[Event "IBM"]
[Site "Amsterdam"]
[Date "1974.07.23"]
[Round "7"]
[White "Donner, Jan Hein"]
[Black "Csom, Istvan"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. e4 e5 9. d5 Ne7 10. Nd2 h6 11. h4 Bd7 12. a4 Qa5 13. Ra3 O-O-O 14. Nf1 Rdf8 15. Bd2 g6 16. Ne3 Ne8 17. h5 f5 18. hxg6 f4 19. Nf5 Nxf5 20. exf5 Ng7 21. g3 Bxf5 22. Bxf5+ Rxf5 23. gxf4 exf4 24. Rh4 Qd8 25. Rxf4 Re8+ 26. Kf1 Rxf4 27. Bxf4 Qh4 28. Qf3 Rf8 29. Bg3 Qxc4+ 30. Qe2 Qxd5 31. Qg4+ Rf5 32. c4 Qe6 33. Qh4 Rh5 34. Qf4 Qxg6 35. Qxd6 Qxd6 36. Bxd6 b6 37. Rg3 Nf5 38. Rg8+ Kb7 39. Bb8 Rh4 40. f4 Ne3+ 41. Kf2 Nxc4 42. Kg3 Rh5 43. Kf3 Rd5 44. Rf8 a6 45. f5 Nd6 46. f6 Rf5+ 47. Ke3 Kc6 48. Bxd6 Kxd6 49. f7 Ke7 50. Rb8 Kxf7 51. Rxb6 Rf6 52. Rb7+ Kg6 53. Rc7 Kg5 54. Rxc5+ Rf5 55. Rc6 Ra5 56. Rc4 Rf5 57. Rc6 a5 58. Rc1 h5 59. Rg1+ Kf6 60. Rh1 Kg6 61. Rg1+ Kf7 62. Rb1 Kf6 63. Rh1 Rc5 64. Kf3 Kg5 65. Rb1 Rf5+ 66. Kg3 Re5 67. Rd1 h4+ 68. Kh3 Re3+ 69. Kh2 Kf4 70. Rf1+ Ke5 71. Rg1 Kf5 72. Rf1+ Ke4 73. Rg1 Kd4 74. Rg4+ Re4 75. Rg5 Re5 76. Rg4+ Kc3 77. Rxh4 Rg5 78. Rf4 Kb3 79. Re4 Rg6 80. Kh1 Rb6 81. Kg2 Rb4 82. Re5 Rxa4 83. Kf2 Ra1 84. Ke2 a4 85. Kd3 Rd1+ 86. Ke2 Rd4 87. Rb5+ Kc4 88. Ra5 Kb4 89. Ra8 a3 90. Ke3 Rd5 0-1