[Event "NED-ch30"]
[Site "Leeuwarden"]
[Date "1975.04.09"]
[Round "3"]
[White "Dieks, Roy G"]
[Black "Timman, Jan H"]
[Result "0-1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Bd3 e5 6. dxe5 dxe5 7. Nf3 exf4 8. Bxf4 O-O 9. Bg5 h6 10. Bh4 g5 11. Bg3 Nc6 12. O-O Be6 13. Bb5 Qe7 14. Bxc6 bxc6 15. Qe2 Qb4 16. a3 Qxb2 17. Be5 Qb6+ 18. Bd4 Qa5 19. e5 Nd7 20. Ne4 Rfe8 21. Nf6+ Bxf6 22. exf6 c5 23. Be3 Qc3 24. Qf2 Qxf6 25. Bxc5 Nxc5 26. Qxc5 Qe7 27. Qc3 Bd5 28. Rae1 Qd6 29. Ne5 Rf8 30. Rf5 Rae8 31. Ref1 f6 32. Ng4 Re2 33. R5f2 Rxf2 34. Rxf2 f5 35. Ne3 Be4 36. Qc4+ Kh8 37. g4 Qb6 38. Nxf5 Bxf5 39. gxf5 Rxf5 40. Qc3+ Kh7 0-1