CCRL 40/15
Downloads and Statistics
February 27, 2021
Testing summary:
Total: 1'220'404 games
played by 2'798 programs

White wins: 419'286 (34.4%)
Black wins: 308'460 (25.3%)
Draws: 492'658 (40.4%)
White score: 54.5%

Engine Details

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Rybka 1.1 32-bit (2855+17
−17		)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
–   Cheng 4.39 64-bit2918+10
−11		(+63)4.5 − 5.5
(+2−3=5)		45.0%
4.5 / 10
0.0%
+39
= 0 = 1 = 1 0 0 = =
–   Rodent II 0.9.64 64-bit2914+22
−22		(+59)5 − 5
(+3−3=4)		50.0%
5.0 / 10
0.0%
+63
0 1 = = 0 1 = 0 = 1
–   ChessBrainVB 3.312914+25
−25		(+59)4.5 − 5.5
(+2−3=5)		45.0%
4.5 / 10
0.0%
+23
0 = = = 0 = 1 = 0 1
–   RubiChess 1.2.1 64-bit2907+19
−19		(+52)6.5 − 7.5
(+2−3=9)		46.4%
6.5 / 14
0.0%
+28
0 = = = = 0 = = 0 = 1 = 1 =
–   Arasan 19.0.1 64-bit2906+26
−26		(+51)2.5 − 7.5
(+0−5=5)		25.0%
2.5 / 10
0.1%
−97
= = 0 0 0 0 = 0 = =
–   Francesca MAD 0.28 64-bit2899+24
−24		(+44)3 − 11
(+1−9=4)		21.4%
3.0 / 14
0.2%
−158
= 0 0 0 0 0 0 = 0 = 0 1 = 0
–   Atlas 3.91 64-bit2897+13
−13		(+42)6.5 − 5.5
(+4−3=5)		54.2%
6.5 / 12
0.0%
+66
= 1 0 = 1 = = 1 1 0 0 =
–   Winter 0.5 64-bit2893+17
−17		(+38)7 − 7
(+3−3=8)		50.0%
7.0 / 14
0.1%
+40
= = = 0 = = = = 1 1 = 1 0 0
–   Gogobello 2.1 64-bit2889+19
−19		(+34)4.5 − 7.5
(+1−4=7)		37.5%
4.5 / 12
0.4%
−31
= = = 0 = 1 = 0 0 0 = =
–   Cheng4 0.38 64-bit2888+23
−23		(+33)4 − 6
(+1−3=6)		40.0%
4.0 / 10
1.2%
−25
= = = = 0 1 0 = 0 =
–   Rybka 2.2 32-bit2884+16
−16		(+29)11.5 − 18.5
(+2−9=19)
38.3%
11.5 / 30
0.7%
−36
= = 0 0 = = = 1 = = 0 0 = = = 0 = = = = 0 1 = 0 = 0 = 0 = =
–   Counter 3.4 64-bit2881+20
−20		(+26)6.5 − 7.5
(+1−2=11)		46.4%
6.5 / 14
2.9%
+7
= = = = = = = = 0 = 0 1 = =
–   Andscacs 0.71 64-bit2878+30
−30		(+23)3.5 − 6.5
(+1−4=5)		35.0%
3.5 / 10
9.6%
−60
= = = 0 = 0 = 0 0 1
–   Invictus r305 64-bit2878+17
−17		(+23)6 − 8
(+5−7=2)		42.9%
6.0 / 14
3.3%
−29
= 1 = 0 1 0 0 0 0 1 1 0 1 0
–   FabChess 1.13 64-bit2876+21
−21		(+21)4.5 − 5.5
(+1−2=7)		45.0%
4.5 / 10
6.4%
0
= = = 0 = 1 = = = 0
–   ChessBrainVB 3.202872+25
−25		(+17)5.5 − 4.5
(+3−2=5)		55.0%
5.5 / 10
12.9%
+44
= = 0 = 0 = = 1 1 1
–   EXchess 7.88b 64-bit2869+25
−25		(+14)5.5 − 4.5
(+3−2=5)		55.0%
5.5 / 10
18.9%
+45
= 1 0 = = = 0 1 = 1
–   Rodent II 0.9.33 64-bit2867+27
−27		(+12)3.5 − 6.5
(+2−5=3)		35.0%
3.5 / 10
22.4%
−92
0 = 1 = 0 0 0 1 = 0
–   Rybka 1.2 32-bit2867+17
−17		(+12)14 − 16
(+5−7=18)
46.7%
14.0 / 30
14.8%
−3
= = 1 = = 0 = = 1 = 0 = 0 = = = = 0 0 0 = = 1 = 1 = 1 0 = =
–   Rybka 2.1 32-bit2861+22
−22		(+6)14.5 − 15.5
(+5−6=19)
48.3%
14.5 / 30
31.6%
−3
0 = = = = 0 1 = 0 = = = 1 0 = 1 = = = = 0 = = 1 0 = = 1 = =
–   DisasterArea 1.65 64-bit2847+13
−13		(−8)6 − 4
(+4−2=4)		60.0%
6.0 / 10
77.9%
+54
1 = 0 1 0 = = 1 = 1
–   Asymptote 0.7 64-bit2844+21
−21		(−11)7.5 − 2.5
(+7−2=1)		75.0%
7.5 / 10
79.3%
+202
1 1 1 0 1 1 1 0 = 1
–   Demolito 2017-06-18 64-bit2842+25
−25		(−13)3 − 7
(+2−6=2)		30.0%
3.0 / 10
79.0%
−168
0 0 1 = 1 0 0 = 0 0
–   Wasp 1.02 64-bit2840+28
−28		(−15)3 − 7
(+0−4=6)		30.0%
3.0 / 10
81.8%
−123
= 0 = = = 0 0 0 = =
–   Weiss 1.0 64-bit2832+24
−24		(−23)9 − 7
(+6−4=6)		56.3%
9.0 / 16
93.4%
+11
1 = 1 = 0 1 0 1 = = 1 1 0 = 0 =
–   DisasterArea 1.54 64-bit2826+18
−18		(−29)5.5 − 4.5
(+4−3=3)		55.0%
5.5 / 10
99.0%
+2
0 1 = 1 0 = 0 = 1 1
–   ChessBrainVB 3.032821+25
−25		(−34)4.5 − 3.5
(+3−2=3)		56.3%
4.5 / 8
98.7%
+3
1 = = 1 1 = 0 0
–   NirvanaChess 1.6 64-bit2820+27
−27		(−35)5 − 5
(+3−3=4)		50.0%
5.0 / 10
98.3%
−35
1 = 1 = = 0 = 1 0 0
–   Rodent II 0.8.7 64-bit2808+27
−27		(−47)6 − 4
(+3−1=6)		60.0%
6.0 / 10
99.8%
+4
1 = = 1 1 = = = 0 =
–   Rybka 1.0 32-bit2786+14
−14		(−69)19 − 11
(+10−2=18)
63.3%
19.0 / 30
100.0%
+7
1 = 1 = = = 1 = 1 1 = = = 0 1 = = = = = = = = 0 1 = 1 1 1 =
–   Loop 10.32f2764+19
−19		(−91)14 − 11
(+9−6=10)		56.0%
14.0 / 25
100.0%
−55
1 0 0 = 1 0 0 1 1 1 = 1 1 = 1 = = 0 1 = = = 0 = =
–   Fruit 2.2.12743+13
−13		(−112)23 − 8
(+16−1=14)
74.2%
23.0 / 31
100.0%
+37
1 1 1 1 1 1 = = = 1 = 1 1 = = = = = 1 1 1 = 1 1 1 0 1 = = = =
–   Junior 102743+13
−13		(−112)14.5 − 11.5
(+8−5=13)		55.8%
14.5 / 26
100.0%
−81
1 0 1 0 = = 0 = 1 1 = 0 = 1 = = 1 0 = = = 1 = = = 1
–   Fritz 92742+14
−14		(−113)16.5 − 13.5
(+12−9=9)
55.0%
16.5 / 30
100.0%
−78
= = = 0 = = 1 1 0 1 1 1 0 0 0 1 1 1 1 1 = 0 = = 1 0 0 = 0 1
–   Naum 2.1 32-bit2742+20
−20		(−113)5.5 − 2.5
(+4−1=3)		68.8%
5.5 / 8
100.0%
+8
= 1 = 1 1 1 0 =
–   Hiarcs 102740+16
−16		(−115)25 − 11
(+18−4=14)
69.4%
25.0 / 36
100.0%
+13
= 1 = 0 0 1 = 1 = = 1 1 = 1 = 1 1 1 = = = 1 1 0 0 1 = 1 = 1 1 1 = 1 1 =
–   Toga II 1.1a 32-bit2730+16
−16		(−125)23.5 − 7.5
(+17−1=13)
75.8%
23.5 / 31
100.0%
+39
1 1 1 = 1 = 1 1 = 1 = 1 1 = = 1 1 = 1 = 1 = 1 = = 1 = = 1 0 1
–   Shredder 92725+17
−17		(−130)22 − 9
(+16−3=12)
71.0%
22.0 / 31
100.0%
+1
1 = 1 = = 1 = 1 1 0 1 1 = 1 = 1 = 1 = 0 1 1 = 1 = 1 = 1 1 = 0
–   Hiarcs 10 Hypermodern2717+20
−20		(−138)37.5 − 15.5
(+27−5=21)
70.8%
37.5 / 53
100.0%
−1
1 0 1 = = 1 = = 1 = = = 1 1 1 1 1 = 0 = 1 1 1 1 1 0 1 0 1 1 1 = = 1 = = = 0 = = 1 1 = 1 1 1 = 1 = 1 = 1 =
–   Ktulu 82705+9
−9		(−150)27 − 13
(+18−4=18)
67.5%
27.0 / 40
100.0%
−40
= 1 = 1 1 1 1 = 1 = 1 1 1 = = 0 1 = = = 1 = 0 = = 1 1 0 1 = = = 1 1 = 0 1 = 1 =
–   Spike 1.12689+15
−15		(−166)33 − 9
(+27−3=12)
78.6%
33.0 / 42
100.0%
+38
1 = 1 1 1 = 1 1 1 = 1 1 1 1 1 = 1 1 1 = 1 0 1 1 1 = 1 = 1 = = 1 0 1 = = 1 1 1 1 0 =
–   Zap!Chess Paderborn 32-bit2681+21
−21		(−174)24 − 6
(+19−1=10)
80.0%
24.0 / 30
100.0%
+30
1 = = 1 = 1 1 1 1 1 1 1 1 1 = 1 = 1 1 1 1 = 0 = 1 = = = 1 1
–   Junior 92676+17
−17		(−179)27 − 3
(+25−1=4)
90.0%
27.0 / 30
100.0%
+174
= 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 1
–   SmarThink 1.00 32-bit2665+15
−15		(−190)24 − 7
(+18−1=12)
77.4%
24.0 / 31
100.0%
−8
= = 1 = = 1 = 1 = 1 = 1 1 1 0 1 1 = 1 1 1 = = 1 1 1 1 = 1 1 =
–   Ktulu 7.52663+15
−15		(−192)24 − 7
(+19−2=10)
77.4%
24.0 / 31
100.0%
−3
1 1 = 1 1 1 0 1 = 1 1 1 = 1 1 1 1 1 1 1 = = 1 = 0 1 = 1 = = =
–   CM10th Xperience2660+13
−13		(−195)22 − 9
(+16−3=12)
71.0%
22.0 / 31
100.0%
−58
1 0 1 1 = 1 = = 1 = = = = = 1 1 = 0 = = = 1 0 1 1 1 1 1 1 1 1
–   Zap!Chess Reykjavik 32-bit2657+34
−35		(−198)8.5 − 2.5
(+6−0=5)		77.3%
8.5 / 11
100.0%
−29
1 1 = = = 1 1 = 1 1 =
–   Spike 1.0a2650+18
−18		(−205)18 − 11
(+13−6=10)		62.1%
18.0 / 29
100.0%
−127
0 0 1 1 1 1 = = 1 = 0 = 1 0 1 1 = 1 = = 1 = 0 0 1 = 1 1 =
–   CM10th Ogre2647+23
−23		(−208)0 − 1
(+0−1=0)		0.0%
0.0 / 1
100.0%
−INF
0
–   CM10th Magic II2643+16
−16		(−212)26.5 − 5.5
(+21−0=11)
82.8%
26.5 / 32
100.0%
+13
= 1 1 = 1 1 = = = 1 1 1 1 1 1 1 = = = 1 = 1 1 = 1 1 = 1 1 1 1 1
–   Ktulu 7.12638+18
−18		(−217)25.5 − 4.5
(+23−2=5)
85.0%
25.5 / 30
100.0%
+71
0 1 1 = 1 = 1 1 = 1 1 1 1 0 1 1 1 1 1 1 1 1 1 = 1 1 1 = 1 1
–   Slow Chess Blitz WV2.12636+11
−12		(−219)1 − 0
(+1−0=0)		100.0%
1.0 / 1
100.0%
+INF
1
–   Chess Tiger 152636+17
−17		(−219)23.5 − 6.5
(+18−1=11)
78.3%
23.5 / 30
100.0%
−29
1 1 = 1 0 = 1 1 1 = 1 1 = 1 = 1 = 1 = = 1 1 = 1 1 = 1 1 1 =
–   CM10th Warrior2635+24
−24		(−220)1 − 1
(+1−1=0)		50.0%
1.0 / 2
100.0%
−220
1 0
–   Glaurung 1.0.2 32-bit2634+17
−17		(−221)27.5 − 3.5
(+25−1=5)
88.7%
27.5 / 31
100.0%
+108
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
–   Gandalf 62634+11
−11		(−221)27 − 5
(+23−1=8)
84.4%
27.0 / 32
100.0%
+37
1 1 1 1 1 1 1 1 = = = 1 1 = 1 1 1 1 1 1 = 1 1 1 = = 1 1 1 1 0 =
–   CM10th Default2630+14
−15		(−225)25 − 5
(+22−2=6)
83.3%
25.0 / 30
100.0%
+39
1 1 1 1 0 1 1 1 1 1 1 = 1 1 1 1 = 1 1 0 1 1 1 1 1 = = = = 1
–   Ruffian 2.1.02623+13
−13		(−232)11.5 − 1.5
(+11−1=1)		88.5%
11.5 / 13
100.0%
+126
1 = 1 1 0 1 1 1 1 1 1 1 1
–   Naum 1.91 32-bit2605+15
−15		(−250)28.5 − 2.5
(+26−0=5)
91.9%
28.5 / 31
100.0%
+116
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
–   Scorpio 1.72604+32
−32		(−251)1 − 0
(+1−0=0)		100.0%
1.0 / 1
100.0%
+INF
1
–   Aristarch 4.502596+12
−12		(−259)1 − 0
(+1−0=0)		100.0%
1.0 / 1
100.0%
+INF
1
–   Chess Tiger 20042594+26
−26		(−261)23.5 − 2.5
(+21−0=5)		90.4%
23.5 / 26
100.0%
+75
= 1 1 1 1 1 1 1 1 = 1 = 1 1 1 1 1 1 1 1 1 = 1 = 1 1
–   Delfi 4.62594+31
−31		(−261)1.5 − 0.5
(+1−0=1)		75.0%
1.5 / 2
100.0%
−118
1 =
–   WildCat 62593+21
−22		(−262)0.5 − 0.5
(+0−0=1)		50.0%
0.5 / 1
100.0%
−231
=
–   Pseudo 0.7c2590+13
−13		(−265)1 − 0
(+1−0=0)		100.0%
1.0 / 1
100.0%
+INF
1
–   ProDeo 1.12587+30
−30		(−268)1 − 0
(+1−0=0)		100.0%
1.0 / 1
100.0%
+INF
1
–   SOS 5.12563+13
−13		(−292)0.5 − 0.5
(+0−0=1)		50.0%
0.5 / 1
100.0%
−261
=
1221 games: 574 wins, 180 losses, 467 draws (38.2%), score: 66.1%

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Created in 2005-2013 by CCRL team
Last games added on February 27, 2021