CCRL 40/4
Downloads and Statistics
September 14, 2019
Testing summary:
Total: 2'097'576 games
played by 2'442 programs
28220 CPU days (X2 4600+)

White wins: 814'639 (38.8%)
Black wins: 658'954 (31.4%)
Draws: 623'983 (29.7%)
White score: 53.7%

Engine Details

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Butterfly 0.5 64-bit in CCRL 40/4, 2019-09-14
Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 4 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 1.5 minutes on a modern Intel CPU.
Tested by CCRL team, 2005-2019, http://computerchess.org.uk/ccrl/404/

CCRL 40/4 main list:
Butterfly 0.5 64-bit has no rank with rating of 1614 Elo points (+26 -26),
based on 533 games: 180 wins, 142 losses and 211 draws
Score: 53.6%, Average opponent: −8.9, Draws: 39.6%


Pairwise results:
     Opponent                         Elo     Score                  LOS   Perf
 - Fortress 1.62                      2135   0.5-24.5  (+0 -24=1 )    0.0   -78
 - IACH 0.56z                         1916   5.0-20.0  (+0 -15=10)    0.0  +105
 - Macromix 2.01                      1800  11.0-20.0  (+7 -16=8 )    0.0   +82
 - Laurifer 1.0                       1751  12.5-12.5  (+7 -7 =11)    0.0  +137
 - Adamant 1.7                        1735   9.0-13.0  (+6 -10=6 )    0.0   +52
 - RumbleMinze 1.0.33                 1706  10.0-15.0  (+5 -10=10)    0.0   +27
 - Pooky 2.7                          1657  11.0-11.0  (+7 -7 =8 )    0.2   +43
 - Vapor 0.01r12                      1643   9.5-11.5  (+3 -5 =13)    2.2    +2
 - Kitteneitor 0.12.1                 1605   9.0-13.0  (+4 -8 =10)   67.3   -67
 - Zotron 4.4.6                       1593  11.0-12.0  (+5 -6 =12)   93.4   -39
 - Damas 9                            1581  13.5-6.5   (+10-3 =7 )   98.5   +74
 - Needle 0.531                       1581  10.5-12.5  (+4 -6 =13)   99.0   -54
 - Vajolet 0.4.1                      1513  15.0-8.0   (+11-4 =8 )  100.0     0
 - Exacto 0.d                         1507  16.5-8.5   (+11-3 =11)  100.0   -10
 - Piranha 0.5                        1501  18.0-6.0   (+15-3 =6 )  100.0   +65
 - Tarrasch Toy Engine 0.906          1493  12.5-9.5   (+8 -5 =9 )  100.0   -81
 - APILChess 1.05r1b                  1483  14.0-9.0   (+5 -0 =18)  100.0   -83
 - Roque 1.1                          1471  18.0-5.0   (+14-1 =8 )  100.0   +43
 - Blikskottel 0.8                    1460  15.0-4.0   (+12-1 =6 )  100.0   +53
 - Nero 6.1                           1448  15.0-7.0   (+10-2 =10)  100.0   -55
 - Eden 0.0.13                        1406  17.0-6.0   (+12-1 =10)  100.0   -55
 - Numpty Omega                       1380  15.0-7.0   (+10-2 =10)  100.0  -125
 - Virutor Chess 1.1                  1364  17.0-6.0   (+14-3 =6 )  100.0   -80


Created in 2005-2013 by CCRL team
Last games added on September 14, 2019