[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.12"]
[Round "2"]
[White "Csom, Istvan"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[WhiteElo "2490"]
[BlackElo "2625"]
1. Nf3 d5 2. b3 Bg4 3. Bb2 Nd7 4. e3 Ngf6 5. h3 Bh5 6. Be2 e6 7. c4 c6 8. d3 Bb4+ 9. Nbd2 Bxf3 10. gxf3 e5 11. a3 Bd6 12. cxd5 cxd5 13. d4 O-O 14. Ra2 Re8 15. Qa1 Rc8 16. O-O exd4 17. Bxd4 Nh5 18. Bb5 a6 19. Bxd7 Qxd7 20. Kg2 Re6 21. Rh1 Rg6+ 22. Kf1 Qb5+ 23. Ke1 Rg2 24. Nf1 Qxb3 25. Rb2 Qd3 26. Rxb7 Rxf2 0-1