[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "6"]
[White "Radulov, Ivan"]
[Black "Spassky, Boris Vasilievich"]
[Result "0-1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c5 6. dxc5 Qa5 7. Qd3 Qxc5 8. Be3 Qa5 9.
Qb5+ Qxb5 10. Bxb5+ Nc6 11. O-O-O a6 12. Bd3 Ng4 13. Bb6 O-O 14. h3 Nf6 15. g4 Nd7 16. Be3
Rb8 17. Ne2 b5 18. Kb1 Bb7 19. Ned4 Nc5 20. Nb3 Na4 21. Bc1 Rfc8 22. c3 Rc7 23. Nfd4 Rbc8
24. Nxc6 Bxc6 25. a3 f5 26. gxf5 gxf5 27. Rhe1 fxe4 28. Bc2 d5 29. Nd4 Bxd4 30. Rxd4 Nb6
31. Rg1+ Kf7 32. Bd1 Rg8 33. Bh5+ Kf8 34. Rdd1 Rxg1 35. Rxg1 Be8 36. Bg4 Bf7 37. f5 Nc4
38. h4 Rc6 39. Bf4 e3 40. b3 Nd2+ 41. Kb2 d4 42. cxd4 Bxb3 43. Rc1 Rxc1 44. Kxc1 Bd5 45.
Bxe3 Nc4 46. Bh6+ Ke8 47. a4 bxa4 48. Be2 Nd6 49. Bg5 Nxf5 50. Bxa6 Nxd4 51. Bd3 h5 52.
Be3 Nf3 53. Bb5+ Kf7 54. Bxa4 Nxh4 55. Bd1 Kg6 56. Bc2+ Kf6 57. Kd2 Ng2 58. Bg1 Bf3 59.
Bd3 e5 60. Bf1 Nh4 61. Bb6 Kf5 62. Bd8 Kg4 63. Bb5 Ng2 64. Bd7+ Kg3 65. Bc7 Kf4 66. Bb5
Nh4 67. Ke1 Bg4 68. Bf1 Nf5 69. Kf2 h4 70. Bd3 Ng3 71. Bd8 h3 72. Bh4 Nh5 73. Bg6 e4 74.
Bd8 e3+ 75. Ke1 Kg3 0-1