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  #11  
Alt 20.02.2024, 13:02
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 10/10

A few bad moves by both sides and the game ends with a draw.

[Event "Active,Classic Book"]
[Round "10"]
[White "MCGP2024"]
[Black "Maia1900 6 ply"]
[Result "1/2-1/2"]
[ECO "C48"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bc5 5.O-O d6 6.d4 {Out of book} exd4 7.Nxd4 Bd7 8.Nxc6 bxc6 9.Bc4 Ng4 10.h3 Ne5 11.Bb3 Qh4 12.Na4 Bxh3 13.Nxc5 dxc5 14.Qe2 Be6 15.Qe3 c4 16.Ba4 O-O 17.Qf4 Qh5 18.Bd2 Rad8 19.Bc3 f6 20.f3 Ng6 21.Qxc7 Qg5 22.Rf2 Nf4 23.Kh1 Qg3 24.Be1 c3 25.b3 Rd7 26.Qxc6 Rfd8 27.Bb5 h5 28.Qxc3 Rd1 29.Bf1 h4 30.Rxd1 Rxd1 31.a3 h3 32.gxh3 Bxh3 33.Bxh3 Nxh3 34.Rf1 Nf2+ 35.Rxf2 Qxf2 36.Qc8+ Kf7 37.Qd7+ Rxd7 38.Bxf2 Rd2 39.Bxa7 Rxc2 40.Kg1 Rc3 41.Kf2 Rxb3 42.Bc5 Ke6 43.Kg3 Rc3 44.Bb4 Rb3 45.Bc5 Rc3 46.Bb4 Rb3 47.Bc5 1/2-1/2


The Four Knights, Spanish, Classical Defence was played until move 6.

Here is an example of the MCGP2024 making a bad move. This is the position after Maia had moved 11…Qh4

Black is in a good position with a strong King-side attack mounting and then the MCGP2024 played 12. Na4? Going after Black’s Bishop but 12. Qd2 would have been preferable. However, with the actual move played Black could have replied 12…Bg4 and White’s in danger of losing its Queen. However, the Maia bot did not ‘see’ the move 12…Bg4 and instead played 12…Bxh3? Play continued 13. Nxc5 dxc5 and the position is level:

The Maia had positioned its pieces well, with a strong King-side attack but threw it all away. It’s curious in away because in other games with such a mounting attack would relentlessly go in for the kill. I guess there are holes in its neuronal weights that the 6 ply search cannot help with.

The MCGP2024 can also make bad moves of course. Take the following position from the game:

Black had just moved 22…Nf4 and again it’s looking very dangerous for White. Here it played 23. Kh1?? Play could have continued 23…Qh4+ 24.Kg1 Qg3 25. Qxa7 Bh3 and White can do nothing about it! Alas, the 6 ply depth is not enough for the Maia bot to calculate this and the neuronal weights data doesn’t help!

There are quite a few mistakes and inaccuracies in this game and positions where Maia missed winning opportunities. Maybe the MCGP2024 was lucky in getting a draw!

So we have the final score of 6 – 4 to the MCGP2024.

The Wiki Elo list gives the MCGP2024 an active rating of 2339 so in this match that gives the Maia 1900 bot a rating of around 2269 which is not bad considering it was trained from human play rated at 1900 and only 6 ply search. I’m not sure how the depth searching affects the human-like play of Maia but I think it’s possibly wrong to call it Maia, maybe Hybrid Maia is more appropriate? I also wonder what depth setting is required to make Maia 1900 actually play at 1900? Maybe a future project.

Overall, it was an interesting match and highlighted what the Maia data can achieve with some look ahead. It also proved to me how good the MCGP2024 is and glad I own this little machine.

Ray
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RetroComp (22.02.2024), Tibono (20.02.2024)
  #12  
Alt 22.02.2024, 16:19
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Hot off the back of my first match here are the results of the second 10 game match between the MCGP2024 and the Chessnut Evo Maia1900 bot set to look 6 ply ahead. This time I set the MCGP2024 to use the Modern (HIARCS) book and expected its result to be less than from the first match where it used the smaller Classic book. This subject has been covered before so I won’t dwell on the subject just that the ChessGenius program seems to perform better with the smaller book.

As a change from my previous posts, will just make a few comments on particular games but will include analysis from my PC engine. I think by now we all realize these dedicated machines make mistakes and will miss chances.

In the first match I based my estimated ELO rating of the Maia bot using the rating for the MCGP2024 on the Wicki ELO List web site (2339 for Active play). However, as the performance of the ChessGenius program can vary depending on the opening book used and I don’t know which book was used to calculate the Wicki ELO value I’m not sure how accurate my value of 2269 can be, but the performance difference of 70 points will be in the ball park for that match.

In the second match the result is quite different and this time the Maia bot won with a score of 5 ½ - 4 ½. This is around 35 points difference or half that from the first round.

There was some very exciting play but also some big mistakes from both sides. The first game however, is a draw:

Game 1/10

[Event "Modern book"]
[Round "1"]
[White "MCGP2024"]
[Black "Maia1900 6ply"]
[Result "1/2-1/2"]
[ECO "C44"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Bc4 cxb2 6.Bxb2 Bb4+ 7.Nc3 Nf6 8.O-O O-O 9.Qb3 Bxc3 10.Qxc3 d6 11.Bd5 Be6 $6 {Deep HIARCS 15.3: -0.36/23} ( 11...Bg4 {Deep HIARCS 15.3: -0.72/23} 12.Rfe1 Bxf3 13.Qxf3 Ne5 14.Bxe5 dxe5 15.Bxb7 Rb8 16.Bd5 Nxd5 17.Red1 Qf6 18.Rxd5 Rb2 19.Qxf6 gxf6 20.Ra5 Rc8 21.g3 c5 22.Rc1 c4 23.Rc3 Kg7 24.Rxa7 Re2 25.a4 Rxe4 26.a5 ) 12.Bxc6 bxc6 13.Qxc6 Rb8 $6 {Deep HIARCS 15.3: -0.17/25} ( 13...Qd7 {Deep HIARCS 15.3: -0.51/24} 14.Qc2 Nh5 15.Ng5 Rab8 16.Bc1 Nf6 17.Bb2 Rb6 18.Bxf6 gxf6 19.Nxe6 fxe6 20.Rac1 c5 21.Qd3 Qg7 22.Qh3 Qe7 23.Rfe1 Rc8 24.Red1 Kh8 25.Qd3 a5 ) 14.Bxf6 Qxf6 15.Qxc7 Bg4 16.Nd2 $1 Rb2 17.Nb3 a6 $6 {Deep HIARCS 15.3: 0.00/26} ( 17...Qg6 {Deep HIARCS 15.3: -0.53/22} 18.Qc3 Re2 19.Rfe1 Qxe4 20.Nd4 Rxe1+ 21.Rxe1 Qd5 22.Nc6 Qxa2 23.Qd4 Be6 24.Qxd6 Re8 25.h3 a5 26.Qd4 Qc2 27.Nxa5 Qc7 28.Nb3 Qd8 29.Rb1 Qd5 30.Qa4 Bd7 31.Qa5 Qxa5 32.Nxa5 ) 18.h3 Be2 19.Rfb1 Bd3 20.Rxb2 Qxb2 21.f3 Bc2 $1 22.Qa5 Bxb3 23.axb3 Qxb3 24.Qxa6 d5 25.exd5 Qxd5 26.Kh1 h6 27.Qe2 Qd4 28.Qd1 Qf6 29.Ra7 Re8 30.Qd2 Re6 31.Kg1 Qe5 32.Rd7 Qg3 33.Kf1 Qh2 34.Rd4 $1 {White loses 0.02 pawn per move (no errors), Black loses 0.05 pawn per move (3 inaccuracies).} 1/2-1/2


They played the Scotch, Goering Gambit and eventually the MCGP2024 offered a draw and I accepted on behalf of the Maia to save my time!

Ray
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  #13  
Alt 22.02.2024, 16:21
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 2/10

[Event "Modern book"]
[Round "2"]
[White "Maia1900 6ply"]
[Black "MCGP2024"]
[Result "1-0"]
[ECO "B25"]

1.e4 c5 2.Nc3 Nc6 3.g3 $6 ( {Theory prefers} 3.Nf3 $1 ) ( {Or} 3.Nge2 $1 ) ( {Or} 3.Bb5 $1 ) 3...g6 4.Bg2 Bg7 5.d3 d6 6.Nge2 Bd7 $146 ( {Theoretical move is} 6...e6 ) ( {Or} 6...Nf6 ) ( {Or} 6...Rb8 ) 7.O-O Nf6 {Out of book} 8.h3 O-O 9.f4 Qc8 10.Kh2 Rb8 11.g4 $6 {Deep HIARCS 15.3: -0.31/22} ( 11.Be3 {Deep HIARCS 15.3: 0.00/21} 11...Re8 12.Qd2 b5 13.a3 a6 14.e5 dxe5 15.Bxc5 Qc7 16.b4 Bh6 17.Qe1 Bg7 18.Qd2 ) 11...Qc7 $6 {Deep HIARCS 15.3: +0.01/22} ( 11...b5 {Deep HIARCS 15.3: -0.31/22} 12.Nd5 Nxd5 13.exd5 Nd4 14.Nxd4 Bxd4 15.c3 Bg7 16.a3 a5 17.Bd2 Re8 18.Rb1 Qa6 19.f5 gxf5 20.gxf5 b4 21.c4 bxa3 22.bxa3 Rxb1 23.Qxb1 Be5+ 24.Kh1 ) 12.Ng3 $1 Ra8 13.f5 Qa5 14.g5 Ne8 15.Nd5 Be5 16.Bf4 Bxb2 17.Rb1 Qa3 $2 {Deep HIARCS 15.3: +1.42/20} ( 17...Bd4 {Deep HIARCS 15.3: +0.07/19} 18.Rxb7 Rd8 19.Ne2 Qa6 20.Qb1 e6 21.Nxd4 cxd4 22.Bxd6 exd5 23.Bxf8 Kxf8 24.fxg6 hxg6 25.exd5 Ne7 26.Qb4 Qd6+ 27.Qxd6 Nxd6 28.Rxa7 Be8 29.Be4 Nb5 30.Rb7 Nc3 31.Rb4 Nexd5 32.Rxd4 Bc6 33.Bxd5 Bxd5 34.Rg4 Bxa2 ) 18.Nh5 $2 {Deep HIARCS 15.3: +0.03/19} ( 18.c3 {Deep HIARCS 15.3: +1.42/20} 18...e6 19.fxe6 fxe6 20.e5 exd5 21.Bxd5+ Kh8 22.Bc1 Nc7 23.Bxb2 Qa6 24.c4 Nxd5 25.e6+ Nd4 26.exd7 Ne3 27.Rxf8+ Rxf8 28.Qe2 Kg8 29.Bxd4 cxd4 30.Ne4 b6 31.Rb2 Qa4 32.Nf6+ Kf7 33.Nxh7 ) 18...gxh5 $2 {Deep HIARCS 15.3: +1.40/20} ( 18...b5 {Deep HIARCS 15.3: +0.03/19} 19.c3 b4 20.cxb4 cxb4 21.Ng3 e6 22.Qd2 Bh8 23.Nxb4 Bc3 24.Nc2 Qa5 25.Qd1 Rd8 26.f6 e5 27.Be3 Qxa2 28.Qe2 Kh8 29.Rb7 Bc8 ) 19.Qxh5 Qxa2 $2 {Deep HIARCS 15.3: +3.94/19} ( 19...c4 {Deep HIARCS 15.3: +0.94/20} 20.f6 Kh8 21.fxe7 Rg8 22.Bc1 Be5+ 23.Kh1 Qa5 24.c3 Be6 25.d4 Bg3 26.Rxb7 Rg6 27.Rb1 h6 28.gxh6 Qxa2 29.Rb7 ) 20.c3 e5 $4 {Deep HIARCS 15.3: #15/20} ( 20...Ng7 {Deep HIARCS 15.3: +3.71/19} 21.Qe2 Qa5 22.Rxb2 Qd8 23.Rxb7 Kh8 24.f6 exf6 25.gxf6 Ne6 26.Bxd6 Bc8 27.Bxf8 Bxb7 28.Bg7+ Kg8 29.Qh5 Qd6+ 30.e5 Nxg7 31.fxg7 Qxe5+ 32.Qxe5 Nxe5 33.Nf6+ Kxg7 34.Bxb7 Rb8 35.Be4 Rb2+ 36.Kg3 Re2 37.Ng4 Nxg4 38.Kxg4 Rc2 39.c4 Rh2 40.Rg1 ) 21.Be3 Qa3 22.g6 fxg6 23.fxg6 hxg6 24.Qxg6+ Ng7 25.Bh6 Rf7 26.Qxf7+ Kh7 27.Qxg7# {White loses 0.09 pawn per move (1 mistake, 1 inaccuracy), Black loses 0.67 pawn per move (1 blunder, 3 mistakes, 1 inaccuracy).} 1-0


This is a surprising game in my opinion and reveals how weak the MCGP2024 is in defending against King-side attacks.

All was about level until MCGP2024’s 19th move and then it lost in dramatic style!
In the following position Maia with the white pieces has a massive King-side attack whilst Black’s pieces are in the side lines:

Here the MCGP2024 moved 20…e5?? It has no fear! But 21.g6 and it would have soon been all over. However, Maia did not see this move but the end result is the same and a checkmate in only 27 moves.

Ray

Geändert von Ray (22.02.2024 um 16:45 Uhr) Grund: Adding out of book comment
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  #14  
Alt 22.02.2024, 16:29
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 3/10

The shortest game of the match!

[Event "Modern book"]
[Round "3"]
[White "MCGP2024"]
[Black "Maia1900 6ply"]
[Result "0-1"]
[ECO "C63"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 $6 ( {Theory prefers} 3...a6 $1 ) ( {Or} 3...Nf6 $1 ) 4.d3 fxe4 5.dxe4 Nf6 6.O-O Bc5 7.Qd3 {Out of book} d6 8.Be3 $146 ( {Theoretical move is} 8.Qc4 $1 ) 8...Bxe3 9.Qxe3 O-O 10.Nbd2 Nh5 11.Qc3 Nf4 12.Qb3+ Kh8 13.Kh1 Qe8 14.Bc4 $6 {Deep HIARCS 15.3: -0.94/23} ( 14.g3 {Deep HIARCS 15.3: -0.39/22} 14...Ne6 15.Qe3 a6 16.Bc4 b5 17.Bd5 Bd7 18.Ne1 Qh5 19.Bxe6 Bxe6 20.f4 exf4 21.gxf4 Rae8 22.Rg1 Qh6 23.Qc3 Bd7 24.Nd3 Qf6 25.Qxf6 gxf6 26.f5 Rg8 27.Rxg8+ Rxg8 ) 14...Qh5 $1 15.Rg1 $6 {Deep HIARCS 15.3: -1.41/24} ( 15.Qe3 {Deep HIARCS 15.3: -0.85/21} 15...Bg4 16.g3 Nd5 17.exd5 Rxf3 18.Nxf3 Bxf3+ 19.Kg1 Nd4 20.Rfc1 b5 21.Bf1 Bxd5 22.Bg2 Ne2+ 23.Kh1 Nxc1 24.Rxc1 Qf7 25.Qd3 Bxg2+ 26.Kxg2 Rf8 27.Rf1 b4 28.a3 bxa3 29.bxa3 Qd7 30.Qe4 Qb5 31.c4 Qa5 32.Qd3 ) 15...g5 $1 16.c3 $2 {Deep HIARCS 15.3: -3.87/21} ( 16.Rgf1 {Deep HIARCS 15.3: -1.39/23} 16...g4 17.Ng1 Nd4 18.Qg3 Nxc2 19.Rac1 Nd4 20.Nb3 b5 21.Bd5 c6 22.Nxd4 cxd5 23.Nge2 dxe4 24.Nxf4 exf4 25.Qc3 Qe5 26.Nxb5 Ba6 27.Qxe5+ dxe5 28.a4 Rad8 29.Kg1 Bxb5 30.axb5 Rd2 31.Rc5 Re8 32.b4 Rb2 33.Ra1 e3 34.fxe3 fxe3 35.Re1 e2 36.Kf2 ) 16...g4 17.Ne1 Na5 $1 18.Qb5 $2 {Deep HIARCS 15.3: -5.97/23} ( 18.Qd1 {Deep HIARCS 15.3: -3.51/25} 18...Nxc4 19.Nxc4 Rf6 20.Nd2 Bd7 21.Nf1 Bb5 22.Ng3 Qh4 23.Nf5 Qxf2 24.Qxg4 Rg8 25.Qh4 Qxh4 26.Nxh4 Ne2 27.Nf5 Nxg1 28.Kxg1 Rg4 29.Nf3 Rxe4 30.Ng3 Rg4 31.b3 Bc6 32.Nd2 Rgf4 33.Re1 Rf8 34.Re2 a5 35.Nh5 R4f7 36.Ng3 Kg7 37.h4 ) 18...Nxc4 19.Qxc4 Be6 20.Qxc7 Ne2 $6 {Deep HIARCS 15.3: -3.92/22} ( 20...Rf7 {Deep HIARCS 15.3: -5.50/22} 21.Qxd6 Rd7 22.Qc5 Rxd2 23.Qe3 Rad8 24.c4 Rxb2 25.Qxa7 Rdd2 26.Rf1 Rxf2 27.Rxf2 g3 28.Nf3 Rxf2 29.Qb8+ Kg7 30.Qxe5+ Qxe5 31.Nxe5 Rxg2 32.hxg3 Rxg3 33.Rf1 Rg5 34.Rxf4 Rxe5 35.Rf2 Rxe4 36.Rg2+ Kh6 37.Rh2+ Kg6 ) 21.Rf1 $4 {Deep HIARCS 15.3: -24.87/26} ( 21.Nf1 {Deep HIARCS 15.3: -3.92/22} 21...Rxf2 22.Qxd6 g3 23.Nf3 gxh2 24.N3xh2 Nxg1 25.Ng3 Qg5 26.Rxg1 Qxg3 27.Qxe6 Rg8 28.b3 Qf4 29.Qf5 Qxf5 30.exf5 Rxf5 31.g4 Rf2 32.Re1 Rxa2 33.Rxe5 Ra3 34.Re3 Rxb3 35.Kg2 Kg7 36.Re7+ Kg6 ) 21...Rf6 22.h3 gxh3 23.g3 Raf8 24.Rg1 Nxg1 25.Qxd6 Qe2 $1 26.f4 {White loses 0.59 pawn per move (1 blunder, 2 mistakes, 2 inaccuracies), Black loses 0.05 pawn per move (1 inaccuracy).} 0-1


The Ruy Lopez, Schliemann Defence was played and it all started to go wrong for the MCGP2024 at move 10. The Maia bot again stormed into the enemy camp with all its pieces lined up in good positions. The pressure was overwhelming and the MCGP2024 resigned.

Ray

Geändert von Ray (22.02.2024 um 16:47 Uhr)
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  #15  
Alt 22.02.2024, 17:22
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 4/10

The MCGP2024 makes a comeback but not without a blunder!

[Event "Modern book"]
[Round "4"]
[White "Maia1900 6ply"]
[Black "MCGP2024"]
[Result "0-1"]
[ECO "B24"]

1.e4 c5 2.Nc3 Nc6 3.g3 $6 ( {Theory prefers} 3.Nf3 $1 ) ( {Or} 3.Nge2 $1 ) ( {Or} 3.Bb5 $1 ) 3...g6 4.Bg2 Bg7 5.d3 Rb8 $5 ( {Theory prefers} 5...d6 $1 ) 6.Nge2 d6 {Out of book} 7.O-O b5 $1 8.f4 Bd7 9.f5 Nf6 10.h3 b4 11.Nb1 O-O 12.g4 Qc8 13.Nd2 Ne5 14.Ng3 $6 {Deep HIARCS 15.3: -0.42/21} ( 14.a3 {Deep HIARCS 15.3: 0.00/20} 14...a5 15.Nf4 g5 16.Nd5 Nxd5 17.exd5 h6 18.axb4 axb4 19.Ne4 f6 20.b3 Ra8 21.Rxa8 Qxa8 22.Be3 Rb8 23.Re1 Rc8 24.Nd2 Qa2 25.Nc4 ) 14...Bc6 15.Nf3 $6 {Deep HIARCS 15.3: -0.49/20} ( 15.a3 {Deep HIARCS 15.3: -0.17/19} 15...Qc7 16.axb4 Rxb4 17.c3 Rb5 18.g5 Nfd7 19.Nf3 Nxf3+ 20.Rxf3 Qb6 21.h4 Ne5 22.Rf1 f6 23.Kh2 Rb8 24.d4 cxd4 25.cxd4 ) 15...Nxf3+ 16.Qxf3 Nd7 17.g5 $6 {Deep HIARCS 15.3: -1.06/21} ( 17.Qd1 {Deep HIARCS 15.3: -0.72/21} 17...Qb7 18.Kh2 Qc7 19.Qe2 e6 20.Rb1 exf5 21.gxf5 Qd8 22.Qf2 Be5 23.Bf4 Qh4 24.Bxe5 Nxe5 25.Qf4 Qxf4 26.Rxf4 g5 27.Rff1 f6 28.Ra1 Nf7 ) 17...Qa6 18.h4 $6 {Deep HIARCS 15.3: -1.71/20} ( 18.a3 {Deep HIARCS 15.3: -1.34/21} 18...c4 19.dxc4 Qxc4 20.Qd3 Bd4+ 21.Kh1 Qxd3 22.cxd3 Be5 23.Ne2 Bb5 24.Rf3 Nc5 25.axb4 Nxd3 26.Nc3 Nxc1 27.Rxc1 Bc4 28.Nd5 Bxd5 29.exd5 gxf5 30.Rc7 Rfe8 31.Rxa7 Rxb4 32.Rxf5 Rxb2 33.Rf1 Rc2 34.Rb7 Kg7 ) 18...Bd4+ $6 {Deep HIARCS 15.3: -1.13/22} ( 18...b3 {Deep HIARCS 15.3: -1.71/20} 19.c3 bxa2 20.Qe3 Bb5 21.Bh3 Bxd3 22.f6 exf6 23.Bxd7 Bxf1 24.Nxf1 Rbd8 25.Bg4 Qa4 26.Nd2 Rfe8 27.Be2 fxg5 28.hxg5 Be5 ) 19.Kh1 b3 20.c3 Bh8 21.f6 $6 {Deep HIARCS 15.3: -2.17/20} ( 21.Qe2 {Deep HIARCS 15.3: -1.47/20} 21...Be5 22.Kh2 bxa2 23.b4 Rxb4 24.Rxa2 Ra4 25.Rc2 Ra1 26.c4 Qa4 27.h5 Qb3 28.Rd2 Bc3 29.Rc2 Bd4 30.Bf3 Ne5 31.Rd2 Bc3 32.hxg6 hxg6 ) 21...Ne5 22.Qe2 $6 {Deep HIARCS 15.3: -2.47/22} ( 22.Qd1 {Deep HIARCS 15.3: -1.58/20} 22...exf6 23.gxf6 bxa2 24.d4 Nd3 25.Rf3 c4 26.Qd2 Rfe8 27.Rf1 Bd7 28.h5 Re6 29.Bh3 Rxf6 30.Bxd7 Rxf1+ 31.Nxf1 Qb7 32.Bh3 Nxc1 33.Qxc1 Qxb2 34.Qxb2 Rxb2 35.hxg6 hxg6 36.Bg4 Bf6 37.Bd7 g5 38.Bc6 g4 39.Bd5 ) 22...exf6 23.gxf6 bxa2 24.Nf5 $4 {Deep HIARCS 15.3: -5.10/21} ( 24.d4 {Deep HIARCS 15.3: -1.87/22} 24...Bb5 25.Qd2 cxd4 26.cxd4 Nd7 27.Rf3 Bxf6 28.Bh3 Bg7 29.b3 Rbc8 30.Bb2 f5 31.Nxf5 gxf5 32.Rg3 Rf7 33.d5 Ne5 34.Bxf5 Bd7 35.Bxd7 Rxd7 36.Qg2 Ng6 37.Bxg7 Rxg7 38.Rxa2 ) 24...gxf5 25.Rxf5 h5 $2 {Deep HIARCS 15.3: 0.00/24} ( 25...Bxf6 {Deep HIARCS 15.3: -5.09/20} 26.Rxf6 Qxd3 27.Qxd3 Nxd3 28.Rxa2 Nxc1 29.Rxa7 Rxb2 30.Rxd6 Rc8 31.Rf6 Bb7 32.Rf5 Nd3 33.Rg5+ Kf8 34.e5 Bxg2+ 35.Rxg2 Rxg2 36.Kxg2 Nxe5 37.Kg3 Re8 38.Ra4 Nd3 39.Kf3 Kg7 40.Re4 Rd8 41.Ke2 Kh6 42.Rc4 Kh5 43.Ke3 ) 26.Qe3 $4 {Deep HIARCS 15.3: -4.39/21} ( 26.Qxh5 {Deep HIARCS 15.3: 0.00/24} 26...Ng6 27.Qh6 Bxf6 28.Rxf6 Qxd3 29.Rxg6+ fxg6 30.Qxg6+ Kh8 31.Qh6+ Kg8 32.Qg6+ ) 26...Ng6 27.Qh6 Rfd8 $4 {Deep HIARCS 15.3: +1.88/23} ( 27...Rfe8 {Deep HIARCS 15.3: -3.47/20} 28.Rxh5 Bxf6 29.Qh7+ Kf8 30.Rf5 Re6 31.h5 Ne5 32.Rxf6 Rxf6 33.Bg5 Ke7 34.Bxf6+ Kxf6 35.d4 Rxb2 36.dxe5+ Ke7 37.Qf5 Qd3 38.exd6+ Qxd6 39.Rf1 Kd8 40.Kg1 Rb1 41.e5 Bxg2 42.Rxb1 axb1=Q+ 43.Qxb1 Qd5 44.Qb8+ Ke7 45.Qxa7+ Ke6 46.h6 Kxe5 ) 28.Rxh5 Bxf6 29.Qh7+ Kf8 30.Rf5 Qxd3 31.Rxf6 Ne5 32.Bh6+ $2 {Deep HIARCS 15.3: -0.67/21} ( 32.Rxa2 {Deep HIARCS 15.3: +0.91/20} 32...a6 33.Rf1 Ke8 34.Bg5 Kd7 35.Rxf7+ Nxf7 36.Qxf7+ Kc8 37.Bxd8 Kxd8 38.Kh2 Rb7 39.Qf6+ Kc7 40.e5 Bxg2 41.Qxd6+ Qxd6 42.exd6+ Kxd6 43.Kxg2 Kd5 44.Kf3 Kc4 45.h5 Kb3 46.Ra5 c4 47.Rc5 Rh7 48.Kg4 Rh8 49.Rc6 ) 32...Ke8 33.Raf1 $4 {Deep HIARCS 15.3: -4.20/21} ( 33.Rxa2 {Deep HIARCS 15.3: -0.72/19} 33...Qb1+ 34.Rf1 Qxa2 35.Bh3 Bxe4+ 36.Qxe4 Rxb2 37.Bf4 Re2 38.Qh7 Ng6 39.Qg8+ Nf8 40.Kg1 Qc2 41.Bg5 Qg6 42.Qxg6 Nxg6 43.Bxd8 Kxd8 44.Rxf7 Re7 45.Rf6 Nxh4 46.Rxd6+ Kc7 47.Ra6 Re3 48.Bf1 Kb8 49.Ra3 Rg3+ 50.Kf2 Nf5 51.Ke1 Nd6 52.Kd2 Ne4+ 53.Kc2 ) 33...Bd5 $1 34.Qg7 $2 {Deep HIARCS 15.3: -9.48/21} ( 34.Bg5 {Deep HIARCS 15.3: -4.34/19} 34...Bc4 35.Rc1 Kd7 36.b4 Kc7 37.Qf5 Qg3 38.Bf1 Bxf1 39.Qxf1 Rh8 40.Qf4 Qh3+ 41.Qh2 Qxh2+ 42.Kxh2 Ng4+ 43.Kg3 Nxf6 44.Bxf6 Rhg8+ 45.Kf3 Rg6 46.e5 Re8 47.Ra1 dxe5 48.Bg5 f6 ) 34...Bc4 $1 35.Bf4 Qxf1+ $1 36.Bxf1 a1=Q 37.Bxe5 dxe5 38.Qg8+ Ke7 39.Qg5 Be6 40.Kg1 Kd6 $1 41.Qd2+ Kc6 42.Qh6 Qe1 $1 43.Rxe6+ fxe6 44.Qxe6+ Rd6 45.Qf7 Qg3+ 46.Kh1 Qxh4+ 47.Kg2 Qg4+ 48.Kf2 Rxb2+ 49.Ke3 Qg3+ 50.Qf3 Qg5+ 51.Qf4 Qxf4# {White loses 0.41 pawn per move (3 blunders, 2 mistakes, 6 inaccuracies), Black loses 0.14 pawn per move (1 blunder, 1 mistake, 1 inaccuracy).} 0-1


This time the Maia bot is again trying a King-side attack:

It looks quite bad for Black but the position is not straight forward. Black is up a Knight, has a Pawn keeping one of White’s Rooks busy, and White’s Bishops are not exactly helping a great deal. Black does have to be very careful though!

A little later and the position is:

Here Maia played 32. Bh6+ Why not take the troublesome pawn on a2? Play continued 32…Ke8 33. Raf1?? Should have taken the pawn! From here the MCGP2024 played correctly and won the game. I think the Maia bot likes to check at the cost of making a better move.

An interesting game!

Ray
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  #16  
Alt 22.02.2024, 17:27
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 5/10

The Pirc opening ending in 3-fold repetition.

[Event "Modern book"]
[Round "5"]
[White "MCGP2024"]
[Black "Maia1900 6ply"]
[Result "1/2-1/2"]
[ECO "B07"]

1.Nf3 g6 2.e4 Bg7 3.d4 d6 4.c3 Nf6 5.Bd3 O-O 6.O-O Nc6 7.Re1 e5 8.h3 Nh5 $6 ( {Theory prefers} 8...Re8 $1 ) 9.Be3 $5 ( {Theory prefers} 9.Bg5 ) 9...Nf4 10.Bxf4 {Out of book} 10...exf4 11.Qb3 Na5 12.Qa4 $6 {Deep HIARCS 15.3: +0.10/21} ( 12.Qa3 {Deep HIARCS 15.3: +0.38/23} 12...c5 13.b4 cxb4 14.Qxb4 b6 15.Na3 Nc6 16.Qb2 Bb7 17.Qd2 g5 18.Bc2 Re8 19.Qd3 Na5 20.e5 Bxf3 21.Qxf3 dxe5 22.dxe5 Qe7 23.Nb5 Qc5 24.Nd6 Bxe5 25.Nxe8 Rxe8 26.Rad1 ) 12...b6 $6 {Deep HIARCS 15.3: +0.75/23} ( 12...c5 {Deep HIARCS 15.3: +0.10/21} 13.b4 Nc6 14.b5 Na5 15.Nbd2 b6 16.e5 Be6 17.Bc4 d5 18.Bd3 c4 19.Bc2 Bd7 20.Qb4 Re8 21.a3 a6 22.bxa6 Rxa6 23.Kh1 Nb7 24.Qb2 b5 ) 13.Nbd2 $6 {Deep HIARCS 15.3: +0.39/23} ( 13.b4 {Deep HIARCS 15.3: +0.75/23} 13...Nb7 14.Nbd2 a5 15.b5 Qd7 16.Bc4 Qe7 17.Rac1 Be6 18.Bd5 Rab8 19.Qc4 Rfe8 20.Qd3 Nd8 21.a4 Bd7 22.e5 dxe5 23.Nxe5 Bxe5 24.Rxe5 Ne6 25.Qe4 ) 13...Bd7 14.Bb5 c6 15.Bd3 c5 16.Bb5 Bxb5 17.Qxb5 a6 18.Qa4 b5 19.Qa3 cxd4 20.cxd4 Nc6 21.d5 Ne5 22.Nxe5 Bxe5 23.Nf3 Qf6 24.Nxe5 Qxe5 25.Rac1 Rfe8 26.h4 $6 {Deep HIARCS 15.3: 0.00/28} ( 26.b3 {Deep HIARCS 15.3: +0.45/25} 26...a5 27.f3 b4 28.Qa4 Qd4+ 29.Kh1 Kg7 30.Qd7 Red8 31.Qe7 Qf6 32.Qc7 Qb2 33.Rc2 Qd4 34.Qe7 Qf6 35.Qb7 Rdb8 36.Qd7 Rd8 37.Qa4 h5 38.Rec1 Rdb8 39.Qc6 Rd8 40.Qb5 Rdb8 41.Qa4 Rd8 42.Qc6 g5 43.Qc4 ) 26...a5 27.Qc3 Qe7 $6 {Deep HIARCS 15.3: +0.27/25} ( 27...b4 {Deep HIARCS 15.3: 0.00/26} 28.Qxe5 Rxe5 29.Kf1 Rae8 30.f3 f5 31.exf5 gxf5 32.Rxe5 Rxe5 33.Rc4 Rxd5 34.Ke2 Re5+ 35.Kd2 Rd5+ 36.Kc2 Kf7 37.Rxf4 Rc5+ 38.Kd3 Kf6 39.g4 Ke6 40.Kd2 Re5 41.Kd3 Rc5 ) 28.h5 $1 b4 29.Qd4 Qg5 $1 30.hxg6 hxg6 31.f3 Qg3 32.Qf6 Re5 33.Re2 Rh5 34.Rc7 $6 {Deep HIARCS 15.3: 0.00/30} ( 34.Rec2 {Deep HIARCS 15.3: +0.92/24} 34...Kh7 35.Qxd6 Qh2+ 36.Kf1 Qg3 37.Qc5 Rh1+ 38.Ke2 Qxg2+ 39.Qf2 Qxf2+ 40.Kxf2 Rh2+ 41.Kf1 Rh5 42.Rc8 Ra6 43.Kg2 Rg5+ 44.Kf2 Rh5 45.R8c6 Ra8 46.R1c2 Kg7 47.Ke2 Rh3 48.b3 Rah8 49.Rc7 Rh2+ 50.Kd3 R8h3 51.Rxh2 ) 34...Rf8 35.a3 b3 36.Rf2 a4 37.Qd4 $1 Qh2+ 38.Kf1 Qh1+ 39.Ke2 Qg1 40.Qd1 Rh1 41.Qxg1 Rxg1 42.Rc6 $6 {Deep HIARCS 15.3: 0.00/27} ( 42.Kd3 {Deep HIARCS 15.3: +0.32/28} 42...Kg7 43.Rd2 Rh8 44.Rc6 Rh2 45.e5 Rh5 46.Rxd6 Rxe5 47.Kc3 Rg5 48.Ra6 Rc1+ 49.Kd4 Rc2 50.Rd3 Rxb2 51.d6 Rc2 52.d7 Rgc5 53.Rxa4 b2 54.Rb3 Rc7 55.d8=Q Rd2+ 56.Ke5 Rxd8 57.Rxb2 g5 58.Ra5 Rdc8 59.Kf5 Rc5+ 60.Rxc5 Rxc5+ 61.Ke4 ) 42...Kg7 43.Kd3 Rh8 $2 {Deep HIARCS 15.3: +1.43/25} ( 43...Rd1+ {Deep HIARCS 15.3: +0.25/25} 44.Rd2 Rxd2+ 45.Kxd2 Rh8 46.Rxd6 Rh2 47.e5 Rxg2+ 48.Kd3 Rxb2 49.Rb6 Rf2 50.Ke4 g5 51.d6 b2 52.Kf5 Rxf3 53.Rxb2 Re3 54.Rd2 f3 55.d7 f2 56.Rxf2 Rd3 57.Kxg5 Rxd7 58.Rf4 Ra7 59.Kf5 Kf8 60.Rh4 Ke7 61.Rb4 ) 44.Kc3 $2 {Deep HIARCS 15.3: 0.00/26} ( 44.Rxd6 {Deep HIARCS 15.3: +1.43/25} 44...Rc8 45.Rd2 g5 46.Rb6 Rc2 47.d6 Rxd2+ 48.Kxd2 Rxg2+ 49.Kd3 Kf6 50.e5+ Ke6 51.Rb7 Rg1 52.Re7+ Kf5 53.d7 Rd1+ 54.Kc4 g4 55.fxg4+ Kg6 56.e6 fxe6 57.Rxe6+ Kh7 58.Re4 Rxd7 59.Rxf4 Rd2 60.Kb5 Kg6 61.Kxa4 Rxb2 62.Rf3 Kg5 63.Rxb3 Rg2 64.Rb5+ Kf4 65.Rb4+ Kf3 ) 44...Rh2 45.Kb4 $6 {Deep HIARCS 15.3: -0.48/24} ( 45.Rxd6 {Deep HIARCS 15.3: +0.10/24} 45...Rhxg2 46.Rxg2 Rxg2 47.e5 Rc2+ 48.Kd3 Rxb2 49.Rb6 Rf2 50.Ke4 Rd2 51.d6 f5+ 52.Kxf4 Kf7 53.d7 Ke7 54.e6 b2 55.Kg5 Rd3 56.Rxb2 Kxe6 57.Rb7 Ke7 58.f4 Rxa3 59.Kxg6 Rd3 60.Ra7 Rd5 61.d8=Q+ Kxd8 62.Rxa4 Kd7 63.Ra6 Ke7 64.Rf6 Ra5 ) 45...Rgxg2 46.Rxg2 Rxg2 47.Kxa4 Rxb2 48.Rb6 $4 {Deep HIARCS 15.3: -7.85/24} ( 48.Rxd6 {Deep HIARCS 15.3: -1.00/21} 48...Rf2 49.Kxb3 Rxf3+ 50.Kc4 g5 51.Rb6 Rxa3 52.d6 Ra8 53.Kd4 Kf6 54.Rb5 Rd8 55.Rf5+ Ke6 56.Rxg5 Rxd6+ 57.Kc5 f3 58.Rf5 Rd7 59.Rxf3 Ke5 60.Rf1 Kxe4 61.Kc6 Ra7 62.Kd6 Ke3 63.Re1+ Kf2 ) 48...g5 $1 49.Rb4 Rf2 $2 {Deep HIARCS 15.3: -1.38/25} ( 49...g4 {Deep HIARCS 15.3: -8.63/22} 50.fxg4 f3 51.Rxb3 Rxb3 52.Kxb3 f2 53.a4 f1=Q 54.a5 Qa6 55.g5 Qxa5 56.Kc2 Kg6 57.Kd3 Qb5+ 58.Ke3 Qb6+ 59.Kf3 Qb3+ 60.Kf2 Qc2+ 61.Kf3 Qc3+ 62.Ke2 Qc4+ 63.Kf3 Qf1+ 64.Kg3 Qd3+ 65.Kg2 Qd2+ 66.Kf3 Qd1+ 67.Kf2 ) 50.Rxb3 Kf6 51.Kb5 Ke5 52.a4 g4 $1 53.fxg4 f3 54.a5 Kxe4 55.Rb4+ Kxd5 $6 {Deep HIARCS 15.3: 0.00/20} ( 55...Ke5 {Deep HIARCS 15.3: -0.71/18} 56.Rb3 Kf4 57.Kc6 Ra2 58.Rb7 f6 59.Kxd6 f2 60.Rb1 Rxa5 61.Rf1 Ra6+ 62.Ke7 Ra7+ 63.Ke6 Ke3 64.Rxf2 Kxf2 65.Kxf6 Rb7 66.g5 Ke2 ) 56.Rf4 Rb2+ 57.Ka4 f2 58.Ka3 Re2 59.a6 Re3+ 60.Kb2 Re2+ 61.Ka3 Re3+ 62.Kb2 Re2+ 63.Ka3 {White loses 0.16 pawn per move (1 blunder, 1 mistake, 6 inaccuracies), Black loses 0.15 pawn per move (2 mistakes, 3 inaccuracies).} 1/2-1/2


Ray
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  #17  
Alt 22.02.2024, 18:11
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 6/10

The Robatsch Defence, Root variation was played to another draw by 3-fold repetition.

[Event "Modern book"]
[Round "6"]
[White "Maia1900 6ply"]
[Black "MCGP2024"]
[Result "1/2-1/2"]
[ECO "B06"]

1.e4 g6 2.d4 d6 3.Nc3 a6 4.Be3 b5 5.Qd2 Bb7 6.O-O-O $6 {Deep HIARCS 15.3: +0.08/22} ( 6.f3 {Deep HIARCS 15.3: +0.39/23} 6...Nd7 7.g4 e6 8.O-O-O h5 9.gxh5 Rxh5 10.Kb1 Nb6 11.Nh3 Qf6 12.Nf4 Rh4 13.Ng2 Rh7 14.d5 b4 15.Ne2 exd5 16.Qxb4 dxe4 17.Bxb6 cxb6 18.Qxb6 Qe7 19.fxe4 Qxe4 ) 6...Nd7 {Out of book} 7.f3 Bg7 8.h4 Ngf6 $6 {Deep HIARCS 15.3: +0.50/22} ( {Theoretical move is} 8...h5 $1 ) ( 8...h5 {Deep HIARCS 15.3: +0.14/22} 9.Kb1 Rc8 10.g3 Ngf6 11.Bh3 O-O 12.Nce2 e6 13.Nf4 c5 14.Nxe6 fxe6 15.Bxe6+ Kh8 16.Ne2 cxd4 17.Bxd4 Qe7 18.Nf4 Kh7 19.Be3 d5 20.exd5 Rfe8 21.d6 ) 9.g4 O-O $6 {Deep HIARCS 15.3: +1.31/22} ( 9...h6 {Deep HIARCS 15.3: +0.57/21} 10.h5 g5 11.Nce2 Nb6 12.Ng3 Nfd7 13.Nh3 e6 14.Kb1 Qe7 15.Be2 O-O-O 16.Qc3 Kb8 17.Nf2 d5 18.f4 Nc4 19.fxg5 ) 10.h5 Nb6 $2 {Deep HIARCS 15.3: +2.67/22} ( 10...c5 {Deep HIARCS 15.3: +1.38/20} 11.hxg6 fxg6 12.Nh3 cxd4 13.Bxd4 e5 14.Be3 d5 15.exd5 Nb6 16.Ne4 Nbxd5 17.Bc5 Qc7 18.Bxf8 Rxf8 19.Kb1 Qe7 20.Bd3 Qb4 21.Qxb4 Nxb4 22.Nhg5 h6 ) 11.hxg6 fxg6 12.Qh2 b4 13.Nce2 Kf7 $2 {Deep HIARCS 15.3: +3.80/22} ( 13...Qe8 {Deep HIARCS 15.3: +2.28/20} 14.e5 Qf7 15.exf6 Bxf6 16.Kb1 a5 17.g5 Bh8 18.Nf4 e5 19.Nxg6 Qxg6 20.Bd3 Rf5 21.Qg2 exd4 22.Rh6 dxe3 23.Rxg6+ hxg6 24.Bxf5 gxf5 25.Qh3 ) 14.Nf4 $6 {Deep HIARCS 15.3: +3.22/20} ( 14.Nh3 {Deep HIARCS 15.3: +3.80/22} 14...Rh8 15.Ng5+ Kg8 16.Nf4 Bc8 17.d5 Qe8 18.Nge6 Bxe6 19.Nxe6 Rb8 20.Nxg7 Kxg7 21.Qh6+ Kf7 22.g5 Ng8 23.Qh3 c5 24.f4 h5 25.f5 Kg7 26.fxg6 Qxg6 27.Bd3 ) 14...Rh8 $6 {Deep HIARCS 15.3: +3.64/22} ( 14...g5 {Deep HIARCS 15.3: +3.22/20} 15.Nh5 Rg8 16.Bxg5 Nxh5 17.Qxh5+ Kf8 18.Be3 Qe8 19.Qa5 d5 20.Bd3 Qa4 21.Qc5 Qc6 22.Qxb4 a5 23.Qc5 Qxc5 24.dxc5 Nc4 25.Bxc4 dxc4 26.Rxh7 ) 15.Ngh3 h6 $2 {Deep HIARCS 15.3: +5.96/19} ( 15...Bc8 {Deep HIARCS 15.3: +3.92/20} 16.Ng5+ Kg8 17.d5 Na4 18.Nfe6 Bxe6 19.Nxe6 Qe8 20.Rd4 Rb8 21.Nxg7 Kxg7 22.e5 dxe5 23.Qxe5 h6 24.g5 hxg5 25.Rxh8 Kxh8 26.Bxg5 Kg8 27.Qe6+ Kh7 28.Bxa6 Nh5 ) 16.g5 Nfd7 17.gxh6 $2 {Deep HIARCS 15.3: +3.10/21} ( 17.Nxg6 {Deep HIARCS 15.3: +6.30/19} 17...e5 18.Nxh8+ Qxh8 19.gxh6 Bxh6 20.f4 Bxe4 21.Bg2 Bxg2 22.Qxg2 Qg7 23.Ng5+ Bxg5 24.fxg5 d5 25.dxe5 Re8 26.e6+ Rxe6 27.Bd4 Ne5 28.Kb1 Re7 29.Bc5 Kg8 30.Bxe7 Qxe7 ) 17...Bxh6 18.Qg3 $6 {Deep HIARCS 15.3: +2.77/22} ( 18.d5 {Deep HIARCS 15.3: +3.34/20} 18...Qg8 19.Kb1 Na4 20.Bd4 Bxf4 21.Qxf4+ Ke8 22.Qd2 c5 23.dxc6 Bxc6 24.Bxh8 Qxh8 25.Qd4 Qxd4 26.Rxd4 Kf7 27.Bc4+ Kf6 28.Nf2 Ke5 29.Rhd1 Nac5 30.Bd5 Bxd5 31.exd5 Kf6 32.Rxb4 ) 18...Qg8 19.Ng5+ $1 Bxg5 20.Rxh8 Qxh8 21.Qxg5 Qf6 22.Qg3 a5 $2 {Deep HIARCS 15.3: +6.28/22} ( 22...Ke8 {Deep HIARCS 15.3: +2.70/22} 23.Kb1 Nf8 24.d5 Qf7 25.Bd4 Rc8 26.Bh3 c5 27.Bxc8 Bxc8 28.Be3 Nc4 29.Bc1 Ne5 30.b3 Qf6 31.Rf1 c4 32.Ng2 cxb3 33.axb3 Bd7 34.f4 ) 23.Bh3 $2 {Deep HIARCS 15.3: +3.07/21} ( 23.e5 {Deep HIARCS 15.3: +6.28/22} 23...dxe5 24.dxe5 Nxe5 25.Bd4 e6 26.Bxe5 Qxe5 27.Qxg6+ Kf8 28.Nxe6+ Ke7 29.Nxc7 Bxf3 30.Qh7+ Kf6 31.Qh6+ Ke7 32.Nxa8 Bxd1 33.Nxb6 Bh5 34.Qh7+ Bf7 35.Qh4+ Ke8 36.Kb1 Be6 37.Bd3 Kf8 38.a4 bxa3 39.bxa3 Kf7 40.a4 Qc3 41.Qe4 Qb4+ 42.Qxb4 axb4 43.a5 Kf6 ) 23...Nf8 $2 {Deep HIARCS 15.3: +6.81/22} ( 23...Rh8 {Deep HIARCS 15.3: +3.07/21} 24.d5 Ne5 25.Bd4 Bc8 26.Be6+ Ke8 27.Bxc8 Nxc8 28.Ne6 c5 29.Bxe5 Qxe5 30.Qxg6+ Kd7 31.f4 Qh5 32.Qg2 Nb6 33.Qf1 c4 34.Qf2 Rb8 35.Qe3 Qh8 36.e5 c3 37.bxc3 dxe5 38.fxe5 ) 24.d5 Nc4 25.Bd4 b3 26.Be6+ $2 {Deep HIARCS 15.3: +4.00/24} ( 26.axb3 {Deep HIARCS 15.3: +8.42/21} 26...Ne5 27.Ne6 c5 28.Nxc5 g5 29.Nxb7 Qf4+ 30.Qxf4+ gxf4 31.Bxe5 dxe5 32.Kd2 e6 33.Ra1 exd5 34.exd5 Nh7 35.Rxa5 Rxa5 36.Be6+ Kf6 37.Nxa5 Ng5 38.Bg4 ) 26...Ke8 27.axb3 Ne5 28.Rg1 a4 $6 {Deep HIARCS 15.3: +5.96/23} ( 28...Kd8 {Deep HIARCS 15.3: +4.06/25} 29.Bxe5 Qxe5 30.Nxg6 Qxg3 31.Rxg3 Nxg6 32.Rxg6 c6 33.Rg7 Rb8 34.Kd2 cxd5 35.exd5 Ba6 36.Rg8+ Kc7 37.Rxb8 Kxb8 38.c4 Bb7 39.Kc3 Kc7 40.b4 axb4+ 41.Kxb4 Kb6 42.Kc3 Kc5 43.b4+ Kb6 44.Kd3 Kc7 45.Kd4 Kb6 46.c5+ dxc5+ 47.bxc5+ Kc7 48.Ke5 Kd8 ) 29.Bxe5 dxe5 30.Nxg6 Nxe6 31.dxe6 axb3 32.Nxe5 Ra1+ 33.Kd2 Rxg1 34.Qxg1 Qxe6 35.Qg6+ $2 {Deep HIARCS 15.3: +1.04/28} ( 35.Qg7 {Deep HIARCS 15.3: +3.96/22} 35...Qd6+ 36.Ke1 e6 37.c4 c5 38.Qg6+ Ke7 39.Qh7+ Ke8 40.f4 Bc6 41.Qh8+ Ke7 42.Qg7+ Ke8 43.Qh7 Ba4 44.Qh8+ Ke7 45.Qh4+ Ke8 46.Qh5+ Ke7 47.Qg5+ Ke8 48.Qf6 Qd4 49.Qxe6+ Kd8 50.Qb6+ Kc8 51.Qa6+ Kd8 52.Qxa4 Qxe4+ 53.Kf2 Qxf4+ 54.Nf3 Qf6 55.Qa5+ Kd7 56.Qa7+ Kc8 57.Qxc5+ Kb7 ) 35...Qxg6 36.Nxg6 bxc2 37.Kxc2 Kf7 38.Ne5+ Ke6 $6 {Deep HIARCS 15.3: +1.31/24} ( 38...Kf6 {Deep HIARCS 15.3: +0.67/24} 39.Nd7+ Kg5 40.Nc5 Bc8 41.Kd2 Kf4 42.Ke2 Ke5 43.Nb3 Be6 44.Nc1 Kd4 45.Kd2 Bf7 46.Ne2+ Kc4 47.f4 Kb3 48.f5 c5 49.e5 Kxb2 50.Nc3 Kb3 51.e6 Be8 52.f6 exf6 53.e7 c4 54.Nd5 c3+ 55.Nxc3 ) 39.Nd3 $6 {Deep HIARCS 15.3: +0.54/26} ( 39.Nc4 {Deep HIARCS 15.3: +1.31/24} 39...Ba6 40.Kd3 c5 41.b3 Bb5 42.f4 Kf6 43.Ke3 Be8 44.Nb6 Bc6 45.Nd5+ Ke6 46.f5+ Kd6 47.Nb6 Bb5 48.Kf4 Be8 49.e5+ Kc6 50.Nc4 Kd5 51.Ne3+ Kd4 52.e6 Bb5 53.f6 exf6 54.e7 Bc6 55.Nc4 ) 39...Kd6 40.Kc3 c5 41.Kc4 Ba6+ 42.Kc3 Bb7 43.Kc4 $6 {Deep HIARCS 15.3: 0.00/38} ( 43.Kd2 {Deep HIARCS 15.3: +0.51/22} 43...Bc6 44.Nf2 e5 45.Ng4 Ke6 46.Ne3 Bd7 47.Nd1 Be8 48.Nc3 Kd6 49.Ke3 Bd7 50.f4 exf4+ 51.Kxf4 Be6 52.e5+ Kc6 53.Ne4 Kd5 54.Nf6+ Kc4 55.Ne8 Bh3 56.Nc7 Kb3 57.Kf3 Kxb2 58.e6 ) 43...Ba6+ 44.Kc3 Bb7 {White loses 0.2 pawn per move (4 mistakes, 5 inaccuracies), Black loses 0.3 pawn per move (5 mistakes, 5 inaccuracies).} 1/2-1/2


Analysing with PC engines highlights that White should have won but they were searching very deeply and way beyond Maia’s capability.

Ray
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  #18  
Alt 22.02.2024, 18:21
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 7/10

The Scotch, Goering Gambit was played and the MCGP2024 dominates most of the game and wins.
The Maia bot makes a surprising blunder!

[Event "Modern book"]
[Round "7"]
[White "MCGP2024"]
[Black "Maia1900 6ply"]
[Result "1-0"]
[ECO "C44"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Bc4 $6 {Deep HIARCS 15.3: -0.37/24} ( 5.Nxc3 {Deep HIARCS 15.3: 0.00/22} 5...d6 6.Bc4 Nf6 7.Qb3 Qd7 8.O-O Na5 9.Qb5 Nxc4 10.Qxc4 Be7 11.e5 dxe5 12.Rd1 Qc6 13.Qxc6+ bxc6 14.Nxe5 Bb7 15.Re1 O-O 16.Nxc6 Bd6 17.Ne7+ Kh8 18.Bg5 Rae8 19.Nf5 Bc5 20.Bxf6 Rxe1+ 21.Rxe1 gxf6 22.Nh6 Kg7 23.Nf5+ Kh8 ) 5...cxb2 6.Bxb2 Bb4+ 7.Nc3 Nf6 8.O-O {Out of book} 8...O-O 9.Qb3 Bxc3 10.Qxc3 d6 11.Bd5 Be6 12.Bxc6 bxc6 13.Qxc6 Rb8 14.Bxf6 Qxf6 15.Qxc7 Bg4 16.Nd2 $1 Rb2 17.Nb3 Be2 18.Rfb1 Bd3 $6 {Deep HIARCS 15.3: +0.64/26} ( 18...Rxb1+ {Deep HIARCS 15.3: 0.00/26} 19.Rxb1 Bd3 20.Re1 Qb2 21.Qxa7 Bxe4 22.Qd4 Qxd4 23.Nxd4 Bd3 24.f3 Rc8 25.Rd1 Rc3 26.a4 Kf8 27.Kf2 Ra3 28.Nb5 Bxb5 29.axb5 Rb3 30.Rxd6 Rxb5 31.Rd4 Ke7 32.Re4+ Kf6 33.Rf4+ Kg6 34.Rg4+ Kf6 35.Rf4+ ) 19.Rxb2 Qxb2 20.f3 f5 21.exf5 Bxf5 $1 22.Qxd6 h6 23.Qd5+ Kh8 24.Qd4 Qe2 $6 {Deep HIARCS 15.3: +0.99/26} ( 24...Qa3 {Deep HIARCS 15.3: +0.60/25} 25.Qc5 Qxc5+ 26.Nxc5 Rb8 27.a3 Bb1 28.a4 Rb4 29.Kf2 Kg8 30.Ke3 Kf7 31.Kd2 g5 32.h3 Rb8 33.Kc3 Ke7 34.Kd4 Kd6 35.Ne4+ Ke6 36.Nc3 Rd8+ 37.Ke3 ) 25.Qxa7 Rc8 26.Qf2 Qa6 27.Nd4 Bg6 28.Qb2 Kh7 $6 {Deep HIARCS 15.3: +1.20/21} ( 28...Rd8 {Deep HIARCS 15.3: +0.71/23} 29.Rd1 Ra8 30.Rd2 Qa7 31.Kh1 Bf7 32.Nf5 Be6 33.Qe5 Qf7 34.Ng3 Bxa2 35.h3 Re8 36.Qa1 Bd5 37.Kh2 Bb3 38.Qd4 Qc7 39.Qb4 Rb8 40.Qd6 Qxd6 41.Rxd6 Bc4 42.Ne4 Kh7 43.Nc5 Ra8 ) 29.a4 $6 {Deep HIARCS 15.3: +0.67/28} ( 29.h3 {Deep HIARCS 15.3: +1.20/21} 29...Qf6 30.Rd1 Re8 31.Kh1 Ra8 32.Rd2 Bf7 33.Qc2+ Bg6 34.Qc1 Qf4 35.Ne2 Qe5 36.Qb2 Qxb2 37.Rxb2 Bf7 38.Nc1 Kg6 39.Kh2 Kf5 40.Kg3 Ra3 41.Nb3 Ke5 42.h4 ) 29...Rd8 30.Nb5 Qb6+ 31.Kh1 Qe3 32.Qc3 Qf2 33.Rg1 Rd2 34.Qe5 Re2 35.Qg3 Qc5 36.Qc7 Qb4 37.Qd6 Qxa4 $4 {Deep HIARCS 15.3: +4.49/29} ( 37...Qxd6 {Deep HIARCS 15.3: +0.58/24} 38.Nxd6 Rd2 39.Nb7 Rb2 40.Nc5 Rc2 41.Ne6 Bf7 42.Nf8+ Kg8 43.Nd7 Be8 44.Nb6 Rb2 45.Nc4 Rc2 46.Nd6 Bxa4 47.h3 Bc6 48.Re1 Kh7 49.Kg1 Kg6 50.Re7 Ba4 51.Kh2 Kf6 52.Rb7 Kg6 53.Rb6 Bc6 54.Ne4 ) 38.Nc3 Qc2 39.Nxe2 Qxe2 40.Rd1 Bc2 41.Ra1 Bg6 42.Qd4 $1 Kg8 43.h4 Qe8 $6 {Deep HIARCS 15.3: +5.50/23} ( 43...Qb5 {Deep HIARCS 15.3: +4.28/23} 44.Ra8+ Kh7 45.Kh2 Qf5 46.Qc4 Qf7 47.Qxf7 Bxf7 48.Ra7 Bd5 49.Kg3 Kg8 50.Rc7 Kh7 51.Kf4 Kg8 52.Ke5 Ba8 53.Kf5 Kh7 54.Kf4 Bd5 55.Ra7 Kg8 ) 44.Ra7 Qf8 $4 {Deep HIARCS 15.3: +20.73/30} ( 44...Bf7 {Deep HIARCS 15.3: +4.76/24} 45.Qe4 Qxe4 46.fxe4 Bc4 47.Kh2 Bd3 48.e5 Bf5 49.Kg3 g5 50.Rc7 Kf8 51.Rc6 Kg7 52.hxg5 hxg5 53.Kf3 Bd7 54.Rc7 Kg6 55.Rxd7 Kf5 56.e6 Kg6 57.Kg4 ) 45.Qd5+ Kh7 46.h5 Be8 47.Qe4+ Kg8 48.Ra8 Kf7 49.Qd5+ Ke7 50.Ra7+ Kf6 51.Ra6+ Qd6 52.Rxd6+ Ke7 53.Re6+ Kf8 54.Qd8 g6 55.Rxe8+ Kf7 56.Qe7# {White loses 0.03 pawn per move (2 inaccuracies), Black loses 0.21 pawn per move (2 blunders, 4 inaccuracies).} 1-0


In the following position from the game White had just moved 37. Qd6:

Here Maia played 37…Qxa4?? Was it throwing the towel in? The MCGP2024 followed correctly with 38. Nc3 and Black’s Rook is lost.
Ray
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  #19  
Alt 22.02.2024, 18:39
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 8/10

The Sicilian, Closed opening was played and the MCGP2024 wins but not without almost giving the game away!

[Event "Modern book"]
[Round "8"]
[White "Maia1900 6ply"]
[Black "MCGP2024"]
[Result "0-1"]
[ECO "B24"]

1.e4 c5 2.Nc3 Nc6 3.g3 $6 ( {Theory prefers} 3.Nf3 $1 ) ( {Or} 3.Nge2 $1 ) ( {Or} 3.Bb5 $1 ) 3...d6 $6 ( {Theory prefers} 3...g6 $1 ) 4.Bg2 Nf6 5.d3 e5 {Out of book} 6.Nge2 Be6 $146 ( {Theoretical move is} 6...Be7 ) 7.O-O Be7 8.f4 O-O 9.f5 Bd7 10.h3 $1 Nd4 11.g4 h6 12.Ng3 Rc8 13.g5 $6 {Deep HIARCS 15.3: -0.24/23} ( 13.Nd5 {Deep HIARCS 15.3: +0.39/22} 13...Nh7 14.c3 Nc6 15.Nxe7+ Qxe7 16.Be3 Qh4 17.Bf2 Qd8 18.Nh5 Qg5 19.Qe1 Qd8 20.Be3 Kh8 21.Qd2 Rg8 22.a3 a6 23.b4 cxb4 24.axb4 Ng5 25.Qf2 ) 13...hxg5 14.Bxg5 Bc6 $6 {Deep HIARCS 15.3: -0.10/25} ( 14...c4 {Deep HIARCS 15.3: -0.41/21} 15.Kh1 cxd3 16.Qxd3 a6 17.Be3 b5 18.Bxd4 b4 19.Nce2 Bb5 20.Qd2 exd4 21.Rac1 Qc7 22.Rfe1 d5 23.e5 Qxe5 24.Nxd4 Ne4 25.Nxe4 ) 15.Bxf6 Bxf6 16.Nh5 $6 {Deep HIARCS 15.3: -0.82/23} ( 16.Nd5 {Deep HIARCS 15.3: -0.13/24} 16...Bh4 17.f6 Bxd5 18.fxg7 Kxg7 19.Nf5+ Nxf5 20.Rxf5 Bf2+ 21.Kh1 Qh4 22.exd5 Be3 23.Qe2 Bg5 24.Qe4 Rh8 25.Qxh4 Bxh4 26.Be4 Rc7 27.Rg1+ Kf8 28.Rf3 b5 29.b3 Rg8 30.Rxg8+ Kxg8 31.Rf1 Kg7 32.Rg1+ Kf6 33.Kg2 Rc8 34.Kf3 Bg5 35.Ke2 Bf4 ) 16...Bg5 17.Qg4 $2 {Deep HIARCS 15.3: -1.87/24} ( 17.f6 {Deep HIARCS 15.3: -0.49/21} 17...g6 18.Nd5 Kh7 19.c3 Ne6 20.h4 Bxd5 21.hxg5 Bc6 22.Ng7 Nxg7 23.fxg7 Kxg7 24.Rf6 Bd7 25.Qf3 Be6 26.Qf2 Qd7 27.Rf1 Qa4 28.b3 Qd7 29.Rf3 Rh8 ) 17...Nxc2 $2 {Deep HIARCS 15.3: +1.07/26} ( 17...Be3+ {Deep HIARCS 15.3: -1.87/24} 18.Kh1 Qg5 19.Bf3 Qxg4 20.Bxg4 Nxc2 21.Rab1 Rcd8 22.Bd1 Nd4 23.Ng3 a6 24.Kg2 Bf4 25.f6 Bxg3 26.Kxg3 gxf6 27.h4 f5 28.exf5 Kg7 29.Bg4 Rg8 30.Ne4 Bxe4 ) 18.f6 Be3+ 19.Kh1 g6 20.Rac1 $2 {Deep HIARCS 15.3: -1.18/22} ( 20.Qe2 {Deep HIARCS 15.3: +0.85/24} 20...Nxa1 21.Qxe3 Kh7 22.Rxa1 Rh8 23.Qg5 Kg8 24.Ng7 Rh7 25.Nf5 Kh8 26.Ne7 Rb8 27.Kh2 Bd7 28.Ncd5 Be6 29.Qe3 Qa5 30.a3 Bd7 31.Rc1 Qa4 32.Kg3 Rh5 33.h4 ) 20...Bxc1 $2 {Deep HIARCS 15.3: 0.00/27} ( 20...Nd4 {Deep HIARCS 15.3: -1.18/22} 21.Nd5 Bxd5 22.exd5 Rc7 23.Be4 Qc8 24.Qh4 Bxc1 25.Rxc1 Nf5 26.Qg5 Kh7 27.Rg1 Nh6 28.Kh2 Rg8 29.Ng7 Rxg7 30.fxg7 Qe8 31.Qf6 Kg8 32.Qxd6 Qe7 33.Qxe7 Rxe7 34.h4 Rd7 35.Kh3 f5 36.Bf3 Kxg7 37.h5 Rd6 38.hxg6 Rxg6 39.Rxg6+ Kxg6 40.d6 Nf7 41.Bxb7 Nxd6 42.Bd5 Ne8 43.Kg3 Nc7 44.Bb3 Kg5 45.Kf3 Kh4 ) 21.Rxc1 Nd4 22.Nd5 $2 {Deep HIARCS 15.3: -1.02/27} ( 22.Qh4 {Deep HIARCS 15.3: 0.00/27} 22...Re8 23.Ng3 Re6 24.Rf1 Rc7 25.Nd5 Rd7 26.Qh6 Qf8 27.Qh4 Qd8 ) 22...Bxd5 23.exd5 Qb6 $4 {Deep HIARCS 15.3: +11.03/24} ( 23...Rc7 {Deep HIARCS 15.3: -0.67/26} 24.Be4 Qc8 25.Qh4 Nf5 26.Qg5 Kh7 27.Rg1 Nh6 28.Kh2 Rg8 29.Ng7 Rxg7 30.fxg7 Qe8 31.Qf6 Kg8 32.Qxd6 Qe7 33.Qxe7 Rxe7 34.h4 Rd7 35.Kh3 Kxg7 36.h5 Rd6 37.hxg6 f5 38.Bf3 Rxg6 39.Rxg6+ Kxg6 40.d6 Kf6 41.Bxb7 Ke6 42.Kh4 f4 43.Kh5 Nf7 44.d7 Kxd7 45.Kg4 ) 24.Be4 $1 Qxb2 25.Rg1 $4 {Deep HIARCS 15.3: -5.71/28} ( 25.Qg5 {Deep HIARCS 15.3: +7.53/23} 25...Nf3 26.Bxf3 Kh7 27.Rg1 Qf2 28.Be4 Rg8 29.Rg2 Qf1+ 30.Kh2 Rcf8 31.Qh4 Rh8 32.Ng3+ Kg8 33.Qxh8+ Kxh8 34.Nxf1 Kh7 35.Nd2 b5 36.Bf3 Rh8 37.Ne4 Rd8 38.Rg4 Kg8 39.h4 Kf8 40.h5 gxh5 41.Rg7 Rd7 42.Bxh5 c4 43.dxc4 bxc4 44.Ng5 ) 25...Qe2 26.Qg5 Nf3 27.Bxf3 Qxf3+ 28.Rg2 Kh7 $1 29.Ng7 Rh8 30.Kg1 Qxd3 31.Rg4 Qb1+ 32.Kh2 Qxa2+ 33.Rg2 Qb1 34.Rf2 Qd3 $1 35.Nf5 Kg8 36.Qg4 Rd8 37.Rf3 Qd2+ 38.Kh1 Rh5 39.Ne7+ Kf8 $1 40.Rg3 Rh8 $1 41.Nxg6+ fxg6 42.Qxg6 Qxd5+ 43.Kh2 Qd2+ 44.Kg1 Qe1+ $1 45.Kh2 Qf2+ 46.Kh1 Rd7 47.Qg4 Ke8 48.Rf3 Qe1+ 49.Kh2 Qd2+ 50.Kg3 Qc1 51.f7+ Kf8 52.Rf6 Qg1+ 53.Kf3 Qxg4+ 54.Kxg4 Rxf7 55.Rxd6 Rg8+ 56.Kh5 Rh7+ 57.Rh6 Rxh6+ 58.Kxh6 c4 59.h4 c3 60.Kh7 c2 61.Kh6 c1=Q+ 62.Kh7 Rg7+ 63.Kh8 Qh6# {White loses 0.29 pawn per move (1 blunder, 3 mistakes, 2 inaccuracies), Black loses 0.15 pawn per move (1 blunder, 2 mistakes, 1 inaccuracy).} 0-1


The position after Maia moved 23. exd5:

White is a Rook and Pawn down but does have a Bishop. Here the MCGP2024 played 23…Qb6?? Black really needs to attack the opposing Queen with 23…Rc7 followed by Qd7 instead has moved the Queen to attack a Pawn away from all the dangerous action! However, a few moves later and the Maia blunders and Black plays well to its winning conclusion!

Ray
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  #20  
Alt 22.02.2024, 18:51
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Re: Chessnut Evo Maia v ChessGeniusPro 2024

Game 9/10

The King’s Indian was played and Maia advances three Pawns into the enemy camp!

[Event "Modern book"]
[Round "9"]
[White "MCGP2024"]
[Black "Maia1900 6ply"]
[Result "0-1"]
[ECO "E90"]

1.Nf3 g6 2.d4 Bg7 3.c4 d6 4.Nc3 Nf6 5.e4 O-O 6.h3 e5 7.d5 a5 8.Be3 Na6 9.a3 {Out of book} 9...Nd7 $6 {Deep HIARCS 15.3: +0.40/21} ( 9...Nc5 {Deep HIARCS 15.3: +0.05/23} 10.Nd2 Bd7 11.Be2 a4 12.g4 h6 13.h4 Nh7 14.g5 hxg5 15.h5 gxh5 16.Bxc5 dxc5 17.Rxh5 Qf6 18.Bg4 Bxg4 19.Qxg4 Qf4 20.Qg3 Bf6 21.O-O-O Qxg3 22.fxg3 g4 ) 10.Rb1 $6 {Deep HIARCS 15.3: +0.07/23} ( 10.Be2 {Deep HIARCS 15.3: +0.40/21} 10...f5 11.b4 Nf6 12.O-O Nxe4 13.Nxe4 fxe4 14.Nd2 Qh4 15.c5 Bh6 16.Qb3 Bf5 17.Bxh6 Qxh6 18.Nc4 g5 19.cxd6 cxd6 20.Nxa5 Rf7 21.Rfd1 Qg6 22.Qe3 g4 23.hxg4 ) 10...f5 11.exf5 $6 {Deep HIARCS 15.3: -0.44/23} ( 11.Bd3 {Deep HIARCS 15.3: +0.18/22} 11...Nac5 12.Bc2 Nxe4 13.Bxe4 fxe4 14.Nd2 Nf6 15.O-O Nh5 16.Ndxe4 Nf4 17.Qd2 Bd7 18.f3 Qh4 19.c5 dxc5 20.Nxc5 Rf7 21.N3e4 Qh5 22.Bxf4 exf4 23.d6 Qe5 ) 11...gxf5 12.Bc1 Nac5 $6 {Deep HIARCS 15.3: -0.53/21} ( 12...e4 {Deep HIARCS 15.3: -0.87/22} 13.Nd4 Ne5 14.Be2 Nc5 15.O-O Qh4 16.f4 Ned3 17.Be3 Bxd4 18.Bxd4 Nxf4 19.Kh2 Qg5 20.Rg1 Nxe2 21.Qxe2 Nb3 22.Bf2 Bd7 23.h4 Qh6 24.Rge1 Rae8 25.Kg1 e3 26.Bxe3 Qxh4 ) 13.Bg5 $2 {Deep HIARCS 15.3: -1.98/22} ( 13.b4 {Deep HIARCS 15.3: -0.53/21} 13...e4 14.Nd4 Nd3+ 15.Bxd3 Bxd4 16.Ne2 Bb6 17.Bc2 Ne5 18.O-O axb4 19.Rxb4 Qh4 20.Nf4 Kh8 21.Rb3 Rg8 22.Qe2 Bd7 23.Kh1 Be8 24.g3 Qh6 25.Bb2 Bf7 26.Rb4 Rg7 ) 13...Qe8 14.Nb5 Na6 $6 {Deep HIARCS 15.3: -0.93/20} ( 14...e4 {Deep HIARCS 15.3: -1.78/21} 15.Nxc7 Qg6 16.Be7 exf3 17.Bxf8 Nxf8 18.Qxf3 Rb8 19.Be2 f4 20.O-O Bf5 21.Rbd1 Be4 22.Qg4 Bxb2 23.Nb5 Qxg4 24.hxg4 Be5 25.Nd4 Re8 26.Nb5 Nfd7 27.Nc7 Rb8 28.Nb5 Bg6 29.Nc7 Rc8 30.Nb5 Re8 31.f3 ) 15.Qd2 $2 {Deep HIARCS 15.3: -2.97/21} ( 15.Nd2 {Deep HIARCS 15.3: -0.93/20} 15...f4 16.Ne4 h6 17.Bh4 Qg6 18.f3 Nf6 19.Qc2 Nxe4 20.fxe4 c6 21.Nc3 Bd7 22.Bf2 Kh7 23.Rd1 Nc7 24.b4 axb4 25.axb4 cxd5 26.cxd5 ) 15...f4 16.Rd1 Ndc5 17.Qxa5 $6 {Deep HIARCS 15.3: -4.65/23} ( 17.Be2 {Deep HIARCS 15.3: -3.42/21} 17...e4 18.O-O exf3 19.Bxf3 Qe5 20.h4 Qxb2 21.Bxf4 Bf5 22.Qxb2 Bxb2 23.Bh6 Rfe8 24.Be3 Bd3 25.Nxc7 Nxc7 26.Bxc5 Bxf1 27.Bxd6 Bxc4 28.Bxc7 Be2 29.Bxe2 Rxe2 30.d6 Rc2 31.Bb6 Bf6 32.f3 Rb2 33.Bd4 Bxd4+ 34.Rxd4 Rf8 ) 17...e4 18.Nfd4 e3 19.f3 Qg6 20.h4 h6 21.Nxc7 $2 {Deep HIARCS 15.3: -10.13/21} ( 21.Qc3 {Deep HIARCS 15.3: -4.13/19} 21...c6 22.dxc6 bxc6 23.Qc2 Qxc2 24.Nxc2 hxg5 25.Nxd6 Bxb2 26.Be2 Bc3+ 27.Kf1 Be6 28.hxg5 Rad8 29.Rh6 Kg7 30.Nb4 Nxb4 31.axb4 Bxb4 32.Ne4 Rxd1+ 33.Bxd1 Re8 34.Be2 Nxe4 ) 21...Nxc7 22.Qxc7 hxg5 23.h5 Qf6 24.Qb6 g4 25.Be2 gxf3 26.Bxf3 Ra6 27.Qb4 Qg5 28.Kf1 Ra4 29.Qc3 Qg3 $1 30.Qe1 Rxc4 31.Nb5 Rc2 32.Kg1 e2 $1 33.Qxg3 fxg3 34.Bxe2 Rxe2 35.b4 {White loses 0.54 pawn per move (3 mistakes, 3 inaccuracies), Black loses 0.07 pawn per move (3 inaccuracies).} 0-1


After the opening stage things started to turn in favour of Black. Here is the final position when MCGP2024 resigned:

It was just a matter of time!

The pawn march started at move 17 and it’s amazing that the MCGP2024 allowed it to happen.
Ray
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