[Event "New York op"]
[Site "New York"]
[Date "1987.??.??"]
[Round "?"]
[White "Gruenfeld, Yehuda"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[WhiteElo "2535"]
[BlackElo "2610"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7 5. Nc3 e6 6. g3 d6 7. Bg2 Nxd4 8. Qxd4 Bd7 9. O-O Nf6 10. a4 a6 11. b3 Be7 12. Bb2 O-O 13. a5 Rad8 14. Rfd1 Rfe8 15. h3 Bf8 16. g4 h6 17. Qd2 Bc6 18. g5 hxg5 19. Qxg5 Be7 20. Qe3 d5 21. exd5 exd5 22. Qd4 Bd6 23. Re1 Rxe1+ 24. Rxe1 Qxa5 25. Rd1 Re8 26. Bf3 Be5 27. b4 Qc7 28. Qd3 Qb6 0-1