[Event "Interzonal-07"]
[Site "Sousse"]
[Date "1967.10.29"]
[Round "11"]
[White "Ivkov, Borislav"]
[Black "Cuellar Gacharna, Miguel"]
[Result "1-0"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. b4 Bg7 5. Bb2 O-O 6. Be2 a5 7. b5 a4 8. O-O c6 9. Na3 Bg4 10. c4 e6 11. Rb1 Nbd7 12. bxc6 bxc6 13. Nd4 Bxe2 14. Qxe2 Rc8 15. cxd5 cxd5 16. Nab5 Ne4 17. d3 Nec5 18. Ba3 e5 19. fxe5 Nxe5 20. Na7 Rc7 21. Ndb5 Nexd3 22. Nxc7 Qxc7 23. Nb5 Qe5 24. Rfd1 Qe4 25. Nd6 Qh4 26. g3 Qh3 27. Rxd3 Nxd3 28. Qxd3 Be5 29. Nf5 Re8 30. Qb5 Rd8 31. Ne7+ Kg7 32. Bb2 Bxb2 33. Qxb2+ Kh6 34. Qf6 Qe6 35. Qxe6 fxe6 36. Nc6 Rc8 37. Rb6 Kg5 38. h4+ Kh5 39. Kg2 g5 40. Kh3 gxh4 41. gxh4 a3 42. Ra6 h6 43. Nd4 Rc1 44. Ne2 Re1 45. Nf4# 1-0