[Event "Guardian Islington op"]
[Site "Islington"]
[Date "1973.12.08"]
[Round "3"]
[White "MacDonald Ross, Stephen"]
[Black "Timman, Jan H"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O c5 8. dxc5 Bxc3 9. bxc3 bxc5 10. Rb1 Qc7 11. Nd2 d6 12. Qc2 Nbd7 13. f4 Bc6 14. e4 Rab8 15. Nf3 Rxb1 16. Qxb1 e5 17. fxe5 Nxe5 18. Nxe5 dxe5 19. Bg5 Nd7 20. Qc2 Rb8 21. Rb1 Rxb1+ 22. Qxb1 f6 23. Be3 Qa5 24. Qb3 Kf7 25. Kf2 Ke7 26. Bd2 Nb6 27. Ke3 Kd6 28. Be2 Bd7 29. Bc1 Be6 30. Ba3 Bxc4 31. Bxc4 Qxa3 32. Bg8 Qxb3 33. axb3 h6 34. c4 Nd7 35. Bd5 Nf8 36. Kd3 Ne6 37. Kc3 a5 38. Kb2 Nd4 39. Ka3 Kc7 40. Ka4 Kb6 41. Bf7 f5 42. Bg6 f4 43. Bh5 Nc2 44. Be2 g5 45. h3 Ne1 46. Bf1 h5 47. Ka3 g4 48. hxg4 hxg4 49. Kb2 g3 0-1