[Event "Interzonal-13c"]
[Site "Biel"]
[Date "1985.07.11"]
[Round "7"]
[White "Sokolov, Andrei"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]
[WhiteElo "2555"]
[BlackElo "2600"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Nf3 e6 8. Bd3 Nc6 9. O-O b5 10. f5 Be7 11. a4 b4 12. Ne2 O-O 13. Ng3 exf5 14. exf5 Bb7 15. Bg5 h6 16. Bxf6 Bxf6 17. Qc1 Ne5 18. Nxe5 Qc5+ 19. Kh1 Qxe5 20. Nh5 Qxb2 21. Rb1 Qxc1 22. Nxf6+ gxf6 23. Rfxc1 a5 24. Kg1 Rfc8 25. c3 Bd5 26. Kf2 Rxc3 27. Rxc3 bxc3 28. Rb6 Rc8 29. Bc2 Bc6 30. Ra6 Bxa4 31. Bxa4 c2 32. Bxc2 Rxc2+ 33. Kf3 Rc5 34. g4 Rc3+ 35. Kf4 Rc4+ 36. Kg3 a4 37. Rxd6 a3 38. Rd8+ Kg7 39. Ra8 Rc3+ 40. Kg2 h5 41. gxh5 Kh6 42. h4 Kxh5 43. Ra4 1/2-1/2