[Event "Carlos Torre op Kukulkan 11th"]
[Site "Merida"]
[Date "1998.??.??"]
[Round "2"]
[White "Leon, Hector"]
[Black "Moreno, Antonio"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "72"]
[EventDate "1998.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Bg5 c6 6. Qd2 h6 7. Bxf6 exf6 8. 0-0-0 0-0 9. Kb1 Bg4 10. h3 Bxf3 11. gxf3 Nd7 12. Bc4 Nb6 13. Bb3 Qd7 14. h4 f5 15. Rdg1 Kh7 16. f4 fxe4 17. h5 d5 18. hxg6+ fxg6 19. Qe3 Qf5 20. Ne2 Rf6 21. Rg5 Qd7 22. c3 Raf8 23. f3 exf3 24. Qxf3 Rf5 25. Qg3 Qe6 26. Bc2 Rxg5 27. Qxg5 Nc4 28. Ng3 Re8 29. f5 Qe1+ 30. Rxe1 Rxe1+ 31. Bd1 hxg5 32. fxg6+ Kxg6 33. Kc1 Nxb2 34. Kxb2 Rxd1 35. Kc2 Ra1 36. Kb2 Rg1 0-1

[Event "Carlos Torre op Kukulkan 11th"]
[Site "Merida"]
[Date "1998.??.??"]
[Round "8"]
[White "Leon, Hector"]
[Black "Salas, Julian"]
[Result "1/2-1/2"]
[ECO "B12"]
[PlyCount "116"]
[EventDate "1998.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bg6 5. f4 e6 6. Nf3 Qb6 7. Nbd2 c5 8. c3 Nc6 9. a4 0-0-0 10. Bb5 a6 11. Bxc6 Qxc6 12. b4 cxb4 13. cxb4 Bxb4 14. Bb2 Bc2 15. Qe2 Kb8 16. 0-0 Bxa4 17. Rfc1 Qd7 18. Ba3 Bxa3 19. Rxa3 Bb5 20. Qe1 Ne7 21. Nb3 b6 22. Nfd2 Rc8 23. Rca1 Ka7 24. Nb1 Qc6 25. N1d2 Qc3 26. Qh4 Qe3+ 27. Qf2 Rc3 28. Qxe3 Rxe3 29. Rc1 Rc8 30. Rxc8 Nxc8 31. Ra1 Rc3 32. Rc1 Rxc1+ 33. Nxc1 Bc4 34. Kf2 a5 35. Ke1 b5 36. Kd1 b4 37. Kc2 a4 38. Kb2 Ka6 39. f5 Ne7 40. f6 gxf6 41. exf6 Ng6 42. g5 Nh4 43. h3 Ka5 44. Nxc4+ dxc4 45. Ne2 Nf3 46. g6 hxg6 47. Nf4 Nxd4 48. Nxg6 Nf5 49. Ne5 c3+ 50. Kb1 Nh6 51. h4 Kb5 52. h5 b3 53. Nd3 Kc4 54. Ne5+ Kd4 55. Nd7 a3 56. Nb6 Kd3 57. Na4 e5 58. Nb2+ cxb2 1/2-1/2

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "3"]
[White "Ancheyta Tejas, Claudinelly"]
[Black "Leon, Hector"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "40"]
[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 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Bc5 6. Be3 Qb6 7. Nce2 Nf6 8. Nxc6 bxc6 9. Bxc5 Qxc5 10. Qd3 0-0 11. f3 Qa5+ 12. Nc3 d5 13. exd5 cxd5 14. 0-0-0 Bd7 15. g4 Rab8 16. Qa6 Qb4 17. Qa3 Qf4+ 18. Kb1 Qxf3 19. Be2 Qe3 20. Qd6 Qxc3 0-1

[Event "Merida Universiada"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "?"]
[White "Cardena, Manuel"]
[Black "Leon, Hector"]
[Result "1-0"]
[ECO "D06"]
[PlyCount "73"]
[EventDate "1997.??.??"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nb6 5. Nc3 e6 6. Be3 Bb4 7. a3 Be7 8. f4 0-0 9. Nf3 f5 10. Bd3 Bd7 11. d5 exd5 12. exd5 c6 13. dxc6 Bxc6 14. 0-0 N8d7 15. Qb3+ Kh8 16. Nd4 Nc5 17. Qc2 Nxd3 18. Qxd3 a6 19. Rad1 Nd5 20. Ne6 Qa5 21. Nxd5 Bxd5 22. Qxd5 Qxd5 23. Rxd5 Rf6 24. Nd4 Re8 25. Rxf5 Bd8 26. Rxf6 Bxf6 27. Kf2 h6 28. Kf3 g5 29. fxg5 hxg5 30. g4 Bd8 31. Nf5 Kh7 32. Rd1 Kg6 33. Rd6+ Bf6 34. Bd4 Rf8 35. Rxf6+ Rxf6 36. Bxf6 Kxf6 37. Ke4 1-0

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "2"]
[White "Cetina, Enrique"]
[Black "Leon, Hector"]
[Result "1-0"]
[ECO "B31"]
[PlyCount "91"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. d3 Bg7 5. Be3 Bxb2 6. Nbd2 Bxa1 7. Qxa1 Nf6 8. Bxc5 0-0 9. Bxc6 dxc6 10. e5 Nd5 11. Qd4 b6 12. Ba3 c5 13. Qh4 f6 14. exf6 exf6 15. 0-0 Ba6 16. Re1 Rf7 17. d4 cxd4 18. Nxd4 Nc3 19. N2f3 Bb7 20. Bb2 Rc8 21. Re3 Bxf3 22. Bxc3 Ba8 23. Rh3 Qd5 24. Qg4 Qxa2 25. Qxc8+ Rf8 26. Qe6+ Qxe6 27. Nxe6 Re8 28. Re3 Kf7 29. Nc7 Rxe3 30. fxe3 Be4 31. Nb5 a6 32. Na3 b5 33. Bb4 Ke6 34. c4 bxc4 35. Nxc4 Kd5 36. Nd2 f5 37. Kf2 g5 38. Nxe4 Kxe4 39. h3 h5 40. Be7 g4 41. hxg4 hxg4 42. g3 a5 43. Ba3 Kd3 44. Bc5 a4 45. Bd6 Kd2 46. Bb4+ 1-0

[Event "Aniv Fund Prog op"]
[Site "Mexico City"]
[Date "1997.??.??"]
[Round "?"]
[White "Leon, Hector"]
[Black "Aguilar, David"]
[Result "1/2-1/2"]
[ECO "D53"]
[PlyCount "29"]
[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. d4 d5 2. c4 Nf6 3. Nc3 e6 4. Bg5 Be7 5. e3 0-0 6. Nf3 Nc6 7. Rc1 b6 8. Nd2 Bd6 9. Nb5 Qd7 10. Be2 Ne4 11. Nxe4 dxe4 12. Bf4 Bb4+ 13. Nc3 f5 14. 0-0 Ne7 15. Nb5 1/2-1/2

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "1"]
[White "Leon, Hector"]
[Black "Alayola Montanez, Jose Enrique"]
[Result "0-1"]
[ECO "B00"]
[BlackElo "2210"]
[PlyCount "45"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 a6 2. Nf3 b5 3. d4 Bb7 4. e5 e6 5. Bg5 Be7 6. Bxe7 Nxe7 7. Be2 d6 8. 0-0 Nd7 9. Nc3 Ng6 10. Bd3 dxe5 11. dxe5 Ndxe5 12. Be2 Qxd1 13. Rfxd1 Nxf3+ 14. Bxf3 Bxf3 15. gxf3 Ke7 16. Kg2 Rhd8 17. Ne4 Rd5 18. Rxd5 exd5 19. Nc5 Kd6 20. Nd3 Re8 21. Re1 Rxe1 22. Nxe1 c5 23. h3 0-1

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "5"]
[White "Leon, Hector"]
[Black "Balam, Hugo"]
[Result "0-1"]
[ECO "D52"]
[PlyCount "72"]
[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. Nf3 e6 3. Bg5 d5 4. c4 c6 5. Nc3 Bd6 6. e3 Nbd7 7. Bd3 Qb6 8. Rb1 Bb4 9. c5 Qa5 10. 0-0 Bxc3 11. bxc3 Qxc3 12. Rb3 Qa5 13. Bb1 0-0 14. Nh4 h6 15. Bxf6 Nxf6 16. f4 b6 17. Qc2 Bd7 18. g4 Ne4 19. Rb2 bxc5 20. dxc5 Rfb8 21. Rxb8+ Rxb8 22. Nf3 Qa3 23. Re1 Rb2 24. Qd3 Qxc5 25. g5 h5 26. Re2 Rxe2 27. Qxe2 Nc3 28. Qd3 Nxb1 29. Qxb1 Qxe3+ 30. Kg2 Qb6 31. Qa1 Bc8 32. Kg3 c5 33. a4 a5 34. Qe5 Qc6 35. Nh4 c4 36. g6 f5 0-1

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "2"]
[White "Leon, Hector"]
[Black "Bojorquez, Jose"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "67"]
[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 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 d6 5. d5 Nd4 6. Nxd4 exd4 7. Qxd4 c5 8. Qd3 Bg4 9. Bg5 Qd7 10. Bxf6 gxf6 11. h3 Bh5 12. g4 Bg6 13. Qf3 Bg7 14. Bb5 0-0-0 15. Bxd7+ Rxd7 16. Nb5 Kb8 17. 0-0 Re8 18. Rfe1 a6 19. Nc3 b5 20. a4 b4 21. Na2 Re5 22. b3 h5 23. Qe2 Rxe4 24. Qxa6 Rb7 25. Qxd6+ Ka7 26. Qxc5+ Rb6 27. Rxe4 Bxe4 28. Nxb4 Kb7 29. a5 Rd6 30. Nc6 Rxc6 31. dxc6+ Bxc6 32. a6+ Ka8 33. Qb6 Bd5 34. a7 1-0

[Event "Merida Universiada"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "?"]
[White "Leon, Hector"]
[Black "Castillo, Marcos"]
[Result "1-0"]
[ECO "B06"]
[PlyCount "83"]
[EventDate "1997.??.??"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 e6 2. e4 g6 3. Nf3 Bg7 4. e5 b6 5. Bg5 f6 6. Bh4 Bb7 7. Be2 Qe7 8. Nc3 a5 9. 0-0 Nc6 10. a4 Nh6 11. Nb5 Rc8 12. Bc4 Nf5 13. d5 Nxh4 14. Nxh4 Nxe5 15. d6 Qf7 16. Nxc7+ Kf8 17. Ba2 g5 18. Nf5 Nc6 19. f4 Qg6 20. Nd4 gxf4 21. Ndxe6+ dxe6 22. Nxe6+ Ke8 23. d7+ Ke7 24. Nxf4 Qg5 25. dxc8Q Rxc8 26. Re1+ Ne5 27. Nd5+ Kf8 28. Re2 Nf3+ 29. Kh1 Rd8 30. gxf3 Rxd5 31. Bxd5 Bxd5 32. Rg2 Qf5 33. Ra3 h5 34. Rd3 Bc6 35. Rd8+ Kf7 36. Qd3 Qxd3 37. cxd3 Bxf3 38. Rd7+ Kg8 39. Rdxg7+ Kh8 40. Kg1 h4 41. Rg8+ Kh7 42. R2g7+ 1-0

[Event "Merida Universiada"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "?"]
[White "Leon, Hector"]
[Black "Chable, Roberto"]
[Result "1-0"]
[ECO "D30"]
[PlyCount "107"]
[EventDate "1997.??.??"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 h6 5. Bh4 Nbd7 6. c5 g5 7. Bg3 Ne4 8. e3 Nxg3 9. fxg3 Bg7 10. Bd3 e5 11. 0-0 e4 12. Bc2 exf3 13. Qxf3 Nf6 14. Nc3 Be6 15. Bb3 0-0 16. h3 Re8 17. Rae1 c6 18. g4 Ne4 19. Nxe4 dxe4 20. Qf2 Bxb3 21. axb3 Qd5 22. Qc2 Rad8 23. Rf5 Qd7 24. Ref1 Re7 25. R1f2 Rf8 26. Qc4 Qe6 27. Qxe6 Rxe6 28. b4 f6 29. g3 Ra8 30. b3 Re7 31. Kg2 Rd7 32. Rf1 Rd5 33. R1f2 Rxf5 34. gxf5 Bf8 35. g4 Kf7 36. Kg3 Ke8 37. Rf1 b6 38. Rc1 bxc5 39. bxc5 Rb8 40. Rb1 a5 41. Kf2 Rb4 42. Ra1 Rxb3 43. Rxa5 Rb7 44. Ra6 Rc7 45. Ke2 Kd7 46. Kd2 Be7 47. Kc3 Bd8 48. Kc4 Rc8 49. Ra7+ Rc7 50. Ra8 Rc8 51. Ra4 Rc7 52. Ra2 Rc8 53. Rb2 Rc7 54. Rb1 1-0

[Event "Aniv Fund Prog op"]
[Site "Mexico City"]
[Date "1997.??.??"]
[Round "?"]
[White "Leon, Hector"]
[Black "Esquivel, Jorge"]
[Result "0-1"]
[ECO "B00"]
[PlyCount "48"]
[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. d4 b6 2. e4 Bb7 3. d5 Nf6 4. Nc3 c6 5. e5 Nxd5 6. Nxd5 cxd5 7. Nf3 e6 8. Be2 d6 9. 0-0 Nd7 10. Bg5 Be7 11. Bxe7 Qxe7 12. exd6 Qxd6 13. Re1 0-0 14. Bd3 f5 15. Ng5 Rae8 16. Qh5 Nf6 17. Qh3 h6 18. Nf3 Nd7 19. Nh4 Nc5 20. Nxf5 exf5 21. Rxe8 Rxe8 22. Bxf5 Qe5 23. f3 Qe3+ 24. Kh1 Qe1+ 0-1

[Event "Merida Universiada"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "?"]
[White "Leon, Hector"]
[Black "Pech, Jose"]
[Result "0-1"]
[ECO "D60"]
[PlyCount "92"]
[EventDate "1997.??.??"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. e3 0-0 6. Nc3 Nbd7 7. Bd3 dxc4 8. Bxc4 c6 9. Bd3 Nd5 10. Bxe7 Qxe7 11. Qc2 h6 12. 0-0 e5 13. Rae1 Kh8 14. Nd2 Nb4 15. Qb1 Nxd3 16. Qxd3 a5 17. f4 exd4 18. Qxd4 Nf6 19. e4 Rd8 20. Qe3 Ng4 21. Qe2 b6 22. f5 h5 23. h3 Ba6 24. Qd1 Qc5+ 25. Kh1 Nf2+ 26. Rxf2 Qxf2 27. Qxh5+ Kg8 28. Nf3 Bf1 29. Qg4 Rd2 30. Nxd2 Qxe1 31. Nxf1 Qxf1+ 32. Kh2 f6 33. Ne2 Rd8 34. Nf4 Qc1 35. Ne6 Rd7 36. h4 Qxb2 37. h5 Qe5+ 38. g3 Qa1 39. Qe2 Qd1 40. Qxd1 Rxd1 41. g4 Re1 42. g5 Rxe4 43. gxf6 gxf6 44. Kg3 c5 45. h6 Kh7 46. Kf3 Re5 0-1

[Event "Aniv Fund Prog op"]
[Site "Mexico City"]
[Date "1997.??.??"]
[Round "?"]
[White "Leon, Hector"]
[Black "Quijano Xacur, Oscar"]
[Result "1/2-1/2"]
[ECO "A44"]
[PlyCount "66"]
[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. d4 c5 2. d5 e5 3. dxe6 fxe6 4. e4 d5 5. e5 Nc6 6. Bf4 Bd7 7. Bd3 Qb6 8. b3 g6 9. Nf3 Nge7 10. 0-0 Bg7 11. Re1 0-0-0 12. Nbd2 d4 13. a4 h6 14. Nc4 Qb4 15. Nd6+ Kb8 16. Bd2 Qb6 17. a5 Qc7 18. a6 b6 19. Nf7 Rdf8 20. Nxh8 Bxh8 21. Bxh6 Rf7 22. g3 Nxe5 23. Nxe5 Bxe5 24. Rxe5 Qxe5 25. Bf4 Rxf4 26. gxf4 Qxf4 27. Qf1 Bc6 28. Qh3 Nf5 29. Bxf5 Qxf5 30. Qg3+ Kc8 31. Rf1 Qxc2 32. Qd6 Qe4 33. Qf8+ Kd7 1/2-1/2

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "4"]
[White "Manzur, Carlos"]
[Black "Leon, Hector"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "45"]
[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 e6 3. d4 cxd4 4. Nxd4 Bc5 5. Nc3 Qb6 6. Be3 Qxb2 7. Ncb5 Bxd4 8. Bxd4 Qb4+ 9. c3 Qa5 10. Bxg7 Na6 11. Bxh8 Nc7 12. Nd6+ Ke7 13. Qd4 Qb6 14. Qxb6 axb6 15. Nxc8+ Rxc8 16. Bd4 f6 17. 0-0-0 b5 18. Bc5+ d6 19. Bxd6+ Kf7 20. Bxc7 Rxc7 21. Kb2 Ne7 22. Bxb5 h5 23. Rd7 1-0

[Event "Aniv Fund Prog op"]
[Site "Mexico City"]
[Date "1997.??.??"]
[Round "?"]
[White "Perez, Jose Roberto"]
[Black "Leon, Hector"]
[Result "1/2-1/2"]
[ECO "D06"]
[PlyCount "81"]
[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. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nb6 5. Nf3 Bg4 6. Be2 e6 7. Nc3 Be7 8. Bf4 0-0 9. Rc1 c5 10. Nb5 Na6 11. 0-0 Bxf3 12. Bxf3 cxd4 13. Qxd4 Qxd4 14. Nxd4 Bc5 15. Nb5 Nd7 16. Rfd1 Rad8 17. e5 Nb4 18. a3 Nc6 19. b4 Bb6 20. Nd6 Ndxe5 21. Bxc6 Nxc6 22. Nxb7 Rxd1+ 23. Rxd1 e5 24. Be3 Bxe3 25. fxe3 f6 26. Rd7 Rf7 27. Rxf7 Kxf7 28. b5 Nb8 29. a4 Ke6 30. e4 Kd7 31. Kf2 Kc7 32. Nc5 Kb6 33. Nb3 Nd7 34. Ke3 Nc5 35. Nxc5 Kxc5 36. Kd3 Kb4 37. g4 Kxa4 38. Kc4 Ka5 39. Kc5 h6 40. h4 g6 41. h5 1/2-1/2

[Event "Merida Universiada"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "?"]
[White "Preve, Carlos"]
[Black "Leon, Hector"]
[Result "0-1"]
[ECO "B45"]
[PlyCount "76"]
[EventDate "1997.??.??"]
[EventType "team"]
[EventRounds "5"]
[EventCountry "MEX"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 Nf6 4. Nc3 Nc6 5. Bg5 cxd4 6. Nxd4 Bc5 7. Nf3 Qb6 8. Qd2 Ng4 9. Nd1 0-0 10. h3 Nge5 11. Nxe5 Nxe5 12. Be2 d6 13. Rb1 a5 14. a4 Bd7 15. b3 Bc6 16. Qf4 f5 17. exf5 Rxf5 18. Qg3 Raf8 19. 0-0 Ng6 20. Bc4 d5 21. Bd3 R5f7 22. h4 Bxa4 23. Be3 Bxe3 24. Nxe3 Bb5 25. Bxb5 Qxb5 26. h5 Nf4 27. Kh2 Nxh5 28. Qh4 g6 29. Ng4 Rf4 30. Qe7 Qe2 31. Rbe1 Qxg4 32. Rxe6 Qh4+ 33. Qxh4 Rxh4+ 34. Kg1 Nf4 35. Re7 g5 36. g3 Rg4 37. Kh2 Nh5 38. Re5 Nxg3 0-1

[Event "Merida op2"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "1"]
[White "Romero, Ricardo"]
[Black "Leon, Hector"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "2265"]
[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. e4 c5 2. d4 cxd4 3. c3 e5 4. Nf3 Nc6 5. Bc4 Nf6 6. cxd4 d5 7. dxe5 dxc4 8. Qxd8+ Nxd8 9. exf6 gxf6 10. 0-0 Bg7 11. Nc3 0-0 12. Nd5 Ne6 13. Bd2 b5 14. Bc3 Bb7 15. Bxf6 Bxf6 16. Nxf6+ Kg7 17. Nh5+ Kh6 18. Ng3 f6 19. Rad1 Rab8 20. Rd7 Rfd8 21. Nf5+ Kg6 22. N3h4+ Kg5 23. Nf3+ Kg6 24. Re7 Ng5 25. N3h4+ Kh5 26. h3 Nxh3+ 27. gxh3 Rg8+ 28. Kh2 Rh8 29. Rg1 Ba8 30. Ng7+ Kxh4 31. Rg4# 1-0

