[Event "IBM"]
[Site "Amsterdam"]
[Date "1965.??.??"]
[Round "9"]
[White "Barendregt, Johan"]
[Black "Zuidema, Coen"]
[Result "0-1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 6. h3 h5 7. d3 Qf6 8. Nbd2 Ne7 9. Re1 Ng6 10. d4 Bd6 11. hxg4 hxg4 12. Nh2 Rxh2 13. Qxg4 Qh4 14. Qxh4 Rxh4 15. Nf3 Rh5 16. dxe5 Nxe5 17. Nxe5 Bxe5 18. c3 O-O-O 19. Be3 g5 20. Kf1 g4 21. Ke2 Rh2 22. Rg1 Re8 23. f4 gxf3+ 24. Kxf3 Rg8 25. Bf2 Rh6 26. Raf1 Bh2 27. Rh1 Rf6+ 28. Ke3 Rxg2 29. Bh4 Rh6 30. Bf6 c5 31. e5 Kd7 32. Kf3 Rxb2 33. Bg5 Rg6 34. Bf4 Bxf4 35. Kxf4 Rgg2 36. Ke4 Rgf2 37. Kd5 Rxa2 38. Kxc5 Ra5+ 39. Kd4 Ra4+ 40. c4 Rxf1 41. Rxf1 Ke7 42. Kd5 c6+ 43. Kc5 b5 44. cxb5 cxb5 45. Rf6 Ra1 46. Rb6 Ra5 47. Kd4 Ra4+ 48. Kd5 b4 49. Rb7+ Kf8 50. Kc4 Ra5 51. Kxb4 Rxe5 52. Ra7 Rb5+ 53. Kc4 Ra5 54. Kd4 Kg7 55. Ke4 Kg6 56. Ra8 Ra4+ 57. Ke5 Ra5+ 58. Ke4 Kf6 59. Ra7 Ke6 60. Ra8 Ra4+ 61. Kf3 Kf5 62. Rh8 Ra3+ 63. Kf2 Kf4 64. Rh4+ Kg5 65. Rc4 f5 66. Rd4 f4 67. Rd8 a5 68. Rg8+ Kf5 69. Rf8+ Ke4 70. Re8+ Kd3 71. Kf3 Ra4 72. Ra8 Kc3 73. Ra7 Kb3 74. Ra8 Kc2 75. Ra7 Kc3 76. Ra8 Kd3 77. Ra7 Ra1 78. Kxf4 a4 79. Kf3 a3 80. Ra8 Kc3 81. Rc8+ Kb3 82. Rb8+ Ka2 83. Ke2 Rb1 84. Rc8 Rb5 85. Kd2 Kb3 86. Rc3+ Kb4 87. Rc1 a2 88. Ra1 Kb3 0-1