[Event "Candidates Tournament"]
[Site "Amsterdam/Leeuwarden"]
[Date "1956.03.31"]
[Round "4"]
[White "Petrosian, Tigran V"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]
1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 Nc6 7. d3 a6 8. Nd2 Rb8 9. a3 Ne8 10. e3 Bd7 11. Qc2 f5 12. b4 e5 13. Bb2 g5 14. Nd5 Ne7 15. Nxe7+ Qxe7 16. f4 Nf6 17. Rae1 h6 18. Nf3 Nh7 19. Bc3 Rbe8 20. Qb2 Bf6 21. b5 axb5 22. cxb5 Qg7 23. fxe5 dxe5 24. d4 e4 25. Ne5 Bxe5 26. dxe5 Be6 27. g4 Qg6 28. Qb1 Bd5 29. gxf5 Rxf5 30. Rxf5 Qxf5 31. Qd1 Qe6 32. Qh5 Re7 33. Bh3 g4 34. Bxg4 Rg7 35. h3 Qe7 36. Bb4 Qd7 37. Kh1 Be6 38. Rd1 Bxg4 39. Qxg4 Qxg4 40. hxg4 Ng5 41. Kg2 Ne6 42. Kh3 Rf7 43. g5 hxg5 44. Kg4 b6 45. a4 Kg7 46. Kh5 g4 47. Kxg4 Kg6 48. a5 bxa5 49. Bxa5 Rf2 50. Bxc7 Nxc7 51. Rd6+ Kg7 52. b6 Ne8 53. Rd8 Rb2 54. Rxe8 Rxb6 55. Kf5 Kf7 56. Ra8 Ke7 57. Ra7+ Ke8 58. Kxe4 Rb4+ 59. Kf5 Rb6 60. Rg7 Rb3 61. e4 Kf8 62. Ra7 Rb6 63. Rd7 Ke8 64. Rd6 Rb4 65. Rh6 Ra4 66. Rb6 Ke7 67. Rb7+ Ke8 68. Kf6 Rxe4 69. Ke6 Kf8 70. Rb8+ Kg7 71. Kd6 Kf7 1/2-1/2