[Event "Zonal Reykjavik"]
[Site "Reykjavik"]
[Date "1975.10.??"]
[Round "4"]
[White "Thorsteinsson, Bjorn"]
[Black "Timman, Jan H"]
[Result "0-1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Be2 Nf6 5. Nc3 O-O 6. h3 Nbd7 7. Be3 e5 8. dxe5 dxe5 9. Qd2 b6 10. O-O-O Bb7 11. g4 Nc5 12. Bxc5 bxc5 13. Qe3 Qe7 14. Nd2 Rfd8 15. Nb3 Rd4 16. f3 a5 17. Nb5 a4 18. N3xd4 cxd4 19. Qa3 c5 20. Bc4 Nd7 21. Qd3 Nb6 22. Na3 Bc8 23. Kb1 Nxc4 24. Qxc4 Be6 25. Qd3 c4 26. Nxc4 Qb4 27. b3 Rc8 28. Nd2 Bh6 29. Rh2 Bf4 30. Rg2 Rc3 31. Qa6 a3 32. Qa4 Qc5 33. b4 Qc8 34. Nb3 Rxf3 35. Nc5 Rc3 36. Nb3 Rxh3 37. Qxa3 Bxg4 38. Re1 Bf3 39. Rgg1 Be3 40. Rgf1 Bxe4 41. Nc5 Bf5 42. Re2 e4 43. Qa4 d3 44. Rg2 d2 45. Rd1 Bg4 46. Rdxd2 Bxd2 47. Rxd2 e3 48. Rd6 e2 49. Nd3 Rxd3 0-1