[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Geller, Efim"]
[Black "Krogius, Nikolai"]
[Result "1-0"]
[ECO "E40"]
[EventDate "1958.01.13"]
[PlyCount "113"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 d5 5.a3 Be7 6.Nf3 O-O 7.Bd3 c5 8.O-O Nc6 
9.dxc5 dxc4 10.Bxc4 Bxc5 11.b4 Bd6 12.Bb2 a6 13.Qe2 b5 14.Bd3 Bb7 15.Rfd1 
Qe7 16.Ne4 Nxe4 17.Bxe4 f5 18.Bc2 e5 19.e4 Nd4 20.Bxd4 exd4 21.Rxd4 Rae8 
22.Re1 Bb8 23.Qd2 Qf6 24.Bb3+ Kh8 25.Bd5 fxe4 26.Rexe4 Rxe4 27.Rxe4 Bc8 
28.Qe1 g6 29.Re8 Bd6 30.Rxf8+ Bxf8 31.h4 Kg7 32.g3 Be7 33.Qe3 Qd6 34.Qc3+ 
Bf6 35.Qxc8 Qxd5 36.Qc7+ Kg8 37.Qc8+ Kg7 38.Qc7+ Kg8 39.Kg2 Qe6 40.Qb7 h6 
41.Qa8+ Kf7 42.Qb7+ Kg8 43.Nd2 Bb2 44.Qf3 Qf7 45.Qa8+ Kh7 46.Qxa6 Qd5+ 47.
Nf3 g5 48.hxg5 hxg5 49.Qe6 Qxe6 50.Nxg5+ Kg6 51.Nxe6 Bxa3 52.Nd4 Bxb4 53.
f4 Bc5 54.Nxb5 Be3 55.Kf3 Bc1 56.g4 Bb2 57.Nd6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Borisenko, Georgy"]
[Black "Furman, Semen"]
[Result "1/2-1/2"]
[ECO "E52"]
[EventDate "1958.01.13"]
[PlyCount "65"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.e3 Bb7 6.Bd3 O-O 7.O-O d5 8.cxd5 
exd5 9.Ne5 a6 10.a3 Bd6 11.f4 c5 12.Rf3 Nc6 13.Rh3 g6 14.Bd2 cxd4 15.Nxc6 
Bxc6 16.exd4 b5 17.f5 Qb6 18.Be3 Rae8 19.Bf2 Qb8 20.Qf3 Qa7 21.Rh6 Ne4 22.
Bxe4 dxe4 23.Qh3 e3 24.Bxe3 Bf4 25.Bxf4 Qxd4+ 26.Kh1 Qxf4 27.Rxh7 Qf2 28.
Rh8+ Kg7 29.Qh6+ Kf6 30.Qh4+ Qxh4 31.Rxh4 Kxf5 32.Kg1 Rd8 33.Rf1+ 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Bannik, Anatoly"]
[Black "Averbakh, Yury"]
[Result "0-1"]
[ECO "E58"]
[EventDate "1958.01.13"]
[PlyCount "114"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O Nc6 8.a3 Bxc3 
9.bxc3 Qc7 10.cxd5 exd5 11.a4 Re8 12.Ba3 c4 13.Bc2 Ne4 14.Qe1 Qd8 15.Bxe4 
Rxe4 16.Nd2 Re8 17.f3 Qa5 18.Bb2 b5 19.axb5 Qxb5 20.Ba3 Na5 21.Qe2 Bd7 22.
Rfb1 Nb3 23.Nxb3 cxb3 24.Qxb5 Bxb5 25.Rxb3 Bc4 26.Rb7 Rxe3 27.Rab1 h5 28.
Rb8+ Re8 29.Bd6 a5 30.Rxe8+ Rxe8 31.Rb8 Rxb8 32.Bxb8 Kf8 33.Kf2 Ke7 34.Ke3
Kd7 35.Ba7 Kc6 36.Bc5 Kb5 37.Kd2 Bf1 38.g3 Kc4 39.Kc2 Bg2 40.f4 Bh3 41.Bf8
g6 42.Bd6 a4 43.Be7 Bf5+ 44.Kb2 Kd3 45.Bd6 Ke4 46.Ka3 Kf3 47.Kxa4 Kg2 48.
Be7 Kxh2 49.Bh4 Bd3 50.Kb4 f6 51.Kc5 Bc4 52.Kd6 g5 53.fxg5 fxg5 54.Bxg5 
Kxg3 55.Ke5 h4 56.Bf4+ Kg2 57.Kf5 h3 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Polugaevsky, Lev"]
[Black "Gipslis, Aivars"]
[Result "1/2-1/2"]
[ECO "E63"]
[EventDate "1958.01.13"]
[PlyCount "133"]

1.c4 Nf6 2.Nf3 g6 3.Nc3 Bg7 4.d4 O-O 5.g3 d6 6.Bg2 a6 7.O-O Nc6 8.h3 Rb8 
9.a4 Na5 10.b3 c6 11.e4 b5 12.axb5 axb5 13.cxb5 cxb5 14.e5 Ne8 15.Nd5 Nc6 
16.Bf4 Bb7 17.Re1 dxe5 18.Nxe5 Nxe5 19.dxe5 Bxd5 20.Qxd5 Qxd5 21.Bxd5 Nc7 
22.Bg2 Ne6 23.Bd2 Nc5 24.Re3 b4 25.Bf1 Rfd8 26.Be1 e6 27.Rc1 Nd7 28.f4 Bf8
29.Rd3 Nc5 30.Rxd8 Rxd8 31.Bc4 Ne4 32.Kf1 Kg7 33.Ke2 Rd4 34.Ra1 Nc3+ 35.
Kf3 Nd5 36.Ra7 Rd1 37.Bf2 Kg8 38.Rd7 h5 39.h4 Rd2 40.Rb7 Rd1 41.Rd7 Nc3 
42.Rb7 Nd5 43.Ba7 Ne7 44.Bc5 Nc6 45.Ke2 Rd8 46.Bb6 Ra8 47.Kd3 Ne7 48.Ra7 
Rc8 49.Ke4 Nf5 50.Kf3 Be7 51.Rb7 Ra8 52.Bf2 Ra1 53.Bd3 Kf8 54.Rb8+ Kg7 55.
Re8 Bf8 56.Rc8 Ra3 57.Bc4 Be7 58.Re8 Bf8 59.Bg1 Be7 60.Bb6 Kh7 61.Rb8 Kg7 
62.Rb7 Kf8 63.Ra7 Kg7 64.Kg2 Kf8 65.Rb7 Ra2+ 66.Kf3 Rc2 67.Rd7 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Petrosian, Tigran"]
[Black "Suetin, Alexei"]
[Result "1-0"]
[ECO "E93"]
[EventDate "1958.01.13"]
[PlyCount "121"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.d5 Nbd7 8.Bg5 h6 
9.Bh4 g5 10.Bg3 Nh5 11.O-O a5 12.Ne1 Nf4 13.Nc2 Nc5 14.Ne3 Nxe4 15.Nxe4 
Nxe2+ 16.Qxe2 f5 17.f3 f4 18.c5 fxe3 19.Qxe3 Bf5 20.Rac1 Qd7 21.Rc3 dxc5 
22.Qxc5 b6 23.Qe3 Qxd5 24.Rxc7 Qd4 25.Bf2 Qxe3 26.Bxe3 Be6 27.a3 b5 28.Bd2
Rfd8 29.Bc3 a4 30.Re1 Rac8 31.Rb7 Rd5 32.Rb6 Bf7 33.Nd6 Rd8 34.Nf5 Kh7 35.
Rb7 R8d7 36.Rxd7 Rxd7 37.Nxg7 Kxg7 38.Rxe5 Kg6 39.Rxb5 Rd1+ 40.Kf2 Rc1 41.
Rb6+ Kh7 42.g4 Rh1 43.h3 Bd5 44.Rd6 Rd1 45.Rd7+ Kg8 46.Ke3 Bb3 47.Rg7+ Kf8
48.Rg6 Bc2 49.Rxh6 Rd3+ 50.Ke2 Rd5 51.h4 gxh4 52.Rxh4 Kf7 53.f4 Bd1+ 54.
Ke3 Kg6 55.g5 Bh5 56.Bf6 Rc5 57.Kd4 Rb5 58.Ke4 Bd1 59.f5+ Kf7 60.Be5 Bc2+ 
61.Kf4 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Tal, Mikhail"]
[Black "Tolush, Alexander"]
[Result "1-0"]
[ECO "E53"]
[EventDate "1958.01.13"]
[PlyCount "55"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 d5 6.Bd3 O-O 7.O-O Nbd7 8.a3 cxd4
9.Nxd5 exd5 10.axb4 dxc4 11.Bxc4 Nb6 12.Bb3 dxe3 13.Bxe3 Nbd5 14.Bc5 Re8 
15.Re1 Rxe1+ 16.Qxe1 b6 17.Bd4 Bb7 18.Rd1 Qe8 19.Be5 Qb5 20.Bxf6 gxf6 21.
Qe4 Qxb4 22.Nd4 f5 23.Qe5 Ne7 24.Qf6 Bd5 25.Nc6 Qxb3 26.Nxe7+ Kf8 27.Re1 
Be6 28.Nxf5 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Korchnoi, Viktor"]
[Black "Boleslavsky, Isaak"]
[Result "0-1"]
[ECO "E86"]
[EventDate "1958.01.13"]
[PlyCount "110"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Nge2 c6 7.Be3 e5 8.Qd2 exd4 
9.Bxd4 a6 10.Be3 b5 11.O-O-O Qa5 12.Qxd6 b4 13.Nb1 Qxa2 14.Qxb4 a5 15.Qa3 
Qxc4+ 16.Nec3 Qb4 17.Bc5 Bh6+ 18.Kc2 Qxa3 19.Nxa3 Re8 20.Nc4 Na6 21.Bd4 
Nb4+ 22.Kb1 Nd7 23.Nd6 Rf8 24.Nxc8 Rfxc8 25.Na4 Rc7 26.Bc4 Re8 27.Rhe1 Bg7
28.e5 Nf8 29.Bb6 Rb7 30.f4 Ne6 31.g3 Bf8 32.Be3 h5 33.Re2 Reb8 34.Red2 Nc7
35.Rd8 Nbd5 36.Rxb8 Rxb8 37.Bd2 Bb4 38.Bc1 Be7 39.Rd3 Rb4 40.b3 Rb8 41.Kb2
Kf8 42.Rd1 Bb4 43.Bd3 Nb5 44.Bd2 Ba3+ 45.Ka2 Bb4 46.Bc4 Nbc7 47.Kb2 Ke7 
48.Bxb4+ Rxb4 49.Ra1 Ne3 50.Kc3 Nb5+ 51.Kd3 Nxc4 52.bxc4 Rb3+ 53.Ke4 Na3 
54.Nc5 Rc3 55.Nb7 Nc2 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Kotov, Alexander"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "A40"]
[EventDate "1958.01.13"]
[PlyCount "168"]

1.d4 e6 2.c4 Bb4+ 3.Bd2 Qe7 4.e4 Nc6 5.Nf3 Nf6 6.Bd3 Bxd2+ 7.Nbxd2 d6 8.
O-O Nd7 9.a3 Qf6 10.d5 Ne7 11.b4 Ng6 12.Re1 O-O 13.Nb3 Rd8 14.Bf1 Ndf8 15.
Qd4 Qf4 16.Qe3 Qf6 17.Qg5 Qxg5 18.Nxg5 Bd7 19.Rac1 Ba4 20.Nd4 c5 21.bxc5 
dxc5 22.Ne2 e5 23.g3 Bd7 24.Nc3 f6 25.Nh3 Ne7 26.Rb1 b6 27.f4 Nc8 28.fxe5 
fxe5 29.Ng5 Nd6 30.Kf2 Re8 31.Ke3 h6 32.Nf3 Nh7 33.Kd3 Nf6 34.a4 Re7 35.a5
Nc8 36.axb6 axb6 37.Ra1 Rb8 38.Ra6 Bg4 39.Nd2 Nd6 40.Rb1 Reb7 41.Na4 Nc8 
42.Be2 Bd7 43.Nc3 Nd6 44.Bd1 Nfe8 45.Nf3 Nc7 46.Raa1 Re8 47.Ba4 Bxa4 48.
Rxa4 Re7 49.Ra2 Rb8 50.Nd2 Rf7 51.Ke3 Rf6 52.Ra7 Rf7 53.Ra2 Rf6 54.Ra7 Rf7
55.Raa1 Nce8 56.Ra6 Rfb7 57.Na4 Nc8 58.Nb2 Nf6 59.Nd3 Ng4+ 60.Ke2 Nd6 61.
h3 Nf6 62.Ke3 Nd7 63.Ne1 Nf7 64.Nef3 g6 65.Ng1 Kg7 66.Ne2 Ng5 67.h4 Nh7 
68.Nc3 Nhf6 69.Nb5 Ng4+ 70.Ke2 Rf8 71.Nd6 Rc7 72.Nf3 Ndf6 73.Rbxb6 Nh5 74.
Ne8+ Rxe8 75.Rxg6+ Kf7 76.Rxg4 Nf6 77.Rf4 exf4 78.e5 Ng4 79.gxf4 Rb7 80.
Nd2 Rb2 81.Kd3 Nf2+ 82.Ke3 Ng4+ 83.Kd3 Nf2+ 84.Ke3 Ng4+ 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "1"]
[White "Taimanov, Mark"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "A97"]
[EventDate "1958.01.13"]
[PlyCount "30"]

1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 Be7 5.O-O O-O 6.c4 d6 7.Nc3 Qe8 8.Re1 Qh5 
9.b3 Nc6 10.d5 Ne5 11.Nxe5 dxe5 12.e4 Qxd1 13.Rxd1 exd5 14.Nxd5 Nxd5 15.
cxd5 Bd6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Bronstein, David"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "B49"]
[EventDate "1958.01.13"]
[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 
Bb4 9.Bd3 O-O 10.Qf3 Nxd4 11.Bxd4 e5 12.Qg3 d6 13.Be3 Bxc3 14.bxc3 Qxc3 
15.Bg5 Nh5 16.Qh4 Nf4 17.Bxf4 exf4 18.Qxf4 Be6 19.Qxd6 b5 20.a3 Rfd8 21.
Qb4 Rac8 22.Rad1 h6 23.f4 Qxb4 24.axb4 Rd4 25.f5 Bc4 26.Rd2 Bxd3 27.cxd3 
Rxb4 28.Ra1 Rd8 29.Rxa6 Rxe4 30.dxe4 Rxd2 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Averbakh, Yury"]
[Black "Korchnoi, Viktor"]
[Result "1/2-1/2"]
[ECO "C83"]
[EventDate "1958.01.13"]
[PlyCount "112"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.c3 Be7 10.Bf4 g5 11.Be3 g4 12.Nfd2 Nc5 13.Qe2 Qd7 14.Rd1 Nxb3 15.
Nxb3 Nxe5 16.N1d2 Bd6 17.Bd4 f6 18.Nc5 Bxc5 19.Bxc5 Kf7 20.f4 Ng6 21.f5 
Bxf5 22.Rf1 Ne5 23.Nb3 Kg6 24.Bd4 Rae8 25.Nc5 Qc8 26.Qf2 Rhf8 27.Qh4 Nc6 
28.Rf4 Nxd4 29.cxd4 Kg7 30.Raf1 Bg6 31.Rxf6 Qd8 32.Rxg6+ Kxg6 33.Qxg4+ Kh6
34.Rxf8 Rxf8 35.Ne6 Qe7 36.Qh3+ Kg6 37.Qg3+ Kf7 38.Nxf8 Kxf8 39.Qf4+ Kg7 
40.h4 c6 41.Kh2 Qe6 42.b4 Qe7 43.a3 h5 44.Kh3 Qe2 45.Qg5+ Kf7 46.Kh2 Ke6 
47.Qd8 Qd1 48.Qe8+ Kd6 49.Qd8+ Ke6 50.Qe8+ Kd6 51.Qe3 Kd7 52.Qh3+ Kd8 53.
Qe3 Kd7 54.Qe5 Qg4 55.Qf6 Kc7 56.Qg5 Qxd4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Gurgenidze, Bukhuti"]
[Black "Petrosian, Tigran"]
[Result "1/2-1/2"]
[ECO "B52"]
[EventDate "1958.01.13"]
[PlyCount "59"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 g6 5.O-O Bg7 6.c3 Nf6 7.e5 dxe5 8.Nxe5 
O-O 9.Nxd7 Nfxd7 10.Re1 Nc6 11.Bf1 Nde5 12.d3 Qd5 13.f4 Nd7 14.Na3 Rfd8 
15.Nc4 Nb6 16.Ne3 Qd7 17.a5 Nd5 18.Nxd5 Qxd5 19.Qa4 e6 20.Be3 Rac8 21.Be2 
Ne7 22.Qa3 Qd6 23.g3 Qc6 24.Bf2 Rd7 25.Rad1 h5 26.Bf1 Nf5 27.Qb3 Qd5 28.
Qa3 Qc6 29.Qb3 Qd5 30.Qa3 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Gipslis, Aivars"]
[Black "Geller, Efim"]
[Result "1/2-1/2"]
[ECO "C15"]
[EventDate "1958.01.13"]
[PlyCount "40"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Bd3 dxe4 5.Bxe4 Nf6 6.Bf3 O-O 7.Ne2 e5 8.O-O 
Bxc3 9.Nxc3 exd4 10.Nb5 c5 11.Bf4 a6 12.Nd6 Nc6 13.c3 Be6 14.Bxc6 bxc6 15.
cxd4 cxd4 16.Qxd4 Ne8 17.Qc5 Nxd6 18.Bxd6 Re8 19.Rfe1 Bd5 20.b3 Qg5 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Boleslavsky, Isaak"]
[Black "Kotov, Alexander"]
[Result "1/2-1/2"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "36"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.Bd3 Bb7 7.O-O Qc7 8.Qe2 
Nf6 9.Bd2 Nc6 10.Nxc6 Qxc6 11.a3 Bc5 12.Be3 Bxe3 13.Qxe3 d5 14.exd5 Nxd5 
15.Nxd5 Qxd5 16.Qg3 O-O 17.Rfe1 Qd4 18.c3 Qb6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Suetin, Alexei"]
[Black "Bannik, Anatoly"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1958.01.13"]
[PlyCount "144"]

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 cxd4 13.cxd4 Bb7 14.Nf1 Nxd4 15.Nxd4 
exd4 16.Ng3 Rc8 17.Nf5 Re8 18.Bg5 h6 19.Bh4 Bf8 20.f3 g6 21.Nxd4 Bg7 22.
Bb3 Qc7 23.Qd2 Nd7 24.Rac1 Qb6 25.Bf2 Rxc1 26.Rxc1 Nc5 27.Bd1 Qd8 28.b4 
Ne6 29.Nc6 Qd7 30.Na5 Rc8 31.Nxb7 Rxc1 32.Qxc1 Qxb7 33.Bb3 Nd4 34.Bd1 Qc6 
35.Qd2 Qc4 36.Be3 h5 37.Kf2 Be5 38.f4 Bg7 39.a3 Kh7 40.g4 hxg4 41.hxg4 Kg8
42.g5 Kf8 43.Bg4 Ke7 44.Bh3 Nb3 45.Qe2 Qxe4 46.Bg2 Qf5 47.Bf3 Qb1 48.Bc5+ 
Kf8 49.Bxd6+ Kg8 50.Qe8+ Kh7 51.Qxf7 Qc2+ 52.Kg3 Nd4 53.Bc5 Nxf3 54.Kxf3 
Qd3+ 55.Be3 Qf1+ 56.Kg3 Qe1+ 57.Bf2 Qc3+ 58.Kg4 Qc2 59.Qa7 Qf5+ 60.Kg3 
Qd3+ 61.Qe3 Qd5 62.Qf3 Qf5 63.Bb6 Qc8 64.Qh1+ Kg8 65.Qd5+ Kh7 66.Bd4 Qc1 
67.Bxg7 Qe1+ 68.Kh3 Qe3+ 69.Kg2 Qe2+ 70.Kg3 Qe1+ 71.Kg2 Qe2+ 72.Kh3 Qe3+ 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Tolush, Alexander"]
[Black "Taimanov, Mark"]
[Result "1-0"]
[ECO "B65"]
[EventDate "1958.01.13"]
[PlyCount "87"]

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
Nxd4 9.Qxd4 O-O 10.f4 h6 11.Bh4 Qa5 12.Qg1 Bd7 13.g4 Bc6 14.Be1 Qc7 15.Bd3
d5 16.e5 Ne4 17.Bxe4 dxe4 18.h4 b5 19.Bg3 b4 20.Ne2 Bd5 21.Rxd5 exd5 22.
Qd1 Rfd8 23.Nd4 Qc4 24.Kb1 Bc5 25.Bf2 a5 26.g5 h5 27.e6 fxe6 28.g6 a4 29.
Nxe6 d4 30.f5 d3 31.Bxc5 b3 32.cxb3 axb3 33.axb3 Qa6 34.Ba3 d2 35.Nxd8 
Qd3+ 36.Ka2 e3 37.Rh2 Qxd8 38.f6 gxf6 39.Qxh5 Ra7 40.Rh1 Qd3 41.Qc5 Rxa3+ 
42.Qxa3 d1=Q 43.Rxd1 Qxd1 44.Qa7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Krogius, Nikolai"]
[Black "Borisenko, Georgy"]
[Result "1/2-1/2"]
[ECO "C77"]
[EventDate "1958.01.13"]
[PlyCount "54"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Bxc6 dxc6 6.d3 Nd7 7.Nbd2 Bd6 8.b3 
b5 9.Bb2 Qe7 10.O-O O-O 11.d4 c5 12.d5 Nb6 13.Re1 Bd7 14.Nf1 c6 15.Ne3 
cxd5 16.Nxe5 dxe4 17.Nxd7 Qxd7 18.Bxg7 Kxg7 19.Qxd6 Qxd6 20.Nf5+ Kg6 21.
Nxd6 f5 22.g4 fxg4 23.Rxe4 h5 24.Re6+ Rf6 25.Rxf6+ Kxf6 26.Ne4+ Ke5 27.
Nxc5 Kd4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "2"]
[White "Spassky, Boris"]
[Black "Polugaevsky, Lev"]
[Result "1-0"]
[ECO "B94"]
[EventDate "1958.01.13"]
[PlyCount "82"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Bc4 Qa5 8.Qd2 
e6 9.O-O-O b5 10.Bb3 Bb7 11.Rhe1 Be7 12.f4 Nc5 13.e5 dxe5 14.Bxf6 Bxf6 15.
fxe5 Bh4 16.g3 Be7 17.Bxe6 O-O 18.Bb3 Rad8 19.Qf4 b4 20.Na4 h6 21.Nxc5 
Qxc5 22.h4 Bd5 23.Nf5 Bxb3 24.axb3 Rxd1+ 25.Rxd1 Rc8 26.Qe4 Bf8 27.e6 fxe6
28.Qxe6+ Kh8 29.Qe4 Qc6 30.Qd3 Re8 31.h5 Be7 32.Nxe7 Rxe7 33.Qg6 Qe8 34.g4
Re1 35.Qxe8+ Rxe8 36.Rd4 a5 37.Kd2 Re5 38.c4 bxc3+ 39.bxc3 Rg5 40.c4 Kg8 
41.Rf4 g6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Kotov, Alexander"]
[Black "Averbakh, Yury"]
[Result "0-1"]
[ECO "E52"]
[EventDate "1958.01.13"]
[PlyCount "83"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.e3 Bb7 6.Bd3 O-O 7.O-O d5 8.cxd5 
exd5 9.Bd2 Nbd7 10.Ne5 Nxe5 11.dxe5 Bxc3 12.Bxc3 Ne4 13.Qh5 g6 14.Qh6 Nxc3
15.bxc3 Qe7 16.f4 f5 17.Rac1 Rad8 18.h4 Rd7 19.Bb5 c6 20.Be2 Qa3 21.Rc2 
Rg7 22.Bf3 Qc5 23.Kf2 Bc8 24.Qg5 Ba6 25.Rd1 h6 26.Qg3 Bc4 27.Be2 Bxe2 28.
Kxe2 b5 29.Qe1 Rb8 30.Qd2 Rb6 31.Qd4 Qc4+ 32.Kf2 Rgb7 33.Rb1 Qxd4 34.cxd4 
Ra6 35.a4 b4 36.Rc5 Rxa4 37.Rxc6 Ra2+ 38.Kf3 Kf7 39.Rbc1 b3 40.Rc7+ Rxc7 
41.Rxc7+ Ke6 42.Rc6+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Geller, Efim"]
[Black "Spassky, Boris"]
[Result "1-0"]
[ECO "C95"]
[EventDate "1958.01.13"]
[PlyCount "77"]

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 Nb8 10.d4 Nbd7 11.c4 Bb7 12.Nc3 c6 13.a3 Qc7 14.Bg5 Rae8 15.Rc1 Qb8 
16.Ba2 Kh8 17.b4 c5 18.bxc5 exd4 19.c6 dxc3 20.cxb7 Qxb7 21.cxb5 Qxb5 22.
Rxc3 Nc5 23.Rce3 Ne6 24.e5 Ng4 25.hxg4 Nxg5 26.exd6 Nxf3+ 27.gxf3 Bg5 28.
a4 Qd7 29.Rxe8 Rxe8 30.Rxe8+ Qxe8 31.d7 Qf8 32.Qe2 Qe7 33.Qd3 h6 34.Bc4 a5
35.Bxf7 Bh4 36.Kg2 Bf6 37.Bc4 Qd8 38.Qd5 Bg5 39.Qf7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Korchnoi, Viktor"]
[Black "Suetin, Alexei"]
[Result "1/2-1/2"]
[ECO "A39"]
[EventDate "1958.01.13"]
[PlyCount "82"]

1.c4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.g3 g6 6.Bg2 Bg7 7.O-O O-O 8.Nc3 
Ng4 9.e3 Nge5 10.b3 d6 11.Nde2 Bg4 12.f3 Bd7 13.f4 Ng4 14.h3 Nh6 15.g4 f5 
16.g5 Nf7 17.Rb1 a6 18.Qd2 Rb8 19.Bb2 Qa5 20.a3 e6 21.b4 Qc7 22.Rbc1 Ne7 
23.Rfd1 Rbd8 24.h4 Qb8 25.h5 Rfe8 26.h6 Bh8 27.Nd4 e5 28.Nf3 Be6 29.Nd5 
Nxd5 30.cxd5 Bd7 31.Rc3 Rc8 32.Rxc8 Qxc8 33.Bf1 Qd8 34.Rc1 Qb6 35.Kg2 Kf8 
36.Kg3 Rc8 37.Rxc8+ Bxc8 38.a4 Bd7 39.a5 Qc7 40.Kg2 Ke7 41.Qc3 Qxc3 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Furman, Semen"]
[Black "Krogius, Nikolai"]
[Result "0-1"]
[ECO "D98"]
[EventDate "1958.01.13"]
[PlyCount "80"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Bg4 8.Be3 
Nfd7 9.O-O-O Nc6 10.h3 Bxf3 11.gxf3 Nb6 12.Qc5 f5 13.Ne2 Qd6 14.e5 Qd5 15.
b3 Rfd8 16.Nf4 Qxc5+ 17.dxc5 Rxd1+ 18.Kxd1 Nd7 19.Ne6 f4 20.Bxf4 Ndxe5 21.
Be3 Nxf3 22.Bg2 Nfd4 23.Bxc6 Nxc6 24.Nxc7 Rd8+ 25.Ke2 Kf7 26.Rd1 Rxd1 27.
Kxd1 Be5 28.Nb5 Ke6 29.Kd2 Kf5 30.Nc3 g5 31.a3 g4 32.h4 h5 33.Bg5 Bd4 34.
Nd5 Bxc5 35.b4 Bxf2 36.b5 Nd4 37.Nxe7+ Ke6 38.Ng6 Kf5 39.Ne7+ Ke4 40.Bf6 
g3 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Tal, Mikhail"]
[Black "Boleslavsky, Isaak"]
[Result "0-1"]
[ECO "E87"]
[EventDate "1958.01.13"]
[PlyCount "102"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c5 8.g4 Ne8 9.h4
f5 10.gxf5 gxf5 11.exf5 Bxf5 12.Bd3 e4 13.fxe4 Qe7 14.exf5 Qxe3+ 15.Qe2 
Qg3+ 16.Kd2 Nc7 17.Qh2 Qxh2+ 18.Rxh2 Nd7 19.Ne4 Kh8 20.Rg2 b5 21.Nf3 bxc4 
22.Bxc4 Rab8 23.Rb1 Rxf5 24.Nfg5 Ne5 25.Bb3 c4 26.Bc2 Nxd5 27.Nxd6 Rf6 28.
Nf5 Rd8 29.Ke1 Nf4 30.Rg3 Nfd3+ 31.Bxd3 Nxd3+ 32.Rxd3 Rxd3 33.Nxg7 Kxg7 
34.Ke2 h6 35.Ne4 Re6 36.Rg1+ Rg6 37.Rc1 Rg2+ 38.Nf2 Rd4 39.Kf3 Rg6 40.Ne4 
Re6 41.Rg1+ Kf8 42.Rg4 Ra6 43.h5 Ra5 44.Rf4+ Ke7 45.Rg4 Rxh5 46.Kf4 Kf7 
47.Ke3 Rd3+ 48.Kf4 Rh2 49.Ke5 Re2 50.Rf4+ Ke7 51.Kf5 Rd4 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Taimanov, Mark"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "A21"]
[EventDate "1958.01.13"]
[PlyCount "168"]

1.c4 e5 2.Nc3 d6 3.g3 g6 4.Bg2 Bg7 5.d3 Nd7 6.Rb1 a5 7.a3 Ne7 8.Nf3 O-O 9.
O-O c6 10.Nd2 f5 11.b4 Kh8 12.Nb3 axb4 13.axb4 Nf6 14.Bb2 Qb6 15.b5 Bd7 
16.Nd2 g5 17.Qb3 g4 18.Ra1 c5 19.Rxa8 Rxa8 20.Ra1 Rb8 21.Qa3 Nc8 22.Nb3 
Qc7 23.Na5 Ra8 24.Bxb7 Ra7 25.Nd5 Nxd5 26.Bxd5 Nb6 27.Bg2 Bc8 28.Qc3 e4 
29.Qxg7+ Qxg7 30.Bxg7+ Kxg7 31.Nb3 Rxa1+ 32.Nxa1 Bb7 33.Nb3 Kf6 34.Kf1 Ke5
35.Ke1 h5 36.e3 Kf6 37.Na5 Ba8 38.d4 Ke7 39.Bf1 Kd8 40.h4 Kc7 41.Nb3 Nd7 
42.Kd2 Kb6 43.Kc3 Nf6 44.Nc1 Bb7 45.dxc5+ dxc5 46.Ne2 Ne8 47.Kb3 Ng7 48.
Nc3 Ne6 49.Nd5+ Ka5 50.Ne7 Ng7 51.Be2 Ba8 52.Bd1 Bb7 53.Ka3 Ba8 54.Bb3 Bb7
55.Bc2 Ba8 56.Bd1 Bb7 57.Bb3 Ba8 58.Ba4 Kb6 59.Bc2 Ka5 60.Nc8 Bb7 61.Nd6 
Kb6 62.Ka4 Ba8 63.Nc8+ Kc7 64.Ne7 Kb6 65.Bb3 Bb7 66.Nd5+ Bxd5 67.cxd5 Ne8 
68.d6 Nxd6 69.Be6 Nxb5 70.Bxf5 Nc3+ 71.Kb3 Nd5 72.Bxe4 Nf6 73.Bg6 Kc6 74.
Kc4 Kd6 75.Kd3 Ke6 76.Ke2 c4 77.Kd2 Ke5 78.Kc3 Ne4+ 79.Kxc4 Nxf2 80.Bxh5 
Ne4 81.Bxg4 Nxg3 82.Kd3 Nf1 83.h5 Nxe3 84.h6 Kf6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Bannik, Anatoly"]
[Black "Gurgenidze, Bukhuti"]
[Result "0-1"]
[ECO "B90"]
[EventDate "1958.01.13"]
[PlyCount "120"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 Nbd7 7.O-O g6 8.Bg5 
Bg7 9.Re1 h6 10.Bh4 Ne5 11.Bf1 g5 12.Bg3 Qc7 13.Nf5 Bf8 14.Qd2 e6 15.Ne3 
Bd7 16.Rad1 b5 17.Qd4 h5 18.h3 h4 19.Bh2 Rg8 20.Be2 Rb8 21.Nb1 Bc6 22.Ng4 
Nfxg4 23.hxg4 Qb6 24.Qxb6 Rxb6 25.Nd2 Ke7 26.f3 Bg7 27.Nb3 Rc8 28.c3 Bd7 
29.a3 Nc4 30.Rb1 Nxb2 31.Rxb2 Bxc3 32.Reb1 Bxb2 33.Rxb2 Rbc6 34.Bd1 e5 35.
Kf1 Be6 36.Bg1 Bxb3 37.Rxb3 Rc3 38.Rb2 Rxa3 39.Ke2 Rc1 40.Rd2 b4 41.Be3 f6
42.Rb2 Rxd1 43.Kxd1 Rxe3 44.Kd2 Ra3 45.Rxb4 Ra2+ 46.Ke3 a5 47.Rb7+ Ke6 48.
Ra7 a4 49.Kd3 a3 50.Ke3 Ra1 51.Kf2 a2 52.Ra6 h3 53.Kg3 Rg1 54.Rxa2 Rxg2+ 
55.Rxg2 hxg2 56.Kxg2 d5 57.exd5+ Kxd5 58.Kf2 e4 59.Ke3 exf3 60.Kxf3 Kd4 
0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Borisenko, Georgy"]
[Black "Gipslis, Aivars"]
[Result "1/2-1/2"]
[ECO "E55"]
[EventDate "1958.01.13"]
[PlyCount "86"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.e3 O-O 6.Bd3 d5 7.O-O dxc4 8.Bxc4 
Nbd7 9.Qd3 a6 10.a3 cxd4 11.axb4 dxc3 12.bxc3 Nb6 13.Rd1 Qc7 14.Bb3 Bd7 
15.c4 Rfd8 16.c5 Nbd5 17.Qd4 Bb5 18.Bb2 Be2 19.Re1 Bxf3 20.gxf3 Ne7 21.Qh4
Ng6 22.Qg3 Qxg3+ 23.hxg3 Nd5 24.Bxd5 Rxd5 25.Red1 Rc8 26.e4 Rdd8 27.Rxd8+ 
Rxd8 28.c6 bxc6 29.Rxa6 Rc8 30.f4 f6 31.Bd4 e5 32.fxe5 fxe5 33.Bc5 Kf7 34.
Ra7+ Kf6 35.Kg2 h5 36.Kh3 Re8 37.Rc7 Re6 38.f3 Nh8 39.Rc8 Nf7 40.Kg2 g5 
41.Rg8 Nh6 42.Rh8 Kg7 43.Rc8 Kg6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "3"]
[White "Polugaevsky, Lev"]
[Black "Tolush, Alexander"]
[Result "1-0"]
[ECO "C90"]
[EventDate "1958.01.13"]
[PlyCount "127"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.d3 d6 
9.c3 Be6 10.Nbd2 Bxb3 11.Qxb3 Na5 12.Qd1 c5 13.Nf1 Nc6 14.Ng3 d5 15.Nf5 
dxe4 16.dxe4 Qxd1 17.Rxd1 Bd8 18.Ng3 Re8 19.Bg5 Re6 20.Bxf6 Bxf6 21.Rd5 
Be7 22.Nf5 Bf8 23.Rad1 g6 24.Ne3 Ra7 25.Ng5 Re8 26.Ng4 Kg7 27.Nf3 f6 28.
Rd7+ Rxd7 29.Rxd7+ Re7 30.Rd6 Rc7 31.Rxf6 h5 32.Ne3 Kxf6 33.Nd5+ Ke6 34.
Nxc7+ Kd7 35.Nxa6 Kc8 36.b4 cxb4 37.cxb4 Kb7 38.Nc5+ Bxc5 39.bxc5 Ka6 40.
Ne1 b4 41.Nd3 Kb5 42.Kf1 Kc4 43.Ke2 Kc3 44.Ke3 g5 45.h4 gxh4 46.f4 exf4+ 
47.Nxf4 Kb2 48.e5 Nxe5 49.Kd4 Nc6+ 50.Kd5 Na7 51.Kc4 Kxa2 52.Kxb4 Kb2 53.
Nxh5 Kc2 54.Nf4 Kd2 55.Ng6 Ke3 56.Nxh4 Kd4 57.g4 Kd5 58.g5 Kc6 59.g6 Kd7 
60.g7 Nc6+ 61.Kb5 Ne7 62.Nf5 Ng8 63.c6+ Kc7 64.Kc5 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Boleslavsky, Isaak"]
[Black "Taimanov, Mark"]
[Result "1/2-1/2"]
[ECO "B41"]
[EventDate "1958.01.13"]
[PlyCount "51"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Qc7 7.Nc2 b6 8.Bd3 d6 
9.O-O Nbd7 10.Ne3 Bb7 11.f3 Be7 12.Bd2 O-O 13.Rc1 Rac8 14.Re1 Qb8 15.Bf1 
Rfd8 16.Rc2 Nc5 17.Bc1 Bc6 18.a4 Nfd7 19.b3 Ne5 20.Rf2 Bb7 21.Bb2 Nc6 22.
Rd2 Nb4 23.Ba3 Nc6 24.Bb2 Nb4 25.Ba3 Nc6 26.Bb2 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Averbakh, Yury"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "A76"]
[EventDate "1958.01.13"]
[PlyCount "70"]

1.d4 Nf6 2.c4 e6 3.Nc3 c5 4.d5 exd5 5.cxd5 d6 6.e4 g6 7.Be2 Bg7 8.Nf3 O-O 
9.O-O Re8 10.Qc2 Na6 11.Bf4 Nb4 12.Qb1 Nxe4 13.Nxe4 Bf5 14.Nfd2 Nxd5 15.
Bxd6 Nf6 16.Bf3 Nxe4 17.Nxe4 Bxe4 18.Bxe4 Qxd6 19.Qc2 Re7 20.Bf3 Rae8 21.
Rad1 Bd4 22.a4 b6 23.b3 Re5 24.Rd2 h5 25.Re2 Rxe2 26.Bxe2 h4 27.Kh1 Qf4 
28.g3 Qf6 29.Qd1 Rd8 30.Bg4 Bxf2 31.Qe2 Rd2 32.Qe8+ Kg7 33.gxh4 Qd4 34.Bh3
Qd3 35.Bg2 Rd1 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Gipslis, Aivars"]
[Black "Furman, Semen"]
[Result "0-1"]
[ECO "B48"]
[EventDate "1958.01.13"]
[PlyCount "160"]

1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.d4 cxd4 5.Nxd4 Qc7 6.Bd3 Nc6 7.Be3 Nf6 8.O-O 
Nxd4 9.Bxd4 Bc5 10.Bxc5 Qxc5 11.Qe2 d6 12.a4 O-O 13.Kh1 e5 14.f4 Bg4 15.
Qe1 exf4 16.Rxf4 Be6 17.Qe2 Qg5 18.Raf1 Rfe8 19.Qf2 Rad8 20.Qb6 Rd7 21.b4 
Qe5 22.Ne2 d5 23.exd5 Nxd5 24.Qd4 Qxd4 25.Rxd4 Ne3 26.Re1 Kf8 27.Re4 Ng4 
28.Kg1 Nf6 29.Rd4 Bg4 30.Rxd7 Bxd7 31.a5 Ng4 32.Rb1 Ne5 33.Be4 Bc6 34.Nc3 
Rc8 35.Nd5 Rd8 36.Nc3 Rd2 37.Bxc6 Nxc6 38.Rb2 Nd4 39.b5 Rxc2 40.bxa6 bxa6 
41.Rxc2 Nxc2 42.Nd5 Nd4 43.Nb4 Nb3 44.Nxa6 Ke7 45.Nb4 Nxa5 46.Kf2 Ke6 47.
Nd3 Nc4 48.Nf4+ Kf5 49.Nd5 Ke5 50.Nb4 Ke4 51.Na6 Ne5 52.Nc5+ Kf4 53.Nb7 
Ng4+ 54.Kg1 f5 55.Nd6 g6 56.Nf7 Ke3 57.Ng5 Nf6 58.Kf1 f4 59.Kg1 h5 60.Nf3 
Nd7 61.Kf1 Nc5 62.Nh4 g5 63.Nf5+ Ke4 64.Nd6+ Kd3 65.Nf5 Ne4 66.Ng7 h4 67.
h3 Kd2 68.Ne6 Ke3 69.Nc7 Ng3+ 70.Kg1 Ne2+ 71.Kh2 Nd4 72.Nd5+ Kf2 73.Nf6 
Ne6 74.Ng4+ Kf1 75.Nf6 Nc5 76.Nh7 Ne4 77.Nf8 Nd2 78.Ng6 f3 79.gxf3 Nxf3+ 
80.Kh1 Kf2 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Spassky, Boris"]
[Black "Borisenko, Georgy"]
[Result "1-0"]
[ECO "D15"]
[EventDate "1958.01.13"]
[PlyCount "97"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e4 b5 6.Qc2 Na6 7.Be2 g6 8.Bg5 Bg7 
9.O-O-O Bg4 10.h3 Bxf3 11.gxf3 Nc7 12.h4 Qb8 13.f4 Ne6 14.e5 Nd5 15.f5 
Nxg5 16.hxg5 gxf5 17.Qxf5 Qc8 18.Qe4 Qe6 19.Rxh7 Rxh7 20.Qxh7 Qg6 21.Qg8+ 
Bf8 22.Qxg6 fxg6 23.Ne4 Kf7 24.Bg4 Rd8 25.Nc5 Nf4 26.e6+ Kg8 27.Nd7 Nd3+ 
28.Rxd3 cxd3 29.Kd2 Bg7 30.Kxd3 c5 31.dxc5 Bxb2 32.Ke4 Rc8 33.Kd5 Kg7 34.
Be2 b4 35.Ba6 Rc7 36.Nb8 Bc1 37.Nc6 Bxg5 38.Nd4 Kf6 39.Nb5 Bf4 40.Nxc7 
Bxc7 41.Kc6 Bh2 42.Kd7 g5 43.c6 g4 44.Bc4 g3 45.fxg3 Bxg3 46.c7 Bxc7 47.
Kxc7 a5 48.Kd7 a4 49.Bd3 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Petrosian, Tigran"]
[Black "Bannik, Anatoly"]
[Result "1-0"]
[ECO "A29"]
[EventDate "1958.01.13"]
[PlyCount "121"]

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d6 5.d4 g6 6.dxe5 Nxe5 7.Nxe5 dxe5 8.
Qxd8+ Kxd8 9.Bg5 Be7 10.O-O-O+ Nd7 11.h4 f6 12.Be3 c6 13.h5 g5 14.Bh3 Kc7 
15.Ne4 Nb6 16.Bxc8 Raxc8 17.b3 Rcd8 18.Bc5 Rxd1+ 19.Rxd1 Bxc5 20.Nxc5 Re8 
21.Ne4 Re6 22.g4 a5 23.Rd3 Nd7 24.Kc2 b6 25.Rf3 Kd8 26.a3 c5 27.Kc3 Ke7 
28.Rd3 Rc6 29.Rd5 Nf8 30.Ng3 Ne6 31.Nf5+ Ke8 32.e3 Nc7 33.Rd1 Ne6 34.Kd3 
Rc7 35.Ke4 Rc6 36.Nd6+ Ke7 37.Nf5+ Ke8 38.Nd6+ Ke7 39.Nf5+ Ke8 40.a4 Nd8 
41.Nh6 Ne6 42.Ng8 Nf8 43.Rd2 Kf7 44.Nh6+ Ke8 45.Nf5 Ne6 46.Rd6 Rxd6 47.
Nxd6+ Kd7 48.Nb5 Ng7 49.h6 Ne8 50.Kd5 f5 51.Kxe5 fxg4 52.Nc3 Ke7 53.Ne4 
Kf7 54.Kf5 g3 55.fxg3 g4 56.Ng5+ Kg8 57.Ke6 Nc7+ 58.Kd7 Na6 59.e4 Nb4 60.
e5 Nd3 61.e6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Suetin, Alexei"]
[Black "Kotov, Alexander"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "102"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Bd3 Nf6 7.Qe2 d6 8.f4 
Nbd7 9.g4 Nc5 10.g5 Nfd7 11.Bd2 b5 12.b4 Nxd3+ 13.cxd3 Nb6 14.Rc1 Qd7 15.
O-O h6 16.gxh6 g6 17.a3 Bxh6 18.Be3 Na4 19.Nxa4 bxa4 20.Nf3 Bb7 21.Ng5 f6 
22.Nh3 Kf7 23.Nf2 Rac8 24.Qb2 Rxc1 25.Rxc1 Rc8 26.Kg2 d5 27.Rxc8 Qxc8 28.
Qc1 Qxc1 29.Bxc1 dxe4 30.dxe4 f5 31.Kf3 e5 32.Be3 fxe4+ 33.Nxe4 exf4 34.
Bxf4 g5 35.Bd2 Kg6 36.Ke3 g4+ 37.Kd4 Bg7+ 38.Ke3 Bxe4 39.Kxe4 Bb2 40.Kd3 
Kf5 41.Kc4 Bxa3 42.b5 axb5+ 43.Kxb5 Bd6 44.Kxa4 Bxh2 45.Ba5 Bf4 46.Bb6 Ke4
47.Kb3 g3 48.Kc2 Be3 49.Bc7 g2 50.Bh2 Kf3 51.Kd3 Bb6 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Gurgenidze, Bukhuti"]
[Black "Korchnoi, Viktor"]
[Result "0-1"]
[ECO "A08"]
[EventDate "1958.01.13"]
[PlyCount "66"]

1.e4 e6 2.d3 d5 3.Nd2 c5 4.Ngf3 Nc6 5.g3 Nf6 6.Bg2 Be7 7.O-O O-O 8.Re1 Qc7
9.c3 b6 10.Qe2 Ba6 11.e5 Nd7 12.Nf1 b5 13.Bf4 b4 14.c4 dxc4 15.dxc4 Nb6 
16.b3 Nd5 17.Bd2 Rad8 18.Qe4 Nc3 19.Bxc3 bxc3 20.Rec1 Bb7 21.Rxc3 Rd7 22.
Qe2 Rfd8 23.Re3 Qa5 24.h4 h6 25.N1h2 Qc7 26.Nf1 a5 27.N1d2 Bf8 28.Rf1 Ne7 
29.Nb1 Nf5 30.Rc3 Bc6 31.Re1 a4 32.Na3 Nd4 33.Nxd4 cxd4 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Bronstein, David"]
[Black "Polugaevsky, Lev"]
[Result "1-0"]
[ECO "D02"]
[EventDate "1958.01.13"]
[PlyCount "75"]

1.d4 d5 2.Nf3 Nf6 3.g3 Bf5 4.Bg2 h6 5.c4 c6 6.cxd5 cxd5 7.Qb3 Qb6 8.Qxb6 
axb6 9.Nc3 e6 10.O-O Nc6 11.Bf4 Ne4 12.Nb5 Kd7 13.Ne5+ Nxe5 14.dxe5 Bc5 
15.Be3 Ra5 16.Nd4 Rha8 17.Rad1 Rxa2 18.f3 Bxd4 19.Bxd4 Nc5 20.e4 Bg6 21.
exd5 exd5 22.Bxc5 bxc5 23.Rxd5+ Ke7 24.f4 Rxb2 25.Rxc5 Bf5 26.Rc7+ Kf8 27.
Bf3 Be6 28.f5 Bxf5 29.Bd5 Bg6 30.e6 Re2 31.Rxb7 Rd8 32.Bc4 Re5 33.Bb3 Re3 
34.Rfxf7+ Bxf7 35.Rxf7+ Kg8 36.e7 Rd1+ 37.Kf2 Rxb3 38.e8=Q+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "4"]
[White "Tolush, Alexander"]
[Black "Geller, Efim"]
[Result "0-1"]
[ECO "C91"]
[EventDate "1958.01.13"]
[PlyCount "89"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.d4 d6 
9.c3 Bg4 10.a4 Qb8 11.Be3 Na5 12.Bc2 Nc4 13.Bc1 c5 14.d5 bxa4 15.Qe2 Nb6 
16.Nbd2 Bd7 17.c4 g6 18.Nf1 Qc7 19.Ng3 Ne8 20.Bh6 Ng7 21.Nd2 Rae8 22.Ra3 
Qd8 23.Nf5 gxf5 24.Rg3 Bf6 25.exf5 Kh8 26.Bxg7+ Bxg7 27.Qg4 Rg8 28.Ne4 Bf6
29.Qh5 Rxg3 30.hxg3 Rg8 31.g4 Rg7 32.Bd3 Bg5 33.Nxd6 f6 34.Ne4 Be8 35.Qh3 
Qc7 36.g3 Rg8 37.Qh2 Nc8 38.f3 Nd6 39.f4 Bxf4 40.gxf4 Rxg4+ 41.Kh1 Nxf5 
42.Nxf6 Rh4 43.Bxf5 Rxh2+ 44.Kxh2 Qb6 45.Rxe5 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Geller, Efim"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "E97"]
[EventDate "1958.01.13"]
[PlyCount "59"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.Be3 Re8 
9.d5 Nd4 10.Nxd4 exd4 11.Bxd4 Nxe4 12.Bxg7 Kxg7 13.Nxe4 Rxe4 14.Bd3 Rd4 
15.Qc2 Qf6 16.Rae1 Bd7 17.Re3 Re8 18.Rxe8 Bxe8 19.Re1 Bd7 20.Qc3 c6 21.
dxc6 Bxc6 22.h3 d5 23.c5 Ra4 24.Qxf6+ Kxf6 25.a3 Ra5 26.Rc1 Ke5 27.Re1+ 
Kf6 28.Rc1 Ke5 29.Re1+ Kf6 30.Rc1 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Borisenko, Georgy"]
[Black "Tolush, Alexander"]
[Result "1-0"]
[ECO "D50"]
[EventDate "1958.01.13"]
[PlyCount "87"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 c5 5.cxd5 Qb6 6.dxe6 cxd4 7.exf7+ Kxf7 8.
Na4 Qa5+ 9.Bd2 Qd5 10.Rc1 Be6 11.Nf3 Ne4 12.e3 Nxd2 13.Qxd2 dxe3 14.fxe3 
Qxd2+ 15.Nxd2 Nd7 16.Bc4 Bxc4 17.Rxc4 b5 18.Rf1+ Nf6 19.Rc7+ Ke6 20.Nc3 a6
21.Nb3 Kd6 22.Rb7 h5 23.Ke2 h4 24.Nd4 h3 25.g3 Rh5 26.Rd1 Nd5 27.Nxd5 Kxd5
28.Rd7+ Ke5 29.Nxb5 Kf6 30.Nc7 Rb8 31.Nd5+ Kg5 32.b3 Kh6 33.Ra7 Rc8 34.
Rxa6+ Kh7 35.Rd2 Re5 36.Ra4 g5 37.Rc4 Ra8 38.Kf3 Bg7 39.Rc7 Kh6 40.Rd7 Kh5
41.Rxg7 Rf8+ 42.Ke2 Ref5 43.Rh7+ Kg6 44.Rxh3 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Taimanov, Mark"]
[Black "Averbakh, Yury"]
[Result "1-0"]
[ECO "A36"]
[EventDate "1958.01.13"]
[PlyCount "167"]

1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.a3 a6 6.Rb1 Rb8 7.b4 cxb4 8.axb4 b5 
9.cxb5 axb5 10.Nf3 d5 11.Qb3 Nf6 12.d3 O-O 13.Bf4 Rb6 14.Rc1 Bb7 15.O-O d4
16.Nb1 Nd5 17.Bd2 e6 18.Rc5 Re8 19.Na3 Bf8 20.Rxb5 Rxb5 21.Nxb5 Ndxb4 22.
Rb1 Qb6 23.Bxb4 Nxb4 24.Nbxd4 Rb8 25.Nc2 Bxf3 26.Bxf3 Bc5 27.Rf1 Nxc2 28.
Qxc2 Bf8 29.Kg2 Qc5 30.Qa4 h5 31.Rd1 Rb2 32.Ra1 Qb4 33.Qe8 Qe7 34.Qa8 Rc2 
35.Rb1 Rc7 36.Rb8 Kg7 37.Qa1+ Kh7 38.Be4 Bg7 39.Qa4 Qc5 40.Rb5 Ra7 41.Rxc5
Rxa4 42.Rxh5+ Kg8 43.Rb5 Ra2 44.Bf3 Ra7 45.h4 Bf6 46.h5 g5 47.e3 Kg7 48.d4
Rd7 49.d5 exd5 50.Bxd5 Bd8 51.Kh3 Ra7 52.e4 f6 53.Kg4 Bc7 54.f4 gxf4 55.
gxf4 Ba5 56.Rc5 Bb6 57.Rc6 Bd4 58.h6+ Kxh6 59.e5 Kg7 60.Rxf6 Rd7 61.Be6 
Ra7 62.Kf5 Be3 63.Rg6+ Kh7 64.Rg3 Bf2 65.Rf3 Be1 66.Rf1 Bb4 67.Bc4 Rc7 68.
Bd5 Kg7 69.Rg1+ Kh7 70.Ke6 Ra7 71.f5 Ra6+ 72.Kf7 Ra7+ 73.Kf6 Ra6+ 74.Be6 
Bf8 75.Kf7 Bh6 76.f6 Ra7+ 77.Ke8 Ra8+ 78.Ke7 Be3 79.Bf5+ Kh6 80.Rg4 Bc5+ 
81.Kd7 Ra7+ 82.Kc6 Ba3 83.e6 Ra6+ 84.Kb7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Tal, Mikhail"]
[Black "Suetin, Alexei"]
[Result "1/2-1/2"]
[ECO "B39"]
[EventDate "1958.01.13"]
[PlyCount "78"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6 7.Nc3 Ng4 8.Qxg4 
Nxd4 9.Qd1 Nc6 10.Be2 O-O 11.O-O d6 12.Qd2 Qa5 13.a3 Bxc3 14.bxc3 Be6 15.
f4 f6 16.Rab1 Qc7 17.c5 dxc5 18.Bxc5 Rfd8 19.Qe1 Bf7 20.Be3 Na5 21.f5 Nc4 
22.Bxc4 Bxc4 23.Rf3 Rd3 24.fxg6 hxg6 25.Qh4 Rad8 26.Qh6 Rd1+ 27.Kf2 Kf7 
28.Qh7+ Ke6 29.Qh3+ Kf7 30.Rxf6+ Kxf6 31.Qf3+ Ke6 32.Rxd1 Rxd1 33.Qxd1 
Qxh2 34.Qg4+ Kf7 35.Bxa7 Qd6 36.Bd4 Qxa3 37.Qf4+ Ke8 38.Qb8+ Kf7 39.Qc7 
Ba6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Kotov, Alexander"]
[Black "Gurgenidze, Bukhuti"]
[Result "1/2-1/2"]
[ECO "A38"]
[EventDate "1958.01.13"]
[PlyCount "124"]

1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 c5 6.d3 Nc6 7.O-O a6 8.Be3 d6 
9.h3 Bd7 10.Qd2 Rb8 11.Bh6 b5 12.Bxg7 Kxg7 13.b3 bxc4 14.dxc4 Qa5 15.Rad1 
Rfd8 16.Rfe1 Qb4 17.Qe3 Re8 18.Qc1 a5 19.e4 Nd4 20.Nxd4 cxd4 21.Rxd4 e5 
22.Rd3 a4 23.Nb1 Bc6 24.Qd2 Qb7 25.Qe3 Re6 26.Nd2 Nd7 27.Rc3 Qb4 28.h4 Nc5
29.h5 f6 30.Bf3 Ree8 31.Kg2 Qa3 32.Rc2 Ne6 33.hxg6 hxg6 34.Rh1 g5 35.Qc3 
Nd4 36.Rb2 Nxf3 37.Nb1 Qc5 38.Qxf3 Qd4 39.Re2 Rh8 40.Rhe1 Qa7 41.Kf1 Qd7 
42.Re3 g4 43.Qd1 f5 44.Nc3 f4 45.gxf4 exf4 46.Qd4+ Kg8 47.Nd5 Rf8 48.Nf6+ 
Rxf6 49.Qxf6 fxe3 50.Qg6+ Qg7 51.Qe6+ Qf7 52.Qxg4+ Kf8 53.Rxe3 Bd7 54.Qg3 
Qe6 55.e5 Qh3+ 56.Qxh3 Bxh3+ 57.Ke2 Ke7 58.Kd3 Bf5+ 59.Kc3 Rh2 60.exd6+ 
Kxd6 61.Re2 Rh3+ 62.Kb4 Bd7 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Furman, Semen"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "D35"]
[EventDate "1958.01.13"]
[PlyCount "110"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be6 6.e3 c5 7.Bb5+ Nc6 8.Bxf6 
gxf6 9.Nge2 a6 10.Bxc6+ bxc6 11.O-O Rg8 12.Kh1 f5 13.dxc5 Bxc5 14.Nf4 Bd6 
15.Nce2 Qb6 16.Rc1 Kd7 17.Qc2 Rgc8 18.Rfd1 Rab8 19.Rd2 Bb4 20.Rd3 Bd6 21.
Rb3 Qa7 22.Rd3 Qb6 23.b3 a5 24.Rd4 Qd8 25.Rcd1 Rb4 26.Kg1 Qf6 27.R4d2 a4 
28.Rc1 axb3 29.axb3 Ke8 30.Nd3 Rg4 31.Ndf4 h5 32.h3 Rg5 33.Qd1 h4 34.Rdc2 
Kd7 35.Nd4 Rcg8 36.f3 Qg7 37.Ndxe6 fxe6 38.Qf1 Qe5 39.Re1 d4 40.Qa6 Rc8 
41.Rc4 c5 42.Kf2 Rcg8 43.Qb7+ Bc7 44.g4 fxg4 45.hxg4 Rb8 46.Qa6 Rb6 47.Qa2
h3 48.Qc2 h2 49.Kg2 h1=Q+ 50.Kxh1 Rb8 51.Kg2 Rh8 52.b4 Qg7 53.Rg1 dxe3 54.
Qd3+ Rd5 55.Qxe3 Qb2+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Krogius, Nikolai"]
[Black "Gipslis, Aivars"]
[Result "1/2-1/2"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "44"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.f4 Bb4 7.Bd2 Nc6 8.Nxc6 
bxc6 9.Qg4 Bf8 10.Bd3 Nf6 11.Qg3 d5 12.O-O Bc5+ 13.Kh1 O-O 14.Rae1 dxe4 
15.Nxe4 Nxe4 16.Rxe4 Rd8 17.Re5 Rd5 18.Bc3 Bf8 19.Qh4 h6 20.Rf3 Qd8 21.Qe1
Ra7 22.Rg3 c5 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Polugaevsky, Lev"]
[Black "Boleslavsky, Isaak"]
[Result "1/2-1/2"]
[ECO "B63"]
[EventDate "1958.01.13"]
[PlyCount "59"]

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.Nb3 Qb6 10.Be3 Qc7 11.f3 a6 12.g4 b5 13.g5 Nd7 14.f4 Nb6 15.f5 b4 
16.Nb1 Ne5 17.f6 gxf6 18.gxf6 Bxf6 19.Bg5 Bg7 20.Rg1 Ng6 21.Bh6 Be5 22.h4 
Bb7 23.h5 Rfe8 24.hxg6 hxg6 25.Qe2 Na4 26.Nd4 Nc5 27.Bg2 Qa5 28.Qc4 Na4 
29.Qd3 Nc5 30.Qc4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "5"]
[White "Korchnoi, Viktor"]
[Black "Petrosian, Tigran"]
[Result "1/2-1/2"]
[ECO "D54"]
[EventDate "1958.01.13"]
[PlyCount "74"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 h6 6.Bh4 O-O 7.Rc1 b6 8.cxd5 Nxd5
9.Bxe7 Qxe7 10.Nxd5 exd5 11.g3 Bf5 12.Bg2 Be4 13.Bxe4 dxe4 14.Ne2 c5 15.
dxc5 bxc5 16.Qd5 Nd7 17.O-O Rab8 18.b3 Rfc8 19.Rfd1 Nf6 20.Qc4 Qe5 21.Nf4 
Rd8 22.h3 Kf8 23.Kf1 g5 24.Ne2 Rdc8 25.Qa6 h5 26.Rd6 Kg7 27.Rc6 Rxc6 28.
Qxc6 Qf5 29.g4 hxg4 30.Rxc5 Qf3 31.Rxg5+ Kh6 32.h4 Rd8 33.Nd4 Rxd4 34.exd4
Qh1+ 35.Ke2 Qf3+ 36.Ke1 Qh1+ 37.Ke2 Qf3+ 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Petrosian, Tigran"]
[Black "Kotov, Alexander"]
[Result "1/2-1/2"]
[ECO "E54"]
[EventDate "1958.01.13"]
[PlyCount "51"]

1.c4 Nf6 2.d4 e6 3.Nc3 Bb4 4.Nf3 c5 5.e3 O-O 6.Bd3 d5 7.O-O dxc4 8.Bxc4 b6
9.dxc5 Bxc5 10.Qe2 Bb7 11.Rd1 Nbd7 12.a3 a6 13.b4 Be7 14.Bb2 b5 15.Bd3 Qb8
16.Ng5 Ne5 17.Nce4 Nxd3 18.Qxd3 Nxe4 19.Nxe4 Rd8 20.Qc2 Rd5 21.Bd4 Qd8 22.
Bc5 Qc7 23.Rxd5 Bxd5 24.Nc3 Bb7 25.Bxe7 Qxe7 26.Ne4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Suetin, Alexei"]
[Black "Taimanov, Mark"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1958.01.13"]
[PlyCount "55"]

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 Nc4 11.d4 Bb7 12.Qe2 Re8 13.a4 Bf8 14.b3 Nb6 15.dxe5 dxe5 
16.axb5 axb5 17.Rxa8 Qxa8 18.Bg5 c6 19.Bxf6 gxf6 20.Nh4 Bc8 21.Nd2 Bh6 22.
Nf5 Bxf5 23.exf5 Bxd2 24.Qxd2 Qd8 25.Qh6 Qe7 26.Re4 Qf8 27.Rg4+ Kh8 28.
Qxf6+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Gurgenidze, Bukhuti"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "B52"]
[EventDate "1958.01.13"]
[PlyCount "117"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4 Nc6 5.O-O Nf6 6.Re1 g6 7.c3 Bg7 8.d4 cxd4
9.Nxd4 O-O 10.Na3 Rc8 11.Bg5 a6 12.Bxc6 bxc6 13.Nc4 d5 14.Bxf6 Bxf6 15.
exd5 cxd5 16.Ne5 Qc7 17.f4 Rb8 18.Qd2 Rb6 19.Re3 a5 20.b4 Rc8 21.b5 Be8 
22.Rae1 Qd6 23.Qd1 Rb7 24.Qf3 Rbc7 25.Ng4 Bg7 26.f5 Rxc3 27.f6 Rxe3 28.
Qxe3 Bxf6 29.Nxf6+ Qxf6 30.Nf3 e6 31.Rc1 Qd8 32.Rxc8 Qxc8 33.Qd2 Qd8 34.h4
f6 35.Nd4 Qb6 36.Kf1 e5 37.Nf3 d4 38.Qc2 Bf7 39.h5 Kf8 40.Qc8+ Ke7 41.Nd2 
gxh5 42.Ne4 Bd5 43.Ng3 Be6 44.Qh8 Qc5 45.Qxh7+ Kd8 46.Qh8+ Kd7 47.Qg7+ Kc8
48.Qh8+ Kb7 49.Qg7+ Qc7 50.Qxc7+ Kxc7 51.Nxh5 f5 52.Ng7 Bc4+ 53.Ke1 f4 54.
Ne8+ Kd7 55.b6 Ba6 56.Nf6+ Ke6 57.Ne4 Kd5 58.Nf6+ Kc5 59.Nd7+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Boleslavsky, Isaak"]
[Black "Geller, Efim"]
[Result "1/2-1/2"]
[ECO "E55"]
[EventDate "1958.01.13"]
[PlyCount "65"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 O-O 6.Bd3 d5 7.O-O dxc4 8.Bxc4 b6
9.Qe2 Nbd7 10.Re1 cxd4 11.exd4 Bb7 12.Bg5 Bxc3 13.bxc3 Qc7 14.Rac1 Nd5 15.
Bd3 Nf4 16.Bxf4 Qxf4 17.Qe3 Qxe3 18.fxe3 Rac8 19.Rc2 Rc7 20.Rec1 Rd8 21.
Ne1 Nf6 22.h3 Be4 23.Kf2 Rdc8 24.Ke2 Bb7 25.Nf3 Ne4 26.c4 Kf8 27.a4 Ke7 
28.a5 Nd6 29.axb6 axb6 30.Rb2 Nxc4 31.Rb4 Nd6 32.Rxc7+ Rxc7 33.Rxb6 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Averbakh, Yury"]
[Black "Polugaevsky, Lev"]
[Result "1-0"]
[ECO "A42"]
[EventDate "1958.01.13"]
[PlyCount "59"]

1.c4 g6 2.d4 Bg7 3.e4 d6 4.Nc3 Nc6 5.Be3 e5 6.d5 Nce7 7.g4 f5 8.gxf5 gxf5 
9.Qh5+ Kf8 10.Bh3 Nf6 11.Qf3 a6 12.exf5 Qe8 13.Nge2 Qh5 14.Qxh5 Nxh5 15.
Bg5 Nxf5 16.Ng3 Nd4 17.Bxc8 Rxc8 18.Nxh5 Nf3+ 19.Ke2 Nxg5 20.Rag1 Bh6 21.
h4 Nf7 22.Ne4 c6 23.Kd3 cxd5 24.cxd5 Bf4 25.Ng7 Ra8 26.Nf5 Rd8 27.Rg4 Rg8 
28.Rxg8+ Kxg8 29.Rg1+ Kh8 30.Rg7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Spassky, Boris"]
[Black "Krogius, Nikolai"]
[Result "1-0"]
[ECO "E56"]
[EventDate "1958.01.13"]
[PlyCount "99"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.e3 O-O 6.Bd3 d5 7.O-O Nc6 8.a3 Ba5 
9.Ne2 dxc4 10.Bxc4 Bb6 11.dxc5 Bxc5 12.b4 Qxd1 13.Rxd1 Be7 14.Bb2 b6 15.
Nf4 Bb7 16.Ng5 Nd8 17.Rac1 h6 18.Ngxe6 fxe6 19.Nxe6 Rc8 20.Bb3 Nf7 21.Nxf8
Kxf8 22.Rxc8+ Bxc8 23.Rc1 Nd6 24.f3 Nfe8 25.e4 Bg5 26.f4 Bxf4 27.Rf1 g5 
28.g3 Bh3 29.Rf2 Nxe4 30.Re2 Nd2 31.gxf4 Nxb3 32.Re3 Bg4 33.Rxb3 gxf4 34.
Be5 f3 35.h3 Bh5 36.Bb8 a6 37.b5 Bf7 38.Rxf3 axb5 39.Rf5 Ke7 40.Rxb5 Be6 
41.h4 Ng7 42.Rxb6 Nf5 43.Rb4 Kd7 44.a4 Ne7 45.Rb7+ Kd8 46.a5 Nc6 47.a6 Bc8
48.Bf4 Nd4 49.Kf2 Ne6 50.Rb8 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Bronstein, David"]
[Black "Borisenko, Georgy"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1958.01.13"]
[PlyCount "105"]

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 Nc6 12.Be3 cxd4 13.cxd4 Nb4 14.Bb3 Bb7 15.Nc3 
Nxe4 16.Nxe4 Bxe4 17.Bd2 d5 18.Nxe5 Rc8 19.Rc1 Rxc1 20.Qxc1 Nd3 21.Nxd3 
Bxd3 22.Qc6 Bc4 23.Bd1 Bf6 24.b3 Bd3 25.Bb4 Qc8 26.Qb6 Re8 27.Rxe8+ Qxe8 
28.Bf3 Be4 29.Bxe4 dxe4 30.d5 Bd8 31.Qb8 e3 32.Kf1 e2+ 33.Ke1 h6 34.Qc8 g6
35.d6 Kh7 36.Bc3 f6 37.b4 Kg7 38.Qb7+ Qf7 39.Qxa6 Qd5 40.Bd2 Qxg2 41.Kxe2 
Qe4+ 42.Be3 Qc4+ 43.Kd1 Kf7 44.Qa8 Ke8 45.Qb7 g5 46.Bc5 f5 47.Qc6+ Kf7 48.
Qd7+ Kg6 49.Qe8+ Kh7 50.Qxd8 Qd3+ 51.Ke1 Qb1+ 52.Ke2 Qe4+ 53.Be3 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Bannik, Anatoly"]
[Black "Korchnoi, Viktor"]
[Result "1-0"]
[ECO "C05"]
[EventDate "1958.01.13"]
[PlyCount "77"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Ng8 5.Bd3 b6 6.c3 Qd7 7.Ne2 Nc6 8.Nf3 Bb7 
9.Qc2 h6 10.Nf4 Na5 11.O-O Ne7 12.Nh5 O-O-O 13.Qe2 Kb8 14.Nd2 c5 15.dxc5 
bxc5 16.b4 cxb4 17.cxb4 Nac6 18.a3 Nf5 19.Bb2 d4 20.Nc4 Rc8 21.Rfd1 Nh4 
22.f3 Nf5 23.Ng3 Nxg3 24.hxg3 f5 25.Rac1 h5 26.Qf2 g5 27.b5 Nd8 28.Bf1 Bc5
29.Bxd4 Qd5 30.Nd6 Bxd4 31.Rxc8+ Bxc8 32.Qxd4 Qxd4+ 33.Rxd4 Rh7 34.Nxf5 
Nf7 35.Nd6 Nxe5 36.Re4 Nf7 37.Nxc8 Kxc8 38.Rxe6 h4 39.Re7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "6"]
[White "Tolush, Alexander"]
[Black "Furman, Semen"]
[Result "1-0"]
[ECO "C90"]
[EventDate "1958.01.13"]
[PlyCount "111"]

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.a4 b4 10.d4 bxc3 11.bxc3 Bg4 12.Be3 exd4 13.cxd4 d5 14.e5 Ne4 15.h3 Bh5 
16.Nbd2 Bb4 17.Qc2 Na5 18.Rec1 Nc3 19.Qd3 Bg6 20.Qf1 Ne4 21.Bc2 Qe7 22.
Nxe4 Bxe4 23.Bg5 Qd7 24.Bd2 Nc6 25.Be3 Ba5 26.Ng5 Bxc2 27.Rxc2 h6 28.Nf3 
Nd8 29.Qc1 Rb8 30.Kh2 Re8 31.g4 Rb3 32.Nh4 Re6 33.Nf5 Kf8 34.Qd1 Rbb6 35.
Qf3 Rbc6 36.Rxc6 Rxc6 37.g5 h5 38.Bc1 Kg8 39.Ba3 Rc3 40.Ne3 Ne6 41.Qxh5 
Nxd4 42.Bb2 Qe6 43.Bxc3 Qxe5+ 44.Kg1 Bxc3 45.Rb1 Nc6 46.Qg4 d4 47.Nf1 Nb4 
48.Ng3 a5 49.Ne4 d3 50.g6 fxg6 51.Qxg6 Bd4 52.Ng5 Bc5 53.Kg2 Bd6 54.Qh7+ 
Kf8 55.Qh8+ Ke7 56.Nf3 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Gipslis, Aivars"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "C19"]
[EventDate "1958.01.13"]
[PlyCount "61"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.a4 Qa5 8.Bd2 c4 
9.Nh3 O-O 10.Be2 Nd7 11.O-O Nb6 12.f4 Nxa4 13.g4 f5 14.exf6 Rxf6 15.Ng5 
Bd7 16.h4 Raf8 17.h5 b5 18.Nf3 Nc6 19.Qe1 Qc7 20.Nh4 Rxf4 21.Bxf4 Rxf4 22.
Ng2 Rxf1+ 23.Bxf1 Qa5 24.Ra3 Qb6 25.Kh1 a5 26.Ra1 Qd8 27.Qg3 Qb8 28.Qf3 
Qf8 29.Qg3 Qb8 30.Qf3 Qf8 31.Qg3 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Furman, Semen"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "D49"]
[EventDate "1958.01.13"]
[PlyCount "60"]

1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.Nc3 e6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 a6
9.e4 c5 10.e5 cxd4 11.Nxb5 Ng4 12.Nbxd4 Bb4+ 13.Bd2 Bxd2+ 14.Qxd2 Ngxe5 
15.Nxe5 Nxe5 16.Be4 Rb8 17.O-O O-O 18.Qc3 Qf6 19.Rac1 Bb7 20.Bxb7 Rxb7 21.
Nc6 Nxc6 22.Qxf6 gxf6 23.Rxc6 Rxb2 24.Rxa6 Rc8 25.Ra3 Rbc2 26.Rg3+ Kf8 27.
Rh3 Kg7 28.Rg3+ Kf8 29.Rh3 Kg7 30.Rg3+ Kf8 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Kotov, Alexander"]
[Black "Bannik, Anatoly"]
[Result "1-0"]
[ECO "D79"]
[EventDate "1958.01.13"]
[PlyCount "105"]

1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 c6 6.O-O d5 7.cxd5 cxd5 8.d4 
Nc6 9.Ne5 Nd7 10.Nxd5 Ncxe5 11.dxe5 e6 12.Nf6+ Nxf6 13.Qxd8 Rxd8 14.Bg5 
Nd5 15.Bxd8 Bxe5 16.e4 Nb4 17.Rfd1 Nc6 18.Rd2 Bd4 19.Rc1 e5 20.Bg5 Be6 21.
b3 a5 22.Bf1 a4 23.bxa4 Rxa4 24.Bb5 Rb4 25.Bxc6 bxc6 26.Kg2 c5 27.Bf6 Rb6 
28.f4 Bh3+ 29.Kxh3 Rxf6 30.fxe5 Rf3 31.Re2 Rd3 32.Kg4 h5+ 33.Kh4 Kf8 34.e6
fxe6 35.Rb1 Kg7 36.e5 c4 37.Rb4 c3 38.Kh3 g5 39.Kg2 Kg6 40.a4 g4 41.a5 h4 
42.Rb1 h3+ 43.Kf1 Kf5 44.a6 Bc5 45.Ra2 Ke4 46.Ra4+ Rd4 47.Rxd4+ Kxd4 48.
Ke2 c2 49.Ra1 Kc3 50.a7 Bxa7 51.Rxa7 c1=Q 52.Rc7+ Kb2 53.Rxc1 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Taimanov, Mark"]
[Black "Gurgenidze, Bukhuti"]
[Result "0-1"]
[ECO "A16"]
[EventDate "1958.01.13"]
[PlyCount "78"]

1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.e4 d6 6.Nge2 c5 7.a3 Nc6 8.Rb1 a5 
9.O-O Bg4 10.f3 Bd7 11.d3 Ne8 12.Be3 Nc7 13.b3 Nd4 14.a4 Na6 15.f4 Bg4 16.
h3 Bxe2 17.Nxe2 Nxe2+ 18.Qxe2 Bd4 19.Bxd4 cxd4 20.e5 Nc5 21.h4 dxe5 22.
fxe5 Ra6 23.h5 Rb6 24.Rf4 f5 25.exf6 Rbxf6 26.Re1 Rxf4 27.gxf4 e6 28.hxg6 
hxg6 29.Qg4 Kg7 30.Re5 Nxd3 31.Rb5 Nxf4 32.Rxb7+ Kh6 33.c5 d3 34.c6 Ne2+ 
35.Kh1 d2 36.Qh3+ Kg5 37.Qe3+ Rf4 38.c7 d1=Q+ 39.Kh2 Qh8+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Tal, Mikhail"]
[Black "Petrosian, Tigran"]
[Result "1/2-1/2"]
[ECO "C97"]
[EventDate "1958.01.13"]
[PlyCount "145"]

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 Qc7 12.Nbd2 Bd7 13.Nf1 Nc4 14.Ne3 Nxe3 15.Bxe3 
Be6 16.Nd2 Rfe8 17.f4 Rad8 18.fxe5 dxe5 19.d5 Bd7 20.c4 Rb8 21.a4 b4 22.a5
Rf8 23.Ba4 Bxa4 24.Rxa4 Rbd8 25.Qf3 Rd6 26.Nb3 Nd7 27.Raa1 Rg6 28.Rf1 Bd6 
29.h4 Qd8 30.h5 Rf6 31.Qg4 Rf4 32.Bxf4 exf4 33.Nd2 Ne5 34.Qxf4 Nxc4 35.e5 
Nxe5 36.Ne4 h6 37.Rae1 Bb8 38.Rd1 c4 39.d6 Nd3 40.Qg4 Ba7+ 41.Kh1 f5 42.
Nf6+ Kh8 43.Qxc4 Nxb2 44.Qxa6 Nxd1 45.Qxa7 Qxd6 46.Qd7 Qxf6 47.Qxd1 Rb8 
48.Rf3 Ra8 49.Qe1 Rxa5 50.Qxb4 Re5 51.Qf4 Kh7 52.Kh2 Rd5 53.Rf1 Qg5 54.Qf3
Re5 55.Kg1 Rc5 56.Qf2 Re5 57.Qf3 Ra5 58.Kh2 Kh8 59.Kg1 Ra2 60.Qd5 Rc2 61.
Qa8+ Kh7 62.Qf3 Rc1 63.Rxc1 Qxc1+ 64.Kh2 Qc7+ 65.Kh3 Qe5 66.g4 fxg4+ 67.
Kxg4 Qg5+ 68.Kh3 Qf6 69.Qe4+ Kg8 70.Qe8+ Qf8 71.Qxf8+ Kxf8 72.Kg4 Kf7 73.
Kf5 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Krogius, Nikolai"]
[Black "Tolush, Alexander"]
[Result "1-0"]
[ECO "C06"]
[EventDate "1958.01.13"]
[PlyCount "109"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 Qb6 8.Nf3 cxd4
9.cxd4 f6 10.exf6 Nxf6 11.O-O Bd6 12.Bf4 Bxf4 13.Nxf4 O-O 14.Re1 Ne4 15.g3
Qxb2 16.Bxe4 dxe4 17.Rxe4 Bd7 18.d5 exd5 19.Qxd5+ Rf7 20.Rae1 h6 21.Nd3 
Qb6 22.Nc5 Qc7 23.Ne6 Qa5 24.Qb3 Qb6 25.Qd5 Qa5 26.Qb3 Qb6 27.Qd5 Nb4 28.
Qb3 Na6 29.Qa3 Rc8 30.Nf4 Rc2 31.Nd4 Rd2 32.Qc3 Rxa2 33.Qc4 Qb2 34.Re8+ 
Kh7 35.R8e2 Re7 36.Rxb2 Rxe1+ 37.Kg2 Rxb2 38.Nd3 Reb1 39.Nxb2 Rxb2 40.Qd5 
Be8 41.h4 Rb6 42.Qe4+ Bg6 43.Qe5 Rf6 44.f4 Nb4 45.f5 Bf7 46.g4 Nc6 47.Nxc6
Rxc6 48.g5 a6 49.Kg3 b5 50.Qe7 Kg8 51.Qd8+ Kh7 52.Qd7 Rc3+ 53.Kf2 Rc2+ 54.
Ke1 Bh5 55.g6+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Geller, Efim"]
[Black "Averbakh, Yury"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1958.01.13"]
[PlyCount "82"]

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.Nf1 d5 15.Nxe5 
dxe4 16.Ng3 Nc4 17.b3 Nxe5 18.dxe5 Qxd1 19.Bxd1 Bb4 20.Re3 Rfd8 21.Bb2 Rd2
22.a3 Bc5 23.Re2 Rxb2 24.Rxb2 Bd4 25.Rab1 Bxb2 26.Rxb2 Nd7 27.Rc2 Rxc2 28.
Bxc2 Nxe5 29.Nxe4 Bd5 30.f4 Nc6 31.Nc3 Nd4 32.Nxd5 Nxc2 33.a4 Nd4 34.axb5 
axb5 35.b4 f5 36.Kf2 Kf7 37.Ke3 Nc6 38.Kd3 Ke6 39.Nc7+ Kd7 40.Nxb5 Nxb4+ 
41.Ke3 Nc2+ 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Borisenko, Georgy"]
[Black "Boleslavsky, Isaak"]
[Result "1/2-1/2"]
[ECO "D93"]
[EventDate "1958.01.13"]
[PlyCount "46"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c6 6.Nf3 O-O 7.Qb3 Qa5 8.Nd2 Nbd7
9.Be2 Nh5 10.Bxh5 gxh5 11.Qd1 dxc4 12.Nxc4 Qf5 13.O-O Kh8 14.Rc1 b6 15.Bg3
Ba6 16.Qa4 Bb7 17.e4 Qg6 18.Ne3 e6 19.Rfd1 f5 20.exf5 exf5 21.Bf4 a5 22.
Qa3 Rf7 23.Qd6 Bf8 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "7"]
[White "Polugaevsky, Lev"]
[Black "Suetin, Alexei"]
[Result "1-0"]
[ECO "E87"]
[EventDate "1958.01.13"]
[PlyCount "55"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c5 8.g4 Ne8 9.h4
f5 10.gxf5 gxf5 11.exf5 Bf6 12.Bd3 Ng7 13.Qe2 Bxh4+ 14.Kd2 Bxf5 15.Ne4 Be7
16.Nh3 b5 17.Rag1 bxc4 18.Bc2 Qa5+ 19.Nc3 Bxc2 20.Kxc2 Na6 21.Bh6 Nb4+ 22.
Kb1 Rf7 23.Ng5 Bxg5 24.Rxg5 Rb8 25.Bxg7 Rxg7 26.Rxg7+ Kxg7 27.Qe4 Rh8 28.
Qf5 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Suetin, Alexei"]
[Black "Geller, Efim"]
[Result "1/2-1/2"]
[ECO "C81"]
[EventDate "1958.01.13"]
[PlyCount "159"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.Qe2 Be7 10.Rd1 Nc5 11.Bxd5 Bxd5 12.Nc3 Bc4 13.Rxd8+ Rxd8 14.Qe3 b4 
15.b3 Be6 16.Na4 Rd1+ 17.Ne1 Nd4 18.Bb2 Nxc2 19.Qe2 Rxa1 20.Bxa1 Nxa1 21.
Nxc5 Bxc5 22.Nd3 Bb6 23.Nxb4 O-O 24.Nc6 f6 25.h4 fxe5 26.Qxe5 Rf6 27.g4 
Bxf2+ 28.Kh1 Bxh4 29.Ne7+ Kf8 30.Nf5 Bxf5 31.gxf5 Nxb3 32.axb3 Rd6 33.Qc5 
Bd8 34.Kg2 g6 35.fxg6 hxg6 36.Qc3 Ke8 37.Qg7 Be7 38.Kf3 Kd7 39.Ke4 Re6+ 
40.Kd5 Rd6+ 41.Ke4 g5 42.Qg8 Bd8 43.Qf7+ Kc8 44.Qg8 Kb7 45.Kf5 c6 46.Qf7+ 
Kb6 47.Qc4 Rd5+ 48.Kg4 Bc7 49.Kh5 Rb5 50.Qd4+ Kb7 51.Qc4 a5 52.Qf7 Rd5 53.
Kg4 Re5 54.Kh5 Rc5 55.Qf6 Rb5 56.Qf7 Re5 57.Qc4 Bd6 58.Qf7+ Kb6 59.Qf6 Rd5
60.Qf2+ Bc5 61.Qe2 Bd6 62.Qf2+ Bc5 63.Qe2 Bg1 64.Qe1 Bd4 65.Qe2 Re5 66.Qd2
c5 67.Qg2 Re7 68.Qd5 Re5 69.Qd6+ Kb7 70.Qd7+ Kb6 71.Qd6+ Kb5 72.Qb8+ Kc6 
73.Qc8+ Kb6 74.Qb8+ Kc6 75.Qc8+ Kb6 76.Qb8+ Kc6 77.Qc8+ Kb6 78.Qb8+ Kc6 
79.Qc8+ Kb6 80.Qb8+ 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Bronstein, David"]
[Black "Krogius, Nikolai"]
[Result "1-0"]
[ECO "E80"]
[EventDate "1958.01.13"]
[PlyCount "91"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 e5 6.Nge2 Nfd7 7.Be3 Bh6 8.Bf2 O-O
9.h4 c5 10.d5 Re8 11.g4 Na6 12.g5 Bg7 13.Ng3 Nc7 14.Be3 Nf8 15.Qc2 Rb8 16.
a3 b6 17.b4 f5 18.gxf6 Bxf6 19.Qh2 h5 20.b5 Nh7 21.Ra2 Kh8 22.Rg2 Qe7 23.
Bd3 Bd7 24.Kd2 Rg8 25.Nge2 Rbe8 26.Rhg1 Qf7 27.Kc2 Bc8 28.Nc1 Ref8 29.Be2 
Bd7 30.Bd2 Qe7 31.Nd3 Be8 32.f4 Bf7 33.fxe5 dxe5 34.Nd1 a6 35.Bc3 Re8 36.
a4 Rgf8 37.Rf1 Bg7 38.Bxh5 axb5 39.axb5 Nxb5 40.cxb5 c4 41.Nb4 gxh5 42.
Rxg7 Kxg7 43.Nc6 Qd6 44.Nxe5 Nf6 45.Rxf6 Qxf6 46.Nd7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Tolush, Alexander"]
[Black "Gipslis, Aivars"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "58"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.a3 Bb7 7.Bd3 Qc7 8.Qe2 Nc6
9.Nb3 Nf6 10.f4 d6 11.O-O Be7 12.Be3 O-O 13.Rf3 b4 14.Na4 bxa3 15.bxa3 Nd7
16.Rh3 g6 17.Rf1 Rae8 18.Qd2 Bf6 19.f5 exf5 20.exf5 Re7 21.Bh6 Rfe8 22.
fxg6 fxg6 23.Rhf3 Nce5 24.Rxf6 Nxf6 25.Rxf6 Nxd3 26.Qxd3 Re1+ 27.Rf1 Qc6 
28.Qf3 Rxf1+ 29.Kxf1 Qc4+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Boleslavsky, Isaak"]
[Black "Furman, Semen"]
[Result "1/2-1/2"]
[ECO "B40"]
[EventDate "1958.01.13"]
[PlyCount "37"]

1.e4 c5 2.Nf3 e6 3.g3 d5 4.exd5 exd5 5.Bg2 Qe7+ 6.Qe2 Nc6 7.d3 Qxe2+ 8.
Kxe2 Bg4 9.Re1 O-O-O 10.Kf1 h6 11.Ne5 Nxe5 12.Rxe5 Be6 13.Re2 Ne7 14.Nd2 
Nc6 15.Nf3 Bd6 16.Bd2 Bg4 17.Bc3 d4 18.Bd2 Rhe8 19.Rxe8 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Korchnoi, Viktor"]
[Black "Kotov, Alexander"]
[Result "1/2-1/2"]
[ECO "D54"]
[EventDate "1958.01.13"]
[PlyCount "132"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.e3 O-O 6.Rc1 Nbd7 7.cxd5 exd5 8.Nf3 
c6 9.Bd3 Re8 10.O-O Nf8 11.Bxf6 Bxf6 12.b4 Be6 13.b5 cxb5 14.Bxb5 Re7 15.
Qb3 Rc7 16.Be2 Rac8 17.Ne1 Nd7 18.Nd3 Nb6 19.Rfd1 Be7 20.Bf3 Nc4 21.a4 Na5
22.Qb2 Nc4 23.Qa1 a6 24.Nf4 Ba3 25.Rc2 Bf5 26.Ra2 Bb2 27.Rxb2 Nxb2 28.Qxb2
Rxc3 29.Nxd5 Rc2 30.Qxb7 Bd7 31.Qxa6 Rc1 32.Qf1 Rxd1 33.Qxd1 Bc6 34.Nf4 
Bxf3 35.gxf3 Qg5+ 36.Kh1 Rc3 37.d5 Qe5 38.d6 Rc8 39.Qd5 Qxd5 40.Nxd5 Rd8 
41.Ne7+ Kf8 42.Nf5 g6 43.Nd4 Rxd6 44.f4 Ra6 45.Kg2 Rxa4 46.Nf3 Ke7 47.Kg3 
Ra2 48.Kg2 Kd6 49.Kg3 Kd5 50.Kg2 f6 51.Kg3 Ke4 52.h4 Ra5 53.Nd2+ Kd3 54.
Nf3 Rh5 55.Nd4 Rd5 56.Nf3 Ke2 57.Kg2 Rd1 58.Nd4+ Kd3 59.Nf3 Ke4 60.Kg3 Kf5
61.Nd4+ Ke4 62.Nf3 Rd5 63.Kg2 h6 64.Kg3 Rd1 65.Kg2 Kf5 66.Kg3 h5 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Gurgenidze, Bukhuti"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]
[ECO "A08"]
[EventDate "1958.01.13"]
[PlyCount "55"]

1.e4 c5 2.Nf3 e6 3.d3 d5 4.Nbd2 Nc6 5.g3 Bd6 6.Bg2 Nge7 7.O-O O-O 8.Re1 b6
9.c3 Ba6 10.e5 Bc7 11.Nf1 d4 12.cxd4 Nb4 13.Ng5 h6 14.Bxa8 Qxa8 15.Ne4 
Nxd3 16.Bxh6 Nxe1 17.Qg4 Ng6 18.Rxe1 gxh6 19.h4 cxd4 20.Nf6+ Kg7 21.h5 Qc6
22.hxg6 fxg6 23.Nh5+ Kh7 24.Nf4 Rxf4 25.gxf4 Bb7 26.Qh3 b5 27.b4 Bb6 28.
Nd2 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Bannik, Anatoly"]
[Black "Tal, Mikhail"]
[Result "1-0"]
[ECO "C19"]
[EventDate "1958.01.13"]
[PlyCount "103"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Nf3 Qc7 8.a4 b6 
9.Bb5+ Bd7 10.Bd3 Nbc6 11.O-O c4 12.Be2 f6 13.Re1 O-O 14.Ba3 Rf7 15.Bd6 
Qd8 16.Bf1 Nf5 17.Ba3 fxe5 18.Nxe5 Nxe5 19.Rxe5 Bxa4 20.Rxe6 Qd7 21.Re5 
Bc6 22.Qh5 g6 23.Qg5 Qd8 24.Qg4 Qd7 25.g3 Re8 26.Rae1 Rxe5 27.Rxe5 Nd6 28.
Qh4 Nf5 29.Qg5 Ng7 30.h4 Rf5 31.Qe3 Rxe5 32.Qxe5 h5 33.Qf6 Qe6 34.Qf8+ Kh7
35.Qb8 Qd7 36.Bd6 a5 37.Be5 Ne8 38.Qxb6 a4 39.Qc5 Kg8 40.Bh3 Qxh3 41.Qxc6 
Kf7 42.Qb7+ Kf8 43.Qxd5 Qc8 44.Qb5 Qa8 45.Qc5+ Kf7 46.Qxc4+ Kf8 47.d5 a3 
48.Qc5+ Kf7 49.c4 a2 50.Ba1 Qa6 51.Qd4 Nf6 52.d6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Petrosian, Tigran"]
[Black "Taimanov, Mark"]
[Result "1/2-1/2"]
[ECO "A10"]
[EventDate "1958.01.13"]
[PlyCount "46"]

1.c4 g6 2.g3 Bg7 3.Bg2 Nc6 4.Nc3 d6 5.d3 Nf6 6.Rb1 a5 7.Nf3 O-O 8.O-O Bd7 
9.a3 Qc8 10.b4 axb4 11.axb4 Nh5 12.Qd2 Bh3 13.b5 Bxg2 14.Kxg2 Nd8 15.Bb2 
e5 16.Ra1 Rxa1 17.Rxa1 f5 18.Qc2 Ne6 19.Nd5 Qd8 20.Ra7 g5 21.e4 f4 22.Qd1 
Nf6 23.h3 Kh8 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "8"]
[White "Averbakh, Yury"]
[Black "Borisenko, Georgy"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1958.01.13"]
[PlyCount "63"]

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 Nc6 14.a3 Nxd4 15.Nxd4 
exd4 16.Nf3 d5 17.e5 Ne4 18.Nxd4 Rc8 19.Nf5 Bc5 20.Bxe4 dxe4 21.b4 Ba7 22.
Qg4 g6 23.Be3 Bxe3 24.Rxe3 Qd2 25.Ne7+ Kg7 26.Nxc8 Rxc8 27.Rd1 Rc1 28.Rxc1
Qxc1+ 29.Kh2 h6 30.Qf4 Qc6 31.h4 h5 32.Re1 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Gipslis, Aivars"]
[Black "Bronstein, David"]
[Result "1-0"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "107"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 d6 6.Bc4 Be7 7.O-O Bf6 8.Be3 
Ne7 9.Qd2 Nbc6 10.Rad1 Na5 11.Bb3 Bd7 12.f4 Nxb3 13.cxb3 Rc8 14.Qf2 Qa5 
15.a3 O-O 16.e5 dxe5 17.Nxe6 exf4 18.Bb6 Qxb6 19.Qxb6 Bxe6 20.Qxb7 Rb8 21.
Qxa6 Bxb3 22.Rde1 Ng6 23.Re4 Ra8 24.Qe2 Rfc8 25.Rb4 Be6 26.Rc1 h6 27.Qf1 
Rd8 28.Rd1 Rdc8 29.Nd5 Bxd5 30.Rxd5 Rc2 31.Rdb5 Kh7 32.Rb8 Rxb8 33.Rxb8 
Bd4+ 34.Kh1 Bxb2 35.Rxb2 Rxb2 36.Qa1 Re2 37.a4 Nh4 38.Qf1 Rd2 39.g3 fxg3 
40.hxg3 Ng6 41.Qxf7 Rd1+ 42.Kg2 Ra1 43.Qc4 Ra3 44.Qb4 Ra1 45.a5 Ra2+ 46.
Kf1 Ra1+ 47.Ke2 Ne5 48.Qe4+ Ng6 49.Qf5 Kh8 50.Qc8+ Kh7 51.a6 Ne5 52.Qb7 
Ra2+ 53.Kd1 Ra1+ 54.Kc2 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Spassky, Boris"]
[Black "Tolush, Alexander"]
[Result "1-0"]
[ECO "B98"]
[EventDate "1958.01.13"]
[PlyCount "53"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7
9.O-O-O Nc6 10.Be2 Bd7 11.f5 O-O 12.g4 b5 13.a3 Rfc8 14.Kb1 Qb7 15.fxe6 
fxe6 16.e5 dxe5 17.Nb3 Be8 18.Bd3 Rab8 19.Qh3 Bg6 20.Bxg6 hxg6 21.Bxf6 
Bxf6 22.g5 Bxg5 23.Ne4 Bh6 24.Nbc5 Qa7 25.Rd7 Rc7 26.Qxe6+ Kh8 27.Qxc6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Borisenko, Georgy"]
[Black "Suetin, Alexei"]
[Result "1-0"]
[ECO "A61"]
[EventDate "1958.01.13"]
[PlyCount "84"]

1.d4 Nf6 2.c4 e6 3.Nc3 c5 4.d5 exd5 5.cxd5 d6 6.Nf3 g6 7.Nd2 Bg7 8.Nc4 O-O
9.Bf4 Ne8 10.Qd2 b6 11.e3 Ba6 12.a4 Bxc4 13.Bxc4 a6 14.O-O Nd7 15.Rab1 f5 
16.Bg3 Qf6 17.f4 Nc7 18.Rfc1 Rfe8 19.b4 cxb4 20.Rxb4 Rab8 21.Be2 Nc5 22.
Bf3 a5 23.Rbb1 N7a6 24.Be2 Nb4 25.Bb5 Re7 26.Qe2 Qf7 27.Bf2 Bxc3 28.Rxc3 
Nxd5 29.Bc4 Nxc3 30.Bxf7+ Rxf7 31.Qc2 Nxb1 32.Qxb1 Nxa4 33.Qd1 Nc5 34.Qxd6
Rc8 35.Qxb6 a4 36.Be1 Rb7 37.Qa5 Rb1 38.Kf2 Nd3+ 39.Ke2 Nc5 40.Bb4 Rb2+ 
41.Kf3 Ne4 42.Qd5+ Kg7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Taimanov, Mark"]
[Black "Bannik, Anatoly"]
[Result "1-0"]
[ECO "E80"]
[EventDate "1958.01.13"]
[PlyCount "87"]

1.c4 Nf6 2.d4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 e5 6.Nge2 Nc6 7.d5 Ne7 8.Be3 c5 9.
g4 h5 10.g5 Nh7 11.Nc1 a6 12.Qd2 Rb8 13.Rb1 b6 14.b4 Rb7 15.a4 Nf8 16.a5 
cxb4 17.Rxb4 bxa5 18.Rxb7 Bxb7 19.c5 dxc5 20.Nb3 Nd7 21.Na4 O-O 22.Nxa5 
Ba8 23.Bxa6 f5 24.gxf6 Rxf6 25.Be2 Qf8 26.O-O Nc8 27.Nb3 c4 28.Nbc5 Nxc5 
29.Nxc5 Qe8 30.Ra1 Nd6 31.Ne6 Bb7 32.Qb4 Bf8 33.Bc5 Rxe6 34.dxe6 Qc6 35.
Rc1 Ba6 36.Qb6 Qxb6 37.Bxb6 Nc8 38.Bd8 Bc5+ 39.Kg2 Nd6 40.Bc7 Kg7 41.Rd1 
Ne8 42.Bxe5+ Kf8 43.Ra1 Bc8 44.Bxc4 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Tal, Mikhail"]
[Black "Korchnoi, Viktor"]
[Result "0-1"]
[ECO "C18"]
[EventDate "1958.01.13"]
[PlyCount "70"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 Nf5 8.Bd3 h5
9.Qh3 cxd4 10.Nf3 Qc7 11.Rb1 dxc3 12.g4 Ne7 13.gxh5 Nbc6 14.Bf4 Ng6 15.Bg3
Ngxe5 16.Nxe5 Nxe5 17.Kf1 Bd7 18.Qh4 f6 19.Bxe5 Qxe5 20.Rxb7 Rb8 21.Rxb8+ 
Qxb8 22.Qg4 Kf8 23.Rg1 g5 24.hxg6 Kg7 25.h4 a5 26.Rg3 Qb1+ 27.Kg2 Qb7 28.
h5 d4+ 29.Be4 Bc6 30.Bxc6 Qxc6+ 31.Kg1 Qd5 32.Qf4 Qe5 33.h6+ Rxh6 34.Qxh6+
Kxh6 35.g7 Qxg3+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Furman, Semen"]
[Black "Averbakh, Yury"]
[Result "1/2-1/2"]
[ECO "E58"]
[EventDate "1958.01.13"]
[PlyCount "67"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 d5 6.Nf3 O-O 7.O-O Nc6 8.a3 Bxc3 
9.bxc3 Qc7 10.cxd5 exd5 11.Nh4 c4 12.Bc2 Ne4 13.Qe1 Qd8 14.g3 Bh3 15.Ng2 
Qa5 16.Bb2 f5 17.f3 Nd6 18.Rf2 Bxg2 19.Rxg2 Rae8 20.g4 Qd8 21.Qf2 f4 22.
Re1 Rxe3 23.Rxe3 fxe3 24.Qxe3 Re8 25.Qd2 Qe7 26.Rf2 Na5 27.Kg2 Qe3 28.Qd1 
Qe1 29.a4 b6 30.Qc1 Re2 31.Rxe2 Qxe2+ 32.Kg3 Nf7 33.Qf4 Qe1+ 34.Kg2 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Krogius, Nikolai"]
[Black "Boleslavsky, Isaak"]
[Result "1-0"]
[ECO "C08"]
[EventDate "1958.01.13"]
[PlyCount "86"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nf6 6.Bb5+ Bd7 7.Bxd7+ Nbxd7 
8.O-O Be7 9.dxc5 Nxc5 10.Nb3 O-O 11.Nxc5 Bxc5 12.Bg5 Rc8 13.c3 Rc6 14.Qd3 
h6 15.Bxf6 Rxf6 16.Rad1 Qb6 17.b4 Bd6 18.Qxd5 Rc8 19.Rd3 Bb8 20.Qd7 Qc6 
21.Rfd1 Kh7 22.Kf1 Qe4 23.Nd2 Qh4 24.Ne4 Qxe4 25.Qxc8 Bxh2 26.Qh3 Bc7 27.
Rd4 Qe5 28.Re1 Qg5 29.Qg4 Qb5+ 30.Kg1 Qa4 31.Qe4+ g6 32.Qe7 Qc6 33.Qc5 Bb6
34.Qxc6 bxc6 35.Rd2 c5 36.Re4 cxb4 37.cxb4 Kg7 38.a4 Rc6 39.g3 a5 40.b5 
Rf6 41.Kg2 Bc5 42.Rc2 Ba7 43.Rf4 Rxf4 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Geller, Efim"]
[Black "Gurgenidze, Bukhuti"]
[Result "1/2-1/2"]
[ECO "B36"]
[EventDate "1958.01.13"]
[PlyCount "76"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 Nxd4 7.Qxd4 d6 8.Be2 
Bg7 9.Be3 O-O 10.Qd2 Ng4 11.Bxg4 Bxg4 12.O-O Rc8 13.b3 b5 14.Nxb5 Bxa1 15.
Rxa1 a6 16.Nd4 f6 17.h3 Bd7 18.Rd1 Qc7 19.Ne2 Bc6 20.Ng3 Qb7 21.f3 Rf7 22.
Bd4 h5 23.h4 Kh7 24.Re1 Rg8 25.Bc3 Qa7+ 26.Kh2 g5 27.Nxh5 gxh4 28.Bd4 Qb8 
29.Qf4 Rg5 30.Qxh4 Kg8 31.g4 Rh7 32.f4 Ra5 33.Re2 Be8 34.Kg1 Bxh5 35.gxh5 
Raxh5 36.Rg2+ Kf7 37.Qg4 Qh8 38.Bxf6 exf6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "9"]
[White "Polugaevsky, Lev"]
[Black "Petrosian, Tigran"]
[Result "1/2-1/2"]
[ECO "E25"]
[EventDate "1958.01.13"]
[PlyCount "70"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 d5 5.a3 Bxc3+ 6.bxc3 c5 7.cxd5 Nxd5 8.dxc5
f5 9.Nh3 Bd7 10.Nf4 Qa5 11.Nxd5 exd5 12.Qd4 Nc6 13.Qe3+ Kf7 14.Qd3 Qxc5 
15.Be3 Qd6 16.g3 Rhe8 17.Bg2 Ne5 18.Qd4 Nc4 19.Bf4 Qe6 20.O-O Ne3 21.Bxe3 
Qxe3+ 22.Qxe3 Rxe3 23.f4 Be6 24.Rfd1 Rc8 25.Bxd5 Rcxc3 26.Bxb7 Rxe2 27.
Rdc1 Rb3 28.Rc7+ Kf6 29.Ba6 Rd2 30.Rxa7 Rbb2 31.Bf1 Rxh2 32.Ra6 Kf7 33.
Ra7+ Kf6 34.Ra6 Kf7 35.Ra7+ Kf6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Bannik, Anatoly"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]
[ECO "B22"]
[EventDate "1958.01.13"]
[PlyCount "57"]

1.e4 c5 2.Nf3 Nc6 3.c3 Nf6 4.e5 Nd5 5.d4 cxd4 6.cxd4 d6 7.Bc4 Nb6 8.Bb5 
Bd7 9.exd6 e6 10.Bg5 Qb8 11.Nc3 Bxd6 12.O-O O-O 13.Re1 a6 14.Bd3 Nb4 15.
Be4 h6 16.a3 N4d5 17.Bxd5 exd5 18.Bh4 Be6 19.Qb3 Nc4 20.Na4 Qa7 21.Bg3 Be7
22.Nc3 Bf6 23.Rad1 Rac8 24.Re2 Rfd8 25.h3 Qb6 26.Qxb6 Nxb6 27.Bh4 Bxh4 28.
Nxh4 Rd7 29.Ng6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Suetin, Alexei"]
[Black "Furman, Semen"]
[Result "1-0"]
[ECO "B48"]
[EventDate "1958.01.13"]
[PlyCount "82"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Bd3 Nc6 7.Be3 Nf6 8.Qe2 
Be7 9.O-O O-O 10.f4 d6 11.Nf3 b5 12.Kh1 b4 13.Na4 Bb7 14.c4 Nd7 15.Qf2 
Rad8 16.Rae1 Ncb8 17.Nd4 Nf6 18.Qc2 Nbd7 19.b3 Rfe8 20.Nf3 e5 21.Rc1 Bc6 
22.c5 Rc8 23.fxe5 dxe5 24.Bxa6 Bxe4 25.Qc4 Rb8 26.c6 Nf8 27.Bb6 Rxb6 28.
Nxb6 Ne6 29.Nd7 Bxf3 30.Rxf3 Nd4 31.Rff1 Ra8 32.Bb7 Rxa2 33.Nxe5 Ne6 34.
Nxf7 Kxf7 35.Rfe1 Kg6 36.Rxe6 Bd8 37.Qxb4 Ra5 38.Rd1 Rh5 39.Qd6 Qxd6 40.
Rexd6 Bc7 41.g3 Bxd6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Averbakh, Yury"]
[Black "Krogius, Nikolai"]
[Result "1/2-1/2"]
[ECO "C92"]
[EventDate "1958.01.13"]
[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 Nd7 10.d4 Nb6 11.Be3 Rb8 12.Nbd2 exd4 13.cxd4 Nb4 14.Nf1 c5 15.a3 Nc6
16.dxc5 dxc5 17.Bf4 Rb7 18.Bd5 Nxd5 19.exd5 Na5 20.Ne5 Bf6 21.Nc6 Qb6 22.
Bd6 Nxc6 23.dxc6 Qxc6 24.Bxf8 Kxf8 25.Qh5 h6 26.Rad1 Be6 27.Ng3 Rb8 28.Ne4
Be7 29.Qe5 Re8 30.Qf4 Ra8 31.Re3 Rc8 32.h4 Qc7 33.Nd6 Bf6 34.Qf3 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Gurgenidze, Bukhuti"]
[Black "Borisenko, Georgy"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Bronstein, David"]
[Black "Spassky, Boris"]
[Result "0-1"]
[ECO "E54"]
[EventDate "1958.01.13"]
[PlyCount "60"]

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.Qe2 Bb7 10.Rd1 cxd4 11.Rxd4 Qe7 12.Bd2 Nbd7 13.Be1 e5 14.Rh4 e4 15.Nd4 
Ne5 16.Nf5 Qc5 17.Na4 Qa5 18.Ne7+ Kh8 19.Bb3 Bxe1 20.Qxe1 Nf3+ 21.gxf3 
Qg5+ 22.Kh1 Qxh4 23.Qg1 Qh5 24.Rc1 Qxf3+ 25.Qg2 Rad8 26.Qxf3 exf3 27.Rc7 
Rd2 28.Rxb7 Rxf2 29.h3 Ne4 30.Nf5 Rg2 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Boleslavsky, Isaak"]
[Black "Gipslis, Aivars"]
[Result "1/2-1/2"]
[ECO "B47"]
[EventDate "1958.01.13"]
[PlyCount "60"]

1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.g3 Nc6 5.Bg2 Qc7 6.O-O Nf6 7.d4 cxd4 8.Nxd4 
Be7 9.b3 O-O 10.Bb2 Rd8 11.Nce2 d5 12.exd5 Nxd5 13.c4 Ndb4 14.Qb1 Nxd4 15.
Nxd4 Bd7 16.Re1 Nc6 17.Nf3 h6 18.Qe4 Be8 19.Re2 Rac8 20.h3 Rd7 21.Kh2 Qd8 
22.Qf4 Bf8 23.Rae1 b5 24.cxb5 axb5 25.a3 Rd1 26.b4 Rxe1 27.Nxe1 Ne7 28.Rd2
Qb6 29.Nf3 Nd5 30.Qd4 Qb8 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Kotov, Alexander"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "E69"]
[EventDate "1958.01.13"]
[PlyCount "96"]

1.c4 Nf6 2.Nf3 g6 3.d4 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O Nbd7 7.Nc3 e5 8.e4 c6 
9.h3 Qa5 10.Re1 Re8 11.a3 exd4 12.Nxd4 Ne5 13.Bf1 a6 14.Bd2 Qb6 15.Be3 c5 
16.Nb3 Be6 17.Nd2 Nc6 18.b4 Ng4 19.hxg4 Bxc3 20.Rc1 Bg7 21.Nb3 Rad8 22.Nd2
Qc7 23.Rb1 Ne5 24.Be2 b5 25.cxb5 axb5 26.Bxb5 Bxg4 27.Be2 Qd7 28.Bxg4 Nxg4
29.Kg2 h5 30.Bg5 Bd4 31.Re2 f6 32.Bf4 g5 33.f3 Nf2 34.Rxf2 Bxf2 35.Kxf2 
gxf4 36.gxf4 Qa7 37.Qb3+ c4+ 38.Qe3 Qxe3+ 39.Kxe3 d5 40.Rg1+ Kf7 41.Ke2 c3
42.Nb3 dxe4 43.Rc1 exf3+ 44.Kxf3 Rd3+ 45.Kf2 c2 46.Nc5 Rd2+ 47.Kf3 Re1 48.
Rxe1 Rd1 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Petrosian, Tigran"]
[Black "Geller, Efim"]
[Result "1/2-1/2"]
[ECO "D79"]
[EventDate "1958.01.13"]
[PlyCount "37"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nf3 Bg7 7.O-O O-O 8.Nc3 
Ne4 9.Nxe4 dxe4 10.Ng5 Qxd4 11.Nxe4 Nc6 12.Qb3 Bf5 13.Nc3 Qb6 14.Qxb6 axb6
15.Be3 Ra6 16.Rac1 Be6 17.a3 Rd8 18.Rfd1 Rxd1+ 19.Rxd1 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "10"]
[White "Korchnoi, Viktor"]
[Black "Taimanov, Mark"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "92"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Qf3 Nc6 7.Nb3 Nf6 8.Bf4 
d6 9.Be2 Be7 10.Qg3 O-O 11.Rd1 Rd8 12.O-O b5 13.Bh6 Ne8 14.Bd3 b4 15.Ne2 
Bf6 16.Bg5 Qe7 17.Bxf6 Qxf6 18.f4 Bb7 19.Rde1 a5 20.e5 Qe7 21.Kh1 h6 22.
Nd2 dxe5 23.fxe5 Qg5 24.Qxg5 hxg5 25.Ng3 Ba6 26.Bxa6 Rxa6 27.Nde4 Rd5 28.
Nxg5 Nxe5 29.N5e4 Nd6 30.Kg1 Nb5 31.Nh5 Ng6 32.g4 Rc6 33.Rf2 Re5 34.Kf1 a4
35.Nhg3 a3 36.b3 Ne7 37.Rfe2 Nd5 38.c4 bxc3 39.Nxc3 Rxe2 40.Ncxe2 Rc2 41.
Ra1 Ne3+ 42.Ke1 Rb2 43.Kf2 Nxg4+ 44.Kf3 f5 45.h3 Nd4+ 46.Kf4 Nxe2+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Gipslis, Aivars"]
[Black "Averbakh, Yury"]
[Result "1/2-1/2"]
[ECO "C80"]
[EventDate "1958.01.13"]
[PlyCount "105"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Re1 Nc5 7.Bxc6 dxc6 8.
Nxe5 Be7 9.d4 Ne6 10.Be3 O-O 11.c4 f6 12.Nf3 f5 13.Bd2 f4 14.Bc3 Ng5 15.
Nxg5 Bxg5 16.f3 Bf5 17.Na3 Qd7 18.Qd2 Rae8 19.Nc2 Bf6 20.Rxe8 Rxe8 21.Rd1 
c5 22.dxc5 Qxd2 23.Rxd2 Bxc3 24.bxc3 Bxc2 25.Rxc2 Re5 26.Rb2 Rxc5 27.Rxb7 
Rxc4 28.Rb3 a5 29.Rb5 Rxc3 30.Rxa5 Rc1+ 31.Kf2 Rc2+ 32.Kg1 Rc1+ 33.Kf2 
Rc2+ 34.Kg1 Kf7 35.Rf5+ Ke6 36.Rxf4 c5 37.Rg4 g6 38.Rg5 Kd6 39.Kf1 Rxa2 
40.Ke1 c4 41.Kd1 Ke6 42.h4 c3 43.h5 Rd2+ 44.Kc1 Rd5 45.Rxd5 Kxd5 46.hxg6 
hxg6 47.Kc2 Kd4 48.f4 Ke3 49.Kxc3 Kxf4 50.Kd3 g5 51.Ke2 Kg3 52.Kf1 Kh2 53.
g4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Borisenko, Georgy"]
[Black "Petrosian, Tigran"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Taimanov, Mark"]
[Black "Kotov, Alexander"]
[Result "1-0"]
[ECO "D46"]
[EventDate "1958.01.13"]
[PlyCount "136"]

1.d4 d5 2.c4 c6 3.Nf3 e6 4.Nc3 Nf6 5.e3 Nbd7 6.Bd3 Bb4 7.a3 Ba5 8.Qc2 O-O 
9.O-O Bc7 10.Bd2 dxc4 11.Bxc4 e5 12.Ba2 exd4 13.exd4 Nb6 14.h3 Be6 15.Bxe6
fxe6 16.Rfe1 Qd6 17.Ne4 Nxe4 18.Bb4 Qd5 19.Bxf8 Nxf2 20.Kxf2 Rxf8 21.Qe4 
Rf6 22.Qxd5 Nxd5 23.g3 Bb6 24.Kg2 h6 25.Re4 Kf7 26.Rae1 Ke7 27.h4 Kd6 28.
Ne5 Nc7 29.Rg4 Ne8 30.Nc4+ Ke7 31.Nxb6 axb6 32.Re3 b5 33.b3 Kf7 34.Rge4 
Ke7 35.g4 Nd6 36.Re5 Nf7 37.Rf5 Nd6 38.Rxf6 gxf6 39.Kf3 Ne8 40.Ke4 Nc7 41.
Rg3 Kd6 42.a4 bxa4 43.bxa4 Nd5 44.a5 Kc7 45.Ra3 Nb4 46.a6 bxa6 47.Ra4 Nd5 
48.Rxa6 Kb7 49.Ra1 Kb8 50.Kd3 Kb7 51.Kc4 Ne3+ 52.Kc5 Nxg4 53.Kd6 e5 54.
Rb1+ Kc8 55.dxe5 fxe5 56.Ke6 h5 57.Kf5 Kc7 58.Kg5 e4 59.Kxh5 Ne5 60.Re1 
Kd6 61.Rxe4 c5 62.Kg5 Kd5 63.Kf5 Nf7 64.Re7 Nd6+ 65.Kg6 c4 66.Re1 c3 67.h5
Nc4 68.h6 Ne5+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Spassky, Boris"]
[Black "Boleslavsky, Isaak"]
[Result "1/2-1/2"]
[ECO "B63"]
[EventDate "1958.01.13"]
[PlyCount "84"]

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.Nb3 Qb6 10.f3 a6 11.g4 Rd8 12.Be3 Qc7 13.g5 Nd7 14.h4 b5 15.g6 fxg6 
16.h5 gxh5 17.Rxh5 Nf6 18.Rg5 Ne5 19.Qg2 Bf8 20.f4 Nc4 21.Bxc4 bxc4 22.Nd4
Rb8 23.Rg1 Rb7 24.Nxe6 Bxe6 25.Bd4 d5 26.Be5 Qe7 27.exd5 Nxd5 28.Ne4 c3 
29.Nxc3 Nxc3 30.Bxc3 Bxa2 31.Qf3 Qf7 32.Bxg7 Bxg7 33.Rxg7+ Qxg7 34.Rxg7+ 
Rxg7 35.b3 Rf8 36.Qd5+ Kh8 37.Qd6 Rgf7 38.Qe5+ Kg8 39.Qg5+ Kh8 40.Qe5+ Kg8
41.Qg5+ Rg7 42.Qd5+ Kh8 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Tolush, Alexander"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "C91"]
[EventDate "1958.01.13"]
[PlyCount "74"]

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.Qd3 Bxf3 11.gxf3 Na5 12.f4 Nxb3 13.axb3 Nd7 14.Na3 exd4 15.
cxd4 c5 16.d5 Bf6 17.Nc2 Re8 18.b4 c4 19.Qd1 a5 20.Ra3 g6 21.Rg3 Bg7 22.f5
axb4 23.Nxb4 Qf6 24.Nc6 Nc5 25.fxg6 hxg6 26.Rf3 Qh4 27.e5 Bxe5 28.Rxe5 
Qg4+ 29.Kf1 dxe5 30.d6 e4 31.Ne7+ Rxe7 32.dxe7 exf3 33.Qd8+ Kh7 34.e8=Q 
Qh3+ 35.Ke1 Nd3+ 36.Kd2 Qh6+ 37.Kc3 Qxc1+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Furman, Semen"]
[Black "Gurgenidze, Bukhuti"]
[Result "1/2-1/2"]
[ECO "E64"]
[EventDate "1958.01.13"]
[PlyCount "82"]

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 c5 6.d5 d6 7.Nc3 Na6 8.O-O Nc7 
9.a4 Rb8 10.Bf4 b6 11.e4 a6 12.e5 Nh5 13.exd6 exd6 14.Bg5 Bf6 15.Bxf6 Nxf6
16.Nd2 Bf5 17.Re1 Qd7 18.Nf1 b5 19.axb5 axb5 20.b3 b4 21.Na4 Rfe8 22.Ne3 
Re5 23.Nxf5 Qxf5 24.Rxe5 Qxe5 25.Qe1 Qxe1+ 26.Rxe1 Kf8 27.Bh3 Re8 28.Rxe8+
Ncxe8 29.f3 Ke7 30.Kf2 Kd8 31.Ke3 Kc7 32.Nb2 Ng7 33.Nd3 g5 34.Nf2 h5 35.
Ne4 Nxe4 36.Kxe4 Kd8 37.Bf5 Ke7 38.f4 gxf4 39.gxf4 Kf6 40.Bd7 Ke7 41.Bc8 
Kf6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Krogius, Nikolai"]
[Black "Suetin, Alexei"]
[Result "1/2-1/2"]
[ECO "A04"]
[EventDate "1958.01.13"]
[PlyCount "74"]

1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O Nge7 7.c3 d5 8.Nbd2 O-O 
9.Re1 b5 10.exd5 Nxd5 11.Nb3 Qb6 12.a4 bxa4 13.Nbd2 Rd8 14.Qxa4 Qc7 15.Ne4
Nb6 16.Qc2 c4 17.dxc4 Nxc4 18.Bg5 Rd5 19.b3 Nb6 20.Bf6 Nb4 21.Qe2 Nd3 22.
Red1 Nc5 23.Bxg7 Kxg7 24.Rxd5 exd5 25.Nxc5 Qxc5 26.Qe5+ Kg8 27.Ng5 Bf5 28.
g4 Bxg4 29.Ne4 Nd7 30.Nxc5 Nxe5 31.Bxd5 Rc8 32.b4 Rd8 33.c4 Bf3 34.Bxf3 
Nxf3+ 35.Kg2 Ne5 36.Rxa7 Nxc4 37.Nd7 Nd6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Geller, Efim"]
[Black "Bannik, Anatoly"]
[Result "1-0"]
[ECO "D36"]
[EventDate "1958.01.13"]
[PlyCount "153"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be7 6.e3 Nbd7 7.Bd3 c6 8.Qc2 
Nf8 9.Nf3 Ng6 10.O-O-O Be6 11.h4 Nf8 12.Rhe1 N8d7 13.Kb1 h6 14.Bf4 Rc8 15.
Rg1 b5 16.Ne5 Nxe5 17.Bxe5 Bd6 18.Bf5 Bxf5 19.Qxf5 Qd7 20.Qxd7+ Kxd7 21.
Bxf6 gxf6 22.Kc2 f5 23.g3 Rhg8 24.Kd3 Rg4 25.Rc1 Rc7 26.Rc2 Rg8 27.Ne2 Rg6
28.Ra1 Rg8 29.Nc1 Re8 30.Kd2 Bb4+ 31.Ke2 Bd6 32.Nd3 Rg8 33.a4 a6 34.axb5 
axb5 35.Ra6 Rgc8 36.Rc1 Ke6 37.Rg1 Rg8 38.Rga1 Rgc8 39.Rb6 Rd8 40.Rba6 
Rdc8 41.Ra8 Kf6 42.R1a7 Rxa8 43.Rxa8 Kg7 44.Kd2 Kf6 45.Rh8 Kg7 46.Rd8 Be7 
47.Re8 Bd6 48.Nc5 f4 49.gxf4 h5 50.Nd3 Be7 51.f5 Bxh4 52.Nf4 Bxf2 53.Nxh5+
Kh7 54.Nf6+ Kg7 55.Nh5+ Kh7 56.Ke2 Bh4 57.Kf3 Bg5 58.Kg4 f6 59.b4 Ra7 60.
Re6 Rf7 61.Kf3 Kh6 62.Nf4 Rc7 63.Ng6 Ra7 64.Ne7 Ra3 65.Nxc6 Rb3 66.Ne7 
Rxb4 67.Nxd5 Rb1 68.Nxf6 Bxf6 69.Rxf6+ Kg5 70.Rf8 b4 71.Ke4 b3 72.Rg8+ Kf6
73.Rg6+ Kf7 74.Rb6 b2 75.Rb7+ Kf6 76.d5 Rd1 77.Rb6+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "11"]
[White "Polugaevsky, Lev"]
[Black "Korchnoi, Viktor"]
[Result "1/2-1/2"]
[ECO "D95"]
[EventDate "1958.01.13"]
[PlyCount "82"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Qb3 e6 7.Bd2 b6 8.Rc1 Bb7 
9.Be2 Nbd7 10.O-O Ne4 11.Rfd1 dxc4 12.Qxc4 Nd6 13.Qb3 c5 14.Be1 cxd4 15.
Nxd4 Nc5 16.Qa3 Qg5 17.Bf1 Rfd8 18.Ncb5 Nxb5 19.Nxb5 a6 20.Nd4 Bxd4 21.
exd4 Rxd4 22.Rxd4 Qxc1 23.Bd2 Qb1 24.b4 e5 25.Rc4 Ne6 26.Qe3 Rd8 27.Rc1 
Qf5 28.Bc3 Nd4 29.Bb2 Rd7 30.a4 Kg7 31.Rc4 Qe4 32.Qxe4 Bxe4 33.f4 f6 34.
fxe5 fxe5 35.Rc8 Bb7 36.Rb8 Kf6 37.h3 Nc6 38.Rf8+ Kg7 39.Re8 Rd1 40.b5 
axb5 41.axb5 Kf7 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Suetin, Alexei"]
[Black "Gipslis, Aivars"]
[Result "1-0"]
[ECO "B08"]
[EventDate "1958.01.13"]
[PlyCount "81"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 c6 5.h3 Bg7 6.Bf4 Qb6 7.Rb1 O-O 8.Bd3 Nbd7
9.O-O Re8 10.e5 dxe5 11.dxe5 Nd5 12.Nxd5 cxd5 13.b4 Nf8 14.Qd2 Ne6 15.Bg3 
Bd7 16.Rfd1 Rac8 17.a3 a6 18.h4 Rc7 19.Ng5 Bh6 20.Nxe6 Bxd2 21.Nxc7 Qxc7 
22.Rxd2 Qc3 23.Bf4 Qxa3 24.c4 dxc4 25.Bxc4 Bf5 26.Rbb2 Kg7 27.Be3 Rc8 28.
Bd5 Rc7 29.Bd4 Be6 30.Bxe6 fxe6 31.Bc5 a5 32.g3 Qf3 33.Rb1 a4 34.Re1 Qc6 
35.Be3 Qb5 36.Ra1 Qxb4 37.Rd4 Rc4 38.Rd7 Kf7 39.Bg5 b5 40.Rd8 Re4 41.Bh6 
1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Gurgenidze, Bukhuti"]
[Black "Krogius, Nikolai"]
[Result "1/2-1/2"]
[ECO "C77"]
[EventDate "1958.01.13"]
[PlyCount "76"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2 b5 6.Bb3 Be7 7.d4 d6 8.dxe5 
Nxe5 9.Nxe5 dxe5 10.O-O O-O 11.Rd1 Bd7 12.a4 Qc8 13.Bg5 Rd8 14.Nc3 c6 15.
h3 Qc7 16.Qe3 Be8 17.Rxd8 Rxd8 18.axb5 axb5 19.Ne2 h6 20.Bh4 Ng4 21.Qg3 
Bxh4 22.Qxh4 Nf6 23.Ng3 Bd7 24.Re1 Be6 25.Bxe6 fxe6 26.Nh5 Qf7 27.Nxf6+ 
Qxf6 28.Qg4 Rd2 29.Re2 Rd1+ 30.Kh2 Qf4+ 31.g3 Qxg4 32.hxg4 Kf7 33.Kg2 Ke7 
34.Kf3 Rh1 35.b3 Rd1 36.Ke3 c5 37.Rd2 Ra1 38.Ke2 Rc1 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Tal, Mikhail"]
[Black "Taimanov, Mark"]
[Result "1-0"]
[ECO "B40"]
[EventDate "1958.01.13"]
[PlyCount "149"]

1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.g3 b5 5.d4 cxd4 6.Nxd4 Bb7 7.Bg2 Nf6 8.O-O Bb4
9.e5 Bxg2 10.Kxg2 Bxc3 11.bxc3 Nd5 12.Qg4 Kf8 13.f4 h5 14.Qf3 Nc6 15.f5 
Nxd4 16.cxd4 Qc7 17.c4 bxc4 18.Ba3+ Kg8 19.Bd6 Qa7 20.Bc5 Qc7 21.Rac1 Qc6 
22.Kg1 exf5 23.Rxc4 Rc8 24.Rfc1 Nb6 25.Qxc6 Rxc6 26.Rb4 Rhh6 27.Rcb1 Nd5 
28.Rb8+ Kh7 29.R1b7 Rc7 30.Rxc7 Nxc7 31.Rd8 Ne6 32.Rxd7 Nxc5 33.dxc5 Re6 
34.Rd5 f6 35.exf6 Rxf6 36.Rd6 Kg6 37.Rb6 Kf7 38.Kf2 Re6 39.c6 Re4 40.Rxa6 
f4 41.Ra5 fxg3+ 42.hxg3 h4 43.Rc5 hxg3+ 44.Kxg3 Re8 45.Kf4 Ra8 46.Ke5 Ke7 
47.Rd5 Ra7 48.a4 g5 49.a5 g4 50.Rb5 g3 51.Rb7+ Rxb7 52.cxb7 g2 53.b8=Q 
g1=Q 54.Qc7+ Ke8 55.Qc8+ Ke7 56.Qc7+ Ke8 57.Kd6 Qd4+ 58.Kc6 Qe4+ 59.Kb6 
Qb4+ 60.Ka6 Qa4 61.Kb7 Qb4+ 62.Qb6 Qe7+ 63.Kc8 Qe4 64.Qb5+ Kf8 65.a6 Qe6+ 
66.Kc7 Qe7+ 67.Qd7 Qc5+ 68.Qc6 Qe3 69.Kb7 Qe7+ 70.Kc8 Qe3 71.Qf6+ Kg8 72.
Qd8+ Kh7 73.Qc7+ Kh6 74.a7 Qe4 75.Qb6+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Korchnoi, Viktor"]
[Black "Geller, Efim"]
[Result "1-0"]
[ECO "C97"]
[EventDate "1958.01.13"]
[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 Qc7 12.Nbd2 Bd7 13.Nf1 Rfe8 14.Ne3 g6 15.Bd2 Bf8 
16.b4 exd4 17.cxd4 cxd4 18.Nxd4 Nc4 19.Nxc4 Qxc4 20.Bg5 Bg7 21.Rb1 Nxe4 
22.Bxe4 Rac8 23.Nxb5 Qxb5 24.Bf4 Bc3 25.Bd2 Bxd2 26.Qxd2 Rxe4 27.Rxe4 Bf5 
28.Rbe1 Bxe4 29.Rxe4 Qc6 30.Qd3 Qc1+ 31.Kh2 Qc6 32.Rd4 Rd8 33.Rd5 h5 34.f4
Qc1 35.Qd4 Qc6 36.f5 Qd7 37.Qd3 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Bannik, Anatoly"]
[Black "Borisenko, Georgy"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Kotov, Alexander"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "E69"]
[EventDate "1958.01.13"]
[PlyCount "92"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nbd7 7.Nc3 e5 8.e4 c6 
9.h3 Qb6 10.d5 Nc5 11.Ne1 cxd5 12.cxd5 Nfd7 13.Rb1 a5 14.Be3 f5 15.exf5 
gxf5 16.Nd3 a4 17.a3 Qa5 18.f4 e4 19.Nb4 Nb6 20.Rf2 Nb3 21.Bf1 Bd7 22.g4 
Rac8 23.Rg2 Nc4 24.Bxc4 Rxc4 25.Ne2 Qd8 26.Qe1 Kh8 27.Kh2 Rg8 28.Qf2 Qf6 
29.Rg3 fxg4 30.Rh1 gxh3 31.Rhg1 Rcc8 32.Nc3 Qe7 33.Qc2 Nd4 34.Qxe4 Qxe4 
35.Nxe4 Nf5 36.Ng5 h6 37.Rxh3 Bxb2 38.Bf2 Rg6 39.Nd3 Rc2 40.Rg2 Bg7 41.Ne6
Bxe6 42.Rxg6 Bxd5 43.Kg1 Rc3 44.Bb6 Rxa3 45.Rh5 Bf7 46.Rxf5 Bxg6 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Petrosian, Tigran"]
[Black "Furman, Semen"]
[Result "1-0"]
[ECO "A48"]
[EventDate "1958.01.13"]
[PlyCount "89"]

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.e3 Ne4 5.Bh4 d5 6.c3 c6 7.Nbd2 Nd6 8.Be2 Nd7
9.O-O Nf5 10.Bg5 f6 11.Bf4 g5 12.Bd3 e6 13.Bxf5 exf5 14.Bd6 Nf8 15.Ba3 Be6
16.Rc1 Ng6 17.c4 Kf7 18.Ne1 Rc8 19.Nd3 Rc7 20.Nc5 Bc8 21.cxd5 cxd5 22.Qa4 
b6 23.Na6 Bxa6 24.Qxa6 Qc8 25.Rxc7+ Qxc7 26.b3 Qd7 27.Rc1 Rd8 28.Qa4 f4 
29.Qxd7+ Rxd7 30.g4 Bf8 31.Bxf8 Kxf8 32.Kf1 Ke7 33.Ke2 fxe3 34.fxe3 Nh4 
35.Nf3 Nxf3 36.Kxf3 Kd6 37.Rc8 Rf7 38.Rd8+ Ke6 39.e4 dxe4+ 40.Kxe4 Ke7 41.
Ra8 Ke6 42.d5+ Kd6 43.Re8 Rc7 44.Re6+ Kd7 45.Rc6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Boleslavsky, Isaak"]
[Black "Tolush, Alexander"]
[Result "1-0"]
[ECO "B84"]
[EventDate "1958.01.13"]
[PlyCount "85"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Qc7 8.f4 Bd7
9.Bf3 Nc6 10.Be3 Na5 11.Kh1 Be7 12.Qe1 h5 13.Rd1 O-O-O 14.Rd3 Kb8 15.Nd1 
d5 16.exd5 exd5 17.Bd2 Nc6 18.Nxc6+ Bxc6 19.Ba5 Qd7 20.Bxd8 Bxd8 21.Nc3 
Bc7 22.Qd1 Rd8 23.Nxd5 Nxd5 24.c4 Ne3 25.Rxd7 Rxd7 26.Qe2 Nxf1 27.Bxc6 
bxc6 28.Qxf1 Rd2 29.g3 Rxb2 30.Qa1 Rd2 31.Qc3 Re2 32.Qf3 Rb2 33.Qxc6 h4 
34.gxh4 Rxa2 35.Qe8+ Kb7 36.Qxf7 a5 37.Qd5+ Kb8 38.c5 Ra1+ 39.Kg2 a4 40.c6
a3 41.Qg8+ Ka7 42.Qb3 Bb6 43.Qa4+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "12"]
[White "Averbakh, Yury"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "A89"]
[EventDate "1958.01.13"]
[PlyCount "63"]

1.c4 f5 2.d4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nc3 d6 6.Nf3 O-O 7.O-O Nc6 8.d5 Na5 
9.Nd2 c5 10.Rb1 Bd7 11.b3 a6 12.Bb2 b5 13.Qc2 Qc7 14.e3 Rab8 15.Ne2 Nb7 
16.Nf4 Nd8 17.h4 Nf7 18.Nd3 Ng4 19.Bxg7 Kxg7 20.Qc3+ Kg8 21.Rfe1 Nfe5 22.
Nf4 a5 23.cxb5 Rxb5 24.Bf1 Rb7 25.Be2 Nf6 26.f3 Rfb8 27.Kg2 a4 28.Bc4 Qd8 
29.Nd3 Nxd3 30.Qxd3 axb3 31.axb3 Qf8 32.Rbc1 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Spassky, Boris"]
[Black "Suetin, Alexei"]
[Result "1-0"]
[ECO "D86"]
[EventDate "1958.01.13"]
[PlyCount "105"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 O-O 8.Ne2
Nc6 9.h4 Na5 10.Bb3 c5 11.h5 Nxb3 12.axb3 cxd4 13.cxd4 Bg4 14.f3 Bd7 15.
hxg6 hxg6 16.Be3 Bb5 17.Nc3 Qd7 18.Qd2 Rac8 19.g4 f6 20.Nd5 Kf7 21.Kf2 Rh8
22.Kg2 Rxh1 23.Rxh1 Rh8 24.Rxh8 Bxh8 25.Qc1 Bg7 26.Qh1 Qe8 27.Nf4 g5 28.
Nd5 Kg8 29.Qh5 Qd8 30.Qh2 Bc6 31.Nc7 Bd7 32.d5 b6 33.Kh3 Qc8 34.Qc2 e5 35.
Qc4 Kh7 36.d6 Kg6 37.Kg3 Qb7 38.Nd5 Bf8 39.Nxf6 Kxf6 40.Qg8 Bh6 41.Qh7 Bf8
42.Bxg5+ Kxg5 43.Qg8+ Kh6 44.Qxf8+ Kh7 45.Qe7+ Kh8 46.Qxe5+ Kg8 47.Qg5+ 
Kh8 48.Qd8+ Kg7 49.Qe7+ Kh8 50.g5 Qc8 51.Qf6+ Kg8 52.Qg6+ Kh8 53.Qh6+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Gipslis, Aivars"]
[Black "Gurgenidze, Bukhuti"]
[Result "0-1"]
[ECO "B94"]
[EventDate "1958.01.13"]
[PlyCount "152"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Bc4 Qa5 8.Qd2 
e6 9.O-O-O b5 10.Bb3 Bb7 11.Rhe1 Rc8 12.f3 Be7 13.Kb1 Nc5 14.h4 Nxb3 15.
cxb3 h6 16.Be3 b4 17.Na4 d5 18.e5 Nd7 19.f4 O-O 20.f5 Nxe5 21.fxe6 Bf6 22.
e7 Rfe8 23.Nf5 Nc4 24.Qf2 Nxe3 25.Rxe3 d4 26.Ree1 Rc6 27.g4 Bc8 28.Nxd4 
Rd6 29.Qf4 Qd5 30.Nc6 Qxd1+ 31.Rxd1 Rxd1+ 32.Kc2 Rg1 33.Nb6 Rxg4 34.Qd6 
Bf5+ 35.Kd1 Bxh4 36.Nd5 Rg1+ 37.Kd2 Rg6 38.Qc7 Rg2+ 39.Ke3 Bg5+ 40.Kf3 Rd2
41.Qe5 Bh3 42.Nc7 Bg2+ 43.Kg3 Bxc6 44.Nxe8 Bxe8 45.Qb8 Bxe7 46.Qxe8+ Bf8 
47.Qa8 Rxb2 48.Qxa6 g6 49.Qf6 Rxa2 50.Qd8 Rc2 51.Qd5 Rc3+ 52.Kg2 Rc5 53.
Qd4 Rc3 54.Qd5 h5 55.Kh2 h4 56.Kg2 h3+ 57.Kh1 Be7 58.Qe5 Bf8 59.Qd5 Be7 
60.Qe5 Bh4 61.Qb8+ Kg7 62.Qxb4 Bf6 63.Qb8 Rc5 64.Qb6 Rh5 65.b4 Be5 66.Qe3 
Rf5 67.Qc1 Rf3 68.Qe1 f6 69.Qc1 h2 70.Qd1 Ra3 71.Kg2 Ra1 72.Qd7+ Kh6 73.
Qh3+ Kg5 74.Qe3+ Bf4 75.Qc5+ Kh6 76.Qf8+ Kh5 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Bronstein, David"]
[Black "Boleslavsky, Isaak"]
[Result "1-0"]
[ECO "B41"]
[EventDate "1958.01.13"]
[PlyCount "83"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Bb4 7.Bd3 Nc6 8.Bc2 
Qc7 9.O-O Nxd4 10.Qxd4 Ng4 11.e5 h5 12.Bf4 Bc5 13.Qd2 g5 14.Bxg5 Qxe5 15.
Bf4 Qd4 16.Qxd4 Bxd4 17.h3 Nh6 18.Rfe1 Kf8 19.Bd6+ Kg8 20.Rad1 Bxc3 21.
bxc3 f5 22.c5 Rh7 23.c4 Nf7 24.Bf4 a5 25.Ba4 Nd8 26.Bd6 Nc6 27.Re3 Kf7 28.
a3 Ra6 29.Rg3 Rh8 30.h4 Kf6 31.f4 Kf7 32.Rg5 Ne7 33.Rd3 Ng8 34.Rdg3 Nf6 
35.Rg7+ Ke8 36.R3g6 Ne4 37.Rxe6+ Kd8 38.Rxe4 fxe4 39.f5 e3 40.f6 e2 41.Kf2
Re8 42.Ke1 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Tolush, Alexander"]
[Black "Averbakh, Yury"]
[Result "1/2-1/2"]
[ECO "E58"]
[EventDate "1958.01.13"]
[PlyCount "133"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 d5 6.Nf3 O-O 7.O-O Nc6 8.a3 Bxc3 
9.bxc3 Qc7 10.cxd5 exd5 11.Nh4 c4 12.Bc2 Ne4 13.Qe1 Qd8 14.g3 Bh3 15.Ng2 
f5 16.f3 Nd6 17.a4 Qd7 18.Ba3 Rae8 19.Qd2 Bxg2 20.Kxg2 Rf6 21.Rae1 h6 22.
Re2 Na5 23.Qd1 b6 24.Qb1 Nab7 25.Rfe1 Qe6 26.h3 g6 27.Bc1 Kg7 28.Bd2 Nd8 
29.Rg1 N8f7 30.Kh1 h5 31.Rh2 Rh8 32.Qf1 Qc8 33.Qg2 Qe6 34.Re1 Qe7 35.Kg1 
Re6 36.Qh1 Qf6 37.Rhe2 Rhe8 38.Qg2 Ng5 39.Rf2 Qe7 40.Rff1 Ngf7 41.Kf2 Rh8 
42.Rg1 Ne8 43.g4 hxg4 44.hxg4 Qh4+ 45.Ke2 fxg4 46.Qxg4 Qxg4 47.Rxg4 Rh2+ 
48.Kd1 Rf2 49.Reg1 Rxf3 50.Bxg6 Kf8 51.e4 Nf6 52.Bxf7 Kxf7 53.Rg7+ Ke8 54.
e5 Ne4 55.Rxa7 Re7 56.Ra8+ Kf7 57.Bh6 Ke6 58.Rg6+ Kf5 59.Rxb6 Nxc3+ 60.Kc2
Ne2 61.Rf8+ Ke4 62.Rxf3 Nxd4+ 63.Kc3 Nxf3 64.e6 Nd4 65.Bf8 Rxe6 66.Rxe6+ 
Nxe6 67.Bd6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Furman, Semen"]
[Black "Bannik, Anatoly"]
[Result "0-1"]
[ECO "D29"]
[EventDate "1958.01.13"]
[PlyCount "84"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bb3 Bb7 
9.Nc3 cxd4 10.exd4 Be7 11.Ne5 O-O 12.Nxf7 Rxf7 13.Qxe6 Qf8 14.Re1 Nc6 15.
Bf4 Rd8 16.Rad1 Bd6 17.Qf5 Ne7 18.Bxd6 Nxf5 19.Bxf8 Kxf8 20.Bxf7 Kxf7 21.
d5 h6 22.Re5 Nd6 23.f3 b4 24.Na4 Nc4 25.Re2 Nxd5 26.b3 Na3 27.Nc5 Bc6 28.
Red2 a5 29.Nd3 Re8 30.f4 Nc3 31.Rf1 Bb5 32.Rf3 Kg8 33.h4 Rd8 34.f5 Nab1 
35.Rdf2 Rxd3 36.Rf4 Rd2 37.Rxd2 Nxd2 38.Kf2 Nxa2 39.g4 Nc3 40.g5 Nde4+ 41.
Ke3 Nd5+ 42.Kxe4 Nxf4 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Krogius, Nikolai"]
[Black "Petrosian, Tigran"]
[Result "1/2-1/2"]
[ECO "B81"]
[EventDate "1958.01.13"]
[PlyCount "51"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.g4 Nc6 7.g5 Nd7 8.Be3 Nb6
9.Qd2 Ne5 10.O-O-O a6 11.f4 Nec4 12.Bxc4 Nxc4 13.Qe2 b5 14.f5 g6 15.Rhf1 
Bg7 16.h4 Bd7 17.f6 Bf8 18.h5 Qc7 19.hxg6 hxg6 20.Rh1 Rxh1 21.Rxh1 b4 22.
Nd1 e5 23.Rh8 O-O-O 24.Nf3 Be6 25.Bg1 Qc6 26.Rh4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Geller, Efim"]
[Black "Kotov, Alexander"]
[Result "1/2-1/2"]
[ECO "B47"]
[EventDate "1958.01.13"]
[PlyCount "136"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Nc3 Qc7 7.O-O Nc6 8.Bg5 
Bc5 9.Nb3 Be7 10.f4 d6 11.Qd3 b5 12.Rae1 Bb7 13.Bd1 b4 14.Na4 a5 15.c4 e5 
16.Qe3 h6 17.Bxf6 Bxf6 18.Nb6 exf4 19.Nxa8 Bxa8 20.Qxf4 Bxb2 21.c5 Be5 22.
cxd6 Bxd6 23.Qh4 O-O 24.Kh1 Be5 25.Nd2 Bc3 26.Re2 Nd4 27.Ref2 Bc6 28.Bh5 
f6 29.Nf3 Bb5 30.Rd1 Nc6 31.Qg4 Qc8 32.Rd5 Bc4 33.Qxc8 Rxc8 34.Bg4 Bxd5 
35.exd5 Na7 36.Bxc8 Nxc8 37.Re2 Kf7 38.Re6 a4 39.Rc6 Ne7 40.Rc7 Ke8 41.d6 
Nf5 42.a3 Nxd6 43.axb4 Nb5 44.Rc5 a3 45.Rxb5 a2 46.Ra5 a1=Q+ 47.Rxa1 Bxa1 
48.g4 Kd7 49.Kg2 Kc6 50.Nh4 g5 51.Nf5 Bc3 52.Kf3 Bxb4 53.Ke4 Kd7 54.Kd5 
Bc3 55.Nxh6 Be5 56.h3 Ke7 57.Nf5+ Kf7 58.Ne3 Bh2 59.Nc4 Bc7 60.Nb2 Bb8 61.
Nd3 Ba7 62.Nb4 Bg1 63.Na2 Ba7 64.Nc3 Bb8 65.Nb5 Be5 66.Na7 Bg3 67.Nc6 Bh2 
68.Nd8+ Ke7 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Polugaevsky, Lev"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "E46"]
[EventDate "1958.01.13"]
[PlyCount "133"]

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.f3 Nc7 12.Qe1 c5 13.Qf2 Ne6 14.Nfe2 Bd7 15.g4 Qb6 
16.h4 Bc6 17.g5 Ne8 18.Rb1 a4 19.Bc2 Qa7 20.Rd1 Nd6 21.e4 cxd4 22.Nxd5 Bd8
23.Kg2 Rc8 24.Bd3 f5 25.gxf6 Bxf6 26.Bd2 Nc5 27.Nxf6+ Rxf6 28.Qxd4 Rcf8 
29.Bf4 Nb5 30.Bc4+ Kh8 31.Qe3 b6 32.Ng3 Qa8 33.Bxb5 Bxb5 34.Bg5 Rxf3 35.
Qxf3 Rxf3 36.Rd8+ Rf8 37.Rxa8 Rxa8 38.Rd1 Nd3 39.Rd2 Rf8 40.Nf5 Bc6 41.Nd6
Ne1+ 42.Kg3 Rf3+ 43.Kh2 h6 44.Bd8 Rb3 45.Nf7+ Kh7 46.Ne5 Bxe4 47.Re2 Nf3+ 
48.Nxf3 Bxf3 49.Rf2 Bg4 50.Rg2 Bf3 51.Rf2 Ba8 52.Bc7 Kg6 53.Be5 Re3 54.Bc3
Re4 55.Kg3 h5 56.Rf4 Re2 57.Rxa4 Bd5 58.Rb4 Rg2+ 59.Kh3 Rg4 60.Rxb6+ Kf7 
61.Rb4 Rxb4 62.Bxb4 Bb3 63.Kg3 Ke6 64.Kf4 Kd5 65.Bf8 g6 66.Be7 Kc4 67.Ke5 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "13"]
[White "Borisenko, Georgy"]
[Black "Korchnoi, Viktor"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Averbakh, Yury"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "E54"]
[EventDate "1958.01.13"]
[PlyCount "83"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.e3 O-O 6.Bd3 d5 7.O-O dxc4 8.Bxc4 b6
9.Qe2 Bb7 10.Rd1 cxd4 11.exd4 Bxc3 12.bxc3 Nd5 13.Bd2 Qc7 14.Rac1 Nf4 15.
Bxf4 Qxf4 16.Qe3 Qc7 17.Bb3 Nd7 18.Re1 Rad8 19.h3 Qd6 20.Ne5 Nxe5 21.Qxe5 
Qxe5 22.Rxe5 Rd6 23.a4 a5 24.Re3 Rc8 25.Rb1 Kf8 26.Kf1 g6 27.g3 Ke7 28.Ke1
h5 29.h4 Kd7 30.Kd2 Kc7 31.f4 Bc6 32.Re5 Kd7 33.Bc2 Kc7 34.Bb3 Rcd8 35.Bc2
Bd5 36.Bd3 Kb7 37.Bb5 Rc8 38.Kd3 Bf3 39.Rb2 Bg4 40.Kd2 Kc7 41.Ba6 Rcd8 42.
Bb5 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Suetin, Alexei"]
[Black "Tolush, Alexander"]
[Result "1-0"]
[ECO "B84"]
[EventDate "1958.01.13"]
[PlyCount "89"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Qc7 8.f4 Bd7
9.Be3 Nc6 10.Qe1 Be7 11.Qg3 h5 12.Rad1 O-O-O 13.h3 Rdg8 14.Nf3 h4 15.Qf2 
Nh5 16.Rfe1 Kb8 17.a3 Nd8 18.Bd3 f6 19.f5 g5 20.fxe6 Bxe6 21.Nd4 g4 22.
Nxe6 Nxe6 23.Nd5 Qd8 24.hxg4 Rxg4 25.Ba7+ Ka8 26.Bb6 Qe8 27.Be2 Rg7 28.Bc7
Nc5 29.b4 h3 30.g4 Rhg8 31.bxc5 Rxg4+ 32.Bxg4 Rxg4+ 33.Kh2 Rg2+ 34.Qxg2 
hxg2 35.cxd6 Bxd6+ 36.Bxd6 Qg6 37.Kg1 Qg4 38.Ne3 Qxe4 39.Nxg2 Qc6 40.Bh2 
Ka7 41.Kh1 a5 42.Rd6 Qc8 43.Bg1+ b6 44.Re7+ Ka8 45.Bxb6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Taimanov, Mark"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]
[ECO "E06"]
[EventDate "1958.01.13"]
[PlyCount "38"]

1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 Be7 5.O-O O-O 6.d4 c6 7.b3 b6 8.Bb2 Nbd7 
9.Nc3 Bb7 10.Qc2 c5 11.cxd5 Nxd5 12.Nxd5 Bxd5 13.e4 Bb7 14.d5 exd5 15.exd5
Bf6 16.Rad1 Bxb2 17.Qxb2 Re8 18.Rfe1 Qf6 19.Qxf6 Nxf6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Tal, Mikhail"]
[Black "Geller, Efim"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1958.01.13"]
[PlyCount "65"]

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 Bb7 12.b4 cxb4 13.cxb4 Nc4 14.Nbd2 d5 15.exd5 
exd4 16.Nxc4 bxc4 17.Qxd4 Bxb4 18.Rb1 Bxe1 19.Rxb7 Re8 20.d6 Qc8 21.Bg5 
Re2 22.Rc7 Qe6 23.Nxe1 Rxe1+ 24.Kh2 Rd8 25.Bxf6 gxf6 26.Re7 Qxd6+ 27.Qxd6 
Rxd6 28.Rxe1 Rd2 29.Rc1 Rxf2 30.Be4 Rxa2 31.Rxc4 a5 32.Rc8+ Kg7 33.Rc7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Gurgenidze, Bukhuti"]
[Black "Spassky, Boris"]
[Result "1-0"]
[ECO "A08"]
[EventDate "1958.01.13"]
[PlyCount "163"]

1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 d5 5.Nbd2 Bd6 6.Bg2 Nge7 7.O-O O-O 8.Re1 b6
9.c3 Bc7 10.Nb3 a5 11.a4 Ba6 12.e5 Ng6 13.d4 c4 14.Nbd2 f6 15.exf6 Qxf6 
16.b3 cxb3 17.Qxb3 Kh8 18.Ba3 Rfd8 19.h4 h6 20.Re3 Nce7 21.Rae1 Bc8 22.Ne5
Nxe5 23.dxe5 Qf7 24.Bxe7 Qxe7 25.Nf3 b5 26.axb5 Bb6 27.Nd4 a4 28.Qd1 Bd7 
29.Bf1 Rdb8 30.Bd3 Bxd4 31.cxd4 Bxb5 32.Bb1 Rc8 33.Qg4 Be8 34.Qe2 Bf7 35.
f4 a3 36.f5 exf5 37.e6 Be8 38.Ba2 Ra4 39.Qd3 Qf6 40.Re5 Bg6 41.e7 f4 42.
Qxg6 Qxg6 43.e8=Q+ Rxe8 44.Rxe8+ Qxe8 45.Rxe8+ Kh7 46.Bb1+ g6 47.h5 Kg7 
48.hxg6 fxg3 49.Re7+ Kg8 50.Re2 Rxd4 51.Bf5 Kf8 52.Ra2 Rf4 53.Bd3 Rf3 54.
Rxa3 h5 55.Kg2 Re3 56.Ra8+ Kg7 57.Ra7+ Kf8 58.Bf5 h4 59.Ra2 Re5 60.Bd3 Re3
61.Rd2 Kg7 62.Bc2 Re1 63.Bf5 Re5 64.Bb1 Re1 65.Rb2 Kf8 66.Bf5 Re5 67.Rb8+ 
Kg7 68.Rb7+ Kg8 69.Bg4 Kf8 70.Rf7+ Kg8 71.Rd7 Kh8 72.Rh7+ Kg8 73.Rd7 Kh8 
74.Kf1 Rg5 75.Rh7+ Kg8 76.Be6+ Kf8 77.Rf7+ Ke8 78.Bd7+ Kd8 79.g7 g2+ 80.
Kg1 Kc7 81.Bf5+ Kd6 82.Rf6+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Korchnoi, Viktor"]
[Black "Furman, Semen"]
[Result "1/2-1/2"]
[ECO "B63"]
[EventDate "1958.01.13"]
[PlyCount "42"]

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
Nxd4 9.Qxd4 O-O 10.e5 dxe5 11.Qxe5 Bd7 12.h4 Rc8 13.Rh3 Rc5 14.Qe3 Qc8 15.
Rxd7 Qxd7 16.Bxf6 gxf6 17.Ne4 Re5 18.Bd3 Kh8 19.Qh6 Rxe4 20.Bxe4 f5 21.Bf3
Rc8 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Kotov, Alexander"]
[Black "Borisenko, Georgy"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Petrosian, Tigran"]
[Black "Gipslis, Aivars"]
[Result "1-0"]
[ECO "D40"]
[EventDate "1958.01.13"]
[PlyCount "80"]

1.c4 Nf6 2.Nf3 e6 3.Nc3 c5 4.e3 d5 5.d4 Be7 6.cxd5 exd5 7.dxc5 Bxc5 8.Be2 
O-O 9.O-O Nc6 10.b3 Be6 11.Bb2 Qe7 12.Nb5 a6 13.Nbd4 Nxd4 14.Nxd4 Ba3 15.
Qc1 Bxb2 16.Qxb2 Rac8 17.Rac1 h6 18.Bd3 Qd6 19.h3 Nd7 20.Nf5 Bxf5 21.Bxf5 
g6 22.Bg4 h5 23.Bf3 Ne5 24.Be2 Rxc1 25.Rxc1 Rd8 26.Rd1 Qf6 27.Qd4 Qe7 28.
Qb6 Rd7 29.b4 Nc6 30.Bxa6 Nxb4 31.Bb5 Rc7 32.a3 Nc2 33.Rxd5 Nxa3 34.Qd4 
Rc8 35.Bd3 b5 36.Bxg6 fxg6 37.Rd7 Qf8 38.Qd5+ Kh8 39.Qe5+ Kg8 40.Qe6+ Kh8 
1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "14"]
[White "Bannik, Anatoly"]
[Black "Krogius, Nikolai"]
[Result "1/2-1/2"]
[ECO "C96"]
[EventDate "1958.01.13"]
[PlyCount "63"]

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 Nc4 15.Nxc4 
Rxc4 16.Bd3 Rc8 17.a4 bxa4 18.Rxa4 Ra8 19.Be3 Qd7 20.Nd2 Rfb8 21.Nc4 Bd8 
22.Qa1 Bc8 23.Rc1 Ne8 24.Rc3 f5 25.exf5 Nf6 26.Na5 e4 27.Be2 Bxa5 28.Rxa5 
Qxf5 29.Qc1 Bb7 30.Bd4 Rc8 31.g4 Qg6 32.Bxf6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Geller, Efim"]
[Black "Taimanov, Mark"]
[Result "1/2-1/2"]
[ECO "B41"]
[EventDate "1958.01.13"]
[PlyCount "84"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Qc7 7.Be3 Bb4 8.Bd3 
Nc6 9.Rc1 Ne5 10.a3 Nxd3+ 11.Qxd3 Be7 12.h3 O-O 13.O-O b6 14.f4 Bb7 15.b4 
Rac8 16.e5 Ne8 17.Na4 f6 18.Nf3 Bxf3 19.Rxf3 fxe5 20.Nxb6 Rd8 21.f5 Nd6 
22.fxe6 dxe6 23.Rxf8+ Rxf8 24.c5 Nf5 25.Qd7 Qxd7 26.Nxd7 Rc8 27.Re1 e4 28.
Bf4 g5 29.Be5 Rd8 30.c6 Rc8 31.Rc1 Bd6 32.a4 e3 33.Bxd6 Nxd6 34.Kf1 Nf5 
35.Ne5 Nd4 36.Rc4 Nf5 37.Ke2 Kg7 38.b5 axb5 39.axb5 Ra8 40.Rc1 Ra2+ 41.Kd3
Rd2+ 42.Kc3 Rd5 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Spassky, Boris"]
[Black "Petrosian, Tigran"]
[Result "1/2-1/2"]
[ECO "C54"]
[EventDate "1958.01.13"]
[PlyCount "39"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.Qe2 O-O 6.d3 d5 7.Bb5 dxe4 8.dxe4 
Qe7 9.Bg5 Nd8 10.Bc1 Bg4 11.h3 Bh5 12.g4 Bg6 13.Bd3 Bd6 14.Nh4 Ne6 15.Nf5 
Bxf5 16.exf5 Nf4 17.Bxf4 exf4 18.Nd2 h6 19.Rg1 Kh8 20.Kf1 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Gipslis, Aivars"]
[Black "Bannik, Anatoly"]
[Result "1-0"]
[ECO "C90"]
[EventDate "1958.01.13"]
[PlyCount "119"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.d3 d6 
9.c3 Na5 10.Bc2 c5 11.Nbd2 Nc6 12.Nf1 Re8 13.Ne3 Qc7 14.Bd2 Be6 15.Ng5 
Rad8 16.Qf3 Bf8 17.a4 b4 18.Nd5 Bxd5 19.exd5 bxc3 20.bxc3 Ne7 21.c4 h6 22.
Ne4 Nh7 23.a5 Rb8 24.Ba4 Red8 25.Reb1 Rxb1+ 26.Rxb1 Rb8 27.Qd1 Nf5 28.Rxb8
Qxb8 29.Qb3 Qxb3 30.Bxb3 Nd4 31.Ba4 f5 32.Ng3 Be7 33.Bb5 Bd8 34.Bxa6 Nb3 
35.Bb5 Nxa5 36.Nxf5 Nb3 37.Be3 Bc7 38.f4 Nd4 39.Nxd4 exd4 40.Bd2 Nf6 41.h3
Kf7 42.Kf2 Bd8 43.Kf3 Be7 44.Bc6 Bf8 45.g4 g6 46.Bb7 Be7 47.Bc8 Nh7 48.Kg3
Kg7 49.h4 g5 50.fxg5 hxg5 51.h5 Kh6 52.Bf5 Nf6 53.Kf3 Bd8 54.Ke2 Bc7 55.
Be1 Kg7 56.Kd1 Ng8 57.Kc2 Bd8 58.Bg3 Bc7 59.Kb3 Ne7 60.Be6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Borisenko, Georgy"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Boleslavsky, Isaak"]
[Black "Averbakh, Yury"]
[Result "1/2-1/2"]
[ECO "B66"]
[EventDate "1958.01.13"]
[PlyCount "114"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 a6 7.Qd2 e6 8.O-O-O 
h6 9.Bf4 Bd7 10.Nxc6 Bxc6 11.f3 Qb6 12.Bc4 O-O-O 13.Bb3 Be7 14.Be3 Qa5 15.
Kb1 Rhe8 16.Nd5 Qxd2 17.Nxe7+ Rxe7 18.Rxd2 Kc7 19.Rhd1 Red7 20.c4 a5 21.
Bc2 e5 22.b3 Nh7 23.a3 Ng5 24.b4 b6 25.Bb3 Ne6 26.Kb2 axb4 27.axb4 Ra8 28.
Ra1 Rxa1 29.Kxa1 Rd8 30.Kb2 Rb8 31.Kc3 Ra8 32.Ra2 Rxa2 33.Bxa2 Nf4 34.g3 
Nh3 35.Bb3 Ng5 36.Bd1 Nh7 37.Be2 Nf6 38.Kd2 Bd7 39.Bf1 Be6 40.Kd3 Nd7 41.
Kc3 Nb8 42.f4 f6 43.f5 Bf7 44.Be2 Nc6 45.Bd1 Kb7 46.h3 Kc7 47.Ba4 Bg8 48.
Bd1 Bf7 49.Ba4 Bg8 50.g4 Bf7 51.h4 Bg8 52.Bb3 Kb7 53.Bd1 Bf7 54.Bd2 Kc7 
55.Be3 Kb7 56.Ba4 Kc7 57.Bb3 Kb7 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Tolush, Alexander"]
[Black "Gurgenidze, Bukhuti"]
[Result "0-1"]
[ECO "B34"]
[EventDate "1958.01.13"]
[PlyCount "54"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Nb3 Nf6 7.Be2 O-O 8.h4 
a5 9.h5 a4 10.Nc5 Qa5 11.Be3 d6 12.Nxa4 Nxe4 13.Kf1 Nxc3 14.Nxc3 Be6 15.
hxg6 hxg6 16.Qd2 Rfc8 17.a3 Ne5 18.Bd4 Nc4 19.Bxc4 Bxc4+ 20.Kg1 Bxd4 21.
Qxd4 Qe5 22.Qxe5 dxe5 23.Re1 Ra5 24.f4 exf4 25.Rxe7 Rd8 26.Rxb7 Rd2 27.Ne4
Rd1+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Bronstein, David"]
[Black "Suetin, Alexei"]
[Result "1-0"]
[ECO "B50"]
[EventDate "1958.01.13"]
[PlyCount "149"]

1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Qc2 Nc6 5.d4 e5 6.dxe5 dxe5 7.Bb5 Qc7 8.Nbd2 
Bd7 9.Nf1 a6 10.Be2 Nd8 11.Bg5 Be7 12.Ne3 Bc6 13.Bxf6 Bxf6 14.a4 g6 15.Bc4
Ne6 16.g3 Rd8 17.h4 O-O 18.a5 Rfe8 19.Nd2 Bg7 20.Nd5 Qb8 21.h5 Nc7 22.Ne3 
Qc8 23.Nf3 Bb5 24.b3 Ne6 25.Nd5 Bc6 26.hxg6 hxg6 27.O-O-O Bb5 28.Rh4 Bxc4 
29.bxc4 Nc7 30.Nb6 Rxd1+ 31.Qxd1 Qd8 32.Qxd8 Rxd8 33.Kc2 Ne8 34.Rh1 Nf6 
35.Re1 Ng4 36.Re2 f5 37.exf5 gxf5 38.Nh4 f4 39.Nd5 fxg3 40.fxg3 Rf8 41.Nf5
Rf7 42.Nd6 Rd7 43.Ne4 Rf7 44.Nxc5 e4 45.Nxe4 Ne5 46.c5 Nc6 47.Nd6 Rd7 48.
Re8+ Kh7 49.Nb6 Rc7 50.Nd5 Rd7 51.g4 Nxa5 52.Re6 Nc6 53.Nb6 Rc7 54.Nd5 Rd7
55.Nf6+ Bxf6 56.Rxf6 Ne5 57.g5 Rc7 58.Ne4 Rc6 59.Rd6 Rxd6 60.cxd6 b6 61.
Nd2 Kg6 62.Nc4 Nd7 63.Kd3 b5 64.Na5 Kxg5 65.Ke4 Kf6 66.Kd5 Kf5 67.Nb3 Nb8 
68.Nd4+ Kf6 69.Kc5 Nd7+ 70.Kc6 Nf8 71.Nb3 Ke5 72.Nc5 a5 73.d7 Nxd7 74.
Nxd7+ Ke4 75.Nc5+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Krogius, Nikolai"]
[Black "Korchnoi, Viktor"]
[Result "0-1"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "82"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.Bd3 Qc7 7.O-O Bb7 8.Qe2 
Nc6 9.Nxc6 dxc6 10.a4 b4 11.Nd1 c5 12.Ne3 Ne7 13.b3 Nc6 14.Bb2 Bd6 15.h3 
Be5 16.Bxe5 Nxe5 17.f4 Nc6 18.e5 Nd4 19.Qh5 O-O-O 20.Nc4 Nxb3 21.Nd6+ Rxd6
22.exd6 Qc6 23.d7+ Kc7 24.Qe5+ Kxd7 25.Qxg7 Nxa1 26.f5 Qxg2+ 27.Qxg2 Bxg2 
28.fxe6+ fxe6 29.Kxg2 c4 30.Be4 Nxc2 31.Bxc2 b3 32.Be4 Kd6 33.Rc1 Kc5 34.
Kf3 Kb4 35.Ke3 c3 36.Rb1 Ka3 37.Ra1+ Kb2 38.Rb1+ Ka2 39.Rg1 c2 40.Kd2 Rd8+
41.Kc1 Rc8 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "15"]
[White "Furman, Semen"]
[Black "Kotov, Alexander"]
[Result "1/2-1/2"]
[ECO "A21"]
[EventDate "1958.01.13"]
[PlyCount "146"]

1.c4 e5 2.g3 g6 3.Bg2 Bg7 4.Nc3 Ne7 5.e3 O-O 6.Nge2 d6 7.O-O Nd7 8.b3 Kh8 
9.d4 f5 10.Bb2 c6 11.d5 c5 12.f4 e4 13.Qd2 Nf6 14.a4 Bd7 15.Nd1 Qc7 16.Nf2
b6 17.Rfc1 Rfb8 18.Nc3 a6 19.Bf1 Qd8 20.Be2 Ne8 21.g4 Ng8 22.Kg2 Nc7 23.
gxf5 gxf5 24.Rg1 Nf6 25.Kh1 Qe7 26.Rg3 Rg8 27.Rag1 Raf8 28.R1g2 h6 29.Qc1 
Kh7 30.Qg1 Bh8 31.Bd1 Rxg3 32.Rxg3 b5 33.Bc2 bxc4 34.bxc4 Rb8 35.Ba1 Rb4 
36.Qf1 Be8 37.Na2 Rb8 38.Qh3 Bg6 39.Bc3 Qf7 40.Rg1 Ng8 41.Rb1 Rxb1+ 42.
Bxb1 Na8 43.Bc2 Qb7 44.Bxh8 Kxh8 45.Nd1 Nb6 46.Qf1 Bh5 47.h3 Qg7 48.Kh2 
Bf3 49.Bb3 Qa1 50.a5 Na4 51.Qe1 Qb1 52.Nc1 Qxc1 53.Bxa4 Bxd1 54.Bxd1 Nf6 
55.Kg3 Qxc4 56.Be2 Qb3 57.Qc1 Qb4 58.Bxa6 Qxa5 59.Bc8 Qa2 60.Qc3 Kg7 61.
Bxf5 Qxd5 62.Bc8 Qd3 63.Qc1 c4 64.Be6 d5 65.f5 Qe2 66.Qa3 Qf3+ 67.Kh2 Qf2+
68.Kh1 Qe1+ 69.Kg2 Qe2+ 70.Kg3 Qf3+ 71.Kh2 Qf2+ 72.Kh1 Qe1+ 73.Kg2 Qe2+ 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Suetin, Alexei"]
[Black "Boleslavsky, Isaak"]
[Result "1/2-1/2"]
[ECO "C81"]
[EventDate "1958.01.13"]
[PlyCount "74"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.Qe2 Be7 10.Rd1 Nc5 11.Bxd5 Bxd5 12.Nc3 Bc4 13.Rxd8+ Rxd8 14.Qe3 b4 
15.b3 Be6 16.Ne4 Rd1+ 17.Ne1 Nd4 18.Bb2 Nxc2 19.Qe2 Rxa1 20.Bxa1 Nxa1 21.
Nxc5 Bxc5 22.Nd3 Bb6 23.Nxb4 O-O 24.Nc6 f6 25.h4 fxe5 26.Qxe5 Rf6 27.Nd4 
Bf7 28.Nf3 Nc2 29.Qe4 Bg6 30.Qd5+ Kf8 31.h5 Be8 32.Qe4 Bxh5 33.Qxc2 Bxf3 
34.gxf3 Rxf3 35.Qxh7 Rxf2 36.a4 Rf6+ 37.Kg2 a5 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Bannik, Anatoly"]
[Black "Spassky, Boris"]
[Result "1/2-1/2"]
[ECO "B50"]
[EventDate "1958.01.13"]
[PlyCount "84"]

1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Qc2 g6 5.d4 Bg7 6.dxc5 dxc5 7.Be3 Nbd7 8.Nbd2 
O-O 9.e5 Ng4 10.e6 fxe6 11.Bg5 Nge5 12.h4 Qe8 13.O-O-O b6 14.Be3 Rf5 15.h5
gxh5 16.Qb3 Nf6 17.Nh4 Kh8 18.Bb5 Qf8 19.Nxf5 exf5 20.Nf3 Nxf3 21.Bc6 c4 
22.Qb5 Bd7 23.Rxd7 Nxd7 24.Bxa8 Nfe5 25.Bd5 f4 26.Bd4 a6 27.Qxa6 Nd3+ 28.
Kb1 e5 29.Bxc4 Nxb2 30.Kxb2 exd4 31.Rxh5 Nc5 32.Qb5 f3 33.Bd3 fxg2 34.
Rxh7+ Kg8 35.Qc4+ Qf7 36.Rxg7+ Kxg7 37.Qxd4+ Qf6 38.Qg4+ Kf8 39.Qc8+ Ke7 
40.Qc7+ Nd7 41.Qg3 Qd6 42.Qg5+ Nf6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Taimanov, Mark"]
[Black "Borisenko, Georgy"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Gurgenidze, Bukhuti"]
[Black "Bronstein, David"]
[Result "1/2-1/2"]
[ECO "B66"]
[EventDate "1958.01.13"]
[PlyCount "78"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 e6 7.Qd2 a6 8.Be2 
Bd7 9.O-O Rc8 10.Rad1 Be7 11.Nb3 O-O 12.Bxf6 gxf6 13.Qh6 Kh8 14.Qh5 Rg8 
15.f4 Rg6 16.Kh1 Qb6 17.a3 Rcg8 18.Bf3 Bf8 19.Ne2 f5 20.exf5 Rh6 21.Qxf7 
Qd8 22.fxe6 Bxe6 23.Qxb7 Qh4 24.Kg1 Ne7 25.Nbd4 Bc8 26.Qb4 Bg7 27.Qe1 
Qxh2+ 28.Kf2 Bf6 29.Ke3 Nf5+ 30.Nxf5 Bxf5 31.Rh1 Qxh1 32.Qxh1 Rxh1 33.Rxh1
Bxb2 34.Kd2 Bxa3 35.Ra1 Bc5 36.Rxa6 Re8 37.Ra8 Be3+ 38.Kd1 Rxa8 39.Bxa8 
Bg4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Tal, Mikhail"]
[Black "Furman, Semen"]
[Result "1-0"]
[ECO "C65"]
[EventDate "1958.01.13"]
[PlyCount "75"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d4 exd4 5.e5 Ne4 6.Qe2 Nc5 7.O-O Be7 8.Rd1 
O-O 9.Bxc6 bxc6 10.Nxd4 Qe8 11.Nc3 f6 12.Nf5 Bd8 13.Qc4+ Ne6 14.Nd4 fxe5 
15.Nxe6 d5 16.Nxc7 Qf7 17.N3xd5 cxd5 18.Nxd5 Qxf2+ 19.Kh1 Be6 20.Be3 Qf7 
21.Qe4 Rc8 22.c3 Re8 23.Rd2 Rb8 24.Rad1 Bf5 25.Qa4 Bb6 26.Rf1 Qh5 27.Bxb6 
axb6 28.Rdf2 Bd3 29.g4 Qh4 30.Nxb6 Bxf1 31.Rxf1 Rf8 32.Qc4+ Kh8 33.Nd7 
Rxf1+ 34.Qxf1 Re8 35.Nxe5 Qe7 36.Nf3 Qe4 37.Kg2 Qxg4+ 38.Kf2 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Korchnoi, Viktor"]
[Black "Gipslis, Aivars"]
[Result "1/2-1/2"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "88"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.Bd3 Bb7 7.O-O Nc6 8.Nxc6 
dxc6 9.a4 Nf6 10.Qe2 b4 11.Nb1 Be7 12.Nd2 O-O 13.e5 Nd5 14.Qe4 g6 15.Nf3 
c5 16.Qg4 Qd7 17.Re1 Nc7 18.Bh6 Bxf3 19.Qxf3 Rfd8 20.Be4 Nd5 21.g3 Ra7 22.
h4 Qe8 23.Red1 Rad7 24.Bd3 Ra7 25.Qe2 Qc6 26.h5 Bf8 27.Bxf8 Kxf8 28.Qf3 
Kg8 29.Be4 Rad7 30.Re1 c4 31.Kg2 Qc5 32.Rh1 Qe7 33.hxg6 fxg6 34.Qg4 Qf7 
35.Rh6 Rf8 36.Qe2 Qg7 37.Bxd5 Rxd5 38.Rh4 Rxe5 39.Qxc4 Qb7+ 40.Kg1 a5 41.
Rd4 Qf3 42.Rf1 Rh5 43.Rh4 Rxh4 44.Qxh4 Rc8 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Kotov, Alexander"]
[Black "Krogius, Nikolai"]
[Result "0-1"]
[ECO "D83"]
[EventDate "1958.01.13"]
[PlyCount "194"]

1.c4 Nf6 2.d4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Qb3 c5 7.cxd5 cxd4 8.exd4 
Nbd7 9.Be2 Nb6 10.Bf3 e6 11.d6 Ne8 12.Nge2 Nxd6 13.O-O Ndc4 14.Rad1 Bd7 
15.Qc2 Bc6 16.Bxc6 bxc6 17.Ne4 Qd5 18.Bh6 Nd6 19.Bxg7 Kxg7 20.Nxd6 Qxd6 
21.Nc3 Nd7 22.Rfe1 Nf6 23.Na4 Rad8 24.Nc5 Qb8 25.a3 Rd5 26.Na6 Qb6 27.Nb4 
Rxd4 28.Rxd4 Qxd4 29.Rd1 Qb6 30.Rd6 a5 31.Rxc6 Qb8 32.Nd3 Rd8 33.g3 Qb5 
34.Nf4 Qe5 35.Ne2 Rb8 36.Nc3 Qe1+ 37.Kg2 Rd8 38.Qe2 Qxe2 39.Nxe2 Rd2 40.
Kf1 Rxb2 41.Rc5 a4 42.Rc4 Nd5 43.Nd4 Nb6 44.Rc7 Kf6 45.h4 h6 46.Ra7 Rd2 
47.Ne2 Ra2 48.Nc3 Rxa3 49.Nb5 Ra1+ 50.Ke2 Nc4 51.f4 Rb1 52.Nc3 Rb3 53.Ne4+
Kg7 54.Nc5 Rxg3 55.Nxe6+ Kg8 56.Ra8+ Kh7 57.Rxa4 fxe6 58.Rxc4 Kg7 59.h5 g5
60.fxg5 Rxg5 61.Rh4 Rf5 62.Ke3 Kf6 63.Rh1 Kg5 64.Kd4 Ra5 65.Rh2 Kg4 66.Ke4
Kg3 67.Rh1 Kg2 68.Rb1 Rxh5 69.Rb6 Rh1 70.Kf4 Re1 71.Rb2+ Kh3 72.Rb3+ Kh4 
73.Rb2 Rf1+ 74.Ke4 Kg3 75.Rb3+ Kg4 76.Rb8 Re1+ 77.Kd3 h5 78.Rg8+ Kf4 79.
Rf8+ Ke5 80.Rh8 Rh1 81.Ke3 h4 82.Rh5+ Kd6 83.Kf3 h3 84.Kg3 e5 85.Rh6+ Kd5 
86.Ra6 Rg1+ 87.Kxh3 e4 88.Ra2 Rg8 89.Ra3 Kd4 90.Ra4+ Ke3 91.Ra7 Kf3 92.
Rf7+ Ke2 93.Re7 e3 94.Ra7 Kf2 95.Rf7+ Ke1 96.Ra7 e2 97.Rd7 Rg5 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Petrosian, Tigran"]
[Black "Tolush, Alexander"]
[Result "1-0"]
[ECO "A92"]
[EventDate "1958.01.13"]
[PlyCount "73"]

1.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.d4 d5 6.Nbd2 O-O 7.O-O b6 8.b3 c5 9.
Bb2 Bb7 10.Rc1 Na6 11.Ne5 Qe8 12.e3 Rd8 13.Qe2 Bd6 14.Ndf3 Ne4 15.Nd3 Qh5 
16.Rfe1 Qh6 17.Nfe5 Rc8 18.Red1 Rfd8 19.cxd5 exd5 20.Qf3 Qe6 21.h4 Rf8 22.
Qh5 Rc7 23.dxc5 bxc5 24.Nf4 Qe7 25.Nxd5 Bxd5 26.Rxd5 Nb4 27.Qd1 Bxe5 28.
Rxe5 Qf7 29.Bf1 Kh8 30.Bc4 Qf6 31.Re8 Rxe8 32.Bxf6 gxf6 33.Qh5 Rce7 34.a3 
Na2 35.Rd1 Rb8 36.Qxf5 Nac3 37.Rd7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "16"]
[White "Polugaevsky, Lev"]
[Black "Geller, Efim"]
[Result "1-0"]
[ECO "D71"]
[EventDate "1958.01.13"]
[PlyCount "73"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nxc3 7.bxc3 c5 8.e3 
Nc6 9.Ne2 Bd7 10.O-O Rc8 11.Rb1 b6 12.Qd3 O-O 13.Ba3 Bf5 14.e4 Bg4 15.f3 
Be6 16.d5 Na5 17.c4 Bd7 18.Bb2 Bxb2 19.Rxb2 e5 20.f4 Qe7 21.Qc3 Rce8 22.
Nc1 f5 23.Nd3 exf4 24.e5 fxg3 25.hxg3 Qg5 26.Nf4 Nxc4 27.e6 Nxb2 28.exd7 
Rd8 29.Ne6 Qf6 30.Qxf6 Rxf6 31.Nxd8 Rd6 32.Nb7 Rxd7 33.d6 Nc4 34.Bd5+ Kg7 
35.Bxc4 Rxb7 36.Re1 Rb8 37.d7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Spassky, Boris"]
[Black "Korchnoi, Viktor"]
[Result "1/2-1/2"]
[ECO "C16"]
[EventDate "1958.01.13"]
[PlyCount "56"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.Qg4 Nf5 6.Nf3 Nc6 7.Bb5 Bd7 8.Bg5 h5 
9.Qxf5 exf5 10.Bxd8 Nxd8 11.Bd3 c6 12.h4 g6 13.a3 Be7 14.Ne2 Ne6 15.g3 O-O
16.Kd2 c5 17.Nf4 Nxf4 18.gxf4 c4 19.Be2 b5 20.Rhg1 a5 21.Ke3 b4 22.a4 Rac8
23.Ng5 Kg7 24.Rg3 Bxg5 25.Rxg5 Kh6 26.Bf3 Be6 27.Rag1 Rcd8 28.R5g3 Rc8 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Averbakh, Yury"]
[Black "Suetin, Alexei"]
[Result "1-0"]
[ECO "A34"]
[EventDate "1958.01.13"]
[PlyCount "111"]

1.c4 Nf6 2.Nc3 c5 3.g3 g6 4.Bg2 Bg7 5.a3 Nc6 6.Rb1 e6 7.b4 cxb4 8.axb4 d5 
9.b5 Ne7 10.cxd5 exd5 11.Qa4 O-O 12.Nf3 Nf5 13.O-O d4 14.Nd1 Re8 15.Re1 
Ne4 16.d3 Nc3 17.Nxc3 dxc3 18.Bg5 Qb6 19.e4 Nd4 20.Be3 Nxf3+ 21.Bxf3 Qf6 
22.Bg2 Bg4 23.d4 Bf3 24.e5 Qf5 25.Bxf3 Qxf3 26.Rbc1 Rac8 27.Qb3 h5 28.h4 
Kh7 29.Rxc3 Rxc3 30.Qxc3 f6 31.Bd2 Qf5 32.Bf4 fxe5 33.Bxe5 Rc8 34.Qe3 Bh6 
35.Qa3 Rf8 36.Rf1 Rf7 37.Qa2 Qf3 38.Re1 Kg8 39.Qe2 Qxe2 40.Rxe2 Rd7 41.Rc2
Kf7 42.Rc8 Bd2 43.Kg2 a6 44.bxa6 bxa6 45.Rc6 a5 46.Rf6+ Ke7 47.Rxg6 Bc3 
48.Rh6 a4 49.Ra6 Bxd4 50.Bb8 Rb7 51.Bd6+ Kd7 52.Ba3 Rb3 53.Rxa4 Rd3 54.Bc1
Ke6 55.Ra5 Rd1 56.Be3 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Borisenko, Georgy"]
[Black "Polugaevsky, Lev"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Gipslis, Aivars"]
[Black "Kotov, Alexander"]
[Result "1/2-1/2"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "76"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.Bd3 Bb7 7.O-O Qc7 8.Qe2 
Nc6 9.Nxc6 Qxc6 10.a4 b4 11.Nd5 Nf6 12.c4 bxc3 13.Nxc3 Bb4 14.Bd2 Bxc3 15.
Bxc3 Nxe4 16.Bxe4 Qxe4 17.Qxe4 Bxe4 18.f3 Bc6 19.Bxg7 Rg8 20.Bc3 Rb8 21.
Kf2 Ke7 22.Rfd1 f6 23.Rd4 e5 24.Rh4 Rg7 25.Re1 Ke6 26.g3 d6 27.f4 Rbb7 28.
Re2 Be8 29.g4 Bxa4 30.Rh6 Rb5 31.g5 Rg6 32.Rxh7 fxg5 33.fxe5 dxe5 34.Ra7 
Kf5 35.Ke3 Rbb6 36.Re7 Rbe6 37.Rf2+ Kg4 38.Rh7 Rh6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Tolush, Alexander"]
[Black "Bannik, Anatoly"]
[Result "1/2-1/2"]
[ECO "D53"]
[EventDate "1958.01.13"]
[PlyCount "79"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.e3 O-O 6.cxd5 Nxd5 7.Bxe7 Qxe7 8.Bd3
Nxc3 9.bxc3 c5 10.Nf3 cxd4 11.exd4 b6 12.Qc2 h6 13.Bh7+ Kh8 14.Be4 Bb7 15.
Ne5 Qc7 16.O-O Nd7 17.Bxb7 Qxb7 18.f4 Rac8 19.Rf3 Qd5 20.Qf2 Kg8 21.Re1 
Rfe8 22.h3 b5 23.Kh2 f6 24.Ng4 Qd6 25.Qh4 Kh7 26.Qh5 a6 27.Rg3 Re7 28.Rf1 
Rg8 29.Rff3 f5 30.Ne5 Nxe5 31.dxe5 Qd2 32.Qg6+ Kh8 33.Rg5 Rd8 34.Qh5 Rd3 
35.Rgg3 Rxf3 36.Qxf3 Kh7 37.Qa8 Qxf4 38.Qd8 Rb7 39.Qe8 Qxe5 40.Qg6+ 
1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Bronstein, David"]
[Black "Petrosian, Tigran"]
[Result "1/2-1/2"]
[ECO "B34"]
[EventDate "1958.01.13"]
[PlyCount "51"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Be2 O-O 8.Nb3 
a5 9.a4 Nb4 10.Bf3 d6 11.O-O Be6 12.Nd4 Bd7 13.Nd5 Nfxd5 14.exd5 Rc8 15.c3
Na6 16.Ra3 Nc5 17.b4 Na6 18.Qd2 Qc7 19.Be2 Rfe8 20.Nb5 Qd8 21.Na7 Rb8 22.
Rd1 Qc7 23.h3 Ra8 24.Nb5 Qd8 25.Bg5 Qb8 26.Be3 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Boleslavsky, Isaak"]
[Black "Gurgenidze, Bukhuti"]
[Result "1/2-1/2"]
[ECO "B34"]
[EventDate "1958.01.13"]
[PlyCount "149"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Nxc6 bxc6 8.e5
Ng8 9.f4 Nh6 10.Qd2 O-O 11.h3 f6 12.Bc4+ Nf7 13.Bxf7+ Kxf7 14.O-O-O Kg8 
15.exf6 Rxf6 16.Bd4 Rd6 17.Qe3 Re6 18.Qf3 Bxd4 19.Rxd4 Qb6 20.Re4 Rxe4 21.
Qxe4 Rb8 22.Qxe7 Qxb2+ 23.Kd2 Qb4 24.Qe8+ Qf8 25.Re1 Ba6 26.Qxf8+ Rxf8 27.
g3 Bc4 28.a3 Be6 29.h4 Rf5 30.Re5 Kf7 31.Ne4 Rxe5 32.fxe5 h6 33.Nd6+ Ke7 
34.Nc8+ Kd8 35.Nd6 Ke7 36.Ke3 Ba2 37.Nc8+ Ke6 38.Kf4 a6 39.c3 g5+ 40.hxg5 
hxg5+ 41.Ke4 c5 42.Nb6 Bb1+ 43.Kf3 Bf5 44.g4 Bc2 45.Ke2 Bb3 46.Kd2 Ba2 47.
Ke3 a5 48.Ke2 Bb3 49.Kd2 Bd5 50.Ke3 Bc6 51.Nc4 a4 52.Nb2 Kxe5 53.Nd3+ Kd5 
54.Nb2 d6 55.c4+ Ke6 56.Nd3 Be8 57.Nf2 Bg6 58.Nh3 Kf6 59.Nf2 Bc2 60.Kd2 
Bh7 61.Ke3 Bg6 62.Nh3 Bf7 63.Kd3 Be8 64.Nf2 Bc6 65.Ke3 Bg2 66.Nd3 Ke6 67.
Nb2 Bc6 68.Nd3 Bb7 69.Nb2 Ba6 70.Kf3 Ke5 71.Ke3 d5 72.cxd5 Bb5 73.Nd1 Kxd5
74.Nc3+ Kc4 75.Ne4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Krogius, Nikolai"]
[Black "Tal, Mikhail"]
[Result "1/2-1/2"]
[ECO "B45"]
[EventDate "1958.01.13"]
[PlyCount "101"]

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.Bd3 O-O 10.O-O h6 11.exd5 exd5 12.Bf4 d4 13.Nb5 Nd5 14.Bg3 Be6 
15.Re1 Qd7 16.h3 Rad8 17.Qf3 Nde7 18.Nd6 Bd5 19.Qh5 f5 20.Nc4 f4 21.Bh4 
Bf7 22.Qb5 Bd5 23.Bxe7 Nxe7 24.Qc5 Nf5 25.Re5 b6 26.Bxf5 bxc5 27.Bxd7 Rxd7
28.b3 Rc8 29.Rae1 Bf7 30.Re7 Rxe7 31.Rxe7 Bg6 32.Re2 Re8 33.Rxe8+ Bxe8 34.
Ne5 g5 35.Kf1 Kg7 36.Ke1 Bb5 37.a4 Be8 38.Kd2 Kf6 39.Ng4+ Kg6 40.f3 h5 41.
Ne5+ Kf5 42.Nd3 c4 43.bxc4 Bxa4 44.Nc5 Be8 45.Nb3 Ke5 46.Kd3 Bg6+ 47.Kd2 
Bf5 48.Na5 Bd7 49.Nb3 g4 50.hxg4 hxg4 51.Nc5 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "17"]
[White "Furman, Semen"]
[Black "Taimanov, Mark"]
[Result "1-0"]
[ECO "A46"]
[EventDate "1958.01.13"]
[PlyCount "85"]

1.Nf3 Nf6 2.g3 d6 3.d4 Bg4 4.Bg2 Qc8 5.h3 Bd7 6.Nc3 Nc6 7.e4 e5 8.Bg5 Be7 
9.dxe5 Nxe5 10.Nd4 O-O 11.g4 Nd5 12.Bxe7 Nxe7 13.f4 Nc4 14.Qc1 c5 15.Nde2 
b5 16.b3 Nb6 17.Qd2 b4 18.Nd1 d5 19.Nf2 Ng6 20.O-O Bb5 21.Rfe1 Qc7 22.exd5
Bxe2 23.d6 Rad8 24.Ne4 Qd7 25.Rxe2 f5 26.Nxc5 Qxd6 27.Qxd6 Rxd6 28.Ne6 Rf6
29.gxf5 Rxf5 30.a3 Ra5 31.a4 Nd7 32.Rf1 Nf6 33.f5 Nh4 34.Rf4 Nxg2 35.Rxg2 
Nh5 36.Rxb4 Rxf5 37.Rb8+ Kf7 38.Nxg7 Nxg7 39.Rb7+ Kf6 40.Rbxg7 Rd1+ 41.Kh2
h5 42.R7g6+ Ke5 43.Ra6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Gurgenidze, Bukhuti"]
[Black "Averbakh, Yury"]
[Result "0-1"]
[ECO "C77"]
[EventDate "1958.01.13"]
[PlyCount "122"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Bxc6 dxc6 6.d3 Bd6 7.O-O Nd7 8.Nbd2
c5 9.b3 b5 10.a4 Rb8 11.Re1 O-O 12.Nf1 Re8 13.Ne3 Nf8 14.Bb2 Ng6 15.g3 Bh3
16.axb5 axb5 17.Kh1 f6 18.Nd2 Be6 19.Bc3 Qd7 20.Qf3 Ne7 21.Ra6 Ra8 22.Rea1
Rxa6 23.Rxa6 Qc8 24.Ra2 Qb7 25.Qd1 Ra8 26.Qa1 Rxa2 27.Qxa2 Nc6 28.Kg1 Nd4 
29.Bb2 Bf7 30.c3 Nc6 31.Qb1 Qa7 32.c4 Qa5 33.cxb5 Qxb5 34.Nec4 Bf8 35.f4 
exf4 36.gxf4 Nb4 37.Bc3 Qd7 38.Bxb4 Qg4+ 39.Kh1 cxb4 40.Qf1 Bc5 41.Qa1 
Qxf4 42.Qa8+ Bf8 43.Qd8 Qf2 44.Qd7 Qe1+ 45.Kg2 Qe2+ 46.Kh1 Qe1+ 47.Kg2 
Qe2+ 48.Kh1 h6 49.Qd8 Be6 50.Qxc7 Qxd3 51.Qc6 Bf7 52.Qc8 h5 53.Qf5 Qe2 54.
Qd7 h4 55.h3 Qe1+ 56.Kg2 Qe2+ 57.Kh1 Qf2 58.Qc8 g6 59.Qg4 Bc5 60.Qg2 Qe1+ 
61.Kh2 Bf2 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Taimanov, Mark"]
[Black "Krogius, Nikolai"]
[Result "0-1"]
[ECO "A42"]
[EventDate "1958.01.13"]
[PlyCount "80"]

1.c4 g6 2.Nc3 Bg7 3.d4 d6 4.e4 e5 5.Nf3 Bg4 6.d5 Bxf3 7.Qxf3 Nd7 8.h4 h5 
9.Bg5 Bf6 10.Qe3 Be7 11.Qd2 Ngf6 12.g3 c5 13.Be2 a6 14.f3 Qc7 15.a3 Ng8 
16.b4 Bxg5 17.hxg5 Ne7 18.Rb1 Kf8 19.f4 Kg7 20.bxc5 Qxc5 21.Rxb7 Rad8 22.
fxe5 dxe5 23.Rb4 Nc8 24.Na4 Qa7 25.Qc3 Nd6 26.c5 a5 27.Rb5 Nxb5 28.Bxb5 
Rb8 29.Bxd7 Rb1+ 30.Kf2 Rxh1 31.Qxe5+ Kh7 32.Qe7 Rg8 33.Kg2 Rc1 34.Nb6 Qa6
35.Qxf7+ Rg7 36.Qf3 Rxc5 37.Bf5 Qxb6 38.Qxh5+ Kg8 39.Qh6 Rc2+ 40.Kf3 Rf2+ 
0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Tal, Mikhail"]
[Black "Gipslis, Aivars"]
[Result "1-0"]
[ECO "B43"]
[EventDate "1958.01.13"]
[PlyCount "51"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.Bd3 Bb7 7.O-O Qc7 8.Re1 
Nc6 9.Nxc6 Qxc6 10.a4 b4 11.Nd5 Nf6 12.Bd2 Nxd5 13.exd5 Qc5 14.Be4 f5 15.
Bf3 Bxd5 16.Bxb4 Bxf3 17.Qxf3 Qc8 18.Bc3 Kf7 19.Rad1 Be7 20.g4 Rf8 21.gxf5
Kg8 22.Qg2 Bf6 23.Bxf6 Rxf6 24.Rxd7 Qxd7 25.Qxa8+ Rf8 26.Qxa6 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Korchnoi, Viktor"]
[Black "Tolush, Alexander"]
[Result "0-1"]
[ECO "B97"]
[EventDate "1958.01.13"]
[PlyCount "78"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 
Qxb2 9.Rb1 Qa3 10.e5 dxe5 11.fxe5 Nfd7 12.Ne4 h6 13.Bh4 Qxa2 14.Rb3 Qa1+ 
15.Kf2 Qa4 16.Bb5 axb5 17.Nxb5 Bc5+ 18.Nxc5 Qxh4+ 19.g3 Qd8 20.Qd6 Nxc5 
21.Nc7+ Qxc7 22.Qxc7 Nba6 23.Qb6 Nxb3 24.cxb3 O-O 25.Ra1 Nc7 26.Rxa8 Nxa8 
27.Qd6 b6 28.Qc6 Ba6 29.Qd7 Rc8 30.Qa7 Bb5 31.Qb7 Rc2+ 32.Ke1 Nc7 33.Qxb6 
Re2+ 34.Kd1 Nd5 35.Qd4 Rxh2 36.Kc1 Rg2 37.g4 g5 38.Kb1 Kg7 39.b4 Be2 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Kotov, Alexander"]
[Black "Spassky, Boris"]
[Result "1-0"]
[ECO "E87"]
[EventDate "1958.01.13"]
[PlyCount "67"]

1.c4 Nf6 2.Nc3 g6 3.d4 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c5 8.g4 Ne8 9.h4
a6 10.Bd3 b5 11.Qd2 bxc4 12.Bxc4 Nd7 13.h5 Nb6 14.Bd3 a5 15.hxg6 fxg6 16.
Qh2 Nf6 17.Nh3 Qe7 18.Ne2 Rb8 19.Ng3 c4 20.Bc2 Nbxd5 21.exd5 Rxb2 22.Ng5 
h6 23.N5e4 Nxd5 24.Bxh6 Nb4 25.Bg5 Qc7 26.Qh7+ Kf7 27.Rh6 Nxc2+ 28.Kf1 Nd4
29.Qxg6+ Kg8 30.Qh7+ Kf7 31.Nxd6+ Qxd6 32.Rxd6 Ne6 33.Nf5 Rh8 34.Nh6+ 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Bannik, Anatoly"]
[Black "Bronstein, David"]
[Result "0-1"]
[ECO "B90"]
[EventDate "1958.01.13"]
[PlyCount "126"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 g6 7.f3 Nbd7 8.Be3 
Nb6 9.Bb3 Bd7 10.Nd5 Nbxd5 11.exd5 Nxd5 12.Bf2 Qa5+ 13.c3 Bh6 14.Nc2 Bc6 
15.O-O O-O 16.Re1 Rfe8 17.Nd4 Nf6 18.Nxc6 bxc6 19.Qd4 Qc7 20.Rad1 Bg7 21.
Kh1 a5 22.Re2 Nh5 23.Qc4 e6 24.Ba4 Rec8 25.g3 d5 26.Qc5 Nf6 27.Qe3 Rab8 
28.g4 Rb7 29.Kg2 Nd7 30.Rde1 e5 31.Bg3 Qb6 32.Qc1 Qa6 33.h4 Rcb8 34.h5 Nc5
35.Bc2 Nd7 36.b3 Re8 37.Qd2 Qa8 38.hxg6 fxg6 39.Bh4 Nf8 40.Bg3 Rbe7 41.c4 
Bf6 42.cxd5 cxd5 43.b4 a4 44.Qd1 e4 45.fxe4 dxe4 46.Bxa4 e3+ 47.Kh2 Rd8 
48.Qb3+ Kg7 49.Rf1 Nd7 50.Rxe3 Ne5 51.Kh3 Rd2 52.Bf2 Rxf2 53.Rxf2 Qh1+ 54.
Rh2 Qf1+ 55.Rg2 Qh1+ 56.Rh2 Qf1+ 57.Rg2 Nf7 58.Rxe7 Bxe7 59.Qd1 Qf4 60.Rg1
Qf2 61.g5 Bd6 62.Rg2 Nxg5+ 63.Rxg5 Qh2+ 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Petrosian, Tigran"]
[Black "Boleslavsky, Isaak"]
[Result "1/2-1/2"]
[ECO "A05"]
[EventDate "1958.01.13"]
[PlyCount "50"]

1.Nf3 Nf6 2.g3 g6 3.b3 b6 4.Bg2 Bb7 5.c4 Bg7 6.Bb2 O-O 7.O-O d6 8.d4 Nbd7 
9.Qc2 c5 10.Nc3 a6 11.Rad1 b5 12.d5 Nb6 13.Nd2 Nfd7 14.Rc1 Rb8 15.h3 bxc4 
16.bxc4 Qc7 17.Nd1 Bxb2 18.Nxb2 e6 19.dxe6 fxe6 20.Bxb7 Qxb7 21.Nd3 Rbe8 
22.Nf4 Ne5 23.Nd3 Ned7 24.Nf4 Ne5 25.Nd3 Ned7 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Geller, Efim"]
[Black "Borisenko, Georgy"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1958.01.13"]
[PlyCount "0"]

1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "18"]
[White "Polugaevsky, Lev"]
[Black "Furman, Semen"]
[Result "1-0"]
[ECO "E14"]
[EventDate "1958.01.13"]
[PlyCount "83"]

1.c4 e6 2.d4 Nf6 3.Nf3 b6 4.e3 Bb7 5.Bd3 Be7 6.O-O O-O 7.Nc3 d5 8.b3 Ne4 
9.Bb2 Nd7 10.Qc2 Ndf6 11.Rad1 Nxc3 12.Bxc3 Rc8 13.Bb2 Qd6 14.c5 bxc5 15.
Ba3 Qd8 16.Bxc5 Bxc5 17.Qxc5 Qd6 18.Rc1 Qb6 19.Ne5 Rfd8 20.Qe7 Rf8 21.Qa3 
Rfd8 22.Rc5 c6 23.Ra5 Ra8 24.Ba6 Rdc8 25.Rc1 Rc7 26.Bxb7 Qxb7 27.Rac5 Ne4 
28.Rxc6 Rxc6 29.Nxc6 h6 30.Qe7 Qa6 31.Ne5 Rf8 32.Rc2 Qa5 33.Nf3 Qa6 34.Qc7
Qa3 35.h3 a5 36.Qd7 Qb4 37.Kh2 a4 38.bxa4 Qb1 39.Qc6 Rb8 40.Qc7 Rb2 41.
Qd8+ Kh7 42.Rc8 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Suetin, Alexei"]
[Black "Gurgenidze, Bukhuti"]
[Result "1-0"]
[ECO "B94"]
[EventDate "1958.01.13"]
[PlyCount "67"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Be2 h6 8.Be3 
Qc7 9.O-O e5 10.Nb3 b5 11.a4 b4 12.Na2 Nxe4 13.Nxb4 Ndf6 14.f3 Nc5 15.Nxc5
dxc5 16.Nd5 Nxd5 17.Qxd5 Bb7 18.Qc4 Be7 19.b4 O-O 20.b5 Kh8 21.Rad1 axb5 
22.axb5 Rae8 23.Qb3 Qb6 24.Bc4 Bg5 25.Rd7 Bxe3+ 26.Qxe3 f5 27.Rfd1 f4 28.
Qd2 Bc8 29.Rd6 Qc7 30.b6 Qb7 31.Bb5 Re6 32.Rxe6 Bxe6 33.Qd6 Rf6 34.Qc7 1-0

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Gipslis, Aivars"]
[Black "Taimanov, Mark"]
[Result "0-1"]
[ECO "C70"]
[EventDate "1958.01.13"]
[PlyCount "54"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5 6.d4 Nxb3 7.axb3 exd4 8.Qxd4
Ne7 9.O-O Nc6 10.Qd5 Bb7 11.Rd1 Be7 12.c4 O-O 13.Nc3 Na5 14.Qxd7 Nxb3 15.
Rb1 Qxd7 16.Rxd7 Bd6 17.e5 Bc8 18.exd6 Bxd7 19.Bf4 cxd6 20.Bxd6 Rfd8 21.c5
Be6 22.Ng5 Bc4 23.g4 h6 24.Nge4 b4 25.Na4 Bd3 26.Re1 Re8 27.f3 Nd2 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Bronstein, David"]
[Black "Korchnoi, Viktor"]
[Result "1/2-1/2"]
[ECO "C08"]
[EventDate "1958.01.13"]
[PlyCount "49"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Bb5+ Bd7 6.Bxd7+ Nxd7 7.Qf3 Ngf6 8.
Ne2 Bd6 9.dxc5 Nxc5 10.Nb3 Ne6 11.Be3 Be5 12.c3 Qc7 13.Rd1 O-O 14.g3 Qc4 
15.O-O a5 16.Nbc1 Qe4 17.Qg2 Rfe8 18.h3 a4 19.a3 Rad8 20.Rfe1 Qc4 21.Nd3 
Bc7 22.Rf1 Ne4 23.Rfe1 Nf6 24.Rf1 Ne4 25.Rfe1 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Spassky, Boris"]
[Black "Tal, Mikhail"]
[Result "0-1"]
[ECO "E26"]
[EventDate "1958.01.13"]
[PlyCount "146"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 Nc6 7.Bd3 e5 8.Ne2 e4
9.Bb1 b6 10.Ng3 Ba6 11.f3 Bxc4 12.Nf5 O-O 13.Nd6 Bd3 14.Bxd3 exd3 15.Qxd3 
cxd4 16.cxd4 Ne8 17.Nf5 d5 18.a4 Nd6 19.Nxd6 Qxd6 20.Ba3 Nb4 21.Qb3 a5 22.
O-O Rfc8 23.Rac1 Qe6 24.Bxb4 axb4 25.Kf2 Qd6 26.h3 Kf8 27.Rc2 Rxc2+ 28.
Qxc2 g6 29.Rc1 Qd7 30.Qc6 Qxc6 31.Rxc6 Ra6 32.a5 b3 33.axb6 b2 34.b7 b1=Q 
35.Rc8+ Kg7 36.b8=Q Ra2+ 37.Kg3 Qe1+ 38.Kh2 Qxe3 39.Rg8+ Kf6 40.Qd6+ Qe6 
41.Qf4+ Qf5 42.Qd6+ Qe6 43.Qg3 Qe3 44.h4 Re2 45.Qd6+ Qe6 46.Qf4+ Qf5 47.
Qh6 Ke7 48.Qf8+ Kf6 49.Qg7+ Ke7 50.Ra8 Qd7 51.Qf8+ Kf6 52.Ra6+ Re6 53.Qh8+
Ke7 54.Ra8 Re1 55.Kg3 h5 56.Kf2 Re6 57.Rc8 Rd6 58.Qf8+ Kf6 59.Re8 Re6 60.
Qh8+ Kf5 61.Qh6 Kf6 62.Qh8+ Kf5 63.Rd8 Qc6 64.Rc8 Qa6 65.Kg3 Qd6+ 66.Kh3 
Re1 67.g3 Rg1 68.f4 Re1 69.Rc2 Qe6 70.Rf2 Rh1+ 71.Kg2 Qe4+ 72.Rf3 Kg4 73.
Qc8+ f5 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Boleslavsky, Isaak"]
[Black "Bannik, Anatoly"]
[Result "1/2-1/2"]
[ECO "C67"]
[EventDate "1958.01.13"]
[PlyCount "38"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.Re1 Nd6 6.Nxe5 Be7 7.Bd3 O-O 8.
Nc3 Nxe5 9.Rxe5 Ne8 10.b3 d6 11.Re1 Nf6 12.Qf3 d5 13.Bb2 c6 14.h3 Re8 15.
Ne2 Nd7 16.Ng3 Bf6 17.Bxf6 Nxf6 18.Nh5 Nxh5 19.Qxh5 h6 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Tolush, Alexander"]
[Black "Kotov, Alexander"]
[Result "0-1"]
[ECO "B06"]
[EventDate "1958.01.13"]
[PlyCount "68"]

1.e4 d6 2.d4 g6 3.h4 Nf6 4.Bd3 Nc6 5.c3 e5 6.d5 Nb8 7.Ne2 Nh5 8.Nd2 Be7 9.
Nf3 Nd7 10.g4 Nhf6 11.g5 Nh5 12.Be3 c6 13.Ng3 Nf4 14.Bxf4 exf4 15.Ne2 h6 
16.gxh6 Rxh6 17.Nxf4 g5 18.Ng2 g4 19.Nd4 Ne5 20.h5 c5 21.Bb5+ Kf8 22.f4 
cxd4 23.fxe5 dxe5 24.Be2 dxc3 25.bxc3 Bg5 26.Bxg4 Qa5 27.Rh3 Qc5 28.Rg3 
Qg1+ 29.Ke2 Qh2 30.Kf3 Rf6+ 31.Bf5 Bxf5 32.exf5 Rxf5+ 33.Kg4 Rf2 34.Qd3 
Rxg2 0-1

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Averbakh, Yury"]
[Black "Petrosian, Tigran"]
[Result "1/2-1/2"]
[ECO "B92"]
[EventDate "1958.01.13"]
[PlyCount "43"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.Be3 
O-O 9.O-O Be6 10.f3 Nbd7 11.a4 Qc7 12.Rf2 Rad8 13.a5 Qc6 14.Bf1 d5 15.exd5
Bxd5 16.Nxd5 Nxd5 17.Qe1 Nxe3 18.Qxe3 Nc5 19.Re2 Rd3 20.Qxe5 Nxb3 21.cxb3 
Bf6 22.Qe4 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Furman, Semen"]
[Black "Geller, Efim"]
[Result "1/2-1/2"]
[ECO "E54"]
[EventDate "1958.01.13"]
[PlyCount "103"]

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.Qe2 Bb7 10.dxc5 Bxc3 11.bxc3 bxc5 12.Bd3 Nbd7 13.e4 c4 14.Bc2 Qa5 15.Rb1
Nc5 16.Rxb7 Nxb7 17.e5 Nd5 18.Bxh7+ Kxh7 19.Ng5+ Kg8 20.Qh5 Nf6 21.exf6 
Qf5 22.g4 Qg6 23.Qxg6 fxg6 24.f7+ Rxf7 25.Nxf7 Kxf7 26.Be3 e5 27.f4 Ke6 
28.fxe5 Nd8 29.Rf8 Rb8 30.Bxa7 Rb1+ 31.Rf1 Rb2 32.Rf2 Rb1+ 33.Rf1 Rb2 34.
Rf2 Rb1+ 35.Kg2 Nc6 36.Be3 Nxe5 37.h3 Re1 38.Bd2 Ra1 39.Bg5 Nd3 40.Re2+ 
Kd5 41.Kg3 Rg1+ 42.Kh2 Ra1 43.Kg2 Nc1 44.Rd2+ Nd3 45.Re2 Nc1 46.Rd2+ Nd3 
47.Kg3 Re1 48.Kh2 Ke4 49.Kg2 Kd5 50.Bd8 Rc1 51.Bg5 Ke5 52.Kf3 1/2-1/2

[Event "25th URS-ch"]
[Site "Riga URS"]
[Date "1958.??.??"]
[Round "19"]
[White "Krogius, Nikolai"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]
[ECO "B09"]
[EventDate "1958.01.13"]
[PlyCount "37"]

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.f4 Nf6 5.Nf3 c5 6.Bb5+ Bd7 7.e5 Ng4 8.e6 Bxb5 
9.exf7+ Kd7 10.Nxb5 Qa5+ 11.Nc3 cxd4 12.Nxd4 Qh5 13.Qf3 Nc6 14.Nde2 Nh6 
15.Qxh5 gxh5 16.Be3 Raf8 17.O-O-O Nf5 18.Bf2 Rxf7 19.g3 1/2-1/2

