[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1975.01.28"]
[Round "12"]
[White "Portisch, Lajos"]
[Black "Timman, Jan H"]
[Result "1/2-1/2"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. Nf3 Bg4 5. e3 c5 6. Be2 cxd4 7. exd4 Nh6 8. h3 Bxf3 9. Bxf3 Nc6 10. d5 Ne5 11. Be2 Nf5 12. Bd2 O-O 13. O-O a6 14. Re1 Qb6 15. b3 Qd4 16. Rc1 Nd3 17. Bxd3 Qxd3 18. a4 Rfe8 19. a5 e6 20. dxe6 fxe6 21. Ne4 Rac8 22. Bc3 Qxd1 23. Rexd1 d5 24. cxd5 exd5 25. Bxg7 dxe4 26. Rxc8 Rxc8 27. Bf6 Kf7 28. Bg5 Ke6 29. g4 Nd6 30. Rd4 Ke5 31. Bf6+ Ke6 32. Bh4 Ke5 33. Rd1 Ke6 34. Rd4 Ke5 35. Bf6+ Ke6 36. g5 Rc5 37. Bd8 Rd5 38. Rb4 Rb5 39. Rxb5 Nxb5 40. Bf6 Na7 41. f3 Kf5 42. fxe4+ Kxe4 43. Kg2 Nc6 44. Bc3 Kd3 45. Be1 Nd4 46. b4 Nc2 47. Bf2 Nxb4 48. Kf3 Nc6 49. Be1 Kd4 50. Kf4 Kd5 51. h4 Ne5 52. Bc3 Nc4 53. h5 b6 54. axb6 Nxb6 55. hxg6 hxg6 56. Ke3 Nc4+ 57. Kd3 Ne5+ 58. Kc2 Nf3 59. Bf6 Ke6 60. Kc3 Kf5 61. Kb4 Nxg5 62. Be7 Ne4 63. Bh4 Ke6 64. Ka5 Nc5 65. Kb6 Kd6 66. Bg3+ Kd5 67. Bh4 Kc4 68. Ka5 Kd4 69. Kb6 Kd5 70. Be7 Kc4 71. Bh4 Kb4 72. Be1+ 1/2-1/2