CCRL 40/4
Downloads and Statistics
October 19, 2019
Testing summary:
Total: 2'120'567 games
played by 2'479 programs
28673 CPU days (X2 4600+)

White wins: 822'832 (38.8%)
Black wins: 665'262 (31.4%)
Draws: 632'473 (29.8%)
White score: 53.7%

Free 32-bit multi-CPU engines

Comparing 14 engines!
8 best versions of selected engines played 137 games with each other

CCRL 40/4 Rating List — Free 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 CPU.
Computed on October 19, 2019 with Bayeselo based on 2'120'567 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%−43.942.1%611 
100.0%
2Spike 1.4 Leiden 4CPU3039+10−1039.3%+75.036.4%4091
100.0%
3Toga II 3.0 4CPU2930+17−1725.3%+196.428.5%1459
97.7%
4Bright 0.4a 4CPU2910+11−1142.4%+50.133.9%3023
67.0%
 Bright 0.5c 4CPU2906+14−1436.5%+92.135.7%1715
59.0%
 Toga II 1.4 beta5c 4CPU2904+9−935.7%+105.033.9%5355
76.2%
 Toga II 1.4.1SE 4CPU2899+11−1144.9%+37.335.8%3128
100.0%
 Bright 0.3a 4CPU2853+14−1443.7%+40.634.6%1756
100.0%
 Bright 0.2c 4CPU2812+17−1735.5%+101.730.1%1244
100.0%
5Glaurung 1.2.1 32-bit 4CPU2769+15−1543.2%+46.033.8%1495
99.9%
6Scorpio 2.0 32-bit 4CPU2730+20−2029.1%+154.129.4%1005
100.0%
7Pharaon 3.5.1 4CPU2674+23−2441.7%+58.228.9%634
100.0%
8Nemeton 1.81 4CPU2490+24−2451.1%−6.924.5%600
82.5%
 Nemeton 1.7 4CPU2472+30−3149.1%+6.724.4%377
 

Results matrix

Free 32-bit multi-CPU engines (best versions only)
#NameElo12345678
1ChessBrainVB 3.70 4CPU3127 33.5 − 14.5
+25−6=17
+42
      
2Spike 1.4 Leiden 4CPU303914.5 − 33.5
+6−25=17
−42
 32 − 18
+23−9=18
−17
     
3Toga II 3.0 4CPU2930 18 − 32
+9−23=18
+17
      
4Bright 0.4a 4CPU2910        
5Glaurung 1.2.1 32-bit 4CPU2769        
6Scorpio 2.0 32-bit 4CPU2730      22 − 17
+15−10=14
−12
 
7Pharaon 3.5.1 4CPU2674     17 − 22
+10−15=14
+12
  
8Nemeton 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

Free 32-bit multi-CPU engines (best versions only)
#NameElo12345678
1ChessBrainVB 3.70 4CPU3127 100.0100.0100.0100.0100.0100.0100.0
2Spike 1.4 Leiden 4CPU30390.0 100.0100.0100.0100.0100.0100.0
3Toga II 3.0 4CPU29300.00.0 97.7100.0100.0100.0100.0
4Bright 0.4a 4CPU29100.00.02.3 100.0100.0100.0100.0
5Glaurung 1.2.1 32-bit 4CPU27690.00.00.00.0 99.9100.0100.0
6Scorpio 2.0 32-bit 4CPU27300.00.00.00.00.1 100.0100.0
7Pharaon 3.5.1 4CPU26740.00.00.00.00.00.0 100.0
8Nemeton 1.81 4CPU24900.00.00.00.00.00.00.0 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

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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 October 19, 2019