[Event "Piatigorsky-Cup 2nd"]
[Site "Santa Monica"]
[Date "1966.08.10"]
[Round "15"]
[White "Ivkov, Borislav"]
[Black "Portisch, Lajos"]
[Result "0-1"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Bg5 Bxc3 8. bxc3 Qe7 9. Re1 Nd8 10. d4 Bg4 11. h3 Bh5 12. g4 Bg6 13. Bh4 h5 14. Nh2 c6 15. Bc4 Ne6 16. gxh5 Bh7 17. Ng4 Nf4 18. Re3 N4xh5 19. Rf3 Kh8 20. Qc1 Rg8 21. Kf1 exd4 22. Bd3 Qe6 23. Nxf6 Nxf6 24. Bxf6 gxf6 25. cxd4 Rg5 26. Qe3 c5 27. c3 Rag8 28. Ke2 cxd4 29. Qxd4 Re5 30. Kd2 d5 31. exd5 Rxd5 32. Qh4 Qe4 33. Qxe4 Bxe4 34. Re3 Rgd8 35. Rxe4 Rxd3+ 36. Ke2 Kg7 37. Re3 Rd2+ 38. Kf3 Rc2 39. Rb1 b6 40. Rb4 Rdd2 41. Rg4+ Kf8 42. Rg2 Rxa2 43. h4 Ra5 44. Rh2 Rf5+ 45. Kg3 Kg7 46. Rg2 Rc5 47. Kh3+ Kf8 48. Rf3 Ke7 49. Rg4 b5 50. Re4+ Re5 51. Rd4 Rxd4 52. cxd4 Rd5 53. Ra3 Rd7 54. h5 Kf8 55. Ra5 Rb7 56. d5 b4 57. d6 b3 58. Ra1 a5 59. h6 b2 60. Rb1 Kg8 61. d7 Rxd7 62. Rxb2 Ra7 63. Ra2 a4 64. Ra3 Kh7 65. Kg4 Ra5 66. Kf4 Kxh6 67. Rh3+ Kg7 68. Ra3 Kf8 69. Ke4 Ke7 70. Kd4 Kd6 71. f3 Ra8 72. Kc4 Ke5 73. Kd3 Kf4 0-1