[Event "Olympiad-17 Preliminaries A"]
[Site "Havana"]
[Date "1966.10.27"]
[Round "2"]
[White "Casa, Alex"]
[Black "Petrosian, Tigran V"]
[Result "0-1"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 Qb6 8. Qd2 Qxb2 9.
Rb1 Qa3 10. Be2 b5 11. f5 Qc5 12. Be3 Qc7 13. Nd5 Nxd5 14. exd5 g6 15. O-O Bg7 16. a4 bxa4
17. Nc6 Ne5 18. fxg6 hxg6 19. Bb6 Qd7 20. Qf4 O-O 21. Bd4 a3 22. c4 Nxc6 23. Bxg7 Kxg7 24.
dxc6 Qxc6 25. Qd4+ e5 26. Qh4 f5 27. Rfd1 Ra7 28. Qg5 f4 29. h4 Bf5 30. Ra1 Raf7 31. Kh2
Qc5 32. Ra2 Rb8 33. Rad2 Qf2 34. Bd3 Qg3+ 35. Qxg3 fxg3+ 36. Kxg3 Rb3 37. Kh2 Rxd3 38.
Rxd3 Bxd3 39. Rxd3 a2 40. Ra3 Rf4 0-1