[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "15"]
[White "Kotov, Alexander"]
[Black "Kavalek, Lubomir"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 c6 6. Be3 a6 7. Bd3 b5 8. Nge2 O-O 9. O-O e5 10. Qe1 b4 11. Na4 exd4 12. Bxd4 c5 13. Be3 Nc6 14. Rd1 Ne5 15. b3 Bd7 16. Nb2 Ne8 17. Qd2 Qe7 18. Bb1 Bc6 19. Nd3 Nxd3 20. Qxd3 a5 21. Bf4 Be5 22. Bg3 Bxg3 23. Nxg3 Rd8 24. f4 Nf6 25. Rde1 h5 26. Qc2 Rde8 27. e5 dxe5 28. Rxe5 Qd6 29. Rd1 Qc7 30. Rde1 h4 31. Nf1 Ng4 32. Rxe8 Rxe8 33. Rxe8+ Bxe8 34. h3 Nf6 35. Qf2 Nh5 36. f5 Qe7 37. Ne3 Qe5 38. Ng4 Qa1 39. Qe1 Qd4+ 40. Kh1 Kf8 41. fxg6 fxg6 42. Qf2+ Qxf2 43. Nxf2 Ng3+ 44. Kh2 Ke7 45. Nd3 Kd6 46. Ne1 Ne2 47. Nf3 Nc3 48. Bc2 Nxa2 49. Nxh4 Nc1 50. Nf3 a4 51. bxa4 b3 52. Bb1 Ne2 53. Nd2 Nc3 54. Bd3 b2 55. a5 g5 56. g3 Kc7 57. g4 Kb7 58. Kg3 Ka6 59. Nb3 Ne2+ 60. Kf2 Nf4 61. Bb1 Bg6 62. Nxc5+ Kxa5 63. Ne4 Bxe4 64. Bxe4 Kb4 65. h4 Kxc4 66. Ke3 Nd5+ 67. Kf3 gxh4 68. g5 Kd4 69. g6 Nf6 70. Bb1 Ke5 71. Kg2 Kf4 72. Kh3 Kg5 73. g7 Ng8 74. Bc2 Ne7 75. Bb1 Kh5 76. Bc2 Kh6 77. Kxh4 Kxg7 78. Kg5 Nd5 79. Bb1 Nc3 80. Bc2 Ne2 81. Bb1 Nc3 82. Bc2 Nb5 83. Bb1 Na3 1/2-1/2