[Event "Rio de Janeiro Interzonal"]
[Site "Rio de Janeiro"]
[Date "1979.??.??"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Sax, Gyula"]
[Result "1-0"]
[WhiteElo "2640"]
[BlackElo "2590"]
[ECO "A10"]

1.c4 g6 2.e4 e5 3.d4 Nf6 4.Nf3 Bb4+ 5.Bd2 Bxd2+ 6.Qxd2 Nxe4 7.Qe3 d5 8.dxe5 Nc6
9.Na3 Bf5 10.Nc2 Ng5 11.Nxg5 Bxc2 12.e6 Bf5 13.exf7+ Kf8 14.O-O-O d4 15.Qf4 Qe7
16.g4 h6 17.Nh3 Be6 18.Re1 g5 19.Qg3 Qxf7 20.b3 a5 21.Bg2 Bxc4 22.Bxc6 bxc6
23.bxc4 Qxc4+ 24.Kb1 d3 25.Qe5 Rb8+ 26.Ka1 Rh7 27.Re4 Qc2 28.Rhe1 Kg8 29.Qe6+ Rf7
30.Qg6+  1-0

