Monday, September 20, 2010

Chess.com Boots Out Yelena Dembo


Making the unusual headlines today is Chess.com's decision to unceremoniously boot out WGM Yelena Dembo. No detailed information was forthcoming from chess.com but word has spread that there was an "anomaly" in her CC games.

Her account (http://www.chess.com/members/view/YelenaDembo) on chess.com is currently being listed as "disabled".

Addendum: On chess.com's forums, a forummer Steve Collyer (UK) have put up his analysis of Ms Dembo's games vs 2200++ opponents. His findings are listed below.

Please note that this is not to be taken as the gospel truth. If you would like to find the correlation, feel free to use the posted games below for your own analysis with your own engines. Me? I would prefer if Ms Dembo's games get a good looking over by a respected GM. I still find the whole incident disturbing.

You can find Ms Dembo's responses on chessgames.com at: http://www.chessgames.com/~Yelena+Dembo

----- Steve Collyer's results ----

Deep Rybka 3 x64
Hash:256 Time:30s Depth:12-20ply

AMD Phenom x 4 2.30Ghz 4GB DDR2 RAM

YelenaDembo (Games: 20)
Top 1 Match: 530/723 ( 73.3% )
Top 2 Match: 638/723 ( 88.2% )
Top 3 Match: 676/723 ( 93.5% )
Top 4 Match: 698/723 ( 96.5% )

In another thread, he posted Ms Dembo's last 18 CC games and I quote:

"Here are the games which I will analyse. Please note that the games are the most recently completed vs 2200+ rateds with 35+ total moves. There are 18 of these, and to complete the usual 20 game requirement I selected the 2 most recent games by near 2200's with 35+ total moves:"

[Event "CM v Dalmatia - Board 1"]
[Site "Chess.com"]
[Date "2010.05.16"]
[White "YelenaDembo"]
[Black "Slow_Burn"]
[Result "1-0"]
[WhiteElo "2805"]
[BlackElo "2797"]
[TimeControl "1 in 5 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 a6 7.Qd2 e6 8.O-O-O Bd7 9.Kb1 Be7 10.f4 h6 11.Bh4 b5 12.a3 O-O 13.Nf3 Qb6 14.e5 dxe5 15.fxe5 Nd5 16.Nxd5 exd5 17.Bxe7 Nxe7 18.Qd4 Qe6 19.Bd3 Rab8 20.Qh4 Nc6 21.Rhe1 b4 22.a4 b3 23.c3 Bc8 24.Re3 Re8 25.h3 Na5 26.Nd4 Qe7 27.Qxe7 Rxe7 28.Ree1 Kf8 29.Nf5 Rc7 30.Nd6 Nc4 31.Nxc8 Rbxc8 32.Be2 Rd8 33.Rd4 Ke7 34.Bd1 Ke6 35.h4 Na5 36.Rg4 Rg8 37.Kc1 Rc6 38.h5 Rc5 39.Rf1 Ke7 40.Rgf4 Rf8 41.Rb4 Rc4 42.Rxc4 dxc4 43.Bf3 Rd8 44.Rh1 Ke6 45.Re1 g5 46.Bg4+ Ke7 47.Re4 Rd5 48.Bc8 Rc5 49.Bxa6 Ke6 50.Kd2 Rd5+ 51.Ke2 Rxe5 52.Rxe5+ Kxe5 53.Ke3 Kd5 54.g4 Ke5 55.Bc8 f6 56.Bf5 Nc6 57.Be4 Na5 58.Ba8 1-0

[Event "NaScp with Miss - Board 2"]
[Site "Chess.com"]
[Date "2010.05.01"]
[White "kingkoy301"]
[Black "YelenaDembo"]
[Result "0-1"]
[WhiteElo "2503"]
[BlackElo "2767"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.d4 Nf6 2.Nf3 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.h3 c5 7.dxc5 Nbd7 8.Be2 Ne4 9.Nxd5 e6 10.Nc7 e5 11.Nxa8 exf4 12.exf4 Bxb2 13.O-O Bxa1 14.Qxa1 Ndxc5 15.Rd1 Bd7 16.Ne5 Qc8 17.f3 Nf6 18.Qd4 Bf5 19.g4 Ne6 20.Qe3 Ng7 21.Qxa7 Be6 22.Nb6 Qc5+ 23.Kf1 Nfh5 24.gxh5 Nxh5 25.Qxb7 Nxf4 26.Ng4 Nxh3 27.Ke1 Bxg4 28.Nd5 Qf2+ 29.Kd2 Be6 30.Nf6+ Kg7 31.Qb2 Kh6 32.Ne4 Rd8+ 33.Kc1 Rxd1+ 34.Bxd1 Qe3+ 35.Kb1 Nf2 36.Nxf2 Qxf2 37.a4 Qd2 38.Qc1 Qxc1+ 39.Kxc1 Kg5 40.a5 h5 41.a6 h4 0-1

[Event "double challenge - Board 1"]
[Site "Chess.com"]
[Date "2010.02.10"]
[White "YelenaDembo"]
[Black "ashot_bag"]
[Result "1-0"]
[WhiteElo "2752"]
[BlackElo "2304"]
[TimeControl "1 in 5 days"]
[Termination "YelenaDembo won on time"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 exd4 5.Nxd4 Bd7 6.O-O g6 7.Nxc6 bxc6 8.Bc4 Bg7 9.Re1 Ne7 10.Nc3 O-O 11.Bg5 h6 12.Be3 c5 13.Qd2 Kh7 14.f4 Rb8 15.b3 Nc6 16.Rac1 Nd4 17.Bf2 Be6 18.Bf1 Qd7 19.Nd1 f5 20.c3 Nc6 21.exf5 Bxf5 22.g3 Rbe8 23.Rxe8 Rxe8 24.b4 Qe6 25.Ne3 Be4 26.bxc5 d5 27.Nc2 g5 28.Nd4 Qg4 29.fxg5 hxg5 30.Re1 Ne5 31.Bg2 Bf6 32.h3 Qh5 33.g4 Qg6 34.Bh1 Bxh1 35.Kxh1 Nc4 36.Qc2 Rxe1+ 37.Bxe1 Qxc2 38.Nxc2 1-0

[Event "10th Chess.com Tournament (2201+) - Round 1"]
[Site "Chess.com"]
[Date "2010.03.01"]
[White "YelenaDembo"]
[Black "wh47"]
[Result "1-0"]
[WhiteElo "2747"]
[BlackElo "2377"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 O-O 7.Bxc6 dxc6 8.Nxe5 Re8 9.d3 Bb4 10.c3 Rxe5 11.cxb4 Qd4 12.Qd2 Re8 13.Qc3 Rd8 14.Bf4 Be6 15.Bxc7 Ng4 16.Qxd4 Rxd4 17.f3 Rd7 18.Bf4 Nf6 19.Nc3 Rxd3 20.Red1 Rad8 21.b3 h5 22.Kf2 Kf8 23.Rxd3 Rxd3 24.Ne2 Ne8 25.Be3 Rd7 26.Nf4 Nf6 27.h4 Ke8 28.Bb6 g6 29.Ke3 Nh7 30.Nd3 f5 31.Ne5 Rg7 32.Rd1 fxe4 33.Rd8+ Ke7 34.Rb8 exf3 35.Rxb7+ Kf6 36.Bd8+ Kxe5 37.Rxg7 fxg2 38.Rxg6 Bd5 39.Kf2 Nf8 40.Rg5+ Kd4 41.Rxh5 Ne6 42.Bf6+ Kd3 43.Be5 Kc2 44.Rf5 Kb1 45.h5 Be4 46.Rf7 Ng5 47.Rg7 g1=Q+ 48.Kxg1 Nf3+ 49.Kf2 Nxe5 50.Ke3 Bc2 51.Kd4 Nf3+ 52.Kc3 1-0

[Event "10th Chess.com Tournament (2201+) - Round 1"]
[Site "Chess.com"]
[Date "2010.03.01"]
[White "saksipotku"]
[Black "YelenaDembo"]
[Result "0-1"]
[WhiteElo "2367"]
[BlackElo "2739"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.Nc3 Nf6 3.g3 Nc6 4.Bg2 Bc5 5.d3 d6 6.Na4 O-O 7.Ne2 Bb6 8.Nxb6 axb6 9.O-O Be6 10.c4 Qe7 11.f4 Bg4 12.h3 Bxe2 13.Qxe2 Nd7 14.Be3 Nc5 15.f5 Nd4 16.Qd2 Nd7 17.g4 f6 18.h4 Ra5 19.b3 Rfa8 20.Qb2 Ra3 21.Rfd1 c5 22.g5 Qe8 23.Kf2 Qh5 24.Rh1 Qg4 25.Bxd4 cxd4 26.gxf6 Nc5 27.Rhd1 gxf6 28.Bf3 Qxh4+ 29.Kg2 Kh8 30.Qf2 Qg5+ 31.Kf1 Nxb3 32.Rab1 Rxa2 33.Rb2 Rxb2 34.Qxb2 Qe3 35.Qxb3 Qxf3+ 36.Ke1 Qe3+ 37.Kf1 Rg8 0-1

[Event "10th Chess.com Tournament (2201+) - Round 1"]
[Site "Chess.com"]
[Date "2010.03.01"]
[White "wh47"]
[Black "YelenaDembo"]
[Result "0-1"]
[WhiteElo "2309"]
[BlackElo "2730"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nf6 5.c3 O-O 6.d4 Bb6 7.Bg5 h6 8.Bh4 d6 9.Bxc6 bxc6 10.a4 a5 11.dxe5 dxe5 12.Nxe5 Qxd1 13.Rxd1 Nxe4 14.Nd2 Re8 15.Ndc4 Bc5 16.Nxc6 g5 17.Bg3 f5 18.Bxc7 Bxf2+ 19.Kh1 Bc5 20.h3 Nf2+ 21.Kh2 Nxd1 22.Rxd1 f4 23.N4xa5 Bf2 24.b4 Bf5 25.Rf1 Bg3+ 26.Kg1 Bd3 27.Ra1 Re2 28.Ne5 f3 29.Nxd3 Rxg2+ 30.Kf1 Bxc7 31.Nc6 Rh2 32.Kg1 Rf8 33.Rf1 Rxh3 34.Rf2 g4 35.Nd4 Bg3 36.Rd2 Bh4 37.a5 Bg5 38.Rf2 Be3 0-1

[Event "10th Chess.com Tournament (2201+) - Round 1"]
[Site "Chess.com"]
[Date "2010.03.01"]
[White "YelenaDembo"]
[Black "saksipotku"]
[Result "1-0"]
[WhiteElo "2723"]
[BlackElo "2371"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.dxe5 Be7 6.O-O O-O 7.Nc3 Nxc3 8.bxc3 Nc6 9.Re1 f6 10.Rb1 fxe5 11.Nxe5 Nxe5 12.Rxe5 Bd6 13.Qh5 h6 14.Re1 Qf6 15.Qxd5+ Kh8 16.Be3 Qe5 17.Qxe5 Bxe5 18.Bc5 Bd6 19.Bxd6 cxd6 20.Re7 Rb8 21.h3 Rd8 22.Rb4 Bd7 23.Rd4 Bc6 24.Rg4 Rg8 25.Rg6 Rge8 26.Rc7 Rbc8 27.Rcxg7 Rg8 28.Rxg8+ Rxg8 29.Rxh6+ Kg7 30.Rxd6 Re8 31.f4 Re1+ 32.Kf2 Rd1 33.g4 Rh1 34.Rxc6 bxc6 35.Bf1 Rh2+ 36.Bg2 1-0

[Event "NaScp with Miss - Board 2"]
[Site "Chess.com"]
[Date "2010.02.05"]
[White "YelenaDembo"]
[Black "kingkoy301"]
[Result "1-0"]
[WhiteElo "2713"]
[BlackElo "2475"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 Nc6 2.Nf3 e6 3.d4 d5 4.Nbd2 Nf6 5.e5 Nd7 6.Nb3 Be7 7.c3 O-O 8.Bd3 a5 9.Bf4 a4 10.Nbd2 f6 11.exf6 Nxf6 12.Qc2 Bd6 13.Bg3 Bxg3 14.hxg3 h6 15.O-O Ng4 16.Nh4 Ne7 17.Rae1 a3 18.b4 Qd6 19.Ndf3 b6 20.b5 c5 21.bxc6 Qxc6 22.Ne5 Nxe5 23.Rxe5 Ba6 24.Bxa6 Rxa6 25.Rfe1 Rf6 26.Nf3 b5 27.Rb1 Ra8 28.Qd3 Rc8 29.Rb3 Qc4 30.Qd1 Ra8 31.Qb1 Nc6 32.Nd2 Qa4 33.Re3 Raf8 34.Nf3 Qa8 35.Rxb5 Na5 36.g4 Nc4 37.g5 Rf5 38.Rxe6 Rxf3 39.gxf3 Nd2 40.Qg6 Qa4 41.Qd3 Nxf3+ 42.Kg2 Nxg5 43.Re5 Nf3 44.Re3 Nh4+ 45.Kh3 Ng6 46.Qb1 Nf4+ 47.Kh2 Qa8 48.Rb7 Qc8 49.Rbe7 Qc6 50.Qg1 Nh5 51.f3 Rf5 52.Re8+ Rf8 53.Rxf8+ Kxf8 54.Qb1 Qf6 55.Qb8+ 1-0

[Event "10th Chess.com Tournament (2201+) - Round 1"]
[Site "Chess.com"]
[Date "2010.03.01"]
[White "YelenaDembo"]
[Black "olwann69"]
[Result "1-0"]
[WhiteElo "2690"]
[BlackElo "2371"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 g6 5.e5 Ng4 6.Bxc6 dxc6 7.h3 Nh6 8.d3 Nf5 9.O-O Bg7 10.Ne4 b6 11.a3 a5 12.Re1 O-O 13.c3 Ra7 14.g4 Nh6 15.Qc2 f5 16.exf6 exf6 17.d4 f5 18.gxf5 Bxf5 19.dxc5 Bxh3 20.Nfg5 Bf5 21.cxb6 Re7 22.Bf4 Be5 23.Qb3+ Kg7 24.Rad1 Qe8 25.Bxe5+ Rxe5 26.f4 Re7 27.Qc4 Ng4 28.Re2 h6 29.Qd4+ Kg8 30.Nd6 Rxe2 31.Nxe8 Rfxe8 32.b7 hxg5 33.Qc4+ R2e6 34.Rd6 Kf7 35.Rxc6 gxf4 36.b8=Q 1-0

[Event "Burning European Pawns - Board 4"]
[Site "Chess.com"]
[Date "2010.02.08"]
[White "YelenaDembo"]
[Black "Ambrosia"]
[Result "1-0"]
[WhiteElo "2697"]
[BlackElo "2528"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Na6 7.e5 Ng4 8.h3 Nh6 9.Be3 c5 10.Qe2 Nf5 11.Bxf5 Bxf5 12.O-O-O Rc8 13.g4 Bd7 14.Kb1 Re8 15.f5 Qa5 16.fxg6 hxg6 17.a3 cxd4 18.Bxd4 Be6 19.Rhe1 dxe5 20.Nxe5 Nb8 21.Qf2 Nc6 22.Nxc6 Rxc6 23.Bxg7 Kxg7 24.Ne2 Qb6 25.Qg3 Rd6 26.Nf4 Red8 27.Rxd6 Rxd6 28.h4 Qd4 29.Nxe6+ Rxe6 30.Rxe6 Qd1+ 31.Ka2 Qd5+ 32.Qb3 fxe6 33.Qxd5 exd5 34.Kb3 e5 35.c4 1-0

[Event "10th Chess.com Tournament (2201+) - Round 1"]
[Site "Chess.com"]
[Date "2010.03.01"]
[White "yohomes"]
[Black "YelenaDembo"]
[Result "0-1"]
[WhiteElo "2209"]
[BlackElo "2665"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2 Bc5 6.c3 b5 7.Bc2 O-O 8.Nxe5 Nxe5 9.d4 d5 10.O-O Bxd4 11.cxd4 Nc6 12.exd5 Qxd5 13.Nc3 Nxd4 14.Qd3 Qe5 15.f4 Qd6 16.Be3 Nxc2 17.Qxc2 Re8 18.Rad1 Qc6 19.Qf2 Ng4 20.Qf3 Qxf3 21.Rxf3 Bb7 22.Bd4 Bxf3 23.gxf3 Rad8 24.fxg4 b4 25.Be5 bxc3 26.Rxd8 Rxd8 27.Bxc3 Rd3 28.g5 h6 29.gxh6 gxh6 30.f5 Rf3 31.f6 Kh7 32.Kg2 Rf5 33.Kg3 Kg6 34.Kg4 Rxf6 35.Bxf6 Kxf6 0-1

[Event "Experience"]
[Site "Chess.com"]
[Date "2008.04.27"]
[White "YelenaDembo"]
[Black "bronkov"]
[Result "1/2-1/2"]
[WhiteElo "2482"]
[BlackElo "2355"]
[TimeControl "1 in 3 days"]
[Termination "Game drawn by agreement"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bc4 Ne5 8.Be2 Qg6 9.O-O d6 10.f4 Qxe4 11.Bf2 Bxd4 12.cxd4 N5g6 13.g3 Bh3 14.Bf3 Qf5 15.Re1 d5 16.Qb3 O-O 17.Nc3 Bg4 18.Bxd5 Nxd5 19.Qxd5 Qxd5 20.Nxd5 c6 21.Nc3 Rad8 22.d5 cxd5 23.Bc5 Rfe8 24.Rxe8+ Rxe8 25.Bxa7 Rd8 26.Bb6 Rd7 27.Nb5 Ne7 28.Rc1 Nc6 29.Rc2 f6 30.Rd2 g5 31.Kf2 Kg7 32.Bc5 Kg6 33.b3 Rd8 34.a4 Na5 35.Rb2 Nc6 36.b4 d4 37.a5 Rd5 38.Nxd4 Nxd4 39.Rd2 gxf4 40.Bxd4 1/2-1/2

[Event "Advanced 2"]
[Site "Chess.com"]
[Date "2008.04.26"]
[White "YelenaDembo"]
[Black "MM78"]
[Result "1-0"]
[WhiteElo "2496"]
[BlackElo "2238"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 Bg7 5.Qd2 c6 6.Nf3 O-O 7.O-O-O b5 8.e5 dxe5 9.Nxe5 Be6 10.h4 Qa5 11.a3 b4 12.Nb1 c5 13.h5 Ne4 14.Qd3 cxd4 15.Qxe4 dxe3 16.Nc4 Qg5 17.Nxe3 bxa3 18.Nxa3 Nd7 19.hxg6 hxg6 20.Bc4 Nc5 21.Qh4 Qxh4 22.Rxh4 Rab8 23.c3 Bc8 24.Nd5 Re8 25.Bb5 Bd7 26.Bxd7 Nxd7 27.Kc2 Nb6 28.Rb4 Nxd5 29.Rxb8 Rxb8 30.Rxd5 Rb7 31.Rd8+ Kh7 32.b4 e6 33.Kb3 Bf6 34.Ra8 Bh4 35.g3 Bf6 36.c4 Bd4 37.f3 Bf2 38.g4 Rb6 39.Nb5 Be3 40.g5 a6 41.Nc7 Rd6 42.c5 Rd3+ 43.Kc4 1-0

[Event "Experience"]
[Site "Chess.com"]
[Date "2008.03.23"]
[White "---Olivier---"]
[Black "YelenaDembo"]
[Result "1/2-1/2"]
[WhiteElo "2228"]
[BlackElo "2459"]
[TimeControl "1 in 3 days"]
[Termination "Game drawn by agreement"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 a5 8.O-O Na6 9.Bg5 h6 10.Bh4 Qe8 11.Ne1 Bd7 12.Nd3 b6 13.a3 a4 14.Qd2 Nh7 15.Rac1 Nc5 16.Nxc5 bxc5 17.Rb1 h5 18.b4 axb3 19.Rxb3 Bf6 20.Bxf6 Nxf6 21.Ra1 Rb8 22.Rxb8 Qxb8 23.f3 Qb6 24.Nb5 Bxb5 25.cxb5 c4+ 26.Kf1 Nxe4 27.fxe4 f5 28.exf5 Rxf5+ 29.Bf3 g5 30.Qc2 Rf6 31.Qxc4 g4 32.Qd3 Qc5 33.a4 Kg7 34.Ra2 gxf3 35.Rc2 Qa7 36.gxf3 Rg6 37.Qe4 Qg1+ 38.Ke2 Rg2+ 1/2-1/2

[Event "Let's Play!"]
[Site "Chess.com"]
[Date "2008.04.04"]
[White "YelenaDembo"]
[Black "RichardHayden"]
[Result "1-0"]
[WhiteElo "2450"]
[BlackElo "2266"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.f4 {Thematic Game - This is the starting position.}
exf4 3.Nf3 Ne7 4.d4 d5 5.Bd3 dxe4 6.Bxe4 Ng6 7.Bxg6 hxg6 8.Bxf4 Nc6 9.Nc3 Bf5 10.O-O Be7 11.d5 Nb4 12.Nd4 O-O 13.Nxf5 gxf5 14.a3 Na6 15.Qd3 Qd7 16.Be5 Bc5+ 17.Kh1 f6 18.Bg3 g6 19.b4 Bd6 20.Bxd6 cxd6 21.g4 Nc7 22.gxf5 g5 23.Rf2 a5 24.Rg1 axb4 25.axb4 Ra3 26.h4 Rf7 27.hxg5 Rh7+ 28.Rh2 Rxh2+ 29.Kxh2 Qh7+ 30.Kg2 Qh4 31.gxf6 Kf7 32.Qe4 Qxf6 33.Ne2 Ra8 34.Rh1 Re8 35.Qf3 Rg8+ 36.Kf1 Qa1+ 37.Kf2 Qa7+ 38.Ke1 Qa1+ 39.Kd2 Qf6 40.Rh7+ Rg7 41.Qh5+ Kf8 42.Rh6 Qg5+ 43.Qxg5 Rxg5 44.Rxd6 Ke7 45.Rb6 1-0

[Event "Let's Play!"]
[Site "Chess.com"]
[Date "2008.04.04"]
[White "YelenaDembo"]
[Black "______"]
[Result "1/2-1/2"]
[WhiteElo "2463"]
[BlackElo "2216"]
[TimeControl "1 in 3 days"]
[Termination "Game drawn by agreement"]

1.e4 e5 2.f4 {Thematic Game - This is the starting position.}
exf4 3.Nf3 d5 4.exd5 Nf6 5.Bc4 Nxd5 6.O-O Be6 7.Qe2 Be7 8.d4 O-O 9.Nc3 Nxc3 10.bxc3 Bxc4 11.Qxc4 Bd6 12.Ne5 Bxe5 13.dxe5 Nc6 14.Bxf4 Qe7 15.Rab1 Rab8 16.Rf3 a6 17.h3 Nxe5 18.Re3 Nxc4 19.Rxe7 b5 20.Rxc7 Rbc8 21.a4 Rxc7 22.Bxc7 Rc8 23.axb5 Na3 24.Ra1 Nxb5 25.Bb6 Nxc3 26.Rxa6 h6 27.Ra5 Ne2+ 28.Kf2 Rxc2 29.Kf3 Kh7 30.Ra7 Kg6 31.Be3 Nc1 32.Ra3 f6 33.h4 Na2 34.Ra4 Rb2 35.Ra7 h5 36.g4 hxg4+ 37.Kxg4 Rb4+ 38.Kf3 Nc3 39.h5+ Kxh5 40.Rxg7 Nb5 41.Bd2 1/2-1/2

[Event "Advanced 2"]
[Site "Chess.com"]
[Date "2008.03.30"]
[White "MM78"]
[Black "YelenaDembo"]
[Result "1/2-1/2"]
[WhiteElo "2299"]
[BlackElo "2544"]
[TimeControl "1 in 3 days"]
[Termination "Game drawn by agreement"]

1.e4 c5 2.Nf3 e6 3.d3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O Nge7 7.Re1 d6 8.Nbd2 O-O 9.c3 b5 10.Qc2 Rb8 11.Nf1 b4 12.Bd2 Qb6 13.Ne3 Ba6 14.Nc4 Bxc4 15.dxc4 Qa6 16.Rab1 Rb6 17.Red1 Rd8 18.Bf4 e5 19.Be3 Qxc4 20.Qa4 Qa6 21.Qxa6 Rxa6 22.Nd2 Rxa2 23.Nc4 Nc8 24.Bg5 N6e7 25.Bh3 h6 26.Bxe7 Nxe7 27.Nxd6 Nc6 28.Rd5 Bf8 29.Nc4 Rb8 30.Rc1 Be7 31.Kg2 bxc3 32.bxc3 Kg7 33.Bd7 Na5 34.Nxe5 Rbb2 35.Rf1 Bf6 36.Nd3 Rd2 37.Bb5 c4 38.Nb4 Rxd5 39.Nxd5 Rb2 40.Ba6 Rc2 41.Ra1 Bxc3 42.Nxc3 Nb3 43.Ra4 Rxc3 1/2-1/2

[Event "The Easter Tournament"]
[Site "Chess.com"]
[Date "2008.03.21"]
[White "YelenaDembo"]
[Black "______"]
[Result "1-0"]
[WhiteElo "2526"]
[BlackElo "2257"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bc4 Ne5 8.Be2 Qg6 9.O-O d6 10.f4 Qxe4 11.Bf2 Bxd4 12.cxd4 N5g6 13.g3 O-O 14.Nc3 Qf5 15.h4 Re8 16.h5 Nf8 17.d5 h6 18.Re1 Qd7 19.Rc1 c6 20.Bc4 Qd8 21.b4 a5 22.dxc6 bxc6 23.b5 Be6 24.Bf1 cxb5 25.Nxb5 Rc8 26.Qd3 d5 27.Qa3 Rc6 28.Rxc6 Nxc6 29.Rc1 Bd7 30.Qd6 Re6 31.Qxd5 Nb4 32.Qd2 Qb8 33.Nd4 Rd6 34.Qb2 Qd8 35.a3 Nd5 36.Nf3 Nf6 37.Bc5 Rd5 38.Ne5 Be8 39.Bb6 Qd6 40.Bf2 Rd1 41.Nc4 Qd7 42.Rxd1 Qxd1 43.Qe2 Qd5 44.Qe5 Qd1 45.Qxa5 Bd7 46.Ne3 Qc1 47.Qb4 Qa1 48.Qb3 Be6 49.Qd3 Qc1 50.a4 Qa1 51.Qd1 Qa2 52.Bd3 Bb3 53.Bc2 Ne4 54.Qd3 Bxc2 55.Qxc2 Qa1+ 56.Kg2 Nf6 57.Nf5 Ne6 58.Qb3 Nxh5 59.Ne7+ Kh7 60.Qc2+ g6 61.f5 1-0

[Event "Advanced 2"]
[Site "Chess.com"]
[Date "2008.03.30"]
[White "YelenaDembo"]
[Black "knorke"]
[Result "1-0"]
[WhiteElo "2463"]
[BlackElo "2198"]
[TimeControl "1 in 3 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.Nf3 Nf6 3.d4 Nxe4 4.Bd3 d5 5.dxe5 Nc6 6.O-O Bg4 7.Nc3 Nxc3 8.bxc3 Bc5 9.Re1 O-O 10.h3 Bh5 11.Rb1 b6 12.Bf4 h6 13.g4 Bg6 14.Bxg6 fxg6 15.Bg3 Na5 16.Qd3 g5 17.e6 Qf6 18.Kg2 c6 19.Ne5 Qxe6 20.Ng6 Qf7 21.Nxf8 Rxf8 22.Re5 Nc4 23.Rf5 Qe7 24.Rxf8+ Kxf8 25.Kf1 Qf6 26.Re1 Kf7 27.Qe2 Qe7 28.Qf3+ Qf6 29.Qxf6+ gxf6 30.Ke2 f5 31.gxf5 Kf6 32.Kd1 Kxf5 33.Re8 h5 34.Rc8 Na3 35.Ke2 Nb5 36.Kd3 d4 37.c4 Nc3 38.Rxc6 Nxa2 39.Rh6 h4 40.Bb8 Nc3 41.Bxa7 Ne4 42.Ke2 Nc3+ 43.Kf3 Na4 44.Rc6 Nb2 45.Bxb6 Bxb6 46.Rxb6 Nxc4 47.Rb4 Ne5+ 48.Ke2 Ke4 49.Rb6 Kf5 50.Ra6 Ng6 51.Ra8 Nf4+ 52.Kf3 Ng6 53.Rd8 Ne5+ 54.Ke2 Ke4 55.Re8 Kf5 56.Rf8+ Ke6 57.f4 Ng6 58.f5+ Ke7 59.Ra8 Ne5 60.Ra6 1-0

[Event "Experience"]
[Site "Chess.com"]
[Date "2008.03.23"]
[White "bronkov"]
[Black "YelenaDembo"]
[Result "1/2-1/2"]
[WhiteElo "2189"]
[BlackElo "2487"]
[TimeControl "1 in 3 days"]
[Termination "Game drawn by agreement"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5 d6 6.c4 Nf6 7.N1c3 a6 8.Nd4 Be7 9.Be2 O-O 10.O-O Bd7 11.Be3 Nxd4 12.Qxd4 Bc6 13.f4 Nd7 14.Qd2 Nc5 15.Bf3 Qc7 16.b4 Na4 17.Nxa4 Bxa4 18.Rac1 Rac8 19.Bd4 e5 20.Be3 exf4 21.Bxf4 Rcd8 22.Be3 Bf6 23.Bd1 Bxd1 24.Qxd1 Qe7 25.Re1 Rfe8 26.Bf2 Qc7 27.a4 Re6 28.a5 Rde8 29.Qd3 Be5 30.Rc2 Rh6 31.h3 Rg6 32.Rf1 Qd7 33.Be1 h6 34.Rcf2 Qc6 35.Rf5 Rc8 36.c5 Rc7 37.Qd5 Qe8 38.Bf2 Re6 39.Qd3 g6 40.Rf3 dxc5 41.Bxc5 Rd7 42.Qc4 Bc7 43.Re1 Rc6 44.Ree3 Bd6 45.Rd3 Qe7 46.Rd5 Bxc5+ 47.Rxc5 Rd1+ 48.Kf2 Rxc5 49.bxc5 Ra1 50.c6 bxc6 51.Qxc6 Rxa5 52.Qf6 Ra2+ 53.Kg3 Qxf6 54.Rxf6 a5 55.Ra6 a4 56.e5 a3 57.Ra8+ Kg7 58.Kf3 Ra1 59.Kg3 h5 60.Ra7 Kf8 61.Kf4 Ke8 62.Kg5 a2 63.Ra6 Ke7 64.Kh6 Kd7 65.Rd6+ Ke8 66.Ra6 Ke7 67.Kg5 Kd7 68.Rd6+ Kc7 69.Rd2 Kc6 70.Rf2 Kd5 71.Kf6 g5 72.Kxg5 Kxe5 73.Kxh5 f5 74.Kg5 Ke4 75.h4 Ke3 76.Rf3+ Ke2 77.Ra3 1/2-1/2

8 comments:

  1. Tom,

    There is quite some danger in non-experts trying to apply a complex statistical method. See the original academic articles on cheat detection and why the above can't be accepted as valid.

    Some open questions:

    1. When did the engine analysis begin, I.e. When were they considered to be out of the opening?
    2. Were forcing moves discarded, in other words where are one or two moves are far and away better than the rest.
    3. Was a consistent search depth used, or did they used a fixed time?

    We could go on.

    ReplyDelete
  2. Collyer manipulates the results by including forced moves (which will match with an engine 100% of the time) and using chess openings databases that are...obsolete. Consequently players being "investigated" will get higher match up rates because the opening moves from a more current openings database (which may or may not have engine moves in it but...) will also match the engine's first choice much of the time. Collyer is at best a "C" class player (USCF 1600) who investigates players based on ratings envy, or if a particular player is unpopular due to forum posts. Selection of players to investigate is never random and frequently malicious, and the results are known ahead of time. Collyer also uses different hardware and reflection time for the engines in order to get the results he is expecting. In the above games doesn't anyone find it interesting that many of the games were drawn vs. players rated 300-400 players lower? A GM with an Engine will almost always stomp a lower rated player even if they are using the same engine. Something reeks here.

    ReplyDelete
  3. To be fair to Collyer though, he has said that he didn't close Yelena's account and that the match rate method was only used by a group of volunteers to suggest possible cheats to chess.com staff.
    They apparently went on to investigate YD's games there & International Master David Pruess later decided to shut her account down & label her a cheat.

    Apparently the games above are totally error free. There isn't even the slightest mistake (-0.25 of a pawn or more) in any one & that is pretty damning. It would be interesting if anyone could prove otherwise!

    I read that the average opponent rating from the 20 chess.com games from the is 2342.85. That doesn't sound like patzer opposition to me.

    I should have thought chess.com would have wanted to be pretty certain before closing the account of an IM & wouldn't do it simply on a whim.

    ReplyDelete
  4. @ACFD

    Bullshit!

    Forced moves are always included, true, but they are included in benchmark games too, so final verdicts are NOT biased. Collyer has always used up-to-date opening database, moreover it was repeatedly proven that opening book has only little impact in final statistics.

    The truth is that some banned cheaters, reported by volunteers running Collyer's or similar method, poke their ugly head here and there to twaddle something about fairness and make personal attacks.

    ReplyDelete
  5. And this too comes from a player who was also banned for cheating off chess.com? Draw your own conclusions people.

    ReplyDelete
  6. As Marie, says it is very difficult to prove cheating when you're online.

    Just last week, in an online Blitz game, my opponent accused me of cheating using a computer. I looked up the game afterwards and I was laughing. Stockfish/Fritz didn't even look at my moves among the top 5. And it was only when the moves became forced, that my moves reached the top 3 moves played.

    I don't play correspondence chess btw. These days, rather than playing based on ability, it's more of a case of who has the better software/hardware (first) and then able to find the correct variation and to follow through on that variation after it's been computer checked.

    cheers

    ReplyDelete