CCRL 40/40
Downloads and Statistics
November 18, 2017
Testing summary:
Total: 756'425 games
played by 1'967 programs
103446 CPU days (X2 4600+)

White wins: 259'856 (34.4%)
Black wins: 192'693 (25.5%)
Draws: 303'876 (40.2%)
White score: 54.4%

Engine Details

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Butcher 1.61 64-bit in CCRL 40/40, 2017-11-18
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:
Butcher 1.61 64-bit is #228-229 with rating of 2329 Elo points (+31 -31),
based on 361 games: 131 wins, 142 losses and 88 draws
Score: 48.5%, Average opponent: +12.4, Draws: 24.4%


Pairwise results:
     Opponent                        Elo     Score                  LOS   Perf
 - NirvanaChess 1.1 64-bit           2547   1.0-2.0   (+1 -2 =0 )    0.0   +52
 - Gogobello 1.0 64-bit              2463   2.0-2.0   (+2 -2 =0 )    0.0  +134
 - Patzer 3.80                       2405   9.0-15.0  (+7 -13=4 )    0.0   -19
 - Sjakk 2.0 64-bit                  2400   1.0-2.0   (+1 -2 =0 )    0.0   -85
 - pikoSzachy 3.4                    2395  11.5-12.5  (+10-11=3 )    0.2   +53
 - Phalanx XXII                      2392  11.0-13.0  (+9 -11=4 )    0.1   +31
 - Sorgenkind 0.4                    2386  11.0-13.0  (+8 -10=6 )    0.1   +27
 - Gosu 0.16                         2386   9.5-14.5  (+6 -11=7 )    0.1   -14
 - Jazz 721 64-bit                   2384   1.0-1.0   (+1 -1 =0 )    0.3   +55
 - Ares 1.004                        2371  10.0-14.0  (+7 -11=6 )    0.9   -20
 - Tytan 9.3                         2371   9.5-14.5  (+6 -11=7 )    1.5   -34
 - TJchess 1.1 64-bit                2362   0.0-2.0   (+0 -2 =0 )    4.1  -INF
 - Plisk 0.2.6 32-bit                2351   1.0-0.0   (+1 -0 =0 )   17.3  +INF
 - Flux 2.2.1                        2348  10.5-13.5  (+7 -10=7 )   15.8   -22
 - GreKo 5.9                         2346   1.5-0.5   (+1 -0 =1 )   19.8  +135
 - Jumbo 0.4.17 64-bit               2340   4.5-5.5   (+3 -4 =3 )   30.8   -20
 - Ifrit m1.6 32-bit                 2339   1.0-2.0   (+0 -1 =2 )   33.9   -71
 - Aice 0.99.2                       2335   9.5-14.5  (+7 -12=5 )   37.9   -74
 - EveAnn 1.71                       2324   1.0-1.0   (+0 -0 =2 )   58.2    -5
 - Plisk 0.2.6 64-bit                2322  10.5-15.5  (+6 -11=9 )   62.7   -72
 - Capivara LK 0.09a01a 64-bit       2305   2.0-1.0   (+1 -0 =2 )   87.7   +58
 - Waxman 2011                       2303   2.0-1.0   (+2 -1 =0 )   89.0  +130
 - Sjakk 1.1.8                       2300  16.5-7.5   (+14-5 =5 )   92.7  +107
 - Alex 2.09                         2299   0.5-1.5   (+0 -1 =1 )   91.2  -186
 - Zeus 1.29                         2296   0.5-1.5   (+0 -1 =1 )   95.5  -175
 - Pawny 0.1.6                       2288   1.0-1.0   (+1 -1 =0 )   95.9   -41
 - Bearded N44.2 64-bit              2282   5.0-5.0   (+2 -2 =6 )   98.7   -50
 - Glass 1.2                         2280   2.0-1.0   (+1 -0 =2 )   98.7   +22
 - Rhetoric Lite                     2277   0.5-1.5   (+0 -1 =1 )   98.4  -193
 - OBender 03.2016 64-bit            2214   8.5-1.5   (+7 -0 =3 )  100.0  +137
 - Isa 1.9.63 64-bit                 2183   7.0-3.0   (+7 -3 =0 )  100.0   +30
 - Dorpsgek Cosmopolitan 2 64-bit    2151   9.5-0.5   (+9 -0 =1 )  100.0  +267
 - Napoleon 1.7 64-bit               2124   4.0-2.0   (+4 -2 =0 )  100.0   -55


Created in 2005-2013 by CCRL team
Last games added on November 18, 2017