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%

Custom engine selection

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

CCRL 40/15 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 15 minutes on an Intel i7-4770k.
Computed on May 8, 2021 with Bayeselo based on 1'242'291 games
Please refer to the "about" page for comments on engine inclusion

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-bit2390+19−1950.1%−0.026.8%945 
78.7%
 Zevra 2.1.1 r216 64-bit2380+17−1750.8%−7.325.9%1218
100.0%
 Zevra 1.8.6 r672 64-bit2269+21−2050.9%−9.125.9%862
90.4%
 Zevra 1.8.5 r664 64-bit2247+27−2753.7%−26.924.5%511
72.3%
 Zevra 1.8.4 r650 64-bit2235+26−2647.4%+22.928.3%515
99.1%
 Zevra 1.8.2 r612 64-bit2189+28−2845.5%+31.428.2%436
 

Results matrix

Custom engine selection
#NameElo123456
1Zevra 2.1.2 r248 64-bit2390      
2Zevra 2.1.1 r216 64-bit2380  43 − 17
+32−6=22
+31
   
3Zevra 1.8.6 r672 64-bit2269 17 − 43
+6−32=22
−31
    
4Zevra 1.8.5 r664 64-bit2247      
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-bit2390 78.7100.0100.0100.0100.0
2Zevra 2.1.1 r216 64-bit238021.3 100.0100.0100.0100.0
3Zevra 1.8.6 r672 64-bit22690.00.0 90.497.8100.0
4Zevra 1.8.5 r664 64-bit22470.00.09.6 72.399.8
5Zevra 1.8.4 r650 64-bit22350.00.02.227.7 99.1
6Zevra 1.8.2 r612 64-bit21890.00.00.00.20.9 
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-bit2390 638299150136110
2Zevra 2.1.1 r216 64-bit2380638 662176254262
3Zevra 1.8.6 r672 64-bit2269299662 309266323
4Zevra 1.8.5 r664 64-bit2247150176309 9064
5Zevra 1.8.4 r650 64-bit223513625426690 336
6Zevra 1.8.2 r612 64-bit218911026232364336 
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-bit2390 29.516.510.39.38.0
2Zevra 2.1.1 r216 64-bit238029.5 31.810.214.715.8
3Zevra 1.8.6 r672 64-bit226916.531.8 22.519.324.9
4Zevra 1.8.5 r664 64-bit224710.310.222.5 8.86.8
5Zevra 1.8.4 r650 64-bit22359.314.719.38.8 35.3
6Zevra 1.8.2 r612 64-bit21898.015.824.96.835.3 
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 106 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-bit257925%
2.5/10
0%
0/4
    
Detroid 1.0.1 64-bit255425%
1/4
12%
0.5/4
    
Bagatur 1.5g 64-bit250310%
1/10
32%
13/40
    
Drosophila 1.5.1 64-bit247950%
2/4
0%
0/4
  20%
2/10
 
Nemeton 1.81246435%
3.5/10
16%
2.5/16
    
Bumblebee 1.0.36898e1 64-bit2447 45%
4.5/10
  25%
1/4
 
Axolotl 1.8 64-bit244645%
4.5/10
33%
2/6
    
Mephisto Gideon Professional244645%
4.5/10
19%
1.5/8
    
Bearded N44.5 64-bit244235%
3.5/10
46%
5.5/12
    
Eeyore 1.52 64-bit2441 42%
2.5/6
  0%
0/1
 
Nemeton 1.6243940%
4/10
58%
3.5/6
    
Teki 2 64-bit243950%
4/8
25%
0.5/2
    
Tunguska 1.1 64-bit243946%
6.5/14
42%
8.5/20
    
Taltos rev118 64-bit2438 50%
1/2
 12%
0.5/4
25%
0.5/2
 
Snitch 1.6.2 64-bit243550%
5/10
38%
3/8
    
Nemeton 1.72419  50%
1.5/3
17%
5.5/32
  
PostModernist 10162417 75%
4.5/6
56%
4.5/8
   
Gaia 3.5 64-bit241655%
5.5/10
42%
2.5/6
    
RomiChess P3n 64-bit241425%
2/8
28%
5.5/20
31%
2.5/8
   
Ifrit m1.8 64-bit2413 33%
2/6
  0%
0/1
 
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
Jonesy 1.0 64-bit2409 50%
2/4
 50%
4/8
  
KnightDreamer 3.3239760%
6/10
70%
7/10
    
Myrddin 0.87 64-bit239653%
20/38
33%
4/12
    
Popochin 4.1 64-bit239665%
6.5/10
29%
3.5/12
 38%
1.5/4
  
Amateur 2.82239530%
3/10
67%
4/6
25%
2/8
   
Patzer 3.80239555%
5.5/10
50%
1/2
75%
6/8
   
Ares GB 1.1 64-bit239158%
11.5/20
  62%
5/8
  
Ares GB 64-bit239146%
5.5/12
42%
22/52
28%
8.5/30
   
Galjoen 0.39 64-bit2387 57%
8/14
23%
2.5/11
   
CT800 1.41 64-bit238667%
8/12
  30%
3/10
  
Jazz 721 64-bit237770%
7/10
 38%
3/8
   
Isa 2.0.83 64-bit237241%
11.5/28
45%
4.5/10
    
Jumbo 0.5.3 64-bit2371 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 2.0.64 64-bit236345%
4.5/10
54%
6.5/12
27%
4/15
0%
0/4
 25%
1/4
Plisk 0.2.7d 64-bit236255%
5.5/10
38%
3/8
44%
3.5/8
  12%
0.5/4
Topple 0.1.1 64-bit236150%
5/10
   22%
6.5/30
 
RomiChess P3m 64-bit2360 25%
1.5/6
   38%
1.5/4
Dirty 0.99z2353 58%
3.5/6
   25%
1/4
Barbarossa 0.6.0 64-bit235257%
16/28
75%
1.5/2
    
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
KnightX 1.94 64-bit235265%
6.5/10
75%
3/4
    
Jazz 840 64-bit234038%
1.5/4
   52%
16.5/32
 
Popochin 4.0 64-bit2336    38%
1.5/4
38%
1.5/4
EveAnn 1.71233530%
3/10
 31%
2.5/8
   
FoxSEE 5.3 64-bit233038%
1.5/4
  33%
6/18
  
Amundsen 0.802328    44%
3.5/8
50%
2/4
FireFly 2.7.2 64-bit232850%
1/2
50%
7/14
35%
3.5/10
50%
2/4
50%
4/8
19%
1.5/8
Googleplex Starthinker 1.4 64-bit232060%
6/10
73%
36.5/50
    
KnightX 1.93 64-bit2320 62%
2.5/4
 55%
5.5/10
  
EveAnn 1.72231975%
1.5/2
58%
3.5/6
20%
3/15
62%
2.5/4
50%
2/4
44%
3.5/8
Gibbon 2.69a 64-bit2319    25%
2/8
38%
1.5/4
KnightX 1.922316    44%
3.5/8
50%
2/4
Asymptote 0.2.0 64-bit2314  25%
0.5/2
42%
2.5/6
  
Averno 0.812314 75%
4.5/6
38%
12/32
 31%
2.5/8
62%
2.5/4
RubiChess 0.7 64-bit230260%
6/10
42%
2.5/6
12%
1/8
  50%
4/8
Anechka 0.082301    100%
1/1
25%
1/4
Ant 2006-F230165%
6.5/10
 50%
4/8
 31%
2.5/8
62%
2.5/4
Fischerle 0.9.80 SE 64-bit2300    44%
3.5/8
62%
2.5/4
Natwarlal 0.142298    31%
2.5/8
25%
1/4
Absolute Zero 2.4.7.2 64-bit2296    38%
1.5/4
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 1.34 64-bit229675%
4.5/6
69%
5.5/8
 35%
3.5/10
  
Invictus r228 64-bit229262%
2.5/4
55%
5.5/10
75%
1.5/2
 25%
1.5/6
 
Matilde 2008 64-bit229060%
6/10
83%
5/6
44%
3.5/8
   
Chaturanga 2.4.3228980%
8/10
50%
3/6
62%
5/8
   
AliChess 4.252282 42%
2.5/6
69%
5.5/8
   
Raven 0.70 64-bit228225%
1/4
  30%
3/10
  
Kingfisher 1.0 64-bit2280 58%
3.5/6
100%
2/2
65%
6.5/10
  
Ayito 0.2.994226865%
6.5/10
75%
4.5/6
38%
3/8
33%
4/12
 38%
1.5/4
CT800 1.30 64-bit2256 67%
4/6
  59%
9.5/16
 
RattateChess 1.0 Nosferatu2253 50%
3/6
55%
17.5/32
  50%
2/4
Exacto 0.e 64-bit2252 50%
3/6
44%
14/32
  62%
2.5/4
Beowulf 2.4a 64-bit2249 67%
4/6
   50%
2/4
Mango Paola Ajedrez 4.12245 83%
5/6
56%
4.5/8
 44%
3.5/8
 
Weini 0.0.23 64-bit2241  67%
21.5/32
42%
17/40
  
Buzz 0.08 64-bit2234 92%
5.5/6
75%
6/8
  0%
0/4
RamJet 0.13223290%
9/10
75%
4.5/6
56%
4.5/8
 56%
4.5/8
38%
1.5/4
Dolphin 1.0 64-bit2230 100%
6/6
62%
20/32
50%
6/12
50%
4/8
50%
2/4
SpaceDog 0.97.7 64-bit223075%
6/8
   56%
4.5/8
 
Tiny Chess 1.46 64-bit2222 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
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
Uralochka 1.1b2218    100%
1/1
38%
1.5/4
CT800 1.12 64-bit2216  50%
4/8
 31%
2.5/8
56%
4.5/8
Joker2 0.7.7 64-bit2214  0%
0/2
62%
2.5/4
64%
9/14
 
Neurosis 2.32214 100%
6/6
   25%
1/4
OBender 03.2016 64-bit2214 75%
4.5/6
66%
21/32
 38%
3/8
38%
1.5/4
Adam 3.32211    69%
5.5/8
75%
3/4
Betsabe II 1.09c2209    44%
3.5/8
75%
3/4
Latista (Sinobyl) 1.52206 25%
1.5/6
  56%
4.5/8
38%
1.5/4
Baislicka 1.0 64-bit2205   50%
2/4
50%
2/4
 
Dorpsgek Eve's Temptation 64-bit2200  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-bit2189 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
MORA 1.1.0218383%
5/6
    50%
4/8
BlackBishop 0.472181    75%
6/8
100%
2/2
Prophet 2.0 64-bit2177    44%
3.5/8
38%
1.5/4
Asymptote 0.1.8 64-bit2176 92%
5.5/6
44%
3.5/8
66%
26.5/40
  
Isa 1.9.51 64-bit2173    69%
5.5/8
50%
2/4
Embla 2.0.0 64-bit2172 75%
27/36
   50%
5/10
Clever Girl r185 64-bit2170 88%
3.5/4
  75%
1.5/2
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
Chesley r323 64-bit2162 92%
5.5/6
  56%
4.5/8
 
Micah 1.0 64-bit216250%
1/2
  33%
2/6
  
Embla 1.0.2 64-bit2110    65%
6.5/10
44%
3.5/8
Hedgehog 1.82 64-bit2097    75%
1.5/2
88%
10.5/12
Detroid 0.9.0 64-bit2092  72%
21.5/30
82%
33/40
  
Little Wing 0.6.0 64-bit2074100%
2/2
    50%
4/8
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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Rating list
Testing profile
  (Step: , Numbers: )

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
Sort cross-tables by:   Rating   Name
Highlight diagonal of cells wide. (0 to highlight everything)

Reference rating list:
Recalibrate:
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  Recalibrate reference list to current one using all common engines
  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 May 8, 2021