CCRL 40/40
Downloads and Statistics
September 21, 2019
Testing summary:
Total: 1'084'933 games
played by 2'536 programs
148136 CPU days (X2 4600+)

White wins: 376'624 (34.7%)
Black wins: 280'046 (25.8%)
Draws: 428'263 (39.5%)
White score: 54.5%

Engine Details

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NirvanaChess 2.1c 64-bit in CCRL 40/40, 2019-09-21
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, 2005-2019, http://computerchess.org.uk/ccrl/4040/

CCRL 40/40 main list:
NirvanaChess 2.1c 64-bit has no rank with rating of 3022 Elo points (+23 -23),
based on 564 games: 131 wins, 134 losses and 299 draws
Score: 49.7%, Average opponent: +2.3, Draws: 53.0%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Stockfish 6 64-bit                 3225   4.0-8.0   (+0 -4 =8 )    0.0  +111
 - Fire 4 64-bit                      3146   5.5-16.5  (+3 -14=5 )    0.0   -60
 - Gull 3 64-bit                      3120   7.0-17.0  (+3 -13=8 )    0.0   -45
 - Strelka 5.5 64-bit                 3104   3.5-6.5   (+1 -4 =5 )    0.0    -4
 - Critter 1.6a 64-bit                3101   8.0-14.0  (+1 -7 =14)    0.0    +3
 - Equinox 3.30 64-bit                3086  11.5-12.5  (+3 -4 =17)    0.0   +53
 - Rybka 4.1 64-bit                   3078   6.5-5.5   (+4 -3 =5 )    0.0   +83
 - Bouquet 1.8 64-bit                 3075   6.5-13.5  (+2 -9 =9 )    0.0   -58
 - Alfil 15.7 64-bit                  3057   2.0-2.0   (+0 -0 =4 )    0.5   +35
 - BlackMamba 2.0 64-bit              3056  11.0-13.0  (+4 -6 =14)    0.3   +12
 - Vitruvius 1.11C 64-bit             3049   1.0-1.0   (+0 -0 =2 )    2.5   +27
 - Rybka 3 64-bit                     3048   4.0-4.0   (+1 -1 =6 )    2.6   +30
 - Elektro 1.2 64-bit                 3042   7.5-6.5   (+3 -2 =9 )    9.0   +40
 - Hannibal 1.5 64-bit                3040  18.0-14.0  (+10-6 =16)    8.6   +53
 - Sting SF 5 64-bit                  3040  15.0-18.0  (+5 -8 =20)   11.1    -8
 - Protector 1.8.0 64-bit             3039  12.5-15.5  (+5 -8 =15)   11.7   -13
 - Chiron 2 64-bit                    3015  10.0-10.0  (+5 -5 =10)   72.6    -4
 - Naum 4.6 64-bit                    3013  14.5-14.5  (+5 -5 =19)   78.2    -7
 - Protector 1.7.0 64-bit             3010   4.5-5.5   (+1 -2 =7 )   79.8   -39
 - Texel 1.05 64-bit                  3009  13.5-10.5  (+9 -6 =9 )   82.9   +25
 - Andscacs 0.82 64-bit               3009   7.5-8.5   (+3 -4 =9 )   79.3   -36
 - Andscacs 0.81 64-bit               3004   4.5-5.5   (+2 -3 =5 )   85.6   -45
 - Alfil 15.8 64-bit                  2964   4.0-2.0   (+2 -0 =4 )  100.0   +31
 - Senpai 1.0 64-bit                  2962   6.0-4.0   (+3 -1 =6 )  100.0    -4
 - Andscacs 0.80 64-bit               2962  15.0-11.0  (+7 -3 =16)  100.0   -20
 - Hiarcs 14                          2962   5.5-4.5   (+3 -2 =5 )  100.0   -28
 - Fizbo 1.5 64-bit                   2957  12.0-10.0  (+6 -4 =12)  100.0   -38
 - Deep Shredder 12 64-bit            2940   6.5-3.5   (+4 -1 =5 )  100.0    +6
 - Fizbo 1.4 64-bit                   2929   7.0-3.0   (+5 -1 =4 )  100.0   +37
 - Cheng 4.39 64-bit                  2921  15.0-5.0   (+11-1 =8 )  100.0   +60
 - Deep Junior Yokohama 64-bit        2920   4.0-6.0   (+1 -3 =6 )  100.0  -157
 - SmarThink 1.70 64-bit              2918   6.5-3.5   (+4 -1 =5 )  100.0   -17
 - Vajolet2 2.0 64-bit                2917   8.0-2.0   (+6 -0 =4 )  100.0   +90
 - DiscoCheck 5.2 64-bit              2901   6.5-3.5   (+4 -1 =5 )  100.0   -29
 - Cheng4 0.38 64-bit                 2890   6.5-3.5   (+5 -2 =3 )  100.0   -27


Created in 2005-2013 by CCRL team
Last games added on September 21, 2019