[Event "Biel Interzonal"]
[Site "Biel"]
[Date "1976.??.??"]
[Round "2"]
[White "Csom, Istvan"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[WhiteElo "2490"]
[BlackElo "2625"]
[ECO "A06"]

1.Nf3 d5 2.b3 Bg4 3.Bb2 Nd7 4.e3 Ngf6 5.h3 Bh5 6.Be2 e6 7.c4 c6 8.d3 Bb4+
9.Nbd2 Bxf3 10.gxf3 e5 11.a3 Bd6 12.cxd5 cxd5 13.d4 O-O 14.Ra2 Re8 15.Qa1 Rc8
16.O-O exd4 17.Bxd4 Nh5 18.Bb5 a6 19.Bxd7 Qxd7 20.Kg2 Re6 21.Rh1 Rg6+ 22.Kf1 Qb5+
23.Ke1 Rg2 24.Nf1 Qxb3 25.Rb2 Qd3 26.Rxb7 Rxf2  0-1

