[Event "Buenos Aires Club Argentino"]
[Site "Buenos Aires"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Ricardo Grinberg"]
[Black "De la Vega, Hector"]
[ECO "B53"]
[WhiteElo "2460"]
[BlackElo "2360"]
[PlyCount "156"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 a6 5. c4 Nc6 6. Qd2 g6 7. Nc3 Bg7 8. b3  Nf6 9. Bb2 O-O 10. h3 Qa5 11. Bd3 Qh5 12. Be2 Qa5 13. Bd3 Qh5 14. Ne2 Nd7 15.  Bxg7 Kxg7 16. O-O Nde5 17. Nxe5 Qxe5 18. f4 Qc5+ 19. Kh2 Bd7 20. Rae1 b5 21.  Rc1 b4 22. f5 a5 23. Rf4 f6 24. Rg4 Ne5 25. Rg3 Qf2 26. Rc2 g5 27. Nf4 Qxd2 28.  Rxd2 Kf7 29. Nd5 Bc6 30. Be2 Bxd5 31. Bh5+ Kg7 32. exd5 Rfc8 33. Bd1 a4 34. Kg1  axb3 35. axb3 Ra1 36. Kf2 Rca8 37. Re3 Rc1 38. Ke2 Raa1 39. Re4 Kf7 40. Re3 Nd7  41. Rd4 Nc5 42. Rd2 Rc3 43. Rxc3 bxc3 44. Rc2 Nxb3 45. Rxc3 Nd4+ 46. Kd2 Ra2+  47. Kd3 Nxf5 48. g4 Ng7 49. Bb3 Rh2 50. Ke4 f5+ 51. gxf5 Kf6 52. Bd1 Rh1 53.  Be2 Rh2 54. Bd1 Rf2 55. c5 Rf4+ 56. Kd3 dxc5 57. Rxc5 Rh4 58. Rc6+ Ke5 59. Bg4  Kxd5 60. f6 exf6 61. Rxf6 h6 62. Rf7 Nh5 63. Rf5+ Kd6 64. Bxh5 Rxh5 65. Rf3 Rh4  66. Re3 Kd5 67. Ke2 Rf4 68. Ra3 Ke5 69. Ra6 Rf6 70. Rxf6 Kxf6 71. Kf3 h5 72.  Kf2 Ke6 73. Ke2 Kd6 74. Kd2 Kc6 75. Ke3 Kd6 76. Kd2 Kc5 77. Ke3 Kd5 78. Kd3  1/2-1/2