[Event "IBM"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[Round "4"]
[White "Sosonko, Gennadi"]
[Black "Ribli, Zoltan"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2525"]
[ECO "D97"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 a6 8.Be2 b5
9.Qb3 c5 10.dxc5 Be6 11.Qc2 Qc7 12.Nd4 Bc4 13.Be3 Bxe2 14.Qxe2 Rd8 15.O-O b4
16.Na4 Nxe4 17.Qf3  1/2-1/2

