[Event "interzonal play-off"]
[Site "Portoroz YUG"]
[Date "1971.03.30"]
[Round "1"]
[White "Portisch, Lajos"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[WhiteElo "2630"]
[BlackElo "2620"]
[ECO "E17"]
[EventDate "1971.03.30"]
[PlyCount "41"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3 Ne4 7.Bd2 d6 8.d5 Nxd2 
9.Qxd2 e5 10.h4 Nd7 11.e4 a5 12.Bh3 Nc5 13.Qc2 O-O 14.Na4 c6 15.Nxc5 bxc5 
16.Nd2 Qb6 17.O-O g6 18.Rfd1 Rfb8 19.Rab1 Bf8 20.Bd7 cxd5 21.cxd5 1/2-1/2

[Event "interzonal play-off"]
[Site "Portoroz YUG"]
[Date "1971.??.??"]
[Round "2"]
[White "Smyslov, Vassily"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[WhiteElo "2620"]
[BlackElo "2630"]
[ECO "B92"]
[EventDate "1971.03.30"]
[PlyCount "84"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be6 8.f4 Qc7
9.f5 Bc4 10.Bf3 a5 11.a4 Nc6 12.Bg5 Nb4 13.Bxf6 gxf6 14.Be2 Bxb3 15.Bb5+ 
Kd8 16.cxb3 Qc5 17.Qd2 h5 18.Rd1 Ke7 19.Qf2 Qxf2+ 20.Kxf2 h4 21.Bc4 Bh6 
22.Nd5+ Nxd5 23.Rxd5 b6 24.Rhd1 Rad8 25.b4 axb4 26.Rb5 Rb8 27.Rxb4 Bf4 28.
Rd3 Rhc8 29.Bd5 Rc2+ 30.Kf3 h3 31.g3 Rxh2 32.Rc3 Rg2 33.Rc7+ Kd8 34.Rxf7 
Rxg3+ 35.Kf2 h2 36.Rh7 Rg1 37.Rh8+ Ke7 38.Rh7+ Kf8 39.a5 h1=Q 40.Rxh1 Rxh1
41.a6 Ke7 42.a7 Rbh8 0-1

[Event "interzonal play-off"]
[Site "Portoroz YUG"]
[Date "1971.04.??"]
[Round "3"]
[White "Portisch, Lajos"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[WhiteElo "2630"]
[BlackElo "2620"]
[ECO "A81"]
[EventDate "1971.03.30"]
[PlyCount "74"]

1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.Nf3 Bg7 5.b3 O-O 6.Bb2 d5 7.c4 c6 8.O-O Be6 9.
Ng5 Bf7 10.Nc3 Qe8 11.Qd3 h6 12.Nxf7 Qxf7 13.f3 Nbd7 14.e4 dxc4 15.bxc4 
Nb6 16.c5 Nc4 17.Bc1 Rad8 18.Rb1 Nd7 19.d5 b5 20.dxc6 Nxc5 21.Qc2 a6 22.f4
Bxc3 23.Qxc3 Nxe4 24.Bxe4 fxe4 25.a4 Qd5 26.axb5 axb5 27.Bb2 Rf6 28.Ba1 
Qc5+ 29.Kh1 Qxc6 30.Rbd1 e3+ 31.Kg1 Rd2 32.Rxd2 exd2 33.Qb3 Rd6 34.Qc3 e5 
35.Rd1 Qc5+ 36.Kh1 Qe3 37.fxe5 Rd3 0-1

[Event "interzonal play-off"]
[Site "Portoroz YUG"]
[Date "1971.04.??"]
[Round "4"]
[White "Smyslov, Vassily"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2620"]
[BlackElo "2630"]
[ECO "B24"]
[EventDate "1971.03.30"]
[PlyCount "144"]

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 b6 6.Nh3 Bb7 7.O-O d6 8.f4 h6 9.
f5 Bxc3 10.bxc3 g5 11.Nf2 Qc7 12.Ng4 Ne5 13.Ne3 Nf6 14.Qe2 Rg8 15.Nd5 Bxd5
16.exd5 Kd7 17.Re1 Ke8 18.Rb1 Kf8 19.d4 cxd4 20.cxd4 Nc4 21.Rb4 Rc8 22.Bf1
Na5 23.c4 Qd7 24.Qf3 Rc7 25.Bd3 Qc8 26.Qf1 Qd7 27.Bd2 Kg7 28.Rb5 Nb7 29.h4
g4 30.Qf4 Rh8 31.a4 Qc8 32.Kg2 Qd7 33.Kh2 Qc8 34.Rbb1 Qd7 35.Rb5 Qc8 36.
Kg2 Qd7 37.Be2 Qc8 38.Kh2 Kf8 39.Rbb1 Na5 40.Bxa5 bxa5 41.Bd3 Rb7 42.Qd2 
Rb4 43.Rxb4 axb4 44.Qxb4 Qc7 45.Rb1 Kg7 46.Rb2 Rd8 47.a5 Nd7 48.Qa4 Rb8 
49.Rxb8 Qxb8 50.Qb5 Qc7 51.Kg2 Nf6 52.Kf2 Qd8 53.Qb4 Qc8 54.Kg2 Qd8 55.Kh2
Qc7 56.Qb5 Qd8 57.Bf1 Qc8 58.Qb1 Qd8 59.Qe1 Qc7 60.a6 Qc8 61.Qxe7 Qxa6 62.
Qe2 Qa1 63.c5 Qxd4 64.c6 Qc3 65.Bg2 a5 66.Qe7 a4 67.Qxd6 a3 68.c7 a2 69.
Qa6 Qxc7 70.Qxa2 Qe5 71.Qc2 Ne8 72.Qa4 h5 1/2-1/2

[Event "interzonal play-off"]
[Site "Portoroz YUG"]
[Date "1971.04.??"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[WhiteElo "2630"]
[BlackElo "2620"]
[ECO "D07"]
[EventDate "1971.03.30"]
[PlyCount "112"]

1.d4 d5 2.c4 Nc6 3.Nf3 Bg4 4.Qa4 Bxf3 5.gxf3 Nf6 6.Nc3 e6 7.Bg5 dxc4 8.
O-O-O Be7 9.Qxc4 Nd5 10.Bxe7 Ncxe7 11.Kb1 Nxc3+ 12.Qxc3 Nd5 13.Qc1 Qe7 14.
Rg1 g6 15.e4 Nb6 16.Qc5 Qxc5 17.dxc5 Nd7 18.c6 bxc6 19.Rc1 Ne5 20.Rc3 c5 
21.f4 Nd7 22.Bb5 a6 23.Bc6 Rd8 24.Rxc5 Ke7 25.Rc4 Nb6 26.Rc2 Rd4 27.Bb7 
Nc4 28.Bxa6 Nd2+ 29.Kc1 Nxe4 30.Rxc7+ Kf6 31.Rd1 Rxd1+ 32.Kxd1 Ra8 33.Rc6 
Nxf2+ 34.Ke2 Ne4 35.a4 Rb8 36.Ke3 Rxb2 37.Kxe4 Rxh2 38.Bc4 Rh5 39.Rb6 Ra5 
40.Ra6 Rc5 41.Bb5 h5 42.Ra7 Rc8 43.a5 h4 44.Kf3 Rc3+ 45.Kg2 h3+ 46.Kh2 g5 
47.Be8 Kf5 48.Rxf7+ Kg4 49.Ba4 Rd3 50.Rd7 Ra3 51.Bd1+ Kf5 52.Bc2+ Kf6 53.
fxg5+ Kxg5 54.Rg7+ Kf6 55.Rg6+ Ke7 56.Rg7+ Kd6 1/2-1/2

[Event "interzonal play-off"]
[Site "Portoroz YUG"]
[Date "1971.04.07"]
[Round "6"]
[White "Smyslov, Vassily"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2620"]
[BlackElo "2630"]
[ECO "B26"]
[EventDate "1971.03.30"]
[PlyCount "42"]

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3 Rb8 7.Qd2 b5 8.Nf3 b4 9.
Nd1 Nd4 10.Nh4 e5 11.f4 exf4 12.Bxf4 Ne7 13.O-O h6 14.Be3 g5 15.Nf3 Nxf3+ 
16.Bxf3 Nc6 17.Bg2 Be6 18.a3 a5 19.axb4 axb4 20.c3 bxc3 21.bxc3 Ne5 
1/2-1/2

