[Event "World-ch25 Petrosian-Spassky +4-3=17"]
[Site "Moscow"]
[Date "1966.05.16"]
[Round "15"]
[White "Spassky, Boris Vasilievich"]
[Black "Petrosian, Tigran V"]
[Result "1/2-1/2"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nh3 Nf6 7. O-O Bg4 8. f3 Bxh3 9. Bxh3 O-O 10. Be3 Ne8 11. Qd2 Nc7 12. Rae1 b6 13. Nd1 d5 14. Qe2 e6 15. f4 f5 16. Bc1 Rf7 17. Bg2 Qd7 18. Nf2 Rd8 19. c3 b5 20. exd5 exd5 21. Bd2 c4 22. Qf3 Ne7 23. dxc4 bxc4 24. b3 Nc8 25. bxc4 dxc4 26. Bc1 Qa4 27. Rd1 Rdf8 28. Be3 Nb6 29. Bc5 Rc8 30. Bb4 Na6 31. Bd6 Qa5 32. g4 Qxc3 33. Qe2 Qf6 34. Rfe1 Rd7 35. Be7 Rxe7 36. Qxe7 Qxe7 37. Rxe7 Nc5 38. gxf5 c3 39. fxg6 hxg6 40. Re2 Rc7 41. Ne4 Ne6 42. Nxc3 Nd4 43. Re5 Bxe5 44. fxe5 Rxc3 45. Rxd4 Kf7 46. Rd6 Rc5 47. Rf6+ Kg7 48. Be4 Rxe5 49. Rxg6+ Kf7 50. Bc2 Re1+ 51. Kf2 Ra1 52. Rc6 Rxa2 53. h4 Nd5 54. Kf3 Ra3+ 55. Ke4 Rc3 1/2-1/2