[Event "Mar del Plata op"]
[Site "Mar del Plata ARG"]
[Date "1991.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Carlomagno Oblitas"]
[Black "Ivan Boere Souza"]
[ECO "A77"]
[WhiteElo "2350"]
[BlackElo "2290"]
[PlyCount "154"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Be2  O-O 9. Nd2 Re8 10. O-O a6 11. a4 Nbd7 12. Qc2 Qc7 13. f4 Rb8 14. a5 b5 15. axb6  Rxb6 16. Kh1 h5 17. Ra2 Rb4 18. h3 h4 19. Nc4 Nb6 20. Nxb6 Qxb6 21. Bf3 Nxe4  22. Bxe4 Bxc3 23. Bxg6 Bf6 24. Bh7+ Kh8 25. Bd3 c4 26. Bxc4 Qd4 27. b3 Qe4 28.  Bd2 Qxc2 29. Rxc2 Rb8 30. Bc3 Bxc3 31. Rxc3 Kg7 32. Kg1 Kf6 33. Rc2 Re3 34. Ra2  Rg3 35. Kh2 Bb7 36. Ra4 Rbg8 37. Rf2 Rc3 38. Rb4 Bc8 39. Rb6 Rd8 40. Rb2 Kf5  41. Bxa6 Bxa6 42. Rxa6 Kxf4 43. Rf2+ Ke5 44. Rxf7 Rc2 45. Rg7 Kxd5 46. Ra4 Rh8  47. Rg5+ Ke6 48. Re4+ Kf6 49. Rd5 Rg8 50. Rxd6+ Kf5 51. Rg4 Rxg4 52. hxg4+ Kxg4  53. Rd4+ Kg5 54. Rb4 Rd2 55. Rb7 Rc2 56. Rb4 Rd2 57. Kg1 Rc2 58. Kf1 Rb2 59.  Kg1 Rc2 60. Rb7 Rb2 61. Rb6 Kg4 62. Kh2 Rd2 63. Rg6+ Kf5 64. Rg8 Re2 65. Rg7  Rd2 66. Rg8 Rc2 67. Kh3 Rc3+ 68. Kxh4 Rxb3 69. Kh5 Kf6 70. Kh6 Kf7 71. Rg7+ Kf8  72. Rg5 Rb1 73. g4 Rh1+ 74. Kg6 Rb1 75. Kf6 Ra1 76. Kg6 Kg8 77. Rf5 Rb1 1/2-1/2