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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Rybka 2.2 64-bit 4CPU (2972+20
−19
)Quote
Author: Vasik Rajlich (USA) Link: Homepage
Information: There is some debate in the chess community about whether or not early versions of the Rybka engine contain parts of Fruit code
This is one of the 26 Rybka versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerf
–   ChessBrainVB 3.68 4CPU3121+26
−26
(+149)5.5 − 10.5
(+3−8=5)
34.4%
5.5 / 16
0.0%
+42
= 0 0 = 0 0 0 = 1 1 0 0 0 = = 1
–   Topple 0.7.5 64-bit 4CPU3063+28
−28
(+91)5.5 − 14.5
(+1−10=9)
27.5%
5.5 / 20
0.0%
−45
= = 0 0 = = 0 0 = 1 0 0 = 0 = 0 = = 0 0
–   Defenchess 1.1f 64-bit 4CPU3063+18
−18
(+91)7.5 − 12.5
(+3−8=9)
37.5%
7.5 / 20
0.0%
+15
= = = 0 = 0 0 = = = 0 1 0 0 0 1 1 0 = =
–   Pirarucu 2.9.5 64-bit 4CPU3023+33
−33
(+51)4.5 − 7.5
(+3−6=3)
37.5%
4.5 / 12
0.6%
−37
0 1 0 = = 0 0 1 0 = 0 1
–   Rybka 2.1 64-bit 4CPU2996+29
−29
(+24)16 − 14
(+6−4=20)
53.3%
16.0 / 30
8.8%
+40
= = 1 = 1 = = = 1 0 = = = = 0 = = = 1 = = = 0 1 = = 0 1 = =
–   Stockfish 1.5.1 64-bit 4CPU2967+25
−24
(−5)30.5 − 33.5
(+14−17=33)
47.7%
30.5 / 64
62.4%
−17
= = 0 1 = = 0 0 = 0 = 0 = 0 0 = 1 = 1 0 = = 1 = 1 = = = 1 = 1 = 0 = = = 1 0 = = 1 1 = = 0 1 = = = 1 0 0 1 = = = = 1 = 0 0 0 0 =
–   EXchess 7.88b 64-bit 4CPU2955+29
−29
(−17)5 − 5
(+2−2=6)
50.0%
5.0 / 10
82.6%
−17
1 0 1 = = = = = = 0
–   Zap!Chess Zanzibar 64-bit 4CPU2946+23
−23
(−26)31 − 29
(+17−15=28)
51.7%
31.0 / 60
95.9%
−14
0 = = = = 1 0 0 = = 1 1 0 1 = 1 = = 0 1 = = 0 0 = 0 = 0 0 1 = = 0 0 1 0 = 1 1 = 1 = = 0 1 1 = = = = = 1 = 0 = 1 1 1 = =
–   Stockfish 1.4 64-bit 4CPU2946+17
−17
(−26)66 − 57
(+37−28=58)
53.7%
66.0 / 123
98.3%
−3
= 1 0 = = 1 0 = 0 = 1 = = = 1 = = 1 = 0 = 1 = = = 1 1 0 0 = 0 = 1 = = 0 1 0 1 = 1 0 0 0 1 0 = 1 1 0 = 1 1 = = 1 = 0 = = 1 = = = = 0 = = 1 1 1 1 0 = 0 = 0 = = 0 1 = 1 = 1 = = 1 = 0 0 = 0 = 1 = = 0 1 0 = 1 0 1 1 = = = = = 1 = = = 1 1 1 0 0 = 1 = =
–   Thinker 5.4c Inert 64-bit 4CPU2921+15
−15
(−51)15.5 − 16.5
(+5−6=21)
48.4%
15.5 / 32
100.0%
−61
= = = = = 0 1 1 = = = = = 1 = 0 = = 1 0 1 0 = = 0 0 = = = = = =
–   Toga II 1.4.1SE 4CPU2902+13
−13
(−70)17.5 − 14.5
(+10−7=15)
54.7%
17.5 / 32
100.0%
−40
= = = = 0 = 0 1 0 = = 1 0 1 1 0 = = = 1 = = = 1 = 1 0 1 = 1 0 1
–   Glaurung 2.2 64-bit 4CPU2894+16
−16
(−78)19 − 13
(+13−7=12)
59.4%
19.0 / 32
100.0%
−18
1 = 0 1 1 1 = 0 1 0 = 0 1 = 1 1 = 1 = 0 1 0 1 = = = 1 = 1 = = 0
–   Bright 0.4a 4CPU2894+15
−15
(−78)17 − 15
(+12−10=10)
53.1%
17.0 / 32
100.0%
−54
= 1 0 1 = = = 1 0 0 = 0 = 0 = 1 0 1 0 1 = = 0 1 1 1 1 1 0 1 0 =
–   Hiarcs 11.1 4CPU2875+17
−17
(−97)25.5 − 9.5
(+19−3=13)
72.9%
25.5 / 35
100.0%
+51
= = = 1 0 0 = 1 = 1 1 1 1 1 1 = = 1 1 1 1 = = = 1 1 1 1 = 1 = 1 0 = 1
–   Naum 2.1 64-bit 4CPU2863+21
−21
(−109)23 − 9
(+15−1=16)
71.9%
23.0 / 32
100.0%
+25
= 1 = 0 1 = = 1 = = = 1 = 1 = 1 1 1 = 1 = 1 1 = = 1 1 1 = = = 1
–   Igel 1.9.0 64-bit 4CPU2847+31
−32
(−125)11 − 5
(+9−3=4)
68.8%
11.0 / 16
100.0%
+8
0 1 0 0 1 1 1 1 = = 1 1 = 1 1 =
–   Loop 13.6 (Loop 2007) 64-bit 4CPU2836+19
−19
(−136)25.5 − 8.5
(+18−1=15)
75.0%
25.5 / 34
100.0%
+21
1 = = 1 1 = = = 1 1 1 1 1 = = = 1 = 1 1 = 1 = 1 1 0 = = 1 = 1 = 1 1
–   Deep Shredder 10 64-bit 4CPU2830+17
−17
(−142)25 − 6
(+21−2=8)
80.6%
25.0 / 31
100.0%
+80
1 1 1 0 = 1 1 = = 0 1 1 1 1 1 1 = 1 = 1 1 = = 1 1 = 1 1 1 1 1
–   Deep Fritz 10 4CPU2829+20
−20
(−143)24.5 − 5.5
(+19−0=11)
81.7%
24.5 / 30
100.0%
+73
= 1 = 1 = 1 1 = = = 1 1 1 = 1 1 1 1 1 1 = 1 = 1 1 1 1 = 1 =
–   Deep Junior 10 4CPU2801+14
−14
(−171)26 − 5
(+23−2=6)
83.9%
26.0 / 31
100.0%
+97
1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 0 1 1 1 = = 1 1 = = 1 = = 1 1 1
–   Glaurung 1.2.1 64-bit 4CPU2764+19
−19
(−208)26 − 6
(+21−1=10)
81.3%
26.0 / 32
100.0%
+11
1 1 = = 1 0 1 1 1 1 1 = 1 = 1 1 1 = 1 1 = = 1 = 1 1 1 1 1 = = 1
–   Toga II 1.2.1a 32-bit2759+12
−12
(−213)23 − 7
(+17−1=12)
76.7%
23.0 / 30
100.0%
−44
= 1 = 1 = 1 1 1 1 0 = = 1 = = 1 1 1 = 1 = 1 1 1 = = 1 1 1 =
–   Crafty 23.0 64-bit 4CPU2757+18
−18
(−215)25.5 − 6.5
(+20−1=11)
79.7%
25.5 / 32
100.0%
−10
1 = 1 = 1 1 1 1 1 = = = 1 0 1 = 1 = 1 1 1 = = = 1 = 1 1 1 1 1 1
–   Spike 1.2 Turin2744+7
−7
(−228)26 − 4
(+22−0=8)
86.7%
26.0 / 30
100.0%
+45
1 1 1 = 1 1 = = 1 1 1 1 = = 1 1 1 1 1 = 1 1 = 1 = 1 1 1 1 1
–   Scorpio 2.0 32-bit 4CPU2730+24
−24
(−242)25.5 − 5.5
(+21−1=9)
82.3%
25.5 / 31
100.0%
−8
1 1 0 1 = = 1 1 1 1 1 1 1 1 1 = 1 = 1 1 1 = = = 1 1 = = 1 1 1
–   Scorpio 2.1 64-bit 4CPU2717+27
−27
(−255)25 − 7
(+20−2=10)
78.1%
25.0 / 32
100.0%
−59
1 = 1 = 1 = 1 1 1 1 = 1 = = 1 = 1 1 1 = 1 0 = 1 1 1 1 1 1 1 = 0

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