CCRL 40/40
Downloads and Statistics
December 7, 2019
Testing summary:
Total: 1'104'002 games
played by 2'573 programs
150928 CPU days (X2 4600+)

White wins: 382'601 (34.7%)
Black wins: 284'129 (25.7%)
Draws: 437'272 (39.6%)
White score: 54.5%

Engine Details

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NirvanaChess 2.0a 64-bit 4CPU in CCRL 40/40, 2019-12-07
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 CPU.
Tested by CCRL team, 2005-2019, http://ccrl.chessdom.com/ccrl/4040/

CCRL 40/40 main list:
NirvanaChess 2.0a 64-bit 4CPU has no rank with rating of 3056 Elo points (+30 -30),
based on 337 games: 66 wins, 102 losses and 169 draws
Score: 44.7%, Average opponent: +35.7, Draws: 50.1%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Stockfish 6 64-bit 4CPU            3291   7.5-42.5  (+0 -35=15)    0.0   -17
 - Fire 4 64-bit 4CPU                 3198   1.0-3.0   (+0 -2 =2 )    0.0    -7
 - Gull 3 64-bit 4CPU                 3180   2.0-2.0   (+1 -1 =2 )    0.0  +124
 - Equinox 3.30 64-bit 4CPU           3162   2.0-2.0   (+1 -1 =2 )    0.0  +106
 - Rybka 4.1 64-bit 4CPU              3144   0.5-3.5   (+0 -3 =1 )    0.0  -194
 - Sting SF 4.8.4 64-bit 4CPU         3132   2.0-4.0   (+1 -3 =2 )    0.0   -36
 - Elektro 1.2 64-bit 4CPU            3118   1.5-2.5   (+0 -1 =3 )    0.1    +2
 - Hannibal 1.5 64-bit 4CPU           3110  12.5-17.5  (+5 -10=15)    0.1    +4
 - Naum 4.6 64-bit 4CPU               3095  11.0-14.0  (+3 -6 =16)    0.9    +6
 - Chiron 2 64-bit 4CPU               3085   2.5-3.5   (+1 -2 =3 )    4.1   -16
 - Texel 1.05 64-bit 4CPU             3084  22.5-23.5  (+9 -10=27)    4.6   +21
 - Critter 0.90 64-bit 4CPU           3078   0.0-2.0   (+0 -2 =0 )   16.0  -INF
 - Hannibal 1.4b 64-bit 4CPU          3077   6.5-10.5  (+1 -5 =11)   10.6   -42
 - Protector 1.7.0 64-bit 4CPU        3075  10.5-10.5  (+4 -4 =13)   14.2   +20
 - Hiarcs 14 4CPU                     3054   1.0-5.0   (+0 -4 =2 )   54.8  -233
 - Deep Junior Yokohama 64-bit 4CPU   3025   2.5-3.5   (+0 -1 =5 )   96.4   -68
 - Senpai 1.0 64-bit 4CPU             3023  13.0-9.0   (+7 -3 =12)   97.0   +20
 - Deep Shredder 12 64-bit 4CPU       3018   3.0-3.0   (+2 -2 =2 )   99.0   -38
 - Rybka 2.3.2a 64-bit 4CPU           3017   1.5-0.5   (+1 -0 =1 )   98.8  +117
 - Spike 1.4 Leiden 4CPU              3016  11.5-10.5  (+3 -2 =17)   99.3   -29
 - Cheng4 0.38 64-bit 4CPU            2980  24.0-10.0  (+19-5 =10)  100.0   +68
 - Fizbo 1.31 64-bit 4CPU             2955   1.5-0.5   (+1 -0 =1 )  100.0   +55
 - Tornado 6.0 64-bit 4CPU            2896  10.5-3.5   (+7 -0 =7 )  100.0    -7


Created in 2005-2013 by CCRL team
Last games added on December 7, 2019