[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1978.01.20"]
[Round "1"]
[White "Portisch, Lajos"]
[Black "Panno, Oscar"]
[Result "1-0"]
[WhiteElo "2630"]
[BlackElo "2580"]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O b6 8. cxd5 exd5 9. Ne5 Bxc3 10. bxc3 Ba6 11. f3 Re8 12. Re1 Nfd7 13. Bxa6 Nxa6 14. Nd3 Nf6 15. Nf2 Nc7 16. e4 Ne6 17. e5 Nd7 18. Qd3 Qh4 19. Be3 Rac8 20. g3 Qh5 21. f4 f5 22. dxc5 Ndxc5 23. Qxd5 Red8 24. Qc4 Kf7 25. Bxc5 Rxc5 26. Qa4 Rc7 27. Rad1 Rxd1 28. Rxd1 Ke7 29. Rd6 Qf3 30. Qb3 Nd8 31. Qg8 Nf7 32. Rd3 Qe2 33. Qxg7 Qxa2 34. Qf6+ 1-0