[Event "Amsterdam Interzonal"]
[Site "Amsterdam"]
[Date "1964.??.??"]
[Round "1"]
[White "Bilek, Istvan"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "D02"]

1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.d4 O-O 6.Nbd2 b6 7.c4 Bb7 8.Ne5 Nbd7
9.cxd5 Nxd5 10.Ndc4 c5 11.Nxd7 Qxd7 12.dxc5 Bxc5 13.Be3 Bxe3 14.Nxe3 Rfd8
15.Nxd5 Bxd5 16.Bxd5 Qxd5 17.Qxd5 Rxd5 18.Rfd1 Rad8 19.Rxd5 Rxd5 20.Rc1 g6
21.Rc7 Rd2 22.Rxa7 Rxb2 23.e3 b5 24.a4 Ra2 25.a5 b4 26.Rb7 Rxa5 27.Rxb4 Kg7
28.Kg2 h5 29.h4 Ra2 30.Rb7 Kf6  1/2-1/2

