[Event "Nathanya-12 Group A"]
[Site "Nathanya"]
[Date "1975.06.07"]
[Round "10"]
[White "Lederman, Leon S"]
[Black "Timman, Jan H"]
[Result "0-1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. c4 Nb6 7. exd6 cxd6 8. Be3 Be7 9. Nbd2 O-O 10. O-O Nc6 11. a3 Bf6 12. Rc1 d5 13. c5 Nc8 14. b4 a6 15. Rb1 N8e7 16. a4 Nf5 17. b5 axb5 18. axb5 Nce7 19. Bf4 Ng6 20. Bg3 h5 21. b6 Nxg3 22. hxg3 Ne7 23. Nb3 Qd7 24. Ra1 Ra4 25. Qd2 Bxf3 26. gxf3 Nf5 27. Rxa4 Qxa4 28. Qc2 Qb4 29. Rb1 Rc8 30. Bd3 Nxd4 31. Nxd4 Qxd4 32. c6 Rxc6 33. Qxc6 bxc6 34. b7 Qxd3 35. b8=Q+ Kh7 36. Kg2 Bd4 37. Rf1 c5 38. Qf4 Kg6 39. Qb8 Qd2 40. Qb1+ Kh6 41. Qb7 Kg6 42. f4 Qd3 43. Qb1 Qxb1 44. Rxb1 Kf5 45. Kf3 e5 46. fxe5 Bxe5 47. Rb7 Ke6 48. Ke3 Bd6 49. f4 g6 50. Kf3 d4 51. Ra7 f5 52. Rg7 c4 53. Rxg6+ Kd5 54. Rf6 c3 55. Rxf5+ Kc4 0-1