[Event "Candidats qf2"]
[Site "Palma de Mallorca"]
[Date "1974.??.??"]
[Round "13"]
[White "Petrosian, Tigran V"]
[Black "Portisch, Lajos"]
[Result "1-0"]
[WhiteElo "2640"]
[BlackElo "2645"]
[ECO "D53"]
[PlyCount "79"]

1.Nf3 d5 2.d4 e6 3.c4 Nf6 4.Bg5 Be7 5.Nc3 O-O 6.Rc1 h6 7.Bh4 b6 8.cxd5 Nxd5 9.Nxd5 exd5 10.Bxe7 Qxe7 11.g3 Ba6 12.e3 c5 13.Bxa6 Nxa6 14.O-O Nc7 15.b3 Rac8 16.Re1 Rfd8 17.h4 Ne6 18.Qd3 Qf6 19.Kg2 cxd4 20.exd4 Rxc1 21.Rxc1 Qf4 22.gxf4 Nxf4+ 23.Kg3 Nxd3 24.Rc3 Nb4 25.a3 Na6 26.b4 Nb8 27.Rc7 a5 28.b5 Nd7 29.Kf4 h5 30.Ne5 Nf8 31.Rb7 f6 32.Nc6 Ng6+ 33.Kg3 Rd6 34.Rxb6 Re6 35.Rb8+ Nf8 36.Ra8 Re1 37.Nd8 Kh7 38.b6 Rb1 39.b7 Nd7 40.Rxa5 1-0