[Event "Interzonal-06"]
[Site "Amsterdam"]
[Date "1964.05.29"]
[Round "8"]
[White "Portisch, Lajos"]
[Black "Smyslov, Vassily V"]
[Result "0-1"]

1. c4 Nf6 2. d4 e6 3. Nf3 b6 4. g3 Ba6 5. Qa4 c6 6. Nc3 Be7 7. Bg2 O-O 8. Bf4 d6 9. Rc1
Qc8 10. O-O Nbd7 11. Rfd1 Bb7 12. e4 Nh5 13. Bg5 Bxg5 14. Nxg5 Nhf6 15. Qa3 h6 16. Nf3 c5
17. Ne1 a6 18. dxc5 dxc5 19. Qb3 Qc7 20. f4 e5 21. Nd5 Bxd5 22. exd5 Qd6 23. Nd3 Rfe8 24.
Re1 exf4 25. Nxf4 Ne5 26. Qc3 b5 27. b3 bxc4 28. bxc4 Rab8 29. a3 Re7 30. Re2 Rbe8 31.
Rce1 Ned7 32. Bh3 Rxe2 33. Rxe2 Rxe2 34. Nxe2 Qe5 35. Qd3 Qa1+ 36. Bf1 Ng4 37. h3 Nge5 38.
Qc3 Qb1 39. Nf4 Qe4 40. Kf2 g5 41. Nh5 f5 42. Qb3 Qd4+ 43. Kg2 Qd2+ 44. Kg1 Kf7 45. Bg2
Qe1+ 46. Bf1 Qd2 47. Bg2 Qe2 48. g4 f4 49. Qb1 Qe3+ 50. Kh2 Qd3 51. Qb7 Qd2 52. Kg1 f3 53.
Bf1 Qe3+ 54. Kh1 Qe1 55. Kg1 Qe3+ 56. Kh1 Qf2 57. Qb1 Kg8 58. Qa1 Kf8 59. d6 Kf7 60. Qd1
Ke8 61. Ng7+ Kd8 62. Qb1 Nxg4 63. hxg4 Qh4+ 64. Kg1 Qg3+ 0-1