[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1986.01.28"]
[Round "9"]
[White "De Firmian, Nick E"]
[Black "Sosonko, Gennadi"]
[Result "0-1"]
[WhiteElo "2520"]
[BlackElo "2525"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Nxc6 bxc6 7. e5 Ng8 8. Bc4 Bg7 9. Qf3 f5 10. Bf4 e6 11. O-O-O Qc7 12. h4 Nh6 13. Rhe1 Nf7 14. Qg3 Rb8 15. Kb1 Rb4 16. Bb3 O-O 17. a3 Rxf4 18. Qxf4 Bxe5 19. Qd2 d5 20. g3 Bd7 21. h5 g5 22. Re2 Bf6 23. Qe3 Nd6 24. Qc5 Qb8 25. g4 Nb7 26. Qe3 f4 27. Qd2 Nc5 28. Ka2 Qb6 29. Qe1 Rb8 30. Na4 Nxa4 31. Rxe6 Qd8 32. Rxc6 Bxc6 33. Qe6+ Kg7 34. Qxc6 Nb6 35. h6+ Kxh6 36. c3 Kg7 37. f3 Rc8 38. Qb5 Qe7 39. Bc2 Qc5 0-1