[Event "Biel-17 GM"]
[Site "Biel"]
[Date "1984.07.28"]
[Round "6"]
[White "Ostermeyer, Peter"]
[Black "Korchnoi, Viktor Lvovich"]
[Result "1/2-1/2"]
[WhiteElo "2460"]
[BlackElo "2635"]
[ECO "D91"]
[Opening "Grünfeld Defense: Three Knights Variation, Petrosian System"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 e6 8. Nf3 exd5 9. e3 O-O 10. b4 c6 11. Be2 a5 12. b5 a4 13. O-O Qa5 14. Qd2 Bg4 15. bxc6 bxc6 16. h3 Bxf3 17. Bxf3 Nd7 18. Rab1 Rfb8 19. Rxb8+ Rxb8 20. Rb1 Rb6 21. Rxb6 Nxb6 22. Qc2 c5 23. Nxd5 Nxd5 24. Bxd5 cxd4 25. Qc8+ Bf8 26. Qd7 Qe1+ 27. Kh2 Qxf2 28. exd4 h5 29. Qe8 Kg7 30. Qe5+ f6 31. Qc7+ Kh6 32. Qc1+ g5 33. Qc7 Qxd4 34. Qd8 Bg7 35. Qd6 g4 36. hxg4 hxg4 37. g3 Kg5 38. Kg2 Qd2+ 39. Kf1 Qe3 40. Bf7 1/2-1/2