[Event "Olympiad-21 Final B"]
[Site "Nice"]
[Date "1974.06.28"]
[Round "13"]
[White "Mariotti, Sergio"]
[Black "McKay, Roderick M"]
[Result "1-0"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. Nxe5 g6 6. Bc4 c6 7. Bb3 Bg7 8. O-O O-O 9. Qe2 Bf5 10. Rd1 Nd7 11. c4 Nc7 12. Nc3 Nxe5 13. dxe5 Qb8 14. g4 Be6 15. Bf4 Na6 16. Bg3 Qc8 17. h3 h5 18. gxh5 Bxh3 19. Rd4 Nc5 20. Bc2 Bf5 21. Rad1 Bxc2 22. Qxc2 gxh5 23. b4 Ne6 24. Rh4 Rd8 25. Rxh5 Rxd1+ 26. Nxd1 Nf4 27. Qh7+ Kf8 28. Bxf4 Qg4+ 29. Bg3 Qxd1+ 30. Kg2 Qg4 31. Rh4 Qg6 32. Qxg6 fxg6 33. Rd4 b5 34. cxb5 cxb5 35. Rd5 a5 36. a3 axb4 37. axb4 Rb8 38. e6 Ra8 39. Rxb5 Bc3 40. Bh4 Ra6 41. Rb8+ Kg7 42. Bxe7 Rxe6 43. Bc5 Kf6 44. b5 Ke5 45. b6 Kd5 46. Be3 1-0