CCRL 40/15
Downloads and Statistics
March 6, 2021
Testing summary:
Total: 1'223'030 games
played by 2'799 programs

White wins: 420'040 (34.3%)
Black wins: 308'879 (25.3%)
Draws: 494'111 (40.4%)
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 March 6, 2021 with Bayeselo based on 1'223'030 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-bit2391+19−1950.1%−0.326.8%945 
78.4%
 Zevra 2.1.1 r216 64-bit2381+17−1750.8%−7.425.9%1218
100.0%
 Zevra 1.8.6 r672 64-bit2270+21−2050.9%−9.125.9%862
89.1%
 Zevra 1.8.5 r664 64-bit2249+28−2754.5%−32.024.1%493
74.0%
 Zevra 1.8.4 r650 64-bit2236+26−2647.4%+22.728.3%515
99.1%
 Zevra 1.8.2 r612 64-bit2190+28−2845.5%+31.128.2%436
 

Results matrix

Custom engine selection
#NameElo123456
1Zevra 2.1.2 r248 64-bit2391      
2Zevra 2.1.1 r216 64-bit2381  43 − 17
+32−6=22
+31
   
3Zevra 1.8.6 r672 64-bit2270 17 − 43
+6−32=22
−31
    
4Zevra 1.8.5 r664 64-bit2249      
5Zevra 1.8.4 r650 64-bit2236      
6Zevra 1.8.2 r612 64-bit2190      
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-bit2391 78.4100.0100.0100.0100.0
2Zevra 2.1.1 r216 64-bit238121.6 100.0100.0100.0100.0
3Zevra 1.8.6 r672 64-bit22700.00.0 89.197.8100.0
4Zevra 1.8.5 r664 64-bit22490.00.010.9 74.099.8
5Zevra 1.8.4 r650 64-bit22360.00.02.226.0 99.1
6Zevra 1.8.2 r612 64-bit21900.00.00.00.20.9 
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-bit2391 638299138136110
2Zevra 2.1.1 r216 64-bit2381638 662176254262
3Zevra 1.8.6 r672 64-bit2270299662 309266323
4Zevra 1.8.5 r664 64-bit2249138176309 9064
5Zevra 1.8.4 r650 64-bit223613625426690 336
6Zevra 1.8.2 r612 64-bit219011026232364336 
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-bit2391 29.516.59.69.38.0
2Zevra 2.1.1 r216 64-bit238129.5 31.810.314.715.8
3Zevra 1.8.6 r672 64-bit227016.531.8 22.819.324.9
4Zevra 1.8.5 r664 64-bit22499.610.322.8 8.96.9
5Zevra 1.8.4 r650 64-bit22369.314.719.38.9 35.3
6Zevra 1.8.2 r612 64-bit21908.015.824.96.935.3 
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 105 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-bit258025%
2.5/10
0%
0/4
    
Detroid 1.0.1 64-bit255825%
1/4
12%
0.5/4
    
Bagatur 1.5g 64-bit250210%
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-bit2448 45%
4.5/10
  25%
1/4
 
Axolotl 1.8 64-bit244745%
4.5/10
33%
2/6
    
Mephisto Gideon Professional244545%
4.5/10
19%
1.5/8
    
Eeyore 1.52 64-bit2442 42%
2.5/6
  0%
0/1
 
Bearded N44.5 64-bit244135%
3.5/10
46%
5.5/12
    
Nemeton 1.6244040%
4/10
58%
3.5/6
    
Teki 2 64-bit244050%
4/8
25%
0.5/2
    
Taltos rev118 64-bit2439 50%
1/2
 12%
0.5/4
25%
0.5/2
 
Tunguska 1.1 64-bit243946%
6.5/14
42%
8.5/20
    
Snitch 1.6.2 64-bit243450%
5/10
38%
3/8
    
Nemeton 1.72420  50%
1.5/3
17%
5.5/32
  
PostModernist 10162418 75%
4.5/6
56%
4.5/8
   
Gaia 3.5 64-bit241755%
5.5/10
42%
2.5/6
    
RomiChess P3n 64-bit241525%
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-bit2411 50%
2/4
 50%
4/8
  
KnightDreamer 3.3239860%
6/10
70%
7/10
    
Myrddin 0.87 64-bit239753%
20/38
33%
4/12
    
Patzer 3.80239755%
5.5/10
50%
1/2
75%
6/8
   
Popochin 4.1 64-bit239765%
6.5/10
29%
3.5/12
 38%
1.5/4
  
Amateur 2.82239630%
3/10
67%
4/6
25%
2/8
   
Ares GB 64-bit239246%
5.5/12
42%
22/52
28%
8.5/30
   
Ares GB 1.1 64-bit238958%
11.5/20
  62%
5/8
  
CT800 1.41 64-bit238867%
8/12
  30%
3/10
  
Galjoen 0.39 64-bit2388 57%
8/14
23%
2.5/11
   
Isa 2.0.83 64-bit238341%
11.5/28
45%
4.5/10
    
Jazz 721 64-bit237970%
7/10
 38%
3/8
   
Jumbo 0.5.3 64-bit2371 67%
4/6
38%
3/8
  25%
1/4
Waxman 2017237138%
1.5/4
50%
6/12
25%
0.5/2
 12%
0.5/4
 
Isa 2.0.64 64-bit236445%
4.5/10
54%
6.5/12
27%
4/15
0%
0/4
 25%
1/4
Plisk 0.2.7d 64-bit236355%
5.5/10
38%
3/8
44%
3.5/8
  12%
0.5/4
RomiChess P3m 64-bit2361 25%
1.5/6
   38%
1.5/4
Topple 0.1.1 64-bit236050%
5/10
   22%
6.5/30
 
Barbarossa 0.6.0 64-bit235457%
16/28
75%
1.5/2
    
Dirty 0.99z2354 58%
3.5/6
   25%
1/4
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
KnightX 1.94 64-bit235265%
6.5/10
75%
3/4
    
Jazz 840 64-bit234138%
1.5/4
   52%
16.5/32
 
EveAnn 1.71233630%
3/10
 31%
2.5/8
   
Popochin 4.0 64-bit2336    38%
1.5/4
38%
1.5/4
Amundsen 0.802329    44%
3.5/8
50%
2/4
FireFly 2.7.2 64-bit232950%
1/2
50%
7/14
35%
3.5/10
50%
2/4
50%
4/8
19%
1.5/8
Googleplex Starthinker 1.4 64-bit232160%
6/10
73%
36.5/50
    
KnightX 1.93 64-bit2321 62%
2.5/4
 55%
5.5/10
  
EveAnn 1.72232075%
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-bit2320    25%
2/8
38%
1.5/4
KnightX 1.922317    44%
3.5/8
50%
2/4
Asymptote 0.2.0 64-bit2315  25%
0.5/2
42%
2.5/6
  
Averno 0.812315 75%
4.5/6
38%
12/32
 31%
2.5/8
62%
2.5/4
Anechka 0.082302    100%
1/1
25%
1/4
Ant 2006-F230265%
6.5/10
 50%
4/8
 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
Fischerle 0.9.80 SE 64-bit2301    44%
3.5/8
62%
2.5/4
Natwarlal 0.142299    31%
2.5/8
25%
1/4
Absolute Zero 2.4.7.2 64-bit2297    38%
1.5/4
38%
1.5/4
CT800 1.34 64-bit229775%
4.5/6
69%
5.5/8
 35%
3.5/10
  
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
Invictus r228 64-bit229262%
2.5/4
55%
5.5/10
75%
1.5/2
 25%
1.5/6
 
Chaturanga 2.4.3229080%
8/10
50%
3/6
62%
5/8
   
Matilde 2008 64-bit229060%
6/10
83%
5/6
44%
3.5/8
   
AliChess 4.252283 42%
2.5/6
69%
5.5/8
   
Raven 0.70 64-bit228325%
1/4
  30%
3/10
  
Kingfisher 1.0 64-bit2281 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-bit2257 67%
4/6
  59%
9.5/16
 
RattateChess 1.0 Nosferatu2254 50%
3/6
55%
17.5/32
  50%
2/4
Exacto 0.e 64-bit2253 50%
3/6
44%
14/32
  62%
2.5/4
Beowulf 2.4a 64-bit2250 67%
4/6
   50%
2/4
Mango Paola Ajedrez 4.12246 83%
5/6
56%
4.5/8
 44%
3.5/8
 
Weini 0.0.23 64-bit2242  67%
21.5/32
42%
17/40
  
RamJet 0.13223690%
9/10
75%
4.5/6
56%
4.5/8
 56%
4.5/8
38%
1.5/4
Buzz 0.08 64-bit2235 92%
5.5/6
75%
6/8
  0%
0/4
Dolphin 1.0 64-bit2231 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-bit2225 85%
8.5/10
48%
15.5/32
50%
2/4
20%
2/10
 
Robocide 20170718 64-bit2221  69%
22/32
50%
2/4
62%
5/8
50%
2/4
Uralochka 1.1b2219    100%
1/1
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 1.12 64-bit2217  50%
4/8
 31%
2.5/8
56%
4.5/8
Joker2 0.7.7 64-bit2215  0%
0/2
62%
2.5/4
64%
9/14
 
OBender 03.2016 64-bit2215 75%
4.5/6
66%
21/32
 38%
3/8
38%
1.5/4
Neurosis 2.32214 100%
6/6
   25%
1/4
Adam 3.32212    69%
5.5/8
75%
3/4
Betsabe II 1.09c2210    44%
3.5/8
75%
3/4
Latista (Sinobyl) 1.52207 25%
1.5/6
  56%
4.5/8
38%
1.5/4
Baislicka 1.0 64-bit2206   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-bit2195    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 5.122187    56%
4.5/8
0%
0/4
MORA 1.1.0218483%
5/6
    50%
4/8
BlackBishop 0.472182    75%
6/8
100%
2/2
Prophet 2.0 64-bit2178    44%
3.5/8
38%
1.5/4
Asymptote 0.1.8 64-bit2177 92%
5.5/6
44%
3.5/8
66%
26.5/40
  
Isa 1.9.51 64-bit2174    69%
5.5/8
50%
2/4
Embla 2.0.0 64-bit2173 75%
27/36
   50%
5/10
Clever Girl r185 64-bit2171 88%
3.5/4
  75%
1.5/2
50%
2/4
Chesley r323 64-bit2163 92%
5.5/6
  56%
4.5/8
 
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
Micah 1.0 64-bit216350%
1/2
  33%
2/6
  
Embla 1.0.2 64-bit2111    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-bit2093  72%
21.5/30
82%
33/40
  
Little Wing 0.6.0 64-bit2075100%
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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  (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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Created in 2005-2013 by CCRL team
Last games added on March 6, 2021