[Event "Interzonal-06"]
[Site "Amsterdam"]
[Date "1964.05.26"]
[Round "6"]
[White "Bilek, Istvan"]
[Black "Ivkov, Borislav"]
[Result "0-1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. d4 Nd7 5. Nbd2 e6 6. h3 Bh5 7. c3 f5 8. Qb3 Rb8 9. c4 Bd6 10. Qe3 Qe7 11. Ng5 Nf8 12. f4 Nf6 13. O-O h6 14. Ngf3 N8d7 15. Ne5 O-O 16. b3 Ne4 17. Nxe4 dxe4 18. Bb2 Nxe5 19. fxe5 Bc7 20. a4 Ba5 21. Kh2 Rbd8 22. Rf2 c5 23. Rff1 cxd4 24. Bxd4 Rxd4 25. Qxd4 Bxe2 26. Rfc1 Bc7 27. Ra2 Bd3 28. Qxa7 Bxe5 29. Qg1 Qg5 30. Rd1 Qxg3+ 31. Kh1 f4 32. Bf1 Qf3+ 33. Bg2 Qh5 0-1