[Event "Interzonal-06"]
[Site "Amsterdam"]
[Date "1964.06.12"]
[Round "18"]
[White "Lengyel, Levente"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. d3 Nd7 5. h3 Bh5 6. c4 e6 7. cxd5 cxd5 8. Nc3 Ne7 9. O-O Nc6 10. Bf4 Be7 11. g4 Bg6 12. e4 d4 13. Ne2 e5 14. Bg3 h5 15. g5 Bxg5 16. Qb3 Rb8 17. Nxg5 Qxg5 18. f4 Qe7 19. fxe5 Ndxe5 20. Nf4 Qg5 21. Nxg6 Qxg6 22. Bxe5 Nxe5 23. Rf5 Nc6 24. Qa3 Qe6 25. Raf1 f6 26. Qc5 Qe7 27. Qc4 Qf7 28. Qc5 Qe7 29. Qc4 Qf7 30. Qc5 Qe7 1/2-1/2