[Event "Interzonal-06"]
[Site "Amsterdam"]
[Date "1964.06.02"]
[Round "11"]
[White "Tringov, Georgi Petrov"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bc5 7. Bf4 O-O 8. Bc7 Qe7 9. Bd6 Bxd6 10. Qxd6 Ne8 11. Qxe7 Nxe7 12. O-O-O f5 13. f3 a6 14. Nd6 Nxd6 15. Rxd6 b5 16. Bd3 g6 17. Re1 Kf7 18. exf5 Nxf5 19. Bxf5 gxf5 20. Rd4 Rb8 21. b4 Ke7 22. Rh4 Rf7 23. Nd5+ Kd8 24. Nf4 Bb7 25. Nd3 Bd5 26. Kb2 Rg7 27. Re2 Bc4 28. Rd2 Bxd3 29. Rxd3 Rb6 30. g3 Rc6 1/2-1/2