5 Qa3 18. Nxd7 Rxd7 19. e4 f4 20. Rfb1 Rc8 21. Rb3 Qc5+ 22. Kf1 Nxc4 23. Qxc4 Qxc4 24. Bxc4 Rxc4 25. Rab1 b6 26. Ke2 Ne8 27. Kd3 Rdc7 0-1

[Event "Unacar-ch"]
[Site "Cuidad del Carmen "]
[Date "1997.??.??"]
[Round "1"]
[White "Preve, Alejandro"]
[Black "Ibarra Chami, Luis Fernando"]
[Result "1-0"]
[ECO "E24"]
[PlyCount "81"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d5 6. cxd5 exd5 7. Qc2 0-0 8. Bg5 Re8 9. Nf3 Nbd7 10. e3 h6 11. Bh4 c6 12. Bd3 Kh8 13. 0-0 g6 14. Bxg6 Kg7 15. Bf5 Nf8 16. Ne5 Bxf5 17. Qxf5 Re6 18. Ng4 N8h7 19. f4 Qd6 20. Ne5 Rc8 21. g4 Rc7 22. Qd3 Ne4 23. c4 f6 24. c5 Qf8 25. Nf3 Qf7 26. Rae1 Qg6 27. Re2 Qe8 28. Rg2 Kh8 29. Be1 Rg7 30. h4 Qg8 31. Nh2 f5 32. Qe2 Rf6 33. g5 Re6 34. Nf3 Nf8 35. Ne5 Kh7 36. Qh5 Kh8 37. Kh2 Kh7 38. Rfg1 Reg6 39. Nxg6 Rxg6 40. gxh6 Rxg2+ 41. Rxg2 1-0

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "4"]
[White "Preve, Alejandro"]
[Black "Quijano Xacur, Oscar"]
[Result "1-0"]
[ECO "D08"]
[PlyCount "57"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 dxc4 6. e3 c5 7. Bxc4 Nf6 8. Nf3 Bg4 9. h3 Bxf3 10. Qxf3 cxd4 11. Qxb7 Nbd7 12. cxd4 exd4 13. 0-0 0-0 14. exd4 Nb6 15. Ba2 Qxd4 16. Be3 Qb2 17. Rfb1 Qxa3 18. Bxf7+ Rxf7 19. Qxf7+ Kxf7 20. Rxa3 Nfd5 21. Bxb6 Rb8 22. Rxa7+ Kf8 23. Bc5+ Ne7 24. Rxb8+ Kf7 25. Rxe7+ Kg6 26. Rb6+ Kh5 27. Rxg7 h6 28. Kh2 Kh4 29. Rxh6# 1-0

[Event "Carlos Torre Memorial op 10th"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "9"]
[White "Preve, Alejandro"]
[Black "Valencia, Alberto"]
[Result "0-1"]
[ECO "D53"]
[PlyCount "78"]
[EventDate "1997.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 e6 5. Nf3 Be7 6. e3 Nbd7 7. Be2 0-0 8. Nd2 Re8 9. f4 dxc4 10. Nxc4 Nb6 11. Ne5 Nbd5 12. Qd2 Nd7 13. Nf3 h6 14. Bxe7 Qxe7 15. e4 N5f6 16. e5 Nd5 17. g4 c5 18. 0-0-0 cxd4 19. Nxd4 g6 20. Ndb5 N7b6 21. Nd6 Rd8 22. h4 Bd7 23. h5 Qf8 24. g5 Nxc3 25. Qxc3 Rac8 26. Nc4 Nxc4 27. Bxc4 b5 28. Qg3 Rxc4+ 29. Kb1 Bc6 30. Rhe1 Be4+ 31. Ka1 Rdc8 32. a3 Qg7 33. gxh6 Qxh6 34. hxg6 fxg6 35. Rd2 Bd5 36. Rxd5 exd5 37. f5 Rc1+ 38. Rxc1 Qxc1+ 39. Ka2 Qc4+ 0-1

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "4"]
[White "Preve, Alejandro"]
[Black "Varguez Baquedano, Alfredo"]
[Result "1-0"]
[ECO "D63"]
[PlyCount "39"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 Nbd7 6. e3 h6 7. Bh4 0-0 8. Rc1 b6 9. Nd2 Re8 10. Bd3 Bb7 11. 0-0 Rc8 12. Bg3 c5 13. Nb5 a6 14. Nd6 Bxd6 15. Bxd6 Rc6 16. Bg3 cxd4 17. exd4 dxc4 18. Nxc4 Nf8 19. Qd2 Qxd4 20. Bh7+ 1-0

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "2"]
[White "Preve, Alejandro"]
[Black "Zumarraga, Rodolfo"]
[Result "1-0"]
[ECO "D31"]
[PlyCount "79"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nd7 4. cxd5 exd5 5. Nxd5 c6 6. Nc3 Ngf6 7. Nf3 Bb4 8. Bd2 c5 9. a3 Ba5 10. dxc5 Bxc3 11. Bxc3 Nxc5 12. Qxd8+ Kxd8 13. e3 Bf5 14. Rd1+ Kc8 15. Bc4 Be6 16. Bxe6+ fxe6 17. 0-0 Rd8 18. Rxd8+ Kxd8 19. Rd1+ Kc7 20. b4 Nce4 21. Be5+ Kc6 22. Nd4+ Kd5 23. Nf3+ Kc6 24. Rc1+ Kb5 25. Nd4+ Ka4 26. f3 Ng5 27. Rc7 b6 28. Rxg7 Nxf3+ 29. gxf3 Ne8 30. Rxh7 Kxa3 31. b5 a5 32. bxa6 Rxa6 33. Rh8 Ra8 34. Nxe6 Ra5 35. f4 b5 36. Rxe8 Ra6 37. Nc7 Ra5 38. Ra8 Rxa8 39. Nxa8 b4 40. f5 1-0

[Event "Aniv Fund Prog op"]
[Site "Mexico City"]
[Date "1997.??.??"]
[Round "?"]
[White "Quijano Xacur, Oscar"]
[Black "Preve, Alejandro"]
[Result "0-1"]
[ECO "B98"]
[PlyCount "73"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "MEX"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Bc4 Qc7 9. Bb3 Bd7 10. Qd2 b5 11. 0-0-0 b4 12. Nce2 Nxe4 13. Qe3 Nxg5 14. fxg5 d5 15. Ng3 g6 16. Rde1 Qd8 17. h4 Nc6 18. Ba4 Nxd4 19. Bxd7+ Qxd7 20. Qxd4 0-0 21. Kb1 Rac8 22. h5 Rc4 23. Qe5 Qc7 24. Qxc7 Rxc7 25. Re5 Bd6 26. Ree1 Bxg3 27. Re3 Bf4 28. Rb3 a5 29. a3 Rb8 30. c3 a4 31. Rxb4 Rxb4 32. axb4 a3 33. bxa3 Rxc3 34. Kb2 Rg3 35. Rf1 Be5+ 36. Ka2 Rxg2+ 37. Kb3 0-1

[Event "Unacar-ch"]
[Site "Cuidad del Carmen "]
[Date "1997.??.??"]
[Round "2"]
[White "Rustand, Braden"]
[Black "Preve, Alejandro"]
[Result "0-1"]
[ECO "A22"]
[PlyCount "62"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "MEX"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. d3 Bc5 4. e4 Nc6 5. Be3 Qe7 6. Be2 Nd4 7. Nf3 Nxe2 8. Qxe2 Bxe3 9. Qxe3 d6 10. 0-0 Ng4 11. Qe2 c6 12. Rad1 f5 13. b4 Be6 14. Qb2 0-0 15. h3 Nh6 16. c5 fxe4 17. Nxe4 Rxf3 18. cxd6 Qe8 19. Qxe5 Rf5 20. Qg3 b6 21. Rfe1 Nf7 22. Qe3 Qd7 23. g4 Rb5 24. Nf6+ gxf6 25. Qxe6 Qxd6 26. a3 Re5 27. Rxe5 fxe5 28. Qf5 Rf8 29. g5 Qg6 30. Qg4 Qxg5 31. Qxg5+ Nxg5 0-1

[Event "Merida op1"]
[Site "Merida"]
[Date "1996.??.??"]
[Round "3"]
[White "Cardena, Manuel"]
[Black "Preve, Alejandro"]
[Result "1-0"]
[ECO "B50"]
[PlyCount "74"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. Nf3 d6 4. Be2 Nf6 5. Qc2 Bg4 6. 0-0 Qc7 7. d4 Bxf3 8. Bxf3 cxd4 9. cxd4 Rc8 10. Be3 Nb4 11. Qa4+ Nc6 12. d5 Qa5 13. Qxa5 Nxa5 14. Bxa7 Nc4 15. Bd4 e5 16. Bc3 Be7 17. a4 Nb6 18. a5 Nbd7 19. Nd2 Nc5 20. Ra3 0-0 21. b4 Na6 22. Be2 Rc7 23. f3 Rfc8 24. Nb1 g5 25. Bb5 Nb8 26. Bd3 Nfd7 27. Bb2 Na6 28. Bxa6 bxa6 29. Rc3 Rxc3 30. Nxc3 Kf8 31. Ra1 Ke8 32. Kf1 Kd8 33. Ke2 Rc4 34. Ra4 Kc8 35. Kd2 Kb7 36. Ba3 Rc8 37. Kd3 h6 1-0

[Event "Merida op1"]
[Site "Merida"]
[Date "1996.??.??"]
[Round "2"]
[White "Preve, Alejandro"]
[Black "Alayola Montanez, Jose Enrique"]
[Result "1-0"]
[ECO "A72"]
[BlackElo "2215"]
[PlyCount "81"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bg5 Bg7 8. Be2 h6 9. Bh4 0-0 10. Nf3 a6 11. a4 Nbd7 12. Nd2 Rb8 13. 0-0 Re8 14. f3 Qc7 15. Rc1 Nh7 16. Bg3 Ne5 17. f4 Nd7 18. Bd3 b5 19. axb5 Bxc3 20. bxc3 axb5 21. c4 Ba6 22. cxb5 Bxb5 23. Bxb5 Rxb5 24. f5 Nhf6 25. fxg6 fxg6 26. Qc2 Kg7 27. Rce1 Ne5 28. Nf3 Nfd7 29. Nd4 Qb6 30. Nxb5 Qxb5 31. Bxe5+ Nxe5 32. Qf2 Qd7 33. Qf6+ Kh7 34. Ra1 Qe7 35. Ra6 Qxf6 36. Rxf6 Nc4 37. Ra7+ Kh8 38. Re6 Rxe6 39. dxe6 Kg8 40. Ra8+ Kg7 41. e7 1-0

[Event "Mercedes"]
[Site "Mercedes"]
[Date "1969.??.??"]
[Round "?"]
[White "Carrancio, J."]
[Black "Preve, Alejandro"]
[Result "1/2-1/2"]
[ECO "D04"]
[PlyCount "49"]
[EventDate "1969.??.??"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Nbd2 c6 4. e3 Bf5 5. Be2 e6 6. c3 Nbd7 7. Nh4 Ne4 8. Nxf5 exf5 9. 0-0 Bd6 10. g3 Qe7 11. Nxe4 fxe4 12. a3 Nb6 13. a4 a5 14. Qb3 Qc7 15. Bd2 g6 16. Rfc1 h5 17. c4 dxc4 18. Bxc4 h4 19. Be1 f5 20. Rc2 Nxc4 21. Qxc4 Qf7 22. Rac1 Qxc4 23. Rxc4 Kd7 24. R4c2 Rh5 25. Kf1 1/2-1/2

[Event "Mercedes"]
[Site "Mercedes"]
[Date "1969.??.??"]
[Round "?"]
[White "Olivera, Juan Francisco"]
[Black "Preve, Alejandro"]
[Result "1/2-1/2"]
[ECO "B15"]
[PlyCount "85"]
[EventDate "1969.??.??"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bf5 7. Bd3 Bxd3 8. Qxd3 Bd6 9. Ne2 0-0 10. 0-0 Re8 11. Ng3 Qc7 12. Bd2 Nd7 13. Rfe1 Nf8 14. Re2 Bxg3 15. hxg3 Qb6 16. Be3 Rad8 17. Qc2 Qb5 18. Rae1 Qd5 19. Qa4 a6 20. Qb4 Qb5 21. Qxb5 axb5 22. b3 Ng6 23. c4 bxc4 24. bxc4 h6 25. Kf1 Rd7 26. f3 f5 27. Bf2 Rxe2 28. Kxe2 f6 29. Kd3 Kf7 30. Kc3 Ne7 31. a4 b6 32. Rb1 Nc8 33. Kb4 Ke6 34. Be3 g5 35. Re1 Kd6 36. Rh1 Rh7 37. Rh5 Re7 38. Bc1 Re1 39. Bd2 Re2 40. Kc3 Rxg2 41. Rxh6 Ke7 42. Rh7+ Kd6 43. Rh6 1/2-1/2

[Event "Mercedes"]
[Site "Mercedes"]
[Date "1969.??.??"]
[Round "?"]
[White "Preve, Alejandro"]
[Black "Alvarez, J."]
[Result "0-1"]
[ECO "A84"]
[PlyCount "48"]
[EventDate "1969.??.??"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 f5 2. c4 e6 3. Nf3 Nf6 4. e3 Be7 5. Bd3 0-0 6. 0-0 d5 7. Re1 c6 8. b3 Qe8 9. Ba3 Ne4 10. Bxe7 Qxe7 11. c5 Nd7 12. Qc2 e5 13. Nc3 Nxc3 14. Bxf5 e4 15. Bxh7+ Kxh7 16. a4 g6 17. Nd2 Qh4 18. Nf1 Nf6 19. h3 Bxh3 20. gxh3 Qxh3 21. Qxc3 Ng4 22. Ra2 Rf5 23. Ree2 Nh2 24. f4 Qxf1+ 0-1

[Event "Mercedes"]
[Site "Mercedes"]
[Date "1969.??.??"]
[Round "?"]
[White "Preve, Alejandro"]
[Black "Chaben, A."]
[Result "1/2-1/2"]
[ECO "D56"]
[PlyCount "68"]
[EventDate "1969.??.??"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nc6 4. Nc3 Nf6 5. Bg5 Be7 6. e3 h6 7. Bh4 0-0 8. Be2 a6 9. 0-0 dxc4 10. Bxc4 Nd5 11. Bxd5 exd5 12. Bxe7 Nxe7 13. Qb3 c6 14. Rac1 Rb8 15. Na4 f6 16. Nc5 b6 17. Ne1 Qc7 18. Ne4 Kh8 19. Nc3 Qd6 20. Nd3 a5 21. Ne2 Ba6 22. Qc2 Rfc8 23. Rfe1 Rc7 24. Ndf4 Rbc8 25. Ng6+ Nxg6 26. Qxg6 c5 27. Nc3 b5 28. Qh5 g5 29. dxc5 Qf8 30. Nxd5 Rxc5 31. Rxc5 Rxc5 32. Qd1 Bb7 33. e4 Qd6 34. Nc3 Qe7 1/2-1/2

[Event "Mercedes"]
[Site "Mercedes"]
[Date "1969.??.??"]
[Round "?"]
[White "Preve, Alejandro"]
[Black "Garcia, R."]
[Result "0-1"]
[ECO "E60"]
[PlyCount "76"]
[EventDate "1969.??.??"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. e3 0-0 5. Nc3 d6 6. b3 Nbd7 7. Bb2 e5 8. Be2 Re8 9. Qc2 a6 10. 0-0-0 e4 11. Nd2 Qe7 12. g4 Nb6 13. Rdg1 c6 14. g5 Nfd7 15. Qxe4 Qf8 16. Qf3 d5 17. c5 Nxc5 18. dxc5 Qxc5 19. Ndb1 Nd7 20. Kd2 Ne5 21. Qf4 Bf5 22. Rc1 Rad8 23. Nb5 Nc4+ 24. bxc4 Bxb2 25. cxd5 Rxd5+ 26. Nd4 Bxd4 27. Rxc5 Bxe3+ 28. Kc3 Rxc5+ 29. Qc4 Rxc4+ 30. Bxc4 Bxg5 31. h4 Bf6+ 32. Kb4 Bd4 33. h5 b5 34. hxg6 hxg6 35. Bb3 a5+ 36. Ka3 Re2 37. Bd1 b4+ 38. Ka4 Rxa2+ 0-1

[Event "Mercedes"]
[Site "Mercedes"]
[Date "1969.??.??"]
[Round "?"]
[White "Preve, Alejandro"]
[Black "Maiztegui Casas, Lincoln R"]
[Result "0-1"]
[ECO "D09"]
[PlyCount "94"]
[EventDate "1969.??.??"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. g3 f6 6. exf6 Nxf6 7. Bg2 Be6 8. b3 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 Qd7 11. Na3 0-0-0 12. Ng5 Bf5 13. 0-0 h6 14. e4 Bg4 15. f3 hxg5 16. fxg4 Nxg4 17. Nc2 d3 18. h3 dxc2 19. Qxd7+ Rxd7 20. hxg4 Nb4 21. e5 Nd3 22. Be4 c1Q 23. Raxc1 Nxc1 24. Rxc1 Rd2 25. e6 Re8 26. a4 c6 27. Re1 Kc7 28. Bg6 Re7 29. Re3 Kd6 30. Bf7 Kc5 31. Re5+ Kb4 32. Rxg5 Kxb3 33. Rxg7 Kxa4 34. g5 b5 35. c5 b4 36. Rg8 Rb7 37. Be8 Kb5 38. Bg6 b3 39. Rf8 Kxc5 40. Rf1 b2 41. Re1 Kd6 42. Bf5 a5 43. g6 a4 44. Bb1 a3 45. Ba2 c5 46. Kf1 c4 47. Bb1 c3 0-1

[Event "Mercedes"]
[Site "Mercedes"]
[Date "1969.??.??"]
[Round "?"]
[White "Rienzi, MA."]
[Black "Preve, Alejandro"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "67"]
[EventDate "1969.??.??"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bd7 5. Bd3 Qc8 6. h3 e6 7. f4 c5 8. Nf3 Ne7 9. Be3 cxd4 10. Nxd4 Nec6 11. c3 Be7 12. Nd2 0-0 13. h4 b6 14. N2f3 Na6 15. Rc1 Nc5 16. h5 f6 17. Qc2 h6 18. g5 fxg5 19. fxg5 Nxd4 20. Nxd4 Qc7 21. gxh6 Rf7 22. Bg6 Raf8 23. Bxf7+ Rxf7 24. Qg6 Be8 25. Nf3 Bf8 26. hxg7 Bxg7 27. h6 Qd7 28. hxg7 Rxg7 29. Qh6 Qb5 30. Qh8+ Kf7 31. Ng5+ Rxg5 32. Rh7+ Kg6 33. Rh6+ Kf5 34. Qf6+ 1-0

[Event "Mercedes"]
[Site "Mercedes"]
[Date "1969.??.??"]
[Round "?"]
[White "Roselli, D."]
[Black "Preve, Alejandro"]
[Result "0-1"]
[ECO "D11"]
[PlyCount "66"]
[EventDate "1969.??.??"]
[EventType "tourn"]
[EventRounds "8"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 dxc4 4. e3 b5 5. a4 a5 6. Ne5 Nf6 7. b3 Ba6 8. bxc4 b4 9. Be2 Nfd7 10. Nf3 g6 11. Bb2 Bg7 12. Qc2 0-0 13. 0-0 e6 14. Nbd2 c5 15. Nb3 Qc7 16. Qe4 Bb7 17. Qh4 Nc6 18. Rab1 cxd4 19. exd4 h6 20. Bc1 h5 21. Bd3 Ba6 22. Re1 Nb6 23. Bf4 Qc8 24. Be5 Bxc4 25. Bxg7 Kxg7 26. Bxc4 Nxc4 27. Nc5 Nd6 28. Ng5 Nf5 29. Ngxe6+ fxe6 30. Nxe6+ Qxe6 31. Rxe6 Nxh4 32. Rxc6 Rad8 33. g3 Nf3+ 0-1

