CCRL 40/4
Downloads and Statistics
September 14, 2019
Testing summary:
Total: 2'097'576 games
played by 2'442 programs
28220 CPU days (X2 4600+)

White wins: 814'639 (38.8%)
Black wins: 658'954 (31.4%)
Draws: 623'983 (29.7%)
White score: 53.7%

Engine Details

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Ethereal 8.81 64-bit in CCRL 40/4, 2019-09-14
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.
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/404/

CCRL 40/4 main list:
Ethereal 8.81 64-bit has no rank with rating of 2945 Elo points (+24 -24),
based on 580 games: 160 wins, 216 losses and 204 draws
Score: 45.2%, Average opponent: +33.2, Draws: 35.2%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Gull 3 64-bit                      3192   5.5-14.5  (+2 -11=7 )    0.0   +99
 - Strelka 5.5 64-bit                 3141   3.5-16.5  (+1 -14=5 )    0.0   -44
 - Laser 1.5 64-bit                   3095   3.0-17.0  (+0 -14=6 )    0.0  -100
 - Protector 1.9.0 64-bit             3084   7.0-13.0  (+4 -10=6 )    0.0   +38
 - Senpai 2.0 64-bit                  3084   6.0-14.0  (+3 -11=6 )    0.0    -1
 - iCE 3.0 64-bit                     3081   8.0-12.0  (+4 -8 =8 )    0.0   +70
 - Nemorino 4.00 64-bit               3067   6.5-13.5  (+2 -9 =9 )    0.0   +15
 - Sting SF 9 64-bit                  3049   4.0-16.0  (+1 -13=6 )    0.0  -104
 - Defenchess 1.1f 64-bit             3047   5.0-15.0  (+2 -12=6 )    0.0   -71
 - Naum 4.6 64-bit                    3032   6.5-13.5  (+5 -12=3 )    0.0   -52
 - Pedone 1.6 64-bit                  3032   7.0-13.0  (+3 -9 =8 )    0.0   -12
 - SmarThink 1.97 64-bit              3031   6.5-13.5  (+3 -10=7 )    0.0   -27
 - Hakkapeliitta TCEC v2 64-bit       3022   9.5-10.5  (+6 -7 =7 )    0.0   +57
 - Alfil 15.8 64-bit                  2982   9.5-10.5  (+5 -6 =9 )    1.0   +20
 - Wasp 2.6 64-bit                    2978   9.5-10.5  (+7 -8 =5 )    1.0   +16
 - Bobcat 8.0 64-bit                  2959  11.0-9.0   (+6 -4 =10)   14.4   +39
 - Cheng 4.39 64-bit                  2945  11.0-9.0   (+8 -6 =6 )   48.9   +36
 - Amoeba 2.7 64-bit                  2938   9.5-10.5  (+5 -6 =9 )   67.9   -23
 - Crafty 25.2 64-bit                 2933  10.0-10.0  (+7 -7 =6 )   81.6   -14
 - Spike 1.4 Leiden                   2922  10.5-9.5   (+9 -8 =3 )   96.6    -5
 - Toga II 4.0 64-bit                 2915  10.0-10.0  (+6 -6 =8 )   98.1   -30
 - EXchess 7.97b 64-bit               2913  11.0-9.0   (+5 -3 =12)   99.1    -6
 - Quazar 0.4 64-bit                  2900  11.5-8.5   (+7 -4 =9 )  100.0    +3
 - Thinker 5.4d Inert 64-bit          2885  13.5-6.5   (+10-3 =7 )  100.0   +58
 - Fruit Reloaded 3.2.1 64-bit        2872  13.0-7.0   (+9 -3 =8 )  100.0   +22
 - Ethereal 8.61 64-bit               2862  14.0-6.0   (+9 -1 =10)  100.0   +38
 - Tornado 8.0 64-bit                 2827  12.0-8.0   (+9 -5 =6 )  100.0   -47
 - The Baron 3.41 64-bit              2820  13.5-6.5   (+9 -2 =9 )  100.0   -14
 - BugChess2 1.9 64-bit               2759  14.5-5.5   (+13-4 =3 )  100.0    -9


Created in 2005-2013 by CCRL team
Last games added on September 14, 2019