[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Bilek, Istvan"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[ECO "D02"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.d4 O-O 6.Nbd2 b6 7.c4 Bb7 8.Ne5 
Nbd7 9.cxd5 Nxd5 10.Ndc4 c5 11.Nxd7 Qxd7 12.dxc5 Bxc5 13.Be3 Bxe3 14.Nxe3 
Rfd8 15.Nxd5 Bxd5 16.Bxd5 Qxd5 17.Qxd5 Rxd5 18.Rfd1 Rad8 19.Rxd5 Rxd5 20.
Rc1 g6 21.Rc7 Rd2 22.Rxa7 Rxb2 23.e3 b5 24.a4 Ra2 25.a5 b4 26.Rb7 Rxa5 27.
Rxb4 Kg7 28.Kg2 h5 29.h4 Ra2 30.Rb7 Kf6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Bronstein, David"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "C28"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.e4 e5 2.Nc3 Nc6 3.Bc4 Nf6 4.d3 Bb4 5.Bg5 h6 6.Bxf6 Bxc3+ 7.bxc3 Qxf6 8.
Ne2 d6 9.Qd2 Be6 10.Bb5 Qg5 11.Ng3 O-O 12.Bxc6 bxc6 13.c4 Rab8 14.Qxg5 
hxg5 15.h3 Rb2 16.Kd2 Rfb8 17.Ne2 Kf8 18.f3 Ke7 19.Nc3 Rh8 20.Rhb1 Rb6 21.
Rb3 g6 22.Ra3 Rb7 23.Rb1 Rxb1 24.Nxb1 Ra8 25.Nc3 f5 26.Nd1 Kd7 27.Ne3 f4 
28.Nd1 c5 29.Nc3 c6 30.Rb3 Kc7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Darga, Klaus"]
[Black "Spassky, Boris"]
[Result "1-0"]
[ECO "E18"]
[EventDate "1964.05.20"]
[PlyCount "191"]

1.Nf3 Nf6 2.c4 e6 3.g3 b6 4.Bg2 Bb7 5.O-O Be7 6.Nc3 O-O 7.d4 Bb4 8.Qb3 
Bxc3 9.Qxc3 d6 10.b3 Nbd7 11.Bb2 Re8 12.Rad1 Rc8 13.Rfe1 Qe7 14.d5 e5 15.
Nh4 Nc5 16.f4 Nfd7 17.e3 a5 18.Qc2 f6 19.a3 Ra8 20.Bc3 Qf7 21.Rf1 exf4 22.
exf4 a4 23.b4 Nb3 24.Nf5 Nf8 25.Nd4 Nxd4 26.Bxd4 Qg6 27.Qxg6 hxg6 28.Rfe1 
Kf7 29.Kf2 Ba6 30.Bf1 f5 31.Rxe8 Rxe8 32.Re1 Rd8 33.Bd3 Nd7 34.b5 Bb7 35.
Bc2 Nc5 36.h4 Nb3 37.Bc3 Bc8 38.Re3 Bd7 39.Re1 Rg8 40.Re3 Nc5 41.Bd4 Ra8 
42.Ke1 Ne4 43.Bd1 Re8 44.Bxa4 Nxg3 45.Rxe8 Bxe8 46.Bc2 Nh5 47.Be3 Ke7 48.
a4 Kd7 49.a5 bxa5 50.Kd2 Ng3 51.Kc3 g5 52.hxg5 Bh5 53.Kb3 Be2 54.Bd2 a4+ 
55.Kb4 a3 56.Bb3 Ne4 57.Be3 g6 58.Kxa3 Nc5 59.Bxc5 dxc5 60.Ka4 Bd3 61.Ka5 
Be2 62.b6 cxb6+ 63.Kxb6 Kd6 64.Kb7 Bd3 65.Kc8 Be2 66.Kb7 Bd3 67.Ka6 Bf1 
68.Ka5 Bd3 69.Ka4 Bf1 70.Ka3 Be2 71.Kb2 Ke7 72.Kc3 Kd6 73.Bc2 Ke7 74.Bd3 
Bd1 75.Kd2 Bb3 76.Be2 Kd6 77.Kc3 Ba4 78.Bd3 Bd1 79.Kd2 Bb3 80.Kc1 Ke7 81.
Kb2 Bd1 82.Bc2 Be2 83.Kc3 Kd6 84.Ba4 Ke7 85.Bb5 Kd8 86.d6 Bf3 87.Kb3 Bd1+ 
88.Ka3 Bc2 89.Bc6 Bd1 90.Ba4 Be2 91.Bb5 Bd1 92.Bc6 Be2 93.Ka4 Bxc4 94.Ka5 
Be2 95.Bb5 c4 96.Ba4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Evans, Larry Melvyn"]
[Black "Perez Perez, Francisco Jose"]
[Result "1/2-1/2"]
[ECO "A70"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.d4 e6 2.c4 c5 3.d5 exd5 4.cxd5 d6 5.Nc3 g6 6.Nf3 Bg7 7.Bf4 Nf6 8.Qa4+ 
Bd7 9.Qb3 Qc7 10.e4 O-O 11.Be2 b5 12.Nxb5 Bxb5 13.Bxb5 Nxe4 14.O-O a6 15.
Bd3 Nf6 16.Nd2 Nh5 17.Be3 Nd7 18.Rab1 Ne5 19.Nc4 f5 20.Nxe5 Bxe5 21.f4 Bg7
22.Qc4 a5 23.a3 Rfe8 24.Bf2 a4 25.b4 axb3 26.Rxb3 Ra7 27.Rfb1 Rea8 28.Qc1 
Rc8 29.Bc4 Rca8 30.g3 Rc8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Ivkov, Borislav"]
[Black "Gligoric, Svetozar"]
[Result "1/2-1/2"]
[ECO "B45"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Ndb5 Bb4 7.a3 Bxc3+ 8.
Nxc3 d5 9.exd5 Nxd5 10.Bd2 Nxc3 11.Bxc3 Qxd1+ 12.Rxd1 e5 13.Bc4 Bf5 14.Rd2
f6 15.O-O Rd8 16.Rxd8+ Kxd8 17.Rd1+ Kc7 18.Bb3 Rd8 19.Rxd8 Kxd8 20.Kf1 Nd4
21.Bxd4 exd4 22.Ke2 Kc7 23.Kd2 Kd6 24.f4 a5 25.c3 Kc5 26.Bf7 dxc3+ 27.Kxc3
b6 28.b4+ axb4+ 29.axb4+ Kd6 30.Kd4 h6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Larsen, Bent"]
[Black "Pachman, Ludek"]
[Result "1-0"]
[ECO "B13"]
[EventDate "1964.05.20"]
[PlyCount "119"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Nf3 Nf6 5.c3 Nc6 6.Bd3 Bg4 7.Bf4 a6 8.Nbd2 
e6 9.O-O Bd6 10.Bxd6 Qxd6 11.Qe1 Ne7 12.c4 dxc4 13.Nxc4 Qd8 14.Nfe5 Bf5 
15.Qb4 O-O 16.Bxf5 Nxf5 17.Qxb7 Qxd4 18.Rac1 Qa7 19.Qxa7 Rxa7 20.Rfd1 Nd5 
21.Na5 Nfe7 22.Kf1 g6 23.g3 Rc8 24.Rxc8+ Nxc8 25.Rc1 Nce7 26.a3 Kf8 27.b4 
f6 28.Nd3 Kf7 29.Nc5 Ra8 30.Nc4 Nf5 31.Ne4 Ke7 32.Na5 Nd4 33.Nc6+ Nxc6 34.
Rxc6 Kd7 35.Rxa6 Rxa6 36.Nc5+ Kc6 37.Nxa6 Kb5 38.Nc5 e5 39.Ke1 Nb6 40.Ke2 
f5 41.Ne6 Ka4 42.Nf8 Kxa3 43.Nxh7 Kxb4 44.Nf8 Kc5 45.Nxg6 Kd6 46.Kd3 Ke6 
47.Nh4 Nd7 48.Ng2 Nf6 49.Ke2 Ng4 50.h3 Nf6 51.f3 Kf7 52.g4 fxg4 53.fxg4 
Ne4 54.Ke3 Nd6 55.Kf3 Kg6 56.h4 Kh6 57.Ne3 Kg6 58.Nf1 Nc4 59.Ng3 Nd2+ 60.
Ke2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Lengyel, Levente"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "D02"]
[EventDate "1964.05.20"]
[PlyCount "121"]

1.Nf3 d5 2.g3 Nc6 3.d4 Nf6 4.Bg2 Bf5 5.c4 dxc4 6.Qa4 Nd7 7.Qxc4 Nb6 8.Qb3 
e6 9.O-O Qd5 10.Qxd5 exd5 11.b3 O-O-O 12.Ba3 Bxa3 13.Nxa3 Rhe8 14.e3 Nb4 
15.Rfc1 Kb8 16.Ne1 c6 17.Nac2 Nxc2 18.Nxc2 Nc8 19.a4 Nd6 20.Na3 Re7 21.b4 
Be4 22.Bf1 Bf3 23.Nb1 Ne4 24.Ra2 g5 25.Nd2 Nxd2 26.Rxd2 h5 27.Bg2 Bxg2 28.
Kxg2 f5 29.Kf3 Re4 30.b5 cxb5 31.axb5 f4 32.gxf4 gxf4 33.Rg1 fxe3 34.fxe3 
Rf8+ 35.Ke2 Rg4 36.Rg3 Rc8 37.Kd3 Rxg3 38.hxg3 Rg8 39.Rf2 Kc7 40.Rf5 Rd8 
41.Rxh5 Kb6 42.Rh7 Rg8 43.Rh5 Kxb5 44.Rxd5+ Kc6 45.Rc5+ Kd6 46.Ra5 a6 47.
Rh5 Rxg3 48.Rh6+ Kc7 49.d5 a5 50.Kd4 a4 51.e4 a3 52.Rh7+ Kb6 53.Rh2 Kb5 
54.d6 Kc6 55.e5 Rg4+ 56.Kc3 Rg3+ 57.Kd4 Rg1 58.Ke4 b5 59.Rc2+ Kb7 60.d7 
Re1+ 61.Kf3 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Quinones Carillo, Oscar"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "B09"]
[EventDate "1964.05.20"]
[PlyCount "50"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nbd7 7.e5 Ne8 8.Qe2 c5 
9.Be3 cxd4 10.Bxd4 dxe5 11.fxe5 Nc7 12.Bc4 Nb6 13.Bxb6 axb6 14.Rd1 Qe8 15.
Nd4 Ra5 16.Ncb5 Nxb5 17.Bxb5 Bd7 18.a4 Bxb5 19.axb5 Qb8 20.e6 Bxd4 21.Rxd4
Ra1+ 22.Rd1 Rxd1+ 23.Kxd1 Rd8+ 24.Kc1 Qa7 25.exf7+ Kf8 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Reshevsky, Samuel Herman"]
[Black "Benko, Pal"]
[Result "1/2-1/2"]
[ECO "A32"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Nb5 O-O 7.a3 Bxc3+ 8.
Nxc3 d5 9.cxd5 exd5 10.e3 Nc6 11.Be2 Bf5 12.O-O d4 13.exd4 Nxd4 14.Be3 
Nxe2+ 15.Nxe2 Bd3 16.Re1 Ng4 17.Nf4 Nxe3 18.Rxe3 Bf5 19.Qf3 Qd4 20.Rb3 Be4
21.Qe3 Rad8 22.Re1 Qxe3 23.Rbxe3 Bc6 24.Nd3 Rfe8 25.Rxe8+ Bxe8 26.f3 Kf8 
27.Nc5 Bc6 28.Kf2 b6 29.Ne4 Bxe4 30.Rxe4 Rd2+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Rossetto, Hector Decio"]
[Black "Foguelman, Alberto"]
[Result "1/2-1/2"]
[ECO "D91"]
[EventDate "1964.05.20"]
[PlyCount "59"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5 Ne4 6.cxd5 Nxc3 7.bxc3 Qxd5 8.e3
Qa5 9.Qb3 c5 10.Bc4 e6 11.O-O Nc6 12.Bf4 cxd4 13.cxd4 O-O 14.Rac1 Qd8 15.
Be2 Na5 16.Qa3 b6 17.Bc7 Qd5 18.Ne5 Bb7 19.Bf3 Qb5 20.Rb1 Qa6 21.Rfc1 Bxf3
22.gxf3 Bxe5 23.Bxe5 Qe2 24.Rb2 Qxf3 25.Rbc2 h5 26.Qe7 b5 27.Rc7 Nc4 28.
Qg5 Rac8 29.R1xc4 bxc4 30.Qxg6+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Tringov, Georgi"]
[Black "Stein, Leonid"]
[Result "0-1"]
[ECO "C87"]
[EventDate "1964.05.20"]
[PlyCount "126"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4 exd4 7.Re1 O-O 8.e5 
Ne8 9.Bf4 d5 10.Bxc6 bxc6 11.Nxd4 Bd7 12.Nb3 g6 13.Nc3 Ng7 14.Bh6 Re8 15.
Bxg7 Kxg7 16.Na4 Bf8 17.Qd4 Kg8 18.Nac5 Bf5 19.Qa4 Bxc2 20.Qxc6 Bxb3 21.
Nxb3 Re6 22.Qc2 Qe7 23.f4 c5 24.Qf2 Qa7 25.Rad1 c4 26.Nd4 Bc5 27.Kh1 Rb8 
28.f5 gxf5 29.Qf4 Bxd4 30.Rxd4 Rxb2 31.Rxd5 Qf2 32.Qxf2 Rxf2 33.Rc5 Rc2 
34.Rf1 Rg6 35.Rg1 c3 36.a4 Rb6 37.h3 Rg6 38.a5 Kg7 39.Rc4 Rg3 40.Kh2 Rg6 
41.h4 Rg4 42.Rxg4+ fxg4 43.Re1 Ra2 44.e6 fxe6 45.Rxe6 Rxa5 46.Rc6 Ra3 47.
Kg3 h5 48.Kf4 a5 49.Kg5 Rb3 50.Rc7+ Kf8 51.Rc4 a4 52.Rxa4 Rb5+ 53.Kf4 Rc5 
54.Ra1 c2 55.Rc1 Ke7 56.Ke4 Kd6 57.Kd4 Kc6 58.Kd3 Kd5 59.Rxc2 Rxc2 60.Kxc2
Ke4 61.Kd2 Kf4 62.Ke2 Kg3 63.Kf1 Kh2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.20"]
[Round "1"]
[White "Vranesic, Zvonko"]
[Black "Porath, Yosef"]
[Result "1/2-1/2"]
[ECO "E42"]
[EventDate "1964.05.20"]
[PlyCount "112"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 d5 6.a3 Bxc3+ 7.Nxc3 cxd4 8.exd4 
Nc6 9.Be3 O-O 10.Rc1 Re8 11.Be2 e5 12.Nxd5 Nxd5 13.cxd5 Qxd5 14.O-O Nxd4 
15.Bc4 Qd6 16.f4 Nf5 17.Qxd6 Nxd6 18.fxe5 Rxe5 19.Rcd1 Be6 20.Bxe6 Rxe6 
21.Bc5 Ne8 22.Rd7 b6 23.Rdxf7 Nf6 24.Re7 Rxe7 25.Bxe7 Kf7 26.Bb4 Re8 27.
Rf2 Rd8 28.g4 Kg6 29.h3 Rd3 30.Kg2 Nd5 31.Bf8 Ne3+ 32.Kh2 Nd1 33.Rc2 Kf7 
34.Bb4 a5 35.Rc7+ Ke6 36.Bf8 g6 37.Re7+ Kd5 38.Rxh7 Nxb2 39.Rg7 Rf3 40.Be7
Re3 41.Bf6 Nd3 42.Rd7+ Kc6 43.Re7 Rxe7 44.Bxe7 Kd7 45.Bf6 b5 46.Kg3 b4 47.
axb4 axb4 48.Kh4 Ke6 49.Bd4 Ne5 50.Ba1 Nf3+ 51.Kg3 Ne1 52.Kf4 b3 53.Kg5 
Kf7 54.Bc3 Nf3+ 55.Kh6 g5 56.Ba1 Ke6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Benko, Pal"]
[Black "Evans, Larry Melvyn"]
[Result "1/2-1/2"]
[ECO "A30"]
[EventDate "1964.05.20"]
[PlyCount "53"]

1.c4 c5 2.g3 g6 3.Bg2 Bg7 4.Nc3 Nc6 5.Nf3 a6 6.O-O e5 7.a3 Nge7 8.Rb1 Rb8 
9.b4 d6 10.bxc5 dxc5 11.d3 O-O 12.Ne1 Be6 13.Nc2 f5 14.Bg5 Qd6 15.Qd2 b6 
16.Ne3 h6 17.Bxe7 Nxe7 18.Ned5 Bxd5 19.Nxd5 Nxd5 20.Bxd5+ Kh7 21.Rb3 Bf6 
22.Rfb1 Bd8 23.a4 Bc7 24.Kg2 Kg7 25.Kg1 Kh7 26.Kg2 Kg7 27.Kg1 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Berger, Bela"]
[Black "Reshevsky, Samuel Herman"]
[Result "0-1"]
[ECO "E99"]
[EventDate "1964.05.20"]
[PlyCount "68"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 
9.Ne1 Nd7 10.f3 f5 11.Be3 f4 12.Bf2 g5 13.b4 Nf6 14.c5 Ng6 15.Rc1 Rf7 16.
cxd6 cxd6 17.Nb5 a6 18.Nc3 Bd7 19.Na4 g4 20.g3 fxg3 21.hxg3 Bh6 22.Rc3 Bb5
23.Nb6 Rb8 24.Bxb5 axb5 25.Qe2 gxf3 26.Rxf3 Qc7 27.Nc2 Rbf8 28.Na3 Rg7 29.
Nxb5 Qd8 30.Kh1 Ng4 31.Bg1 Nf4 32.gxf4 Qh4+ 33.Bh2 Bxf4 34.Rxf4 Rxf4 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Bilek, Istvan"]
[Black "Lengyel, Levente"]
[Result "1/2-1/2"]
[ECO "E19"]
[EventDate "1964.05.20"]
[PlyCount "61"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 
Nxc3 9.Qxc3 Be4 10.Ne1 Bxg2 11.Nxg2 d6 12.b3 c5 13.Qf3 Nd7 14.dxc5 dxc5 
15.Bf4 Qc8 16.Rad1 Nf6 17.Ne3 Qa6 18.a4 Rad8 19.Nc2 Qc8 20.Be5 Rxd1 21.
Rxd1 Rd8 22.Rd3 h6 23.Bxf6 Bxf6 24.Rxd8+ Qxd8 25.Qd3 Qc7 26.f4 g6 27.Kg2 
Qd8 28.Qxd8+ Bxd8 29.e4 f5 30.Kf3 Kf7 31.h3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Foguelman, Alberto"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "D59"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nc3 h6 7.Bh4 b6 8.cxd5 Nxd5
9.Bxe7 Qxe7 10.Rc1 Nxc3 11.Rxc3 Bb7 12.Bd3 Rc8 13.O-O Nd7 14.Qa4 c5 15.
Rfc1 a6 16.Bb1 b5 17.Qc2 g6 18.dxc5 Bxf3 19.gxf3 b4 20.Rc4 Ne5 21.Rxb4 
Qg5+ 22.Kh1 Nxf3 23.Qd1 Qh5 24.h4 Rd8 25.Qa4 Rd2 26.Kg2 Ne5 27.Rf4 g5 28.
hxg5 Qxg5+ 29.Kh1 Qh5+ 30.Kg2 Kh8 31.Bh7 Kxh7 32.Qe4+ Qg6+ 33.Qxg6+ Kxg6 
34.b4 Nd3 35.Rg4+ Kf6 36.Rf1 Rxa2 37.Rd4 Rg8+ 38.Kf3 Ne5+ 39.Ke4 Nc6 40.
Rc4 h5 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Gligoric, Svetozar"]
[Black "Rossetto, Hector Decio"]
[Result "1-0"]
[ECO "C42"]
[EventDate "1964.05.20"]
[PlyCount "111"]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 Qe7 6.d3 Nf6 7.Bg5 Qxe2+ 8.
Bxe2 Be7 9.Nc3 h6 10.Be3 Nc6 11.O-O Bd7 12.a3 O-O 13.d4 a6 14.h3 Rfe8 15.
Rad1 Bf8 16.Rfe1 Ne7 17.d5 g6 18.g4 Bg7 19.Nh2 g5 20.Nf1 Ng6 21.Ng3 Re7 
22.Bf3 Rae8 23.Bd2 Rxe1+ 24.Rxe1 Rxe1+ 25.Bxe1 Nf4 26.Kh2 h5 27.gxh5 Nxh3 
28.Nce2 Nf4 29.b3 Bg4 30.Bxg4 Nxg4+ 31.Kg1 Nxe2+ 32.Nxe2 Nf6 33.Bd2 Bh6 
34.Ng3 Nxd5 35.Nf5 Kh7 36.c4 Nf6 37.Ng3 g4 38.Ba5 b6 39.Bc3 Bg5 40.Bxf6 
Bxf6 41.Nf5 Be5 42.a4 c6 43.Kf1 Bf4 44.Ke2 d5 45.cxd5 cxd5 46.Kd3 b5 47.
axb5 axb5 48.Kd4 Bb8 49.Kxd5 Ba7 50.Ke4 Bxf2 51.Kf4 g3 52.Kf3 Be1 53.Kg2 
Bf2 54.Nxg3 Bxg3 55.Kxg3 Kh6 56.Kh4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Pachman, Ludek"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "D94"]
[EventDate "1964.05.20"]
[PlyCount "71"]

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 g6 5.Nf3 Bg7 6.Be2 O-O 7.O-O e6 8.b3 Re8 9.
Bb2 b6 10.Bd3 Bb7 11.Rc1 Nbd7 12.Qe2 a6 13.Rfd1 Qb8 14.Ne5 c5 15.f4 cxd4 
16.exd4 dxc4 17.bxc4 Qd6 18.Qf2 Rac8 19.Bb1 Red8 20.Kh1 Qb8 21.a4 Qa8 22.
Re1 Nh5 23.Ne4 Ndf6 24.Ng5 Rc7 25.d5 exd5 26.Qxb6 Qc8 27.Ngxf7 Rf8 28.Nd6 
Qb8 29.Ba3 dxc4 30.Nxb7 Rxb7 31.Qe6+ Kh8 32.Bxf8 Qxf8 33.Rxc4 Re7 34.Qxe7 
Qxe7 35.Nxg6+ hxg6 36.Rxe7 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Perez Perez, Francisco Jose"]
[Black "Vranesic, Zvonko"]
[Result "1-0"]
[ECO "E14"]
[EventDate "1964.05.20"]
[PlyCount "67"]

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.Nc3 Bb7 5.e3 Be7 6.Bd3 d5 7.O-O Nbd7 8.b3 O-O 
9.Bb2 Ne4 10.Bxe4 dxe4 11.Nd2 f5 12.f3 exf3 13.Nxf3 Bf6 14.Qc2 c5 15.Rad1 
Qe7 16.Kh1 Rad8 17.Ba3 g5 18.e4 g4 19.Ng1 Qg7 20.exf5 Bxd4 21.fxe6 Nf6 22.
Rf5 Rfe8 23.Nge2 Rxe6 24.Nxd4 Rxd4 25.Rdf1 g3 26.Bc1 h6 27.h3 Qg6 28.Rg5 
Qxg5 29.Bxg5 Ne4 30.Be3 Rd7 31.Nd5 Nf2+ 32.Bxf2 Rf7 33.Qd3 Rxf2 34.Qxg3+ 
1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Porath, Yosef"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "E60"]
[EventDate "1964.05.20"]
[PlyCount "103"]

1.Nf3 Nf6 2.b3 d6 3.d4 g6 4.Bb2 Bg7 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.dxe5 
Ng4 9.c4 dxe5 10.h3 Nh6 11.e4 Re8 12.Nc3 c6 13.Qd2 f6 14.Rad1 Nf7 15.Na4 
Qe7 16.Qc1 Bf8 17.Ne1 Nb6 18.Nc3 Ng5 19.h4 Ne6 20.Nc2 Qg7 21.Ba3 Bxa3 22.
Qxa3 Qe7 23.Qxe7 Rxe7 24.Rd6 Kf7 25.f4 exf4 26.gxf4 Rd7 27.Rxd7+ Bxd7 28.
Kh2 a5 29.e5 fxe5 30.fxe5+ Ke7 31.Ne4 Rf8 32.Rxf8 Kxf8 33.Bh3 Nf4 34.Bxd7 
Nxd7 35.Nd6 b6 36.Nd4 Nxe5 37.Nc8 c5 38.Nb5 Nd7 39.Nc3 Ke8 40.Kg3 Nd3 41.
Na4 Nc1 42.Ncxb6 Nxb6 43.Nxb6 Ke7 44.Kf4 Nxa2 45.Na4 Kd6 46.Kg5 Nc1 47.Kh6
Nxb3 48.Kxh7 Nd2 49.Kxg6 Nxc4 50.h5 Ne5+ 51.Kf5 Nf7 52.Kg6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Portisch, Lajos"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "E62"]
[EventDate "1964.05.20"]
[PlyCount "77"]

1.Nf3 Nf6 2.g3 d6 3.d4 g6 4.Bg2 Bg7 5.O-O O-O 6.c4 Bg4 7.Nc3 Qc8 8.Re1 Re8
9.Qb3 Nc6 10.d5 Na5 11.Qa4 b6 12.Nd2 Bd7 13.Qc2 c6 14.b4 Nxc4 15.Nxc4 cxd5
16.Na3 d4 17.Bxa8 Qxa8 18.Ncb5 Rc8 19.Qd1 Ne4 20.f3 a6 21.Nxd4 Qd5 22.Be3 
Rc3 23.Ndc2 Qf5 24.g4 Qe6 25.Bd4 h5 26.Bxg7 hxg4 27.Nd4 Qd5 28.fxe4 Qxe4 
29.Nf3 Qe3+ 30.Kh1 Bc6 31.Rf1 Rxa3 32.Qc1 gxf3 33.Qxc6 Qxe2 34.Rg1 Kxg7 
35.Rae1 Qd2 36.Rd1 Qe2 37.Rde1 Qd2 38.Rd1 Qe2 39.Rde1 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Smyslov, Vassily"]
[Black "Darga, Klaus"]
[Result "1-0"]
[ECO "A11"]
[EventDate "1964.05.20"]
[PlyCount "49"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 Bg4 4.c4 c6 5.cxd5 cxd5 6.Ne5 Bc8 7.O-O e6 8.Nc3 
Be7 9.d4 O-O 10.Bf4 Bd7 11.Qb3 Qb6 12.Qxb6 axb6 13.Nxd7 Nbxd7 14.Rfc1 Rfc8
15.a3 Rc6 16.Bd2 Rd8 17.e3 Ne8 18.e4 dxe4 19.Bxe4 Rc4 20.Nb5 Rxc1+ 21.Rxc1
Nc5 22.dxc5 Rxd2 23.cxb6 Rxb2 24.a4 Kf8 25.Rc8 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Spassky, Boris"]
[Black "Tringov, Georgi"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "91"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.Nbd2 cxd4 13.cxd4 Nc6 14.d5 Nb4 15.Bb1 a5 
16.a3 Na6 17.b4 axb4 18.axb4 Nb6 19.Qb3 Bd7 20.Bd3 Qb8 21.Nf1 Nc4 22.Rb1 
Rc8 23.Ng3 g6 24.Qd1 Nb6 25.Ng5 Rc7 26.f4 Qd8 27.Nf3 f6 28.Kh2 Na4 29.Qd2 
Rac8 30.Rf1 Bf8 31.f5 g5 32.Ra1 Nb8 33.Qe2 Be8 34.Be3 Qd7 35.Bxg5 fxg5 36.
Nxg5 Bh6 37.Ne6 Rc3 38.Qg4+ Kh8 39.Qh4 Rxd3 40.Qxh6 Qf7 41.f6 Rxg3 42.Kxg3
Qg6+ 43.Qxg6 Bxg6 44.f7 Nd7 45.Rac1 Rf8 46.Rc6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.21"]
[Round "2"]
[White "Stein, Leonid"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "B15"]
[EventDate "1964.05.20"]
[PlyCount "142"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4 Be7 7.Ne2 O-O 8.
O-O Nd7 9.Re1 c5 10.c3 cxd4 11.cxd4 Bb4 12.Nc3 Nb6 13.Bb3 Bf5 14.d5 Rc8 
15.Qd4 Bc5 16.Qf4 Qd7 17.Be3 Bd6 18.Qh4 Be5 19.Rad1 Rcd8 20.Bc5 Bd6 21.
Bxd6 Qxd6 22.Nb5 Qc5 23.Nd4 Bg6 24.Ne6 fxe6 25.dxe6 Rxd1 26.e7+ Rd5 27.
exf8=Q+ Kxf8 28.Bxd5 Nxd5 29.Qg3 Nc7 30.Qf3 b6 31.Qf4 Be8 32.h3 a5 33.Rc1 
Ne6 34.Qd2 Qd4 35.Qc2 Qc5 36.Qb1 Qg5 37.Rc8 Ke7 38.Qe4 Bd7 39.Rc3 h6 40.
Re3 Qc5 41.Re1 Kf7 42.h4 h5 43.Qb7 Qc6 44.Qb8 Nf8 45.Rd1 Be6 46.b3 Nd7 47.
Qd8 Ne5 48.Qd4 Nd7 49.Re1 Qd5 50.Qc3 Nc5 51.Qe3 Kg6 52.Rc1 Qd6 53.Re1 Kf7 
54.Qe2 Qd5 55.Rd1 Qf5 56.Qb5 Nd7 57.Qc6 Kg6 58.Qd6 Kf7 59.Qc6 Qg4 60.Re1 
Ne5 61.Qc7+ Kg6 62.Rxe5 fxe5 63.Qxb6 Qd1+ 64.Kh2 Qd5 65.a3 Kf7 66.b4 a4 
67.Qc7+ Bd7 68.Kg1 Ke6 69.Qd8 Bc6 70.Qg5 Qd1+ 71.Kh2 Qg4 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Bronstein, David"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "A47"]
[EventDate "1964.05.20"]
[PlyCount "61"]

1.Nf3 Nf6 2.d4 b6 3.Bg5 Bb7 4.e3 e6 5.Bd3 c5 6.c3 Be7 7.Nbd2 O-O 8.Qc2 h6 
9.Bxf6 Bxf6 10.O-O Nc6 11.Rad1 Rc8 12.Qb1 d5 13.Rfe1 Qc7 14.Nf1 e5 15.dxe5
Nxe5 16.Be2 Rcd8 17.Nxe5 Bxe5 18.Bf3 Rd6 19.Qc2 Rfd8 20.Qe2 Bc6 21.g3 b5 
22.Bg2 Bf6 23.Qc2 Re6 24.Nd2 a5 25.Nb3 Qb6 26.Nc1 d4 27.cxd4 Bxg2 28.Kxg2 
cxd4 29.e4 Rc6 30.Qe2 b4 31.Nd3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Darga, Klaus"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "D82"]
[EventDate "1964.05.20"]
[PlyCount "28"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c5 6.dxc5 Qa5 7.cxd5 Nxd5 8.Qxd5 
Bxc3+ 9.bxc3 Qxc3+ 10.Ke2 Qxa1 11.Be5 Qc1 12.Bxh8 Be6 13.Qxb7 Qc2+ 14.Ke1 
Qc1+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Evans, Larry Melvyn"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "B19"]
[EventDate "1964.05.20"]
[PlyCount "43"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nf3 Nd7 7.h4 h6 8.h5 Bh7
9.Bd3 Bxd3 10.Qxd3 Qc7 11.Bd2 Ngf6 12.O-O-O e6 13.Kb1 c5 14.c4 cxd4 15.
Nxd4 a6 16.Nxe6 fxe6 17.Qg6+ Kd8 18.Rhe1 Kc8 19.Rxe6 b6 20.Qf5 Kb7 21.Bf4 
Qc5 22.Rxf6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Ivkov, Borislav"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "B88"]
[EventDate "1964.05.20"]
[PlyCount "101"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bc4 e6 7.Bb3 Be7 8.Be3 
O-O 9.f4 e5 10.Nf3 Ng4 11.Bd2 exf4 12.Bxf4 Bh4+ 13.Nxh4 Qxh4+ 14.Bg3 Qh6 
15.Nd5 Be6 16.O-O Bxd5 17.Bf4 Qg6 18.Bxd5 Nge5 19.Qd2 Ne7 20.Bb3 Rad8 21.
Rad1 N7c6 22.Bd5 Kh8 23.Qc3 h6 24.Qa3 f6 25.Qg3 Qxg3 26.Bxg3 Nb4 27.Bb3 
Rfe8 28.h3 Rc8 29.c3 Na6 30.Rxd6 Nc5 31.Bd5 b6 32.b4 Na4 33.Bxe5 Rxe5 34.
c4 Nc3 35.Rd7 Nxd5 36.cxd5 Rxe4 37.Rf2 Rc1+ 38.Kh2 h5 39.g3 h4 40.gxh4 
Ree1 41.Rg2 Rh1+ 42.Kg3 Rc3+ 43.Kg4 Rhxh3 44.Kf5 Rhf3+ 45.Ke6 Rce3+ 46.Kf7
Rg3 47.Rxg3 Rxg3 48.Rxa7 f5 49.d6 Rd3 50.d7 Kh7 51.Ke6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Larsen, Bent"]
[Black "Gligoric, Svetozar"]
[Result "1/2-1/2"]
[ECO "C28"]
[EventDate "1964.05.20"]
[PlyCount "67"]

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6 4.d3 Bb4 5.Nf3 d6 6.O-O Bxc3 7.bxc3 Na5 8.Bb3 
Nxb3 9.axb3 O-O 10.c4 b6 11.Qe2 Nd7 12.Bg5 f6 13.Be3 Re8 14.Nd2 Nf8 15.f4 
exf4 16.Bxf4 Ng6 17.Bg3 Ne5 18.h3 Bd7 19.d4 Ng6 20.h4 Nh8 21.b4 Nf7 22.Qd3
c5 23.bxc5 bxc5 24.dxc5 dxc5 25.Nb3 Qe7 26.Ra5 Rec8 27.Qe3 Be6 28.Nxc5 
Bxc4 29.Rb1 Bd5 30.Re1 Bc6 31.Nd3 Re8 32.e5 fxe5 33.Nxe5 Qb7 34.Qb3 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Lengyel, Levente"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[ECO "D27"]
[EventDate "1964.05.20"]
[PlyCount "38"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4 cxd4 8.exd4 
Nc6 9.Nc3 Be7 10.Be3 O-O 11.Ne5 Qc7 12.Nxc6 bxc6 13.Rc1 Bb7 14.Be2 Rfd8 
15.Qc2 Rac8 16.Qb3 Rb8 17.Qc2 Rbc8 18.Qb3 Rb8 19.Qc2 Rbc8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Quinones Carillo, Oscar"]
[Black "Foguelman, Alberto"]
[Result "1-0"]
[ECO "B18"]
[EventDate "1964.05.20"]
[PlyCount "99"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nf3 Nd7 7.Bd3 Qc7 8.O-O 
Ngf6 9.c4 e6 10.Re1 Bb4 11.Re2 O-O-O 12.a3 Bd6 13.b4 Bf4 14.a4 Bxc1 15.
Rxc1 Nh5 16.Rd2 Bxd3 17.Rxd3 Nf4 18.Rd2 Nf6 19.Ne5 h5 20.Qf3 Ng6 21.Nxg6 
fxg6 22.Qe3 Rhe8 23.Rdd1 Qd6 24.b5 c5 25.Ne4 Nxe4 26.Qxe4 g5 27.a5 Re7 28.
a6 cxd4 29.axb7+ Rxb7 30.Ra1 d3 31.Ra6 Qd4 32.Qxe6+ Kb8 33.Ra2 Rb6 34.Qe7 
Rf6 35.c5 Qd7 36.Qe5+ Kc8 37.b6 axb6 38.Rda1 d2 39.Ra8+ Kb7 40.Qe4+ Qd5 
41.R1a7+ Kc6 42.Qa4+ b5 43.Rc7+ Kxc7 44.Qa5+ Kd7 45.Rxd8+ Ke6 46.Rxd5 Kxd5
47.Qxd2+ Kxc5 48.Qxg5+ Kb6 49.Qxg7 Rd6 50.f4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Reshevsky, Samuel Herman"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[ECO "A37"]
[EventDate "1964.05.20"]
[PlyCount "59"]

1.Nf3 c5 2.g3 g6 3.Bg2 Bg7 4.O-O Nc6 5.c4 e6 6.Nc3 Nge7 7.a3 O-O 8.Rb1 d5 
9.cxd5 exd5 10.d3 b6 11.Bd2 Bb7 12.Qc1 Qd7 13.Bh6 d4 14.Bxg7 Kxg7 15.Na2 
Qe6 16.Qc4 Qxc4 17.dxc4 a5 18.b3 Nf5 19.Nc1 Rfe8 20.Nd2 Nd6 21.Re1 Ne5 22.
Bxb7 Nxb7 23.Nd3 Nd6 24.Kf1 Ra7 25.a4 Ng4 26.h3 Nf6 27.g4 Nfe4 28.Nxe4 
Nxe4 29.Rb2 Rae7 30.e3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Rossetto, Hector Decio"]
[Black "Porath, Yosef"]
[Result "0-1"]
[ECO "A36"]
[EventDate "1964.05.20"]
[PlyCount "74"]

1.c4 Nf6 2.Nc3 c5 3.g3 g6 4.Bg2 Bg7 5.e3 Nc6 6.Nge2 d6 7.d4 cxd4 8.exd4 
Bf5 9.O-O Qd7 10.Bf4 Bh3 11.d5 Ne5 12.Bxe5 dxe5 13.Nc1 O-O 14.Nd3 Bxg2 15.
Kxg2 e4 16.Nf4 Rac8 17.Qe2 g5 18.Nh3 Qf5 19.f3 g4 20.fxg4 Qxg4 21.Qe3 Rxc4
22.Qxa7 Qd7 23.Nf4 Ng4 24.Nfe2 Bh6 25.Qb6 Ne3+ 26.Kh1 Qh3 27.Rf2 Ng4 28.
Rg2 Ne3 29.Rf2 Ng4 30.Rg2 Be3 31.Qxb7 Nf2+ 32.Rxf2 Bxf2 33.Qxe7 Qf5 34.Nf4
Bc5 35.Qh4 e3 36.Re1 Rb8 37.Re2 Rxc3 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Tal, Mikhail"]
[Black "Stein, Leonid"]
[Result "1/2-1/2"]
[ECO "B14"]
[EventDate "1964.05.20"]
[PlyCount "62"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.e3 c5 5.d4 Nc6 6.a3 cxd4 7.exd4 Be7 8.c5 Ne4 
9.Qc2 f5 10.Bb5 Bf6 11.Bf4 O-O 12.Bxc6 bxc6 13.O-O Bd7 14.Be5 Be8 15.Bxf6 
gxf6 16.Ne1 e5 17.f4 Qe7 18.Nd3 Nxc3 19.Qxc3 exd4 20.Qxd4 Qe4 21.Qc3 Qc4 
22.Rac1 Qxc3 23.Rxc3 Bd7 24.Rb3 Rab8 25.Rxb8 Rxb8 26.Kf2 Kf7 27.Ke3 Rg8 
28.Rf2 Re8+ 29.Kd2 a5 30.Re2 Rb8 31.Kc3 Bc8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Tringov, Georgi"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[ECO "C86"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 O-O 8.a4 b4 
9.a5 d6 10.c3 Rb8 11.Bc4 d5 12.exd5 Nxd5 13.d3 Bf6 14.Qe4 Nde7 15.Bg5 Bf5 
16.Qe3 Bxg5 17.Qxg5 Qd6 18.Bxa6 Ra8 19.Bb5 Nxa5 20.Qg3 c6 21.Bc4 Nxc4 22.
Rxa8 Rxa8 23.dxc4 Ng6 24.cxb4 Qxb4 25.Nc3 f6 26.h4 Qxc4 27.h5 Nf4 28.h6 g5
29.Re1 Ng6 30.Rd1 Qf4 31.Qxf4 Nxf4 32.Rd6 Kf7 33.Rxc6 Rb8 34.Nd2 Rxb2 35.
Nde4 Be6 36.g3 Nh3+ 37.Kg2 g4 38.Rc7+ Kg6 39.Rc6 Kf7 40.Rc7+ Kg6 41.Rc6 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.22"]
[Round "3"]
[White "Vranesic, Zvonko"]
[Black "Benko, Pal"]
[Result "1/2-1/2"]
[ECO "D84"]
[EventDate "1964.05.20"]
[PlyCount "91"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.
Bxc7 Nc6 9.Ne2 e5 10.dxe5 Qb5 11.Qd2 Nxe5 12.Nf4 Qa4 13.b3 Qe4 14.f3 Qf5 
15.Rd1 Re8 16.Be2 Nc6 17.O-O Qc5 18.Nd5 Be6 19.Bc4 Bxd5 20.Qxd5 Qxe3+ 21.
Kh1 Qe7 22.Bd6 Qf6 23.f4 Rad8 24.Qc5 a6 25.a4 Bf8 26.Bxf8 Rxf8 27.Qb6 Rxd1
28.Rxd1 Rd8 29.Rxd8+ Qxd8 30.Qxd8+ Nxd8 31.Kg1 Kf8 32.Kf2 Ke7 33.Ke3 Kd6 
34.g4 h6 35.Ke4 f6 36.h4 Nc6 37.Bf7 Ne7 38.g5 hxg5 39.hxg5 fxg5 40.fxg5 b5
41.Be8 bxa4 42.Bxa4 a5 43.Be8 Ke6 44.Bb5 Kd6 45.Bc4 Nc6 46.Bd3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Benko, Pal"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "D35"]
[EventDate "1964.05.20"]
[PlyCount "70"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.cxd5 exd5 6.Bf4 c6 7.Qc2 g6 8.e3 Bf5
9.Bd3 Bxd3 10.Qxd3 O-O 11.O-O Nbd7 12.Rab1 a5 13.Qc2 Re8 14.a3 Nb6 15.Nd2 
Nh5 16.Be5 Nd7 17.Nf3 Nb6 18.Nd2 Nd7 19.Rfd1 Bf8 20.Bg3 Nxg3 21.hxg3 Nf6 
22.b4 axb4 23.axb4 b5 24.Ne2 Ra6 25.Nf4 Bd6 26.Nd3 Qe7 27.Ra1 Rea8 28.Rxa6
Rxa6 29.Nb3 Bxb4 30.Ra1 Rxa1+ 31.Nxa1 Qa7 32.Nb3 Qa4 33.Ne5 Bd6 34.Qxc6 
Qxb3 35.Qxd6 Qd1+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Berger, Bela"]
[Black "Vranesic, Zvonko"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1964.05.20"]
[PlyCount "82"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.g3 b5 7.Bg2 Bb7 8.O-O Nc6
9.Nxc6 dxc6 10.e5 Ne7 11.Ne4 Nd5 12.f4 O-O-O 13.Qe2 Qb6+ 14.Kh1 h5 15.h4 
Rd7 16.a4 f6 17.a5 Qc7 18.c4 bxc4 19.Bh3 f5 20.Ng5 c5 21.Kh2 Qc6 22.Qxc4 
Be7 23.Bd2 Rhd8 24.Rf2 Nb6 25.Qc2 Nc4 26.Bg2 Qxg2+ 27.Rxg2 Rxd2 28.Rxd2 
Rxd2+ 29.Qxd2 Nxd2 30.Nxe6 g6 31.Rd1 Nb3 32.g4 hxg4 33.h5 gxh5 34.Ng7 Be4 
35.Nxh5 c4 36.Nf6 Bd3 37.Nd5 Kd7 38.Kg3 Bd8 39.Rh1 Bxa5 40.Rh6 Be1+ 41.Kh2
g3+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Bilek, Istvan"]
[Black "Evans, Larry Melvyn"]
[Result "0-1"]
[ECO "A72"]
[EventDate "1964.05.20"]
[PlyCount "74"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 
9.Bg5 h6 10.Bh4 g5 11.Bg3 Nh5 12.Nd2 Nxg3 13.hxg3 f5 14.exf5 Bxf5 15.Nc4 
a6 16.a4 Qe7 17.Nb6 Ra7 18.O-O Nd7 19.Nxd7 Qxd7 20.a5 Raa8 21.Na4 Rae8 22.
Nb6 Qc7 23.Nc4 Bd4 24.Bd3 Bxd3 25.Qxd3 Rf6 26.Ne3 Qh7 27.Ra3 Bxb2 28.Qxh7+
Kxh7 29.Rb3 Bd4 30.Rxb7+ Kg6 31.Nc2 Re5 32.Rb6 Rxd5 33.Rxa6 Bxf2+ 34.Kh1 
Bxg3 35.Rb1 Rd2 36.Ne3 Rf4 37.Rb3 Rd1+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Foguelman, Alberto"]
[Black "Darga, Klaus"]
[Result "1/2-1/2"]
[ECO "A60"]
[EventDate "1964.05.20"]
[PlyCount "75"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.dxe6 fxe6 5.Bg5 Be7 6.Nc3 d5 7.e3 d4 8.exd4 
cxd4 9.Bxf6 Bxf6 10.Ne4 O-O 11.Bd3 Nc6 12.Ne2 Be5 13.O-O Qh4 14.f4 Bc7 15.
g3 Qe7 16.Qd2 e5 17.fxe5 Nxe5 18.Nf4 Nxd3 19.Nd5 Rxf1+ 20.Rxf1 Qxe4 21.
Qxd3 Bf5 22.Qxe4 Bxe4 23.Nxc7 Rc8 24.Nb5 Bd3 25.Re1 Rd8 26.b3 Bg6 27.Rd1 
d3 28.Rd2 a6 29.Nc3 Kf7 30.Kf2 Ke6 31.Ke3 Kd6 32.Ne4+ Kc6 33.Nf2 Re8+ 34.
Kd4 b5 35.Nxd3 Re4+ 36.Kc3 Re3 37.Kd4 Re4+ 38.Kc3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Gligoric, Svetozar"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "C92"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Be6 10.d4 Bxb3 11.Qxb3 Qd7 12.Nbd2 Rfe8 13.Nf1 h6 14.a4 Na5 15.Qc2 
Bf8 16.axb5 axb5 17.Ne3 c5 18.dxe5 dxe5 19.Rd1 Qc7 20.Nd5 Nxd5 21.Rxd5 g6 
22.b3 Bg7 23.Be3 Nb7 24.Rad1 Rad8 25.c4 Rxd5 26.Rxd5 bxc4 27.bxc4 Re7 28.
Nd2 Qb6 29.Qa4 Rc7 30.Qb5 Qxb5 31.cxb5 c4 32.b6 Rc6 33.Rd7 c3 34.Rxb7 cxd2
35.Bxd2 Bf8 36.Rb8 Kg7 37.Bxh6+ Kxh6 38.Rxf8 Rxb6 39.Rxf7 Rb1+ 40.Kh2 Re1 
41.f3 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Lengyel, Levente"]
[Black "Reshevsky, Samuel Herman"]
[Result "1/2-1/2"]
[ECO "D79"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.d4 O-O 5.O-O d5 6.c4 c6 7.cxd5 cxd5 8.Ne5 
Nc6 9.Nc3 e6 10.Nxc6 bxc6 11.Bf4 Nh5 12.Be3 Nf6 13.Na4 Ng4 14.Bd2 f5 15.
Rc1 Qe8 16.Bb4 Rf7 17.Bd6 h5 18.Qd3 Bh6 19.Bf4 Bg7 20.b3 Bd7 21.Nc5 Bc8 
22.Qc3 e5 23.dxe5 Bxe5 24.Bxe5 Nxe5 25.Nd3 Nxd3 26.exd3 Bd7 27.Rfe1 Qf8 
28.f4 a5 29.Qc5 Qxc5+ 30.Rxc5 Kf8 31.Kf2 Re7 32.Re3 Rxe3 33.Kxe3 Ke7 34.h4
Kd6 35.d4 Be6 36.Kd2 Bd7 37.Bf1 Kc7 38.Bd3 Kb6 39.Rc1 Re8 40.Rc3 Re7 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Pachman, Ludek"]
[Black "Tringov, Georgi"]
[Result "1-0"]
[ECO "E82"]
[EventDate "1964.05.20"]
[PlyCount "78"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 b6 7.Bd3 Bb7 8.Nge2 c5 
9.d5 e6 10.O-O exd5 11.cxd5 Ba6 12.Nb5 Bxb5 13.Bxb5 a6 14.Bd3 Re8 15.Qd2 
Nbd7 16.Rab1 Ne5 17.b4 Nxd3 18.Qxd3 Nd7 19.bxc5 Ne5 20.Qc2 bxc5 21.Rb7 Rb8
22.Rfb1 Rxb7 23.Rxb7 c4 24.Qa4 Qc8 25.Rb1 Re7 26.Nd4 Rc7 27.Rb6 c3 28.Nc6 
Nxc6 29.dxc6 h5 30.Qxa6 Qe6 31.Rb7 c2 32.Qa4 Rc8 33.Qxc2 d5 34.c7 Be5 35.
exd5 Qxd5 36.Rb8 Qd7 37.Rxc8+ Qxc8 38.Bb6 Kg7 39.Qc5 Bf4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Perez Perez, Francisco Jose"]
[Black "Rossetto, Hector Decio"]
[Result "0-1"]
[ECO "D80"]
[EventDate "1964.05.20"]
[PlyCount "118"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bf4 Nxc3 6.bxc3 Bg7 7.e3 O-O 8.Qb3 
dxc4 9.Bxc4 Nc6 10.Nf3 Na5 11.Qb4 Nxc4 12.Qxc4 c6 13.O-O Qa5 14.Be5 Be6 
15.Qb4 Qxb4 16.cxb4 f6 17.Bg3 Kf7 18.Nd2 h5 19.Rfc1 Bd5 20.Kf1 g5 21.h4 
Bh6 22.hxg5 Bxg5 23.f4 Bh6 24.e4 Be6 25.Nf3 Rg8 26.Kf2 Rg4 27.Nh2 Bxf4 28.
Nxg4 Bxc1 29.Rxc1 hxg4 30.a3 Rh8 31.Ke3 Rh5 32.Kd2 f5 33.Ke3 fxe4 34.Kxe4 
Rf5 35.Bc7 Kg6 36.Ke3 Bd5 37.Rg1 Kf7 38.Bb8 a6 39.Bc7 Ke6 40.Bf4 Kd7 41.
Bg3 Rf8 42.Bh4 Kc7 43.Kd3 Kb6 44.Ke3 e6 45.a4 a5 46.Be1 axb4 47.Bxb4 Rf5 
48.Bc3 Ka6 49.Bb4 e5 50.dxe5 Rxe5+ 51.Kd3 Re4 52.Rb1 b6 53.a5 c5 54.Ba3 
Kxa5 55.Bc1 Rd4+ 56.Kc3 Bxg2 57.Be3 Ra4 58.Bf2 Bd5 59.Kd2 Ra2+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Porath, Yosef"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "B39"]
[EventDate "1964.05.20"]
[PlyCount "98"]

1.d4 Nf6 2.c4 c5 3.Nf3 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.e4 Nc6 7.Be3 Ng4 8.Qxg4 
Nxd4 9.Qd1 Ne6 10.Qd2 O-O 11.Be2 d6 12.O-O Bd7 13.Rad1 Bc6 14.Nd5 Nc5 15.
f3 a5 16.Bd4 Bxd4+ 17.Qxd4 e5 18.Qd2 Ne6 19.Ne3 Qb6 20.Kh1 Rad8 21.Bd3 f6 
22.Bb1 Rd7 23.Qc3 Qc5 24.Rd2 Kg7 25.Rfd1 Rc8 26.Nc2 Rdd8 27.Qa3 Kf7 28.h4 
b6 29.Kh2 Ke7 30.Qe3 Qxe3 31.Nxe3 Nd4 32.Nc2 Nxc2 33.Bxc2 Be8 34.Bd3 Bf7 
35.b3 Kd7 36.c5 Rxc5 37.Bc4 d5 38.Bxd5 Bxd5 39.exd5 Kd6 40.Kg3 Rdc8 41.h5 
Rc1 42.Rxc1 Rxc1 43.hxg6 hxg6 44.f4 Rc3+ 45.Kg4 f5+ 46.Kg5 Rg3+ 47.Kf6 e4 
48.a4 e3 49.Rd3 e2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Portisch, Lajos"]
[Black "Stein, Leonid"]
[Result "1-0"]
[ECO "E92"]
[EventDate "1964.05.20"]
[PlyCount "75"]

1.d4 Nf6 2.c4 c5 3.d5 d6 4.Nc3 g6 5.e4 Bg7 6.Nf3 O-O 7.Be2 e5 8.Bg5 h6 9.
Bd2 Nh5 10.Qc1 Kh7 11.h4 Nf4 12.Bxf4 exf4 13.Qxf4 f5 14.Qd2 fxe4 15.Nxe4 
Qe7 16.Bd3 Bg4 17.O-O-O Bxf3 18.gxf3 Nd7 19.f4 Qf7 20.h5 Qxf4 21.hxg6+ Kg8
22.Qxf4 Rxf4 23.Nxd6 Ne5 24.b3 Rxf2 25.Bc2 b6 26.Nf5 b5 27.Rde1 Re8 28.d6 
Bf6 29.cxb5 h5 30.Rhg1 Rxf5 31.Bxf5 Kg7 32.d7 Rd8 33.Re4 h4 34.Rd1 Nf3 35.
Re8 Bg5+ 36.Kb1 Nd4 37.Bh3 Kxg6 38.Rg1 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Smyslov, Vassily"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "A05"]
[EventDate "1964.05.20"]
[PlyCount "62"]

1.Nf3 Nf6 2.g3 g6 3.b4 Bg7 4.Bb2 c6 5.Bg2 a5 6.a3 axb4 7.axb4 Rxa1 8.Bxa1 
Qb6 9.c3 O-O 10.O-O d5 11.d3 Bg4 12.Nbd2 Nbd7 13.Qa4 Qc7 14.c4 dxc4 15.
dxc4 c5 16.b5 Nb6 17.Qb3 Ra8 18.h3 Bf5 19.Be5 Qc8 20.g4 Bd7 21.Qc3 Be6 22.
Rc1 Ra4 23.Qd3 h6 24.Nh2 Nbd7 25.Bf4 Nb6 26.Nhf1 h5 27.g5 Nfd7 28.Ne3 Nf8 
29.Kh2 Kh7 30.Qe4 Ra2 31.Rd1 Na4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.24"]
[Round "4"]
[White "Spassky, Boris"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "69"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.Nbd2 cxd4 13.cxd4 Nc6 14.Nf1 Nxd4 15.Nxd4 
exd4 16.Qxd4 Ne5 17.Qd1 Bf6 18.Ne3 Nc4 19.Rb1 Be6 20.b3 Nxe3 21.Bxe3 Qa5 
22.Re2 Rac8 23.Bd3 Qb4 24.Rc1 Rxc1 25.Qxc1 Rc8 26.Rc2 Rxc2 27.Qxc2 Bd4 28.
Bd2 Qc5 29.Qxc5 dxc5 30.Kf1 c4 31.Bc2 Kf8 32.Ke2 Ke7 33.Be3 Bc3 34.Bc5+ 
Kd7 35.Ke3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Bronstein, David"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "C91"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.d4 Bg4 10.d5 Na5 11.Bc2 c6 12.dxc6 Qc7 13.h3 Be6 14.Bg5 Nc4 15.Qc1 h6 
16.Bh4 Nh5 17.Bxe7 Qxe7 18.b3 Na5 19.Qe3 Nxc6 20.Nbd2 Rfc8 21.Rac1 Nf4 22.
h4 Bg4 23.g3 Bxf3 24.Nxf3 Ne6 25.Bd3 Nc5 26.Bf1 Rab8 27.h5 Rd8 28.Rcd1 Qc7
29.Bh3 b4 30.Qd2 Qa5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Darga, Klaus"]
[Black "Gligoric, Svetozar"]
[Result "1/2-1/2"]
[ECO "D13"]
[EventDate "1964.05.20"]
[PlyCount "56"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 e6 7.e3 Bd6 8.Bxd6 
Qxd6 9.Bb5 Bd7 10.O-O O-O 11.Bxc6 Bxc6 12.Ne5 Rac8 13.Qb3 Nd7 14.Nxd7 Qxd7
15.Rfc1 Rc7 16.Qd1 Rfc8 17.h3 Bb5 18.Nxb5 Qxb5 19.Rxc7 Rxc7 20.Rc1 Rxc1 
21.Qxc1 g6 22.Qc2 Kg7 23.g3 h5 24.h4 Kg8 25.Kg2 Kg7 26.Kg1 Kg8 27.Kg2 Kg7 
28.Kg1 Kg8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Evans, Larry Melvyn"]
[Black "Lengyel, Levente"]
[Result "1/2-1/2"]
[ECO "E42"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 cxd4 6.exd4 d5 7.a3 Bxc3+ 8.Nxc3 
dxc4 9.Bxc4 Nc6 10.Be3 O-O 11.O-O b6 12.Rc1 Bb7 13.Ba2 Rc8 14.d5 Nxd5 15.
Nxd5 exd5 16.Bxd5 Qe7 17.Qh5 Na5 18.b4 Bxd5 19.Qxd5 Qb7 20.Qxb7 Nxb7 21.
Rfd1 Rxc1 22.Rxc1 Nd6 23.Rc6 Rd8 24.Kf1 Kf8 25.a4 Ke7 26.Ke2 Kd7 27.b5 Re8
28.Kd3 Nb7 29.Rc4 Re6 30.Rh4 Rg6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Ivkov, Borislav"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "B17"]
[EventDate "1964.05.20"]
[PlyCount "57"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Ng3 e6 7.Bd3 c5 8.O-O 
cxd4 9.Nxd4 Be7 10.b3 O-O 11.c4 Qc7 12.Bb2 Rd8 13.Qe2 Nf8 14.Ne4 Bd7 15.
Rac1 Ng6 16.g3 e5 17.Nb5 Qb8 18.Rfd1 Nxe4 19.Bxe4 f5 20.Rxd7 fxe4 21.Rxd8+
Qxd8 22.Rd1 Qb6 23.Nc3 Bc5 24.Nxe4 Bd4 25.c5 Qe6 26.Ng5 Qd5 27.Bxd4 exd4 
28.Qe6+ Qxe6 29.Nxe6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Larsen, Bent"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "B23"]
[EventDate "1964.05.20"]
[PlyCount "57"]

1.e4 c5 2.f4 e6 3.Nf3 Nc6 4.Bb5 g6 5.Bxc6 dxc6 6.d3 Bg7 7.O-O Ne7 8.Nc3 
O-O 9.Qe1 b6 10.a4 Ba6 11.Qh4 Qd7 12.Be3 c4 13.dxc4 c5 14.Ne5 Qb7 15.Rf3 
f6 16.Rh3 fxe5 17.Qxh7+ Kf7 18.f5 exf5 19.Bh6 Rg8 20.exf5 Nxf5 21.Rf1 Bxc4
22.Rg3 Bxf1 23.Qxg6+ Ke7 24.Bg5+ Kf8 25.Qxf5+ Qf7 26.Qe4 Rc8 27.Rf3 Bc4 
28.Qxc4 Qxf3 29.gxf3 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Quinones Carillo, Oscar"]
[Black "Porath, Yosef"]
[Result "1/2-1/2"]
[ECO "E14"]
[EventDate "1964.05.20"]
[PlyCount "67"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 c5 6.O-O Be7 7.Nc3 cxd4 8.exd4 
O-O 9.b3 d5 10.Bb2 Nc6 11.Qe2 Nb4 12.Bb1 dxc4 13.bxc4 Ba6 14.Rd1 Rc8 15.
Ne5 Qc7 16.a3 Nbd5 17.Nb5 Bxb5 18.cxb5 Nc3 19.Bxc3 Qxc3 20.Nc6 Bxa3 21.Ra2
Bd6 22.Rc2 Qa3 23.Qc4 Bb8 24.Ne7+ Qxe7 25.Qxc8 Rxc8 26.Rxc8+ Ne8 27.Rxb8 
g6 28.Be4 Kg7 29.Rb7 Qb4 30.Bc6 Nd6 31.Rxa7 Nxb5 32.Bxb5 Qxb5 33.g3 Qd5 
34.Rb1 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Reshevsky, Samuel Herman"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[ECO "E60"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.Nf3 Nf6 2.c4 c5 3.g3 Nc6 4.Bg2 g6 5.O-O Bg7 6.d4 cxd4 7.Nxd4 Nxd4 8.Qxd4
O-O 9.c5 d6 10.cxd6 Ne8 11.Qh4 Nxd6 12.Nc3 Nf5 13.Qe4 Nd6 14.Qf4 Be6 15.
Rd1 Qb6 16.Rb1 Rac8 17.Be3 Qa5 18.Nd5 Bxd5 19.Bxd5 Nf5 20.Bxb7 Rb8 21.Bd5 
Bxb2 22.Bb3 Nxe3 23.Qxe3 Bf6 24.Qd2 Qxd2 25.Rxd2 Rfd8 26.Rbd1 e6 27.Rd7 a5
28.Kg2 Rxd7 29.Rxd7 Rd8 30.Rxd8+ Bxd8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Rossetto, Hector Decio"]
[Black "Benko, Pal"]
[Result "1/2-1/2"]
[ECO "D93"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c6 6.Nf3 O-O 7.Be2 c5 8.dxc5 Qa5 
9.O-O dxc4 10.Bxc4 Qxc5 11.Qd4 Qa5 12.b4 Qb6 13.Rac1 Nc6 14.Qxb6 axb6 15.
b5 Na5 16.Be2 Be6 17.Bc7 Rfc8 18.Na4 Nd5 19.Nxb6 Nxb6 20.Bxb6 Nc4 21.Bd4 
Rxa2 22.Bxg7 Kxg7 23.Nd4 Nd6 24.Nxe6+ fxe6 25.Rxc8 Nxc8 26.Bc4 Rb2 27.Bxe6
Nd6 28.g4 Nxb5 29.g5 Nc3 30.Ra1 h6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Stein, Leonid"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "C93"]
[EventDate "1964.05.20"]
[PlyCount "66"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 h6 10.d4 Re8 11.Nbd2 Bf8 12.Nf1 Bb7 13.Ng3 Na5 14.Bc2 Nc4 15.a4 d5 
16.exd5 exd4 17.Rxe8 Qxe8 18.Qxd4 Bxd5 19.Nh5 Nxh5 20.Qxd5 Nf6 21.Qd1 Rd8 
22.Qe1 Qxe1+ 23.Nxe1 Nd5 24.axb5 axb5 25.Bd3 Nd6 26.Kf1 Be7 27.Be2 Bf6 28.
Ra5 c6 29.Ra6 b4 30.c4 Ne7 31.b3 Ne4 32.Nd3 Bc3 33.Bf3 Ng5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Tal, Mikhail"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "73"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 Na5 10.Bc2 c5 11.d4 Nc6 12.Nbd2 Qb6 13.dxc5 dxc5 14.Nf1 Be6 15.Ne3 
Rad8 16.Qe2 c4 17.Nf5 Bxf5 18.exf5 Rfe8 19.Ng5 Bc5 20.Ne4 Nxe4 21.Bxe4 Ne7
22.Qf3 Rd6 23.b4 cxb3 24.axb3 b4 25.cxb4 Qxb4 26.Ba3 Qb6 27.Bxc5 Qxc5 28.
Rec1 Qb6 29.Ra4 Rd4 30.Qc3 g6 31.fxg6 hxg6 32.Qc7 Qxc7 33.Rxc7 Kf8 34.Rxd4
exd4 35.Bd3 a5 36.Bc4 Rd8 37.Kf1 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Tringov, Georgi"]
[Black "Foguelman, Alberto"]
[Result "1/2-1/2"]
[ECO "B11"]
[EventDate "1964.05.20"]
[PlyCount "105"]

1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bxf3 5.Qxf3 Nf6 6.d3 e6 7.Bd2 Qb6 8.O-O-O 
d4 9.Ne2 Na6 10.Kb1 c5 11.g4 Nb4 12.g5 Nd7 13.Qg3 O-O-O 14.h4 Be7 15.Bh3 
Qb5 16.f4 Qa4 17.Bxb4 Qxb4 18.f5 e5 19.c3 Qb6 20.cxd4 cxd4 21.f6 gxf6 22.
Rhf1 Rhg8 23.Qh2 Kb8 24.gxf6 Bxf6 25.Qf2 Rg6 26.h5 Rh6 27.Qf3 Nc5 28.Nc1 
Na4 29.Nb3 a5 30.Qe2 Be7 31.Ka1 Rc6 32.Rxf7 Bb4 33.Kb1 Bc3 34.Bd7 Rxd7 35.
Rxd7 Bxb2 36.Qf3 Ba3 37.Rg1 Qb4 38.Qg3 Qc3 39.Qxe5+ Rd6 40.Qe8+ Ka7 41.
Rxb7+ Kxb7 42.Qb5+ Nb6 43.Nxa5+ Kc7 44.Rg7+ Rd7 45.Rxd7+ Nxd7 46.Qb7+ Kd6 
47.Qd5+ Kc7 48.Qb7+ Kd6 49.Qd5+ Ke7 50.Nc6+ Kf8 51.Qf5+ Ke8 52.Qe6+ Kf8 
53.Qf5+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.25"]
[Round "5"]
[White "Vranesic, Zvonko"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[ECO "A56"]
[EventDate "1964.05.20"]
[PlyCount "71"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.g3 O-O 7.Bg2 Ne8 8.Nge2 Na6 
9.O-O Nac7 10.Be3 Rb8 11.a4 b6 12.f4 Bf6 13.Qc2 a6 14.Nc1 b5 15.fxe5 Bxe5 
16.Nd3 Bxc3 17.Qxc3 bxc4 18.Qxc4 a5 19.Rf2 Qe7 20.Re1 Ba6 21.Qc3 Bxd3 22.
Qxd3 Nf6 23.Bg5 Nce8 24.Qc2 h6 25.Bd2 Ng4 26.Rf4 Ne5 27.Bc3 c4 28.Ref1 Nd3
29.Rf5 Qa7+ 30.Kh1 f6 31.Qe2 Rf7 32.Bh3 Re7 33.R5f3 Nc7 34.Qg2 Ne5 35.R3f2
Nd3 36.Rf3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Benko, Pal"]
[Black "Larsen, Bent"]
[Result "1/2-1/2"]
[ECO "A40"]
[EventDate "1964.05.20"]
[PlyCount "64"]

1.g3 g6 2.Bg2 Bg7 3.d4 c5 4.c3 cxd4 5.cxd4 Nf6 6.e4 O-O 7.Nc3 d6 8.Nge2 
Qb6 9.O-O Nc6 10.d5 Ne5 11.h3 Bd7 12.b3 Rfc8 13.Be3 Qa5 14.Bd4 g5 15.Qd2 
h6 16.f4 gxf4 17.gxf4 Ng6 18.e5 Nh5 19.e6 fxe6 20.dxe6 Bb5 21.Bxg7 Nxg7 
22.Qd5 Qb6+ 23.Kh2 Rxc3 24.Nxc3 Bxf1 25.Rxf1 Rf8 26.Qd3 Nxf4 27.Rxf4 Rxf4 
28.Nd5 Qd4 29.Nxe7+ Kf8 30.Ng6+ Kg8 31.Ne7+ Kf8 32.Ng6+ Kg8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Berger, Bela"]
[Black "Rossetto, Hector Decio"]
[Result "1-0"]
[ECO "E91"]
[EventDate "1964.05.20"]
[PlyCount "85"]

1.e4 Nc6 2.Nf3 d6 3.d4 g6 4.d5 Nb8 5.c4 Bg7 6.Be2 Nf6 7.Nc3 O-O 8.O-O e5 
9.b4 Nbd7 10.Bg5 h6 11.Bh4 a5 12.a3 g5 13.Bg3 Nh5 14.Nd2 Nf4 15.Nb3 b6 16.
bxa5 bxa5 17.a4 Nf6 18.f3 h5 19.Nb5 g4 20.Kh1 Ne8 21.fxg4 Nxe2 22.Qxe2 
hxg4 23.Qd2 f5 24.exf5 Rxf5 25.Rxf5 Bxf5 26.Nxa5 Qf6 27.Nc6 Bd7 28.Kg1 Bh6
29.Qe2 Qg5 30.a5 Qe3+ 31.Qxe3 Bxe3+ 32.Bf2 Bxf2+ 33.Kxf2 Bxc6 34.dxc6 Kf7 
35.Kg3 Ke6 36.Nc3 Nf6 37.a6 d5 38.cxd5+ Nxd5 39.Nxd5 Kxd5 40.Kxg4 Kxc6 41.
h4 Kd5 42.h5 c5 43.h6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Bilek, Istvan"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "D02"]
[EventDate "1964.05.20"]
[PlyCount "66"]

1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.d4 Nd7 5.Nbd2 e6 6.h3 Bh5 7.c3 f5 8.Qb3 Rb8 
9.c4 Bd6 10.Qe3 Qe7 11.Ng5 Nf8 12.f4 Nf6 13.O-O h6 14.Ngf3 N8d7 15.Ne5 O-O
16.b3 Ne4 17.Nxe4 dxe4 18.Bb2 Nxe5 19.fxe5 Bc7 20.a4 Ba5 21.Kh2 Rbd8 22.
Rf2 c5 23.Rff1 cxd4 24.Bxd4 Rxd4 25.Qxd4 Bxe2 26.Rfc1 Bc7 27.Ra2 Bd3 28.
Qxa7 Bxe5 29.Qg1 Qg5 30.Rd1 Qxg3+ 31.Kh1 f4 32.Bf1 Qf3+ 33.Bg2 Qh5 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Foguelman, Alberto"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "D25"]
[EventDate "1964.05.20"]
[PlyCount "42"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.Qb3 Bxf3 7.gxf3 c5 8.Qxb7
Nbd7 9.dxc5 Bxc5 10.f4 O-O 11.O-O Nd5 12.Rd1 Rb8 13.Qc6 Qh4 14.Nc3 Rb6 15.
Qxd7 Nxf4 16.Ne2 Nh3+ 17.Kg2 Nxf2 18.Rd4 Ng4 19.Rf4 Qxh2+ 20.Kf1 Bxe3 21.
Bd5 Bxf4 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Gligoric, Svetozar"]
[Black "Tringov, Georgi"]
[Result "1-0"]
[ECO "B99"]
[EventDate "1964.05.20"]
[PlyCount "103"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Nbd7 8.Qf3 
Qc7 9.O-O-O Be7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.a3 Rb8 14.h4 b4 15.axb4
Rxb4 16.h5 Nc5 17.g6 O-O 18.h6 fxg6 19.hxg7 Rf7 20.Rd2 Rxg7 21.Kb1 Bf6 22.
e5 Bb7 23.Qh3 Rxd4 24.Rxd4 dxe5 25.Rc4 exf4 26.Bg2 Bxg2 27.Qxg2 Rf7 28.Qg1
Be7 29.Ne4 Rf5 30.Qh2 Rh5 31.Qg2 Rxh1+ 32.Qxh1 Qe5 33.Nxc5 Bxc5 34.Qa8+ 
Kf7 35.Qxa6 Be7 36.Qa8 g5 37.Re4 Qd5 38.Qa4 Kf6 39.Re1 h5 40.Qe8 g4 41.
Qh8+ Kg6 42.Qg8+ Kf5 43.Qf7+ Kg5 44.Qxe7+ Kf5 45.Qf7+ Kg5 46.Qc7 Kf5 47.c4
Qd3+ 48.Ka1 Qd4 49.Qf7+ Kg5 50.Qe7+ Kf5 51.Qxe6+ Kg5 52.Qd5+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Lengyel, Levente"]
[Black "Vranesic, Zvonko"]
[Result "1-0"]
[ECO "C00"]
[EventDate "1964.05.20"]
[PlyCount "118"]

1.Nf3 Nf6 2.g3 e6 3.Bg2 d5 4.O-O Be7 5.d3 O-O 6.Nbd2 c5 7.e4 Nc6 8.Re1 Qc7
9.e5 Nd7 10.Qe2 Kh8 11.Nf1 f6 12.exf6 Nxf6 13.Bf4 Bd6 14.Bxd6 Qxd6 15.Ne5 
Nd4 16.Qd1 Nd7 17.Nxd7 Bxd7 18.c3 Nc6 19.Ne3 b5 20.a3 Rae8 21.d4 Re7 22.
Ng4 cxd4 23.cxd4 e5 24.Nxe5 Nxe5 25.dxe5 Rxe5 26.Qd4 Ref5 27.Re2 a6 28.Rc1
h6 29.Rc5 Be8 30.Rxd5 Rxd5 31.Qxd5 Qc7 32.Be4 Qb6 33.Bc2 Bg6 34.Bxg6 Qxg6 
35.Qe6 Qb1+ 36.Kg2 Qd3 37.Qe4 Qb3 38.h4 a5 39.Kh2 Qf7 40.Qc6 b4 41.axb4 
axb4 42.Qc5 b3 43.f4 Rd8 44.f5 Kh7 45.Qe3 Rd6 46.Qe4 Qf6 47.h5 Rd8 48.Qe6 
Kh8 49.Qxf6 gxf6 50.Kh3 Rd3 51.Re8+ Kg7 52.Rb8 Kf7 53.Rb7+ Kg8 54.Kg4 Re3 
55.Kf4 Rd3 56.g4 Rh3 57.Ke4 Rg3 58.Kd5 Rxg4 59.Ke6 Rg5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Pachman, Ludek"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "B20"]
[EventDate "1964.05.20"]
[PlyCount "38"]

1.e4 c5 2.g3 Nc6 3.Bg2 g6 4.Ne2 Bg7 5.O-O d6 6.c3 e5 7.d3 Nge7 8.Be3 O-O 
9.d4 cxd4 10.cxd4 Qb6 11.Nbc3 exd4 12.Na4 Qa5 13.Nxd4 Ne5 14.Bd2 Qa6 15.
Bg5 Bg4 16.f3 Nd3 17.Bxe7 Bxd4+ 18.Kh1 Rfe8 19.Bxd6 Bd7 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Perez Perez, Francisco Jose"]
[Black "Quinones Carillo, Oscar"]
[Result "0-1"]
[ECO "D15"]
[EventDate "1964.05.20"]
[PlyCount "102"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e4 b5 6.e5 Nd5 7.a4 e6 8.axb5 Nxc3 
9.bxc3 cxb5 10.Ng5 Bb7 11.Qh5 g6 12.Qg4 Be7 13.Be2 Nd7 14.h4 h5 15.Qg3 Bd5
16.O-O a5 17.Bd1 Nb6 18.Bc2 Rg8 19.Nf3 b4 20.cxb4 axb4 21.Bg5 b3 22.Bxe7 
Qxe7 23.Rxa8+ Nxa8 24.Bb1 Nb6 25.Ng5 Qb7 26.Nh7 Nd7 27.f4 Qa7 28.Qc3 Rh8 
29.Ng5 Qb7 30.Re1 Ke7 31.Be4 Rb8 32.Bxd5 Qxd5 33.Ne4 Qb5 34.f5 gxf5 35.Nd2
Qb4 36.Qe3 c3 37.Nf3 b2 38.d5 b1=Q 39.Qg5+ Ke8 40.d6 Qxe1+ 41.Nxe1 Qb6+ 
42.Kh2 Qd8 43.Qg8+ Nf8 44.Nf3 Rb4 45.Ng5 Rxh4+ 46.Kg1 Qb6+ 47.Kf1 Qb1+ 48.
Kf2 Qc2+ 49.Ke3 Qd2+ 50.Kf3 Rf4+ 51.Kg3 Rg4+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Porath, Yosef"]
[Black "Darga, Klaus"]
[Result "1/2-1/2"]
[ECO "E39"]
[EventDate "1964.05.20"]
[PlyCount "69"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 6.Nf3 Na6 7.Bd2 Nxc5 8.a3 
Bxc3 9.Bxc3 Nce4 10.Bxf6 Nxf6 11.e4 d6 12.Bd3 b6 13.O-O Bb7 14.Nd4 Nd7 15.
Rad1 a6 16.f4 g6 17.Nf3 b5 18.Kh1 Qb6 19.cxb5 axb5 20.Qf2 Qxf2 21.Rxf2 Nc5
22.Bxb5 Nxe4 23.Rc2 Bd5 24.Bd3 Rfb8 25.Nd4 Ra4 26.Bxe4 Bxe4 27.Re2 Bd5 28.
Kg1 Rc4 29.Kf2 Kf8 30.g3 Ke7 31.b4 Kd7 32.Red2 Rc3 33.Rd3 Rbc8 34.Ke3 
Rxd3+ 35.Rxd3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Portisch, Lajos"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "D23"]
[EventDate "1964.05.20"]
[PlyCount "102"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.Qa4+ c6 5.Qxc4 Bf5 6.Nc3 e6 7.g3 Nbd7 8.Bg2 
Bd6 9.O-O O-O 10.Nh4 Bg4 11.h3 Bh5 12.e4 Ne8 13.Be3 Be7 14.Nf3 Nd6 15.Qb3 
Bxf3 16.Bxf3 Qb6 17.d5 Qxb3 18.axb3 cxd5 19.exd5 e5 20.Rxa7 Rxa7 21.Bxa7 
f5 22.Be2 Rc8 23.Be3 Kf7 24.Nb5 Nf6 25.Nxd6+ Bxd6 26.Ra1 Kg6 27.Bc4 h5 28.
Ra7 Rb8 29.Ra5 h4 30.Rb5 hxg3 31.fxg3 Nd7 32.Ra5 Kf6 33.h4 f4 34.gxf4 exf4
35.Bf2 g5 36.hxg5+ Kxg5 37.Kg2 Ne5 38.Bc5 f3+ 39.Kf2 Bxc5+ 40.Rxc5 Kf4 41.
Rc7 Ra8 42.Rxb7 Ra2 43.Ke1 Ke3 44.Kd1 Nxc4 45.bxc4 Ra1+ 46.Kc2 f2 47.Rf7 
f1=Q 48.Rxf1 Rxf1 49.Kc3 Ke4 50.Kb4 Ke5 51.Kc5 Rf8 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Reshevsky, Samuel Herman"]
[Black "Evans, Larry Melvyn"]
[Result "1-0"]
[ECO "E54"]
[EventDate "1964.05.20"]
[PlyCount "116"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 d5 7.O-O dxc4 8.Bxc4 b6
9.a3 cxd4 10.axb4 dxc3 11.Qxd8 Rxd8 12.bxc3 Bb7 13.Be2 Ne4 14.Bb2 Nc6 15.
Rfd1 Rxd1+ 16.Rxd1 Rd8 17.Rxd8+ Nxd8 18.Nd4 Nc6 19.Nc2 f6 20.f3 Nd6 21.c4 
Kf7 22.Kf2 a6 23.e4 Ke7 24.Ke3 Kd7 25.Kd2 Bc8 26.g4 h6 27.h4 b5 28.c5 Nb7 
29.f4 Ke7 30.Kc3 Bd7 31.Ba3 g5 32.hxg5 hxg5 33.f5 Ne5 34.Ne3 Bc6 35.Kd4 
Nd8 36.Bd1 Bb7 37.Bc2 Kd7 38.Bb2 exf5 39.gxf5 Ndc6+ 40.Kc3 Ke7 41.Nd5+ Kf7
42.Bb3 a5 43.Ne3+ Ke7 44.bxa5 Nxa5 45.Bd5 Ba6 46.Kc2 Nac4 47.Bxc4 bxc4 48.
Bxe5 fxe5 49.c6 Kd6 50.f6 Ke6 51.c7 Kxf6 52.Nxc4 g4 53.Kd2 Kg5 54.Ke3 g3 
55.Kf3 Kh4 56.Nxe5 Kh3 57.Nd3 Kh2 58.Nf4 Bb7 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.26"]
[Round "6"]
[White "Smyslov, Vassily"]
[Black "Stein, Leonid"]
[Result "1/2-1/2"]
[ECO "A36"]
[EventDate "1964.05.20"]
[PlyCount "67"]

1.c4 g6 2.Nc3 Bg7 3.g3 c5 4.Bg2 Nc6 5.a3 Nf6 6.d3 O-O 7.Rb1 a5 8.e3 e6 9.
Nge2 d5 10.O-O Re8 11.Qc2 d4 12.Na4 Nd7 13.exd4 cxd4 14.b4 axb4 15.axb4 e5
16.b5 Ncb8 17.Bd2 e4 18.Nf4 exd3 19.Nxd3 Ne5 20.Nxe5 Rxe5 21.Bf4 Bf5 22.
Qb3 Re2 23.Nc5 Bxb1 24.Qxb1 Nd7 25.Nxb7 Qe7 26.c5 Raa2 27.c6 Nb6 28.Qd3 
Be5 29.Bf3 Reb2 30.Re1 f6 31.Bxe5 fxe5 32.Re2 Kg7 33.Rxb2 Rxb2 34.Kg2 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Bronstein, David"]
[Black "Gligoric, Svetozar"]
[Result "1/2-1/2"]
[ECO "C95"]
[EventDate "1964.05.20"]
[PlyCount "52"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Nb8 10.d4 Nbd7 11.c4 c6 12.c5 Qc7 13.cxd6 Bxd6 14.a4 Bb7 15.axb5 cxb5
16.Nc3 exd4 17.Nxd4 Nc5 18.Nd5 Bxd5 19.Bxd5 Rae8 20.Be3 Ncxe4 21.Bxe4 Nxe4
22.Rxa6 Bh2+ 23.Kh1 Bf4 24.Kg1 Bh2+ 25.Kh1 Bf4 26.Kg1 Bh2+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Darga, Klaus"]
[Black "Perez Perez, Francisco Jose"]
[Result "1/2-1/2"]
[ECO "B06"]
[EventDate "1964.05.20"]
[PlyCount "59"]

1.Nf3 d6 2.d4 Bg4 3.e4 g6 4.Bc4 Nf6 5.h3 Bxf3 6.Qxf3 Nc6 7.Qb3 e6 8.d5 Na5
9.Qa4+ c6 10.dxe6 Nxe4 11.exf7+ Kd7 12.Bd3 Nc5 13.Qg4+ Kc7 14.Bd2 b6 15.
O-O Bg7 16.Nc3 Qd7 17.Rae1 Nxd3 18.cxd3 Raf8 19.Nd5+ cxd5 20.Rc1+ Nc6 21.
Rxc6+ Qxc6 22.Rc1 Qxc1+ 23.Bxc1 Rxf7 24.Qe6 Rhf8 25.Qxd5 Rxf2 26.Qc4+ Kb8 
27.d4 d5 28.Qc3 Kb7 29.Be3 Rf1+ 30.Kh2 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Evans, Larry Melvyn"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "B41"]
[EventDate "1964.05.20"]
[PlyCount "92"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Nc3 Bb4 7.Qd3 d5 8.e5 Ne4
9.O-O Bxc3 10.bxc3 Nd7 11.c4 O-O 12.Qe3 Re8 13.Ba3 Qa5 14.cxd5 exd5 15.f4 
Qc3 16.Qxc3 Nxc3 17.Bf3 Nb6 18.Rfe1 Bd7 19.Bb4 Nb5 20.Rad1 Rac8 21.Nxb5 
Bxb5 22.c3 Bc6 23.Kf2 Na4 24.Rd2 b6 25.Re3 a5 26.Bd6 Bb7 27.Bxd5 Bxd5 28.
Rxd5 Nxc3 29.Rd2 f5 30.exf6 Ne4+ 31.Rxe4 Rxe4 32.fxg7 Rec4 33.Be5 Rc2 34.
Ke3 Rxd2 35.Kxd2 Rc4 36.g4 Ra4 37.h4 Rxa2+ 38.Kd3 Rg2 39.g5 Rh2 40.Kc4 
Rxh4 41.Kb5 Rh1 42.Kxb6 a4 43.Bd6 Ra1 44.Kb5 a3 45.Ka4 a2 46.Ka3 Rd1 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Ivkov, Borislav"]
[Black "Lengyel, Levente"]
[Result "1-0"]
[ECO "C94"]
[EventDate "1964.05.20"]
[PlyCount "113"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Nb8 10.d3 Nbd7 11.Nbd2 Bb7 12.Nf1 Nc5 13.Bc2 Re8 14.Ng3 Bf8 15.b4 
Ncd7 16.d4 a5 17.a3 axb4 18.cxb4 exd4 19.Nxd4 d5 20.Bg5 c5 21.e5 Rxe5 22.
Rxe5 Nxe5 23.bxc5 h6 24.Bf4 Nc6 25.Ndf5 Ne7 26.Nd6 Bc6 27.Qb1 Nc8 28.Ngf5 
Nxd6 29.Bxd6 Ne4 30.Bxf8 Qxf8 31.Bxe4 dxe4 32.Qb2 Bd7 33.Nd6 Qe7 34.Re1 
Bc6 35.Re3 Qe6 36.h4 f5 37.Rg3 Ra7 38.Qd2 Ra8 39.h5 Kh7 40.Qd4 Ra7 41.Rg6 
Qd5 42.Qxd5 Bxd5 43.Nxf5 Rc7 44.g4 e3 45.fxe3 Be4 46.c6 Bxc6 47.Kf2 Be4 
48.Rb6 Bxf5 49.gxf5 Rc5 50.e4 Rc3 51.Rb8 Rxa3 52.e5 b4 53.e6 Ra7 54.Ke3 
Ra1 55.Kd2 Ra7 56.Kc2 Ra2+ 57.Kd3 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Larsen, Bent"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "C24"]
[EventDate "1964.05.20"]
[PlyCount "49"]

1.e4 e5 2.Bc4 Nf6 3.d3 d5 4.exd5 Nxd5 5.Nf3 Nc6 6.O-O Bg4 7.Re1 Be7 8.h3 
Bxf3 9.Qxf3 Nd4 10.Qg4 O-O 11.Rxe5 Nf6 12.Qd1 Bd6 13.Re1 Re8 14.Be3 c5 15.
Nd2 Bc7 16.Nf3 Qd6 17.Bxd4 cxd4 18.Rxe8+ Rxe8 19.c3 dxc3 20.bxc3 Nh5 21.
Qa4 Re7 22.Qxa7 Nf4 23.Qxb7 h5 24.Qc8+ Kh7 25.h4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Quinones Carillo, Oscar"]
[Black "Benko, Pal"]
[Result "1-0"]
[ECO "B85"]
[EventDate "1964.05.20"]
[PlyCount "135"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bc4 Qb6 7.Nb3 e6 8.O-O 
Be7 9.Be3 Qc7 10.Be2 O-O 11.f4 a6 12.a4 b6 13.Bf3 Rd8 14.Qe2 Rb8 15.Qc4 
Rd7 16.Nd2 Na5 17.Qxc7 Rxc7 18.Rfd1 Nd7 19.Nf1 Kf8 20.Ng3 Bb7 21.Nge2 Nc4 
22.Bc1 Rbc8 23.Nd4 g6 24.Rb1 Nf6 25.Kf1 h5 26.h3 Ke8 27.Rd3 e5 28.Nde2 
exf4 29.Bxf4 Ne5 30.Rd4 Rc5 31.Rbd1 g5 32.Bxg5 Nxf3 33.Bxf6 Bxf6 34.gxf3 
Bxd4 35.Rxd4 Rd8 36.Rb4 b5 37.axb5 axb5 38.Nxb5 Rxc2 39.Nbd4 Rc7 40.Ke1 
Ba6 41.Nf4 Rc4 42.Rxc4 Bxc4 43.Nxh5 Be6 44.h4 Kd7 45.Nf6+ Kc7 46.Kf2 Rb8 
47.Kg3 Rxb2 48.h5 Rb1 49.h6 Rg1+ 50.Kf4 Rg6 51.h7 Rxf6+ 52.Nf5 Bxf5 53.
h8=Q Re6 54.exf5 Re7 55.Qa8 Rd7 56.Qd5 Kd8 57.Kg5 Ke7 58.Qe4+ Kd8 59.Qa8+ 
Ke7 60.Qd5 Kd8 61.Kf6 Kc7 62.Kg7 Kc8 63.f6 Kc7 64.Kf8 Kd8 65.f4 Kc8 66.Ke8
Kc7 67.Qa5+ Kc6 68.Qa4+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Rossetto, Hector Decio"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[ECO "A03"]
[EventDate "1964.05.20"]
[PlyCount "92"]

1.g3 d5 2.Bg2 Nf6 3.d3 g6 4.c3 Bg7 5.f4 O-O 6.Nf3 c5 7.O-O Nc6 8.Na3 b6 9.
e4 dxe4 10.dxe4 Ba6 11.Qxd8 Raxd8 12.Re1 e5 13.Bf1 Bxf1 14.Kxf1 Rfe8 15.f5
gxf5 16.exf5 e4 17.Nh4 Ne5 18.Bg5 Nd3 19.Re2 h6 20.Bxf6 Bxf6 21.Ng2 Nxb2 
22.Rxb2 Bxc3 23.Rab1 Bxb2 24.Rxb2 Rd3 25.Nc4 Red8 26.Ke2 Rc3 27.Nge3 Rdd3 
28.g4 f6 29.a4 Rd4 30.a5 Rcxc4 31.Nxc4 Rxc4 32.axb6 axb6 33.Rxb6 Kg7 34.
Rb7+ Kg8 35.Ke3 Rd4 36.Rc7 Rc4 37.h4 Rc3+ 38.Kxe4 Rc4+ 39.Kd5 Rxg4 40.h5 
Rg5 41.Ke6 Rxh5 42.Kxf6 Rh1 43.Rc8+ Kh7 44.Rxc5 h5 45.Kf7 Kh6 46.f6 Rf1 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Spassky, Boris"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[ECO "B17"]
[EventDate "1964.05.20"]
[PlyCount "119"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Ng3 e6 7.Bd3 c5 8.O-O 
cxd4 9.Nxd4 Nc5 10.Bb5+ Bd7 11.b4 Bxb5 12.Nxb5 a6 13.Nd4 Ncd7 14.a3 Be7 
15.Qe2 O-O 16.c4 a5 17.Bd2 Nb6 18.Be3 Qc7 19.Nb5 Qc6 20.Bxb6 Qxb6 21.Nf5 
exf5 22.Qxe7 axb4 23.Qxb4 Ne4 24.Rad1 Rfd8 25.Rd5 g6 26.a4 Rxd5 27.cxd5 
Qc5 28.Qxc5 Nxc5 29.Ra1 Rxa4 30.Rxa4 Nxa4 31.f4 Nb6 32.Nc3 Kf8 33.Kf2 Nc4 
34.Ke2 Ke7 35.Kd3 Na3 36.Nd1 Kd6 37.Kd4 Nb5+ 38.Kc4 Nc7 39.Ne3 b5+ 40.Kd4 
h5 41.g3 Na8 42.Nc2 Nc7 43.Nb4 h4 44.gxh4 Ne8 45.Nc6 Nf6 46.Ne5 Nxd5 47.
Nxf7+ Ke7 48.Ne5 Nxf4 49.Kc5 Kf6 50.Nf3 Kg7 51.Kxb5 Kh6 52.Kc4 Kh5 53.Kd4 
Kg4 54.Ke3 Ng2+ 55.Kf2 Nxh4 56.Ng1 f4 57.h3+ Kh5 58.Ne2 g5 59.Nd4 Kg6 60.
Ke2 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Stein, Leonid"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "C95"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Nb8 10.d4 Nbd7 11.c4 c6 12.c5 Qc7 13.cxd6 Bxd6 14.Bg5 exd4 15.Qxd4 c5
16.Qe3 c4 17.Bc2 Re8 18.Bxf6 Nxf6 19.e5 Bb4 20.Nc3 Bb7 21.Qf4 Bxc3 22.bxc3
Bxf3 23.Qxf3 Nd7 24.e6 Nf6 25.a4 Rab8 26.axb5 axb5 27.Qf5 fxe6 28.Rxe6 
Rxe6 29.Qxe6+ Qf7 30.Qe5 Qe8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Tal, Mikhail"]
[Black "Foguelman, Alberto"]
[Result "1-0"]
[ECO "B18"]
[EventDate "1964.05.20"]
[PlyCount "99"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.N1e2 Nf6 7.h4 h6 8.Nf4 
Bh7 9.Bc4 e5 10.Qe2 Nbd7 11.O-O Qe7 12.dxe5 Nxe5 13.Rd1 Nfd7 14.Bd2 O-O-O 
15.Bc3 Re8 16.Re1 g5 17.hxg5 hxg5 18.Ne6 f6 19.Rad1 Bg6 20.f4 gxf4 21.Nxf4
Qh7 22.Be6 Bc5+ 23.Bd4 Qh2+ 24.Kf2 Qh4 25.Bxd7+ Nxd7 26.Qd2 Bd6 27.Rxe8+ 
Bxe8 28.Rh1 Bxf4 29.Rxh4 Rxh4 30.Be3 Bxe3+ 31.Qxe3 Bg6 32.c3 a6 33.Kg1 Rg4
34.Qf3 Rh4 35.Ne2 Be4 36.Qg3 Rh5 37.Qg8+ Kc7 38.Nf4 Re5 39.c4 c5 40.Ne6+ 
Kd6 41.Nd8 Ke7 42.Nf7 Re6 43.Qg7 Ke8 44.g4 Bd3 45.b3 b5 46.g5 fxg5 47.Qg8+
Nf8 48.Nxg5 Rf6 49.Qd5 bxc4 50.Qe5+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Tringov, Georgi"]
[Black "Porath, Yosef"]
[Result "1/2-1/2"]
[ECO "B40"]
[EventDate "1964.05.20"]
[PlyCount "79"]

1.e4 e6 2.d3 d5 3.Nd2 c5 4.Ngf3 Nc6 5.g3 dxe4 6.dxe4 b6 7.c3 Nf6 8.Bb5 Bb7
9.Qa4 Qc7 10.Ne5 Rc8 11.Qxa7 Bd6 12.Bxc6+ Bxc6 13.Qxc7 Rxc7 14.Nxc6 Rxc6 
15.f3 Nd7 16.Nc4 b5 17.Nxd6+ Rxd6 18.Ke2 Ke7 19.Be3 Ra8 20.a3 Rc6 21.f4 
Nb6 22.b3 f5 23.exf5 Nd5 24.Rhe1 exf5 25.Kd2 Nxe3 26.Rxe3+ Kf6 27.Kc2 h6 
28.c4 bxc4 29.bxc4 g5 30.Rae1 gxf4 31.gxf4 Rd8 32.Rd3 Rxd3 33.Kxd3 Ra6 34.
Ra1 Kg6 35.a4 Kh5 36.a5 Kg4 37.Ke3 Re6+ 38.Kd3 Ra6 39.Ke3 Re6+ 40.Kd3 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.28"]
[Round "7"]
[White "Vranesic, Zvonko"]
[Black "Reshevsky, Samuel Herman"]
[Result "0-1"]
[ECO "A73"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 
9.O-O Nbd7 10.Nd2 Ne8 11.Nc4 Ne5 12.Ne3 f5 13.f4 Nf7 14.exf5 gxf5 15.Bd3 
Nh6 16.Qc2 Bd7 17.a4 a6 18.Rf3 Qh4 19.Qe2 Nc7 20.Rh3 Qf6 21.Bd2 b5 22.Rh5 
b4 23.Rg5 Rae8 24.h3 Kh8 25.Kh1 Nf7 26.Rg3 Qh4 27.Rxg7 Kxg7 28.Bxf5 Rxe3 
29.Qxe3 Bxf5 30.g4 Re8 31.Qf3 Bg6 32.f5 Ne5 33.Qg2 bxc3 34.Be1 cxb2 35.Rb1
Qf6 36.fxg6 Nd3 37.Ba5 Qxg6 38.Rxb2 Nxb2 39.Qxb2+ Kg8 40.Bxc7 Qf7 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Benko, Pal"]
[Black "Darga, Klaus"]
[Result "0-1"]
[ECO "A07"]
[EventDate "1964.05.20"]
[PlyCount "68"]

1.g3 d5 2.Nf3 c6 3.Bg2 Bg4 4.d3 Nd7 5.h3 Bxf3 6.Bxf3 Ngf6 7.O-O e6 8.Nd2 
Bc5 9.c3 O-O 10.d4 Bb6 11.e4 e5 12.exd5 cxd5 13.dxe5 Nxe5 14.Nb3 Ne4 15.
Kg2 Re8 16.Nd4 Qf6 17.Be2 Rad8 18.Be3 Nd6 19.Nc2 Bxe3 20.Nxe3 Ndc4 21.Qd4 
Qe6 22.Qxa7 Nc6 23.Qc5 Nd2 24.Bd3 Nxf1 25.Rxf1 d4 26.cxd4 Nxd4 27.Rd1 b6 
28.Qc4 Qd7 29.Kg1 Re5 30.Bf1 Rxe3 31.Rxd4 Rxg3+ 32.fxg3 Qxd4+ 33.Qxd4 Rxd4
34.b3 Rd1 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Berger, Bela"]
[Black "Quinones Carillo, Oscar"]
[Result "1/2-1/2"]
[ECO "A12"]
[EventDate "1964.05.20"]
[PlyCount "165"]

1.Nf3 d5 2.g3 Nf6 3.Bg2 c6 4.O-O Bf5 5.d3 e6 6.Nbd2 h6 7.c4 Be7 8.b3 Nbd7 
9.Bb2 O-O 10.Rc1 Bh7 11.Rc2 a5 12.a3 Qb6 13.Qa1 Rfe8 14.Ne5 Bf8 15.Bh3 
Rad8 16.Rfc1 Nxe5 17.Bxe5 Nd7 18.c5 Qa7 19.Bd4 f6 20.f4 Qb8 21.Nf3 Re7 22.
b4 Qc7 23.b5 Rde8 24.b6 Qb8 25.Re1 Qd8 26.e4 dxe4 27.dxe4 e5 28.fxe5 Nxe5 
29.Nxe5 fxe5 30.Bf2 Qd3 31.Qa2+ Kh8 32.Rd2 Qf3 33.Bg2 Qg4 34.Qc4 Bg8 35.
Qc3 a4 36.Bf3 Qh3 37.Bd1 Ra8 38.Qb4 Rf7 39.Qc3 Be7 40.Qxe5 Bg5 41.Rde2 
Raf8 42.Qd4 Rf3 43.Bxa4 Be3 44.Qxe3 Rxe3 45.Bxe3 Bc4 46.Rf2 Ra8 47.Bd1 
Rxa3 48.Bf3 Qd7 49.Rd2 Qe7 50.Kg2 Be6 51.Rd6 Qf7 52.Bd1 Bc4 53.Bf3 Bd3 54.
e5 Bf5 55.e6 Bxe6 56.Be4 Ra8 57.Red1 Rf8 58.Rd8 Bg4 59.Rxf8+ Qxf8 60.Rd4 
Bf5 61.Bxf5 Qxf5 62.g4 Qc2+ 63.Bf2 Kh7 64.Rd6 Qe4+ 65.Kg3 Qe5+ 66.Kg2 Qg5 
67.Kf3 Qe7 68.h4 Qf7+ 69.Kg3 Qb3+ 70.Kg2 Qc4 71.Kf3 Qb3+ 72.Kg2 Qc4 73.Kf3
Qf1 74.Kg3 Qe2 75.h5 Qe5+ 76.Kf3 Qh2 77.Bd4 Qh3+ 78.Kf4 Qf1+ 79.Kg3 Qe1+ 
80.Kf3 Qf1+ 81.Kg3 Qe1+ 82.Kf3 Qf1+ 83.Kg3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Bilek, Istvan"]
[Black "Larsen, Bent"]
[Result "1/2-1/2"]
[ECO "B31"]
[EventDate "1964.05.20"]
[PlyCount "86"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Qe2 O-O 7.d4 cxd4 8.cxd4 
d5 9.e5 Ne8 10.Be3 Nc7 11.Bxc6 bxc6 12.Rc1 Bb7 13.Nbd2 f6 14.Nb3 Ne6 15.
exf6 exf6 16.Qd2 a5 17.Bh6 Bxh6 18.Qxh6 a4 19.Nc5 Nxc5 20.dxc5 Re8 21.Nd4 
Re4 22.Qd2 Qa5 23.Rc2 Qxd2 24.Rxd2 Ra5 25.f3 Re5 26.Rc1 Kf7 27.Rd3 Ke8 28.
Ra3 Ra8 29.Kf2 Kd7 30.h3 h5 31.g3 g5 32.g4 Kc7 33.b4 axb3 34.Rxa8 b2 35.
Rb1 Bxa8 36.gxh5 Re8 37.Rxb2 Rh8 38.Re2 Rxh5 39.Re7+ Kb8 40.Re6 Rxh3 41.
Nxc6+ Bxc6 42.Rxc6 f5 43.Rd6 g4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Evans, Larry Melvyn"]
[Black "Vranesic, Zvonko"]
[Result "1/2-1/2"]
[ECO "D58"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.e3 h6 6.Bh4 O-O 7.Qc2 b6 8.Nf3 Bb7 
9.cxd5 Nxd5 10.Bxe7 Qxe7 11.Be2 Nd7 12.Nxd5 Bxd5 13.O-O c5 14.Rfc1 Rfd8 
15.dxc5 Nxc5 16.Ne1 Qh4 17.Bf3 Qb4 18.Rd1 Bxf3 19.Nxf3 Qe4 20.Qxe4 Nxe4 
21.Rxd8+ Rxd8 22.Rc1 f6 23.Kf1 Rd7 24.Ke2 Kf7 25.Rc2 Ke7 26.Nd2 Rxd2+ 27.
Rxd2 Nxd2 28.Kxd2 Kd6 29.Kd3 b5 30.Kc3 Kc5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Foguelman, Alberto"]
[Black "Stein, Leonid"]
[Result "1/2-1/2"]
[ECO "E92"]
[EventDate "1964.05.20"]
[PlyCount "64"]

1.d4 c5 2.d5 Nf6 3.c4 d6 4.Nc3 g6 5.e4 Bg7 6.Nf3 O-O 7.Be2 e5 8.h3 a6 9.
Be3 Nh5 10.Qd2 Nf4 11.Bf1 Qa5 12.g3 Nh5 13.Be2 Nf6 14.Kf1 b5 15.cxb5 axb5 
16.Nxb5 Nxe4 17.Qxa5 Rxa5 18.Nd2 Nxd2+ 19.Bxd2 Ra6 20.Kg2 Bb7 21.Nc3 Ra8 
22.Rhd1 Nd7 23.Bg5 Rfb8 24.a4 h6 25.Be3 f5 26.f3 Kf7 27.Nb5 Bf8 28.Nc7 Ra5
29.Bd2 Ra7 30.Nb5 Raa8 31.Nc7 Ra7 32.Nb5 Raa8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Gligoric, Svetozar"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "78"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.Nbd2 cxd4 13.cxd4 Nc6 14.Nb3 a5 15.Be3 a4 
16.Nbd2 Bf6 17.Nf1 exd4 18.Nxd4 Nxd4 19.Bxd4 Ne5 20.Ne3 Bb7 21.Qd2 a3 22.
b4 Bg5 23.Rad1 Rc8 24.Qe2 Qc7 25.Bb3 Bxe4 26.Qxb5 Rb8 27.Nd5 Bxd5 28.Qxd5 
Rxb4 29.Bxe5 dxe5 30.Qxe5 Qxe5 31.Rxe5 Bd8 32.Rd7 Bb6 33.g3 g6 34.Rd3 Rd4 
35.Rxd4 Bxd4 36.Ra5 Re8 37.Rd5 Bf6 38.Rd6 Re1+ 39.Kg2 Be7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Lengyel, Levente"]
[Black "Rossetto, Hector Decio"]
[Result "1-0"]
[ECO "D56"]
[EventDate "1964.05.20"]
[PlyCount "145"]

1.c4 e6 2.Nf3 d5 3.d4 Nf6 4.Nc3 Be7 5.Bg5 h6 6.Bh4 O-O 7.e3 Nbd7 8.Rc1 c6 
9.Qc2 Ne4 10.Bxe7 Qxe7 11.Bd3 Nxc3 12.Qxc3 dxc4 13.Bxc4 Re8 14.Rd1 b6 15.
O-O Bb7 16.e4 c5 17.Qe3 Rac8 18.Bd3 Red8 19.Bb1 cxd4 20.Rxd4 e5 21.Rdd1 a5
22.a3 Ba6 23.Rfe1 Bc4 24.Bd3 Bb3 25.Rc1 Nc5 26.Bb5 a4 27.Nd2 Qg5 28.Qxg5 
hxg5 29.Nxb3 axb3 30.Bc4 Kf8 31.g3 Ke7 32.Re3 Rd2 33.Bxb3 Rxb2 34.Bd5 Rd8 
35.Rc4 Rd7 36.Rf3 f6 37.Kg2 g4 38.Re3 Rd2 39.Rcc3 Ra7 40.Kf1 Ra4 41.Bc4 
Rd1+ 42.Kg2 Rd4 43.Bb5 Ra7 44.f3 Rd2+ 45.Re2 Rad7 46.Rc2 Rxc2 47.Rxc2 
gxf3+ 48.Kxf3 Rd4 49.Re2 Kd6 50.h4 Nb3 51.Ke3 Rd1 52.Rb2 Nd4 53.Be2 Ra1 
54.Rxb6+ Kc7 55.Rb2 Rxa3+ 56.Kf2 Kc6 57.Bg4 Ra7 58.Rb8 Kc5 59.Rc8+ Kb4 60.
h5 Ra2+ 61.Kg1 Rc2 62.Rb8+ Ka3 63.Rb7 Ne2+ 64.Bxe2 Rxe2 65.Rxg7 Rxe4 66.h6
Re1+ 67.Kg2 Re2+ 68.Kg1 Re1+ 69.Kg2 Re2+ 70.Kh3 Re1 71.Kg4 Kb3 72.Kf5 Rf1+
73.Kg6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Pachman, Ludek"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "D40"]
[EventDate "1964.05.20"]
[PlyCount "110"]

1.Nf3 c5 2.c4 Nc6 3.Nc3 Nf6 4.e3 e6 5.d4 d5 6.dxc5 Bxc5 7.a3 dxc4 8.Qxd8+ 
Kxd8 9.Bxc4 Bd7 10.b4 Bd6 11.Nb5 Bb8 12.Nbd4 Nxd4 13.Nxd4 Ke7 14.Bb2 Rc8 
15.Bd3 a5 16.b5 Bd6 17.Ke2 Nd5 18.Be4 Rc5 19.a4 f5 20.Bxd5 Rxd5 21.Rhc1 e5
22.Nb3 Be6 23.Rc2 Bb4 24.Ba3 Rd7 25.Nd2 e4 26.Bxb4+ axb4 27.Rb2 Rc8 28.a5 
Rd5 29.Nb3 Rxb5 30.Nd4 Bc4+ 31.Kd2 Rbc5 32.Rxb4 Ba6 33.Rb2 g6 34.Rc2 Kd6 
35.Rxc5 Rxc5 36.h4 Kd5 37.g3 Rc4 38.h5 Rc5 39.Ra3 Ke5 40.hxg6 hxg6 41.Nb3 
Rc8 42.Ra4 Rh8 43.Nc5 Rd8+ 44.Kc3 Rd5 45.Nxa6 bxa6 46.Ra2 Rb5 47.Kc4 Kf6 
48.g4 fxg4 49.Kd4 Kf5 50.Rc2 Rxa5 51.Rc8 Ra4+ 52.Kd5 g3 53.Rf8+ Kg4 54.
fxg3 Kxg3 55.Ke5 g5 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Perez Perez, Francisco Jose"]
[Black "Tringov, Georgi"]
[Result "1/2-1/2"]
[ECO "B53"]
[EventDate "1964.05.20"]
[PlyCount "82"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4 Nc6 5.Bb5 Qa5+ 6.Nc3 Qxb5 7.Nxb5 Nxd4 8.
Nfxd4 Kd8 9.Bg5 Nf6 10.f3 Bd7 11.a4 a6 12.Nc3 Rc8 13.O-O e6 14.Rfd1 Be7 
15.Rd2 Ne8 16.Bxe7+ Kxe7 17.Nd1 Nf6 18.Ne3 Rhd8 19.c4 g6 20.b3 Be8 21.g4 
Nd7 22.Kf2 Nc5 23.Rb1 b6 24.Kg3 h6 25.h4 Rb8 26.h5 g5 27.Kf2 Kf6 28.Ndf5 
exf5 29.Nxf5 b5 30.cxb5 axb5 31.a5 b4 32.Rbd1 Ra8 33.Rxd6+ Rxd6 34.Rxd6+ 
Ne6 35.a6 Rc8 36.Nxh6 Rc2+ 37.Ke1 Rb2 38.Nf5 Rxb3 39.Rd5 Nc7 40.Rd6+ Ne6 
41.Rd5 Nc7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Porath, Yosef"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "E11"]
[EventDate "1964.05.20"]
[PlyCount "82"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 a5 5.Nc3 O-O 6.e3 b6 7.Bd3 Bb7 8.O-O d6 
9.Qc2 Nbd7 10.a3 Bxc3 11.Bxc3 Re8 12.Ng5 h6 13.Ne4 Nxe4 14.Bxe4 Bxe4 15.
Qxe4 a4 16.Rad1 f5 17.Qc6 Ra7 18.Bb4 Qc8 19.Rc1 Nf6 20.c5 bxc5 21.dxc5 d5 
22.Bc3 Qa6 23.Qxa6 Rxa6 24.Bxf6 gxf6 25.Rfd1 Rb8 26.Rc2 Rb5 27.Rd4 c6 28.
Kf1 Raa5 29.Ke1 e5 30.Rh4 Kg7 31.Kd2 e4 32.Rf4 h5 33.Rxf5 Kg6 34.Rf4 f5 
35.h3 Rxc5 36.Rxc5 Rxc5 37.g4 fxg4 38.hxg4 h4 39.Rf8 Kg7 40.Rf4 Rb5 41.Kc3
Kg6 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Portisch, Lajos"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "E15"]
[EventDate "1964.05.20"]
[PlyCount "128"]

1.c4 Nf6 2.d4 e6 3.Nf3 b6 4.g3 Ba6 5.Qa4 c6 6.Nc3 Be7 7.Bg2 O-O 8.Bf4 d6 
9.Rc1 Qc8 10.O-O Nbd7 11.Rfd1 Bb7 12.e4 Nh5 13.Bg5 Bxg5 14.Nxg5 Nhf6 15.
Qa3 h6 16.Nf3 c5 17.Ne1 a6 18.dxc5 dxc5 19.Qb3 Qc7 20.f4 e5 21.Nd5 Bxd5 
22.exd5 Qd6 23.Nd3 Rfe8 24.Re1 exf4 25.Nxf4 Ne5 26.Qc3 b5 27.b3 bxc4 28.
bxc4 Rab8 29.a3 Re7 30.Re2 Rbe8 31.Rce1 Ned7 32.Bh3 Rxe2 33.Rxe2 Rxe2 34.
Nxe2 Qe5 35.Qd3 Qa1+ 36.Bf1 Ng4 37.h3 Nge5 38.Qc3 Qb1 39.Nf4 Qe4 40.Kf2 g5
41.Nh5 f5 42.Qb3 Qd4+ 43.Kg2 Qd2+ 44.Kg1 Kf7 45.Bg2 Qe1+ 46.Bf1 Qd2 47.Bg2
Qe2 48.g4 f4 49.Qb1 Qe3+ 50.Kh2 Qd3 51.Qb7 Qd2 52.Kg1 f3 53.Bf1 Qe3+ 54.
Kh1 Qe1 55.Kg1 Qe3+ 56.Kh1 Qf2 57.Qb1 Kg8 58.Qa1 Kf8 59.d6 Kf7 60.Qd1 Ke8 
61.Ng7+ Kd8 62.Qb1 Nxg4 63.hxg4 Qh4+ 64.Kg1 Qg3+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.29"]
[Round "8"]
[White "Reshevsky, Samuel Herman"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "A36"]
[EventDate "1964.05.20"]
[PlyCount "44"]

1.c4 c5 2.Nc3 g6 3.g3 Bg7 4.Bg2 Nc6 5.a3 a6 6.Rb1 Rb8 7.Na4 Qa5 8.Nf3 d6 
9.O-O b5 10.cxb5 axb5 11.Nc3 b4 12.axb4 cxb4 13.Na4 Nh6 14.b3 O-O 15.Bb2 
e5 16.Rc1 Bd7 17.d3 Nf5 18.e3 Qa6 19.Ra1 Qb5 20.Rc1 Qa6 21.Ra1 Qb5 22.Rc1 
Qa6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Bronstein, David"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "B06"]
[EventDate "1964.05.20"]
[PlyCount "65"]

1.Nf3 d6 2.d4 g6 3.e4 Bg7 4.c3 Nf6 5.Qc2 O-O 6.Bg5 c6 7.Nbd2 b5 8.a4 bxa4 
9.Rxa4 Nbd7 10.b4 Bb7 11.Ba6 Bxa6 12.Rxa6 Ne8 13.O-O h6 14.Be3 f5 15.Qa2+ 
Kh7 16.exf5 gxf5 17.Nb3 f4 18.Bc1 Qc7 19.Qb1+ Kg8 20.Qe4 Nb8 21.Ra5 d5 22.
Qe6+ Kh7 23.Re1 Nd6 24.Nc5 Nf5 25.Qe2 Qd6 26.Qd3 Nd7 27.Ne6 Rf7 28.Bxf4 
Be5 29.Neg5+ hxg5 30.Nxg5+ Kg8 31.Nxf7 Kxf7 32.Qxf5+ Qf6 33.Qh5+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Darga, Klaus"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "B65"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O
O-O 9.f4 Nxd4 10.Qxd4 h6 11.Bh4 Qa5 12.Bc4 e5 13.fxe5 dxe5 14.Qd3 Be6 15.
Bxe6 fxe6 16.Qc4 Qb6 17.Na4 Qc6 18.Qxc6 bxc6 19.Rhe1 Rfd8 20.c3 Kf7 21.
Rxd8 Rxd8 22.Kc2 Ng4 23.Bxe7 Kxe7 24.h3 Nf6 25.Nc5 Nd7 26.Nxd7 Rxd7 27.Re2
h5 28.Kb3 Rd1 29.Kc4 Kd6 30.Re3 Rb1 31.b4 Rb2 32.Rd3+ Ke7 33.Rg3 Kf6 34.a4
Re2 35.Kc5 Rxe4 36.Kxc6 Rc4+ 37.Kb5 Rc7 38.Re3 Kf5 39.c4 Kf4 40.Re1 e4 41.
c5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Ivkov, Borislav"]
[Black "Evans, Larry Melvyn"]
[Result "1/2-1/2"]
[ECO "B92"]
[EventDate "1964.05.20"]
[PlyCount "129"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O 
O-O 9.Be3 Qc7 10.a4 Nbd7 11.a5 b5 12.axb6 Nxb6 13.Bxb6 Qxb6 14.Bc4 a5 15.
Nd5 Nxd5 16.Bxd5 Ra7 17.Ra2 g6 18.Nd2 Bd7 19.Nc4 Qc5 20.Qd2 a4 21.Rfa1 Rc7
22.b4 Qd4 23.c3 Qxd2 24.Rxd2 Be6 25.Nb6 Rxc3 26.Nxa4 Rc7 27.b5 Bxd5 28.b6 
Rb7 29.Rxd5 Ra8 30.Rdd1 Bd8 31.Nc3 Rxa1 32.Rxa1 Kg7 33.Rb1 Rxb6 34.Rxb6 
Bxb6 35.Nd5 Bc5 36.g4 h5 37.gxh5 f5 38.hxg6 fxe4 39.Kf1 Kxg6 40.Ke2 Kf5 
41.h4 Ba3 42.Ne3+ Ke6 43.h5 d5 44.h6 Bf8 45.h7 Bg7 46.Nf1 Bf6 47.Ne3 Bh8 
48.Nf1 Kf6 49.Ne3 d4 50.Nf1 Kf5 51.Ng3+ Kf4 52.Nh5+ Kg4 53.Ng3 e3 54.Ne4 
exf2 55.Nxf2+ Kf5 56.Kd3 Kg6 57.Ne4 Kxh7 58.Nc5 Kg6 59.Ne4 Kf5 60.Nd2 Bg7 
61.Ne4 Bh6 62.Nf2 Be3 63.Ne4 Kf4 64.Nf6 Kf3 65.Ne4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Larsen, Bent"]
[Black "Lengyel, Levente"]
[Result "1-0"]
[ECO "C28"]
[EventDate "1964.05.20"]
[PlyCount "137"]

1.e4 e5 2.Bc4 Nf6 3.Nc3 Nc6 4.d3 Bb4 5.Nf3 d6 6.O-O Bxc3 7.bxc3 Na5 8.Bb3 
Nxb3 9.axb3 O-O 10.c4 Qe7 11.Nd2 Nd7 12.Qh5 Nc5 13.f4 exf4 14.Rxf4 Qe5 15.
Qxe5 dxe5 16.Rf2 Ne6 17.Nf3 f6 18.Be3 a6 19.Nh4 Bd7 20.Nf5 Rae8 21.h3 Rf7 
22.Kh2 Nf8 23.g4 Ng6 24.Ng3 Ne7 25.Raf1 Be6 26.Ne2 Nc6 27.Kg3 Nb8 28.Nc3 
c6 29.c5 Nd7 30.Na4 Rd8 31.h4 Rdf8 32.Nb2 Rc8 33.Ra1 Kf8 34.Ra4 Ke8 35.Rb4
Rc7 36.c3 g6 37.d4 h5 38.g5 fxg5 39.Bxg5 exd4 40.Rxf7 Kxf7 41.cxd4 Nf6 42.
Kf4 a5 43.Ra4 Bxb3 44.Rxa5 Ng4 45.Ra3 Be6 46.Nd3 Kg7 47.Ne5 Rc8 48.Be7 Re8
49.Bd6 Nxe5 50.Bxe5+ Kf7 51.Kg5 Bg4 52.Ra1 Re6 53.Rb1 Re7 54.Rf1+ Ke8 55.
Kxg6 Kd7 56.Rf4 Be2 57.Bd6 Re6+ 58.Kg5 Bd3 59.Be5 Be2 60.Rf2 Bd3 61.Kf4 
Rg6 62.Ke3 Bc4 63.Rf5 Rg1 64.Rxh5 Re1+ 65.Kf4 Bd3 66.Rh7+ Ke6 67.d5+ cxd5 
68.exd5+ Kxd5 69.Rd7+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Quinones Carillo, Oscar"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[ECO "B75"]
[EventDate "1964.05.20"]
[PlyCount "61"]

1.e4 c5 2.Nf3 g6 3.d4 Bg7 4.Nc3 Qa5 5.Be3 Nf6 6.Nd2 cxd4 7.Nb3 Qd8 8.Nxd4 
d6 9.f3 Nc6 10.Qd2 Bd7 11.Bc4 Rc8 12.Bb3 Ne5 13.O-O-O Nc4 14.Bxc4 Rxc4 15.
Kb1 a6 16.Nde2 O-O 17.Bh6 Bxh6 18.Qxh6 Qb6 19.h4 Rfc8 20.Rd3 R4c5 21.h5 
Bb5 22.hxg6 fxg6 23.Nf4 Bxd3 24.Nfd5 Rxd5 25.Nxd5 Qf2 26.Nxf6+ Kf7 27.cxd3
Kxf6 28.Qf4+ Kg7 29.Qh6+ Kf6 30.Qf4+ Kg7 31.Qh6+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Rossetto, Hector Decio"]
[Black "Reshevsky, Samuel Herman"]
[Result "0-1"]
[ECO "E95"]
[EventDate "1964.05.20"]
[PlyCount "68"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.O-O c6 8.Re1 Nbd7 
9.Bf1 exd4 10.Nxd4 a5 11.Be3 Nc5 12.f3 Qe7 13.Nb3 Nfd7 14.Qc2 Re8 15.Rad1 
Be5 16.Nc1 Nf8 17.Qd2 Be6 18.Bg5 Qc7 19.g3 a4 20.Be3 Rad8 21.b4 axb3 22.
axb3 Qa5 23.N3a2 Qc7 24.Qc2 f5 25.b4 Ncd7 26.f4 Bg7 27.Nc3 Nf6 28.exf5 
Bxf5 29.Qd2 Ng4 30.Bd4 Bxd4+ 31.Qxd4 Ne6 32.Qd2 Qb6+ 33.Kg2 Nf8 34.Kf3 Qg1
0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Smyslov, Vassily"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "B16"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 6.Nf3 Bg4 7.Be2 Qc7 8.
h3 Bh5 9.O-O Nd7 10.d5 Rd8 11.c4 Nb6 12.Be3 Bxf3 13.Bxb6 axb6 14.Bxf3 cxd5
15.cxd5 Bh6 16.Qa4+ Kf8 17.Rfe1 Bf4 18.Re4 Bh2+ 19.Kh1 Bd6 20.Rc4 Qd7 21.
Qc2 Bb8 22.Rc1 Qd6 23.g3 h5 24.h4 Kg7 25.Qe2 f5 26.Kg2 b5 27.R4c3 f4 28.
Bxh5 Qxd5+ 29.Bf3 Qe5 30.Qxe5+ Bxe5 31.Rc5 Bxb2 32.R1c2 Bd4 33.Rxb5 fxg3 
34.fxg3 b6 35.Rg5+ Kf6 36.Rc6+ e6 37.Be4 Rc8 38.a4 Rxc6 39.Bxc6 Rc8 40.Bb5
Be5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Spassky, Boris"]
[Black "Foguelman, Alberto"]
[Result "1-0"]
[ECO "B18"]
[EventDate "1964.05.20"]
[PlyCount "41"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Bc4 Nf6 7.N1e2 e6 8.h4 
Nh5 9.Nxh5 Bxh5 10.f3 h6 11.Nf4 Bd6 12.Qe2 Bxf4 13.Bxf4 Nd7 14.g4 Bg6 15.
O-O-O Qf6 16.Bd6 O-O-O 17.Bb3 h5 18.Qe3 Rhg8 19.Bf4 Qe7 20.d5 Nc5 21.d6 
1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Stein, Leonid"]
[Black "Gligoric, Svetozar"]
[Result "1-0"]
[ECO "C95"]
[EventDate "1964.05.20"]
[PlyCount "109"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Nb8 10.d4 Nbd7 11.Nh4 Nb6 12.Nf5 Bxf5 13.exf5 exd4 14.cxd4 d5 15.Nc3 
Re8 16.Qf3 c6 17.Bc2 Bd6 18.Bg5 Nbd7 19.g4 h6 20.Rxe8+ Qxe8 21.Bd2 Qd8 22.
Kg2 Qb6 23.Be3 b4 24.Na4 Qd8 25.h4 Ne4 26.Rh1 c5 27.Bxe4 dxe4 28.Qxe4 Nf6 
29.Qf3 cxd4 30.Bxd4 Rb8 31.g5 Nh7 32.gxh6 Bf8 33.Bxg7 Bxg7 34.Qg3 Qd5+ 35.
Kh2 Qe5 36.Rg1 Qxg3+ 37.Rxg3 Nf6 38.Rxg7+ Kf8 39.Nc5 Rb5 40.Ne6+ fxe6 41.
fxe6 Nd5 42.Kg3 Rb6 43.Rd7 Kg8 44.Rxd5 Rxe6 45.b3 Kh7 46.Ra5 Kxh6 47.f4 
Kg7 48.Kg4 Rc6 49.h5 Kh7 50.Kg5 Kg7 51.f5 Rd6 52.Rc5 Rd2 53.h6+ Kh7 54.
Rc7+ Kg8 55.f6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Tal, Mikhail"]
[Black "Porath, Yosef"]
[Result "1-0"]
[ECO "C09"]
[EventDate "1964.05.20"]
[PlyCount "79"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nc6 5.exd5 exd5 6.Bb5 Bd6 7.O-O Ne7 8.dxc5
Bxc5 9.Nb3 Bb6 10.Be3 Bxe3 11.Bxc6+ bxc6 12.fxe3 O-O 13.Qd2 Qb6 14.Qc3 Rb8
15.Rab1 Ba6 16.Rf2 Bc4 17.Ne5 Rb7 18.Na5 Rc7 19.Naxc4 dxc4 20.Nxc4 Qc5 21.
Qd4 Qxd4 22.exd4 c5 23.dxc5 Rxc5 24.Re1 Ng6 25.b3 Rd8 26.Rfe2 f6 27.Re8+ 
Rxe8 28.Rxe8+ Nf8 29.Re7 a6 30.a4 h5 31.a5 Rc6 32.Rb7 Ne6 33.Rb6 Rxb6 34.
axb6 Nc5 35.Na5 Nd7 36.b7 Nb8 37.c4 Kf7 38.c5 Ke6 39.c6 Kd6 40.Kf2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Tringov, Georgi"]
[Black "Benko, Pal"]
[Result "1/2-1/2"]
[ECO "D80"]
[EventDate "1964.05.20"]
[PlyCount "88"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 g6 6.cxd5 Nxd5 7.Nf3 Bg7 8.Bc4 
Nxc3 9.bxc3 O-O 10.Bf4 Nc6 11.O-O Na5 12.Bb3 Bg4 13.Re1 Qd7 14.h3 Bxf3 15.
Qxf3 Rac8 16.Be5 Bxe5 17.Rxe5 Nc4 18.Bxc4 Rxc4 19.Rae1 e6 20.h4 Rfc8 21.
R1e3 h5 22.Qf6 Qd8 23.Rxe6 Qxf6 24.Rxf6 R8c7 25.Rff3 b6 26.g3 Kg7 27.Kg2 
Ra4 28.Re2 Rac4 29.Ree3 Ra4 30.d5 Rd7 31.Rd3 Rxa2 32.d6 Re2 33.Rf4 Re6 34.
Rfd4 f6 35.Rc4 Kf7 36.Rc6 Re5 37.f4 Rc5 38.Rxc5 bxc5 39.Rd5 Ke6 40.Rxc5 
Rxd6 41.Rc7 a6 42.c4 Kf5 43.Kh3 Ke4 44.c5 Rd1 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.05.30"]
[Round "9"]
[White "Vranesic, Zvonko"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "E46"]
[EventDate "1964.05.20"]
[PlyCount "71"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Ne2 d5 6.a3 Be7 7.cxd5 exd5 8.Nf4 c6
9.Bd3 a5 10.O-O Na6 11.Kh1 Nc7 12.Bd2 Ne6 13.Nxe6 Bxe6 14.Rc1 Ne8 15.Qc2 
g6 16.f3 f5 17.Na4 Nd6 18.Nc5 Bf7 19.Rce1 Rc8 20.b3 b6 21.Na4 Nb5 22.Bc1 
Nxa3 23.Qe2 Bb4 24.Rd1 Rb8 25.e4 dxe4 26.fxe4 fxe4 27.Bxe4 Bxb3 28.Bxa3 
Bxa3 29.Bxg6 hxg6 30.Qd3 Rxf1+ 31.Rxf1 Bf7 32.Qxa3 Qxd4 33.Qg3 Re8 34.Qc7 
Qc4 35.Ra1 Qxa4 36.Rf1 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Benko, Pal"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "A13"]
[EventDate "1964.05.20"]
[PlyCount "145"]

1.c4 e6 2.g3 d5 3.Nf3 dxc4 4.Qa4+ Bd7 5.Qxc4 c5 6.Bg2 Nc6 7.O-O Nf6 8.Nc3 
Rc8 9.b3 Be7 10.Bb2 O-O 11.Ne4 b6 12.Rfd1 Nd5 13.Qc2 f5 14.Nc3 Nd4 15.Qb1 
Nb4 16.Ne1 Bc6 17.e3 Bxg2 18.Kxg2 Ndc6 19.a3 Nd5 20.Qd3 Bf6 21.Rab1 Nc7 
22.Qxd8 Rfxd8 23.Ba1 Be7 24.Kf1 Rd7 25.Ke2 Rcd8 26.d3 Kf7 27.Nc2 e5 28.h4 
Ne6 29.b4 Rc8 30.Rdc1 Rcd8 31.Rd1 Rc8 32.b5 Ncd4+ 33.Kd2 Nf3+ 34.Ke2 Nfd4+
35.Kd2 c4 36.exd4 exd4 37.dxc4 dxc3+ 38.Kxc3 Bf6+ 39.Kb4 Be7+ 40.Kb3 Rcd8 
41.Ne3 Rd2 42.Nd5 Nc5+ 43.Kb4 Ne4+ 44.Ka4 Rxf2 45.Nxe7 Rxd1 46.Rxd1 Nc5+ 
47.Kb4 Rf3 48.Rb1 Kxe7 49.Bxg7 Rxg3 50.Bd4 Nd3+ 51.Kc3 Ne1+ 52.Kb2 Nf3 53.
Be3 Rg2+ 54.Kb3 Nd2+ 55.Bxd2 Rxd2 56.Re1+ Kf6 57.Re8 Rd3+ 58.Kb4 f4 59.
Rf8+ Ke5 60.a4 f3 61.a5 bxa5+ 62.Kxa5 Kd4 63.Kb4 Ke3 64.c5 f2 65.c6 Rd4+ 
66.Ka5 Rd8 67.Rf7 Rd1 68.Re7+ Kf3 69.Rf7+ Kg2 70.Ka6 Ra1+ 71.Kb7 Rb1 72.
Kxa7 Rxb5 73.Rg7+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Berger, Bela"]
[Black "Tringov, Georgi"]
[Result "0-1"]
[ECO "A03"]
[EventDate "1964.05.20"]
[PlyCount "38"]

1.f4 c5 2.Nf3 Nc6 3.g3 d5 4.Bg2 g6 5.O-O Bg7 6.d3 Nf6 7.Nc3 O-O 8.Ne5 Nxe5
9.fxe5 Ng4 10.Nxd5 Bxe5 11.Bg5 f6 12.Bd2 Bxb2 13.Rb1 Be5 14.h3 e6 15.c4 
exd5 16.Bxd5+ Kg7 17.hxg4 Rb8 18.Kg2 Bxg4 19.Bxb7 Qd7 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Bilek, Istvan"]
[Black "Darga, Klaus"]
[Result "0-1"]
[ECO "B82"]
[EventDate "1964.05.20"]
[PlyCount "74"]

1.e4 c5 2.Nf3 e6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 d6 6.f4 Nf6 7.Be3 Be7 8.Qf3 
O-O 9.O-O-O Bd7 10.Nb3 a5 11.Nd2 d5 12.e5 Ne8 13.Nb3 a4 14.Nc5 b6 15.Nxd7 
Qxd7 16.Kb1 Nc7 17.Nb5 a3 18.Nxc7 Qxc7 19.b3 f6 20.Qh3 fxe5 21.c4 Kh8 22.
cxd5 exd5 23.Rxd5 Nb4 24.Bd3 Nxd3 25.Rxd3 exf4 26.Rc1 Qb7 27.Bd4 Bf6 28.
Bxf6 Rxf6 29.Qd7 Qxg2 30.Rc2 Qh1+ 31.Rd1 Qe4 32.Qd8+ Rf8 33.Qxb6 Rac8 34.
Qf2 f3 35.Rc1 h6 36.Ka1 Rxc2 37.Rxc2 Qxc2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Evans, Larry Melvyn"]
[Black "Rossetto, Hector Decio"]
[Result "0-1"]
[ECO "C43"]
[EventDate "1964.05.20"]
[PlyCount "90"]

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 d5 6.exd6 Nxd6 7.Bd3 Nc6 8.Qf4
Be6 9.Bd2 Qd7 10.O-O O-O-O 11.Nc3 h6 12.Qa4 Kb8 13.Be3 Qe8 14.Rad1 a6 15.
b4 Nc4 16.Bxc4 Bxc4 17.Rxd8+ Qxd8 18.Rd1 Qc8 19.b5 axb5 20.Nxb5 Bxb5 21.
Qxb5 Be7 22.Rb1 Rd8 23.g3 Bf6 24.Kg2 Nd4 25.Qa4 Qf5 26.Bxd4 Bxd4 27.Rb5 
Qd7 28.c4 Qc6 29.Qb3 Bc5 30.a4 g5 31.h3 h5 32.Kg1 f6 33.a5 g4 34.hxg4 hxg4
35.Ne1 Re8 36.Nd3 Rh8 37.Kf1 Rh1+ 38.Ke2 Qf3+ 39.Kd2 Bxf2 40.a6 b6 41.c5 
Be1+ 42.Nxe1 Qf2+ 43.Kd3 Qxg3+ 44.Kc4 Qf4+ 45.Kc3 Qe5+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Foguelman, Alberto"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[ECO "D25"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.Qb3 Bxf3 7.gxf3 c5 8.Qxb7
Nbd7 9.dxc5 Bxc5 10.f4 O-O 11.Qg2 Rc8 12.O-O Bxe3 13.fxe3 Rxc4 14.b3 Rc7 
15.Bb2 Qa8 16.Nc3 Qxg2+ 17.Kxg2 Ng4 18.Rfe1 f5 19.Rac1 Rfc8 20.h3 Ngf6 21.
Kf3 Ne4 22.Nxe4 fxe4+ 23.Ke2 Rc2+ 24.Kd1 Rxc1+ 25.Bxc1 Nc5 26.Re2 Nd3 27.
Rc2 Rxc2 28.Kxc2 e5 29.Bd2 Kf7 30.b4 Ke6 31.a4 Kd5 32.Kc3 exf4 33.exf4 Nf2
34.b5 e3 35.Bxe3 Nd1+ 36.Kd2 Nxe3 37.Kxe3 Kc4 38.h4 Kb4 39.h5 h6 40.Kd4 
Kxa4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Gligoric, Svetozar"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "C64"]
[EventDate "1964.05.20"]
[PlyCount "114"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 f5 5.d4 fxe4 6.dxc5 exf3 7.Qxf3 Qe7 8.
Qh5+ g6 9.Qe2 d6 10.O-O Nf6 11.Bg5 O-O 12.Nd2 d5 13.Bxc6 bxc6 14.Nf3 e4 
15.Nd4 Qxc5 16.f3 a5 17.Qf2 Qd6 18.fxe4 Nxe4 19.Qxf8+ Qxf8 20.Rxf8+ Kxf8 
21.Rf1+ Kg7 22.Bf4 Bd7 23.Bxc7 a4 24.a3 c5 25.Nf3 Bb5 26.Rd1 Bc4 27.Bf4 
Kf6 28.h4 Kf5 29.Bc1 Rb8 30.Re1 h6 31.Nh2 h5 32.Nf3 Rb7 33.Ng5 Nxg5 34.
hxg5 d4 35.cxd4 cxd4 36.Kf2 Rf7 37.Kg3 Rb7 38.Re8 Be6 39.Kf3 Bd5+ 40.Kf2 
Rc7 41.Bd2 Rc2 42.Ke2 Bc4+ 43.Kd1 Rxb2 44.Rf8+ Ke4 45.Rf4+ Kd5 46.Rf6 Bd3 
47.g3 Ra2 48.Bc1 Bf5 49.Rb6 Rg2 50.Bf4 Ke4 51.Bd6 d3 52.Rb4+ Kd5 53.Bf4 
Bg4+ 54.Kc1 Rc2+ 55.Kb1 Bf5 56.Rb5+ Ke4 57.Bd6 Kf3 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Lengyel, Levente"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "D34"]
[EventDate "1964.05.20"]
[PlyCount "77"]

1.c4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.d4 c5 7.cxd5 exd5 8.Nc3 
Nc6 9.Bf4 Be6 10.dxc5 Bxc5 11.Rc1 Bb6 12.Na4 d4 13.a3 Nd5 14.Bd2 Re8 15.b4
Bg4 16.Nc5 Qe7 17.Re1 Rad8 18.Qa4 Bc8 19.Qb3 h6 20.Qb2 Nf6 21.e3 dxe3 22.
Bxe3 Qd6 23.Bf4 Rxe1+ 24.Rxe1 Qf8 25.Na4 Nd5 26.Bc1 Bc7 27.b5 Nce7 28.Qe2 
Nf5 29.Bb2 Ba5 30.Rc1 Re8 31.Qd3 Nfe7 32.Nd4 Rd8 33.h4 Qe8 34.Qe2 a6 35.
Nc5 axb5 36.Nxb5 Nb6 37.Nb3 Bd7 38.Nd6 Bg4 39.Qxg4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Perez Perez, Francisco Jose"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "B40"]
[EventDate "1964.05.20"]
[PlyCount "134"]

1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 g6 5.d4 cxd4 6.Nxd4 Nf6 7.Bg2 Bg7 8.O-O O-O
9.Nxc6 bxc6 10.e5 Nd5 11.c4 Nb6 12.Qe2 Ba6 13.Na3 f6 14.b3 fxe5 15.Bb2 Qc7
16.Rfe1 d6 17.Rad1 Nd7 18.f4 Rae8 19.fxe5 Nxe5 20.Rd2 Nf7 21.Bxg7 Kxg7 22.
Qe3 Bc8 23.Qc3+ Kg8 24.Nc2 c5 25.Ne3 Ne5 26.Red1 Rd8 27.Rf1 Rxf1+ 28.Nxf1 
Rf8 29.Re2 Bb7 30.Nd2 Bxg2 31.Kxg2 Qb7+ 32.Ne4 Ng4 33.h3 Ne5 34.Qe3 Rf3 
35.Qg5 Nf7 36.Qd2 Rf5 37.Kh2 Qe7 38.g4 Re5 39.Qf4 Kg7 40.Rf2 Ng5 41.Nf6 h6
42.h4 Nf7 43.Qf3 h5 44.Qa8 Nd8 45.g5 Rf5 46.Rd2 Rxf6 47.gxf6+ Qxf6 48.
Qxa7+ Kh6 49.Rg2 Nf7 50.Qa8 Qxh4+ 51.Kg1 Qe1+ 52.Kh2 Kg7 53.a4 Ng5 54.a5 
d5 55.Rxg5 Qh4+ 56.Kg2 Qxg5+ 57.Kf2 Qf4+ 58.Kg2 h4 59.cxd5 Qg3+ 60.Kf1 
Qf3+ 61.Ke1 h3 62.Qd8 Qg3+ 63.Kd2 h2 64.Qe7+ Kh6 65.Qf8+ Kh5 66.Qf1 Qg5+ 
67.Kc3 Qe5+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Porath, Yosef"]
[Black "Stein, Leonid"]
[Result "0-1"]
[ECO "A43"]
[EventDate "1964.05.20"]
[PlyCount "44"]

1.d4 c5 2.d5 Nf6 3.Nc3 d6 4.e4 g6 5.Nf3 Bg7 6.Bf4 O-O 7.Qd2 Qa5 8.Bd3 Bg4 
9.Bh6 Bxh6 10.Qxh6 Bxf3 11.gxf3 Nbd7 12.h4 b5 13.h5 c4 14.hxg6 fxg6 15.Bf1
Ne5 16.Bh3 Nxf3+ 17.Kd1 Qb6 18.Ke2 b4 19.Be6+ Kh8 20.e5 Nh5 21.Ne4 Qd4 22.
Qe3 Nf4+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Portisch, Lajos"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "E51"]
[EventDate "1964.05.20"]
[PlyCount "75"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 Nc6 7.O-O a6 8.h3 h6 9.
a3 dxc4 10.Bxc4 Bd6 11.e4 e5 12.Be3 Re8 13.Re1 exd4 14.Bxd4 Nxd4 15.Qxd4 
Bf8 16.e5 Nh7 17.Qf4 Be6 18.Bxe6 fxe6 19.Rad1 Qe7 20.Qe4 c6 21.Nh4 Rad8 
22.Rxd8 Rxd8 23.Rd1 Rxd1+ 24.Nxd1 Qd7 25.Nc3 Bc5 26.Nf3 Nf8 27.Qg4 Be7 28.
Ne4 Qd3 29.Nfd2 b5 30.Qf3 Qd4 31.Qc3 Qxc3 32.Nxc3 Nd7 33.Nf3 c5 34.Kf1 Kf7
35.Ke2 c4 36.a4 b4 37.Ne4 Nb6 38.Nfd2 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Reshevsky, Samuel Herman"]
[Black "Larsen, Bent"]
[Result "1/2-1/2"]
[ECO "A11"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.c4 e6 5.O-O Nd7 6.cxd5 exd5 7.h3 Bxf3 8.Bxf3 
Bd6 9.d3 Ne7 10.Nc3 O-O 11.e4 Nb6 12.Qb3 Bc5 13.Rd1 a5 14.d4 Bd6 15.e5 Bc7
16.Ne2 a4 17.Qc2 f6 18.Nf4 fxe5 19.Ne6 Qd6 20.Nxf8 Rxf8 21.dxe5 Qxe5 22.
Qe2 Nc4 23.Rb1 Qf6 24.Bg4 Nf5 25.b3 axb3 26.axb3 Ncd6 27.Bf4 Bb6 28.Bxf5 
Nxf5 29.Kg2 Nh4+ 30.Kf1 Ng6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.01"]
[Round "10"]
[White "Vranesic, Zvonko"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.d4 e6 2.Nf3 c5 3.e4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Be2 b5 7.Be3 Bb7 8.a3 Nf6
9.Qd3 d6 10.O-O Nbd7 11.f3 Be7 12.Bf2 O-O 13.Qd2 Rfd8 14.Bg3 g6 15.Kh1 Nb6
16.Nb3 Nh5 17.Bf2 d5 18.Bxb6 Qxb6 19.exd5 Bxd5 20.Nxd5 Ng3+ 21.hxg3 Rxd5 
22.Nd4 Rxd4 23.Bd3 Rad8 24.f4 R8d5 25.g4 e5 26.Qf2 Bc5 27.b4 Rxb4 28.Qf3 
Rbd4 29.fxe5 Qe6 30.Rae1 Rxg4 31.g3 Rg5 32.Kg2 Rh5 33.g4 Rg5 34.Re4 Rdxe5 
35.Rf4 f5 36.Kh2 Bd6 37.Qa8+ Qe8 38.Qxa6 Re6 39.Qxb5 Qxb5 40.Bxb5 Re4 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Bronstein, David"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "D40"]
[EventDate "1964.05.20"]
[PlyCount "39"]

1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Bg5 Be7 5.e3 Nbd7 6.Nf3 O-O 7.Bd3 dxc4 8.Bxc4 
c5 9.O-O cxd4 10.exd4 Nb6 11.Bb3 Bd7 12.Ne5 Rc8 13.Qd3 Nbd5 14.Rfe1 Bc6 
15.Qh3 a6 16.Rad1 b5 17.Bc2 Qd6 18.Nxc6 Rxc6 19.Bxf6 Nxf6 20.Ne4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Darga, Klaus"]
[Black "Lengyel, Levente"]
[Result "0-1"]
[ECO "E20"]
[EventDate "1964.05.20"]
[PlyCount "82"]

1.Nf3 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 O-O 5.Bg2 d5 6.cxd5 exd5 7.d4 Re8 8.O-O 
c6 9.Bf4 Nbd7 10.a3 Bf8 11.Qb3 Nb6 12.Rad1 Nc4 13.Qc2 Nd6 14.Bxd6 Bxd6 15.
Nd2 g6 16.e4 dxe4 17.Ndxe4 Nxe4 18.Bxe4 Bh3 19.Bg2 Bxg2 20.Kxg2 Qb6 21.Ne4
Be7 22.Rd3 Qa5 23.Nc5 b6 24.Ne4 Qd5 25.f3 f5 26.Nc3 Qc4 27.Rf2 Rad8 28.Qd1
Bf6 29.Rfd2 Rd6 30.Ne2 Bg5 31.Rc2 Qe6 32.h4 Bf6 33.Nf4 Qe1 34.Qxe1 Rxe1 
35.Kf2 Rb1 36.Ne2 c5 37.Ke3 cxd4+ 38.Nxd4 Re1+ 39.Ne2 f4+ 40.gxf4 Re6+ 41.
Kf2 R6xe2+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Ivkov, Borislav"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[ECO "B48"]
[EventDate "1964.05.20"]
[PlyCount "56"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Bd3 Nc6 7.Be3 Nf6 8.O-O 
Ne5 9.h3 b5 10.f4 Nc4 11.Bxc4 Qxc4 12.e5 b4 13.Qf3 Rb8 14.exf6 bxc3 15.b3 
Qc7 16.f5 Bb7 17.Bf4 e5 18.Bxe5 d6 19.Qg4 dxe5 20.fxg7 Rg8 21.gxf8=Q+ Rxf8
22.Nf3 f6 23.Rad1 Kf7 24.Qh5+ Kg7 25.Qg4+ Kf7 26.Qh5+ Kg7 27.Qg4+ Kf7 28.
Qh5+ Kg7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Larsen, Bent"]
[Black "Evans, Larry Melvyn"]
[Result "1/2-1/2"]
[ECO "B23"]
[EventDate "1964.05.20"]
[PlyCount "83"]

1.e4 c5 2.f4 Nc6 3.Nf3 g6 4.Bb5 Bg7 5.O-O Nf6 6.Bxc6 bxc6 7.Qe2 O-O 8.d3 
d6 9.Nc3 Rb8 10.Rb1 Ne8 11.Na4 Nc7 12.b3 f6 13.Qf2 e5 14.Qh4 exf4 15.Qxf4 
f5 16.Qg3 Ne6 17.exf5 Rxf5 18.Rf2 Rb7 19.Bb2 Rbf7 20.Bxg7 Kxg7 21.Nc3 d5 
22.Rbf1 Qf6 23.Ne5 Rxf2 24.Rxf2 Qxf2+ 25.Qxf2 Rxf2 26.Kxf2 Nd4 27.Na4 Kf6 
28.Nf3 Nxc2 29.Nxc5 Ke7 30.Ne1 Nxe1 31.Kxe1 d4 32.Kf2 Kd6 33.b4 Kd5 34.Kf3
a5 35.a3 axb4 36.axb4 Ke5 37.g4 g5 38.Kg3 Be6 39.h4 gxh4+ 40.Kxh4 Bf7 41.
Kg5 Bg6 42.Nd7+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Pachman, Ludek"]
[Black "Foguelman, Alberto"]
[Result "1-0"]
[ECO "E32"]
[EventDate "1964.05.20"]
[PlyCount "77"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.Qc2 Nc6 7.Bg5 d6 8.e3 
e5 9.h3 Re8 10.Nf3 b6 11.Be2 Na5 12.O-O Bb7 13.Nd2 Qe7 14.Rae1 h6 15.Bh4 
g5 16.Bg3 e4 17.Kh2 Kg7 18.f4 exf3 19.gxf3 Nh5 20.Bf2 Rg8 21.Ne4 Qe6 22.d5
Qe7 23.f4 Rae8 24.Nd2 Nf6 25.fxg5 hxg5 26.e4 c5 27.e5 dxe5 28.Qf5 Nh7 29.
Bd3 Rh8 30.Bg3 Bc8 31.Bxe5+ Qxe5+ 32.Qxe5+ Rxe5 33.Rxe5 Nb7 34.Ne4 f5 35.
Re7+ Kg6 36.Rc7 fxe4 37.Bxe4+ Kh6 38.Bxh7 Nd6 39.Rf6+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Quinones Carillo, Oscar"]
[Black "Reshevsky, Samuel Herman"]
[Result "0-1"]
[ECO "C95"]
[EventDate "1964.05.20"]
[PlyCount "86"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Nb8 10.d4 Nbd7 11.c4 c6 12.c5 Qc7 13.cxd6 Bxd6 14.a4 exd4 15.Nxd4 Nc5
16.axb5 Rd8 17.Be3 Be5 18.Ba2 Qd6 19.Re2 Ncxe4 20.Nd2 Bxd4 21.Nxe4 Nxe4 
22.Bxd4 Qxd4 23.Qxd4 Rxd4 24.Rae1 axb5 25.Rxe4 Rxe4 26.Rxe4 Kf8 27.Bb3 c5 
28.Bd5 Ra6 29.Rf4 f6 30.Re4 Rd6 31.Ba8 Ra6 32.Bd5 Rd6 33.Ba8 Bf5 34.Re1 c4
35.g4 Bg6 36.Re3 b4 37.Be4 Re6 38.f3 Bxe4 39.fxe4 Ke7 40.Kf2 Kd6 41.Re1 
Ke5 42.Rc1 Rc6 43.Ke3 c3 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Rossetto, Hector Decio"]
[Black "Vranesic, Zvonko"]
[Result "1-0"]
[ECO "E08"]
[EventDate "1964.05.20"]
[PlyCount "167"]

1.d4 d5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O 6.c4 c6 7.Nc3 Nbd7 8.b3 b6 
9.Bb2 Bb7 10.Rc1 Rc8 11.Qc2 Qc7 12.Qb1 Qb8 13.Nd2 Rfd8 14.e4 dxe4 15.Ndxe4
Nxe4 16.Qxe4 Nf6 17.Qe2 Rxd4 18.Ne4 Rd7 19.Nxf6+ Bxf6 20.Bxf6 gxf6 21.Qg4+
Kh8 22.Rfe1 c5 23.Qh4 Kg7 24.Bxb7 Qxb7 25.Re4 Rcd8 26.Rce1 Rd1 27.Qg4+ Kf8
28.Rxe6 fxe6 29.Rxd1 Rxd1+ 30.Qxd1 Qe4 31.h4 Ke7 32.Qd2 a5 33.Kh2 a4 34.
bxa4 Qxc4 35.Qh6 Qd4 36.Qxh7+ Kd6 37.Qc2 f5 38.h5 Ke7 39.Kg1 Kf6 40.Qc1 
Qg4 41.a5 bxa5 42.Qxc5 Qxh5 43.Qxa5 Qd1+ 44.Kg2 e5 45.Qb6+ Ke7 46.Qc7+ Ke6
47.Qc6+ Ke7 48.Qf3 Qd7 49.a3 e4 50.Qc3 Qd5 51.Kh2 Ke6 52.a4 Qa2 53.Qd4 Kf7
54.Kh3 Kg6 55.Qb6+ Kh5 56.Qa7 Qa1 57.Kg2 Qa2 58.Qh7+ Kg5 59.Qg7+ Kh5 60.
Qf6 Qd5 61.Kh2 Qc5 62.Qb2 Kg6 63.Qd2 Qa3 64.a5 Qd3 65.Qb2 Qf1 66.Qa2 Qa6 
67.Kg1 Qd3 68.Qa4 Qa6 69.Qa3 Kh5 70.Qc5 Qf6 71.Kg2 Kg5 72.Qb6 Qa1 73.a6 
Qd1 74.Qe3+ Kg6 75.a7 Qd5 76.Kh2 Qa2 77.Qb6+ Kh5 78.Qc5 Kg6 79.Kg2 Qa6 80.
Qe7 Qc6 81.Kh2 Qb6 82.Kg1 Qb1+ 83.Kg2 Qd3 84.Qe8+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Smyslov, Vassily"]
[Black "Gligoric, Svetozar"]
[Result "1-0"]
[ECO "C00"]
[EventDate "1964.05.20"]
[PlyCount "131"]

1.e4 c5 2.Nf3 e6 3.Qe2 Nc6 4.g3 Nf6 5.Bg2 d5 6.d3 Be7 7.O-O O-O 8.e5 Nd7 
9.c4 d4 10.h4 Re8 11.Re1 Nf8 12.Nbd2 Bd7 13.h5 h6 14.Nh2 Nh7 15.Ng4 f5 16.
exf6 Nxf6 17.Nxf6+ Bxf6 18.Ne4 Be7 19.f4 e5 20.Rf1 exf4 21.Bxf4 Bf8 22.
Rae1 Kh8 23.Qd2 Re6 24.Re2 Qe8 25.Ref2 Be7 26.Bh3 Rxe4 27.Bxd7 Qxd7 28.
dxe4 Qe6 29.e5 Kg8 30.Qd3 Bf8 31.b3 Re8 32.Qe4 Rd8 33.Kg2 a6 34.a4 Be7 35.
Qg6 Qxg6 36.hxg6 Re8 37.g4 Bh4 38.Bg3 Bxg3 39.Kxg3 Ne7 40.Rf7 b6 41.e6 
Nxg6 42.Rb7 Rxe6 43.Rff7 a5 44.Rxg7+ Kf8 45.Rh7 Kg8 46.Rhc7 Nf8 47.Rg7+ 
Kh8 48.Rge7 Rd6 49.Rb8 Kg8 50.Ree8 Rf6 51.Re2 Kg7 52.Rb7+ Rf7 53.Ree7 Rxe7
54.Rxe7+ Kf6 55.Rb7 Ke5 56.Kf3 Ne6 57.Rxb6 Ng5+ 58.Ke2 Ke4 59.Rxh6 d3+ 60.
Kd2 Nf3+ 61.Kc3 d2 62.Kc2 Ke3 63.Kd1 Ng5 64.Rh5 Ne4 65.Re5 Kd3 66.Rxe4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Spassky, Boris"]
[Black "Porath, Yosef"]
[Result "1-0"]
[ECO "E31"]
[EventDate "1964.05.20"]
[PlyCount "63"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 exd5 7.cxd5 d6 8.e3 Nbd7
9.Bb5 g5 10.Bg3 Qa5 11.Bxd7+ Bxd7 12.Ne2 Bb5 13.a3 Bxc3+ 14.Nxc3 Bc4 15.
Qf3 Ke7 16.Bxd6+ Kxd6 17.Qxf6+ Kc7 18.Qxf7+ Kb8 19.Qf6 Rd8 20.Qe5+ Qc7 21.
Qxc7+ Kxc7 22.e4 b5 23.Kd2 Rd7 24.b3 Bxb3 25.Nxb5+ Kb6 26.Rhb1 Kxb5 27.
Rxb3+ Kc4 28.Rd3 Rf7 29.f3 g4 30.Rc1+ Kb5 31.Rb1+ Kc4 32.Rbb3 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Stein, Leonid"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "C19"]
[EventDate "1964.05.20"]
[PlyCount "38"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Nf3 Qa5 8.Bd2 
Nbc6 9.Be2 Qa4 10.Rb1 cxd4 11.Bb5 Qxa3 12.cxd4 O-O 13.Rb3 Qa2 14.Qc1 a6 
15.Bd3 Nf5 16.Ra3 Qxa3 17.Qxa3 Nfxd4 18.Nxd4 Nxd4 19.Bxh7+ Kxh7 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Tal, Mikhail"]
[Black "Benko, Pal"]
[Result "1-0"]
[ECO "B17"]
[EventDate "1964.05.20"]
[PlyCount "41"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6 8.Bb3 
h6 9.N5f3 Be7 10.Nh3 c5 11.Be3 Nbd5 12.O-O-O Nxe3 13.fxe3 Qc7 14.Ne5 a6 
15.g4 Bd6 16.g5 hxg5 17.Nxg5 Bxe5 18.dxe5 Qxe5 19.Rd8+ Ke7 20.Rxh8 Qxg5 
21.Qd2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.02"]
[Round "11"]
[White "Tringov, Georgi"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[ECO "B45"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Ndb5 Bc5 7.Bf4 O-O 8.Bc7
Qe7 9.Bd6 Bxd6 10.Qxd6 Ne8 11.Qxe7 Nxe7 12.O-O-O f5 13.f3 a6 14.Nd6 Nxd6 
15.Rxd6 b5 16.Bd3 g6 17.Re1 Kf7 18.exf5 Nxf5 19.Bxf5 gxf5 20.Rd4 Rb8 21.b4
Ke7 22.Rh4 Rf7 23.Nd5+ Kd8 24.Nf4 Bb7 25.Nd3 Bd5 26.Kb2 Rg7 27.Re2 Bc4 28.
Rd2 Bxd3 29.Rxd3 Rb6 30.g3 Rc6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Benko, Pal"]
[Black "Stein, Leonid"]
[Result "0-1"]
[ECO "A07"]
[EventDate "1964.05.20"]
[PlyCount "124"]

1.g3 d5 2.Nf3 Nf6 3.Bg2 c6 4.O-O Bf5 5.d3 Nbd7 6.Nbd2 e6 7.Qe1 Be7 8.e4 
dxe4 9.dxe4 Bg4 10.Nc4 Bxf3 11.Bxf3 Qc7 12.Qc3 e5 13.b4 O-O 14.Bb2 Rfe8 
15.Rad1 Bf8 16.Rd2 Nb6 17.Rfd1 Na4 18.Qb3 Nxb2 19.Qxb2 b5 20.Ne3 a5 21.a3 
axb4 22.axb4 h5 23.Qb3 Red8 24.Rxd8 Rxd8 25.Rxd8 Qxd8 26.Qc3 Qd6 27.Nf5 
Qe6 28.h4 g6 29.Ne3 Qd6 30.Kf1 Be7 31.Ke2 Bf8 32.Qa1 Bh6 33.c3 Qe6 34.Qd1 
Kg7 35.Qd3 Ne8 36.Bg2 Nd6 37.Bh3 Qa2+ 38.Qc2 Nxe4 39.Qxa2 Nxc3+ 40.Kf1 
Nxa2 41.Nc2 f5 42.Bg2 e4 43.f3 Nc3 44.Nd4 Be3 45.Nxc6 Kf6 46.fxe4 Nxe4 47.
Ke2 Bb6 48.Kd3 Nxg3 49.Nb8 Ke7 50.Bc6 f4 51.Nd7 Ba7 52.Nc5 Nf5 53.Bxb5 
Nxh4 54.Ke4 Bb8 55.Nd7 Bc7 56.Nc5 g5 57.Nd3 f3 58.Bc6 g4 59.Ke3 Bb6+ 60.
Kf4 Kf6 61.Bb5 Bc7+ 62.Ke3 g3 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Berger, Bela"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "A49"]
[EventDate "1964.05.20"]
[PlyCount "54"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.d4 c5 5.d5 b5 6.d6 Bb7 7.O-O O-O 8.Nc3 exd6 
9.Nxb5 d5 10.Bf4 a6 11.Nd6 Bc6 12.c4 Qe7 13.Qd2 d4 14.e3 Bxf3 15.Bxf3 Nc6 
16.Rfe1 Rab8 17.Bxc6 dxc6 18.exd4 Qa7 19.d5 cxd5 20.cxd5 Rfd8 21.Be5 Rb6 
22.Bxf6 Bxf6 23.Nc4 Rb4 24.Rac1 Qb7 25.d6 Bxb2 26.Re7 Bxc1 27.Qe2 Qd5 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Bilek, Istvan"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "A07"]
[EventDate "1964.05.20"]
[PlyCount "86"]

1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.h3 Bxf3 5.exf3 e6 6.f4 Bd6 7.O-O Nd7 8.d3 h5 
9.Re1 Qf6 10.c4 Ne7 11.Nc3 h4 12.cxd5 cxd5 13.Qa4 hxg3 14.fxg3 Bc5+ 15.Be3
Bxe3+ 16.Rxe3 Rd8 17.Nxd5 Nxd5 18.Bxd5 Qxb2 19.Rae1 O-O 20.Bg2 a6 21.R1e2 
Qb1+ 22.Re1 Qb2 23.R1e2 Qc1+ 24.Re1 Qc7 25.Qb4 b6 26.d4 Nf6 27.Rc3 Qd6 28.
Rb1 Qxd4+ 29.Qxd4 Rxd4 30.Rxb6 Rd1+ 31.Kh2 Rd2 32.Rcb3 Rxa2 33.g4 Nd5 34.
Rb2 Rxb2 35.Rxb2 Nxf4 36.Be4 g5 37.Ra2 Rb8 38.Ra5 Rb2+ 39.Kg3 Ne2+ 40.Kf3 
Ng1+ 41.Ke3 Nxh3 42.Rxa6 Rb3+ 43.Kd4 Nf2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Evans, Larry Melvyn"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "E65"]
[EventDate "1964.05.20"]
[PlyCount "61"]

1.c4 Nf6 2.g3 g6 3.Bg2 Bg7 4.Nc3 O-O 5.d4 d6 6.Nf3 c5 7.O-O Nc6 8.dxc5 
dxc5 9.Be3 Be6 10.Bxc5 Bxc4 11.Qa4 Ba6 12.Rfd1 Qc8 13.Rac1 Rd8 14.Nd4 Nxd4
15.Bxd4 Qd7 16.Bxa7 Qxa4 17.Rxd8+ Rxd8 18.Nxa4 Bxe2 19.Bxb7 Rd7 20.Rc8+ 
Bf8 21.Nc5 Rd1+ 22.Kg2 Ng4 23.Ba6 Bxa6 24.Nxa6 Rd2 25.h3 Rd7 26.Bc5 Ne5 
27.b4 Nd3 28.b5 f5 29.b6 Rb7 30.a4 Kf7 31.a5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Gligoric, Svetozar"]
[Black "Pachman, Ludek"]
[Result "1-0"]
[ECO "C12"]
[EventDate "1964.05.20"]
[PlyCount "84"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3 Ne4 8.Qg4 g6
9.Bc1 c5 10.Bd3 Nxc3 11.dxc5 Qa5 12.Bd2 Qa4 13.h3 Qxg4 14.hxg4 Ne4 15.Bxe4
dxe4 16.Ne2 Nd7 17.Ng3 Nxc5 18.g5 h5 19.Bb4 Na6 20.Bd6 Bd7 21.Nxe4 Bc6 22.
Nf6+ Kd8 23.f3 Kc8 24.Rh4 b6 25.Rf4 Kb7 26.Ne4 Rh7 27.Nf6 Rhh8 28.O-O-O 
Rad8 29.Rh1 Nc7 30.Rf1 Nb5 31.Ne4 Rd7 32.Kb2 Rc8 33.Nf6 Rdd8 34.Rd1 Nc7 
35.Rd3 Ne8 36.Nh7 Nxd6 37.exd6 Rd7 38.Nf6 Rdd8 39.d7 Rc7 40.Rfd4 Bb5 41.
Rd2 Rc5 42.Ne4 Rd5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Ivkov, Borislav"]
[Black "Rossetto, Hector Decio"]
[Result "1/2-1/2"]
[ECO "C87"]
[EventDate "1964.05.20"]
[PlyCount "63"]

1.e4 Nc6 2.Nf3 e5 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 6.c3 Bd7 7.d4 Be7 8.Re1 O-O 
9.a3 b5 10.Bc2 Bg4 11.d5 Na5 12.Nbd2 c5 13.b4 Nb7 14.h3 Bd7 15.Nf1 Qc7 16.
Bd2 Rfc8 17.Ne3 a5 18.Kh2 Ra7 19.Rc1 axb4 20.axb4 c4 21.g4 g6 22.Rg1 Kh8 
23.Ng5 Nd8 24.h4 Ng8 25.Qf3 f6 26.Nh3 Nf7 27.Ra1 Rca8 28.Qh1 Ra2 29.Rxa2 
Rxa2 30.Ra1 Qa7 31.Rxa2 Qxa2 32.Qb1 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Lengyel, Levente"]
[Black "Tringov, Georgi"]
[Result "1-0"]
[ECO "E68"]
[EventDate "1964.05.20"]
[PlyCount "134"]

1.Nf3 g6 2.d4 d6 3.c4 Bg7 4.Nc3 Nf6 5.g3 O-O 6.Bg2 Nbd7 7.O-O e5 8.e4 c6 
9.h3 exd4 10.Nxd4 Re8 11.Re1 a5 12.Bf4 Ne5 13.b3 Nfd7 14.Be3 Nc5 15.Re2 
Qe7 16.f4 Ned7 17.Qc2 Nf6 18.Bf2 Qc7 19.Rd1 Bd7 20.Red2 Rad8 21.Nde2 Bc8 
22.a3 a4 23.bxa4 Bxh3 24.Bxh3 Ncxe4 25.Nxe4 Nxe4 26.Rd3 Nxf2 27.Kxf2 Re7 
28.Ng1 Qb6+ 29.c5 Qa7 30.Rxd6 Rxd6 31.Rxd6 Re8 32.Rd7 Bf8 33.Qc4 Qxc5+ 34.
Qxc5 Bxc5+ 35.Kf1 Re3 36.Ne2 Rxa3 37.Rxb7 Rxa4 38.Rc7 Ra6 39.Bd7 Bd6 40.
Rc8+ Kg7 41.Bxc6 h5 42.Nc3 h4 43.Ne4 Be7 44.Bd5 hxg3 45.Rc7 Kf8 46.Rc8+ 
Kg7 47.Rc7 Kf8 48.Kg2 Ra5 49.Rd7 Ke8 50.Bc6 Kf8 51.Bd5 Ke8 52.Bc6 Kf8 53.
Nxg3 Rc5 54.Bf3 f5 55.Ne2 Ke8 56.Rb7 Rc2 57.Kf1 Rd2 58.Nc3 Kf8 59.Nd5 Bh4 
60.Bg2 g5 61.Rh7 Rd1+ 62.Ke2 Re1+ 63.Kd3 Rd1+ 64.Ke2 Re1+ 65.Kd3 Rd1+ 66.
Kc4 Rc1+ 67.Kb5 Rg1 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Perez Perez, Francisco Jose"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "C84"]
[EventDate "1964.05.20"]
[PlyCount "38"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4 exd4 6.O-O Be7 7.Re1 b5 8.e5 
Nxe5 9.Rxe5 d6 10.Rg5 bxa4 11.Nxd4 O-O 12.Nc3 Bd7 13.Nf5 Bxf5 14.Rxf5 a3 
15.b3 Qd7 16.Qf3 Rae8 17.Bxa3 d5 18.Nxd5 Bxa3 19.Rxf6 Bb2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Porath, Yosef"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "A06"]
[EventDate "1964.05.20"]
[PlyCount "112"]

1.Nf3 d5 2.b3 Bg4 3.Bb2 Nd7 4.e3 Ngf6 5.Be2 e6 6.Ne5 Bxe2 7.Qxe2 Nxe5 8.
Bxe5 Nd7 9.Bb2 Be7 10.c4 O-O 11.cxd5 exd5 12.O-O Re8 13.d3 Bd6 14.Nd2 a5 
15.a4 Ra6 16.g3 Bb4 17.Rfc1 Rae6 18.Nf3 c6 19.Bc3 Bxc3 20.Rxc3 Qf6 21.d4 
Qh6 22.Rc2 Nf6 23.Ne5 Ne4 24.Nd3 Rf6 25.Qg4 Ng5 26.Nf4 Ne6 27.Nxe6 Rfxe6 
28.Rac1 Qf6 29.Kg2 Qe7 30.Rc5 Rg6 31.Qe2 Qd8 32.h3 Rh6 33.R5c3 Re4 34.f3 
Re8 35.Qf2 Rhe6 36.Qd2 h5 37.h4 Qe7 38.Kf2 Qd6 39.Rd3 Rg6 40.Rg1 b6 41.Qd1
Qe6 42.Re1 Qh3 43.Rg1 Re4 44.f4 Qf5 45.Rc3 Rge6 46.g4 Qf6 47.g5 Qe7 48.Rg3
g6 49.Qc2 c5 50.dxc5 d4 51.Rc4 bxc5 52.Rf3 Rxe3 53.Rxe3 dxe3+ 54.Ke2 Qb7 
55.Rxc5 Qg2+ 56.Kd3 e2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Portisch, Lajos"]
[Black "Foguelman, Alberto"]
[Result "1-0"]
[ECO "E91"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.d4 Nf6 2.c4 g6 3.Nc3 c5 4.d5 d6 5.e4 Bg7 6.Nf3 O-O 7.Bg5 Na6 8.Be2 Nc7 
9.Qd2 a6 10.a4 Rb8 11.O-O Bg4 12.Rfe1 e5 13.a5 Bd7 14.Bd1 b5 15.axb6 Rxb6 
16.Na4 Rb4 17.Qc1 Qb8 18.Nxc5 dxc5 19.Nxe5 Re8 20.Bxf6 Rxe5 21.Bxg7 Kxg7 
22.Qc3 f6 23.f4 Re8 24.b3 Qd8 25.Bc2 a5 26.e5 Na6 27.Re3 Kg8 28.Rae1 Rb7 
29.exf6 Rxe3 30.Rxe3 Bc8 31.f5 gxf5 32.Rg3+ Kf8 33.f7 Rxf7 34.Qh8+ Ke7 35.
Rg8 Qxg8 36.Qxg8 Bd7 37.Bd1 Rf8 38.Qg5+ Kd6 39.Qh6+ Ke7 40.d6+ Kf7 41.
Qxh7+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Reshevsky, Samuel Herman"]
[Black "Darga, Klaus"]
[Result "1/2-1/2"]
[ECO "E06"]
[EventDate "1964.05.20"]
[PlyCount "62"]

1.d4 d5 2.c4 e6 3.cxd5 exd5 4.Nc3 c6 5.Nf3 Be7 6.g3 Nf6 7.Bg2 O-O 8.O-O 
Re8 9.Re1 Nbd7 10.a3 a5 11.Bf4 Bf8 12.Qc2 g6 13.e4 Nxe4 14.Nxe4 dxe4 15.
Rxe4 Rxe4 16.Qxe4 Nf6 17.Qc2 Be6 18.Ng5 Bd5 19.Qd3 Bg7 20.Rd1 Bxg2 21.Kxg2
Qd5+ 22.Qf3 Qxf3+ 23.Nxf3 Nd5 24.Bd2 a4 25.Rc1 f6 26.Kf1 Kf7 27.Ke2 Bf8 
28.Kd3 Re8 29.Rc4 Nb6 30.Rc1 Nd5 31.Rc4 Nb6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.03"]
[Round "12"]
[White "Vranesic, Zvonko"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "A53"]
[EventDate "1964.05.20"]
[PlyCount "64"]

1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 4.g3 e5 5.Nf3 Nbd7 6.Bg2 c6 7.O-O h6 8.dxe5 
dxe5 9.b3 Bb4 10.Bb2 O-O 11.Re1 Qb6 12.Nh4 Bh7 13.e4 Nc5 14.Qc2 Ne6 15.Nf3
Rfe8 16.Na4 Qa5 17.Re2 b5 18.a3 Bd6 19.Bc3 Qa6 20.Nb2 b4 21.Be1 bxa3 22.
Na4 Rab8 23.Bc3 Nxe4 24.Rxe4 Bxe4 25.Qxe4 Rxb3 26.c5 Nxc5 27.Nxc5 Bxc5 28.
Bxe5 Qd3 29.Qxc6 Rxe5 30.Nxe5 Bxf2+ 31.Kxf2 Qd4+ 32.Ke2 Rb2+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Bronstein, David"]
[Black "Lengyel, Levente"]
[Result "1/2-1/2"]
[ECO "A07"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.e4 e5 2.Nf3 Nc6 3.g3 Nf6 4.d3 d5 5.Nbd2 Be7 6.Bg2 dxe4 7.dxe4 O-O 8.O-O 
b6 9.Re1 Bb7 10.b3 Bc5 11.Bb2 Ng4 12.Rf1 Ba6 13.c4 f6 14.a3 Bc8 15.h3 Nh6 
16.b4 Bd4 17.Qc2 Bxb2 18.Qxb2 Be6 19.c5 Qd7 20.b5 Na5 21.c6 Qc8 22.h4 Rd8 
23.Rfd1 a6 24.a4 Rd6 25.Bf1 axb5 26.axb5 Qf8 27.Be2 Rad8 28.Qc3 Qf7 29.Nh2
Qe7 30.Qc2 Nf7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Darga, Klaus"]
[Black "Evans, Larry Melvyn"]
[Result "1-0"]
[ECO "A35"]
[EventDate "1964.05.20"]
[PlyCount "63"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 Nc6 4.e3 g6 5.d4 Bg7 6.d5 Na5 7.e4 d6 8.Bd3 O-O 9.
O-O e5 10.Ne1 Ne8 11.f4 f5 12.Qc2 exf4 13.Bxf4 Bd4+ 14.Kh1 Bxc3 15.Qxc3 
fxe4 16.Be2 Qf6 17.Qd2 b6 18.Nc2 Qxb2 19.Rab1 e3 20.Qxe3 Qxc2 21.Bh6 Bf5 
22.Bd3 Qxb1 23.Bxb1 Ng7 24.Bxg7 Kxg7 25.Bxf5 gxf5 26.Qg3+ Kh8 27.Qc3+ Kg8 
28.Re1 Rae8 29.Re6 Rxe6 30.dxe6 Nc6 31.Qg3+ Kh8 32.Qxd6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Foguelman, Alberto"]
[Black "Gligoric, Svetozar"]
[Result "1/2-1/2"]
[ECO "E62"]
[EventDate "1964.05.20"]
[PlyCount "125"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nc6 7.Nc3 e5 8.dxe5 
dxe5 9.Bg5 Be6 10.Qa4 h6 11.Rad1 Nd4 12.Bc1 Nd7 13.b3 Re8 14.Nxd4 exd4 15.
Nb5 Bg4 16.f3 Bf5 17.Nxd4 Nc5 18.Nxf5 Nxa4 19.Rxd8 Raxd8 20.Nxg7 Kxg7 21.
bxa4 Rxe2 22.a3 c6 23.f4 Rd4 24.Bf3 Ra2 25.Rf2 Rxf2 26.Kxf2 Rxc4 27.Bb2+ 
f6 28.Bd1 Re4 29.Bc3 g5 30.fxg5 hxg5 31.h3 b6 32.Bb3 a5 33.Kf3 Re8 34.h4 
gxh4 35.gxh4 Rd8 36.Ke4 Kg6 37.Be6 Rh8 38.Be1 Rh5 39.Bg3 Rc5 40.Bd6 Rc1 
41.Bg3 Rc3 42.Bd6 Rc1 43.Bd7 Re1+ 44.Kf3 Rf1+ 45.Ke2 Rc1 46.Be8+ Kg7 47.h5
Rc4 48.Kd3 Rxa4 49.Bxc6 Rh4 50.Be8 Rh1 51.Ke2 Rh4 52.Kd3 Rh1 53.Kc4 Ra1 
54.Bc6 Kh6 55.Kb5 Rb1+ 56.Ka6 Kxh5 57.Bc7 f5 58.a4 Kg4 59.Bd7 Rd1 60.Bb5 
Ra1 61.Kxb6 f4 62.Bd7+ Kg5 63.Kxa5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Larsen, Bent"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "B42"]
[EventDate "1964.05.20"]
[PlyCount "146"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Bc5 6.Nb3 Ba7 7.O-O Nc6 8.N1d2 
Nf6 9.Nc4 d5 10.exd5 exd5 11.Qe2+ Be6 12.Ne5 Nxe5 13.Qxe5 O-O 14.Nd4 Qd7 
15.Bh6 Bxd4 16.Qxd4 Bf5 17.Rae1 Rfe8 18.Bg5 Bxd3 19.cxd3 Rxe1 20.Rxe1 Re8 
21.Rxe8+ Nxe8 22.h3 Nc7 23.Bd2 Ne6 24.Qb6 h6 25.Kh2 h5 26.g3 d4 27.Qb3 Qc6
28.Qd1 Qd5 29.a4 Qf5 30.Qe2 Nc5 31.g4 hxg4 32.hxg4 Qg6 33.Qe7 Ne6 34.Bc1 
Qxg4 35.Qxb7 Qh5+ 36.Kg2 Qg6+ 37.Kh2 Qh5+ 38.Kg2 Qg6+ 39.Kh2 Qxd3 40.Qc8+ 
Kh7 41.b4 Qe2 42.Kg3 Qd1 43.b5 axb5 44.a5 d3 45.a6 d2 46.Bxd2 Qxd2 47.a7 
Qd6+ 48.Kg2 Nc7 49.Qh3+ Qh6 50.Qd7 Qf4 51.Qh3+ Kg6 52.Qd3+ f5 53.Qd7 b4 
54.Qxc7 Qxc7 55.a8=Q Qb6 56.Qe8+ Kh7 57.Kf1 Qa6+ 58.Ke1 Qa1+ 59.Ke2 Qb2+ 
60.Kf3 Qc3+ 61.Kg2 Kh6 62.f4 Qc2+ 63.Kg3 Qe4 64.Qb8 Qe3+ 65.Kh4 Qf2+ 66.
Kh3 Qe3+ 67.Kh4 Qe1+ 68.Kh3 Kh7 69.Qb6 Qc3+ 70.Kh2 b3 71.Qe6 Qc2+ 72.Kg3 
b2 73.Qe8 Qe4 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Pachman, Ludek"]
[Black "Porath, Yosef"]
[Result "1-0"]
[ECO "D42"]
[EventDate "1964.05.20"]
[PlyCount "75"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3 Be7 8.O-O 
O-O 9.Re1 b6 10.Nxd5 Qxd5 11.e4 Qh5 12.d5 Nd4 13.Nxd4 Qxd1 14.Rxd1 cxd4 
15.Bf4 exd5 16.exd5 Rd8 17.Be4 f5 18.Bf3 Bd6 19.Rxd4 Bb7 20.Bxd6 Rxd6 21.
Rc1 Rad8 22.h4 Kf7 23.Rc7+ R8d7 24.Rxd7+ Rxd7 25.Kh2 Kf6 26.Kg3 g6 27.d6 
Ke5 28.Rd2 Bxf3 29.Kxf3 h6 30.h5 g5 31.g4 f4 32.Re2+ Kf6 33.Re7 Rxd6 34.
Rxa7 Ke5 35.Re7+ Kf6 36.Rh7 Ke5 37.a4 Rd3+ 38.Kg2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Quinones Carillo, Oscar"]
[Black "Vranesic, Zvonko"]
[Result "1-0"]
[ECO "B93"]
[EventDate "1964.05.20"]
[PlyCount "77"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 Qc7 7.Bd3 e5 8.Nf3 
Nbd7 9.a4 b6 10.O-O Bb7 11.Qe1 Be7 12.Kh1 O-O 13.fxe5 Nxe5 14.Qg3 Kh8 15.
Nd4 g6 16.Bh6 Rfe8 17.Nf5 Nh5 18.Qh3 Bf8 19.Bxf8 Rxf8 20.Ne3 Qd8 21.Ned5 
Bc8 22.Qe3 Rb8 23.Be2 Bg4 24.Bxa6 f5 25.Rf2 Rf7 26.Raf1 Qh4 27.Kg1 Ng7 28.
Bd3 Rbf8 29.Nb5 Ne6 30.Nxd6 Rd7 31.exf5 Nxd3 32.cxd3 Ng7 33.f6 Nf5 34.Nxf5
Bxf5 35.Qe5 Rdf7 36.Rf4 Qh6 37.d4 Rc8 38.Ne7 Re8 39.Nxf5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Rossetto, Hector Decio"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[ECO "B48"]
[EventDate "1964.05.20"]
[PlyCount "145"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Bd3 Nc6 7.Be3 Nf6 8.O-O 
Bd6 9.h3 b5 10.Nde2 Ne7 11.a3 Bb7 12.Bg5 h6 13.Be3 Rd8 14.Qe1 Bc5 15.Bf4 
e5 16.Bd2 O-O 17.Kh1 d5 18.Ng3 Rfe8 19.f3 Bb6 20.Nd1 Ng6 21.a4 Bc6 22.axb5
Bxb5 23.Nc3 Bxd3 24.cxd3 Nf4 25.Bxf4 exf4 26.Nf5 dxe4 27.dxe4 a5 28.Qh4 
Qe5 29.Rfd1 Kh7 30.g3 fxg3 31.Qxg3 Qxg3 32.Nxg3 Bc7 33.Kg2 Rb8 34.Ra2 Rb3 
35.Nge2 Reb8 36.Rd2 R3b7 37.Kf1 g5 38.Nd5 Nxd5 39.exd5 Rd8 40.Nc3 Kg6 41.
Ne4 Bf4 42.Rd3 f5 43.Nc3 Bd6 44.Rxa5 Rxb2 45.Ra6 Rb3 46.Re3 Kh5 47.Rc6 Kh4
48.Kg2 Bf8 49.Ree6 Rb2+ 50.Ne2 h5 51.Rc4+ f4 52.Rd4 Bc5 53.Rd1 Be3 54.Kf1 
Rd2 55.Rxd2 Bxd2 56.Re5 Be3 57.Rf5 Rb8 58.Nc3 g4 59.hxg4 hxg4 60.fxg4 Kxg4
61.Rf7 Kf3 62.Ke1 Rb2 63.Kd1 Rd2+ 64.Kc1 Rxd5+ 65.Kc2 Rd2+ 66.Kb3 Bf2 67.
Rf8 Rd4 68.Re8 Be3 69.Re5 Rd3 70.Kc4 Rd4+ 71.Kb3 Rd3 72.Kc4 Rd4+ 73.Kb3 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Smyslov, Vassily"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "B00"]
[EventDate "1964.05.20"]
[PlyCount "65"]

1.Nf3 d6 2.d4 Bg4 3.e4 Nc6 4.Bb5 Nf6 5.h3 Bh5 6.Nc3 a6 7.Ba4 Nd7 8.d5 Ncb8
9.g4 Bg6 10.Nh4 b5 11.Bb3 Nc5 12.Nxg6 hxg6 13.Be3 Nbd7 14.Qe2 Rb8 15.O-O-O
Nxb3+ 16.cxb3 e5 17.dxe6 fxe6 18.f4 Be7 19.e5 O-O 20.h4 d5 21.Qd3 Qe8 22.
Nxd5 Bc5 23.Nc3 Bxe3+ 24.Qxe3 Nb6 25.h5 b4 26.Ne2 Nd5 27.Qd3 Nxf4 28.Nxf4 
Rxf4 29.hxg6 Qc6+ 30.Kb1 Qe4 31.Qxe4 Rxe4 32.Rh7 Rxg4 33.Rdh1 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Spassky, Boris"]
[Black "Benko, Pal"]
[Result "1-0"]
[ECO "B17"]
[EventDate "1964.05.20"]
[PlyCount "99"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6 8.Bb3 
h6 9.N5f3 c5 10.Be3 Qc7 11.Ne5 Bd6 12.Ngf3 O-O 13.O-O Nbd5 14.c3 b6 15.
Rad1 Bb7 16.Bc1 Rad8 17.Rfe1 Rfe8 18.a3 Qc8 19.Ba4 Rf8 20.dxc5 bxc5 21.Bb5
Nb6 22.Bd3 Qc7 23.h3 Bd5 24.c4 Ba8 25.b3 Nbd7 26.Bc2 Nxe5 27.Nxe5 Bxe5 28.
Qxe5 Qxe5 29.Rxe5 Be4 30.Rxd8 Rxd8 31.Bxe4 Rd1+ 32.Kh2 Rxc1 33.Bc6 Ra1 34.
Rxc5 Rxa3 35.Ba4 Ne4 36.Rc7 Nd2 37.Be8 Nxb3 38.Bxf7+ Kh7 39.h4 h5 40.Bxe6 
Nd4 41.Bd5 Kg6 42.Rd7 Nf5 43.c5 Kf6 44.c6 Ne7 45.c7 Rc3 46.Bb7 a5 47.Rxe7 
Kxe7 48.c8=Q Rxc8 49.Bxc8 a4 50.Ba6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Stein, Leonid"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "A07"]
[EventDate "1964.05.20"]
[PlyCount "53"]

1.e4 c6 2.d3 d5 3.Nd2 g6 4.Ngf3 Bg7 5.g3 dxe4 6.dxe4 Nf6 7.Bg2 O-O 8.O-O 
Nbd7 9.e5 Nd5 10.e6 fxe6 11.Ng5 Nc5 12.Qe2 e5 13.Nc4 Qc7 14.Re1 h6 15.Ne4 
Nxe4 16.Bxe4 Bf5 17.Bg2 Rf7 18.c3 Rd8 19.Nxe5 Nxc3 20.bxc3 Bxe5 21.Qxe5 
Qxe5 22.Rxe5 Rd1+ 23.Bf1 Bd3 24.Bb2 Rd2 25.Bxd3 Rfxf2 26.Bc4+ Kf8 27.Bc1 
1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Tal, Mikhail"]
[Black "Bilek, Istvan"]
[Result "1-0"]
[ECO "B94"]
[EventDate "1964.05.20"]
[PlyCount "45"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Bc4 h6 8.Bxf6 
Nxf6 9.Qe2 e6 10.O-O-O Qc7 11.f4 e5 12.Nd5 Nxd5 13.exd5 Be7 14.fxe5 dxe5 
15.Ne6 Qd6 16.Nxg7+ Kf8 17.Ne6+ Ke8 18.Rhf1 Bg5+ 19.Kb1 b5 20.Qh5 Bf4 21.
Bb3 a5 22.Nc7+ Qxc7 23.d6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.06"]
[Round "13"]
[White "Tringov, Georgi"]
[Black "Reshevsky, Samuel Herman"]
[Result "1/2-1/2"]
[ECO "B99"]
[EventDate "1964.05.20"]
[PlyCount "78"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Nbd7 8.Qf3 
Qc7 9.O-O-O Be7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.a3 Rb8 14.Bh3 O-O 15.
Rhg1 Nc5 16.f5 b4 17.axb4 Rxb4 18.f6 Bd8 19.fxg7 Kxg7 20.Nf5+ exf5 21.Nd5 
Nb3+ 22.Kb1 Qc5 23.cxb3 Bb7 24.Nxb4 Bxe4+ 25.Nd3 Qxg1 26.Rxg1 Bxf3 27.Bxf5
Re8 28.h4 Be4 29.Rf1 d5 30.Kc2 a5 31.Bxe4 dxe4 32.Nf4 h6 33.gxh6+ Kxh6 34.
Ne2 Kg7 35.h5 Bg5 36.Rf5 Rc8+ 37.Nc3 f6 38.Rxa5 e3 39.Kd3 Kh6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Benko, Pal"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[ECO "C45"]
[EventDate "1964.05.20"]
[PlyCount "68"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 Bb6 6.a4 a5 7.Nc3 Qf6 8.Qe2 
Nge7 9.Be3 Nb4 10.Bxb6 Qxb6 11.O-O-O O-O 12.g3 d6 13.Bg2 Be6 14.Nd4 Nec6 
15.Qe3 Bg4 16.f3 Ne5 17.b3 Bd7 18.Rhe1 Rac8 19.h3 Rfe8 20.f4 Nec6 21.Ndb5 
Qxe3+ 22.Rxe3 f6 23.Rde1 Nd8 24.e5 dxe5 25.fxe5 Rxe5 26.Rxe5 fxe5 27.Rxe5 
Ndc6 28.Re2 Kf8 29.Ne4 b6 30.Nf2 Ne7 31.Bb7 Bxb5 32.axb5 Rd8 33.Be4 h6 34.
Kb2 Rd6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Berger, Bela"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "B95"]
[EventDate "1964.05.20"]
[PlyCount "74"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bg5 a6 7.Qd2 Be7 8.O-O-O 
b5 9.a3 Bb7 10.f3 Nbd7 11.Bd3 Rc8 12.h4 Ne5 13.Kb1 Nc4 14.Bxc4 Rxc4 15.g4 
O-O 16.h5 b4 17.axb4 Rxb4 18.Be3 d5 19.g5 Nd7 20.g6 Rxb2+ 21.Kxb2 Ne5 22.
Qe1 Nc4+ 23.Kb1 Qb6+ 24.Nb3 Nxe3 25.Na4 Qa7 26.Rd3 Nc4 27.Qg1 Qxg1+ 28.
Rxg1 Rc8 29.gxf7+ Kxf7 30.c3 Bc6 31.Nac5 Bb5 32.exd5 Bxc5 33.dxe6+ Kxe6 
34.Nxc5+ Rxc5 35.Rd4 Rxh5 36.Rxg7 Rh2 37.Rc7 Nd2+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Bilek, Istvan"]
[Black "Stein, Leonid"]
[Result "1/2-1/2"]
[ECO "A65"]
[EventDate "1964.05.20"]
[PlyCount "59"]

1.d4 c5 2.d5 d6 3.c4 Nf6 4.Nc3 g6 5.e4 Bg7 6.Bd3 O-O 7.Nge2 e6 8.O-O exd5 
9.cxd5 a6 10.a4 Qc7 11.Ng3 Nbd7 12.Qe2 Re8 13.f4 c4 14.Bxc4 Nc5 15.e5 dxe5
16.f5 e4 17.Bg5 Qe5 18.Bf4 Qe7 19.d6 Qd8 20.Bxf7+ Kxf7 21.Qc4+ Ne6 22.
fxe6+ Bxe6 23.Qd4 Rc8 24.Be5 Rc4 25.Qa7 Kg8 26.Qxb7 Bc8 27.Qb3 Be6 28.Qb7 
Bc8 29.Qb3 Be6 30.Qb7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Evans, Larry Melvyn"]
[Black "Tringov, Georgi"]
[Result "1-0"]
[ECO "A36"]
[EventDate "1964.05.20"]
[PlyCount "72"]

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.a3 e6 6.e4 Nge7 7.Nge2 O-O 8.O-O b6 
9.Rb1 Bb7 10.b4 d6 11.d3 Nd4 12.Nxd4 Bxd4 13.Ne2 Bg7 14.Be3 Qd7 15.d4 cxb4
16.axb4 d5 17.exd5 exd5 18.c5 Ba6 19.Re1 Bc4 20.Qd2 b5 21.Bh6 Bxh6 22.Qxh6
Nc6 23.Nf4 Qd8 24.g4 Nxd4 25.Rbd1 Qf6 26.Re3 Nc2 27.Nh5 Qh8 28.Rf3 gxh5 
29.gxh5 Qe5 30.Qd2 Nxb4 31.Qxb4 Rfe8 32.h6 Re6 33.Qd2 Rg6 34.Rg3 Rd8 35.c6
Qd6 36.Be4 Qxc6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Ivkov, Borislav"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.dxe5 dxe5 13.Nbd2 f6 14.Nf1 Nb6 15.Qe2 Be6
16.Ne3 Ra7 17.Nf5 Re8 18.Nxe7+ Rexe7 19.b3 Rad7 20.Nh4 Qc7 21.Nf5 Re8 22.
Rd1 Red8 23.Rxd7 Rxd7 24.Qg4 Kh8 25.Be3 Nb7 26.Qh5 Rd8 27.Rf1 Nd7 28.Qe2 
Nb8 29.a4 Qa5 30.axb5 axb5 31.Rc1 Nc6 32.Bd3 b4 33.Bb5 Qb6 34.Ra1 Nba5 35.
Bxc6 Nxc6 36.Ra6 Qb7 37.cxb4 Bxf5 38.exf5 Nxb4 39.Re6 Qd5 40.Qb5 Qxb3 41.
Bxc5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Lengyel, Levente"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "A39"]
[EventDate "1964.05.20"]
[PlyCount "116"]

1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 c5 6.Nc3 cxd4 7.Nxd4 Nc6 8.O-O 
Nxd4 9.Qxd4 d6 10.Qd3 Bf5 11.e4 Be6 12.b3 Nd7 13.Bb2 a6 14.Qe2 Qa5 15.Nd5 
Bxd5 16.cxd5 Bxb2 17.Qxb2 Qb6 18.Kh1 Rac8 19.Rac1 Rc5 20.Bh3 Nf6 21.Rxc5 
Qxc5 22.Rc1 Qb4 23.f3 h5 24.Qc3 Qb6 25.Qc7 Qe3 26.Rf1 Qe2 27.Qxb7 Kg7 28.
Qa7 h4 29.g4 Rc8 30.Qf2 Rc2 31.Qxe2 Rxe2 32.Ra1 a5 33.Kg1 Nd7 34.Bf1 Rb2 
35.Rc1 Ne5 36.Rc3 Rxa2 37.g5 f6 38.f4 Nf7 39.gxf6+ Kxf6 40.Rf3 g5 41.e5+ 
Kg7 42.exd6 exd6 43.fxg5 Nxg5 44.Re3 Kf6 45.h3 Rb2 46.Bg2 Kf5 47.Rc3 Ke5 
48.Rc4 Rxb3 49.Rxh4 Rb4 50.Rh8 Kf4 51.h4 Nf3+ 52.Bxf3 Kxf3 53.h5 Rb1+ 54.
Kh2 Rb7 55.Rd8 Rh7 56.Rxd6 Rxh5+ 57.Kg1 Ke4 58.Kf2 Rxd5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Perez Perez, Francisco Jose"]
[Black "Pachman, Ludek"]
[Result "0-1"]
[ECO "E31"]
[EventDate "1964.05.20"]
[PlyCount "90"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.d5 Bxc3+ 6.bxc3 d6 7.Bg5 e5 8.Nd2 h6
9.Bh4 Nbd7 10.e3 Qe7 11.Bd3 O-O 12.f3 Re8 13.Qc2 Nf8 14.O-O g5 15.Bf2 Kg7 
16.Rab1 b6 17.Ne4 Nxe4 18.Bxe4 Nd7 19.Bf5 Nf6 20.Bxc8 Raxc8 21.e4 Qd7 22.
Rb5 Rb8 23.Rb2 Rb7 24.Be3 Reb8 25.Rfb1 Ne8 26.a4 a6 27.Ra1 b5 28.axb5 axb5
29.cxb5 Rxb5 30.Rba2 Nf6 31.Qc1 Ng8 32.g4 Qe7 33.h4 gxh4 34.g5 h5 35.Qe1 
Qb7 36.Qxh4 Rb1+ 37.Bc1 Qb3 38.Qe1 h4 39.Kg2 Rxa1 40.Rxa1 Qc2+ 41.Kh3 Qd3 
42.Kg4 h3 43.Ra7 h2 44.Qh4 Qf1 45.Qh5 Rf8 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Porath, Yosef"]
[Black "Foguelman, Alberto"]
[Result "0-1"]
[ECO "E60"]
[EventDate "1964.05.20"]
[PlyCount "108"]

1.d4 Nf6 2.c4 g6 3.g3 c5 4.Nf3 Bg7 5.Bg2 Nc6 6.d5 Na5 7.Qc2 d6 8.e4 O-O 9.
O-O a6 10.a4 Rb8 11.Bd2 e5 12.b4 cxb4 13.Bxb4 b6 14.Nbd2 Nb7 15.a5 bxa5 
16.Ba3 Ne8 17.Ne1 Bd7 18.Nd3 Rc8 19.Rfb1 Qc7 20.Qb2 Nd8 21.Qb6 Bh6 22.f4 
f5 23.Qxc7 Rxc7 24.Rb8 Nf7 25.c5 Bb5 26.cxd6 Nexd6 27.Rxf8+ Bxf8 28.Nxe5 
fxe4 29.Nxf7 Kxf7 30.Nxe4 Nxe4 31.Bxe4 Bxa3 32.Rxa3 a4 33.Kf2 Ke7 34.Ke3 
Kd6 35.h4 Rc1 36.Kd2 Rc4 37.Ke3 Kc5 38.h5 Kb4 39.hxg6 hxg6 40.Ra1 Rc3+ 41.
Kd4 Rxg3 42.d6 a3 43.Bd5 Bd7 44.Be4 Be6 45.Ke5 Re3 46.Kd4 Rg3 47.Ke5 Re3 
48.Kd4 Re2 49.Bxg6 Rd2+ 50.Ke5 Bb3 51.Rb1 Rd5+ 52.Ke4 a2 53.Ra1 Rxd6 54.f5
Rd1 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Portisch, Lajos"]
[Black "Gligoric, Svetozar"]
[Result "1/2-1/2"]
[ECO "D79"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.c4 c6 6.d4 d5 7.cxd5 cxd5 8.Nc3 
Nc6 9.Ne5 e6 10.Bf4 Nd7 11.Nf3 Nf6 12.Qc1 Bd7 13.Bh6 Rc8 14.Bxg7 Kxg7 15.
Qf4 Qb6 16.Rab1 Rfd8 17.Rfd1 Be8 18.Ne5 Qb4 19.Rd3 Qe7 20.g4 h6 21.Rbd1 g5
22.Qg3 Nb4 23.R3d2 Nh7 24.a3 Nc6 25.e4 dxe4 26.Bxe4 Nf8 27.Nf3 Qd6 28.d5 
Qxg3+ 29.hxg3 exd5 30.Bxd5 Ng6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Reshevsky, Samuel Herman"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "E01"]
[EventDate "1964.05.20"]
[PlyCount "31"]

1.d4 e6 2.Nf3 c5 3.g3 cxd4 4.Nxd4 d5 5.Bg2 Nf6 6.O-O Bc5 7.c4 O-O 8.cxd5 
Nxd5 9.Nb3 Be7 10.Bd2 Nc6 11.Nc3 Bf6 12.Rc1 a5 13.Nc5 Bd4 14.Nb3 Bf6 15.
Nc5 Bd4 16.Nb3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Rossetto, Hector Decio"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "E94"]
[EventDate "1964.05.20"]
[PlyCount "72"]

1.d4 Nf6 2.Nf3 d6 3.c4 g6 4.Nc3 Bg7 5.e4 O-O 6.Be2 e5 7.O-O exd4 8.Nxd4 
Re8 9.Qc2 Nxe4 10.Nxe4 Bxd4 11.Bg5 f6 12.Rad1 fxg5 13.Rxd4 Bf5 14.c5 Nc6 
15.Bc4+ Kg7 16.Qc3 Nxd4 17.Qxd4+ Kh6 18.Ng3 Re5 19.f4 gxf4 20.Rxf4 Qe7 21.
Qd2 Kg7 22.cxd6 cxd6 23.h3 Be6 24.Bxe6 Qxe6 25.Rh4 Kg8 26.Qh6 Qe7 27.Rg4 
Rf8 28.Kh2 d5 29.Nh5 Re6 30.h4 d4 31.Nf4 Ref6 32.Nh5 Rb6 33.Nf4 Qd7 34.Rg3
Qg7 35.Qg5 Rf5 36.Qd8+ Qf8 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.07"]
[Round "14"]
[White "Vranesic, Zvonko"]
[Black "Darga, Klaus"]
[Result "1/2-1/2"]
[ECO "E84"]
[EventDate "1964.05.20"]
[PlyCount "65"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 Rb8 
9.Bh6 b5 10.h4 e5 11.d5 Na5 12.Ng3 c6 13.Bxg7 Kxg7 14.h5 cxd5 15.hxg6 fxg6
16.Nxd5 Nxc4 17.Bxc4 bxc4 18.Qh6+ Kf7 19.Nxf6 Qxf6 20.Qxh7+ Qg7 21.O-O-O 
Rb6 22.Ne2 Be6 23.Nc3 Rg8 24.Rd2 Qxh7 25.Rxh7+ Rg7 26.Rxg7+ Kxg7 27.Kd1 
Kf7 28.Ke2 Ke7 29.Ke3 Rb8 30.Nb1 Rh8 31.Na3 Rh1 32.Rc2 Ra1 33.Nxc4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Bronstein, David"]
[Black "Evans, Larry Melvyn"]
[Result "1-0"]
[ECO "E80"]
[EventDate "1964.05.20"]
[PlyCount "114"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 c6 6.Be3 a6 7.a4 a5 8.Bd3 e5 9.
Nge2 Na6 10.Qd2 Nb4 11.Rd1 Qe7 12.Bb1 O-O 13.O-O exd4 14.Bxd4 Be6 15.b3 d5
16.cxd5 cxd5 17.e5 Nd7 18.Qe3 f6 19.exf6 Bxf6 20.Nf4 Bf7 21.Qxe7 Bxe7 22.
Rfe1 Rfe8 23.Bf2 Bc5 24.Nb5 Bxf2+ 25.Kxf2 Nc5 26.Rxe8+ Rxe8 27.Nd4 Kg7 28.
Rc1 b6 29.h4 h6 30.Rd1 Kf6 31.g4 Re5 32.Ng2 Re8 33.Nf4 Re5 34.Nfe2 Re8 35.
Ng3 Ne6 36.Nde2 Nc5 37.f4 Nxb3 38.g5+ hxg5 39.hxg5+ Ke7 40.f5 gxf5 41.
Nxf5+ Kd7 42.Nf4 Nc5 43.Nh6 Ne4+ 44.Bxe4 Rxe4 45.Kf3 Ke8 46.Nf5 Kd7 47.Ne3
Kc6 48.Rh1 Kc5 49.Nf5 b5 50.axb5 a4 51.b6 Kxb6 52.Nd6 Bg8 53.Nxe4 dxe4+ 
54.Kxe4 a3 55.Kd4 a2 56.Kc3 Kc5 57.g6 Nc6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Darga, Klaus"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[ECO "A10"]
[EventDate "1964.05.20"]
[PlyCount "82"]

1.Nf3 e6 2.g3 f5 3.Bg2 Nf6 4.O-O c6 5.c4 d5 6.d3 Bc5 7.Nbd2 O-O 8.Qc2 Qe7 
9.e4 dxe4 10.dxe4 e5 11.exf5 Ng4 12.Ne4 Bxf5 13.Qe2 Nd7 14.Bg5 Qe8 15.Rad1
Bxe4 16.Qxe4 Nxf2 17.Rxf2 Bxf2+ 18.Kxf2 Nc5 19.Qe3 e4 20.Qxc5 exf3 21.Bf1 
Qh5 22.h4 Rae8 23.Be3 Re5 24.Qd4 Rfe8 25.Bf4 Re4 26.Qd3 Rxf4 27.gxf4 Qxh4+
28.Kxf3 Rf8 29.Qd6 h5 30.Qe6+ Kh8 31.Rd4 c5 32.Re4 Rd8 33.Qh3 Rd3+ 34.Re3 
Rxe3+ 35.Kxe3 Qe1+ 36.Be2 h4 37.Kf3 g6 38.Qg2 Kh7 39.Qf2 Qh1+ 40.Kg4 h3 
41.Bf3 Qc1 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Foguelman, Alberto"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "C72"]
[EventDate "1964.05.20"]
[PlyCount "61"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bg4 6.h3 Bh5 7.c4 Nf6 8.d4 Bxf3 
9.Qxf3 b5 10.cxb5 Nxd4 11.bxa6+ c6 12.Qd3 Qa5 13.Nc3 Qxa6 14.Rd1 Be7 15.
Be3 Qxd3 16.Rxd3 O-O 17.Bxd4 exd4 18.Rxd4 Ra6 19.Rc4 c5 20.Bb5 Rb6 21.a4 
Rfb8 22.f4 Bf8 23.g4 h6 24.g5 hxg5 25.fxg5 Nh7 26.h4 g6 27.Nd5 Rxb5 28.
axb5 Rxb5 29.b4 Bg7 30.Ra5 Bd4+ 31.Rxd4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Gligoric, Svetozar"]
[Black "Porath, Yosef"]
[Result "0-1"]
[ECO "C13"]
[EventDate "1964.05.20"]
[PlyCount "38"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Nbd7 6.Nf3 Be7 7.Nxf6+ Bxf6 8.
h4 h6 9.Bxf6 Qxf6 10.Qd2 O-O 11.O-O-O e5 12.Qe3 exd4 13.Rxd4 Nc5 14.Bc4 
Be6 15.g4 Bxc4 16.Rxc4 Rfe8 17.Qxc5 Qxf3 18.Rg1 Rad8 19.Qf5 Qg2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Larsen, Bent"]
[Black "Portisch, Lajos"]
[Result "1-0"]
[ECO "C01"]
[EventDate "1964.05.20"]
[PlyCount "65"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.exd5 exd5 5.Qf3 Nc6 6.Bb5 Ne7 7.Bf4 O-O 8.
O-O-O Na5 9.Nge2 c6 10.Bd3 b5 11.h4 Nc4 12.h5 f6 13.g4 Qa5 14.Bxc4 dxc4 
15.a3 Bxc3 16.Nxc3 Qd8 17.Rhe1 a5 18.Qg3 Ra7 19.h6 g6 20.Bd6 Re8 21.Qf4 
Kf7 22.Be5 f5 23.Bb8 Rb7 24.Qe5 Rg8 25.g5 b4 26.Qf6+ Ke8 27.Qxc6+ Kf7 28.
Qf6+ Ke8 29.d5 Rf8 30.Qc6+ Qd7 31.Bd6 Rf7 32.Bxe7 bxc3 33.Bb4+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Pachman, Ludek"]
[Black "Benko, Pal"]
[Result "1/2-1/2"]
[ECO "A39"]
[EventDate "1964.05.20"]
[PlyCount "253"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 Nc6 4.g3 g6 5.Bg2 Bg7 6.d4 cxd4 7.Nxd4 Nxd4 8.Qxd4
O-O 9.O-O d6 10.Qh4 Qa5 11.Bd2 Be6 12.Rad1 Rab8 13.b3 Rfc8 14.Nd5 Qd8 15.
Be3 Bxd5 16.Bxd5 Qa5 17.a4 Qb4 18.Bxa7 Ra8 19.Be3 Qxb3 20.Rb1 Qxa4 21.Bxb7
Rxc4 22.Qh3 Ra5 23.Bf3 h5 24.Rb8+ Kh7 25.Rb7 Re5 26.Bf4 Re6 27.Rfb1 Bh6 
28.Bxh6 Kxh6 29.e3 Qa3 30.R7b3 Qa2 31.R3b2 Rc1+ 32.Rxc1 Qxb2 33.Qf1 Re5 
34.Rb1 Qc2 35.h4 Rc5 36.Rb4 Qd2 37.Rd4 Qb2 38.Rc4 Ra5 39.Rc1 Rf5 40.Rb1 
Qa2 41.Ra1 Qe6 42.Bg2 Rc5 43.Bf3 Qc8 44.Kg2 Rc2 45.Ra7 Qe6 46.Qd3 Rb2 47.
Qc3 Ra2 48.Rb7 Kh7 49.Rb8 Kg7 50.Rb5 Ra7 51.e4 Qd7 52.Qb2 Ra2 53.Qxa2 Qxb5
54.Be2 Qe5 55.f3 d5 56.exd5 Nxd5 57.Qd2 Ne3+ 58.Kf2 Nf5 59.f4 Qc5+ 60.Kg2 
Nd4 61.Qd3 Nxe2 62.Qxe2 Qd5+ 63.Kh2 Kf6 64.Qc2 e6 65.Kg1 Qf3 66.Kh2 Qf1 
67.Qe4 Qf2+ 68.Kh3 Qc5 69.Kh2 Qc3 70.Kg2 Qd2+ 71.Kg1 Qb2 72.Qd3 Ke7 73.Kf1
Qa2 74.Kg1 Kf6 75.Qe4 Qb2 76.Qd3 Ke7 77.Kf1 Qb7 78.Kg1 Qd5 79.Qc3 Kd6 80.
Kh2 Qe4 81.Qf6 Qc2+ 82.Kg1 Qc7 83.Qd4+ Kc6 84.Kh2 Qa5 85.Qe4+ Qd5 86.Qa4+ 
Qb5 87.Qa8+ Qb7 88.Qa4+ Kd5 89.Qa2+ Kd6 90.Qa3+ Kd7 91.Qa4+ Ke7 92.Qa3+ 
Kf6 93.Qd3 Qd5 94.Qc2 Qd6 95.Qe4 Qc5 96.Qd3 Kg7 97.Qd2 Qe7 98.Qd4+ f6 99.
Kg2 e5 100.fxe5 fxe5 101.Qe4 Qd6 102.Kf2 Qd2+ 103.Kf3 Qc3+ 104.Kf2 Kf6 
105.Kg2 Qd2+ 106.Kf3 Qd1+ 107.Kg2 Qd7 108.Kh2 Qd2+ 109.Kh3 Qd4 110.Qc6+ 
Kf7 111.Kg2 Qd2+ 112.Kg1 Qd3 113.Kg2 e4 114.Qc7+ Ke6 115.Qc6+ Ke5 116.Qxg6
Qe2+ 117.Kg1 Qd1+ 118.Kf2 Qc2+ 119.Kf1 Qb1+ 120.Ke2 Qd3+ 121.Ke1 Qe3+ 122.
Kf1 Qf3+ 123.Ke1 Qc3+ 124.Ke2 Qb2+ 125.Ke3 Qb3+ 126.Ke2 Qb5+ 127.Kf2 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Quinones Carillo, Oscar"]
[Black "Rossetto, Hector Decio"]
[Result "1/2-1/2"]
[ECO "C74"]
[EventDate "1964.05.20"]
[PlyCount "85"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Nf6 6.d4 b5 7.Bb3 Bg4 8.Be3 Na5 
9.Bc2 Nc4 10.Bc1 exd4 11.cxd4 d5 12.e5 Bb4+ 13.Kf1 Ne4 14.a3 Be7 15.b3 Nb6
16.h3 Bh5 17.Nbd2 Bg6 18.Bb2 O-O 19.Rc1 f6 20.Qe2 Nxd2+ 21.Nxd2 Bxc2 22.
Rxc2 fxe5 23.Qxe5 Bd6 24.Qe6+ Kh8 25.Nf3 Rf6 26.Qe2 Qf8 27.h4 Re8 28.Qd3 
Rfe6 29.g3 h6 30.Kg2 Kg8 31.Ne5 Qf6 32.Re1 Qe7 33.f4 c5 34.dxc5 Bxc5 35.b4
Bd6 36.Rce2 Qb7 37.Bd4 Nc4 38.Ng6 Rxe2+ 39.Rxe2 Re4 40.h5 Qc6 41.Be5 Rxe2+
42.Qxe2 d4+ 43.Kh2 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Smyslov, Vassily"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "D94"]
[EventDate "1964.05.20"]
[PlyCount "89"]

1.Nf3 d5 2.c4 c6 3.e3 Nf6 4.Nc3 g6 5.Be2 Bg7 6.O-O O-O 7.d4 dxc4 8.Bxc4 
Bg4 9.h3 Bxf3 10.Qxf3 Nbd7 11.Rd1 e5 12.d5 Qc7 13.dxc6 Qxc6 14.Qxc6 bxc6 
15.e4 Rfd8 16.Bg5 h6 17.Be3 Bf8 18.Kf1 Kg7 19.Rd2 Nb6 20.Rxd8 Rxd8 21.Ba6 
Bb4 22.f3 Ne8 23.Rd1 Rd6 24.Rxd6 Nxd6 25.Nd1 Ndc8 26.Nf2 Ba5 27.Ng4 f6 28.
Bxh6+ Kf7 29.Bc1 Nd6 30.Ne3 Nb5 31.a3 Na4 32.Bxb5 cxb5 33.Nd5 Bb6 34.Ke2 
Bd4 35.Nc7 Bxb2 36.Bxb2 Nxb2 37.Nxb5 a6 38.Nc3 g5 39.Nd1 Nc4 40.a4 Ke6 41.
Kd3 Nb6 42.a5 Nd7 43.Kc4 f5 44.exf5+ Kxf5 45.Nc3 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Spassky, Boris"]
[Black "Bilek, Istvan"]
[Result "1-0"]
[ECO "C92"]
[EventDate "1964.05.20"]
[PlyCount "67"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 Be6 10.d4 Bxb3 11.Qxb3 Qd7 12.Nbd2 Rfe8 13.a4 Rab8 14.axb5 Rxb5 15.
Qc2 exd4 16.Nxd4 Nxd4 17.cxd4 a5 18.Re3 Bd8 19.b3 Nh5 20.Nf3 c5 21.d5 Bf6 
22.Ra4 Nf4 23.Bd2 Bd8 24.Bc3 Ng6 25.Nd2 Bg5 26.Rg3 Bxd2 27.Bxd2 Qc7 28.Qa2
Ra8 29.Kh2 Kh8 30.Qc2 Qb6 31.Qd1 Qb7 32.f4 f6 33.Qh5 Qf7 34.Qg4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Stein, Leonid"]
[Black "Lengyel, Levente"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "99"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.Nbd2 cxd4 13.cxd4 Nc6 14.Nb3 a5 15.Bd3 Rb8
16.Qe2 Ba6 17.Be3 a4 18.Nbd2 exd4 19.Nxd4 Nxd4 20.Bxd4 Ne5 21.Rad1 Bf6 22.
Bb1 Ra8 23.Qe3 Re8 24.Nf3 Qe7 25.b3 Bb7 26.Nh2 axb3 27.axb3 Rac8 28.Nf1 
Bc6 29.Qe2 Qb7 30.Qd2 Rcd8 31.Qb2 Bg5 32.Ng3 g6 33.Nf1 Nd7 34.f3 Bf4 35.
Ne3 h5 36.Qf2 Be5 37.b4 Nf6 38.Ba2 Qe7 39.Rd2 Ra8 40.Red1 Ra3 41.Bxe5 dxe5
42.Rd6 Ba8 43.Kh2 Kg7 44.Qd2 Kh7 45.Rb6 Bxe4 46.fxe4 Nxe4 47.Qd5 Ng5 48.
Rb7 Qxb4 49.Rxf7+ Kh6 50.Nc2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Tal, Mikhail"]
[Black "Reshevsky, Samuel Herman"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "68"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.Nbd2 cxd4 13.cxd4 Nc6 14.Nb3 a5 15.Bd3 Rb8
16.Qe2 Ba6 17.Bd2 exd4 18.Nbxd4 Nxd4 19.Nxd4 Ne5 20.Rad1 Qb6 21.Be3 Qb7 
22.Nf5 Rfe8 23.Bd4 Bf8 24.b3 g6 25.Ne3 Bg7 26.Nd5 f6 27.Bb1 Qf7 28.Bb6 f5 
29.exf5 gxf5 30.Bc7 Rbc8 31.Bxd6 Bb7 32.Qxb5 Bxd5 33.Bxe5 Rxe5 34.Rxe5 
Bxe5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.08"]
[Round "15"]
[White "Tringov, Georgi"]
[Black "Vranesic, Zvonko"]
[Result "1-0"]
[ECO "A04"]
[EventDate "1964.05.20"]
[PlyCount "95"]

1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.Nbd2 d6 5.g3 g6 6.Bg2 Bg7 7.O-O Nge7 8.c3 O-O 
9.Nb3 e5 10.d4 Na5 11.Nxa5 Qxa5 12.dxe5 dxe5 13.Qd6 Nc6 14.Be3 c4 15.Qd2 
Rd8 16.Qe2 Qa6 17.b4 Rd3 18.a4 b5 19.Qc2 Qb7 20.axb5 Qxb5 21.Rfb1 Be6 22.
Bf1 Rdd8 23.Ng5 Nd4 24.cxd4 exd4 25.Nxe6 d3 26.Qa4 Qxa4 27.Rxa4 fxe6 28.
Rd1 a6 29.Bb6 Rd6 30.Bc5 Rdd8 31.Kg2 h5 32.f4 e5 33.Kf3 Rac8 34.Be3 Rc6 
35.Ra5 exf4 36.gxf4 Bc3 37.Rc5 Rdc8 38.Bh3 Bxb4 39.Bxc8 Bxc5 40.Bb7 Rc7 
41.Bd5+ Kg7 42.Bxc5 Rxc5 43.Ke3 h4 44.Kd4 Rb5 45.Bxc4 Rb2 46.h3 Rf2 47.
Rxd3 Rxf4 48.Bxa6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Benko, Pal"]
[Black "Foguelman, Alberto"]
[Result "0-1"]
[ECO "C05"]
[EventDate "1964.05.20"]
[PlyCount "118"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Ndf3 cxd4 8.cxd4 
Qb6 9.g3 Bb4+ 10.Kf2 f5 11.Kg2 Ndb8 12.Bd3 Bd7 13.Ne2 a5 14.h3 Na6 15.g4 
g6 16.gxf5 gxf5 17.Kh2 O-O-O 18.Be3 Be7 19.Qd2 Rdg8 20.Nc3 Nc7 21.a3 Rg7 
22.Rhg1 Rhg8 23.Rxg7 Rxg7 24.Qc2 Be8 25.Na4 Qa7 26.b3 Bh5 27.Qf2 Bxf3 28.
Qxf3 Nxd4 29.Qd1 b5 30.b4 axb4 31.axb4 Bxb4 32.Bf1 bxa4 33.Bxd4 Bc5 34.
Rxa4 Qb6 35.Qd2 Qb3 36.Ra1 Bxd4 37.Qxd4 Qc2+ 38.Kh1 Qe4+ 39.Qxe4 fxe4 40.
Kh2 Kb7 41.Be2 Kb6 42.Rc1 d4 43.Rb1+ Kc6 44.Rc1+ Kb6 45.Rb1+ Ka5 46.Bg4 
Nd5 47.f5 exf5 48.Bxf5 Nc3 49.Re1 e3 50.e6 Kb4 51.Rg1 Re7 52.Kg2 Kc4 53.
Kf3 Nb5 54.Ke2 Nc7 55.Rc1+ Kd5 56.Kd3 Nxe6 57.Bxe6+ Rxe6 58.Rc4 e2 59.Rc1 
e1=Q 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Berger, Bela"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "E58"]
[EventDate "1964.05.20"]
[PlyCount "85"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.e3 O-O 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3 
9.bxc3 Qc7 10.cxd5 exd5 11.Nh4 Ne7 12.g3 c4 13.Bb1 Ng6 14.Ng2 Ne4 15.Qe1 
Nd6 16.a4 f5 17.Ba3 Bd7 18.Bc2 b6 19.Qd2 Rf6 20.Bxd6 Qxd6 21.Rfb1 Qc7 22.
f4 a5 23.Ne1 Rb8 24.Nf3 b5 25.axb5 Bxb5 26.Ne5 Ne7 27.Qc1 Ra6 28.Qa3 Rbb6 
29.Rb2 Bc6 30.Rxb6 Rxb6 31.Qxa5 g6 32.Qc5 Rb7 33.Bd1 Bb5 34.Ra8+ Kg7 35.
Qa3 Bc6 36.Nxc6 Qxc6 37.Bf3 Kf7 38.Qa5 Qb5 39.Kg2 Qxa5 40.Rxa5 Rb2+ 41.Kf1
Ke6 42.Ra3 Rb3 43.Rxb3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Bilek, Istvan"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "D02"]
[EventDate "1964.05.20"]
[PlyCount "86"]

1.d4 d5 2.Nf3 Nf6 3.g3 c6 4.Bg2 Bf5 5.Nh4 Be6 6.c3 Qc8 7.h3 g6 8.Be3 Bg7 
9.Qc1 h6 10.Na3 Nbd7 11.Nc2 Ne4 12.Nb4 Nb6 13.b3 c5 14.dxc5 Bxc3+ 15.Kf1 
Bxb4 16.Bxe4 dxe4 17.a3 Bxc5 18.Bxc5 g5 19.Ng2 Bxh3 20.Kg1 f6 21.Ne3 Be6 
22.b4 Kf7 23.Qb1 Qc6 24.Bxb6 axb6 25.Kg2 b5 26.Qb2 Rac8 27.Rac1 Qd6 28.
Rxc8 Bxc8 29.Rd1 Qe6 30.Qd4 h5 31.Qd5 h4 32.g4 Qxd5 33.Rxd5 b6 34.Rxb5 Ba6
35.Rxb6 Bxe2 36.Rc6 Rd8 37.Rc1 Rd3 38.Rb1 Rxa3 39.b5 Ra7 40.b6 Rb7 41.Rb4 
e6 42.Kh3 Bd3 43.Nd1 Ke7 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Evans, Larry Melvyn"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1964.05.20"]
[PlyCount "96"]

1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.Be2 b5 5.d4 cxd4 6.Nxd4 Bb7 7.a3 Qc7 8.O-O Nf6
9.Qd3 d6 10.Bg5 Nbd7 11.Qe3 Be7 12.Rad1 O-O 13.f4 Rac8 14.g4 Nb6 15.Bxf6 
Bxf6 16.g5 Bxd4 17.Rxd4 e5 18.Rd2 exf4 19.Rxf4 Rfe8 20.Qf2 Qe7 21.h4 Nc4 
22.Bxc4 Rxc4 23.Rd4 Rec8 24.Rxc4 Rxc4 25.Qa7 Qd7 26.Kf2 d5 27.Nxd5 Rxc2+ 
28.Kg3 Rc8 29.Rf6 Ra8 30.Qc5 Rd8 31.Rb6 Bxd5 32.exd5 Qf5 33.Qd6 Qd3+ 34.
Kg2 Qc2+ 35.Kg3 Qb3+ 36.Kf4 Re8 37.Rb8 Qe3+ 38.Kg4 f5+ 39.gxf6 h5+ 40.Kxh5
Qf3+ 41.Kg5 Qxf6+ 42.Qxf6 gxf6+ 43.Kxf6 Rxb8 44.d6 Kf8 45.h5 Rb7 46.Ke6 
Rh7 47.Kd5 Ke8 48.Kc6 Kd8 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Ivkov, Borislav"]
[Black "Tringov, Georgi"]
[Result "1/2-1/2"]
[ECO "A37"]
[EventDate "1964.05.20"]
[PlyCount "74"]

1.c4 c5 2.g3 Nc6 3.Bg2 g6 4.Nc3 Bg7 5.b3 e6 6.Bb2 Nge7 7.Nf3 O-O 8.O-O d5 
9.e3 dxc4 10.bxc4 Qd3 11.Qa4 Bd7 12.Rfc1 Rfd8 13.Bf1 Qf5 14.Nh4 Qe5 15.Qa3
b6 16.Rab1 Be8 17.Rd1 Qb8 18.Ne4 e5 19.Ba1 Qc7 20.Nc3 Nb4 21.Qb3 Bc6 22.d3
Qb7 23.a3 Na6 24.Bg2 Bxg2 25.Nxg2 Nc7 26.e4 Ne6 27.Nd5 Nc6 28.a4 Ned4 29.
Bxd4 Nxd4 30.Qa2 Qd7 31.Ne1 f5 32.exf5 gxf5 33.f3 Re8 34.a5 bxa5 35.Qg2 
Rab8 36.Nc2 Nc6 37.Qh3 Qf7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Larsen, Bent"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "C28"]
[EventDate "1964.05.20"]
[PlyCount "89"]

1.e4 e5 2.Bc4 Nf6 3.d3 Nc6 4.Nc3 Bc5 5.Bg5 h6 6.Bh4 d6 7.Na4 Bb6 8.Nxb6 
axb6 9.Ne2 Be6 10.Nc3 Nd4 11.O-O c6 12.Qd2 b5 13.Bxe6 fxe6 14.Bg3 O-O 15.
Ne2 Nxe2+ 16.Qxe2 Qe8 17.d4 Nh5 18.dxe5 Nxg3 19.hxg3 dxe5 20.a3 Qe7 21.
Rad1 Rad8 22.Qg4 Kh7 23.c3 Qf6 24.f3 Qe7 25.Kh2 Qf6 26.Kh3 Kg8 27.Qh5 Kh7 
28.Kh2 Kg8 29.Kg1 Kh7 30.Kh1 Kg8 31.Kh2 Kh7 32.Kg1 Kg8 33.Kf2 Kh7 34.Ke2 
Kg8 35.Qh4 Qg5 36.Qxg5 hxg5 37.Rxd8 Rxd8 38.Rd1 Rxd1 39.Kxd1 Kf7 40.Kc2 
Ke7 41.Kb3 Kd6 42.Kb4 b6 43.b3 g4 44.c4 bxc4 45.bxc4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Lengyel, Levente"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "A28"]
[EventDate "1964.05.20"]
[PlyCount "71"]

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Bg5 h6 7.Bh4 Bxc3+ 8.
bxc3 d6 9.f3 Ne5 10.e4 Ng6 11.Bf2 O-O 12.Qd2 c6 13.Be2 d5 14.exd5 cxd5 15.
O-O Bd7 16.Rab1 b6 17.Rfe1 Re8 18.Bg3 dxc4 19.Bxc4 Rxe1+ 20.Rxe1 Ba4 21.
Qd3 Rc8 22.Be6 fxe6 23.Qxg6 Be8 24.Qb1 Bf7 25.Qb2 Qd5 26.Nb5 Qc5+ 27.Bf2 
Qe7 28.Qb4 Qxb4 29.cxb4 Nd5 30.a3 a6 31.Nd6 Rc6 32.Bg3 Rc2 33.Be5 Bg6 34.
Bg3 Bf7 35.Be5 Kf8 36.Re4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Perez Perez, Francisco Jose"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1964.05.20"]
[PlyCount "72"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be3 Nf6 6.Nc3 Qc7 7.a3 b5 8.Bd3 Bb7
9.O-O d6 10.f4 Nbd7 11.Qf3 Nc5 12.Rac1 Be7 13.g4 h5 14.g5 Ng4 15.h3 Nxe3 
16.Qxe3 Qb6 17.Kh2 Nxd3 18.Qxd3 g6 19.h4 O-O-O 20.Nf3 Kb8 21.b4 Rc8 22.Nd4
Rc4 23.Nce2 Rhc8 24.c3 Qc7 25.Nb3 Bxe4 26.Qd2 e5 27.Na5 Qd7 28.Qe3 Bb7 29.
Nxc4 Rxc4 30.Qg3 Qc6 31.Rf2 Bd8 32.fxe5 Rg4 33.Nd4 Qd5 34.Qe3 Rxh4+ 35.Kg3
Rg4+ 36.Kh3 Bxg5 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Portisch, Lajos"]
[Black "Porath, Yosef"]
[Result "1-0"]
[ECO "E54"]
[EventDate "1964.05.20"]
[PlyCount "59"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 d5 6.Nf3 O-O 7.O-O dxc4 8.Bxc4 
Qe7 9.a3 Ba5 10.Qc2 Bd7 11.Bd3 cxd4 12.exd4 Bc6 13.Ne5 Rd8 14.Be3 Nbd7 15.
Nxc6 bxc6 16.Ne4 Rac8 17.Ba6 Rb8 18.b4 Bc7 19.Qxc6 Nd5 20.Bg5 f6 21.Bh4 
Rb6 22.Qc4 Nb8 23.Bb5 Rc8 24.Nc5 Nc3 25.Qxc3 Rxb5 26.Rfe1 Rb6 27.Qb3 Re8 
28.Rxe6 Rxe6 29.Re1 Be5 30.Rxe5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Reshevsky, Samuel Herman"]
[Black "Stein, Leonid"]
[Result "1/2-1/2"]
[ECO "A39"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O c5 6.d4 cxd4 7.Nxd4 Nc6 8.Nc3 
Nxd4 9.Qxd4 d6 10.Qd3 Be6 11.Bd2 Qd7 12.Rac1 Rac8 13.b3 Bh3 14.Nd5 Bxg2 
15.Kxg2 Nxd5 16.cxd5 Rxc1 17.Rxc1 Rc8 18.Rxc8+ Qxc8 19.h3 h5 20.e4 a6 21.
Qc4 Qxc4 22.bxc4 b5 23.cxb5 axb5 24.Kf3 Kf8 25.Ke3 Ke8 26.Kd3 Kd7 27.Be3 
Kc7 28.Kc2 Kb7 29.g4 hxg4 30.hxg4 Kc7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Rossetto, Hector Decio"]
[Black "Darga, Klaus"]
[Result "1/2-1/2"]
[ECO "E03"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4 5.Qa4+ Nbd7 6.Bg2 a6 7.Qxc4 b5 8.Qc6 
Rb8 9.Bf4 Nd5 10.Bd2 Bb7 11.Qc2 c5 12.O-O Rc8 13.Qd3 cxd4 14.Nxd4 Be7 15.
e3 O-O 16.Nc3 Nc5 17.Qb1 Nxc3 18.Bxc3 Bxg2 19.Kxg2 Qd5+ 20.f3 Na4 21.Be1 
Bf6 22.Bf2 Qc5 23.Rc1 Qxc1 24.Qxc1 Rxc1 25.Rxc1 Nxb2 26.Rc6 Ra8 27.e4 Nd3 
28.Nc2 b4 29.f4 Nxf2 30.Kxf2 a5 31.e5 Be7 32.Rc7 Bd8 33.Rb7 h5 34.Nd4 Rc8 
35.Ke2 g5 36.f5 exf5 37.Nxf5 Kf8 38.Kd3 Rc3+ 39.Ke4 Rc2 40.Nd6 Bc7 41.Nb5 
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.10"]
[Round "16"]
[White "Vranesic, Zvonko"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "A53"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.d4 Nf6 2.c4 d6 3.Nc3 c6 4.e4 e5 5.Nf3 Qa5 6.Bd2 Bg4 7.Nd5 Qd8 8.Nxf6+ 
Qxf6 9.Bc3 Nd7 10.Be2 Bxf3 11.Bxf3 Be7 12.O-O h5 13.a4 a5 14.Qd2 Qg5 15.
Rad1 Qxd2 16.Rxd2 Bg5 17.Rd3 Bf6 18.Rfd1 exd4 19.Bxd4 Bxd4 20.Rxd4 Nc5 21.
Rxd6 Nxa4 22.Be2 Nc5 23.e5 a4 24.f4 h4 25.Bg4 g6 26.Kf1 O-O 27.g3 hxg3 28.
hxg3 a3 29.bxa3 Rxa3 30.Kg2 Ne4 31.R6d3 Ra2+ 32.Kf3 Nc5 33.Rc3 Re8 34.Bh3 
Kg7 35.Rd4 Rh8 36.Bg4 Rh1 37.Bd7 Rf1+ 38.Kg4 Ra8 39.Rd6 Ne4 40.Rcd3 Nf2+ 
0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Bronstein, David"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1964.05.20"]
[PlyCount "44"]

1.Nf3 Nf6 2.b4 e6 3.a3 b6 4.g3 Bb7 5.Bg2 c5 6.bxc5 bxc5 7.c4 Nc6 8.O-O Be7
9.Nc3 O-O 10.d3 Rb8 11.Bf4 d6 12.Rb1 Ba8 13.Qa4 Qd7 14.Bg5 h6 15.Bxf6 Bxf6
16.Ne4 Bb2 17.Rfd1 f5 18.Ned2 Ne5 19.Qa5 Nc6 20.Qa4 Ne5 21.Qa5 Nc6 22.Qa4 
Ne5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Darga, Klaus"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "B73"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 g6 7.Be3 Bg7 8.O-O 
O-O 9.Qd2 Ng4 10.Bxg4 Bxg4 11.Kh1 Rc8 12.f4 Be6 13.f5 Bc4 14.Rf3 d5 15.e5 
Nxe5 16.Rg3 Ba6 17.Rd1 Nc4 18.Qc1 Nxe3 19.Qxe3 Qd7 20.Rh3 Rc4 21.Nce2 Ra4 
22.Ng3 Re8 23.b3 Rxa2 24.fxg6 fxg6 25.Ne6 d4 26.Qe4 Qc6 27.Qh4 Qxe6 28.
Qxh7+ Kf8 29.Nh5 gxh5 30.Rf3+ Qf6 31.Rxf6+ exf6 32.h4 Be2 33.Rxd4 Bg4 34.
Kg1 Ra1+ 35.Kh2 Rae1 36.Rxg4 hxg4 37.h5 Rh1+ 38.Kg3 Re5 39.Qd3 Rhxh5 40.
Qd8+ Kf7 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Foguelman, Alberto"]
[Black "Berger, Bela"]
[Result "0-1"]
[ECO "E04"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 dxc4 5.Bg2 Nbd7 6.O-O Rb8 7.a4 Bb4 8.Qc2 
O-O 9.Qxc4 a5 10.Na3 Nb6 11.Qc2 Bd7 12.b3 Bc6 13.Bf4 Rc8 14.Rfc1 Be4 15.
Qd1 Nbd5 16.Bd2 Qe7 17.Nc4 b6 18.Nfe5 Bxg2 19.Kxg2 c5 20.dxc5 Bxc5 21.Nd3 
Bd4 22.Ra2 Ne4 23.Rac2 f5 24.e3 Bf6 25.Qe2 e5 26.Be1 Ng5 27.h4 Qb7 28.f3 
Nxf3 29.Kf1 e4 30.Nf4 Nxf4 31.gxf4 Qf7 32.Nd6 Qg6 33.Bf2 Qg4 34.Qd1 Nh2+ 
35.Ke1 Nf3+ 36.Kf1 Nh2+ 37.Ke1 Qxd1+ 38.Kxd1 Rcd8 39.Rd2 Nf3 40.Rd5 Be7 
0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Gligoric, Svetozar"]
[Black "Benko, Pal"]
[Result "1/2-1/2"]
[ECO "B08"]
[EventDate "1964.05.20"]
[PlyCount "74"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O b6 7.Re1 Bb7 8.Bf1 c5 
9.d5 Na6 10.Bf4 Nc7 11.Qd2 a6 12.Bh6 b5 13.Bxg7 Kxg7 14.a3 e6 15.dxe6 Nxe6
16.Rad1 b4 17.Nd5 a5 18.Bc4 Bxd5 19.Bxd5 Nxd5 20.exd5 Nc7 21.Re4 Qf6 22.c3
bxc3 23.bxc3 Rfe8 24.Rxe8 Nxe8 25.c4 a4 26.Rb1 Ra7 27.h3 h6 28.Qc2 Kh7 29.
Nh2 Qd4 30.Rd1 Qf4 31.Ng4 Nf6 32.g3 Qf3 33.Rd3 Qf5 34.Qe2 Nxg4 35.hxg4 Qf6
36.Rf3 Qe7 37.Re3 Qf6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Pachman, Ludek"]
[Black "Bilek, Istvan"]
[Result "1-0"]
[ECO "B82"]
[EventDate "1964.05.20"]
[PlyCount "63"]

1.e4 c5 2.Nc3 Nc6 3.Nge2 d6 4.d4 cxd4 5.Nxd4 e6 6.Be3 Nf6 7.Bd3 Be7 8.f4 
Bd7 9.Qf3 Nxd4 10.Bxd4 Bc6 11.Rd1 Qa5 12.O-O Qb4 13.Ne2 d5 14.e5 Ne4 15.f5
Nd2 16.Rxd2 Qxd2 17.fxe6 f6 18.exf6 gxf6 19.Qh5+ Kd8 20.Nf4 Kc7 21.Nxd5+ 
Bxd5 22.Qxd5 Rad8 23.Qe4 Kb8 24.b3 Qg5 25.h4 Qh6 26.Be3 Qh5 27.Rf5 Qd1+ 
28.Kh2 Ka8 29.Rb5 Bd6+ 30.g3 Rb8 31.Ra5 Bxg3+ 32.Kg2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Porath, Yosef"]
[Black "Perez Perez, Francisco Jose"]
[Result "0-1"]
[ECO "E69"]
[EventDate "1964.05.20"]
[PlyCount "72"]

1.Nf3 g6 2.d4 Nf6 3.c4 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O Nbd7 7.Nc3 c6 8.e4 e5 
9.h3 Qe7 10.Be3 Ne8 11.Qd2 f5 12.Bg5 Qf7 13.exf5 gxf5 14.d5 c5 15.Bh6 e4 
16.Ne1 Ne5 17.b3 Qf6 18.Bxg7 Qxg7 19.Kh2 Nf6 20.f4 Nh5 21.Qe3 Nf3+ 22.Rxf3
exf3 23.Qxf3 Bd7 24.Nc2 Rae8 25.Re1 Rxe1 26.Nxe1 Re8 27.Nc2 Kh8 28.Nb5 
Bxb5 29.Qxh5 Bd7 30.Bf1 Qc3 31.Qd1 a6 32.Bd3 b5 33.Kg2 bxc4 34.bxc4 Ba4 
35.Qa1 Qxa1 36.Nxa1 Re3 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Quinones Carillo, Oscar"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "B41"]
[EventDate "1964.05.20"]
[PlyCount "112"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Bb4 7.Bd3 Nc6 8.Ne2 
Qc7 9.O-O Ng4 10.Bf4 Nge5 11.Kh1 O-O 12.Rc1 b6 13.Bb1 Bb7 14.a3 Bd6 15.Na4
Nxc4 16.Bxd6 Nxd6 17.Nxb6 Qxb6 18.Qxd6 Qxb2 19.Nc3 Rac8 20.Na4 Qd4 21.Qxd4
Nxd4 22.Nc5 Rc7 23.Nxb7 Rxb7 24.Rfd1 e5 25.Bd3 Ra7 26.Rc5 d6 27.Rd5 Rd8 
28.Rb1 Kf8 29.Rb6 a5 30.g3 Ke7 31.a4 Ne6 32.Bb5 g6 33.Kg2 Nc7 34.Rd3 Ne6 
35.Bc6 Nc5 36.Rf3 f6 37.Re3 Ra6 38.Rxa6 Nxa6 39.h4 h6 40.h5 g5 41.Kf3 Nb4 
42.Bb5 Rc8 43.Re2 Nc2 44.Kg4 d5 45.exd5 Nd4 46.Rb2 f5+ 47.Kh3 Rc2 48.Rxc2 
Nxc2 49.Kg2 Kd6 50.Bc4 e4 51.Kf1 Nb4 52.Ke2 Nxd5 53.Bb3 Kc5 54.f3 Kd4 55.
fxe4 fxe4 56.Bc2 Nf6 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Smyslov, Vassily"]
[Black "Lengyel, Levente"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "97"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.Nbd2 cxd4 13.cxd4 Nc6 14.Nb3 a5 15.Bd3 Ba6
16.Be3 a4 17.Nc1 exd4 18.Nxd4 Nxd4 19.Bxd4 Ne5 20.Bf1 Nc6 21.Be3 Bf6 22.
Nd3 Re8 23.Rc1 Bb7 24.f3 a3 25.b3 b4 26.Nf4 Bb2 27.Rc2 Bc3 28.Ree2 Ne7 29.
Bd4 Qa5 30.Bxc3 bxc3 31.Qc1 Rac8 32.Re3 d5 33.Rexc3 Qb6+ 34.Kh2 Rxc3 35.
Rxc3 dxe4 36.fxe4 Bxe4 37.Qxa3 Qf6 38.Qc1 g5 39.Nh5 Qe5+ 40.Kh1 h6 41.Ng3 
Nd5 42.Nxe4 Qxe4 43.Rf3 Ne3 44.Bb5 Re7 45.Qc8+ Kh7 46.Qc3 f5 47.Bd3 Qe6 
48.Qc5 Kg7 49.Bxf5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Spassky, Boris"]
[Black "Reshevsky, Samuel Herman"]
[Result "1-0"]
[ECO "D03"]
[EventDate "1964.05.20"]
[PlyCount "112"]

1.d4 Nf6 2.Nf3 e6 3.Bg5 Be7 4.Nbd2 d5 5.e3 Nbd7 6.Bd3 b6 7.c3 Bb7 8.Qc2 c5
9.O-O h6 10.Bh4 O-O 11.Rae1 c4 12.Be2 Qc7 13.Bg3 Bd6 14.Bxd6 Qxd6 15.e4 
Nxe4 16.Nxe4 dxe4 17.Nd2 b5 18.Nxe4 Qf4 19.Bf3 Rab8 20.Re3 Rfd8 21.Ng3 
Bxf3 22.Rxf3 Qh4 23.Re1 Nf6 24.Ne4 Nxe4 25.Rxe4 Qe7 26.a3 Rd5 27.h3 a5 28.
Rg3 Rbd8 29.Reg4 Rg5 30.Rxg5 hxg5 31.Qe2 Rd5 32.Re3 Qc7 33.Re4 a4 34.Qe3 
Qd6 35.g3 Qd8 36.Kg2 Rf5 37.f3 Rd5 38.Re5 Rxe5 39.Qxe5 Qd5 40.Kf2 Kh7 41.
Ke3 Kg6 42.Qe4+ f5 43.Qe5 Kf7 44.Qb8 Kf6 45.Qf8+ Kg6 46.Qe7 Qc6 47.Kf2 Qd5
48.h4 g4 49.Qg5+ Kf7 50.fxg4 Qe4 51.gxf5 Qc2+ 52.Ke3 Qc1+ 53.Ke4 Qe1+ 54.
Qe3 exf5+ 55.Kf4 Qb1 56.Qe2 g6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Stein, Leonid"]
[Black "Evans, Larry Melvyn"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "69"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Nb8 10.d3 c5 11.Nbd2 Qc7 12.Bc2 Nc6 13.Nf1 d5 14.Ne3 dxe4 15.dxe4 Rd8
16.Qe2 g6 17.a4 Rb8 18.axb5 axb5 19.Ng5 h6 20.Nd5 Nxd5 21.exd5 hxg5 22.
dxc6 Qxc6 23.Qxe5 Bb7 24.Qg3 Qf6 25.Rxe7 Qxe7 26.Bxg5 f6 27.Bf4 Ra8 28.
Rxa8 Bxa8 29.Bxg6 Qg7 30.Be3 c4 31.Bf7+ Kxf7 32.Qc7+ Kg6 33.Qxd8 Bc6 34.
Bd4 Qf7 35.Qd6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Tal, Mikhail"]
[Black "Vranesic, Zvonko"]
[Result "1-0"]
[ECO "B84"]
[EventDate "1964.05.20"]
[PlyCount "59"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Be2 b5 7.a3 Bb7 8.f4 d6 
9.O-O Nf6 10.Bf3 Nbd7 11.Qe2 h6 12.Kh1 e5 13.fxe5 dxe5 14.Nd5 Qc4 15.Qxc4 
bxc4 16.Nf5 Nxd5 17.exd5 g6 18.Ne3 Nb6 19.Bd2 Rc8 20.Rae1 Bg7 21.Ba5 Nd7 
22.Be2 O-O 23.Bxc4 e4 24.d6 Ne5 25.Bb3 Kh7 26.Bc7 f5 27.Bd5 Bxd5 28.Nxd5 
Nd7 29.b4 Be5 30.c4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.11"]
[Round "17"]
[White "Tringov, Georgi"]
[Black "Rossetto, Hector Decio"]
[Result "1-0"]
[ECO "C56"]
[EventDate "1964.05.20"]
[PlyCount "53"]

1.e4 Nc6 2.d4 e5 3.Nf3 exd4 4.Bc4 Nf6 5.O-O Nxe4 6.Re1 d5 7.Bxd5 Qxd5 8.
Nc3 Qd8 9.Rxe4+ Be6 10.Nxd4 Nxd4 11.Rxd4 Qc8 12.Bg5 Bd6 13.Ne4 O-O 14.Nf6+
gxf6 15.Bxf6 Rd8 16.Qh5 Kf8 17.Qxh7 Ke8 18.Rad1 a5 19.c4 b6 20.f4 a4 21.f5
Bxc4 22.Bxd8 Qxd8 23.Qh8+ Ke7 24.Re4+ Be6 25.Qh4+ Kf8 26.Qh6+ Ke8 27.Rde1 
1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Benko, Pal"]
[Black "Porath, Yosef"]
[Result "1-0"]
[ECO "A34"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.c4 Nf6 2.g3 e6 3.Bg2 d5 4.Nf3 c5 5.cxd5 Nxd5 6.O-O Be7 7.Nc3 Nc6 8.Nxd5 
Qxd5 9.d4 Nxd4 10.Nxd4 Qxd4 11.Qc2 O-O 12.Be3 Qf6 13.Be4 h6 14.Bxc5 e5 15.
Rfc1 Bxc5 16.Qxc5 Bg4 17.Qe3 Qg5 18.Qxg5 hxg5 19.Bxb7 Rab8 20.Rc7 Rfd8 21.
f3 Be6 22.b3 g4 23.fxg4 Rd2 24.Ba6 Bxg4 25.Kf2 Rb6 26.Bc4 Rf6+ 27.Ke3 Rd7 
28.Rxd7 Bxd7 29.Rd1 Bc6 30.Rd8+ Kh7 31.Rc8 a6 32.Bxa6 Bd7 33.Bd3+ Bf5 34.
Rc5 Bxd3 35.exd3 Rh6 36.Rxe5 Rxh2 37.a4 Rg2 38.Kf3 Rb2 39.Rb5 Rd2 40.Ke4 
Rg2 41.a5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Berger, Bela"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "E69"]
[EventDate "1964.05.20"]
[PlyCount "88"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O e5 8.e4 c6 
9.h3 Qb6 10.Rb1 Qb4 11.dxe5 Nxe5 12.Nxe5 dxe5 13.Qd3 Nd7 14.Be3 Re8 15.Ne2
Nc5 16.Qc3 Qxc3 17.Nxc3 Ne6 18.Rfc1 Nd4 19.Bf1 f5 20.Kg2 Be6 21.f3 Rad8 
22.Ne2 Rd7 23.Bg5 h6 24.Be3 h5 25.Bg5 fxe4 26.fxe4 Kh7 27.Nxd4 exd4 28.Bd3
Bh6 29.Bxh6 Kxh6 30.Rf1 Kg7 31.h4 c5 32.a4 a5 33.b3 Bf7 34.Rf4 Re5 35.Rbf1
Rde7 36.g4 g5 37.hxg5 Rxg5 38.Rf5 Rxg4+ 39.Kh2 b6 40.Rg1 Rxg1 41.Kxg1 Bg6 
42.Rd5 Bxe4 43.Bxe4 Rxe4 44.Rd6 Rg4+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Bilek, Istvan"]
[Black "Foguelman, Alberto"]
[Result "1-0"]
[ECO "C00"]
[EventDate "1964.05.20"]
[PlyCount "88"]

1.e4 e6 2.Nc3 d5 3.Nf3 Nf6 4.e5 Ne4 5.Ne2 Bc5 6.d4 Be7 7.Ng3 c5 8.Qd3 f5 
9.exf6 Nxf6 10.dxc5 Qa5+ 11.c3 Qxc5 12.Be2 Nc6 13.O-O O-O 14.Be3 Qd6 15.
Nd4 Ne5 16.Qd2 Neg4 17.Bg5 Ne4 18.Bxe7 Qxe7 19.Nxe4 e5 20.Bxg4 Bxg4 21.Ng3
exd4 22.Qxd4 Qd7 23.f3 Be6 24.Rfe1 Rfc8 25.Rad1 Qf7 26.a3 Rc4 27.Qe5 Re8 
28.Nf5 Bd7 29.Qxe8+ Qxe8 30.Rxe8+ Bxe8 31.Nd6 Ba4 32.Rxd5 Rc7 33.Rd4 Bc6 
34.Kf2 g6 35.Nc4 Kf8 36.Ne5 Be8 37.h4 Re7 38.f4 b6 39.g4 Rb7 40.Ke3 a5 41.
Rd8 Ke7 42.Ra8 Bb5 43.c4 Be8 44.b3 Rc7 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Evans, Larry Melvyn"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "D58"]
[EventDate "1964.05.20"]
[PlyCount "62"]

1.c4 e6 2.Nc3 Nf6 3.Nf3 d5 4.d4 Be7 5.Bg5 h6 6.Bh4 O-O 7.e3 b6 8.cxd5 Nxd5
9.Bg3 c5 10.Bd3 cxd4 11.exd4 Bb7 12.O-O Nd7 13.Rc1 N7f6 14.Re1 Rc8 15.Ne5 
Nxc3 16.bxc3 Qd5 17.Bf1 Ne4 18.c4 Qd8 19.Qd3 Nxg3 20.hxg3 Bd6 21.Qe3 Rc7 
22.c5 Bxe5 23.dxe5 Bd5 24.cxb6 Rxc1 25.Rxc1 Qxb6 26.Qxb6 axb6 27.a4 Bb3 
28.Bb5 Rd8 29.Rc6 Ra8 30.Rxb6 Bxa4 31.Bxa4 Rxa4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Ivkov, Borislav"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "A37"]
[EventDate "1964.05.20"]
[PlyCount "55"]

1.Nf3 c5 2.c4 Nc6 3.g3 g6 4.Bg2 Bg7 5.O-O e6 6.Nc3 Nge7 7.b3 d5 8.cxd5 
exd5 9.Bb2 b6 10.d4 Nxd4 11.Nxd4 Bxd4 12.Nxd5 Bxb2 13.Nxe7 Qxe7 14.Bxa8 
Bxa1 15.Bc6+ Bd7 16.Qxa1 O-O 17.Bxd7 Qxd7 18.Rd1 Qe7 19.e3 h6 20.h4 Rd8 
21.Rxd8+ Qxd8 22.Qe5 a5 23.Qe4 Qd2 24.Qe8+ Kg7 25.Qe5+ Kg8 26.Qe8+ Kg7 27.
Qe5+ Kg8 28.Qe8+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Larsen, Bent"]
[Black "Tringov, Georgi"]
[Result "1/2-1/2"]
[ECO "B50"]
[EventDate "1964.05.20"]
[PlyCount "113"]

1.e4 c5 2.Nf3 d6 3.Nc3 Nf6 4.e5 dxe5 5.Nxe5 Nbd7 6.Nc4 Nb6 7.Nxb6 Qxb6 8.
Bb5+ Bd7 9.Bxd7+ Nxd7 10.O-O e6 11.Re1 Be7 12.Qg4 O-O 13.d3 Nf6 14.Qg3 
Rfe8 15.b3 Bd6 16.Qf3 Nd5 17.Bb2 Nxc3 18.Bxc3 Bf8 19.h4 Red8 20.Re5 f6 21.
Re2 e5 22.a4 Qc7 23.h5 Qf7 24.Re3 b6 25.Qg4 a6 26.Rf3 Re8 27.Qf5 Qe6 28.h6
Qxf5 29.Rxf5 Kf7 30.hxg7 Bxg7 31.Re1 b5 32.Re4 c4 33.bxc4 bxc4 34.d4 exd4 
35.Rxd4 Rac8 36.Rff4 Rc6 37.Kf1 h5 38.Rxc4 Rec8 39.Rxc6 Rxc6 40.Rf3 Rc4 
41.a5 h4 42.Ke2 Rg4 43.Rh3 Bf8 44.g3 hxg3 45.fxg3 Kg7 46.Kd3 Bd6 47.Be1 
Bc7 48.c4 Rg5 49.Kd4 Bxa5 50.Bxa5 Rxa5 51.c5 Kf7 52.Kd5 Ra3 53.c6 Ke7 54.
Rh7+ Kd8 55.g4 Ra4 56.Rg7 a5 57.Rg6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Lengyel, Levente"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "A07"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.d3 Nd7 5.h3 Bh5 6.c4 e6 7.cxd5 cxd5 8.Nc3 Ne7
9.O-O Nc6 10.Bf4 Be7 11.g4 Bg6 12.e4 d4 13.Ne2 e5 14.Bg3 h5 15.g5 Bxg5 16.
Qb3 Rb8 17.Nxg5 Qxg5 18.f4 Qe7 19.fxe5 Ndxe5 20.Nf4 Qg5 21.Nxg6 Qxg6 22.
Bxe5 Nxe5 23.Rf5 Nc6 24.Qa3 Qe6 25.Raf1 f6 26.Qc5 Qe7 27.Qc4 Qf7 28.Qc5 
Qe7 29.Qc4 Qf7 30.Qc5 Qe7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Portisch, Lajos"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "E90"]
[EventDate "1964.05.20"]
[PlyCount "65"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Bg5 h6 7.Bf4 e5 8.dxe5 Nh5 
9.g3 Nc6 10.exd6 Nxf4 11.gxf4 cxd6 12.Bg2 Na5 13.Rc1 Nxc4 14.b3 Qa5 15.Qd3
Nb2 16.Qd2 Bg4 17.Qxb2 Rac8 18.e5 Bxf3 19.Bxf3 Qb4 20.Qd2 dxe5 21.Ne2 
Rxc1+ 22.Nxc1 Qb5 23.Ne2 exf4 24.O-O Re8 25.Rd1 Qg5+ 26.Kh1 Qh4 27.Ng1 Bf6
28.Bxb7 Rd8 29.Bd5 Qh5 30.Qd3 g5 31.f3 Kg7 32.Qf5 Qh4 33.Rc1 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Quinones Carillo, Oscar"]
[Black "Darga, Klaus"]
[Result "0-1"]
[ECO "B03"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 g6 6.Be2 Bg7 7.Nf3 O-O 8.Be3 dxe5 
9.fxe5 Bg4 10.Nbd2 c5 11.dxc5 N6d7 12.O-O Qc7 13.Qe1 Nc6 14.Qh4 Bxf3 15.
Nxf3 Ncxe5 16.Ng5 h6 17.Ne4 f5 18.Nc3 g5 19.Qh3 e6 20.Nb5 Qd8 21.Rad1 Qe7 
22.Nd6 b6 23.cxb6 axb6 24.a3 g4 25.Qg3 h5 26.Qe1 Ng6 27.Qb4 Nc5 28.Qd2 
Rfd8 29.Bxc5 bxc5 30.Kh1 Bf8 31.Qe3 Rxd6 32.Rxd6 Qxd6 33.Qg5 Kg7 34.Rd1 
Qe7 35.Qd2 Kh7 36.Bd3 Bg7 37.Qc2 Rb8 38.b3 Qf6 39.Rb1 Qc3 40.Bxf5 exf5 41.
Qxf5 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Reshevsky, Samuel Herman"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[ECO "D13"]
[EventDate "1964.05.20"]
[PlyCount "40"]

1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nf3 Nf6 5.Nc3 Nc6 6.Bf4 e6 7.e3 Bd6 8.Bxd6 
Qxd6 9.Bd3 O-O 10.O-O Re8 11.Rc1 Bd7 12.h3 h6 13.Qe2 Rac8 14.a3 a6 15.Rc2 
Rc7 16.Rfc1 Rec8 17.Kh1 Be8 18.Kg1 Bd7 19.Kh1 Be8 20.Kg1 Bd7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Rossetto, Hector Decio"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "B12"]
[EventDate "1964.05.20"]
[PlyCount "86"]

1.e4 c6 2.Ne2 d5 3.e5 c5 4.d4 Nc6 5.c3 Bf5 6.Ng3 Bg6 7.dxc5 e6 8.Be3 Nxe5 
9.f4 Nc6 10.Bd3 Bxd3 11.Qxd3 Nf6 12.Nd2 Be7 13.O-O a5 14.Nf3 Nd7 15.Qb5 
Qc7 16.f5 O-O 17.Kh1 Nd8 18.b4 Bf6 19.Bd4 e5 20.Bg1 e4 21.Nd4 axb4 22.cxb4
Nc6 23.Nge2 Ra3 24.Nc2 Na7 25.Nxa3 Nxb5 26.Nxb5 Qc6 27.Ned4 Bxd4 28.Nxd4 
Qa4 29.a3 Rc8 30.Rfc1 f6 31.Rc3 Ne5 32.h3 Nd3 33.Rb1 g6 34.Be3 Qe8 35.Rf1 
Kf7 36.Kg1 Qe5 37.Nb5 Kg7 38.Bd4 Qg3 39.Nd6 Rf8 40.fxg6 hxg6 41.Nxb7 Qg5 
42.c6 Qd2 43.Kh1 e3 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.12"]
[Round "18"]
[White "Vranesic, Zvonko"]
[Black "Stein, Leonid"]
[Result "0-1"]
[ECO "E82"]
[EventDate "1964.05.20"]
[PlyCount "68"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.f3 d6 6.Be3 b6 7.Bd3 Bb7 8.Nge2 c5 
9.d5 e6 10.Qd2 exd5 11.cxd5 Nbd7 12.Ng3 Re8 13.Be2 a6 14.a4 h5 15.Bg5 h4 
16.Nf1 Nf8 17.Qc2 h3 18.g4 N8h7 19.Be3 Rb8 20.Rd1 Bc8 21.Ng3 Nd7 22.O-O 
Ne5 23.Rb1 b5 24.axb5 axb5 25.Nxb5 Ba6 26.Na3 Bxe2 27.Qxe2 Rb3 28.Bd2 Ng5 
29.Bxg5 Qxg5 30.Nc4 Nxc4 31.Qxc4 Reb8 32.Qc1 Qxc1 33.Rbxc1 Rxb2 34.Rfd1 
Rg2+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Bronstein, David"]
[Black "Larsen, Bent"]
[Result "0-1"]
[ECO "E75"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 e6 8.Nf3 h6 9.
Bf4 exd5 10.exd5 Re8 11.Nd2 Nh5 12.Bg3 Bg4 13.O-O Nxg3 14.hxg3 Bxe2 15.
Nxe2 Bxb2 16.Rb1 Bg7 17.Rxb7 Nd7 18.Nf4 Nb6 19.Re1 Bc3 20.Ne4 Bxe1 21.Ne6 
Bxf2+ 22.Kxf2 fxe6 23.Qg4 Rf8+ 24.Kg1 Rf6 25.Qh3 Qf8 26.Ng5 Rf1+ 27.Kh2 
Rf5 28.Nxe6 Rh5 29.Qxh5 gxh5 30.Nxf8 Rxf8 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Darga, Klaus"]
[Black "Portisch, Lajos"]
[Result "1-0"]
[ECO "D32"]
[EventDate "1964.05.20"]
[PlyCount "69"]

1.Nf3 Nf6 2.c4 e6 3.d4 c5 4.e3 d5 5.Nc3 a6 6.cxd5 exd5 7.Be2 Nc6 8.O-O c4 
9.Ne5 Qc7 10.Nxc6 Qxc6 11.e4 Nxe4 12.Nxe4 dxe4 13.d5 Qg6 14.Re1 Bf5 15.Bh5
Qf6 16.f3 Bc5+ 17.Kh1 Qe5 18.fxe4 Bg6 19.Bf3 O-O 20.g3 b5 21.Qe2 f6 22.Bf4
Qe8 23.Rac1 Bd4 24.b3 cxb3 25.axb3 Be5 26.Rc6 Qb8 27.Qe3 Re8 28.d6 Qa7 29.
Qxa7 Rxa7 30.Rc7 Raa8 31.Bxe5 fxe5 32.d7 Rf8 33.Bg4 Rad8 34.Rc8 a5 35.Kg1 
1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Foguelman, Alberto"]
[Black "Lengyel, Levente"]
[Result "1/2-1/2"]
[ECO "B43"]
[EventDate "1964.05.20"]
[PlyCount "34"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.g3 Nf6 7.Bg2 Nc6 8.Nde2 
Be7 9.O-O O-O 10.h3 Rd8 11.g4 d5 12.exd5 Nb4 13.Bf4 Bd6 14.Bg5 Be7 15.Bf4 
Bd6 16.Bg5 Be7 17.Bf4 Bd6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Gligoric, Svetozar"]
[Black "Bilek, Istvan"]
[Result "1-0"]
[ECO "B06"]
[EventDate "1964.05.20"]
[PlyCount "115"]

1.e4 d6 2.d4 g6 3.Nc3 Bg7 4.f4 c6 5.Nf3 Bg4 6.Be2 e6 7.O-O Bxf3 8.Bxf3 d5 
9.e5 h5 10.Qd3 Nh6 11.Nd1 Nf5 12.Ne3 Nd7 13.Nxf5 gxf5 14.b3 Bf8 15.c4 Nb6 
16.a4 a5 17.Bd2 h4 18.Rfb1 Be7 19.c5 Nd7 20.b4 axb4 21.Bxb4 Ra7 22.a5 Qa8 
23.Be2 Nb8 24.Bd2 Bd8 25.Qc3 Kd7 26.Rb3 Kc8 27.Qb2 Na6 28.Rb1 Nb8 29.Ra3 
Na6 30.Qb3 Bc7 31.g4 hxg3 32.hxg3 Kd7 33.Kg2 Qg8 34.Raa1 Nb8 35.Rh1 Rxh1 
36.Rxh1 Kc8 37.Qa3 Nd7 38.Ra1 Kd8 39.Qf3 Nf8 40.Kf2 Ng6 41.Rb1 Kd7 42.Qh1 
Ne7 43.Rb3 Qa8 44.Qh7 Bxa5 45.Bxa5 Rxa5 46.Qxf7 Ra2 47.Qh5 Kc7 48.Re3 Kd7 
49.Rd3 Ra3 50.Qf3 Rxd3 51.Qxd3 Qa1 52.Qd2 Qb1 53.Kg2 Ng8 54.Bd3 Qb3 55.g4 
Nh6 56.gxf5 Nxf5 57.Bxf5 exf5 58.Qe2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Pachman, Ludek"]
[Black "Reshevsky, Samuel Herman"]
[Result "1/2-1/2"]
[ECO "D40"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.e3 c5 5.Nc3 Nc6 6.a3 a6 7.dxc5 Bxc5 8.b4 Bd6 
9.Bb2 dxc4 10.Bxc4 b5 11.Bd3 Bb7 12.Ne4 Be7 13.Rb1 O-O 14.O-O Nxe4 15.Bxe4
Qxd1 16.Rfxd1 Rfd8 17.Kf1 f5 18.Bc2 Rxd1+ 19.Rxd1 Rd8 20.Rxd8+ Bxd8 21.Bb3
Kf7 22.Nd4 Nxd4 23.Bxd4 Bf6 24.Bxf6 Kxf6 25.f4 e5 26.g3 h6 27.Ke2 g5 28.
Kf2 Bc6 29.h4 gxh4 30.gxh4 Bb7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Perez Perez, Francisco Jose"]
[Black "Benko, Pal"]
[Result "1/2-1/2"]
[ECO "A08"]
[EventDate "1964.05.20"]
[PlyCount "77"]

1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 g6 5.Nbd2 d5 6.Bg2 Bg7 7.O-O Nge7 8.Re1 O-O
9.c3 b6 10.e5 Qc7 11.Qe2 Ba6 12.h4 Kh8 13.Nf1 Ng8 14.N1h2 Rae8 15.Bf4 Qd8 
16.Ng4 h5 17.Ngh2 f5 18.Qd2 d4 19.c4 b5 20.b3 bxc4 21.dxc4 Bb7 22.Re2 a5 
23.Ne1 Qb6 24.Nd3 Nb4 25.Bxb7 Nxd3 26.Qxd3 Qxb7 27.Nf3 Ne7 28.Ne1 Nc6 29.
Qf3 Rf7 30.Nd3 Nd8 31.Qxb7 Nxb7 32.a4 Bf8 33.Bd2 Kg8 34.f4 Ra8 35.Be1 Nd8 
36.Rb1 Rb7 37.Kg2 Nc6 38.Kf3 Rab8 39.Reb2 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Porath, Yosef"]
[Black "Berger, Bela"]
[Result "1/2-1/2"]
[ECO "E60"]
[EventDate "1964.05.20"]
[PlyCount "84"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.d5 cxd5 5.cxd5 d6 6.Nc3 Bg7 7.Bg2 O-O 8.Nf3 Bg4
9.Nd4 Na6 10.h3 Bd7 11.Be3 Ne8 12.O-O Nec7 13.Rb1 Qe8 14.Qd2 Nb5 15.Ncxb5 
Bxb5 16.Rfc1 Bd7 17.b4 Rc8 18.Nb3 Rxc1+ 19.Rxc1 Qb8 20.Bd4 Rc8 21.a3 Rxc1+
22.Qxc1 Bxd4 23.Nxd4 Qc7 24.Qe3 Ba4 25.h4 Qd7 26.Nf3 Nc7 27.Qxa7 Nxd5 28.
Nd4 Nc3 29.Qxb7 Qxb7 30.Bxb7 e5 31.Nc6 Nxe2+ 32.Kf1 Nc3 33.Ne7+ Kf8 34.Nc8
d5 35.Nb6 Bb5+ 36.Kg1 d4 37.Bd5 Ke7 38.Bb3 f5 39.a4 Bc6 40.a5 Bb5 41.Nd5+ 
Nxd5 42.Bxd5 h6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Smyslov, Vassily"]
[Black "Evans, Larry Melvyn"]
[Result "1-0"]
[ECO "B92"]
[EventDate "1964.05.20"]
[PlyCount "77"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O 
O-O 9.Be3 Qc7 10.a4 Nbd7 11.a5 b5 12.axb6 Nxb6 13.Qd3 Be6 14.Bxb6 Qxb6 15.
Rxa6 Rxa6 16.Qxa6 Qxa6 17.Bxa6 Rb8 18.Rb1 Bxb3 19.cxb3 Rxb3 20.Bc4 Rb8 21.
b3 Bd8 22.f3 Ba5 23.Nb5 d5 24.exd5 Nxd5 25.Nd6 Bb6+ 26.Kf1 Ne3+ 27.Ke2 
Nxg2 28.Nxf7 Kf8 29.Kd3 Rb7 30.Nxe5 Re7 31.Nc6 Re3+ 32.Kd2 Rxf3 33.Ra1 g6 
34.Ne5 Be3+ 35.Kd3 Rh3 36.Ke4 Kg7 37.Nf3 Bf4 38.Bf1 Bxh2 39.Bxg2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Spassky, Boris"]
[Black "Vranesic, Zvonko"]
[Result "1-0"]
[ECO "B82"]
[EventDate "1964.05.20"]
[PlyCount "61"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Bd3 Nc6 7.Nb3 b5 8.f4 Bb7
9.Be3 d6 10.O-O Nf6 11.Qf3 Nb4 12.Qg3 d5 13.e5 Ne4 14.Bxe4 dxe4 15.Rac1 
Rd8 16.f5 exf5 17.Rxf5 Rd7 18.a3 g6 19.e6 fxe6 20.Qxc7 Rxc7 21.Rxf8+ Rxf8 
22.axb4 Bd5 23.Nc5 Rc6 24.Ra1 Ke7 25.N3xe4 Bxe4 26.Nxe4 Ra8 27.Bc5+ Kd8 
28.Rf1 Rac8 29.Rf7 h5 30.Nf6 Rb8 31.Ba7 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Stein, Leonid"]
[Black "Ivkov, Borislav"]
[Result "1-0"]
[ECO "C98"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6 13.d5 Nd8 14.a4 Rb8 15.c4 Bd7 16.
axb5 axb5 17.cxb5 Bxb5 18.Ba4 Ra8 19.Re3 Nb7 20.Rea3 Bxa4 21.Rxa4 Rxa4 22.
Qxa4 Rc8 23.b3 Nd8 24.Bb2 h6 25.Bc3 Qb7 26.Ne1 Rb8 27.Nc2 Nd7 28.Ne3 Nb6 
29.Qe8+ Bf8 30.Nf5 Qd7 31.Nxd6 Qxe8 32.Nxe8 Rb7 33.Bxe5 f6 34.Bg3 Nf7 35.
Nc7 Bd6 36.Bxd6 Nxd6 37.Ne6 c4 38.bxc4 Nbxc4 39.Nxc4 Nxc4 40.f4 Rb2 41.
Ra8+ 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Tal, Mikhail"]
[Black "Rossetto, Hector Decio"]
[Result "1/2-1/2"]
[ECO "C43"]
[EventDate "1964.05.20"]
[PlyCount "90"]

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 d5 6.exd6 Nxd6 7.Nc3 Nc6 8.Qf4
Be6 9.Bd3 g6 10.Bd2 Bg7 11.O-O-O Qf6 12.Qxf6 Bxf6 13.Ng5 O-O-O 14.Nxe6 
fxe6 15.Rhe1 Rhe8 16.Ne4 Nxe4 17.Rxe4 Rd4 18.Rde1 Rxe4 19.Rxe4 a6 20.g3 
Kd7 21.h4 Bd4 22.Re2 Rf8 23.Be1 Bg7 24.Be4 Bh6+ 25.Bd2 Nd4 26.Re1 Bxd2+ 
27.Kxd2 Nf3+ 28.Bxf3 Rxf3 29.Ke2 Rf5 30.Rd1+ Rd5 31.Rd3 Ke7 32.Rc3 Kd6 33.
Rb3 Re5+ 34.Kf3 Rf5+ 35.Kg2 b6 36.g4 Rc5 37.Rd3+ Rd5 38.Re3 Rd4 39.Kg3 e5 
40.g5 a5 41.Rf3 Ke7 42.Rc3 Kd6 43.b3 Kd7 44.Rf3 Ke7 45.Rf6 Rd6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.15"]
[Round "19"]
[White "Tringov, Georgi"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "B42"]
[EventDate "1964.05.20"]
[PlyCount "47"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be3 Nf6 6.Bd3 Nc6 7.O-O Qc7 8.Nd2 
Be7 9.Nxc6 bxc6 10.f4 d6 11.Qf3 Bb7 12.Qg3 c5 13.c4 Nd7 14.Qxg7 Bf6 15.Qh6
O-O-O 16.Rab1 Rdg8 17.Qh3 Rg7 18.Rfe1 Rhg8 19.Bf1 Rg4 20.g3 Bd4 21.Bg2 Nb8
22.Bxd4 cxd4 23.Nb3 R4g7 24.f5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Berger, Bela"]
[Black "Perez Perez, Francisco Jose"]
[Result "0-1"]
[ECO "B42"]
[EventDate "1964.05.20"]
[PlyCount "54"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Bc5 6.Nb3 Ba7 7.c4 Nc6 8.O-O 
Nge7 9.Nc3 Ne5 10.Kh1 Qc7 11.Qe2 O-O 12.f4 Nxd3 13.Qxd3 f5 14.Bd2 b6 15.
Nd4 Bb7 16.Rac1 Rac8 17.b3 b5 18.cxb5 Qd6 19.Be3 fxe4 20.Qd1 Bxd4 21.Qxd4 
Qxd4 22.Bxd4 Nf5 23.Rfd1 axb5 24.Nxb5 Rxc1 25.Rxc1 Bc6 26.g4 e3+ 27.Kg1 
Nh4 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Bilek, Istvan"]
[Black "Porath, Yosef"]
[Result "1-0"]
[ECO "B14"]
[EventDate "1964.05.20"]
[PlyCount "89"]

1.e4 c6 2.c4 d5 3.exd5 cxd5 4.d4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.cxd5 exd5 8.Bb5+
Nc6 9.Bxc6+ bxc6 10.Ne5 Bb7 11.O-O O-O 12.Na4 Rc8 13.Bg5 h6 14.Bxf6 Bxf6 
15.Nc5 Rc7 16.Re1 Re8 17.Rc1 Bc8 18.Qa4 Bxe5 19.dxe5 d4 20.Rcd1 Qd5 21.
Qxd4 Qxa2 22.b3 Rce7 23.f4 Be6 24.Qc3 Rb8 25.Ra1 Rxb3 26.Qd4 Qc2 27.Nxb3 
Rd7 28.Qe3 Qxb3 29.Qxb3 Bxb3 30.Kf2 c5 31.Ra5 c4 32.Rc5 g6 33.e6 fxe6 34.
Rxe6 Kh7 35.Rec6 Kg7 36.Rc7 Rxc7 37.Rxc7+ Kf6 38.Rxa7 h5 39.Ke3 Bc2 40.Rc7
Bd3 41.Rc5 Ke6 42.Kd4 Bf1 43.g3 Bd3 44.Re5+ Kf6 45.Ra5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Darga, Klaus"]
[Black "Tringov, Georgi"]
[Result "1/2-1/2"]
[ECO "D32"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.Nf3 c5 2.c4 Nc6 3.Nc3 Nf6 4.e3 e6 5.d4 d5 6.cxd5 exd5 7.Be2 a6 8.O-O Bd6
9.dxc5 Bxc5 10.b3 O-O 11.Bb2 Be6 12.Rc1 Qe7 13.Na4 Bd6 14.Nd4 Ne5 15.f4 
Neg4 16.Qd3 Rae8 17.h3 Nh6 18.Bf3 Ba3 19.Rc7 Qxc7 20.Bxa3 Bd7 21.Rc1 Qa5 
22.Bxf8 Kxf8 23.Nc5 Bc8 24.a4 Qd8 25.b4 Qe7 26.a5 Nf5 27.Re1 Nd6 28.Re2 g6
29.Qc3 Kg8 30.Qd3 Kg7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Evans, Larry Melvyn"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]
[ECO "B85"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Nc3 Qc7 7.O-O Nc6 8.Be3 
Be7 9.f4 d6 10.Qe1 O-O 11.Qg3 Nxd4 12.Bxd4 b5 13.a3 Bb7 14.Kh1 Rfd8 15.
Rae1 Ne8 16.Bd3 Bf8 17.e5 g6 18.f5 exf5 19.Bxf5 dxe5 20.Bxe5 Bd6 21.Bxd6 
Nxd6 22.Be4 Rac8 23.Bd5 Rd7 24.Rf6 Re8 25.Rxg6+ hxg6 26.Qxg6+ Kf8 27.Qh6+ 
Kg8 28.Qg6+ Kf8 29.Qh6+ Kg8 30.Qg6+ Kf8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Ivkov, Borislav"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "C64"]
[EventDate "1964.05.20"]
[PlyCount "62"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nd4 5.Nxd4 Bxd4 6.c3 Bb6 7.d4 c6 8.Bc4 
d6 9.dxe5 dxe5 10.Qxd8+ Bxd8 11.Be3 Nf6 12.f3 Bb6 13.Kf2 Ke7 14.Nd2 Bxe3+ 
15.Kxe3 Be6 16.Rfd1 Rhd8 17.Bxe6 Kxe6 18.Nb3 b6 19.a4 a5 20.Rd2 Rd7 21.
Rad1 Rad8 22.g3 Rxd2 23.Rxd2 Rxd2 24.Nxd2 Nd7 25.Nc4 f6 26.b4 axb4 27.cxb4
b5 28.axb5 cxb5 29.Na3 Nb8 30.Kd3 Na6 31.Ke3 Nc7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Larsen, Bent"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "B02"]
[EventDate "1964.05.20"]
[PlyCount "61"]

1.e4 c5 2.f4 Nf6 3.d3 d5 4.e5 Ng8 5.Nf3 Bg4 6.Be2 e6 7.O-O Ne7 8.c4 Nbc6 
9.Nc3 dxc4 10.dxc4 Nf5 11.Qa4 Nd4 12.Nxd4 Qxd4+ 13.Rf2 Bxe2 14.Nxe2 Qd3 
15.f5 Be7 16.Nf4 Qe4 17.fxe6 fxe6 18.Bd2 O-O 19.Re1 Qf5 20.Qb3 Rad8 21.Nh3
Qg4 22.Qxb7 Bh4 23.Qxc6 Bxf2+ 24.Nxf2 Rxf2 25.Kxf2 Rxd2+ 26.Kg1 h6 27.h3 
Qxc4 28.b3 Qd4+ 29.Kh1 Qd5 30.Qxd5 exd5 31.Rc1 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Lengyel, Levente"]
[Black "Gligoric, Svetozar"]
[Result "0-1"]
[ECO "E69"]
[EventDate "1964.05.20"]
[PlyCount "128"]

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O Nbd7 7.Nc3 e5 8.e4 c6 
9.h3 Qb6 10.Re1 Re8 11.d5 c5 12.a3 Qd8 13.Nb5 Nf8 14.b4 a6 15.Nc3 N6d7 16.
Qc2 Qc7 17.Bf1 b6 18.Nd2 Nf6 19.Rb1 Bd7 20.Bb2 Nh5 21.Qd1 Rab8 22.Ba1 Bh6 
23.b5 a5 24.Kh2 Qd8 25.Bg2 Bc8 26.Rf1 Rb7 27.Ne2 f5 28.Rb3 Rf7 29.Bb2 f4 
30.g4 Nf6 31.Ng1 g5 32.Ngf3 Ng6 33.Rh1 Nxg4+ 34.hxg4 Bxg4 35.Qc2 Bc8 36.
Kg1 Bg7 37.Rh5 Bf6 38.Nh2 Nh4 39.Qd1 Nxg2 40.Kxg2 g4 41.f3 gxf3+ 42.Kxf3 
Rg7 43.Qh1 Rf8 44.Ke2 Qe8 45.Nhf3 Qf7 46.Rc3 Rg3 47.Rc1 Bg4 48.Rh6 Qg7 49.
Rf1 Be7 50.Kd1 Rf6 51.Rxf6 Bxf6 52.Kc1 h5 53.Rf2 Qg6 54.Nh4 Qh7 55.Rh2 f3 
56.Qe1 Bxh4 57.Rxh4 Rg2 58.Qe3 Qg6 59.Bc3 Re2 60.Qd3 f2 61.Rh2 Qg5 62.Kb1 
Qxd2 63.Bxd2 f1=Q+ 64.Kb2 a4 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Portisch, Lajos"]
[Black "Benko, Pal"]
[Result "1-0"]
[ECO "D92"]
[EventDate "1964.05.20"]
[PlyCount "61"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bf4 O-O 6.Rc1 dxc4 7.e3 Be6 8.Ng5 
Bd5 9.e4 h6 10.exd5 hxg5 11.Bxg5 Nxd5 12.Bxc4 Nb6 13.Bb3 Nc6 14.Ne2 Qd7 
15.O-O Na5 16.Bc2 Nac4 17.Be4 c6 18.h4 Rfe8 19.Qb3 Nd6 20.Bxg6 Nd5 21.Bb1 
Qg4 22.Qd3 Kf8 23.g3 Rad8 24.a4 Rd7 25.Nf4 Nf6 26.Rfe1 e6 27.Bc2 Nd5 28.
Qh7 Nxf4 29.Bxf4 Bxd4 30.Rcd1 e5 31.Rxd4 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Quinones Carillo, Oscar"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "A90"]
[EventDate "1964.05.20"]
[PlyCount "103"]

1.d4 e6 2.c4 f5 3.g3 Nf6 4.Bg2 Bb4+ 5.Bd2 Be7 6.Bc3 O-O 7.Nd2 c5 8.e3 d6 
9.Ngf3 Nc6 10.O-O Ne4 11.Qc2 Nxc3 12.bxc3 e5 13.Nb3 Qc7 14.Nfd2 cxd4 15.
cxd4 Bf6 16.c5 e4 17.cxd6 Qxd6 18.Nc5 Rf7 19.Rfc1 Bd8 20.Rab1 Rc7 21.Qb3+ 
Kh8 22.Qb5 Re7 23.Nc4 Qd5 24.a4 Qg8 25.a5 Qd5 26.Qa4 f4 27.Nxe4 fxe3 28.
Nxe3 Qxa5 29.Qxa5 Nxa5 30.Nc5 Be6 31.Nxb7 Nxb7 32.Bxb7 Rb8 33.Bg2 Rxb1 34.
Rxb1 Bb6 35.Nd5 Bxd5 36.Bxd5 Rd7 37.Re1 g6 38.Re8+ Kg7 39.Bf3 Rxd4 40.Kg2 
a5 41.Rb8 Rb4 42.Rb7+ Kf6 43.Bd5 Rb2 44.Rf7+ Ke5 45.Bc6 h6 46.h4 Ra2 47.
Be8 a4 48.Rf4 a3 49.Bxg6 Rxf2+ 50.Rxf2 Bxf2 51.Bf7 Kf6 52.Ba2 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Reshevsky, Samuel Herman"]
[Black "Foguelman, Alberto"]
[Result "1/2-1/2"]
[ECO "D98"]
[EventDate "1964.05.20"]
[PlyCount "59"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3 dxc4 5.Qxc4 Bg7 6.e4 O-O 7.Be2 Nc6 8.Nf3 
Bg4 9.Be3 Nd7 10.d5 Nce5 11.Qb3 Nxf3+ 12.gxf3 Bh5 13.f4 Bxe2 14.Nxe2 c6 
15.Rd1 Qa5+ 16.Nc3 Nc5 17.Qc2 Rfd8 18.O-O Bxc3 19.bxc3 cxd5 20.Rxd5 Rxd5 
21.exd5 Qa4 22.Qe2 Rc8 23.f3 b6 24.Bd4 Qd7 25.c4 f6 26.Re1 Kf8 27.Kg2 Nb7 
28.Bf2 Nd6 29.Rc1 Kf7 30.Qd3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Rossetto, Hector Decio"]
[Black "Stein, Leonid"]
[Result "0-1"]
[ECO "D04"]
[EventDate "1964.05.20"]
[PlyCount "180"]

1.d4 d5 2.Nf3 Nf6 3.e3 Bg4 4.Nbd2 e6 5.h3 Bh5 6.Be2 c5 7.O-O Nc6 8.Ne5 
Bxe2 9.Qxe2 cxd4 10.Nxc6 bxc6 11.exd4 Be7 12.Nf3 Nd7 13.Bf4 O-O 14.c3 c5 
15.dxc5 Nxc5 16.Rfd1 Qb6 17.Rac1 Ne4 18.Be3 Qa5 19.c4 Nf6 20.b3 Rac8 21.
Ne5 Qa6 22.Bd4 Rfd8 23.Qf3 dxc4 24.Nxc4 Qxa2 25.Ra1 Qc2 26.Rdc1 Qe4 27.
Qxe4 Nxe4 28.Bxa7 Bf6 29.Nb6 Rc3 30.Rxc3 Nxc3 31.Ra5 Ne2+ 32.Kh2 Nd4 33.
Nc4 Nxb3 34.Rb5 Nd4 35.Rb8 Rxb8 36.Bxb8 h5 37.Kg3 Kh7 38.f4 Kg6 39.Kf2 h4 
40.Ke3 Nc6 41.Bc7 Bd8 42.Ne5+ Kh5 43.Bxd8 Nxd8 44.Ke4 f6 45.Nf3 Nc6 46.Kd3
Nb4+ 47.Ke4 Na6 48.Kd4 Nc7 49.Ke4 g6 50.Kd4 Nd5 51.Ke4 Nc3+ 52.Kd3 Nb5 53.
Ke4 Nd6+ 54.Kd3 Nf5 55.Nd2 Kh6 56.Ne4 Kg7 57.Nd2 Kf7 58.Nf3 Ke7 59.Nd2 e5 
60.fxe5 fxe5 61.Ke4 Kf6 62.Nc4 Ng3+ 63.Kf3 Ke6 64.Nb6 Nf5 65.Ke4 Nd6+ 66.
Kf3 Nf5 67.Ke4 Ng3+ 68.Kf3 Kd6 69.Ke3 Nh5 70.Nc4+ Kd5 71.Nb6+ Ke6 72.Nc4 
Nf6 73.Nd2 Kf5 74.Nb3 e4 75.Nd4+ Ke5 76.Nc6+ Kd6 77.Nd4 Kd5 78.Ne2 Ke5 79.
g3 g5 80.gxh4 gxh4 81.Ng1 Nd5+ 82.Kf2 Kd4 83.Ne2+ Kd3 84.Nc1+ Kc2 85.Ne2 
Kd2 86.Nd4 Nf4 87.Nf5 Nxh3+ 88.Kf1 e3 89.Nxh4 e2+ 90.Kg2 Ng5 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.16"]
[Round "20"]
[White "Vranesic, Zvonko"]
[Black "Smyslov, Vassily"]
[Result "0-1"]
[ECO "E43"]
[EventDate "1964.05.20"]
[PlyCount "120"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 b6 7.O-O Bb7 8.a3 Bxc3 
9.bxc3 Ne4 10.Nd2 f5 11.f3 Nxd2 12.Bxd2 Nc6 13.Qc2 Qf6 14.Be1 d6 15.Kh1 
Na5 16.Bg3 e5 17.Bf2 Ba6 18.Qe2 Rac8 19.e4 cxd4 20.cxd4 Bxc4 21.Rac1 Bxd3 
22.Qxd3 fxe4 23.Qxe4 Qe6 24.Rfe1 Rfe8 25.Rxc8 Qxc8 26.f4 Qc6 27.dxe5 dxe5 
28.fxe5 Qxe4 29.Rxe4 Kf7 30.g4 Nc6 31.Bg3 Ke6 32.Re1 Rd8 33.Rc1 Ne7 34.Rc3
Rc8 35.Rd3 Nd5 36.Kg2 Rc3 37.Rxc3 Nxc3 38.Kf3 Nb5 39.a4 Nc3 40.a5 bxa5 41.
Be1 Nb5 42.Bxa5 Nd4+ 43.Ke4 Nc6 44.Bc3 a5 45.h3 a4 46.Bb2 Nb4 47.Bc3 Nd5 
48.Bb2 g5 49.Ba3 Nc3+ 50.Kd3 Nb5 51.Bc1 a3 52.Kc4 a2 53.Bb2 Nc7 54.Kb3 Nd5
55.Kxa2 Nf4 56.Kb3 Kd5 57.e6 Kxe6 58.Bc1 Ke5 59.Kc2 Ke4 60.Kd1 Nxh3 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Benko, Pal"]
[Black "Berger, Bela"]
[Result "1/2-1/2"]
[ECO "D37"]
[EventDate "1964.05.20"]
[PlyCount "80"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Bf4 Nf6 5.e3 O-O 6.Nf3 c5 7.dxc5 Bxc5 8.a3 Nc6
9.Qc2 Qa5 10.Nd2 Bb4 11.Rc1 Bxc3 12.Qxc3 Qxc3 13.Rxc3 e5 14.Bg5 d4 15.Rc1 
Ng4 16.h3 dxe3 17.fxe3 f6 18.hxg4 fxg5 19.Be2 e4 20.Nxe4 Ne5 21.Rf1 Rxf1+ 
22.Kxf1 Nxg4 23.Bxg4 Bxg4 24.Nd6 b6 25.b4 Kf8 26.c5 bxc5 27.Rxc5 Rd8 28.
Nf5 Rd7 29.Nd4 h6 30.Ra5 Rc7 31.Nb5 Rc2 32.Nd4 Rc7 33.Kf2 Bd7 34.e4 g4 35.
e5 Ke7 36.e6 Bxe6 37.Re5 Kd6 38.Rxe6+ Kd5 39.Rg6 Kxd4 40.Rxg4+ Ke5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Bronstein, David"]
[Black "Darga, Klaus"]
[Result "1-0"]
[ECO "D31"]
[EventDate "1964.05.20"]
[PlyCount "89"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.cxd5 exd5 5.Bf4 c6 6.e3 Bf5 7.h3 Nf6 8.g4 Be6 
9.Bd3 Nbd7 10.Nf3 Nb6 11.Qc2 g6 12.Bh6 Nc4 13.Bxc4 dxc4 14.e4 Qa5 15.a3 
O-O-O 16.O-O-O Ne8 17.Bd2 Qa6 18.Bf4 Nc7 19.Rhe1 Bd6 20.Bg5 Rde8 21.Bf6 
Rhg8 22.Ne5 Kb8 23.f4 Bc8 24.Ne2 Re6 25.Bh4 Bxa3 26.bxa3 Qxa3+ 27.Kd2 Nb5 
28.Nxc4 Qxh3 29.Bg3 f5 30.e5 Nxd4 31.Qd3 Rd8 32.Nxd4 c5 33.Bf2 Qh2 34.Re2 
Qxf4+ 35.Be3 Qxg4 36.Nd6 Rxe5 37.N4b5 a6 38.Qc3 Rd5+ 39.Kc1 Qxe2 40.Rxd5 
axb5 41.Qxc5 Qa2 42.Nxb5 Qa1+ 43.Kd2 Rxd5+ 44.Qxd5 Qa5+ 45.Ke2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Foguelman, Alberto"]
[Black "Evans, Larry Melvyn"]
[Result "0-1"]
[ECO "E90"]
[EventDate "1964.05.20"]
[PlyCount "84"]

1.d4 Nf6 2.c4 c5 3.d5 d6 4.Nc3 g6 5.e4 Bg7 6.h3 e6 7.Nf3 O-O 8.Be2 exd5 9.
exd5 Bf5 10.O-O Ne4 11.Nxe4 Bxe4 12.Bd3 Bxd3 13.Qxd3 a6 14.Bf4 Qc7 15.Rab1
Nd7 16.b3 Rab8 17.Nd2 Ne5 18.Qg3 b5 19.Rfe1 Rfe8 20.Kh1 bxc4 21.Nxc4 Nxc4 
22.bxc4 Rxe1+ 23.Rxe1 Bf8 24.Bd2 Qd8 25.Bc3 Bg7 26.Re4 h5 27.Kh2 Bxc3 28.
Qxc3 Qg5 29.g3 Qf5 30.Re2 Kh7 31.Kg2 g5 32.Re7 g4 33.hxg4 hxg4 34.Re1 Kg6 
35.Qe3 Rb2 36.Re2 Rb4 37.Qe4 a5 38.Qc2 a4 39.Kg1 Qxc2 40.Rxc2 Kf5 41.Kf1 
Ke4 42.Ke2 a3 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Gligoric, Svetozar"]
[Black "Reshevsky, Samuel Herman"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "160"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.Nbd2 cxd4 13.cxd4 Nc6 14.Nb3 a5 15.Be3 a4 
16.Nbd2 exd4 17.Nxd4 Nxd4 18.Bxd4 Ne5 19.Nf1 Be6 20.Ne3 Rc8 21.b3 axb3 22.
Bxb3 Nc4 23.Qh5 Bf6 24.Bxf6 Qxf6 25.Rad1 Nxe3 26.Rxe3 Bxb3 27.axb3 Rc5 28.
Qf3 Qxf3 29.Rxf3 Rd8 30.Rfd3 g6 31.Rd5 Re8 32.f3 Re6 33.b4 Rc2 34.R1d2 
Rxd2 35.Rxd2 f5 36.exf5 gxf5 37.Rd5 f4 38.Rxb5 Re1+ 39.Kf2 Rb1 40.Rg5+ Kh8
41.b5 Rb2+ 42.Kg1 h6 43.Rf5 Kg7 44.Kh2 Kg6 45.Rxf4 Rxb5 46.g4 Rd5 47.Kg3 
Rd1 48.h4 Ra1 49.Rd4 Ra6 50.Rd5 Rb6 51.Ra5 Rb7 52.Ra6 Rd7 53.Kf4 Kg7 54.
Ra4 Rf7+ 55.Ke3 Rb7 56.Ra6 Re7+ 57.Kf2 Rd7 58.f4 d5 59.Kf3 d4 60.Ra2 d3 
61.Rd2 h5 62.g5 Kg6 63.Ke4 Re7+ 64.Kxd3 Kf5 65.Rg2 Rd7+ 66.Ke3 Re7+ 67.Kf2
Ra7 68.g6 Ra2+ 69.Kg1 Ra1+ 70.Kh2 Ra8 71.Rg5+ Kxf4 72.g7 Rg8 73.Kg2 Ke3 
74.Rxh5 Rxg7+ 75.Rg5 Rf7 76.Kg3 Ke4 77.Kg4 Rf1 78.Ra5 Rg1+ 79.Kh5 Kf4 80.
Kh6 Rb1 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Pachman, Ludek"]
[Black "Vranesic, Zvonko"]
[Result "1/2-1/2"]
[ECO "D36"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be7 6.e3 c6 7.Qc2 Nbd7 8.Bd3 
h6 9.Bh4 O-O 10.Nge2 Re8 11.O-O Ne4 12.Bxe7 Qxe7 13.Rab1 a5 14.a3 Nd6 15.
b4 axb4 16.axb4 b5 17.Ra1 Rxa1 18.Rxa1 Nf6 19.Nd1 Nc4 20.Qc3 Bg4 21.Ng3 g6
22.Bc2 Bxd1 23.Bxd1 h5 24.Bf3 Nh7 25.Ra6 Rc8 26.h3 Nf6 27.Nf1 Kg7 28.Nd2 
Qb7 29.Ra1 Ra8 30.Nb3 Ra7 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Perez Perez, Francisco Jose"]
[Black "Bilek, Istvan"]
[Result "0-1"]
[ECO "E13"]
[EventDate "1964.05.20"]
[PlyCount "98"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.Bg5 Bb7 6.e3 h6 7.Bh4 Bxc3+ 8.bxc3 
d6 9.Be2 Nbd7 10.O-O Qe7 11.Qa4 g5 12.c5 dxc5 13.dxc5 O-O 14.c6 Nc5 15.Qa3
Bxc6 16.Ne5 Bb7 17.Bg3 Nfe4 18.Rad1 Rfd8 19.Rd4 f6 20.Nd3 e5 21.Rxd8+ Rxd8
22.f3 Nxg3 23.hxg3 Ba6 24.Rd1 Bxd3 25.Rxd3 a5 26.Rxd8+ Qxd8 27.Bc4+ Kg7 
28.Qc1 Qd6 29.Qc2 e4 30.f4 Qd7 31.Qe2 Nd3 32.Kh2 b5 33.Bb3 c5 34.Bc2 c4 
35.Qd2 f5 36.fxg5 hxg5 37.Qe2 Qd6 38.Qd2 Kf6 39.a4 b4 40.cxb4 axb4 41.a5 
b3 42.Bxd3 exd3 43.Qc3+ Kg6 44.Qxc4 d2 45.Qg8+ Kf6 46.Qh8+ Ke7 47.Qg7+ Ke6
48.Qg6+ Kd5 49.Qxf5+ Kc4 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Porath, Yosef"]
[Black "Lengyel, Levente"]
[Result "0-1"]
[ECO "A32"]
[EventDate "1964.05.20"]
[PlyCount "76"]

1.d4 Nf6 2.c4 c5 3.Nf3 cxd4 4.Nxd4 e6 5.Nc3 a6 6.Bg5 Nc6 7.e3 Qa5 8.Bxf6 
gxf6 9.Be2 Bg7 10.Nb3 Qg5 11.O-O f5 12.f4 Qe7 13.Qd2 O-O 14.Na4 Rd8 15.Nb6
Rb8 16.Rfd1 d6 17.Rac1 Qc7 18.Nd5 Qd7 19.Nb6 Qe7 20.Bf3 Bf8 21.a4 Bd7 22.
h3 Be8 23.Kh2 Bg7 24.Rc2 Na7 25.Nd4 Bc6 26.Bxc6 bxc6 27.a5 c5 28.Nf3 Nc6 
29.Rg1 Qb7 30.Ra1 h6 31.Ne1 Nb4 32.Rcc1 Qe4 33.Na4 Qb7 34.Nd3 Qc6 35.Nxb4 
Rxb4 36.Qc2 Rdb8 37.Ra2 Rb3 38.Ra3 Rxb2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Smyslov, Vassily"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[ECO "A13"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.Nf3 d5 2.c4 e6 3.g3 dxc4 4.Qa4+ Bd7 5.Qxc4 c5 6.Ne5 Nc6 7.Nxd7 Qxd7 8.
Bg2 Nf6 9.d3 Rc8 10.Nd2 Be7 11.Nf3 O-O 12.O-O b6 13.Bd2 Nd5 14.a3 Rfd8 15.
Rac1 Bf6 16.Rc2 Nde7 17.Bh3 Nd4 18.Nxd4 cxd4 19.Qb3 Rxc2 20.Qxc2 Rc8 21.
Qb3 h6 22.Bg2 Bg5 23.f4 Bf6 24.Rc1 Rxc1+ 25.Bxc1 Nd5 26.Qc4 Ne3 27.Qc6 
Qxc6 28.Bxc6 e5 29.fxe5 Bxe5 30.Kf2 Ng4+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Spassky, Boris"]
[Black "Rossetto, Hector Decio"]
[Result "1/2-1/2"]
[ECO "C43"]
[EventDate "1964.05.20"]
[PlyCount "94"]

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 d5 6.exd6 Nxd6 7.Bd3 Nc6 8.Qf4
Qe7+ 9.Be3 g6 10.Nc3 Be6 11.Nd4 Bg7 12.Nxc6 bxc6 13.O-O O-O 14.Bd4 Rab8 
15.Bxg7 Kxg7 16.b3 Qf6 17.Qxf6+ Kxf6 18.Na4 Rfe8 19.Rfd1 Bg4 20.f3 Bf5 21.
Kf2 Re5 22.Bxf5 Rxf5 23.Re1 Ra5 24.Rad1 h5 25.Rd3 Rbb5 26.Rc3 c5 27.Rce3 
c4 28.Re7 Rb7 29.R1e2 c6 30.R7e3 Rd5 31.Nc3 Rd4 32.Re5 Nb5 33.Na4 cxb3 34.
axb3 Rd5 35.R5e3 Nd4 36.Nc3 Nxe2 37.Nxd5+ cxd5 38.Kxe2 a5 39.Kd2 Rb4 40.
Re1 a4 41.Kc3 Rf4 42.Ra1 axb3 43.cxb3 Ke5 44.Ra6 g5 45.Rh6 h4 46.h3 Rf5 
47.Rc6 g4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Stein, Leonid"]
[Black "Larsen, Bent"]
[Result "1-0"]
[ECO "E62"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Bg4 7.h3 Bxf3 8.Bxf3 
Qc8 9.Bg2 c5 10.d5 Na6 11.O-O Nc7 12.Bd2 a6 13.a4 b5 14.b3 Rb8 15.Qc2 bxc4
16.bxc4 Qf5 17.e4 Qe5 18.Rab1 Nd7 19.a5 f5 20.exf5 Qxf5 21.Ne4 Bd4 22.Bh6 
Rfe8 23.Kh1 Bg7 24.Bxg7 Kxg7 25.f4 Kg8 26.Kh2 h5 27.h4 Nf6 28.Nxf6+ Qxf6 
29.Qa4 Rxb1 30.Rxb1 e5 31.dxe6 Qxe6 32.Qc6 Re7 33.Rb7 Qd7 34.Rb6 Qxc6 35.
Rxc6 Ne8 36.Bd5+ Kf8 37.Rxa6 Re2+ 38.Kg1 Ke7 39.Ra7+ Kd8 40.Rf7 Nc7 41.Bc6
1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Tal, Mikhail"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "C65"]
[EventDate "1964.05.20"]
[PlyCount "57"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3 O-O 6.d4 Bb6 7.dxe5 Nxe4 8.Qd5 
Nc5 9.Bg5 Ne7 10.Qd1 Ne4 11.Bh4 d5 12.Nbd2 c6 13.Bd3 f5 14.exf6 Nxf6 15.
Qc2 g6 16.Rae1 Bf5 17.Ne5 Bxd3 18.Qxd3 Nf5 19.Bg5 Qc7 20.Re2 Qg7 21.Rfe1 
Nd6 22.Bxf6 Rxf6 23.Ng4 Rf7 24.Re6 Rd8 25.R1e2 Nf5 26.Nf3 Rd6 27.Ng5 Re7 
28.Rxe7 Nxe7 29.Ne6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.17"]
[Round "21"]
[White "Tringov, Georgi"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[ECO "C00"]
[EventDate "1964.05.20"]
[PlyCount "125"]

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.Ngf3 Nc6 5.g3 dxe4 6.dxe4 e5 7.Bg2 Bc5 8.O-O 
O-O 9.Qe2 Qe7 10.c3 a5 11.Nb3 Bb6 12.Nh4 a4 13.Nd2 Bg4 14.Bf3 Qe6 15.Bxg4 
Qxg4 16.Qxg4 Nxg4 17.h3 Nf6 18.Re1 g6 19.Nc4 Bc5 20.Nf3 Rfe8 21.Bg5 Nh5 
22.Be3 Bf8 23.Rad1 b5 24.Na3 Bxa3 25.bxa3 Red8 26.c4 Rxd1 27.Rxd1 bxc4 28.
Rc1 Nf6 29.Rxc4 Ra6 30.Nd2 Ne8 31.Kf1 Nd6 32.Rc1 Kf8 33.Ke2 Ke7 34.f4 Kd7 
35.Rf1 Ra8 36.fxe5 Nxe5 37.Bc5 Rb8 38.Bxd6 Kxd6 39.Rb1 Rxb1 40.Nxb1 Nc4 
41.Nc3 Nb6 42.Kd3 Ke5 43.Nb1 f5 44.exf5 gxf5 45.Nd2 Kd5 46.Nf3 Nc4 47.Nh4 
Nd6 48.Ng2 c5 49.g4 c4+ 50.Ke3 Ke5 51.Nf4 fxg4 52.hxg4 Ne4 53.Ne2 Nf6 54.
Kf3 Nd5 55.g5 c3 56.Nc1 Kd4 57.Ke2 Nf4+ 58.Kd1 Ne6 59.Ne2+ Kd3 60.Nc1+ Kc4
61.Kc2 Nxg5 62.Ne2 Ne4 63.Ng1 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Bilek, Istvan"]
[Black "Benko, Pal"]
[Result "0-1"]
[ECO "C86"]
[EventDate "1964.05.20"]
[PlyCount "84"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 O-O 8.c3 d5 
9.d3 Re8 10.Nbd2 Bb7 11.a4 Bf8 12.Re1 Na5 13.Bc2 c5 14.axb5 axb5 15.exd5 
Nxd5 16.Nf1 Qc7 17.Bd2 g6 18.h4 c4 19.h5 cxd3 20.Bxd3 e4 21.hxg6 hxg6 22.
Bxe4 Nf6 23.Bxb7 Rxe2 24.Bxa8 Rxe1 25.Bxe1 Nb3 26.Ra6 Kg7 27.Nd4 Nxd4 28.
cxd4 Qc1 29.Bd2 Qxb2 30.Be3 Ng4 31.Bd5 Nxe3 32.fxe3 f5 33.g4 Qe2 34.gxf5 
Qg4+ 35.Bg2 Qxf5 36.Ng3 Qd3 37.Kf2 Be7 38.Be4 Qd2+ 39.Ne2 Bf6 40.Ra7+ Kh6 
41.Ra6 Kg7 42.Ra7+ Kh6 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Darga, Klaus"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Bb7 12.Nbd2 cxd4 13.cxd4 Rc8 14.d5 Nh5 15.Nf1 Nc4
16.b3 Nb6 17.Ne3 g6 18.a4 Nf4 19.axb5 axb5 20.Ra7 Qc7 21.Bd3 Qb8 22.Ra1 b4
23.Nc4 Nxd3 24.Qxd3 Nd7 25.Be3 Nc5 26.Bxc5 Rxc5 27.Ra5 Qc7 28.Rea1 Rxa5 
29.Rxa5 Ra8 30.Rxa8+ Bxa8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Evans, Larry Melvyn"]
[Black "Gligoric, Svetozar"]
[Result "1/2-1/2"]
[ECO "D84"]
[EventDate "1964.05.20"]
[PlyCount "87"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.
Bxc7 Na6 9.Bxa6 Qxg2 10.Qf3 Qxf3 11.Nxf3 bxa6 12.O-O Bb7 13.Ne5 Rac8 14.
Rfc1 f6 15.Nd7 Rfe8 16.Bg3 e5 17.Nc5 Bf3 18.Rc3 a5 19.dxe5 fxe5 20.e4 Bg4 
21.Kg2 Rcd8 22.h3 Be2 23.Ra3 Rd2 24.Rxa5 Re7 25.b4 g5 26.Nb3 Rd3 27.Rc1 h5
28.h4 g4 29.Rac5 Bf3+ 30.Kh2 Kh7 31.Rc7 Rdd7 32.Rxd7 Rxd7 33.Nc5 Rd2 34.
Ne6 Bf6 35.a4 Bxe4 36.b5 Ra2 37.Ng5+ Bxg5 38.hxg5 Ra3 39.Re1 Ba8 40.Re3 
Ra1 41.Bxe5 Rxa4 42.Kg3 Kg6 43.Bf4 Be4 44.Rc3 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Ivkov, Borislav"]
[Black "Pachman, Ludek"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "112"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.Nbd2 cxd4 13.cxd4 Nc6 14.Nb3 a5 15.Bd3 Ba6
16.d5 Nb4 17.Bf1 a4 18.a3 Nxd5 19.Qxd5 axb3 20.Bxb5 Nf6 21.Qd3 Bxb5 22.
Qxb5 Qb8 23.Qxb8 Raxb8 24.Bg5 Rfc8 25.Red1 Rc2 26.Rab1 Rb6 27.Bxf6 Bxf6 
28.Rd3 g6 29.Nd2 Bg5 30.Rxb3 Rxb3 31.Nxb3 Re2 32.a4 Bd8 33.a5 Kf8 34.Kf1 
Rxe4 35.Ra1 Rb4 36.Ra3 Ke8 37.Ke2 Kd7 38.Kd3 Kc6 39.a6 Rb8 40.Na5+ Bxa5 
41.Rxa5 Kb6 42.b4 Rc8 43.a7 Kb7 44.Ke4 Rc4+ 45.Kd3 Rc8 46.b5 d5 47.b6 Rd8 
48.Ra2 Rc8 49.Ra5 Rd8 50.Ra2 Rc8 51.h4 f6 52.Ra5 Rd8 53.Ra2 Ra8 54.Rb2 Rd8
55.Rb5 f5 56.g3 h6 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Larsen, Bent"]
[Black "Spassky, Boris"]
[Result "1-0"]
[ECO "A03"]
[EventDate "1964.05.20"]
[PlyCount "119"]

1.f4 d5 2.Nf3 Nf6 3.e3 g6 4.b4 Bg7 5.Bb2 O-O 6.Be2 Bg4 7.O-O c6 8.a4 Nbd7 
9.Na3 Bxf3 10.Bxf3 Re8 11.d4 Ne4 12.Bxe4 dxe4 13.Nc4 Nb6 14.Na5 Nd5 15.Qe1
Qd7 16.c4 Nf6 17.b5 Qc7 18.Rb1 Ng4 19.bxc6 b6 20.Qe2 f5 21.Nb3 Qxc6 22.d5 
Qxa4 23.Bxg7 Kxg7 24.Nd4 Rec8 25.h3 Nf6 26.Rfc1 Qd7 27.g4 Kf7 28.g5 Ne8 
29.Qa2 Nd6 30.h4 Qe8 31.Ne6 Qh8 32.h5 h6 33.Rb2 gxh5 34.Rh2 hxg5 35.Nxg5+ 
Ke8 36.c5 Rxc5 37.Rxc5 bxc5 38.Qa4+ Kf8 39.Rg2 Re8 40.Qd7 Qh6 41.Qxa7 Qh8 
42.Qd7 Qh6 43.Ne6+ Kf7 44.Ng5+ Kf8 45.Kh2 h4 46.Ne6+ Kf7 47.Ng5+ Kf8 48.
Kh3 c4 49.Ne6+ Kf7 50.Ng5+ Kf8 51.Rg1 c3 52.Qe6 Qxe6 53.dxe6 Kg7 54.Nxe4+ 
Kh6 55.Nxc3 Ne4 56.Nxe4 fxe4 57.Kxh4 Ra8 58.f5 Ra2 59.Rg8 Rf2 60.Rf8 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Lengyel, Levente"]
[Black "Perez Perez, Francisco Jose"]
[Result "1-0"]
[ECO "A29"]
[EventDate "1964.05.20"]
[PlyCount "95"]

1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.g3 d6 5.Bg2 g6 6.d4 exd4 7.Nxd4 Bd7 8.Nc2 
Bg7 9.O-O Qc8 10.e4 O-O 11.Ne3 Bh3 12.Ned5 Bxg2 13.Kxg2 Re8 14.Re1 Ne5 15.
Nxf6+ Bxf6 16.Nd5 Bg7 17.Bg5 Kh8 18.Rc1 h6 19.Bf6 c6 20.Bxg7+ Kxg7 21.Ne3 
Qc7 22.f4 Nd7 23.Qd4+ Nf6 24.Ng4 Qe7 25.Rcd1 Rad8 26.Kf1 c5 27.Qc3 h5 28.
Nf2 Kg8 29.Re2 a6 30.Rde1 Ng4 31.Nd1 b5 32.h3 Nh6 33.cxb5 axb5 34.a3 Qb7 
35.Qf6 Qd7 36.Nf2 d5 37.f5 Qe7 38.Qb6 Qg5 39.exd5 Rxe2 40.Rxe2 Nxf5 41.Ne4
Qc1+ 42.Kf2 Rc8 43.d6 Qc4 44.d7 Qd4+ 45.Kg2 Rf8 46.Qxc5 Qd3 47.Kf2 Rd8 48.
Qc3 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Portisch, Lajos"]
[Black "Berger, Bela"]
[Result "1-0"]
[ECO "D37"]
[EventDate "1964.05.20"]
[PlyCount "37"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Nf3 Nf6 5.Bf4 O-O 6.e3 c5 7.dxc5 Bxc5 8.a3 Nc6
9.Qc2 Qa5 10.Rd1 Ne4 11.cxd5 Nxc3 12.bxc3 exd5 13.Ng5 g6 14.Rxd5 Qxa3 15.
Bc4 Nd8 16.Nxh7 Kxh7 17.Rh5+ Kg7 18.Be5+ f6 19.Rg5 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Quinones Carillo, Oscar"]
[Black "Stein, Leonid"]
[Result "1/2-1/2"]
[ECO "D25"]
[EventDate "1964.05.20"]
[PlyCount "65"]

1.d4 d5 2.Nf3 Nf6 3.c4 dxc4 4.e3 Bg4 5.Bxc4 e6 6.Qb3 Bxf3 7.gxf3 Nbd7 8.
Rg1 Nb6 9.Be2 g6 10.Bd2 a5 11.Nc3 a4 12.Qc2 a3 13.b3 Bg7 14.Rc1 O-O 15.Ne4
Nxe4 16.fxe4 c6 17.Bb4 Re8 18.e5 Nd5 19.Bd6 Bf8 20.Bxf8 Rxf8 21.Qd2 Qh4 
22.Bf3 f6 23.Rg4 Qxh2 24.Ke2 f5 25.Rxg6+ hxg6 26.Rh1 Qxh1 27.Bxh1 Rf7 28.
Bxd5 cxd5 29.Qb4 Ra6 30.Qc5 Kg7 31.f4 Kh7 32.Kf3 Rg7 33.Qf8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Reshevsky, Samuel Herman"]
[Black "Porath, Yosef"]
[Result "1-0"]
[ECO "E59"]
[EventDate "1964.05.20"]
[PlyCount "67"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 d5 6.Bd3 O-O 7.O-O Nc6 8.a3 Bxc3 
9.bxc3 dxc4 10.Bxc4 Qc7 11.Bb5 a6 12.Be2 e5 13.h3 Bf5 14.d5 Rad8 15.c4 b5 
16.Nh4 Bc8 17.Qc2 Na5 18.e4 bxc4 19.Bxc4 Ne8 20.Bg5 Nxc4 21.Qxc4 Nd6 22.
Bxd8 Qxd8 23.Qxc5 Nb7 24.Qc3 Qxh4 25.Qxe5 Nc5 26.Rad1 Qxe4 27.Qc3 Nd7 28.
Rfe1 Qg6 29.Re3 Qd6 30.Qc6 Qf6 31.Rde1 Qd8 32.Rb1 Re8 33.Rxe8+ Qxe8 34.Rc1
1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Rossetto, Hector Decio"]
[Black "Smyslov, Vassily"]
[Result "1/2-1/2"]
[ECO "E15"]
[EventDate "1964.05.20"]
[PlyCount "60"]

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.g3 Ba6 5.Qa4 c6 6.Nc3 d5 7.cxd5 b5 8.Qb3 exd5 
9.Bg5 Be7 10.Bg2 Nbd7 11.O-O b4 12.Na4 Bxe2 13.Rfe1 Bxf3 14.Qxf3 O-O 15.
Rac1 Rc8 16.Qe2 Re8 17.Bh3 Ra8 18.Rxc6 h6 19.Bxf6 Nxf6 20.Qc2 Bf8 21.Rxe8 
Qxe8 22.Kf1 Qd8 23.Rc8 Rxc8 24.Qxc8 Qxc8 25.Bxc8 Bd6 26.f3 Kf8 27.b3 Ke7 
28.Ke2 Kd8 29.Bf5 g6 30.Bh3 h5 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Tringov, Georgi"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "C16"]
[EventDate "1964.05.20"]
[PlyCount "102"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Qd7 5.Qg4 f5 6.Qg3 b6 7.Bd2 Ba6 8.Bxa6 Nxa6
9.Nge2 Bf8 10.h4 Nb4 11.O-O-O O-O-O 12.Qh3 c5 13.g4 fxg4 14.Qxg4 Nc6 15.
dxc5 Bxc5 16.Nf4 Nd4 17.Be3 Nh6 18.Qh3 Ndf5 19.Bxc5 bxc5 20.Kb1 Qc6 21.
Nce2 Rhe8 22.Ng3 Rd7 23.Nxf5 Nxf5 24.Qa3 c4 25.Ne2 Qb6 26.Qf3 Rf7 27.Rh2 
Ref8 28.Qh3 d4 29.Qa3 Rd8 30.Ng3 Nxg3 31.fxg3 Rd5 32.Qa4 c3 33.b3 Kb7 34.
Rhh1 Rfd7 35.Rhe1 a5 36.Qa3 Qb4 37.Qc1 a4 38.a3 Qb5 39.b4 Rxe5 40.Qf4 Rxe1
41.Rxe1 Qc6 42.Qe5 d3 43.cxd3 Rxd3 44.Qxg7+ Rd7 45.Qe5 Rd2 46.Qc5 Qf3 47.
Qe7+ Kb8 48.Qe8+ Kc7 49.Qe7+ Kb8 50.Qe8+ Kc7 51.Qe7+ Kb8 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.19"]
[Round "22"]
[White "Vranesic, Zvonko"]
[Black "Foguelman, Alberto"]
[Result "0-1"]
[ECO "D82"]
[EventDate "1964.05.20"]
[PlyCount "40"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c5 6.dxc5 Qa5 7.cxd5 Nxd5 8.Qxd5 
Bxc3+ 9.bxc3 Qxc3+ 10.Ke2 Qxa1 11.Be5 Qc1 12.Bxh8 Be6 13.Qxb7 f6 14.Qxa8 
Qc4+ 15.Ke1 Qb4+ 16.Ke2 Qc4+ 17.Ke1 Qc3+ 18.Ke2 Qb2+ 19.Kf3 Qe5 20.Qxa7 
Qh5+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Benko, Pal"]
[Black "Lengyel, Levente"]
[Result "1/2-1/2"]
[ECO "E18"]
[EventDate "1964.05.20"]
[PlyCount "63"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Nxe4 
Bxe4 9.Ne1 Bxg2 10.Nxg2 d5 11.Qa4 c5 12.cxd5 Qxd5 13.dxc5 Bxc5 14.Be3 Bxe3
15.Nxe3 Qd7 16.Qxd7 Nxd7 17.Rac1 Rac8 18.Rfd1 Nf6 19.Nc4 Rc5 20.Nd6 Rd8 
21.Rxc5 bxc5 22.Rd2 Kf8 23.e4 Ke7 24.e5 Ng4 25.f4 f6 26.exf6+ gxf6 27.Ne4 
Rxd2 28.Nxd2 e5 29.fxe5 Nxe5 30.b3 Ke6 31.Ne4 c4 32.bxc4 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Berger, Bela"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[ECO "D82"]
[EventDate "1964.05.20"]
[PlyCount "30"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c5 6.dxc5 Qa5 7.cxd5 Nxd5 8.Qxd5 
Bxc3+ 9.bxc3 Qxc3+ 10.Ke2 Qxa1 11.Be5 Qc1 12.Bxh8 Be6 13.Qxb7 Qc2+ 14.Ke1 
Qc1+ 15.Ke2 Qc2+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Bronstein, David"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[ECO "C11"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3 Qb6 8.Na4 Qa5+
9.c3 cxd4 10.b4 Nxb4 11.cxb4 Bxb4+ 12.Bd2 Bxd2+ 13.Nxd2 b6 14.Rb1 Ba6 15.
Qb3 Rc8 16.a3 Bxf1 17.Rxf1 Rc4 18.Nb2 Rc3 19.Qb4 Qxa3 20.Qxa3 Rxa3 21.Rf3 
Ra2 22.Nd3 Rc2 23.Kd1 Rc3 24.Nb3 Rc4 25.f5 O-O 26.fxe6 fxe6 27.Rxf8+ Kxf8 
28.Nd2 Rc3 29.Rb3 Nb8 30.Rxc3 dxc3 31.Nf3 Nc6 32.Kc2 d4 33.Nc1 a5 34.Ne2 
Nb4+ 35.Kb3 c2 36.Nc1 d3 37.Kc4 Kf7 38.Kc3 Kg6 39.g4 h5 40.h3 hxg4 41.hxg4
1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Foguelman, Alberto"]
[Black "Ivkov, Borislav"]
[Result "0-1"]
[ECO "E23"]
[EventDate "1964.05.20"]
[PlyCount "70"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Bd2 O-O 7.e3 Bxc5 8.Rc1 
b6 9.Nf3 Bb7 10.Be2 Qb8 11.O-O Rd8 12.Rfd1 Ne5 13.Nxe5 Qxe5 14.Na4 Bd6 15.
f4 Qf5 16.c5 Qg6 17.g3 Qe4 18.c6 Bxc6 19.Rxc6 Qxc6 20.Rc1 Qb7 21.Qd1 Rac8 
22.Bf3 Rxc1 23.Bxc1 Qc7 24.Nc3 Bc5 25.Nb5 Qb8 26.a3 a6 27.Nc3 b5 28.b4 Ba7
29.Kf2 d5 30.Ne2 Qc7 31.Bb2 Rc8 32.Nd4 Bxd4 33.Qxd4 Qc2+ 34.Kg1 Qb1+ 35.
Bd1 Rc2 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Gligoric, Svetozar"]
[Black "Vranesic, Zvonko"]
[Result "1-0"]
[ECO "B43"]
[EventDate "1964.05.20"]
[PlyCount "43"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.g3 b5 7.Bg2 Bb7 8.O-O Nf6
9.Re1 d6 10.a4 bxa4 11.Nd5 Nxd5 12.exd5 e5 13.Rxa4 g6 14.Bd2 Bg7 15.Ba5 
Qd7 16.Rc4 O-O 17.Rc7 Qa4 18.Rxb7 Qxa5 19.Nc6 Qa2 20.Re3 a5 21.Ra3 Qc4 22.
Bf1 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Pachman, Ludek"]
[Black "Rossetto, Hector Decio"]
[Result "1-0"]
[ECO "D97"]
[EventDate "1964.05.20"]
[PlyCount "81"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Na6 8.Bg5 
c5 9.d5 h6 10.Bh4 b5 11.Nxb5 Qa5+ 12.Nd2 Nb4 13.Nb3 Nd3+ 14.Ke2 Nf4+ 15.
Kf3 Qb6 16.Qxc5 N4xd5 17.Qxb6 Nxb6 18.Nc3 Nfd7 19.Bb5 g5 20.Bg3 f5 21.exf5
Rxf5+ 22.Ke3 Ne5 23.Bxe5 Rxe5+ 24.Kd2 Bg4 25.Rae1 Rxb5 26.Nxb5 Nc4+ 27.Kd3
Nxb2+ 28.Ke4 Rd8 29.N5d4 a5 30.f3 Bc8 31.Nc6 Rd7 32.Rc1 a4 33.Nc5 Rc7 34.
Ne5 Ra7 35.Ncd3 Bb7+ 36.Ke3 Bd5 37.Nc6 Rb7 38.Ncb4 Nxd3 39.Rc8+ Kf7 40.
Nxd5 Nb2 41.Rc2 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Perez Perez, Francisco Jose"]
[Black "Reshevsky, Samuel Herman"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1964.05.20"]
[PlyCount "54"]

1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.d4 cxd4 5.Nxd4 b5 6.a3 Bb7 7.g3 Nf6 8.Bg2 d6 
9.O-O Nbd7 10.Re1 Qc7 11.g4 h6 12.f4 g6 13.Kh1 Be7 14.h3 Nb6 15.Qd3 Rc8 
16.e5 Bxg2+ 17.Kxg2 dxe5 18.fxe5 Nfd7 19.Bf4 Nc4 20.Nd1 g5 21.Bg3 Ncxe5 
22.Qe4 Bd6 23.Nc3 O-O 24.Rad1 Nf6 25.Qe2 Ng6 26.Bxd6 Qxd6 27.Qf3 Nh4+ 0-1

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Porath, Yosef"]
[Black "Evans, Larry Melvyn"]
[Result "1/2-1/2"]
[ECO "A33"]
[EventDate "1964.05.20"]
[PlyCount "63"]

1.d4 Nf6 2.c4 c5 3.Nf3 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Bg5 Bb4 7.Rc1 h6 8.Bh4 
Qb6 9.Bxf6 gxf6 10.e3 Rg8 11.Qd2 f5 12.g3 d6 13.a3 Bxc3 14.Rxc3 Nxd4 15.
exd4 Rg4 16.f4 Bd7 17.Bg2 O-O-O 18.Bf3 Rgg8 19.b4 Kb8 20.O-O Bc6 21.Bxc6 
Qxc6 22.d5 exd5 23.cxd5 Qb6+ 24.Kg2 Rge8 25.Re1 Rxe1 26.Qxe1 Qd4 27.Qe7 
Qxd5+ 28.Kh3 Rc8 29.Rxc8+ Kxc8 30.Qf8+ Kd7 31.Qxh6 Qf3 32.Qf6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Smyslov, Vassily"]
[Black "Larsen, Bent"]
[Result "1/2-1/2"]
[ECO "A39"]
[EventDate "1964.05.20"]
[PlyCount "97"]

1.Nf3 Nf6 2.d4 g6 3.g3 Bg7 4.Bg2 c5 5.c4 Nc6 6.O-O O-O 7.Nc3 cxd4 8.Nxd4 
Qa5 9.Nb3 Qh5 10.e4 Qxd1 11.Rxd1 d6 12.h3 a5 13.a4 Be6 14.Nd5 Nd7 15.Bf1 
Rac8 16.Bd2 Nc5 17.Nxc5 dxc5 18.Bc3 Bd4 19.Bxd4 cxd4 20.Ra3 f5 21.exf5 
Bxf5 22.f4 e6 23.Nb6 Rcd8 24.c5 h5 25.Bg2 h4 26.Rd2 hxg3 27.Rxg3 d3 28.
Bxc6 bxc6 29.Nc4 Rd4 30.Nd6 Rxf4 31.Nxf5 R8xf5 32.Rxg6+ Kf7 33.Rg3 Rxc5 
34.b3 Kf6 35.Rgxd3 Rd5 36.Kg2 Ke7 37.Kg3 Rf8 38.h4 Rfd8 39.Rxd5 cxd5 40.h5
Kf6 41.Rh2 Rg8+ 42.Kf3 Rf8 43.Ke3 Rb8 44.h6 e5 45.Rh5 Rxb3+ 46.Kd2 Rb8 47.
h7 Rh8 48.Ke3 Ke6 49.Rh6+ 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Spassky, Boris"]
[Black "Quinones Carillo, Oscar"]
[Result "1-0"]
[ECO "C65"]
[EventDate "1964.05.20"]
[PlyCount "73"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3 O-O 6.d4 Bb6 7.Bg5 h6 8.Bh4 d6 
9.a4 a5 10.Re1 Qe7 11.Na3 Bg4 12.Nc4 g5 13.Bg3 Nd7 14.Ne3 Bh5 15.Nd5 Qd8 
16.Nxb6 cxb6 17.Qd3 Bxf3 18.Qxf3 Qe7 19.Rad1 Rad8 20.Qf5 Kg7 21.f3 Rfe8 
22.Bf2 Qf6 23.Qxf6+ Kxf6 24.Rd2 Ke7 25.Red1 Rg8 26.Kf1 f6 27.Ke2 Rgf8 28.
dxe5 dxe5 29.b4 Rh8 30.Rd6 axb4 31.cxb4 Nd4+ 32.Bxd4 Kxd6 33.Bxb6+ Ke7 34.
Bxd8+ Rxd8 35.Rxd7+ Rxd7 36.Bxd7 Kxd7 37.Kd3 1-0

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Stein, Leonid"]
[Black "Darga, Klaus"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1964.05.20"]
[PlyCount "64"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Nd7 12.b3 exd4 13.cxd4 Nc6 14.Nc3 Bf6 15.Be3 cxd4
16.Nxd4 Nxd4 17.Bxd4 Bb7 18.Ne2 Re8 19.Ng3 g6 20.b4 d5 21.Bxf6 Qxf6 22.
exd5 Rxe1+ 23.Qxe1 Bxd5 24.Bb3 Bxb3 25.axb3 Qe5 26.Qd1 Nf6 27.Rc1 Re8 28.
Qf3 Ne4 29.Nxe4 Qxe4 30.Qc3 Qe5 31.Qc5 Kg7 32.Rd1 Qf6 1/2-1/2

[Event "interzonal"]
[Site "Amsterdam NED"]
[Date "1964.06.21"]
[Round "23"]
[White "Tal, Mikhail"]
[Black "Tringov, Georgi"]
[Result "1-0"]
[ECO "B06"]
[EventDate "1964.05.20"]
[PlyCount "33"]

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Nf3 c6 5.Bg5 Qb6 6.Qd2 Qxb2 7.Rb1 Qa3 8.Bc4 
Qa5 9.O-O e6 10.Rfe1 a6 11.Bf4 e5 12.dxe5 dxe5 13.Qd6 Qxc3 14.Red1 Nd7 15.
Bxf7+ Kxf7 16.Ng5+ Ke8 17.Qe6+ 1-0

