[Event "HUN-ch"]
[Site "Budapest"]
[Date "1971.??.??"]
[Round "12"]
[White "Portisch, Lajos"]
[Black "Sax, Gyula"]
[Result "1-0"]
[WhiteElo "2630"]
[BlackElo "2400"]
[ECO "A35"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.g3 c5 5.Bg2 O-O 6.Nf3 cxd4 7.Nxd4 Nc6 8.O-O d6
9.Nc2 Nd7 10.Bd2 Nb6 11.b3 e6 12.a4 d5 13.a5 Nd7 14.cxd5 Nxa5 15.Ne3 exd5
16.Nexd5 Nc6 17.Be3 Nf6 18.Bc5 Re8 19.Ra2 Be6 20.Rd2 Nd7 21.Be3 Qa5 22.Ne4 Red8
23.Nd6 Rab8 24.Nc4 Qb5 25.Nc7 Qf5 26.Nd6 Qf6 27.Nxe6  1-0

