CCRL 40/4
Downloads and Statistics
August 17, 2019
Testing summary:
Total: 2'085'472 games
played by 2'422 programs
28065 CPU days (X2 4600+)

White wins: 809'852 (38.8%)
Black wins: 654'916 (31.4%)
Draws: 620'704 (29.8%)
White score: 53.7%

Open source 32-bit multi-CPU engines

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

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

Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 4 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 1.5 minutes on a modern Intel CPU.
Computed on August 17, 2019 with Bayeselo based on 2'085'472 games

Color legend: Commercial, Free, Open source, Private.
Bold font - tested with 300 games or more. Normal font - less than 300 games.

RankNameRatingScoreAverage
Opponent
DrawsGamesLOS
Elo+
1ChessBrainVB 3.70 4CPU3127+23−2356.7%−43.342.1%611 
100.0%
2Toga II 3.0 4CPU2931+17−1725.3%+195.728.5%1459
99.7%
 Toga II 1.4 beta5c 4CPU2904+8−935.7%+105.333.9%5355
75.8%
 Toga II 1.4.1SE 4CPU2899+11−1144.9%+37.735.8%3128
100.0%
3Glaurung 1.2.1 32-bit 4CPU2769+15−1543.2%+46.333.8%1495
99.9%
4Scorpio 2.0 32-bit 4CPU2730+20−2029.1%+154.329.4%1005
100.0%
5Nemeton 1.81 4CPU2490+24−2451.1%−6.924.5%600
82.4%
 Nemeton 1.7 4CPU2472+30−3049.1%+6.724.4%377
 

Results matrix

Open source 32-bit multi-CPU engines (best versions only)
#NameElo12345
1ChessBrainVB 3.70 4CPU3127     
2Toga II 3.0 4CPU2931     
3Glaurung 1.2.1 32-bit 4CPU2769     
4Scorpio 2.0 32-bit 4CPU2730     
5Nemeton 1.81 4CPU2490     
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 multi-CPU engines (best versions only)
#NameElo12345
1ChessBrainVB 3.70 4CPU3127 100.0100.0100.0100.0
2Toga II 3.0 4CPU29310.0 100.0100.0100.0
3Glaurung 1.2.1 32-bit 4CPU27690.00.0 99.9100.0
4Scorpio 2.0 32-bit 4CPU27300.00.00.1 100.0
5Nemeton 1.81 4CPU24900.00.00.00.0 
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 August 17, 2019