[Event "Interzonal-13c"]
[Site "Biel"]
[Date "1985.07.26"]
[Round "17"]
[White "Petursson, Margeir"]
[Black "Andersson, Ulf"]
[Result "1/2-1/2"]
[WhiteElo "2550"]
[BlackElo "2590"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6 7. Bxf6 Bxf6 8. Qc2 c5 9. dxc5 Nc6 10. cxd5 exd5 11. Bb5 d4 12. Rd1 Qa5 13. Nxd4 Nxd4 14. exd4 Bg4 15. f3 Be6 16. O-O Rad8 17. d5 Bd7 18. Bxd7 Qxc5+ 19. Rf2 Bxc3 20. Qxc3 Qxc3 21. bxc3 Rxd7 22. c4 Rc8 23. Rd4 Kf8 24. Re2 g6 25. Kf2 Rc5 26. g4 b5 27. cxb5 Rxb5 28. d6 g5 29. Red2 Rc5 30. Ke3 Kg7 31. f4 Kf6 32. Ke4 Rc6 33. f5 Ra6 34. h3 Rc6 35. R2d3 Ra6 36. a3 Rc6 37. Rd5 Rc4+ 38. R5d4 Rc6 39. Ke3 Ra6 40. Kf3 Rc6 41. Ke4 Ra6 42. Rd5 Ra4+ 43. Kf3 Ra6 44. Kg3 Ra4 45. h4 Rc4 46. h5 Ra4 47. Kh3 Rc4 48. Ra5 Rc6 49. a4 Rcxd6 50. Rxd6+ Rxd6 51. Rxa7 Rd3+ 52. Kg2 Rd4 53. Kf3 Rf4+ 54. Kg3 Rb4 55. a5 Ra4 56. Ra6+ Ke5 57. Rxh6 Rxa5 58. Rc6 Ra3+ 59. Kf2 Ra4 60. Kf3 Ra3+ 61. Ke2 Ra4 1/2-1/2