CCRL 40/15
Downloads and Statistics
May 8, 2021
Testing summary:
Total: 1'242'291 games
played by 2'843 programs

White wins: 425'658 (34.3%)
Black wins: 312'703 (25.2%)
Draws: 503'930 (40.6%)
White score: 54.5%

Engine Details

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Stockfish 1.9.1 64-bit 4CPU (3114+22
−22
)Quote
Authors: Marco Costalba, Joona Kiiski, Stockfish team members Links: List of Authors, Homepage, Development Versions, Testing Framework
Stockfish was originally based on Glaurung by Tord Romstad.
This is one of the 123 Stockfish versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerf
–   Arasan 22.2 64-bit 4CPU3230+28
−28
(+116)5.5 − 10.5
(+1−6=9)
34.4%
5.5 / 16
0.0%
+26
0 = = = 0 0 = = 0 1 = = 0 0 = =
–   NirvanaChess 2.5 64-bit 4CPU3213+43
−43
(+99)4 − 6
(+1−3=6)
40.0%
4.0 / 10
0.0%
+43
= = 1 = = 0 0 = = 0
–   Vajolet2 2.7 64-bit 4CPU3180+24
−24
(+66)6.5 − 13.5
(+1−8=11)
32.5%
6.5 / 20
0.0%
−35
= 0 0 = 1 0 0 = 0 0 = 0 = = = = 0 = = =
–   Houdini 1.5a 64-bit 4CPU3179+17
−17
(+65)16.5 − 32.5
(+4−20=25)
33.7%
16.5 / 49
0.0%
−32
0 1 0 0 = = = = = 0 0 = = 0 = 0 0 1 0 0 1 0 = = = 0 = = 1 = = 0 0 = 0 = = = = = = = 0 = 0 0 0 0 =
–   RubiChess 1.5 64-bit 4CPU3160+29
−29
(+46)9.5 − 5.5
(+5−1=9)
63.3%
9.5 / 15
0.6%
+124
= = = 1 = 1 = = 1 0 = = = 1 1
–   Rybka 4 64-bit 4CPU3145+10
−10
(+31)33 − 43
(+15−25=36)
43.4%
33.0 / 76
0.5%
−7
= 0 = 0 0 1 = = 0 1 0 = = = 0 = 0 0 = = = 0 0 = 0 = = 1 = 0 = = = 0 = 1 0 = 1 = = 1 = 1 1 0 = = 0 0 = = 0 1 = = 0 = 1 0 = 1 1 0 1 0 = = 0 1 0 1 0 = = =
–   Rybka 4.1 64-bit 4CPU3142+9
−9
(+28)11.5 − 20.5
(+3−12=17)
35.9%
11.5 / 32
0.9%
−56
= = = = 0 0 0 = = 0 0 1 0 = 1 = 0 = 0 0 = = 0 1 0 = 0 = = = = =
–   Arasan 20.4.1 64-bit 4CPU3118+26
−25
(+4)5.5 − 4.5
(+3−2=5)
55.0%
5.5 / 10
41.3%
+34
= = = = = 1 0 1 0 1
–   Stockfish 1.8 64-bit 4CPU3106+18
−18
(−8)15 − 18
(+3−6=24)
45.5%
15.0 / 33
70.4%
−32
= = = = = = = = = 1 1 = = = 0 1 0 = = 0 = = = = = 0 = = 0 0 = = =
–   Winter 0.7 64-bit 4CPU3105+25
−26
(−9)13 − 11
(+8−6=10)
54.2%
13.0 / 24
68.8%
+18
0 1 0 = = 0 = 1 1 1 0 1 = 1 = 1 = = = = = 0 1 0
–   Critter 0.90 64-bit 4CPU3076+31
−31
(−38)19.5 − 14.5
(+9−4=21)
57.4%
19.5 / 34
97.9%
+3
0 = 1 = = = = 0 1 = 1 = 0 = 1 = 1 1 = = = = = = = = 1 = = 0 = 1 = 1
–   Naum 4.2 64-bit 4CPU3059+10
−10
(−55)29.5 − 18.5
(+17−6=25)
61.5%
29.5 / 48
100.0%
+13
= = = = = 0 = = 0 = 1 1 0 1 = = = 1 1 1 = 1 1 1 = = = 1 = = 1 1 1 = = 0 = = = 0 = 0 = 1 1 1 1 =
–   Deep Shredder 12 64-bit 4CPU3016+10
−10
(−98)26.5 − 13.5
(+18−5=17)
66.3%
26.5 / 40
100.0%
+4
1 1 = = = 1 1 = = 0 1 = 0 1 0 1 = 0 1 1 1 1 1 = = = = 1 = = 1 1 = 1 = 1 0 1 = =
–   Zappa Mexico II 64-bit 4CPU2967+10
−10
(−147)46.5 − 19.5
(+29−2=35)
70.5%
46.5 / 66
100.0%
−27
1 1 = = 1 1 = 1 = 1 = = 1 1 = = 1 1 = = = 1 1 = 1 = = 1 = 1 1 = 1 = 1 1 1 1 = = = 1 = = 1 = = = = 1 = = = = 1 = 1 = 0 0 = 1 = 1 1 =
–   Deep Sjeng WC2008 64-bit 4CPU2924+13
−13
(−190)52.5 − 14.5
(+40−2=25)
78.4%
52.5 / 67
100.0%
0
1 = = 1 0 1 = 1 = 1 = 1 = = = 1 = = = = 1 1 1 1 1 1 1 = 1 1 = 1 = = = = = 1 1 1 1 1 1 = = 1 0 1 1 1 1 1 1 1 = 1 = 1 1 1 1 1 1 1 = = 1
–   Thinker 5.4c Inert 64-bit 4CPU2921+15
−15
(−193)63.5 − 12.5
(+52−1=23)
83.6%
63.5 / 76
100.0%
+48
1 1 1 1 1 1 = 1 1 1 1 1 = 1 1 1 1 1 = 1 1 = 1 1 1 1 = 1 1 1 = = = 1 = 1 1 1 = 1 1 = = 1 1 1 = 1 = 1 1 1 = 1 = 1 1 1 1 = 1 1 = 1 = = 1 1 0 1 = 1 = = 1 1
–   Bright 0.5c 4CPU2889+23
−23
(−225)40.5 − 8.5
(+33−1=15)
82.7%
40.5 / 49
100.0%
+8
= 1 = 1 1 1 1 = 1 1 = 1 1 = 1 1 = 1 1 1 1 1 1 1 1 1 1 1 0 1 = 1 = = = 1 1 = 1 1 = 1 = 1 1 1 = 1 =

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Created in 2005-2013 by CCRL team
Last games added on May 8, 2021