The Freezone - Episode I

[Dan Astrachan]

Just for the fun of it, a tournament between 8 of the stongest free chess engines...

Participants (with current CCRL 40/40 rating)

Stockfish 180416 (3340)
Fire 4 (3207)
Gull 3 (3200)
Critter 1.6 (3171)
Nirvana Chess 2.2 (3157)
Protector 1.9.0 (3153)
Andscacs 0.86 (3150)
BlackMamba 2.0 (3137)

Technical details

Machine: Intel(R) Core(TM) i7 CPU K 875 @ 2.93GHz
Number of games: 56
Time control : 40/40 repeated
Openings: 2-move openings randomly chosen from 67 neutral positions taken from the Perfect 2015 book
GUI: ChessGUI
Hash: 512 Mb
Tablebases: Nalimov, 5 pieces
Adjudication:
Draw => 3-fold repetition, 50-move rule, TB draw, evals comprised between -0.10 and +0.10 for 8 consecutive moves beyond 60 moves played
Win => evals beyond +8 for 8 consecutive moves, TB mates shorter than 50 moves

[Dan Astrachan]

First pairing: BlackMamba vs Stockfish

SF off to a good start with two wins against BlackMamba:

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.19"]
[Round "1.1"]
[White "BlackMamba 2.0 x64"]
[Black "Stockfish 180416 64 POPCNT"]
[Result "0-1"]
[WhiteElo "3137"]
[BlackElo "3340"]
[ECO "D02d"]
[Time "22:33:48"]
[Opening "D02d [Queen's Pawn: 2.Nf3 Bf5 3.e3 c6]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "151"]
[Number "1"]
[Termination "GUI TB Mate in 35"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

1.d4 d5 2.Nf3 c6 3.e3 Bf5 4.Bd3 e6 5.O-O Nf6 6.c4 Bxd3 7.Qxd3 a5 8.Nbd2 Be7 9.e4 a4 10.e5 dxc4 11.Nxc4 Nd5 12.Qe4 b5 13.Ne3 O-O 14.Qg4 Kh8 15.Bd2 Nxe3 16.fxe3 Nd7 17.Qe4 c5 18.Qc6 Rb8 19.Rac1 Qc8 20.Qe4 Qb7 21.Qxb7 Rxb7 22.dxc5 Nxc5 23.Bc3 Rd8 24.Bd4 Nd3 25.Rcd1 Nb4 26.Bc5 Rc8 27.Bxb4 Bxb4 28.Ng5 Kg8 29.Ne4 Rbc7 30.Nd6 Rb8 31.Ne4 h6 32.h3 Rc2 33.a3 Bc5 34.Rd3 Bb6 35.Rf2 Rc4 36.Rf4 Kf8 37.h4 Ke7 38.Kf1 Bc7 39.Nd6 Rxf4+ 40.exf4 Rd8 41.Ke2 Bxd6 42.exd6+ Rxd6 43.Rc3 Kd7 44.Rc5 Rd5 45.Rc3 Kd6 46.b3 axb3 47.Rxb3 Kc6 48.Rg3 g6 49.Rb3 Rd4 50.g3 Ra4 51.Rd3 h5 52.Ke3 Kc5 53.Rb3 Kb6 54.Rd3 Kc6 55.Kf3 Kc7 56.Rc3+ Kb6 57.Re3 Ka5 58.Ke2 Rd4 59.Re5 Ka4 60.Re3 f5 61.Rf3 Re4+ 62.Kd2 e5 63.fxe5 Rxe5 64.Rc3 Re4 65.Rf3 Rg4 66.Kc2 f4 67.gxf4 Rxh4 68.f5 gxf5 69.Rxf5 Rh3 70.Re5 h4 71.Rh5 Rh2+ 72.Kc3 Rg2 73.Rh8 Rg3+ 74.Kb2 Rb3+ 75.Kc1 Kxa3 76.Rxh4 0-1
[/pgn]

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "1.2"]
[White "Stockfish 180416 64 POPCNT"]
[Black "BlackMamba 2.0 x64"]
[Result "1-0"]
[WhiteElo "3340"]
[BlackElo "3137"]
[ECO "D02c"]
[Time "01:08:01"]
[Opening "D02c [Queen's Pawn: London]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "166"]
[Number "2"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.d4 d5 2.Nf3 c6 3.Bf4 Nf6 4.e3 Qb6 5.Qc1 Bf5 6.c4 Nbd7 7.Nc3 e6 8.c5 Qd8 9.Be2 Nh5 10.Be5 Nhf6 11.Bg3 Nh5 12.Bh4 Be7 13.Bxe7 Qxe7 14.O-O O-O 15.b4 Nhf6 16.a3 h6 17.Re1 b6 18.b5 cxb5 19.c6 Nb8 20.c7 Qxc7 21.Nxb5 Qxc1 22.Raxc1 a6 23.Nd6 b5 24.Ne5 Ra7 25.h4 Ne4 26.Nxf5 exf5 27.Bd3 g6 28.h5 Kg7 29.hxg6 fxg6 30.Re2 Nd7 31.Rec2 Nxe5 32.dxe5 Rff7 33.f3 Ng5 34.Rc6 Rfe7 35.Rb6 Rxe5 36.Rcc6 Rxe3 37.Rxg6+ Kf8 38.Bxf5 Nf7 39.Kf2 d4 40.Rgc6 h5 41.Rc8+ Re8 42.Rxe8+ Kxe8 43.Ke2 Re7+ 44.Kd3 Re3+ 45.Kxd4 Rxa3 46.Bg6 Kf8 47.Bxh5 Ra4+ 48.Kd5 Nd8 49.Bg6 Ke7 50.Be4 Nf7 51.Re6+ Kf8 52.f4 Ra2 53.Rb6 a5 54.Bf3 b4 55.Ke6 Rd2 56.Bd5 Nh6 57.Rb8+ Kg7 58.Rb7+ Kh8 59.Bf3 Rd8 60.Kf6 Rd6+ 61.Kg5 Ng8 62.f5 Nf6 63.g4 Ra6 64.Be2 Rc6 65.Bd3 Rd6 66.Bc2 Nh7+ 67.Kf4 Rd2 68.Be4 Rf2+ 69.Bf3 Rc2 70.Rb6 Rf2 71.Rb5 Kg7 72.Rxa5 b3 73.Ra7+ Kh6 74.Rc7 Rc2 75.Rb7 Rc4+ 76.Be4 Rc1 77.Rxb3 Rf1+ 78.Bf3 Rf2 79.Rb6+ Kg7 80.g5 Nxg5 81.Rg6+ Kf7 82.Rxg5 Rf1 83.Rg6 Ke7 1-0 [/pgn]

[Dan Astrachan]

Second pairing: Andscacs vs Fire

Two draws in the Sicilian.

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "1.3"]
[White "Andscacs 0.86"]
[Black "Fire 4 x64"]
[Result "1/2-1/2"]
[WhiteElo "3150"]
[BlackElo "3207"]
[ECO "B45h"]
[Time "04:07:56"]
[Opening "B45h [Sicilian: Taimanov, Four Knights, 6.Be2]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "122"]
[Number "3"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.e4 c5 2.Nf3 e6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 Nf6 6.Be2 Bb4 7.O-O Bxc3 8.Nxc6 dxc6 9.Qxd8+ Kxd8 10.bxc3 Nxe4 11.Bf3 Nf6 12.Re1 Re8 13.Bf4 Ke7 14.a4 a5 15.Be5 g6 16.Red1 Nd7 17.Bf4 e5 18.Be3 Nf8 19.Be2 Ne6 20.Bc4 Nc7 21.Bb6 Be6 22.Bxc7 Bxc4 23.Bxe5 Rad8 24.Rdb1 Ba6 25.Bc7 Rd2 26.h3 Kd7 27.Bxa5 Ree2 28.Bb6 Rxc2 29.Rd1+ Red2 30.Rxd2+ Rxd2 31.Re1 Rc2 32.Bd4 Ra2 33.Bc5 Be2 34.Rb1 b5 35.axb5 cxb5 36.Kh2 Kc6 37.Be3 Kd5 38.Kg3 Bd3 39.Rb4 Bc4 40.Rb1 Ke4 41.Rd1 Rc2 42.Bd4 Be2 43.f3+ Kd5 44.Ra1 Kc4 45.Bf6 Bd3 46.Ra7 Bf1 47.Rc7+ Kb3 48.Rxf7 h5 49.h4 Rxg2+ 50.Kf4 Bd3 51.Bd4 Rh2 52.Bf6 Bc4 53.Rg7 Rg2 54.Bd4 Kc2 55.Rb7 Rh2 56.Kg5 Bd3 57.Ra7 Rh1 58.Ra8 Rf1 59.Rf8 Kb3 60.Kf4 Bf5 61.Rf7 Kc4 1/2-1/2[/pgn]

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "1.4"]
[White "Fire 4 x64"]
[Black "Andscacs 0.86"]
[Result "1/2-1/2"]
[WhiteElo "3207"]
[BlackElo "3150"]
[ECO "B40a"]
[Time "06:08:28"]
[Opening "B40a [Sicilian: 2...e6]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "198"]
[Number "4"]
[Termination "GUI TB adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.e4 c5 2.Nf3 e6 3.Be2 Nc6 4.d4 d5 5.exd5 exd5 6.O-O Nf6 7.Nc3 Be6 8.Bg5 h6 9.Bxf6 Qxf6 10.dxc5 O-O-O 11.Na4 g5 12.b4 g4 13.Nd2 Nxb4 14.Nb3 Nc6 15.Bxg4 Rg8 16.Bxe6+ fxe6 17.g3 Qh4 18.Nb2 e5 19.Nd3 Rd7 20.c3 e4 21.Kh1 Qf6 22.Nb4 Ne5 23.f4 exf3 24.Nd3 Rf7 25.Nxe5 Qxe5 26.Rxf3 Rxf3 27.Qxf3 Be7 28.Rf1 Rf8 29.Qg4+ Kc7 30.Rxf8 Bxf8 31.Kg2 Be7 32.Qf3 Kc6 33.c4 b6 34.cxd5+ Qxd5 35.cxb6 axb6 36.h4 Bb4 37.Nd4+ Kc5 38.Nc2 Bd2 39.a4 Qxf3+ 40.Kxf3 Kc4 41.Ne3+ Kb4 42.Nd5+ Kc5 43.Nf4 Kd4 44.g4 Ke5 45.Ng6+ Kf6 46.Ke2 Bc1 47.h5 Ba3 48.Kf3 Bd6 49.Nf4 Ke5 50.Nd3+ Kf6 51.Nb2 Kg5 52.Nc4 Bc7 53.Ne3 Bb8 54.Nd5 Ba7 55.Nf4 Bb8 56.Ne2 Ba7 57.Ng3 Bb8 58.Ne4+ Kh4 59.Nd2 Kg5 60.Nb1 Be5 61.Na3 Bd6 62.Nb5 Bh2 63.Nd4 Bd6 64.Ne2 Be5 65.Nc1 Bf4 66.Nd3 Bd6 67.Ne1 Bb4 68.Nc2 Bc5 69.Na1 Bd6 70.Nb3 Bc7 71.Nd4 Bd6 72.Nf5 Bc7 73.Ne7 Bh2 74.Nd5 Bg1 75.Nc7 Bh2 76.Ne6+ Kf6 77.Nd8 Ke7 78.Nc6+ Kf6 79.Ke3 Kg5 80.Kf3 Kf6 81.Nd4 Kg5 82.Kg2 Bb8 83.Nc6 Bf4 84.Kf3 Bc7 85.Nb4 Bb8 86.Nc2 Bd6 87.Na1 Be5 88.Nb3 Bc7 89.Nd2 Bb8 90.Ke4 Kxg4 91.Nc4 Kxh5 92.Nxb6 Kg5 93.Nd5 h5 94.Kf3 h4 95.Kg2 Kg4 96.Ne3+ Kf4 97.Nc2 Bc7 98.Kh3 Bd8 99.a5 Bxa5 1/2-1/2[/pgn]

[Dan Astrachan]

Third pairing: Protector vs Gull

Barely an hour of play before a threefold was reached in the first game, a Neo-Grünfeld:

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "1.5"]
[White "Protector 1.9.0"]
[Black "Gull 3 x64"]
[Result "1/2-1/2"]
[WhiteElo "3153"]
[BlackElo "3200"]
[ECO "A07"]
[Time "09:44:43"]
[Opening "D78j [Neo-Grünfeld, 6.O-O c6 7.Qb3 dxc4]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "68"]
[Number "5"]
[Termination "3-fold rep"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.Nf3 d5 2.g3 g6 3.d4 Nf6 4.Bg2 Bg7 5.c4 c6 6.O-O O-O 7.Qb3 dxc4 8.Qxc4 Bf5 9.Nc3 Nbd7 10.Qb3 Qb6 11.Re1 Qxb3 12.axb3 Be6 13.b4 a6 14.e4 Nb6 15.Be3 Nc4 16.Bc1 Nb6 17.Rb1 Rfd8 18.b3 h6 19.h4 Nc8 20.Na4 Nd7 21.Ne5 Nxe5 22.dxe5 Bxe5 23.Bxh6 Nd6 24.Be3 Nb5 25.Nc5 Bc8 26.Rbd1 Rd6 27.f4 Bc3 28.e5 Rxd1 29.Rxd1 Bg4 30.Rd3 Rb8 31.Bd2 Bd4+ 32.Be3 Bc3 33.Bd2 Bd4+ 34.Be3 Bc3 1/2-1/2 [/pgn]

In the second game, SF thinks that Protector blundered its advantage away with 47...Rb7

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "1.6"]
[White "Gull 3 x64"]
[Black "Protector 1.9.0"]
[Result "1/2-1/2"]
[WhiteElo "3200"]
[BlackElo "3153"]
[ECO "D78n"]
[Time "10:48:05"]
[Opening "D78n [Neo-Grünfeld, 6.O-O c6 7.Nbd2 Bf5]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "122"]
[Number "6"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.Nf3 d5 2.g3 g6 3.d4 Bg7 4.Bg2 Nf6 5.O-O O-O 6.c4 c6 7.Nbd2 Bf5 8.b3 Nbd7 9.a4 Qb6 10.Bb2 a5 11.Rc1 Ne4 12.Nxe4 Bxe4 13.Bh3 Bxf3 14.Bxd7 Be4 15.c5 Qd8 16.Bh3 g5 17.Qd2 e6 18.e3 Re8 19.Bg2 Bg6 20.Rfe1 e5 21.Rcd1 exd4 22.exd4 Rxe1+ 23.Rxe1 b6 24.Ba3 Bf8 25.Qc1 Rb8 26.Re3 b5 27.axb5 Rxb5 28.Qe1 Rb8 29.Bf3 h5 30.Bb2 g4 31.Bd1 Be4 32.Qc3 Bg7 33.Bc2 f5 34.Re2 Rb5 35.Re1 Qf6 36.Bd3 Rb8 37.Bc2 h4 38.gxh4 Qxh4 39.Bxe4 fxe4 40.Bc1 Rb5 41.Be3 Qf6 42.Qa1 Qf8 43.Rf1 Kh7 44.Rb1 Bf6 45.b4 Qb8 46.Kh1 axb4 47.Rb3 Rb7 48.Qa4 Qc7 49.Rxb4 Rxb4 50.Qxb4 Kg6 51.Qb6 Bd8 52.Qa6 Kf6 53.Qa8 Kf5 54.Kg2 Kg6 55.Kg1 Qd7 56.Bf4 Kg7 57.Qb8 Kf7 58.Qe5 Qe6 59.Qh8 Qf6 60.Qh7+ Qg7 61.Qf5+ Qf6 1/2-1/2 [/pgn]

[Dan Astrachan]

Fourth pairing: Nirvanachess vs Critter

Equality was reached very quickly in the first game, with a logical draw as a result.

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "1.7"]
[White "Nirvanachess 2.2"]
[Black "Critter 1.6a 64-bit"]
[Result "1/2-1/2"]
[WhiteElo "3157"]
[BlackElo "3171"]
[ECO "D59"]
[Time "12:54:54"]
[Opening "D59h [QGD: Tartakower, 8.cxd5 Nxd5 9.Bxe7 Qxe7 10.Rc1 Bb7 11.Be2]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "122"]
[Number "7"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.Nf3 O-O 6.e3 h6 7.Bh4 b6 8.cxd5 Nxd5 9.Bxe7 Qxe7 10.Rc1 Bb7 11.Be2 Rd8 12.Qa4 Nxc3 13.Rxc3 Qd6 14.O-O Nd7 15.b4 c6 16.Qa3 a5 17.bxa5 c5 18.a6 Ra7 19.Rd1 Qc7 20.dxc5 Nxc5 21.Rxd8+ Qxd8 22.Rc2 Bxa6 23.Rd2 Qf6 24.h3 e5 25.Bxa6 e4 26.Nd4 Rxa6 27.Qb4 Ra5 28.Nb3 Nxb3 29.Qxb3 Rc5 30.Rd4 Rc1+ 31.Rd1 Rxd1+ 32.Qxd1 b5 33.Qd5 Qa1+ 34.Kh2 Qb2 35.Kg3 Qb4 36.Qa8+ Kh7 37.Qd8 Qc5 38.Qd4 Qc7+ 39.f4 exf3+ 40.Kxf3 g6 41.Qd5 b4 42.g4 Kg8 43.Kg2 Qb6 44.Qe5 Qc6+ 45.Kg3 Qc3 46.Qe4 Qe1+ 47.Kg2 Qd1 48.Qe8+ Kg7 49.Qe5+ Kh7 50.Qf4 Qd5+ 51.Kg3 Qe6 52.h4 Kg8 53.h5 g5 54.Qd4 Qe8 55.Qc5 Kh7 56.Kf2 Qb8 57.Qc4 Kg8 58.Qd4 Qb5 59.Qd8+ Kg7 60.Qd4+ Kg8 61.Qe4 Qb6 1/2-1/2 [/pgn]

In the second game, Critter tried for a very long time to prevail in a RP vs NPP ending, to no avail.

[pgn] [Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "1.8"]
[White "Critter 1.6a 64-bit"]
[Black "Nirvanachess 2.2"]
[Result "1/2-1/2"]
[WhiteElo "3171"]
[BlackElo "3157"]
[ECO "E58"]
[Time "14:47:00"]
[Opening "E58 [Nimzo-Indian: Main Line, 9.bxc3 Qc7 10.h3]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "283"]
[Number "8"]
[Termination "GUI adjudication"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

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.h3 Na5 11.cxd5 exd5 12.a4 b6 13.Nd2 Re8 14.Ba3 Bb7 15.Qe2 Rad8 16.Rfb1 Bc8 17.Rd1 h6 18.Rac1 Bd7 19.Bc2 Rc8 20.dxc5 bxc5 21.Qa6 Qb6 22.Qf1 c4 23.Rb1 Qc7 24.Qe1 Rcd8 25.Qe2 a6 26.Qf3 Nc6 27.Qe2 Ne5 28.Rb2 Bc8 29.Rbb1 a5 30.f4 Ng6 31.Qf2 Qa7 32.Nf1 Bd7 33.Rb2 Bc6 34.Rdb1 Rc8 35.Rb6 Nd7 36.R6b2 Ra8 37.Qg3 Ngf8 38.Bd6 Nh7 39.Rd1 Nhf6 40.Rdb1 Nh5 41.Qh4 Re6 42.Be5 Nxe5 43.fxe5 Rxe5 44.Rb6 Qc7 45.Nh2 Be8 46.Rb7 Qc5 47.Ng4 Rg5 48.Qf2 Rd8 49.Qf3 Qa3 50.Bf5 Qd6 51.h4 Rxf5 52.Qxf5 Ng3 53.Qe5 Qxe5 54.Nxe5 Ne2+ 55.Kf2 Nxc3 56.Rb8 Rxb8 57.Rxb8 Kf8 58.Nc6 Nxa4 59.Nxa5 c3 60.Rd8 Ke7 61.Rxd5 Ke6 62.e4 c2 63.Nb3 Nc3 64.Ra5 Nxe4+ 65.Ke3 Nd6 66.Nd4+ Kf6 67.Rc5 Ba4 68.Kd3 g6 69.Nxc2 Bxc2+ 70.Rxc2 Nf5 71.Rc6+ Ke5 72.Rc4 g5 73.Re4+ Kd5 74.hxg5 hxg5 75.Ra4 f6 76.Ra5+ Ke6 77.Ke4 Nd6+ 78.Kf3 f5 79.Ra4 Ke5 80.Rb4 Kf6 81.Rb6 Ke5 82.Rb8 Kd4 83.Rg8 Ne4 84.Ra8 Nd2+ 85.Ke2 Nc4 86.Rb8 Nd6 87.Rb6 Ne4 88.Rb4+ Ke5 89.Ke3 Ng3 90.Rb5+ Kf6 91.Rb6+ Ke5 92.Rb2 f4+ 93.Kf3 Kf5 94.Rb5+ Kg6 95.Kg4 Ne4 96.Rb6+ Nf6+ 97.Kf3 Kg7 98.Rb2 Kh6 99.Rb8 Kh5 100.Rh8+ Kg6 101.Ra8 Kf5 102.Ra5+ Kg6 103.Re5 Ng8 104.Re8 Nh6 105.Re6+ Kh5 106.Re1 Nf5 107.Re5 Nd4+ 108.Kf2 Nc2 109.Rc5 Ne3 110.Kf3 Nf1 111.Rc8 Nh2+ 112.Ke2 Kg6 113.Rc6+ Kh5 114.Rc3 Ng4 115.Rb3 Ne3 116.Kf2 Kg4 117.Rb1 Nd5 118.Rb5 Nc3 119.Rb3 Nd1+ 120.Kf1 Ne3+ 121.Kg1 Nc4 122.Rd3 Ne3 123.Kf2 Nf5 124.Rd5 Ng3 125.Ke1 Ne4 126.Rd3 Kf5 127.Ra3 Nd6 128.Ra4 Ne4 129.Ra7 Kg4 130.Ra3 Nc5 131.Kf1 Kh4 132.Ra5 Ne4 133.Re5 Nf6 134.Ke2 Ng4 135.Ra5 Ne3 136.Kf2 Ng4+ 137.Kf3 Nh2+ 138.Ke4 Kg4 139.Ra1 Kg3 140.Ra5 Kg4 141.Ra6 Nf1 142.Ke5 1/2-1/2 [/pgn]

[Dan Astrachan]

Fifth pairing: BlackMamba vs Fire

The losing streak continues for BlackMamba. The first game was lost on time due to BM crashing (in a position that seemed lost anyway).

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "2.1"]
[White "BlackMamba 2.0 x64"]
[Black "Fire 4 x64"]
[Result "0-1"]
[WhiteElo "3137"]
[BlackElo "3207"]
[ECO "D45"]
[Time "19:19:25"]
[Opening "D45b [Semi-Slav: 5.e3 Bd6"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "86"]
[Number "9"]
[Termination "time"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

1.c4 e6 2.Nf3 Nf6 3.d4 d5 4.Nc3 c6 5.e3 Bd6 6.c5 Bc7 7.b4 O-O 8.Be2 Nbd7 9.Qc2 e5 10.O-O e4 11.Nd2 Re8 12.b5 Nf8 13.f3 exf3 14.Nxf3 Ng4 15.Nd1 Ng6 16.Bd3 cxb5 17.Bxb5 Bd7 18.Bd3 Rc8 19.Qb3 Nh4 20.Qxd5 Nxf3+ 21.Rxf3 Bxh2+ 22.Kh1 Re6 23.Bf5 Qh4 24.Bxg4 Bc7+ 25.Kg1 Bb5 26.g3 Qxg4 27.Nf2 Qg6 28.Qxb7 Ba6 29.Qb1 Be2 30.Qxg6 Rxg6 31.Kg2 Bxf3+ 32.Kxf3 Rxg3+ 33.Ke2 f5 34.Rb1 Rg1 35.Nd3 h5 36.d5 h4 37.Kf2 Rh1 38.Ke2 g5 39.Nf2 Rg1 40.Nh3 Rg2+ 41.Kf1 Rc2 42.Nxg5 Rxc5 43.Bd2 Rxd5 0-1[/pgn]

In the second game, the snake collapsed in an English Symmetrical.

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.20"]
[Round "2.2"]
[White "Fire 4 x64"]
[Black "BlackMamba 2.0 x64"]
[Result "1-0"]
[WhiteElo "3207"]
[BlackElo "3137"]
[ECO "A34"]
[Time "21:19:08"]
[Opening "A34 [English: Symmetrical, 3 Knights, 3...e6])"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "182"]
[Number "10"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.c4 e6 2.Nf3 Nf6 3.Nc3 c5 4.e4 Nc6 5.Be2 e5 6.O-O Be7 7.d3 d6 8.Nd5 O-O 9.Bd2 Bd7 10.Rb1 a5 11.a3 b6 12.Nxe7+ Qxe7 13.h3 a4 14.b4 axb3 15.Rxb3 Rfb8 16.Qc2 Nd8 17.Qc3 Ne6 18.Rfb1 Ra6 19.Re1 h6 20.Qa1 Bc6 21.Qa2 Nd7 22.Qa1 Ndf8 23.Qa2 Ng6 24.Be3 Qf6 25.Bf1 Ngf4 26.Kh2 Ba4 27.Rb2 Be8 28.Ra1 Bc6 29.Qb1 Nf8 30.Ng1 Nd7 31.Ne2 Rba8 32.Rba2 Ne6 33.Nc3 Nd4 34.a4 Qd8 35.Qd1 Qc7 36.g3 Qd8 37.Bg2 Ra5 38.f4 exf4 39.gxf4 Qf6 40.Rb1 Rb8 41.Qd2 Rba8 42.Qf2 h5 43.Rab2 R8a7 44.Qg3 Ra8 45.h4 R5a7 46.Rf2 Rf8 47.Rg1 Rd8 48.Bh3 Kh7 49.Nb5 Bxb5 50.axb5 Rg8 51.Bxd7 Rxd7 52.Qg5 Qxg5 53.Rxg5 g6 54.Bxd4 cxd4 55.Ra2 Kg7 56.Rd5 Kf6 57.Ra6 Rb8 58.Rxd4 Ke6 59.Kg2 Rbb7 60.Rd5 Rdc7 61.f5+ gxf5 62.exf5+ Ke7 63.f6+ Ke6 64.Ra2 Rd7 65.Rxh5 Rbc7 66.Ra6 Rb7 67.Kf3 Rd8 68.d4 Kxf6 69.Ke4 Kg6 70.Rg5+ Kh6 71.Ra3 Re8+ 72.Kd5 Rc8 73.Rf3 Kh7 74.Rf6 Rbc7 75.Kxd6 Rxc4 76.Rxf7+ Kh6 77.Ke5 Rd8 78.Rf6+ Kh7 79.d5 Rc1 80.Rf7+ Kh6 81.Kf6 Rf1+ 82.Ke7 Rxf7+ 83.Kxf7 Rd7+ 84.Ke8 Ra7 85.d6 Ra8+ 86.Ke7 Ra7+ 87.d7 Rc7 88.Ke8 Rc5 89.d8=Q Re5+ 90.Kf7 Re8 91.Qxe8 Kh7 1-0
[/pgn]

[Dan Astrachan]

Sixth pairing: Stockfish Vs Gull

In a QGD, Gull opts for the Tarrasch variation (3...c5) and gets schooled by SF:

[pgn][Site "ChessGUI"]
[Date "2016.04.21"]
[Round "2.3"]
[White "Stockfish 180416 64 POPCNT"]
[Black "Gull 3 x64"]
[Result "1-0"]
[WhiteElo "3340"]
[BlackElo "3200"]
[ECO "D32"]
[Time "00:40:04"]
[Opening "D32n [QGD Tarrasch: 5.Nf3 Nc6]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "124"]
[Number "11"]
[Termination "GUI TB Mate in 20"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.dxc5 Bxc5 7.Qxd5 Qb6 8.Qe4+ Be6 9.e3 Nf6 10.Qb1 O-O 11.Be2 Rfd8 12.O-O Rac8 13.b3 Bb4 14.Bb2 Qc5 15.Na4 Qe7 16.Rd1 Rxd1+ 17.Qxd1 Ba3 18.Bxa3 Qxa3 19.Qc1 Qb4 20.Qb2 Ne4 21.Rc1 Rd8 22.Nc3 Nxc3 23.Rxc3 a5 24.Qc2 h6 25.Rd3 Rxd3 26.Bxd3 Qd6 27.Qd2 Kf8 28.h3 Ke7 29.Qc3 g6 30.Bf1 g5 31.Nd2 Qe5 32.Qc1 Kf8 33.g4 Kg7 34.Bg2 Bd5 35.Nf3 Qf6 36.Ne1 Bxg2 37.Kxg2 Nb4 38.a4 Na2 39.Qd2 Qc6+ 40.Nf3 Nc3 41.Qd4+ Kh7 42.Qd3+ Kg7 43.e4 Nxe4 44.Nd4 Nc5+ 45.Nxc6 Nxd3 46.Nxa5 Nc5 47.Kf3 Kf8 48.Ke3 Ke7 49.Kd4 b6 50.Nc4 Nxb3+ 51.Kd5 Kd7 52.Ne5+ Ke7 53.Kc6 Ke6 54.Nc4 Nc5 55.a5 bxa5 56.Kxc5 a4 57.Kb4 f5 58.Kxa4 Kf6 59.Kb5 fxg4 60.hxg4 Kg6 61.Kc5 h5 62.gxh5+ Kxh5 1-0 [/pgn]

In the second game, SF with Black opts for 3...Nf6 and gets an easy game ending with a threefold repetition:

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.21"]
[Round "2.4"]
[White "Gull 3 x64"]
[Black "Stockfish 180416 64 POPCNT"]
[Result "1/2-1/2"]
[WhiteElo "3200"]
[BlackElo "3340"]
[ECO "D37"]
[Time "03:01:12"]
[Opening "D37i [QGD: Classical, 5...O-O]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "103"]
[Number "12"]
[Termination "3-fold rep"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Be7 5.Bf4 O-O 6.Rc1 b6 7.e3 Bb7 8.cxd5 Nxd5 9.Nxd5 Qxd5 10.a3 Nd7 11.Bd3 c5 12.O-O Rfd8 13.Re1 Qh5 14.Bb5 Nf6 15.Be2 Qd5 16.dxc5 Qe4 17.Qb3 Bxc5 18.Red1 Rac8 19.h3 h6 20.Ne1 Bd5 21.Qc3 Qa4 22.b4 Ne4 23.Qd3 Bf8 24.f3 Nf6 25.Qa6 Bb3 26.Rxd8 Rxd8 27.Bb5 Qxa6 28.Bxa6 Ba4 29.e4 Ne8 30.Nd3 Bd6 31.h4 Kf8 32.Bxd6+ Nxd6 33.Ne5 Ke8 34.Kf2 f6 35.Ng6 e5 36.h5 Kd7 37.Nh4 Rb8 38.Nf5 Nxf5 39.exf5 Bc6 40.b5 Bd5 41.Ke3 Rd8 42.g4 Kd6 43.Bc8 Ke7 44.Rc3 Rd6 45.f4 exf4+ 46.Kxf4 Rd8 47.a4 Ba8 48.Rc7+ Kd6 49.Rc2 Ke7 50.Rc7+ Kd6 51.Rc2 Ke7 52.Rc7+ 1/2-1/2 [/pgn]

[Dan Astrachan]

Seventh pairing: Andscacs vs Critter

Andscacs gets its first win of the tournament against the veteran Critter in a French Symmetrical:

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.21"]
[Round "2.5"]
[White "Andscacs 0.86"]
[Black "Critter 1.6a 64-bit"]
[Result "1-0"]
[WhiteElo "3150"]
[BlackElo "3171"]
[ECO "A37"]
[Time "04:46:42"]
[Opening "A37g [English: Symmetrical, 5.Nf3 d6 6.O-O]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "103"]
[Number "13"]
[Termination "GUI adjudication"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

1.g3 c5 2.Nf3 g6 3.Bg2 Nc6 4.c4 Bg7 5.Nc3 d6 6.O-O Bf5 7.b3 Nf6 8.Bb2 O-O 9.d4 Ne4 10.Na4 e6 11.e3 a6 12.Qe2 Qa5 13.dxc5 Bxb2 14.Qxb2 Nxc5 15.Nxc5 Qxc5 16.Nh4 Rad8 17.Qe2 g5 18.Nxf5 Qxf5 19.Rad1 Rfe8 20.Rd2 Re7 21.f4 Qc5 22.Bxc6 bxc6 23.fxg5 Qxg5 24.Rd4 Kh8 25.Rdf4 Rdd7 26.Qd3 Qe5 27.e4 Ra7 28.Qe3 c5 29.Kg2 Qd4 30.Qf3 Qb2+ 31.Rf2 Qe5 32.Qg4 h6 33.Rf6 Kh7 34.Qe2 Rad7 35.h4 h5 36.Kh3 Kg7 37.Qe3 Kg8 38.g4 hxg4+ 39.Kxg4 Re8 40.Qh6 Qxe4+ 41.Kh3 Qh7 42.Rg2+ Kh8 43.Qe3 Rg8 44.Rh6 Rxg2 45.Kxg2 Rd8 46.Rxh7+ Kxh7 47.Qe4+ Kh8 48.Qf4 Rg8+ 49.Kh3 Kg7 50.Qg3+ Kh7 51.Qxd6 Rc8 52.Qd7 1-0[/pgn]

The return game is the shortest one so far, barely 57 minutes before a threefold repetition was reached:

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.21"]
[Round "2.6"]
[White "Critter 1.6a 64-bit"]
[Black "Andscacs 0.86"]
[Result "1/2-1/2"]
[WhiteElo "3171"]
[BlackElo "3150"]
[ECO "A37"]
[Time "06:34:55"]
[Opening "A37j [English: Symmetrical, 5.Nf3 e6 6.d3]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "62"]
[Number "14"]
[Termination "3-fold rep"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.g3 c5 2.Nf3 g6 3.c4 Nc6 4.Nc3 Bg7 5.Bg2 e6 6.d3 d5 7.O-O Nge7 8.cxd5 exd5 9.Bf4 O-O 10.Rc1 b6 11.d4 Nxd4 12.Nxd4 Bxd4 13.b4 Ba6 14.bxc5 bxc5 15.Re1 Rc8 16.Qd2 Re8 17.e4 Bxc3 18.Qxc3 dxe4 19.Rxe4 Nf5 20.Rxe8+ Qxe8 21.Re1 Qa4 22.h4 Nd4 23.Be5 Ne2+ 24.Rxe2 Bxe2 25.Bh8 Kf8 26.Qg7+ Ke7 27.Qe5+ Kd7 28.Qd5+ Ke8 29.Qe5+ Kd7 30.Qd5+ Ke8 31.Qe5+ Kd7 1/2-1/2[/pgn]

[Dan Astrachan]

Eigth pairing: Protector Vs Nirvanachess

A drawn Slav for the first game:

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.21"]
[Round "2.7"]
[White "Protector 1.9.0"]
[Black "Nirvanachess 2.2"]
[Result "1/2-1/2"]
[WhiteElo "3153"]
[BlackElo "3157"]
[ECO "D11"]
[Time "07:32:13"]
[Opening "D11g [Slav: 3.Nf3 Nf6]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "125"]
[Number "15"]
[Termination "3-fold rep"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Bd2 e6 5.e3 Be7 6.Bd3 O-O 7.O-O b6 8.cxd5 exd5 9.Nc3 Bb7 10.Qb1 Nbd7 11.Ne5 c5 12.f4 cxd4 13.exd4 Ne4 14.Qd1 Rc8 15.Rf3 Ndf6 16.Rh3 h6 17.Be1 Qd6 18.a4 a5 19.Kh1 Qe6 20.Qb3 Bb4 21.Re3 Bd6 22.Rd1 Bc7 23.Rf3 Nxc3 24.bxc3 Ne4 25.Rb1 Qf5 26.Rb2 Qe6 27.Re2 Rfe8 28.Qa2 f5 29.Qb1 Re7 30.Rb2 Ree8 31.Qc2 Re7 32.Qc1 Bb8 33.Qb1 Bc7 34.Rh3 Ree8 35.Qd1 Red8 36.Qb3 Re8 37.Rh5 Rf8 38.Bb5 Rfd8 39.Be2 Nf6 40.Rh3 Ne4 41.Rb1 g5 42.Bh5 Rf8 43.Qb5 gxf4 44.Qf1 Bxe5 45.dxe5 Qxe5 46.Rxb6 Bc6 47.Rh4 Nxc3 48.Bxc3 Qxc3 49.h3 Qe3 50.Qxf4 Qxf4 51.Rxf4 Rf6 52.Bf3 Kg7 53.Kh2 Be8 54.Rb7+ Kg6 55.Bxd5 Rc5 56.Bf3 Rd6 57.Ra7 Kg5 58.Kg3 Bd7 59.Rh4 Kg6 60.Bh5+ Kg5 61.Bf3 Kg6 62.Bh5+ Kg5 63.Bf3 1/2-1/2 [/pgn]

In a QGD, the dubious 15...f5 gave Nirvana the edge it needed to win the second game:

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.21"]
[Round "2.8"]
[White "Nirvanachess 2.2"]
[Black "Protector 1.9.0"]
[Result "1-0"]
[WhiteElo "3157"]
[BlackElo "3153"]
[ECO "D30"]
[Time "09:37:29"]
[Opening "D30t [QGD: 3.Nf3 Nf6 4.e3 c6 5.Nbd2"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "176"]
[Number "16"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.d4 d5 2.c4 c6 3.e3 Nf6 4.Nf3 e6 5.Nbd2 c5 6.a3 cxd4 7.exd4 Be7 8.c5 a5 9.Rb1 Qc7 10.b4 O-O 11.Be2 axb4 12.axb4 b6 13.O-O Rd8 14.Bb2 Ne4 15.Rc1 f5 16.Qc2 Bd7 17.Nxe4 fxe4 18.Ne5 Ba4 19.Qc3 Nd7 20.Nxd7 Bxd7 21.b5 Bg5 22.Rb1 Be8 23.c6 Ra2 24.Bg4 Bf7 25.f3 exf3 26.Rxf3 Bf6 27.Re1 Re8 28.Qb3 Raa8 29.Rff1 h5 30.Bd1 Bg6 31.Bc2 Qf7 32.Rf2 Bf5 33.Qg3 g6 34.Rd2 Kh7 35.Qb3 Bh4 36.Rf1 Qe7 37.Rdd1 Bg4 38.Rb1 Qg7 39.Kh1 Red8 40.Qe3 Rf8 41.Rbc1 Qh6 42.Qd3 Qg7 43.Rb1 Bf6 44.Qd2 Ra2 45.h3 Bf5 46.Bxf5 exf5 47.Rfe1 Qc7 48.Qb4 Rfa8 49.Re6 Bh4 50.Re5 Qf7 51.Qb3 R8a7 52.Kg1 f4 53.Rf1 Bf6 54.Ree1 Bg7 55.Rf2 R2a4 56.Qd3 Rb4 57.Rc2 Ra8 58.Kh1 Ra7 59.Rce2 Qf6 60.Rf2 Qg5 61.Ref1 Qd8 62.Re2 Qg5 63.Rf3 Rc7 64.Bc3 Rc4 65.g3 Ra7 66.gxf4 Qf5 67.Qxf5 gxf5 68.Rfe3 Kg6 69.Re6+ Kf7 70.Be1 Rxd4 71.Bf2 Rd1+ 72.Kg2 Bd4 73.Bh4 Rg1+ 74.Kh2 Rga1 75.Re7+ Rxe7 76.Rxe7+ Kg6 77.c7 Ra8 78.Rd7 Rc8 79.Rxd5 Bc3 80.Rd7 Bb2 81.Bf2 Bc1 82.Kg3 Bd2 83.Bxb6 Be1+ 84.Kf3 Kf6 85.Rd8 Rxc7 86.Bxc7 Ke6 87.Re8+ Kd7 88.Rxe1 Kxc7 1-0 [/pgn]

Rankings after 2 rounds (16 games):

------------------------------------------------------------------------------------
1: Stockfish 180416 64 POPCNT 3.5
2: Fire 4 x64 3.0
3: Andscacs 0.86 2.5
4: Nirvanachess 2.2 2.5
5: Critter 1.6a 64-bit 1.5
6: Gull 3 x64 1.5
7: Protector 1.9.0 1.5
8: BlackMamba 2.0 x64 0.0

[Dan Astrachan]

Ninth pairing: BlackMamba vs Gull

BlackMamba scores its first half-point in a game where it had a big advantage, but failed to exploit it:

[pgn][Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.21"]
[Round "3.1"]
[White "BlackMamba 2.0 x64"]
[Black "Gull 3 x64"]
[Result "1/2-1/2"]
[WhiteElo "3137"]
[BlackElo "3200"]
[ECO "B50"]
[Time "12:44:05"]
[Opening "B50i [Sicilian: 2.Nf3 d6 3.Nc3]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "172"]
[Number "17"]
[Termination "GUI TB adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

1.e4 c5 2.Nc3 d6 3.Nf3 e5 4.Bc4 Be7 5.O-O Nf6 6.d3 O-O 7.Bg5 Nc6 8.Bxf6 Bxf6 9.Nd5 g6 10.a4 Bg7 11.c3 Bd7 12.h3 Ne7 13.Ne3 Bh6 14.Ng4 Bg7 15.Re1 a6 16.Bb3 Rb8 17.Qd2 Kh8 18.Ne3 Nc6 19.Bd5 f5 20.Qe2 f4 21.Nc4 b5 22.axb5 axb5 23.Ncd2 Qb6 24.Qd1 Bf6 25.Qb3 Na5 26.Qa2 Nc6 27.Be6 Be8 28.Qb3 Ne7 29.Ra2 Qc7 30.Rea1 Bc6 31.Bd5 b4 32.Ra7 Qd8 33.c4 Bd7 34.R7a6 Qc7 35.Qc2 Nc6 36.Nb3 Rb6 37.R6a2 h6 38.Qd1 Kh7 39.Nh2 Qc8 40.Kh1 Kh8 41.Qc2 Rd8 42.Kg1 Kh7 43.Qc1 Qc7 44.Nf3 Rc8 45.Qf1 Rf8 46.Qd1 Rfb8 47.Qe2 Qc8 48.Nh2 h5 49.Nf3 Kh6 50.Nfd2 g5 51.Nf1 g4 52.hxg4 hxg4 53.Nh2 Kg7 54.Qd1 Kf8 55.Qe1 Ke8 56.Qc1 Kd8 57.d4 Be7 58.dxc5 dxc5 59.Qd1 Ke8 60.Nc1 Kd8 61.Bxc6 Qxc6 62.Nxg4 Qe6 63.f3 b3 64.Ra7 Rd6 65.Nd3 Qxc4 66.Ndxe5 Qd4+ 67.Qxd4 Rxd4 68.g3 c4 69.Rxd7+ Rxd7 70.Nxd7 Kxd7 71.Ne5+ Kd6 72.Nxc4+ Kc5 73.Ne5 Rg8 74.Kf2 fxg3+ 75.Kg2 Kb5 76.Rd1 Rd8 77.Rxd8 Bxd8 78.f4 Bb6 79.Nf3 Be3 80.Kxg3 Bc1 81.e5 Bxb2 82.Nd2 Kb4 83.Kg4 Bc3 84.e6 Bf6 85.Kf5 Bd8 86.Nxb3 Kxb3 1/2-1/2[/pgn]

Gull wins the return game with authority:

[pgn] [Event "Freezone - Episode I"]
[Site "ChessGUI"]
[Date "2016.04.21"]
[Round "3.2"]
[White "Gull 3 x64"]
[Black "BlackMamba 2.0 x64"]
[Result "1-0"]
[WhiteElo "3200"]
[BlackElo "3137"]
[ECO "B23"]
[Time "15:41:43"]
[Opening "B23c [Sicilian: Closed]"]
[TimeControl "40/2400:40/2400:40/2400"]
[PlyCount "113"]
[Number "18"]
[Termination "GUI adjudication"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

1.e4 c5 2.Nc3 d6 3.d4 cxd4 4.Qxd4 e5 5.Qd3 Nf6 6.Be3 Be7 7.f3 O-O 8.O-O-O Be6 9.g4 Nbd7 10.h4 Nb6 11.g5 Nfd7 12.Nd5 Bxd5 13.exd5 Rc8 14.b3 Qc7 15.c4 Nxc4 16.bxc4 b5 17.Kd2 bxc4 18.Qa3 f6 19.Ke1 Qd8 20.Bh3 Rc7 21.Be6+ Kh8 22.g6 Nc5 23.Bxc5 Rxc5 24.h5 f5 25.Kf1 h6 26.Rh2 e4 27.f4 Bf6 28.Rc2 Qb6 29.Qh3 c3 30.Ne2 Rc4 31.Kg2 Rb8 32.Bxf5 Rf8 33.Rdc1 Qb5 34.Be6 Qb6 35.Qg3 e3 36.Qh3 Bd4 37.Qf3 Bf6 38.Kh3 Qc5 39.Rb1 a5 40.Rb7 Rb4 41.Rf7 Rbb8 42.Rxf6 Rxf6 43.Rxc3 Qb6 44.Rxe3 Rff8 45.Rc3 a4 46.Ng3 Ra8 47.Nf5 Rxf5 48.Bxf5 Rg8 49.Be6 Re8 50.f5 Qa7 51.f6 a3 52.Rc6 Rf8 53.Qc3 Qe7 54.fxe7 Rf3+ 55.Kh4 Rf4+ 56.Bg4 Rxg4+ 57.Kxg4 1-0
[/pgn]