Ostermeyer, Peter VS Gruenfeld, Yehuda 1984.10.12

[Event "Dortmunder Schachtage-12"]
[Site "Dortmund"]
[Date "1984.10.12"]
[Round "2"]
[White "Ostermeyer, Peter"]
[Black "Gruenfeld, Yehuda"]
[Result "1/2-1/2"]
[WhiteElo "2460"]
[BlackElo "2435"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Be7 7. O-O O-O 8. d4 Nc6 9. Nxd5 exd5 10. dxc5 Bxc5 11. b3 Bf5 12. Bb2 Be4 13. Qd2 Qe7 14. Rac1 Bb6 15. Qg5 f6 16. Qg4 Rae8 17. e3 Nb4 18. Ba3 a5 19. Rfd1 f5 20. Qh5 Rf6 21. Bxb4 axb4 22. Nd4 Ref8 23. Qe2 Bxg2 24. Kxg2 Qe4+ 25. Qf3 Ra8 26. Rc2 Ra5 27. h4 Kf7 28. Qxe4 fxe4 29. Ne2 Rd6 30. Nf4 d4 31. exd4 Rxd4 32. Rxd4 Bxd4 33. Rc4 Bc5 34. Rxe4 Rxa2 35. Nd3 b6 36. Rc4 Ra3 37. Nxc5 bxc5 38. Rxc5 Rxb3 39. Rb5 h6 1/2-1/2