CCRL 40/40
Downloads and Statistics
March 23, 2019
Testing summary:
Total: 1'009'555 games
played by 2'389 programs
138832 CPU days (X2 4600+)

White wins: 350'040 (34.7%)
Black wins: 260'174 (25.8%)
Draws: 399'341 (39.6%)
White score: 54.5%

Free 32-bit 4-CPU engines

Comparing 16 engines!
9 best versions of selected engines played 95 games with each other

CCRL 40/40 Rating List — Free 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 March 23, 2019 with Bayeselo based on 1'009'555 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+
 ChessBrainVB 3.72 4CPU3183+39−3944.4%+35.750.0%196 
99.3%
1ChessBrainVB 3.68 4CPU3123+26−2649.2%+4.051.6%428
81.7%
 ChessBrainVB 3.66 4CPU3105+28−2854.2%−27.048.7%378
100.0%
2Spike 1.4 Leiden 4CPU3016+11−1145.2%+29.447.7%2862
100.0%
3Toga II 3.0 4CPU2919+22−2345.6%+26.849.0%592
85.8%
 Toga II 1.4.1SE 4CPU2904+13−1348.5%+10.941.6%2041
78.9%
4Bright 0.4a 4CPU2897+15−1547.4%+16.541.1%1495
67.2%
 Bright 0.5c 4CPU2890+23−2347.2%+19.442.9%616
64.9%
 Toga II 1.4 beta5c 4CPU2884+18−1851.7%−11.545.8%996
100.0%
 Bright 0.3a 4CPU2830+18−1842.4%+50.741.8%988
79.3%
5Jonny 4.00 4CPU2816+26−2642.9%+47.735.7%476
73.3%
 Bright 0.2c 4CPU2805+21−2143.9%+40.243.2%724
100.0%
6Scorpio 2.0 32-bit 4CPU2731+24−2433.4%+115.436.7%607
98.7%
7Hamsters 0.7.1 4CPU2681+36−3556.7%−45.238.6%254
64.4%
8Pharaon 3.5.1 4CPU2673+26−2643.6%+41.129.7%518
100.0%
9Nemeton 1.8 4CPU2535+28−2852.3%−16.128.2%464
 

Results matrix

Free 32-bit 4-CPU engines (best versions only)
#NameElo123456789
1ChessBrainVB 3.68 4CPU3123         
2Spike 1.4 Leiden 4CPU3016  7 − 5
+4−2=6
−48
 2 − 0
+2−0=0
+INF
    
3Toga II 3.0 4CPU2919 5 − 7
+2−4=6
+48
  2 − 0
+2−0=0
+INF
    
4Bright 0.4a 4CPU2897     25 − 7
+21−3=8
+40
   
5Jonny 4.00 4CPU2816 0 − 2
+0−2=0
−INF
0 − 2
+0−2=0
−INF
    11 − 5
+9−3=4
−9
 
6Scorpio 2.0 32-bit 4CPU2731   7 − 25
+3−21=8
−40
   18 − 9
+13−4=10
+48
 
7Hamsters 0.7.1 4CPU2681       1.5 − 2.5
+0−1=3
−67
 
8Pharaon 3.5.1 4CPU2673    5 − 11
+3−9=4
+9
9 − 18
+4−13=10
−48
2.5 − 1.5
+1−0=3
+67
  
9Nemeton 1.8 4CPU2535         
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 4-CPU engines (best versions only)
#NameElo123456789
1ChessBrainVB 3.68 4CPU3123 100.0100.0100.0100.0100.0100.0100.0100.0
2Spike 1.4 Leiden 4CPU30160.0 100.0100.0100.0100.0100.0100.0100.0
3Toga II 3.0 4CPU29190.00.0 94.3100.0100.0100.0100.0100.0
4Bright 0.4a 4CPU28970.00.05.7 100.0100.0100.0100.0100.0
5Jonny 4.00 4CPU28160.00.00.00.0 100.0100.0100.0100.0
6Scorpio 2.0 32-bit 4CPU27310.00.00.00.00.0 98.7100.0100.0
7Hamsters 0.7.1 4CPU26810.00.00.00.00.01.3 64.4100.0
8Pharaon 3.5.1 4CPU26730.00.00.00.00.00.035.6 100.0
9Nemeton 1.8 4CPU25350.00.00.00.00.00.00.00.0 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

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Results table
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Score table
LOS table
Proportion of draws
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Number of connecting games
Percentage of connecting games
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LOS with common opponents
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Reference rating list:
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Created in 2005-2013 by CCRL team
Last games added on March 23, 2019