[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "3"]
[White "Balam Maldonado, Ethel"]
[Black "Cardena, Alejandro"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "29"]
[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 d6 3. d4 Nf6 4. Nc3 Nc6 5. dxe5 Ng4 6. Bb5 Bd7 7. Bf4 d5 8. exd5 Bc5 9. Qd2 a6 10. dxc6 bxc6 11. Bc4 Bxf2+ 12. Kf1 Qb8 13. Rd1 Qb6 14. Qxd7+ Kf8 15. Qxf7# 1-0

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "5"]
[White "Cardena, Alejandro"]
[Black "Pina, Raul"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "85"]
[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. e3 d5 2. d4 e6 3. Nf3 f6 4. Nc3 Nc6 5. Nb5 a6 6. Nc3 e5 7. dxe5 fxe5 8. Qxd5 Qxd5 9. Nxd5 e4 10. Ng5 Nf6 11. Nxc7+ Kd8 12. Nxa8 h6 13. Nf7+ Ke8 14. Nxh8 Bb4+ 15. c3 Bc5 16. Bc4 Ne5 17. Nc7+ Kd7 18. b4 Bb6 19. f4 Nxc4 20. Na8 Bd8 21. Nf7 Be7 22. a4 Ke8 23. 0-0 Kxf7 24. a5 b5 25. Nc7 Bd6 26. Nxb5 axb5 27. a6 Be6 28. a7 Nb6 29. Ra6 Bd5 30. Rxb6 Bc7 31. Ra6 Bb7 32. Ra2 Ng4 33. Rd2 Bb6 34. Rd7+ Ke8 35. Rxb7 Nxe3 36. Rxb6 Nxf1 37. a8Q+ Kf7 38. Qb7+ Kf8 39. Qb8+ Ke7 40. Qd6+ Kf7 41. Rb7+ Kg8 42. Qg6 Kh8 43. Qxg7# 1-0

[Event "Merida op"]
[Site "Merida"]
[Date "1997.??.??"]
[Round "4"]
[White "Oliva, Jorge"]
[Black "Cardena, Alejandro"]
[Result "1-0"]
[ECO "A40"]
[PlyCount "97"]
[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 e6 2. Nf3 Bb4+ 3. c3 Bd6 4. Bg5 f6 5. Bh4 Nc6 6. e3 Nh6 7. Bd3 Nf5 8. Qc2 Nxh4 9. Nxh4 g5 10. Nf3 g4 11. Nfd2 f5 12. e4 f4 13. e5 Be7 14. Bxh7 Rxh7 15. Qxh7 d6 16. Qg8+ Kd7 17. Qxd8+ Bxd8 18. exd6 cxd6 19. h3 g3 20. fxg3 fxg3 21. Ne4 b5 22. Nbd2 b4 23. 0-0 Ba6 24. Rf7+ Be7 25. Nxg3 Rg8 26. Nh5 Rf8 27. Rxf8 Bxf8 28. Re1 bxc3 29. bxc3 Bh6 30. Nf3 e5 31. dxe5 dxe5 32. Nxe5+ Kd6 33. Nxc6 Kxc6 34. Re6+ Kb5 35. Rxh6 Bb7 36. g4 a5 37. g5 a4 38. g6 a3 39. g7 Kc4 40. g8Q+ Bd5 41. Rc6+ Kd3 42. Qxd5+ Kc2 43. Qb3+ Kd3 44. Rd6+ Ke3 45. Qb6+ Ke2 46. Nf4+ Kf3 47. Qc6+ Kxf4 48. Rd4+ Ke3 49. Qe4# 1-0

