[Event "World-ch25 Petrosian-Spassky +4-3=17"]
[Site "Moscow"]
[Date "1966.05.06"]
[Round "12"]
[White "Petrosian, Tigran V"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]
1. Nf3 g6 2. c4 Bg7 3. d4 d6 4. Nc3 Nd7 5. e4 e6 6. Be2 b6 7. O-O Bb7 8. Be3 Ne7 9. Qc2 h6 10. Rad1 O-O 11. d5 e5 12. Qc1 Kh7 13. g3 f5 14. exf5 Nxf5 15. Bd3 Bc8 16. Kg2 Nf6 17. Ne4 Nh5 18. Bd2 Bd7 19. Kh1 Ne7 20. Nh4 Bh3 21. Rg1 Bd7 22. Be3 Qe8 23. Rde1 Qf7 24. Qc2 Kh8 25. Nd2 Nf5 26. Nxf5 gxf5 27. g4 e4 28. gxh5 f4 29. Rxg7 Qxg7 30. Rg1 Qe5 31. Nf3 exd3 32. Nxe5 dxc2 33. Bd4 dxe5 34. Bxe5+ Kh7 35. Rg7+ Kh8 36. Rf7+ Kg8 37. Rg7+ Kh8 38. Rg6+ Kh7 39. Rg7+ 1/2-1/2