CCRL 40/4
Downloads and Statistics
November 18, 2017
Testing summary:
Total: 1'579'577 games
played by 1'866 programs
21113 CPU days (X2 4600+)

White wins: 617'996 (39.1%)
Black wins: 503'684 (31.9%)
Draws: 457'897 (29.0%)
White score: 53.6%

Engine Details

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Rybka 2.3 LK 32-bit (2897+24
−24
)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 25 Rybka versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerf
–   Hiarcs 112790+15
−15
(−107)20 − 12
(+15−7=10)
62.5%
20.0 / 32
100.0%
−22
1 = 1 0 0 1 = 1 1 0 1 = = = = 1 = = = 1 1 1 1 1 0 0 1 0 0 = 1 1
–   Toga II 1.3.12772+10
−9
(−125)22.5 − 9.5
(+17−4=11)
70.3%
22.5 / 32
100.0%
+11
1 = 1 = 1 1 = 1 1 0 = 1 = 1 = = 1 = 0 = = 1 0 1 1 1 1 1 1 1 = 0
–   Toga II 1.2.1a 32-bit2762+9
−9
(−135)25 − 7
(+23−5=4)
78.1%
25.0 / 32
100.0%
+97
1 1 1 1 = 1 1 0 1 = 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 1 = 1 = 0 0
–   Hiarcs X502756+16
−16
(−141)21.5 − 10.5
(+16−5=11)
67.2%
21.5 / 32
100.0%
−27
= 1 1 = = 1 = 0 1 1 1 = = 1 1 = 0 1 = 0 = 1 1 1 1 = 1 0 0 = 1 1
–   Fritz 92750+11
−11
(−147)22.5 − 9.5
(+18−5=9)
70.3%
22.5 / 32
100.0%
−8
1 1 1 = 0 1 1 = 1 1 1 1 1 = 0 1 1 1 1 1 0 = 1 1 0 1 = = 0 = = =
–   Fruit 2.2.12750+18
−18
(−147)21.5 − 10.5
(+16−5=11)
67.2%
21.5 / 32
100.0%
−31
1 = = = = 1 = 1 = 1 1 0 1 1 = 1 1 = 0 1 0 0 0 = 1 1 1 = 1 = 1 1
–   Hiarcs X54 32-bit2744+16
−16
(−153)19 − 13
(+14−8=10)
59.4%
19.0 / 32
100.0%
−92
1 1 0 = 1 1 = = 0 0 0 1 1 1 1 = 1 = = = 1 0 0 = 1 1 0 = = 0 1 1
–   Naum 2.1 32-bit2738+14
−14
(−159)24.5 − 7.5
(+20−3=9)
76.6%
24.5 / 32
100.0%
+31
1 1 = 1 1 = 1 = 1 1 1 1 1 1 0 = 1 1 = 1 1 = 0 = 1 0 1 1 = 1 1 =
–   Hiarcs 102736+20
−19
(−161)23.5 − 8.5
(+20−5=7)
73.4%
23.5 / 32
100.0%
+10
0 1 1 1 0 1 = 1 1 = 1 1 1 = 1 = 1 1 1 = 1 = 1 = 1 1 1 0 1 0 0 1
–   Spike 1.2 Turin2731+6
−6
(−166)18.5 − 12.5
(+13−7=11)
59.7%
18.5 / 31
100.0%
−102
1 1 = = = 0 1 0 = 1 = 1 1 1 0 1 0 1 1 0 = = 0 = = 0 1 1 = 1 =
–   Chess Tiger 2007.12713+8
−8
(−184)15.5 − 5.5
(+12−2=7)
73.8%
15.5 / 21
100.0%
−21
1 1 1 = = = 1 1 1 1 1 = 1 = = 1 1 0 = 0 1
–   Naum 2.0 32-bit2700+8
−8
(−197)26 − 6
(+23−3=6)
81.3%
26.0 / 32
100.0%
+48
1 = 1 1 1 = 0 1 = 1 1 = = 1 1 1 = 1 1 0 1 1 1 1 1 1 0 1 1 1 1 1
–   Chess Tiger 20072700+11
−11
(−197)26.5 − 3.5
(+23−0=7)
88.3%
26.5 / 30
100.0%
+103
1 = 1 = = 1 1 1 = 1 1 1 1 1 = 1 1 1 1 1 1 = 1 = 1 1 1 1 1 1
–   Glaurung 1.2.1 32-bit2657+10
−10
(−240)23.5 − 8.5
(+21−6=5)
73.4%
23.5 / 32
100.0%
−56
1 = = 1 1 1 = 0 1 1 0 = 0 1 1 = 1 1 0 1 1 0 1 1 1 1 1 1 0 1 1 1
–   Scorpio 1.812648+14
−14
(−249)51 − 13
(+43−5=16)
79.7%
51.0 / 64
100.0%
−30
1 0 1 1 1 1 = 1 1 0 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 = 1 0 = 1 = 1 = 1 1 0 = 1 1 = 1 1 1 = 1 = 1
–   Scorpio 1.912641+12
−13
(−256)23.5 − 7.5
(+20−4=7)
75.8%
23.5 / 31
100.0%
−65
0 1 = 1 1 1 1 1 1 = 0 = 1 1 1 0 1 1 1 = = 1 1 = 1 1 = 0 1 1 1
–   Scorpio 1.92641+13
−13
(−256)55 − 9
(+49−3=12)
85.9%
55.0 / 64
100.0%
+33
1 = 1 1 1 0 = = 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 0 1 1 1 1 1 1 1 1 1 = 1 1 1 1 1 = 1 1 1 1 = 1 1 1
–   Scorpio 1.822638+20
−20
(−259)28.5 − 3.5
(+27−2=3)
89.1%
28.5 / 32
100.0%
+101
= 0 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
–   Scorpio 1.842633+20
−20
(−264)56 − 8
(+50−2=12)
87.5%
56.0 / 64
100.0%
+39
= 1 1 1 1 1 1 1 1 = 0 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 1 1 1 = 1 = = 1 1 1 1 1 1 1 1 1
–   Scorpio 1.82624+14
−15
(−273)27 − 5
(+25−3=4)
84.4%
27.0 / 32
100.0%
+18
1 1 1 1 1 = 1 1 1 0 = 0 1 1 1 1 1 1 1 1 1 1 = 1 1 0 1 = 1 1 1 1
–   ProDeo 1.22608+10
−11
(−289)27.5 − 4.5
(+26−3=3)
85.9%
27.5 / 32
100.0%
+31
1 0 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 = 1 1 = 1 0 1 1 1 = 1 1 1 1

Rating changes by day

Rating changes with played games

Participation in the pure lists

Pure listRankRatingNumber of games
Rybka 2.3 LK 32-bit
played with current
participants of this list
Represented by
1-2-CPU    21Rybka 4.1 64-bit
32-bit    84Rybka 2.3.2a 32-bit
32-bit 1-2-CPU    84Rybka 2.3.2a 32-bit
32-bit single-CPU    84Rybka 2.3.2a 32-bit
All    21Rybka 4.1 64-bit 4CPU
Single-CPU    21Rybka 4.1 64-bit

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