[Event "Mar del Plata op"]
[Site "Mar del Plata"]
[Date "1992.??.??"]
[Round "3"]
[White "Rivero, J."]
[Black "Gauna, Marcelo Oscar"]
[Result "1-0"]
[ECO "A58"]
[PlyCount "85"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. d4 c5 7. d5 b5 8. cxb5 a6 9. bxa6 Bxa6 10. Nc3 Nbd7 11. Re1 Qc7 12. Qc2 Rfb8 13. h3 Nb6 14. e4 Nfd7 15. Bf1 Bxf1 16. Kxf1 Nc4 17. Kg2 Qb6 18. Re2 Qb4 19. Nd1 Rb7 20. Ne1 Na5 21. Bd2 Qc4 22. Bxa5 Qxc2 23. Rxc2 Rxa5 24. Nf3 Rab5 25. Rb1 Ra5 26. b3 Rb4 27. Nd2 Ne5 28. Ne3 Rd4 29. Nec4 Nxc4 30. Nxc4 Ra7 31. Re1 Rd3 32. Ree2 Kf8 33. Rcd2 Rxd2 34. Rxd2 Bd4 35. f4 f6 36. Kf3 Kf7 37. Ke2 Bg1 38. Kd3 Ra6 39. e5 dxe5 40. fxe5 fxe5 41. Nxe5+ Kf6 42. Nf3 c4+ 43. Kxc4 1-0

[Event "Mar del Plata op"]
[Site "Mar del Plata"]
[Date "1992.??.??"]
[Round "1"]
[White "Spangenberg, Hugo"]
[Black "Gauna, Marcelo Oscar"]
[Result "1-0"]
[ECO "B95"]
[WhiteElo "2305"]
[PlyCount "69"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 Qc7 9. f4 Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 b4 14. Nce2 e5 15. f6 gxf6 16. Nf5 fxg5 17. Neg3 Nf6 18. Qxb4 Rb8 19. Qa4+ Bd7 20. Qxa6 Nxe4 21. Nxe7 Nf2 22. Nd5 Qc6 23. Qxc6 Bxc6 24. Bg2 Bxd5 25. Bxd5 Nxh1 26. Bxh1 Kd7 27. Bd5 Rhf8 28. Nf5 Rb6 29. c3 g4 30. b4 f6 31. a4 Rc8 32. Kb2 e4 33. a5 Rb5 34. Bxe4 Re5 35. Nxd6 1-0

