[Event "Amsterdam IBM"]
[Site "Amsterdam NED"]
[Date "1980.06.30"]
[EventDate "1980.06.27"]
[Round "4"]
[Result "1/2-1/2"]
[White "Zoltan Ribli"]
[Black "Jan Timman"]
[ECO "E17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "65"]

1.Nf3 Nf6 2.c4 b6 3.g3 Bb7 4.Bg2 e6 5.O-O Be7 6.Nc3 O-O 7.d4
Ne4 8.Bd2 Bf6 9.Rc1 c5 10.Ne1 Nd6 11.Bxb7 Nxb7 12.d5 exd5
13.cxd5 d6 14.Nd3 Re8 15.b4 Na6 16.a3 Qd7 17.Re1 Rac8 18.Kg2
b5 19.f3 cxb4 20.axb4 Rc4 21.Ne4 Bd4 22.Qb3 Rec8 23.e3 Bb6
24.Nf4 Qe7 25.h4 Nb8 26.Rxc4 Rxc4 27.Rc1 Rxc1 28.Bxc1 Qc7
29.Bb2 Nd7 30.Kf2 Ne5 31.Bxe5 dxe5 32.Nd3 Nd6 33.Nxd6 1/2-1/2