[Event "MEX-ch"]
[Site "Mexico City"]
[Date "2002.??.??"]
[Round "2"]
[White "Navarro Segura, Roberto"]
[Black "Porras, Oscar"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2292"]
[PlyCount "57"]
[EventDate "2002.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Bg5 h6 8. Bxf6 Qxf6 9. Qd3 0-0 10. f3 d5 11. exd5 Rd8 12. 0-0-0 Bxc3 13. Qxc3 Qf4+ 14. Kb1 Bf5 15. g3 Qa4 16. Bd3 Nd4 17. Bxf5 Nxf5 18. Qxe5 Nd6 19. Rhe1 Rac8 20. Rd4 Qb5 21. Qf4 a5 22. a4 Qa6 23. Re7 Qf1+ 24. Nc1 Qf2 25. Rd2 Qf1 26. g4 b5 27. g5 hxg5 28. Qxg5 bxa4 29. Ra7 1-0

[Event "MEX-ch"]
[Site "Mexico City"]
[Date "2002.??.??"]
[Round "8"]
[White "Villegas Corona, Rafael"]
[Black "Porras, Oscar"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "55"]
[EventDate "2002.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 Bg5 13. a4 bxa4 14. Rxa4 Rb8 15. Qa1 a5 16. Bc4 Be6 17. 0-0 Bf4 18. b4 Bxh2+ 19. Kxh2 Qh4+ 20. Kg1 Qxe4 21. Qa2 axb4 22. cxb4 Nd4 23. Nxd4 Qxd4 24. Ne7+ Kh8 25. Bxe6 fxe6 26. b5 Qb6 27. Qxe6 Qxb5 28. Ng6+ 1-0

[Event "MEX-ch"]
[Site "Mexico City"]
[Date "2002.??.??"]
[Round "4"]
[White "Zavalza Ramirez, Ivan"]
[Black "Porras, Oscar"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "2220"]
[PlyCount "51"]
[EventDate "2002.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. d3 Be7 8. a3 a5 9. 0-0 Be6 10. b3 0-0 11. Bb2 f5 12. Rc1 e4 13. dxe4 Qxd1 14. Nxd1 Bxb3 15. Nd4 Nxd4 16. Bxd4 Nc4 17. exf5 Bxa3 18. Bd5+ Kh8 19. Rxc4 Bxc4 20. Bxc4 Rxf5 21. Ne3 Rff8 22. f4 c6 23. f5 b5 24. f6 Rxf6 25. Rxf6 bxc4 26. Rxc6 1-0

[Event "Carlos Torre Memorial op 11th"]
[Site "Merida"]
[Date "1998.12.20"]
[Round "6"]
[White "Porras, Oscar"]
[Black "Gonzalez, Rigoberto"]
[Result "0-1"]
[ECO "C64"]
[PlyCount "86"]
[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 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 Qe7 5. c3 a6 6. Bxc6 dxc6 7. Nxe5 Be6 8. d4 0-0-0 9. Qa4 Bb6 10. Be3 Nh6 11. Na3 f6 12. Nxc6 bxc6 13. Qxc6 Kb8 14. d5 Bd7 15. Qc4 Bc8 16. Nc2 Ng4 17. Bxb6 cxb6 18. Nb4 Bb7 19. Nxa6+ Bxa6 20. Qxa6 Qd6 21. g3 Rd7 22. a4 Ra7 23. Qb5 Ra5 24. Qe2 h5 25. b4 Ra7 26. Rfb1 f5 27. c4 h4 28. c5 Qe5 29. cxb6 Rb7 30. f4 Qd4+ 31. Kf1 hxg3 32. Rd1 g2+ 33. Qxg2 Ne3+ 34. Ke2 Qxd1+ 35. Rxd1 Nxg2 36. Kf3 Nh4+ 37. Ke3 fxe4 38. Kxe4 Re8+ 39. Kd4 Rxb6 40. Kc5 Kb7 41. a5 Rc8+ 42. Kd4 Rxb4+ 43. Ke5 Re8+ 0-1

