[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.11.08"]
[Round "13"]
[White "Trevelyan, John"]
[Black "Khatib, Ahmed"]
[Result "0-1"]
[WhiteElo "2205"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c5 6. Nc3 Nc6 7. d4 d5 8. cxd5 Nxd5 9. Nxd5 Qxd5 10. Ne5 Qxd4 11. Nxc6 bxc6 12. Qxd4 cxd4 13. Bxc6 Rb8 14. Be4 Bb7 15. Bd3 e5 16. f3 Bd5 17. b3 f5 18. Ba3 Rfc8 19. Rac1 Bh6 20. f4 Rxc1 21. Bxc1 e4 22. Bb1 Bg7 23. Rd1 Be6 24. Kf1 Kf7 25. Ba3 Rc8 26. Ke1 Rd8 27. Bb2 Rd7 28. Kf1 Ke8 29. Ba1 Kd8 30. Rc1 Rc7 31. Rxc7 Kxc7 32. e3 Kd6 33. b4 Bc4+ 34. Ke1 Kd5 35. a3 Bb3 36. Bb2 Kc4 37. g4 h6 38. h4 d3 39. Bxg7 fxg4 40. Bb2 g3 41. Bc1 Kc3 42. Kf1 Bd5 43. Kg2 d2 44. Bxd2+ Kxd2 45. Kxg3 Kxe3 46. b5 h5 47. a4 Kd2 48. Bxe4 Bxe4 49. f5 Bxf5 50. Kf4 Kc3 51. a5 Kd4 52. b6 axb6 53. axb6 Be4 54. Kg5 Kc5 0-1