[Event "Interzonal-13c"]
[Site "Biel"]
[Date "1985.07.23"]
[Round "15"]
[White "Petursson, Margeir"]
[Black "Sokolov, Andrei"]
[Result "1/2-1/2"]
[WhiteElo "2550"]
[BlackElo "2555"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. b3 Bb4+ 6. Bd2 Be7 7. Nc3 d5 8. cxd5 Nxd5 9. Bg2 O-O 10. O-O Nd7 11. Nxd5 exd5 12. Rc1 Re8 13. Rc2 c5 14. Be3 Nf6 15. Re1 Rc8 16. Qc1 Qd7 17. dxc5 bxc5 18. Bxc5 Bxc5 19. Rxc5 Rxc5 20. Qxc5 Bxe2 21. Rc1 h6 22. Nd4 Bd3 23. Nc6 a6 24. Nb4 Be4 25. Rd1 Bxg2 26. Kxg2 Qg4 27. Rd4 Qe2 28. Qc6 Re4 29. Qc8+ Kh7 30. Qf5+ Kg8 31. Qc8+ Kh7 32. Qf5+ 1/2-1/2