[Event "HUN-ch18"]
[Site "Budapest"]
[Date "1963.01.??"]
[Round "?"]
[White "Portisch, Lajos"]
[Black "Sapi, Laszlo"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Nf3 d6 6. Bg5 c5 7. d5 e5 8. Be2 h6 9. Bd2 Nh5 10. g3 Na6 11. Qc1 Kh7 12. h4 f5 13. exf5 Bxf5 14. g4 Bxg4 15. Ng5+ hxg5 16. Bxg4 gxh4 17. Bxh5 gxh5 18. Ne4 Bf6 19. Bg5 Bxg5 20. Nxg5+ Kh8 21. Rxh4 Rf5 22. Rxh5+ Kg8 23. Ke2 Qf6 24. Ne4 Qg6 25. Qg1 Kg7 26. Rxf5 1-0