[Event "Siegen olm"]
[Site "Siegen"]
[Date "1970.??.??"]
[Round "7"]
[White "Tatai, Stefano"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo ""]
[BlackElo ""]
[ECO "B85"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qc7 5.Nc3 e6 6.Be2 a6 7.O-O Nf6 8.Be3 d6
9.f4 Bd7 10.Bf3 Be7 11.Kh1 O-O 12.Qe1 Rac8 13.Qg3 Kh8 14.Rad1 b5 15.a3 Rfd8
16.e5 dxe5 17.Nxc6 Bxc6 18.Rxd8+ Bxd8 19.fxe5 Bxf3 20.Rxf3 Ng8 21.Ne4 f5
22.Nd6 Rb8 23.b4 Qd7  1/2-1/2

