[Event "Interzonal-12b"]
[Site "Toluca"]
[Date "1982.08.13"]
[Round "3"]
[White "Portisch, Lajos"]
[Black "Seirawan, Yasser"]
[Result "0-1"]
[WhiteElo "2630"]
[BlackElo "2575"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. O-O e5 9. Nd2 O-O 10. Nb3 Qe7 11. a4 b6 12. Kh1 Ba6 13. Ba3 Rfc8 14. Qd2 e4 15. Be2 Nb8 16. f4 exf3 17. gxf3 Nbd7 18. Rg1 Nf8 19. Rg2 Ng6 20. a5 Nh4 21. Rf2 cxd4 22. Nxd4 Bxc4 23. e4 Qe5 24. Rg1 Bxe2 25. Rxe2 Ng6 26. a6 d5 27. Rg5 Qf4 28. exd5 Rxc3 29. Qxc3 Qxg5 30. d6 h5 31. Qc6 Rd8 32. Qb5 Qf4 33. Qd3 Rc8 34. Qe3 Rc4 35. Nb5 Qf5 36. Nxa7 Nh4 37. Bb2 Ng4 38. d7 Nxe3 39. d8=Q+ Kh7 0-1