[Event "Interzonal-06"]
[Site "Amsterdam"]
[Date "1964.05.20"]
[Round "1"]
[White "Vranesic, Zvonko"]
[Black "Porat, Yosef"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Ne2 d5 6. a3 Bxc3+ 7. Nxc3 cxd4 8. exd4 Nc6 9. Be3 O-O 10. Rc1 Re8 11. Be2 e5 12. Nxd5 Nxd5 13. cxd5 Qxd5 14. O-O Nxd4 15. Bc4 Qd6 16. f4 Nf5 17. Qxd6 Nxd6 18. fxe5 Rxe5 19. Rcd1 Be6 20. Bxe6 Rxe6 21. Bc5 Ne8 22. Rd7 b6 23. Rdxf7 Nf6 24. Re7 Rxe7 25. Bxe7 Kf7 26. Bb4 Re8 27. Rf2 Rd8 28. g4 Kg6 29. h3 Rd3 30. Kg2 Nd5 31. Bf8 Ne3+ 32. Kh2 Nd1 33. Rc2 Kf7 34. Bb4 a5 35. Rc7+ Ke6 36. Bf8 g6 37. Re7+ Kd5 38. Rxh7 Nxb2 39. Rg7 Rf3 40. Be7 Re3 41. Bf6 Nd3 42. Rd7+ Kc6 43. Re7 Rxe7 44. Bxe7 Kd7 45. Bf6 b5 46. Kg3 b4 47. axb4 axb4 48. Kh4 Ke6 49. Bd4 Ne5 50. Ba1 Nf3+ 51. Kg3 Ne1 52. Kf4 b3 53. Kg5 Kf7 54. Bc3 Nf3+ 55. Kh6 g5 56. Ba1 Ke6 1/2-1/2