[Event "Olympiad-18 Preliminaries A"]
[Site "Lugano"]
[Date "1968.10.20"]
[Round "3"]
[White "Clarke, Peter Hugh"]
[Black "Zichichi, Alvise"]
[Result "1/2-1/2"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nf3 Nge7 8. O-O Nd4 9. h3 O-O 10. Kh2 f6 11. Be3 Be6 12. Qd2 Qd7 13. Ne2 Rac8 14. c3 Nxf3+ 15. Rxf3 d5 16. fxe5 dxe4 17. dxe4 Qxd2 18. Bxd2 fxe5 19. Rxf8+ Bxf8 20. Ng1 Nc6 21. Nf3 h6 22. Kg1 Rd8 23. Kf2 Kg7 24. Bf1 a6 25. Be3 Be7 26. h4 Rf8 27. Be2 Rf7 28. Kg2 Bf8 29. Nd2 Na5 30. b3 Rd7 31. Nf3 Nc6 32. Rd1 Rxd1 33. Bxd1 Kf6 34. Kf2 b6 1/2-1/2