[Event "Piatigorsky-Cup 2nd"]
[Site "Santa Monica"]
[Date "1966.08.04"]
[Round "12"]
[White "Petrosian, Tigran V"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 O-O 6. Rc1 Nbd7 7. e3 c6 8. Bd3 dxc4 9. Bxc4 Nd5 10. Bxe7 Qxe7 11. Ne4 N5f6 12. Nxf6+ Qxf6 13. O-O e5 14. e4 exd4 15. Qxd4 Qxd4 16. Nxd4 Ne5 17. Bb3 Rd8 18. Rfd1 Bd7 19. Rc5 Ng6 20. Rc2 Kf8 21. f3 Ke8 22. Kf2 Nf8 23. Ke3 g6 24. f4 Ke7 25. h3 Be6 26. Rcd2 Bxb3 27. Nxb3 Rxd2 28. Rxd2 b6 29. Nd4 Rc8 30. e5 f6 31. exf6+ Kxf6 32. g4 Re8+ 33. Kf3 Rd8 34. Nb3 Rxd2 35. Nxd2 h6 36. Ne4+ Ke6 37. Ng3 Kf6 38. h4 Ne6 39. h5 Nc5 40. hxg6 Kxg6 41. Ne4 Nd3 42. b3 Nb4 43. Nc3 Kf6 44. Ke4 Nc2 45. Ne2 Nb4 46. a4 c5 47. Ng3 Kg6 48. Nf5 Nc6 49. Nh4+ Kf6 50. Nf3 Nb4 51. Ne5 Ke6 52. Nc4 Kf6 53. Nd6 Nc6 54. Kd5 Ne7+ 55. Ke4 Ke6 56. Nc4 Nc6 57. g5 hxg5 58. fxg5 Nb4 59. Ne5 a6 60. g6 Kf6 61. Nd7+ Kxg6 62. Nxb6 Kf7 63. Nd5 a5 64. Nb6 Ke6 65. Nc4 Nc6 66. Kd3 Kd7 67. Ke3 Ke7 68. Kd3 Kd7 69. Nd2 Ne5+ 70. Kc3 Kc7 71. Ne4 Kc6 1/2-1/2