[Event "Petropolis Interzonal"]
[Site "Petropolis"]
[Date "1973.??.??"]
[Round "2"]
[White "Smyslov, Vassily"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2600"]
[BlackElo "2645"]
[ECO "A29"]

1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.g3 Bb4 5.Bg2 O-O 6.O-O e4 7.Ng5 Bxc3 8.dxc3 Re8
9.f3 d6 10.b3 Bd7 11.Nh3 exf3 12.exf3 Ne7 13.Bg5 Nf5 14.Qd3 h6 15.Bd2 Ne7
16.Rfe1 Bf5 17.Qf1 Qd7 18.g4 Bh7 19.Qf2 a5 20.Nf4 Ng6 21.h4 Nxf4 22.Bxf4 Qc6
23.Rxe8+ Rxe8 24.Re1 Rxe1+ 25.Qxe1 Kf8 26.g5 Nh5 27.Be3 hxg5 28.hxg5 Qe8
29.Qd2 Ng3 30.c5 dxc5 31.Bxc5+ Kg8 32.Bf2 Nf5 33.c4 Bg6 34.Qxa5 Qd8 35.f4 Qd1+
36.Qe1 Qg4 37.Qd2 Nd6 38.Kf1 Be4 39.Bxe4 Nxe4 40.Qe3 Qd1+ 41.Be1 Nd6  1/2-1/2

