[Event "Amsterdam IBM"]
[Site "Amsterdam NED"]
[Date "1975.07.11"]
[EventDate "1975.07.08"]
[Round "4"]
[Result "1/2-1/2"]
[White "Yuri S Razuvaev"]
[Black "Gennady Borisovich Sosonko"]
[ECO "B50"]
[WhiteElo "2515"]
[BlackElo "2470"]
[PlyCount "30"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bc4 e6 5. Qe2 Be7 6. Bb3 O-O
7. O-O b6 8. d3 Ba6 9. Bf4 Nc6 10. Nbd2 d5 11. e5 Nh5 12. Bg3
b5 13. Rfd1 Nxg3 14. hxg3 b4 15. c4 d4 1/2-1/2