CCRL 40/40
Downloads and Statistics
November 16, 2019
Testing summary:
Total: 1'098'633 games
played by 2'562 programs
150143 CPU days (X2 4600+)

White wins: 380'990 (34.7%)
Black wins: 283'127 (25.8%)
Draws: 434'516 (39.6%)
White score: 54.5%

Engine Details

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Stockfish 1.9.1 64-bit 4CPU in CCRL 40/40, 2019-11-16
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:
Stockfish 1.9.1 64-bit 4CPU has no rank with rating of 3114 Elo points (+23 -22),
based on 615 games: 232 wins, 95 losses and 288 draws
Score: 61.1%, Average opponent: −75.1, Draws: 46.8%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Houdini 1.5a 64-bit 4CPU           3184  16.5-32.5  (+4 -20=25)    0.0   -27
 - Vajolet2 2.7 64-bit 4CPU           3177   6.5-13.5  (+1 -8 =11)    0.0   -38
 - RubiChess 1.5 64-bit 4CPU          3164   9.5-5.5   (+5 -1 =9 )    0.4  +128
 - Rybka 4 64-bit 4CPU                3148  33.0-43.0  (+15-25=36)    0.3    -4
 - Rybka 4.1 64-bit 4CPU              3145  11.5-20.5  (+3 -12=17)    0.7   -53
 - Arasan 20.4.1 64-bit 4CPU          3121   5.5-4.5   (+3 -2 =5 )   35.0   +37
 - Stockfish 1.8 64-bit 4CPU          3107  15.0-18.0  (+3 -6 =24)   67.4   -31
 - Critter 0.90 64-bit 4CPU           3079  19.5-14.5  (+9 -4 =21)   96.9    +6
 - Naum 4.2 64-bit 4CPU               3061  29.5-18.5  (+17-6 =25)  100.0   +15
 - Deep Shredder 12 64-bit 4CPU       3019  26.5-13.5  (+18-5 =17)  100.0    +7
 - Zappa Mexico II 64-bit 4CPU        2969  46.5-19.5  (+29-2 =35)  100.0   -25
 - Deep Sjeng WC2008 64-bit 4CPU      2926  52.5-14.5  (+40-2 =25)  100.0    +1
 - Thinker 5.4c Inert 64-bit 4CPU     2924  63.5-12.5  (+52-1 =23)  100.0   +51
 - Bright 0.5c 4CPU                   2891  40.5-8.5   (+33-1 =15)  100.0   +10


Created in 2005-2013 by CCRL team
Last games added on November 16, 2019