[Event "Interzonal-07"]
[Site "Sousse"]
[Date "1967.11.04"]
[Round "15"]
[White "Ivkov, Borislav"]
[Black "Kortschnoj, Viktor Lvovich"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 d5 5. e3 O-O 6. a3 Be7 7. b3 b6 8. Bb2 Bb7 9. Bd3 c5 10. O-O cxd4 11. exd4 Nbd7 12. Re1 Re8 13. Ne5 dxc4 14. bxc4 Nxe5 15. Rxe5 Bf8 16. a4 g6 17. a5 Bg7 18. Re1 Nh5 19. Be4 Bxe4 20. Nxe4 Rc8 21. Qb3 f5 22. Ng3 Nxg3 23. hxg3 bxa5 24. Red1 Qc7 25. c5 Rb8 26. Qa2 Qc6 27. Bc3 Re7 28. Qxa5 Rd7 29. Qa6 Rc8 30. Qc4 Qd5 31. Qxd5 Rxd5 32. f4 Rd7 33. Kf1 Rc6 34. Ke2 Bf6 35. Ra4 g5 36. Rda1 gxf4 37. gxf4 Rcc7 38. Rb1 Rc8 39. g3 h5 40. Rab4 Kf7 41. Rb7 Ke8 42. Kd3 Bd8 43. Kc4 a5 44. Rb8 Rxb8 45. Rxb8 Ke7 46. Ra8 Rb7 47. c6 Rb1 48. Ra7+ Kd6 49. Rd7+ Kxc6 50. Rxd8 Rg1 51. d5+ exd5+ 52. Rxd5 Rxg3 53. Rxa5 h4 54. Rxf5 h3 55. Rh5 Rf3 56. Be5 Ra3 57. Rh6+ Kd7 58. Kd5 Rf3 59. Rh7+ Kd8 60. Kd6 1-0