[Event "Olympiad-17 Preliminaries A"]
[Site "Havana"]
[Date "1966.10.31"]
[Round "6"]
[White "Olivera, Alfredo"]
[Black "Donne, Pol"]
[Result "0-1"]

1. e4 d6 2. d4 Nd7 3. Nf3 e5 4. d5 Ngf6 5. Nc3 Be7 6. g3 O-O 7. Bg2 Nc5 8. Nd2 Bg4 9. f3 Bd7 10. Nc4 Ne8 11. Be3 b6 12. b4 Na6 13. Rb1 f5 14. Qd3 Qc8 15. O-O Nf6 16. a3 fxe4 17. Nxe4 Bf5 18. Ncd2 c5 19. dxc6 Nc7 20. c4 Ne6 21. f4 Ng4 22. fxe5 dxe5 23. Rbe1 Kh8 24. Rxf5 Rxf5 25. Nd6 Bxd6 26. Qxf5 Nxe3 27. Rxe3 Nd4 28. Qxc8+ Rxc8 29. Ne4 Rxc6 30. Nxd6 Rxd6 31. Rxe5 h6 32. Re7 a6 33. Re8+ Kh7 34. Be4+ g6 35. Re7+ Kh8 36. Kf2 Re6 37. Rxe6 Nxe6 38. Bxg6 Kg7 39. Be4 Kf6 40. Ke3 Ke5 41. Bb7 a5 42. Kd3 Nd4 43. bxa5 bxa5 44. c5 Nb5 45. Ba6 Nc7 46. Bc4 Ne8 47. Bf7 Nc7 48. Kc4 Kf6 49. Bh5 Ke5 50. Bf3 Ne6 51. Kb5 Nd4+ 52. Kb6 Nxf3 53. c6 Nd2 54. Kb7 Nc4 55. c7 Nd6+ 56. Kb8 Ke4 57. c8=Q Nxc8 58. Kxc8 Kf3 59. a4 Kg2 60. Kb7 Kxh2 61. Kb6 0-1