[Event "Interzonal-06"]
[Site "Amsterdam"]
[Date "1964.05.24"]
[Round "4"]
[White "Pachman, Ludek"]
[Black "Tringov, Georgi Petrov"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 b6 7. Bd3 Bb7 8. Nge2 c5 9. d5 e6 10. O-O exd5 11. cxd5 Ba6 12. Nb5 Bxb5 13. Bxb5 a6 14. Bd3 Re8 15. Qd2 Nbd7 16. Rab1 Ne5 17. b4 Nxd3 18. Qxd3 Nd7 19. bxc5 Ne5 20. Qc2 bxc5 21. Rb7 Rb8 22. Rfb1 Rxb7 23. Rxb7 c4 24. Qa4 Qc8 25. Rb1 Re7 26. Nd4 Rc7 27. Rb6 c3 28. Nc6 Nxc6 29. dxc6 h5 30. Qxa6 Qe6 31. Rb7 c2 32. Qa4 Rc8 33. Qxc2 d5 34. c7 Be5 35. exd5 Qxd5 36. Rb8 Qd7 37. Rxc8+ Qxc8 38. Bb6 Kg7 39. Qc5 Bf4 1-0