[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1977.01.24"]
[Round "9"]
[White "Sigurjonsson, Gudmundur"]
[Black "Sosonko, Gennadi"]
[Result "1/2-1/2"]
[WhiteElo "2520"]
[BlackElo "2530"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. O-O Nc6 8. Nb3 O-O 9. Bg5 Be6 10. f4 Na5 11. f5 Bc4 12. Kh1 Rc8 13. Bd3 b5 14. Qd2 b4 15. Ne2 d5 16. Nxa5 Qxa5 17. e5 Ne4 18. Bxe4 dxe4 19. f6 exf6 20. Bxf6 Qd5 21. Qe3 Bxe2 22. Qxe2 Rfe8 23. a3 a5 24. axb4 axb4 25. Ra4 Bf8 26. c3 bxc3 1/2-1/2