CCRL 40/40
Downloads and Statistics
December 9, 2017
Testing summary:
Total: 766'023 games
played by 1'997 programs
104955 CPU days (X2 4600+)

White wins: 262'896 (34.3%)
Black wins: 194'802 (25.4%)
Draws: 308'325 (40.3%)
White score: 54.4%

Engine Details

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NirvanaChess 2.1c 64-bit in CCRL 40/40, 2017-12-09
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.
Tested by CCRL team, 2005-2017, http://computerchess.org.uk/ccrl/4040/

CCRL 40/40 main list:
NirvanaChess 2.1c 64-bit has no rank with rating of 3024 Elo points (+23 -23),
based on 564 games: 131 wins, 134 losses and 299 draws
Score: 49.7%, Average opponent: +2.0, Draws: 53.0%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - Stockfish 6 64-bit                3227   4.0-8.0   (+0 -4 =8 )    0.0  +111
 - Fire 4 64-bit                     3147   5.5-16.5  (+3 -14=5 )    0.0   -61
 - Gull 3 64-bit                     3118   7.0-17.0  (+3 -13=8 )    0.0   -49
 - Strelka 5.5 64-bit                3108   3.5-6.5   (+1 -4 =5 )    0.0    -2
 - Critter 1.6a 64-bit               3103   8.0-14.0  (+1 -7 =14)    0.0    +3
 - Equinox 3.30 64-bit               3088  11.5-12.5  (+3 -4 =17)    0.0   +53
 - Rybka 4.1 64-bit                  3081   6.5-5.5   (+4 -3 =5 )    0.0   +84
 - Bouquet 1.8 64-bit                3077   6.5-13.5  (+2 -9 =9 )    0.0   -58
 - BlackMamba 2.0 64-bit             3061  11.0-13.0  (+4 -6 =14)    0.2   +15
 - Alfil 15.7 64-bit                 3058   2.0-2.0   (+0 -0 =4 )    0.7   +34
 - Vitruvius 1.11C 64-bit            3052   1.0-1.0   (+0 -0 =2 )    2.0   +28
 - Rybka 3 64-bit                    3051   4.0-4.0   (+1 -1 =6 )    2.3   +31
 - Elektro 1.2 64-bit                3044   7.5-6.5   (+3 -2 =9 )    8.7   +40
 - Sting SF 5 64-bit                 3042  15.0-18.0  (+5 -8 =20)   10.9    -8
 - Hannibal 1.5 64-bit               3042  18.0-14.0  (+10-6 =16)    8.5   +53
 - Protector 1.8.0 64-bit            3041  12.5-15.5  (+5 -8 =15)   11.4   -13
 - Naum 4.6 64-bit                   3017  14.5-14.5  (+5 -5 =19)   71.1    -5
 - Chiron 2 64-bit                   3016  10.0-10.0  (+5 -5 =10)   73.3    -5
 - Protector 1.7.0 64-bit            3012   4.5-5.5   (+1 -2 =7 )   79.5   -39
 - Texel 1.05 64-bit                 3011  13.5-10.5  (+9 -6 =9 )   83.2   +25
 - Andscacs 0.82 64-bit              3011   7.5-8.5   (+3 -4 =9 )   79.4   -36
 - Andscacs 0.81 64-bit              3004   4.5-5.5   (+2 -3 =5 )   87.9   -47
 - Senpai 1.0 64-bit                 2963   6.0-4.0   (+3 -1 =6 )  100.0    -5
 - Hiarcs 14                         2963   5.5-4.5   (+3 -2 =5 )  100.0   -29
 - Andscacs 0.80 64-bit              2962  15.0-11.0  (+7 -3 =16)  100.0   -22
 - Alfil 15.8 64-bit                 2962   4.0-2.0   (+2 -0 =4 )  100.0   +27
 - Fizbo 1.5 64-bit                  2959  12.0-10.0  (+6 -4 =12)  100.0   -38
 - Deep Shredder 12 64-bit           2942   6.5-3.5   (+4 -1 =5 )  100.0    +6
 - Fizbo 1.4 64-bit                  2930   7.0-3.0   (+5 -1 =4 )  100.0   +36
 - Deep Junior Yokohama 64-bit       2922   4.0-6.0   (+1 -3 =6 )  100.0  -157
 - Cheng 4.39 64-bit                 2920  15.0-5.0   (+11-1 =8 )  100.0   +57
 - SmarThink 1.70 64-bit             2919   6.5-3.5   (+4 -1 =5 )  100.0   -18
 - Vajolet2 2.0 64-bit               2918   8.0-2.0   (+6 -0 =4 )  100.0   +89
 - DiscoCheck 5.2 64-bit             2902   6.5-3.5   (+4 -1 =5 )  100.0   -30
 - Cheng4 0.38 64-bit                2891   6.5-3.5   (+5 -2 =3 )  100.0   -28


Created in 2005-2013 by CCRL team
Last games added on December 9, 2017