[Event "Timman sim"]
[Site "Delft"]
[Date "1974.??.??"]
[Round "?"]
[White "Timman, Jan H"]
[Black "Olsthoorn,"]
[Result "1-0"]

1. c4 c5 2. Nc3 e6 3. g3 Nf6 4. Bg2 Bd6 5. Nf3 O-O 6. O-O Nc6 7. b3 Be5 8. Nxe5 Nxe5 9. Bb2 Ng6 10. d4 d6 11. Qd2 cxd4 12. Qxd4 e5 13. Qd2 Rb8 14. Rad1 Ne8 15. Nb5 a6 16. Nxd6 Nxd6 17. Qxd6 Qxd6 18. Rxd6 Bg4 19. Re1 b6 20. h3 Bf5 21. Red1 f6 22. g4 Bc8 23. e3 Bb7 24. Rxb6 Bxg2 25. Rxb8 Rxb8 26. Kxg2 Rc8 27. Rd6 Ra8 28. Kf3 Ne7 29. Bc3 a5 30. Ke4 g6 31. Rxf6 a4 32. Bxe5 axb3 33. axb3 Kg7 34. Ra6+ Kf7 35. Rxa8 Nc6 36. f4 Nxe5 37. Kxe5 Kg7 38. g5 Kf7 39. Ra7+ Ke8 40. c5 1-0