CCRL 40/40
Downloads and Statistics
December 10, 2019
Testing summary:
Total: 1'104'091 games
played by 2'573 programs
150964 CPU days (X2 4600+)

White wins: 382'628 (34.7%)
Black wins: 284'145 (25.7%)
Draws: 437'318 (39.6%)
White score: 54.5%

Custom engine selection

Comparing 6 engines!
6 selected engines played 60 games with each other

CCRL 40/40 Rating List — Custom engine selection (Quote)

Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern CPU.
Computed on December 10, 2019 with Bayeselo based on 1'104'091 games

Color legend: Commercial, Free, Open source, Private.
Bold font - tested with 200 games or more. Normal font - less than 200 games.

RankNameRatingScoreAverage
Opponent
DrawsGamesLOS
Elo+
1Zevra 2.1.2 r248 64-bit2398+28−2850.9%−5.826.3%464 
87.6%
 Zevra 2.1.1 r216 64-bit2379+17−1750.8%−7.425.8%1222
100.0%
 Zevra 1.8.6 r672 64-bit2269+21−2150.9%−9.925.9%862
91.6%
 Zevra 1.8.5 r664 64-bit2244+29−2955.5%−39.324.1%453
66.4%
 Zevra 1.8.4 r650 64-bit2235+26−2647.4%+22.728.3%515
98.9%
 Zevra 1.8.2 r612 64-bit2189+29−2945.1%+34.928.2%412
 

Results matrix

Custom engine selection
#NameElo123456
1Zevra 2.1.2 r248 64-bit2398      
2Zevra 2.1.1 r216 64-bit2379  43 − 17
+32−6=22
+32
   
3Zevra 1.8.6 r672 64-bit2269 17 − 43
+6−32=22
−32
    
4Zevra 1.8.5 r664 64-bit2244      
5Zevra 1.8.4 r650 64-bit2235      
6Zevra 1.8.2 r612 64-bit2189      
Performance color legend:
(Only pairs with at least 30 games)
-120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120

LOS matrix

Custom engine selection
#NameElo123456
1Zevra 2.1.2 r248 64-bit2398 87.6100.0100.0100.0100.0
2Zevra 2.1.1 r216 64-bit237912.4 100.0100.0100.0100.0
3Zevra 1.8.6 r672 64-bit22690.00.0 91.697.5100.0
4Zevra 1.8.5 r664 64-bit22440.00.08.4 66.499.5
5Zevra 1.8.4 r650 64-bit22350.00.02.533.6 98.9
6Zevra 1.8.2 r612 64-bit21890.00.00.00.51.1 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

Number of connecting games matrix

Custom engine selection
#NameElo123456
1Zevra 2.1.2 r248 64-bit2398 436247428478
2Zevra 2.1.1 r216 64-bit2379436 662176254262
3Zevra 1.8.6 r672 64-bit2269247662 309266323
4Zevra 1.8.5 r664 64-bit224442176309 9064
5Zevra 1.8.4 r650 64-bit22358425426690 336
6Zevra 1.8.2 r612 64-bit21897826232364336 
Number of connecting games color legend:
0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000

Percentage of connecting games matrix

Custom engine selection
#NameElo123456
1Zevra 2.1.2 r248 64-bit2398 25.918.64.68.68.9
2Zevra 2.1.1 r216 64-bit237925.9 31.810.514.616.0
3Zevra 1.8.6 r672 64-bit226918.631.8 23.519.325.4
4Zevra 1.8.5 r664 64-bit22444.610.523.5 9.37.4
5Zevra 1.8.4 r650 64-bit22358.614.619.39.3 36.2
6Zevra 1.8.2 r612 64-bit21898.916.025.47.436.2 
Percentage of connecting games color legend:
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100

Score with 94 common opponents

Custom engine selection
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.1.1
r216
64-bit
Zevra
1.8.6
r672
64-bit
Zevra
1.8.5
r664
64-bit
Zevra
1.8.4
r650
64-bit
Zevra
1.8.2
r612
64-bit
Delocto 0.6 64-bit257625%
2.5/10
0%
0/4
    
Bagatur 1.5g 64-bit249610%
1/10
32%
13/40
    
Drosophila 1.5.1 64-bit2478 0%
0/4
  20%
2/10
 
Bumblebee 1.0.36898e1 64-bit2445 45%
4.5/10
  25%
1/4
 
Axolotl 1.8 64-bit244445%
4.5/10
33%
2/6
    
Eeyore 1.52 64-bit2444 42%
2.5/6
  0%
0/1
 
Mephisto Gideon Professional244445%
4.5/10
19%
1.5/8
    
Teki 2 64-bit244038%
1.5/4
25%
0.5/2
    
Nemeton 1.6243840%
4/10
58%
3.5/6
    
Tunguska 1.1 64-bit243725%
1/4
42%
8.5/20
    
Bearded N44.5 64-bit243635%
3.5/10
46%
5.5/12
    
Taltos rev118 64-bit2435 50%
1/2
 12%
0.5/4
25%
0.5/2
 
Snitch 1.6.2 64-bit243250%
5/10
38%
3/8
    
PostModernist 10162419 75%
4.5/6
56%
4.5/8
   
Nemeton 1.72418  50%
1.5/3
17%
5.5/32
  
RomiChess P3n 64-bit2415 28%
5.5/20
31%
2.5/8
   
Gaia 3.5 64-bit241155%
5.5/10
42%
2.5/6
    
Ifrit m1.8 64-bit2411 33%
2/6
  0%
0/1
 
Jonesy 1.0 64-bit2409 50%
2/4
 50%
4/8
  
KnightDreamer 3.3240260%
6/10
70%
7/10
    
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.1.1
r216
64-bit
Zevra
1.8.6
r672
64-bit
Zevra
1.8.5
r664
64-bit
Zevra
1.8.4
r650
64-bit
Zevra
1.8.2
r612
64-bit
Patzer 3.80240055%
5.5/10
50%
1/2
75%
6/8
   
Popochin 4.1 64-bit2393100%
4/4
29%
3.5/12
 38%
1.5/4
  
Amateur 2.82239130%
3/10
67%
4/6
25%
2/8
   
Galjoen 0.39 64-bit2386 57%
8/14
23%
2.5/11
   
Ares GB 64-bit238550%
2/4
42%
22/52
28%
8.5/30
   
Jazz 721 64-bit238470%
7/10
 38%
3/8
   
Barbarossa 0.6.0 64-bit237375%
3/4
75%
1.5/2
    
Jumbo 0.5.3 64-bit2370 67%
4/6
38%
3/8
  25%
1/4
Waxman 2017237038%
1.5/4
50%
6/12
25%
0.5/2
 12%
0.5/4
 
Isa 2.0.83 64-bit236450%
2/4
45%
4.5/10
    
Topple 0.1.1 64-bit236350%
5/10
   22%
6.5/30
 
Isa 2.0.64 64-bit236145%
4.5/10
54%
6.5/12
27%
4/15
0%
0/4
 25%
1/4
Plisk 0.2.7d 64-bit235855%
5.5/10
38%
3/8
44%
3.5/8
  12%
0.5/4
RomiChess P3m 64-bit2354 25%
1.5/6
   38%
1.5/4
Dirty 0.99z2352 58%
3.5/6
   25%
1/4
KnightX 1.94 64-bit235165%
6.5/10
75%
3/4
    
Popochin 4.0 64-bit2335    38%
1.5/4
38%
1.5/4
EveAnn 1.71233430%
3/10
 31%
2.5/8
   
FireFly 2.7.2 64-bit2329 50%
7/14
35%
3.5/10
50%
2/4
50%
4/8
19%
1.5/8
Amundsen 0.802327    44%
3.5/8
50%
2/4
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.1.1
r216
64-bit
Zevra
1.8.6
r672
64-bit
Zevra
1.8.5
r664
64-bit
Zevra
1.8.4
r650
64-bit
Zevra
1.8.2
r612
64-bit
Googleplex Starthinker 1.4 64-bit232060%
6/10
73%
36.5/50
    
EveAnn 1.722319 58%
3.5/6
20%
3/15
62%
2.5/4
50%
2/4
44%
3.5/8
KnightX 1.93 64-bit2319 62%
2.5/4
 55%
5.5/10
  
Gibbon 2.69a 64-bit2318    25%
2/8
38%
1.5/4
KnightX 1.922316    44%
3.5/8
50%
2/4
Asymptote 0.2.0 64-bit2313  25%
0.5/2
42%
2.5/6
  
Averno 0.812312 75%
4.5/6
38%
12/32
 31%
2.5/8
62%
2.5/4
RubiChess 0.7 64-bit230460%
6/10
42%
2.5/6
12%
1/8
  50%
4/8
Ant 2006-F230265%
6.5/10
 50%
4/8
 31%
2.5/8
62%
2.5/4
Natwarlal 0.142301    31%
2.5/8
25%
1/4
Anechka 0.082299    100%
1/1
25%
1/4
Fischerle 0.9.80 SE 64-bit2298    44%
3.5/8
62%
2.5/4
CT800 1.34 64-bit2296 69%
5.5/8
 35%
3.5/10
  
Absolute Zero 2.4.7.2 64-bit2294    38%
1.5/4
38%
1.5/4
Matilde 2008 64-bit229160%
6/10
83%
5/6
44%
3.5/8
   
Invictus r228 64-bit229062%
2.5/4
55%
5.5/10
75%
1.5/2
 25%
1.5/6
 
Chaturanga 2.4.3228980%
8/10
50%
3/6
62%
5/8
   
AliChess 4.252284 42%
2.5/6
69%
5.5/8
   
Kingfisher 1.0 64-bit2279 58%
3.5/6
100%
2/2
65%
6.5/10
  
Ayito 0.2.994226365%
6.5/10
75%
4.5/6
38%
3/8
33%
4/12
 38%
1.5/4
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.1.1
r216
64-bit
Zevra
1.8.6
r672
64-bit
Zevra
1.8.5
r664
64-bit
Zevra
1.8.4
r650
64-bit
Zevra
1.8.2
r612
64-bit
CT800 1.30 64-bit2255 67%
4/6
  59%
9.5/16
 
Exacto 0.e 64-bit2251 50%
3/6
44%
14/32
  62%
2.5/4
RattateChess 1.0 Nosferatu2251 50%
3/6
55%
17.5/32
  50%
2/4
Beowulf 2.4a 64-bit2249 67%
4/6
   50%
2/4
Mango Paola Ajedrez 4.12247 83%
5/6
56%
4.5/8
 44%
3.5/8
 
Weini 0.0.23 64-bit2240  67%
21.5/32
42%
17/40
  
Buzz 0.08 64-bit2229 92%
5.5/6
75%
6/8
  0%
0/4
Dolphin 1.0 64-bit2229 100%
6/6
62%
20/32
50%
6/12
50%
4/8
50%
2/4
RamJet 0.13222790%
9/10
75%
4.5/6
56%
4.5/8
 56%
4.5/8
38%
1.5/4
Tiny Chess 1.46 64-bit2224 85%
8.5/10
48%
15.5/32
50%
2/4
20%
2/10
 
Robocide 20170718 64-bit2220  69%
22/32
50%
2/4
62%
5/8
50%
2/4
Joker2 0.7.7 64-bit2217  0%
0/2
62%
2.5/4
64%
9/14
 
Uralochka 1.1b2217    100%
1/1
38%
1.5/4
CT800 1.12 64-bit2216  50%
4/8
 31%
2.5/8
56%
4.5/8
OBender 03.2016 64-bit2214 75%
4.5/6
66%
21/32
 38%
3/8
38%
1.5/4
Adam 3.32210    69%
5.5/8
75%
3/4
Neurosis 2.32210 100%
6/6
   25%
1/4
Betsabe II 1.09c2208    44%
3.5/8
75%
3/4
Baislicka 1.0 64-bit2205   50%
2/4
50%
2/4
 
Latista (Sinobyl) 1.52204 25%
1.5/6
  56%
4.5/8
38%
1.5/4
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.1.1
r216
64-bit
Zevra
1.8.6
r672
64-bit
Zevra
1.8.5
r664
64-bit
Zevra
1.8.4
r650
64-bit
Zevra
1.8.2
r612
64-bit
Dorpsgek Eve's Temptation 64-bit2198  66%
21/32
 50%
1/2
37%
18.5/50
Dorpsgek Dillinger 64-bit2194    38%
1.5/4
48%
11.5/24
GopherCheck 0.2.3 64-bit2190 75%
4.5/6
31%
2.5/8
 82%
11.5/14
62%
2.5/4
NagaSkaki 5.122186    56%
4.5/8
0%
0/4
Prophet 2.0 64-bit2182    44%
3.5/8
38%
1.5/4
BlackBishop 0.472181    75%
6/8
100%
2/2
Asymptote 0.1.8 64-bit2176 92%
5.5/6
44%
3.5/8
66%
26.5/40
  
Isa 1.9.51 64-bit2172    69%
5.5/8
50%
2/4
Embla 2.0.0 64-bit2171 75%
27/36
   50%
5/10
Clever Girl r185 64-bit2169 88%
3.5/4
  75%
1.5/2
50%
2/4
Chesley r323 64-bit2159 92%
5.5/6
  56%
4.5/8
 
Embla 1.0.2 64-bit2110    65%
6.5/10
44%
3.5/8
Hedgehog 1.82 64-bit2096    75%
1.5/2
88%
10.5/12
Detroid 0.9.0 64-bit2092  72%
21.5/30
82%
33/40
  
Score color legend:
(Only pairs with at least 30 games)
0% 5% 10% 15% 20% 25% 30% 35% 40% 45% 50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 100%

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Results table
Performance table
Score table
LOS table
Proportion of draws
Number of games
Number of connecting games
Percentage of connecting games
Score with common opponents
Score with all opponents
Performance with common opponents
Performance with all opponents
LOS with common opponents
LOS with all opponents

Maximum size of cross-tables (from 2 to 100):
Limit crosstables to engines in Elo range: to
Match length (Minimum number of games to highlight with color):

Cross-tables show only best version of each engine
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Reference rating list:
Recalibrate:
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  Recalibrate current list to reference using selected engines only
  Recalibrate current list to reference using all common engines


Created in 2005-2013 by CCRL team
Last games added on December 10, 2019