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  #1  
Alt 13.11.2023, 15:23
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Millennium CGPro2024 v Older CGPro

Here is the start of my ten game match between the new CGPro2024 and the original CGP. Both machines set to the Classic(London) book and I’m guessing this is the same book on each machine. Have e-mailed Millennium to confirm if this is the case and waiting for their reply.

The CGPro2024 is set to its default ‘Normal’ play style, the older CGP does not have settings for style of play. I’m using a time control of 40 moves / 2 hours then 20 moves/ hour so it will take a little time to complete.

I expect the final result will be close if not a draw, but there may be some interesting games along the way considering they are slightly different programs. The CGPro2024 has extra endgame knowledge but this may make it slower in some positions, so lets find out.

Game 1/10

[Event "CGP2024 V CGP 40m/2h 20m/1h Classic Book"]
[Round "1"]
[White "CGP"]
[Black "CGP2024"]
[Result "1/2-1/2"]
[ECO "E59"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O Nc6 8.a3 Bxc3 9.bxc3 dxc4 10.Bxc4 Qc7 11.Bd3 e5 12.Qc2 Re8 13.Nxe5 Nxe5 14.dxe5 Qxe5 15.f3 Be6 16.e4 c4 17.Be2 Qc5+ 18.Kh1 Rad8 19.Rb1 b5 20.a4 a6 21.axb5 axb5 22.Qb2 Bd7 23.Rd1 Bc6 24.Rd4 Qe5 25.Be3 Ra8 26.Rbd1 Qc7 27.Qd2 Re6 28.Rd8+ Rxd8 29.Qxd8+ Qxd8 30.Rxd8+ Re8 31.Rxe8+ Nxe8 32.g4 f6 33.Kg2 Kf7 34.h4 h6 35.Kf2 Nc7 36.Kg3 Ne6 37.h5 Ng5 38.Bd2 Ke7 39.Bc1 Bd7 40.Ba3+ Kd8 41.Bf8 Ne6 42.Bd6 Nc7 43.f4 Bc6 44.e5 Ne6 45.Kf2 Ke8 46.Bf3 Bd7 47.f5 Ng5 48.e6 Nxf3 49.Kxf3 Bc6+ 50.Ke3 Bg2 51.Ke2 Be4 52.Ba3 Bd3+ 53.Ke3 Bc2 54.Bd6 Bd1 55.Kf4 Bc2 56.Ba3 1/2-1/2


The game is pretty much balanced until move 44 when the CGP2024 playing black makes a bad move. This is easy for me to say after having SF analyse the game while a drank my coffee 😊. It’s quite an interesting position though and worth looking at to appreciate that neither of the CGPros would be able to calculate far enough ahead in the time available to make the best move. Here is the position after CGP makes the move 44.e5:



White has a slight advantage and his pawn on e5 is causing Black some concern. For example, he would not want to move 44…PxP? White would take back with his Bishop and Black’s Queen-side Pawns are in trouble.

Instead, the CGP2024 moved 44… Ne6 maybe in an attempt to stop the e5 pawn advancing and prevent white’s bishop moving to f8. The problem with this move (after seeing the PC engine analysis and thinking about the position) is that this knight will eventually be attacked by White’s f pawn and will have to move away opening up a route for White’s Bishop to get to the f8 square. A possible continuation is: 45.exf6 gxf6 46.Bf3 Be8 47.f5 Kd7 48.Bb4

Now we can see Black has to move the knight or lose it, thus opening up the diagonal for White’s Bishop on b4 and Black will eventually lose his Pawn on h6. That’s 12 ply until the capture and I noticed that neither machine was able to fully explore to this depth in the time available.

Alas, White also made a bad move a blunder in fact. After Black had moved 48…Nxf3 we have this position:

The CGP moved 49.KxN which results in a likely draw, but no chance of these machines seeing that. I think we are able to look at the position and judge it’s a draw though. That being said, after move 56 the CGP2024 offered a draw so I accepted on behalf of the CGP!

So I think all considered this was good game.
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  #2  
Alt 14.11.2023, 10:18
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Re: Millennium CGPro2024 v Older CGPro

Game 2/10


[Event "CGP2024 V CGP 40m/2h 20m/1h Classic Book"]
[Round "2"]
[White "CGP2024"]
[Black "CGPRO"]
[Result "0-1"]
[ECO "B19"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5 Bh7 9.Bd3 Bxd3 10.Qxd3 Qc7 11.Bd2 e6 12.Qe2 Ngf6 13.O-O-O c5 14.c4 O-O-O 15.Ne5 Nb6 16.Bc3 Kb8 17.b3 cxd4 18.Bxd4 Bd6 19.Kb1 Rhf8 20.Qe3 Rc8 21.Ne2 Bc5 22.Bxc5 Qxc5 23.Qg3 Ka8 24.Nc3 a6 25.Ka1 Qc7 26.f4 Rg8 27.Kb2 Kb8 28.Rd3 Ka8 29.Rd2 Kb8 30.Rdd1 Ka8 31.Rd3 Kb8 32.Ka1 Nbd7 33.Rd2 Nxe5 34.fxe5 g6 35.Qf4 Nxh5 36.Qe3 Ng7 37.Qf4 g5 38.Qe4 Nf5 39.Rd3 Rgd8 40.g4 Rxd3 41.Qxd3 Rd8 42.Qh3 Nd4 43.Qg3 Nc6 44.Re1 f5 45.gxf5 exf5 46.Nd5 Qg7 47.Nf6 f4 48.Qc3 Ka7 49.Qb2 Rd4 50.Qf2 Kb8 51.Nd5 h5 52.Nf6 h4 53.Qe2 Rd8 54.Rg1 h3 55.Kb2 Qg6 56.Nd5 Re8 57.Nxf4 Qf5 58.Nd5 Qxe5+ 59.Qxe5+ Nxe5 60.Rh1 g4 61.Nf4 Rh8 62.Kc2 h2 63.Ne2 Rh3 64.Nf4 Rf3 65.Rxh2 Rxf4 66.Rh8+ Kc7 67.Rg8 Rf2+ 68.Kb1 Kd6 69.Rg7 Ke6 70.a3 Kf5 71.c5 Kf4 72.c6 bxc6 73.Rg8 0-1


We have the first win by the older CGPro. The game was evenly matched until around the half way point when the CGPro started to gain an advantage and then a much larger one before the inevitable conclusion.

After White moved 36.Qe3 we have this position:

This is the start of Black’s dominance in the game. From here Black moved 36…Ng7 with the possibility of then moving the knight to f5 for a strong attacking position.

Later on after Black’s move 46…Qg7 we have this position


Black is in a very good position here pinning the e5 pawn and threatening Re8 which will win the pawn. The CGPro2024 seeing this attempted to prevent black moving Re8 with 47.Nf6 however things are grim for White with Black’s advancing King-side pawns, and pressure on the e5 Pawn. It was just a matter of time before Black would be in a position to queen and realizing this the CGPro2024 gracefully resigned.

A good game for the older Pro, not ready to be delegated to the storage cupboard just yet!
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  #3  
Alt 15.11.2023, 10:11
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Re: Millennium CGPro2024 v Older CGPro

Game 3/10

[Event "CGP2024 V CGP 40m/2h 20m/1h Classic Book"]
[Round "3"]
[White "CGPRO"]
[Black "CGP2024"]
[Result "0-1"]
[ECO "C24"]

1.e4 e5 2.Bc4 Nf6 3.d3 c6 4.Nf3 d5 5.Bb3 Bd6 6.Nc3 dxe4 7.dxe4 Na6 8.Be3 Qe7 9.Nd2 Bc5 10.Qe2 Bxe3 11.Qxe3 Be6 12.Bxe6 Qxe6 13.O-O O-O 14.Nf3 Ng4 15.Qe2 h6 16.Rad1 Rfd8 17.a3 Nf6 18.Qe3 b6 19.Qe2 Rxd1 20.Rxd1 Nc5 21.Nh4 Kh7 22.f3 g6 23.Qd2 Nb7 24.Qe2 Nh5 25.g3 Rd8 26.Rxd8 Nxd8 27.Qd2 Qe7 28.Ne2 Ne6 29.Kg2 Kg7 30.b4 c5 31.c3 Nf6 32.Qd3 Qb7 33.b5 Qc7 34.Qd1 c4 35.Qa4 Ne8 36.Qb4 Qc5 37.Qa4 Qe3 38.Qxc4 Nd6 39.Qa2 Nxb5 40.a4 Nxc3 41.Nxc3 Qxc3 42.Qd5 Nc5 43.Kh3 Nd3 44.Qa2 Qb2 45.Qxb2 Nxb2 46.a5 b5 47.Ng2 Nc4 48.Ne1 Nxa5 49.f4 Nc6 50.Nd3 a5 51.fxe5 a4 52.e6 fxe6 53.g4 a3 54.Nc1 b4 55.Nb3 a2 56.Kg2 Na5 57.Nxa5 a1=Q 58.Nb3 Qb2+ 59.Kf3 Qxb3+ 60.Kf2 Qd3 61.h3 b3 62.g5 b2 63.gxh6+ Kxh6 64.h4 b1=Q 65.Kg2 Qb2+ 66.Kg1 Qdb1# 0-1


Revenge is sweet, the CGP2024 levels the score bringing the current points to 1.5 each. This could be the pattern until the end of the match, but even if that is the case I think the games so far are still interesting.

The Bishop’s Opening was played and in the following position the CGP2024 had just played 32…Qb7

Better would have been 32...Qe8 with the possibility of moving to a4 giving White some problems with the enemy queen in the camp! However, it is a case that neither of the CG Pro machines fully understood the position. White replied 33.b5? But this weakens white’s defence. Play could have continued with 33…c4 34.Qxc4 Qd7 attacking the b5 pawn and control of the d file. Instead, black played 33…Qc7 and white replied 34.Qd1 but he really needed to move 34.c4 to block black’s pawn. So a few inaccuracies on both sides but White’s position is weak enough that Black prevailed and his moves from move 36 onwards were good.

I played through to the checkmate, the older CGPro does not offer resignation. Also, I wanted to hear the applause 😊
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  #4  
Alt 15.11.2023, 16:36
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Re: Millennium CGPro2024 v Older CGPro

Game 4/10
[Event "CGP2024 V CGP 40m/2h 20m/1h Classic Book"]
[Round "4"]
[White "CGP2024"]
[Black "CGPRO"]
[Result "1-0"]
[ECO "C28"]

1.e4 e5 2.Nc3 Nc6 3.Bc4 Nf6 4.d3 Na5 5.Nge2 Nxc4 6.dxc4 Bc5 7.O-O d6 8.Bg5 h6 9.Bxf6 Qxf6 10.Nd5 Qd8 11.b4 Bb6 12.a4 c6 13.Nxb6 axb6 14.Qd3 Bg4 15.f3 Be6 16.Rfd1 Ke7 17.Ng3 Qc7 18.f4 f6 19.Nf5+ Bxf5 20.exf5 Rhd8 21.c3 Kf8 22.Qe3 Kg8 23.Rd3 Kh8 24.h3 c5 25.b5 Qc8 26.Qe4 Qd7 27.fxe5 fxe5 28.f6 gxf6 29.Qh4 Kg7 30.Rg3+ Kh7 31.Rf1 Rf8 32.Qh5 Kh8 33.Rg6 Qg7 34.Rf3 f5 35.Rxg7 Rf6 36.Rfg3 d5 37.R7g6 Rf7 38.Rxh6+ Rh7 39.Rxh7# 1-0


The shortest game so far and a good win for the CGP2024.

The Vienna opening was played and the game was very balanced up until this position where White had just moved 26.Qe4:

This position is equal but careful play is required. Here the CGP played 26…Qd7? The problem here is that the pawn on d6 is now pinned by Whites Rook so when White played 27. PxP. Black was unable to recapture with the d6 pawn, forcing recapture with the pawn on f6. This weakened his King-side safety allowing White to advance the pawn on f5 and move the Queen and Rook over to the King-side for an onslaught, which is exactly what happened and mate was announce soon after!

I really thought this was going to be a draw but the CGP made a very bad choice at move 26 and lost as a result.

Current score is 2 ½ to 1 ½ to the CGP2024
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  #5  
Alt 15.11.2023, 17:24
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AW: Re: Millennium CGPro2024 v Older CGPro

Hi Ray
It would be nice to state END OF BOOK in the game notations.
Kind regards
Kurt
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  #6  
Alt 16.11.2023, 08:44
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Re: AW: Re: Millennium CGPro2024 v Older CGPro

 Zitat von applechess Beitrag anzeigen
Hi Ray
It would be nice to state END OF BOOK in the game notations.
Kind regards
Kurt
Yes, that is something I used to do but for some reason forgot this time. Funnily, I have made a note in the current game because I thought it strange that the CGP2024 stayed in book slightly longer despite both machines set to Classic book and allegedly both machines have identical books. I'll have to perform some tests after the game.

Kind Regards
Ray
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  #7  
Alt 17.11.2023, 11:58
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Re: Millennium CGPro2024 v Older CGPro

Game 5/10
[Event "CGP2024 V CGP 40m/2h 20m/1h Classic Book"]
[Round "5"]
[White "CGP"]
[Black "CGP2024"]
[Result "1/2-1/2"]
[ECO "A29"]

1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.g3 Bc5 5.Bg2 a6 6.O-O d6 7.d3 O-O 8.Bg5 h6 9.Bxf6 Qxf6 10.Ne4 Qg6 11.Nxc5 dxc5 12.Nd2 Rd8 13.Ne4 b6 14.Nc3 Ra7 15.Nd5 Kf8 16.Qd2 Nd4 17.e3 Nc6 18.f4 Bf5 19.e4 Bg4 20.Rf2 Qh5 21.Raf1 Kg8 22.fxe5 Be6 23.b4 Qxe5 24.bxc5 bxc5 25.Rb1 Qd4 26.Rb3 Ne5 27.Qb2 c6 28.Qxd4 cxd4 29.Nf4 Bg4 30.Bf1 a5 31.Rb6 a4 32.a3 Raa8 33.Rfb2 g5 34.Ng2 f5 35.exf5 Bxf5 36.Ne1 Rf8 37.R6b4 c5 38.Rb5 Rae8 39.Rb1 Nxc4 40.dxc4 Bxb1 41.Rxb1 Re3 42.Bd3 Rfe8 43.Kf2 Kg7 44.Kf1 g4 45.Rd1 Rb8 46.Kg1 Rb3 47.Bf1 Rbc3 48.Nd3 Rxc4 49.Nb2 Rc2 50.Nxa4 Re5 51.Nb6 h5 52.a4 Re3 53.a5 Ra3 54.a6 Rca2 55.Rb1 d3 56.a7 Rxa7 57.Bxd3 Rd2 58.Bf1 Rb7 59.Nc4 Rxb1 60.Nxd2 Rd1 61.Nc4 Ra1 62.Nd2 Rd1 63.Nc4 Kf6 64.Kf2 Ra1 65.Nd2 Ke5 66.Ke2 Rc1 67.Kd3 Rd1 1/2-1/2


As expected, the match so far is close with the CGP2024 nudging ahead with an extra point but we are only half way through the match so anything could happen.

In this game the English, Bremen opening was played and I spotted something that surprised me a little at first. The original CGP was out of book at move 7 while the CGP2024’s stayed in book until move 9 when it had to start thinking. I will have to test this opening with the CGP2024 playing as black to see if its also out of book at move 7. I had thought that they would both have been out of book at the same time, but maybe this is normal and the book moves are unbalanced for white and black. According to the e-mail from Millennium the opening books in both machines are the same so this must be the case.

As a side note:
In the more detailed PDF manual Millennium e-mailed me for the CGP2024 it does not give any information about the books so I have suggested to Millennium they add more information such as names and numbers of moves.

So to the game. I had SF analyse it to highlight blunders but there’s little to report to be honest. Both machines played at their best and the moves marked as bad by SF were beyond the scope of either machine to calculate. For example, in the following position the CGP had just moved 22…Be6

White’s reply was 23.b4 but a better line of play would have been 23.Rf5 Bxf5 24.Rxf5 attacking the Queen 24…Qg6 25.Nf4 Qh7 only option! 26.e6 fxe6 27.Nxe6 and now White is in a very good position. But for the CG machines, to see this line of play through to a definitive advantage would be beyond their horizon.

It’s better to just play through and see the moves and decide for ourselves how well or badly the game was played. Despite being a draw I think they did well and when the CGP2024 offered a draw I accepted on behalf of the CGP as they were both showing a fairly consistent eval of or around 0.00

Current Score 3 – 2 to the CGP2024

Geändert von Ray (19.11.2023 um 13:15 Uhr) Grund: Spelling correction
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  #8  
Alt 19.11.2023, 09:02
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Re: Millennium CGPro2024 v Older CGPro

Game 6/10

[Event "CGP2024 V CGP 40m/2h 20m/1h Classic Book"]
[Round "6"]
[White "CGP2024"]
[Black "CGPro"]
[Result "0-1"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 Nxc3 9.Qxc3 c5 10.Rd1 d6 11.b3 Bf6 12.Bb2 Qc7 13.Qd2 Rd8 14.dxc5 dxc5 15.Qf4 Na6 16.Qxc7 Nxc7 17.Ne5 Bxg2 {Both players out of book} 18.Kxg2 Ne8 19.f3 g6 20.e4 Rac8 21.Rab1 Bg7 22.Bc3 f6 23.Ng4 f5 24.Bxg7 Kxg7 25.exf5 exf5 26.Ne3 Nc7 27.Nd5 Nxd5 28.cxd5 Rd6 29.Rb2 Rcd8 30.Rbd2 b5 31.Kf2 Kf6 32.Ke3 h6 33.h4 a5 34.f4 h5 35.a3 a4 36.bxa4 bxa4 37.Ke2 R8d7 38.Rd3 Kf7 39.R1d2 Re7+ 40.Kf3 Rb7 41.Re3 Rb3 42.Rdd3 Rxd3 43.Rxd3 Ke7 44.Rc3 Rxd5 45.Ke3 Kd6 46.Rc4 Kc6 47.Rxa4 Kb5 48.Ra7 c4 49.Rb7+ Kc6 50.Rg7 c3 51.Rg8 Kb7 52.Rg7+ Kb6 53.Rxg6+ Kc5 54.Rg8 Kc4 55.Rc8+ Kb3 56.a4 c2 57.Rb8+ Kxa4 58.Rc8 Kb3 59.Rb8+ Kc3 60.Rc8+ Kb2 61.Rb8+ Kc1 62.Ke2 Rd2+ 63.Ke1 Rd4 64.Ke2 Re4+ 65.Kf3 0-1


They played the Queen’s Indian, old main line for 16 moves.

Here is the position after Black moved 41…Rb3

At this point I was expecting the game to be a draw, both machines had played well. However, this is a key position and both players need to be careful especially as they both have passed pawns. White must not let Black’s c5 pawn through and must also maintain the pressure of his own passed pawn on d5, therefore the positions of the rooks are key here. One possible line of play is 42.Ke2 removing the pin on his e3 rook. 42…Rxe3ch 43.Kxe3 and the game is heading towards a draw. If instead black advances his pawn 42…c4 43.Rc2 Rxd5 44.Rxc4 Rb2ch 45.Kf3 and its leading to another draw. However, the new CGPro2024 made a bad move and the older CGPro capitalized on it!
From the above position White played 42.Rdd3? This allows black to exchange Rooks and now White has to defend his d5 pawn and worry about Black’s passed pawn, not good! 42…Rxd3! Yes, the CGPro sees the way ahead!

From here the CGPro played very well and the CGPro2024 offered resignation at move 65 which I accepted on behalf of the CGPro.

As was expected this match is very balanced so far with 3 points each but interesting. Obviously the extra knowledge in the newer machine did not help in this game.

Ray

Geändert von Ray (19.11.2023 um 13:14 Uhr) Grund: Spelling correction
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  #9  
Alt 20.11.2023, 12:18
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Re: Millennium CGPro2024 v Older CGPro

Game 7/10
[Event "CGP2024 V CGP 40m/2h 20m/1h Classic Book"]
[Round "7"]
[White "CGPRO"]
[Black "CGP2024"]
[Result "1/2-1/2"]
[ECO "C10"]

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Be7 6.Bc4 Ngf6 7.Nxf6+ Nxf6 8.Bg5 O-O 9.O-O b6 10.Ne5 Bb7 11.Re1 Nd5 12.Bxe7 Qxe7 {Both out of book} 13.Qf3 c5 14.dxc5 Qxc5 15.Bd3 Qc7 16.c4 Nf6 17.Qe3 Rfd8 18.Rad1 Rac8 19.Bc2 h6 20.Rxd8+ Rxd8 21.f3 Qc5 22.Qxc5 bxc5 23.Rd1 Rxd1+ 24.Bxd1 Kf8 25.Ba4 Ke7 26.h4 Ng8 27.Nd3 Kd6 28.Be8 f6 29.Bf7 Ne7 30.Bxe6 Ng6 31.h5 Ne5 32.Nf4 Bc6 33.b3 g5 34.hxg6 Nxg6 35.Nxg6 Kxe6 36.Kf2 Kd6 37.Nf4 a5 38.Ke3 Bd7 39.Nd5 Ke5 40.g4 Ke6 41.Nc3 f5 42.gxf5+ Kxf5 43.Ne4 h5 44.Nxc5 Bc6 45.a3 h4 46.b4 h3 47.Nd3 h2 48.Nf2 axb4 49.axb4 Bb7 50.b5 Ke6 51.c5 Kd5 52.c6 Bc8 53.Kf4 Be6 54.Kg3 Kc5 55.c7 Kxb5 56.Kxh2 Kc6 57.c8=Q+ Bxc8 58.Kg3 Kd5 59.Kh4 Bf5 60.Kg5 Ke6 61.Nd1 Bc2 62.Ne3 Bh7 63.f4 Be4 64.Nd1 Bd3 65.Nc3 Bc2 66.Ne2 Bb1 67.Nd4+ Ke7 68.Nb3 Be4 69.Nd2 Bd3 70.Nf3 1/2-1/2


In this game the French, Rubinstein variation was played until move 11.

All was level until around the half-way point. Here is the position after the CGP2024 moved 29…Ne7:

The CGP playing with the white pieces made a good move 30.Bxe6! If Black responds by taking white’s Bishop 30…KxB 31.Nxc5+ Ke5 and Black loses his Bishop. However, Black played 30…Ng6 and is a pawn down. Better would have been 30…Bxf3 31.gxf3 Kxe6 with a level position. The CGP2024 mis-calculated the position and not through a lack of search depth!

In the following position the CGP2024 made another bad move:

Black to play and a pawn down. Here the CGP2024 had not benefited from any extra endgame knowledge and made the move 33…g5? This weakens his Queen-side pawn structure after white plays 33.hxg6. White now has a winning chance.

However, as the game ended in a draw then obviously the original CGP must have also mis-calculated. In the following position white is in a good position with three passed pawns. Black does have a pawn on h3 but White can deal with that:

In this position the CGP turned a winning game into a draw with the move 47.Nd3? The game continued 47…h2 48.Nf2 to prevent Black queening 48…axb4 axb4 and now White cannot afford to move his knight and Black can hamper White’s pawn advance. A better move for White would have been 47.Ne4 maintaining the winning position. Play might have continued 47…h2 and now 48.Ng3+ is the best plan because Black cannot queen without losing it and he must move his King losing tempo:

Now White can move 49.b5 and Black is in trouble with passed pawns marching up the board!

I think in this case the CGP was unable to calculate far enough ahead to see the mistake and missed a winning chance.

Play battled on and I persevered in case of more mistakes but when the CGP2024 offered a draw I accepted on behalf of the CGP.

As expected they are level so far, although I really thought the newer model was going to lose this game.

3 ½ – 3 ½

Ray
Mit Zitat antworten
Folgende 6 Benutzer sagen Danke zu Ray für den nützlichen Beitrag:
Egbert (20.11.2023), ferribaci (20.11.2023), Mephisto_Risc (20.11.2023), paulwise3 (20.11.2023), Tibono (20.11.2023), udo (22.11.2023)
  #10  
Alt 21.11.2023, 12:58
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Re: Millennium CGPro2024 v Older CGPro

Game 8/10

It’s another draw, this time by 3rd fold repition. I hope this is not boring for people, but I’m actually enjoying the test of the CG Pro engines at this slow time control. I knew the match would be close but wanted to try and find out if the differences in the engines would be highlighted. So far the CGPro2024 has a won game in the least number of moves, but this doesn’t mean much. The same could happen the other way around given enough games, and there is time yet to witness this.

The older CGPro does calculate further ahead, especially noticeable in the end game and I have seen it calculate an extra 2ply. That said, it’s not made a difference so far in the score in this match so maybe the extra knowledge in the newer CGPro makes up for this? Swings and roundabouts as they say, in some positions the extra search depth may help and in others, the extra knowledge may make the difference.

[Event "CGP2024 V CGP 40m/2h 20m/1h Classic Book"]
[Round "8"]
[White "CGP2024"]
[Black "CGPro"]
[Result "1/2-1/2"]
[ECO "C49"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.O-O O-O 6.d3 d6 7.Bg5 Bxc3 8.bxc3 Bd7 9.Nd2 Ne7 10.Bxf6 gxf6 {Both out of book} 11.Bxd7 Qxd7 12.Qf3 Qe6 13.a4 b6 14.a5 Kh8 15.axb6 axb6 16.d4 Kg7 17.Rfb1 Rg8 18.d5 Qd7 19.c4 h6 20.Qh5 f5 21.Qh3 Rad8 22.Ra7 fxe4 23.Qxd7 Rxd7 24.Nxe4 f5 25.Ng3 Kf6 26.f3 Nc8 27.Rb7 Re7 28.Ra1 Kg6 29.Ra8 Reg7 30.Ne2 Ne7 31.Ra6 Nc8 32.Kf1 h5 33.Ra8 Kh6 34.g3 h4 35.Rbb8 Ne7 36.Rxg8 Nxg8 37.gxh4 Nf6 38.Kf2 Kh5 39.Rh8+ Kg6 40.Rf8 Rh7 41.Kg3 Re7 42.c3 Re8 43.Rxe8 Nxe8 44.Nc1 Kh5 45.Kh3 f4 46.Nd3 Ng7 47.Nf2 Nf5 48.Ne4 Nxh4 49.Nf6+ Kg5 50.Ne4+ Kh5 51.Nf6+ Kg5 52.Ne4+ Kh5 1/2-1/2


The Four Knights, symmetrical variation was played until both machines were out of book at move 10.

It’s been mentioned before but the Classic book (London) contains dubious lines and that is the case in this game. At move 9 both machines were still in book but the selected moves starting from Black’s 8th move are either interesting or dubious:

Black had just moved 8…Bd7?! Qe7 is considered good.

Play continued 9.Nd2 Ne7? Better would have been the book move 9…h6! 10.Bxf6 gxf6 11/Bxd7 Qxd7:

And white is in a much stronger position while Black’s King is now exposed.

Apart from weakness in the Classic opening book both machines played accurately and defended well, so we have the unsurprising draw.

Score now is 4 – 4

Ray
Mit Zitat antworten
Folgende 5 Benutzer sagen Danke zu Ray für den nützlichen Beitrag:
Egbert (21.11.2023), Mapi (21.11.2023), Mephisto_Risc (21.11.2023), paulwise3 (21.11.2023), Tibono (21.11.2023)
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