[Event "World-ch25 Petrosian-Spassky +4-3=17"]
[Site "Moscow"]
[Date "1966.05.13"]
[Round "14"]
[White "Petrosian, Tigran V"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]

1. Nf3 Nf6 2. g3 b5 3. a4 b4 4. d3 Bb7 5. e4 d6 6. Bg2 Nbd7 7. O-O e6 8. a5 Rb8 9. Nbd2 Be7 10. Nc4 O-O 11. Re1 a6 12. Bf4 Ba8 13. Qe2 Re8 14. h3 Bf8 15. Ncd2 g6 16. Bg5 h6 17. Be3 Bg7 18. Kh2 Qe7 19. Ra2 Kh7 20. Ng1 d5 21. f4 e5 22. fxe5 Qxe5 23. d4 Qe6 24. e5 Ne4 25. Raa1 c5 26. Nxe4 dxe4 27. c3 bxc3 28. bxc3 cxd4 29. cxd4 f6 30. exf6 Nxf6 31. Rab1 Nd5 32. Qd2 Rxb1 33. Rxb1 Qd6 34. Ne2 Qa3 35. Bg1 Qd3 36. Qe1 Bc6 37. Rd1 Qa3 38. Nf4 Nxf4 39. gxf4 Bb5 40. Be3 Bd3 41. h4 Qd6 42. h5 g5 43. Qg3 Bxd4 44. Bxd4 Qxd4 45. fxg5 Qe5 46. Qxe5 Rxe5 47. gxh6 Rxa5 48. Kg3 Rg5+ 49. Kf2 a5 50. Ra1 Kxh6 51. Bh1 Rxh5 52. Ke3 Bc2 53. Rc1 Rh3+ 54. Kd4 a4 55. Bxe4 Bxe4 56. Kxe4 a3 57. Kd4 1/2-1/2