[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.08.03"]
[Round "17"]
[White "Andersson, Ulf"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[WhiteElo "2585"]
[BlackElo "2625"]
1. c4 c5 2. Nc3 Nf6 3. Nf3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 7. a3 g6 8. b4 Bg7 9. bxc5 Ne6 10. Bb2 Nxc5 11. Na4 Bxb2 12. Nxb2 Be6 13. O-O O-O 14. Rc1 Qa5 15. Nc4 Bxc4 16. Rxc4 Qxa3 17. d4 Nd7 18. Qd2 Qd6 19. Qh6 f6 20. e3 Nb6 21. Rcc1 Rac8 22. Nd2 e5 23. Ne4 Qe7 24. Rcd1 Rfd8 25. Qh4 Kg7 26. Nc5 exd4 27. exd4 Rxd4 28. Rxd4 Nxd4 29. Qxd4 Rxc5 30. h4 Qc7 31. Kh2 Rc4 32. Qe3 Rxh4+ 33. Kg1 Rh5 34. Rd1 Re5 35. Qa3 a5 36. Rb1 Nc4 37. Qc3 b5 38. Bf1 Rc5 39. Qa1 Nd2 0-1