[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.31"]
[Round "15"]
[White "Sosonko, Gennadi"]
[Black "Rogoff, Kenneth"]
[Result "1/2-1/2"]
[WhiteElo "2505"]
[BlackElo "2480"]

1. d4 e6 2. c4 Nf6 3. g3 d5 4. Bg2 Be7 5. Nf3 O-O 6. O-O dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bf4 Bd6 11. Nbd2 Nbd7 12. a4 Qb8 13. Rfc1 Rc8 14. Ne5 Bxg2 15. Kxg2 Nb6 16. Nc6 Qb7 17. Ne4 Nbd5 18. Bxd6 Nxe4 19. Na5 Qb6 20. Qxe4 cxd6 21. Rxc8+ Rxc8 22. axb5 Qxb5 23. b3 Nc3 24. Qb7 Qxb7+ 25. Nxb7 Nxe2 26. d5 exd5 27. Rxa6 Rb8 28. Rxd6 Kf8 29. Nc5 Nc3 1/2-1/2