[Event "Halle zt"]
[Site "Halle"]
[Date "1963.??.??"]
[Round "?"]
[White "Portisch, Lajos"]
[Black "Ofstad, Per"]
[Result "1-0"]
[WhiteElo ""]
[BlackElo ""]
[ECO "B37"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 g6 6.e4 Bg7 7.Nc2 O-O 8.Be2 d6
9.Be3 Be6 10.O-O Qc8 11.f3 Ne8 12.Rc1 b6 13.Qd2 Ne5 14.b3 f5 15.exf5 Bxf5
16.Nd4 Nf6 17.Nd5 Nxd5 18.cxd5 Qb7 19.h3 Bd7 20.f4 Nf7 21.Ne6 Rfc8 22.Nxg7 Kxg7
23.Bd4+ Kf8 24.Ba1 Rxc1 25.Qxc1 Ke8 26.Qc3 Kd8 27.Qg7 Be8 28.Bg4  1-0

