[Event "Piatigorsky-Cup 2nd"]
[Site "Santa Monica"]
[Date "1966.07.20"]
[Round "3"]
[White "Portisch, Lajos"]
[Black "Petrosian, Tigran V"]
[Result "1-0"]
1. c4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. g3 O-O 6. Bg2 Nc6 7. O-O a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8 11. b3 b5 12. Bb2 bxc4 13. bxc4 Bh6 14. f4 e5 15. Rae1 exf4 16. gxf4 Nh5 17. e3 Re8 18. Nce4 Bf5 19. Bc3 Nb7 20. Qa4 a5 21. Rb1 Qe7 22. Rfe1 Bd7 23. Qc2 Bf5 24. Qa4 Kf8 25. Rb6 Rbd8 26. Qb3 Bc8 27. Nf1 Rd7 28. Nfg3 Nxg3 29. hxg3 Bg7 30. Qb2 f5 31. Bxg7+ Qxg7 32. Nf6 1-0