[Event "Budapest Interzonal playoff"]
[Site "Budapest"]
[Date "1987.??.??"]
[Round "1"]
[White "Portisch, Lajos"]
[Black "Nunn, John DM"]
[Result "1-0"]
[WhiteElo "2615"]
[BlackElo "2585"]

1. c4 g6 2. d4 Nf6 3. Nc3 d5 4. Bf4 Bg7 5. Rc1 dxc4 6. e4 c5 7. dxc5 Qa5 8. Bxc4 O-O 9. e5 Nfd7 10. Nf3 Nxc5 11. O-O Nc6 12. Nd5 Be6 13. b4 Nxb4 14. Nxe7+ Kh8 15. Bd2 Rad8 16. Bxe6 fxe6 17. a3 Qxa3 18. Rxc5 Na6 19. Nxg6+ hxg6 20. Rc2 Nb4 21. Bxb4 Qxb4 22. Qc1 Qe7 23. Qe3 Rf5 24. Rfc1 Kg8 25. h3 b6 26. Nd4 Rxd4 27. Qxd4 Rxe5 28. Qg4 1-0