[Event "Interzonal-13c"]
[Site "Biel"]
[Date "1985.07.19"]
[Round "12"]
[White "Martin Gonzalez, Angel"]
[Black "Petursson, Margeir"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2550"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nc3 Nf6 7. Bc4 O-O 8. Bb3 d6 9. f3 Nd7 10. h4 Nc5 11. h5 Qa5 12. hxg6 hxg6 13. g4 Be6 14. Qd2 Rfc8 15. O-O-O Bxb3 16. Nxb3 Nxb3+ 17. cxb3 Ne5 18. Kb1 Nxf3 19. Qf2 Rxc3 20. Qxf3 Rc7 21. Bd4 Bxd4 22. Rxd4 Rac8 23. Rd5 Qb4 24. a3 Rc3 25. Rh8+ Kxh8 26. Qh1+ Kg7 27. axb4 Rc2 28. Rd3 Re2 29. g5 Rh8 30. Rh3 Rxh3 31. Qxh3 Rxe4 32. Qf3 Re1+ 33. Kc2 b5 34. Qb7 Re5 35. Qxa7 Kf8 36. Qb8+ Kg7 37. Qc7 Kf8 38. Qd8+ Kg7 39. Qe8 Rxg5 40. Qxe7 Rf5 41. Qxd6 Kg8 42. Kd3 1/2-1/2