CCRL 40/40
Downloads and Statistics
July 19, 2019
Testing summary:
Total: 1'068'538 games
played by 2'502 programs
146028 CPU days (X2 4600+)

White wins: 371'241 (34.7%)
Black wins: 276'263 (25.9%)
Draws: 421'034 (39.4%)
White score: 54.4%

Open source 32-bit 4-CPU engines

Comparing 8 engines!
4 best versions of selected engines played 0 games with each other

CCRL 40/40 Rating List — Open source 32-bit 4-CPU engines (Quote)

Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern Intel CPU.
Computed on July 19, 2019 with Bayeselo based on 1'068'538 games

Color legend: Commercial, Free, Open source, Private.
Bold font - tested with 200 games or more. Normal font - less than 200 games.

RankNameRatingScoreAverage
Opponent
DrawsGamesLOS
Elo+
1ChessBrainVB 3.72 4CPU3174+32−3246.5%+21.750.3%286 
99.1%
 ChessBrainVB 3.68 4CPU3123+26−2649.2%+4.551.6%428
81.4%
 ChessBrainVB 3.66 4CPU3106+28−2854.2%−27.448.7%378
100.0%
2Toga II 3.0 4CPU2919+22−2345.6%+26.749.0%592
85.4%
 Toga II 1.4.1SE 4CPU2904+13−1348.5%+11.141.6%2041
96.2%
 Toga II 1.4 beta5c 4CPU2885+18−1851.7%−12.145.8%996
100.0%
3Scorpio 2.0 32-bit 4CPU2732+24−2433.4%+114.636.7%607
100.0%
4Nemeton 1.8 4CPU2529+27−2749.9%+1.627.2%496
 

Results matrix

Open source 32-bit 4-CPU engines (best versions only)
#NameElo1234
1ChessBrainVB 3.72 4CPU3174    
2Toga II 3.0 4CPU2919    
3Scorpio 2.0 32-bit 4CPU2732    
4Nemeton 1.8 4CPU2529    
Performance color legend:
(Only pairs with at least 30 games)
-120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120

LOS matrix

Open source 32-bit 4-CPU engines (best versions only)
#NameElo1234
1ChessBrainVB 3.72 4CPU3174 100.0100.0100.0
2Toga II 3.0 4CPU29190.0 100.0100.0
3Scorpio 2.0 32-bit 4CPU27320.00.0 100.0
4Nemeton 1.8 4CPU25290.00.00.0 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

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Rating list
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Results table
Performance table
Score table
LOS table
Proportion of draws
Number of games
Number of connecting games
Percentage of connecting games
Score with common opponents
Score with all opponents
Performance with common opponents
Performance with all opponents
LOS with common opponents
LOS with all opponents

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Reference rating list:
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Created in 2005-2013 by CCRL team
Last games added on July 19, 2019