CCRL 40/40
Downloads and Statistics
October 12, 2019
Testing summary:
Total: 1'090'583 games
played by 2'551 programs
149018 CPU days (X2 4600+)

White wins: 378'348 (34.7%)
Black wins: 281'291 (25.8%)
Draws: 430'944 (39.5%)
White score: 54.4%

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 Intel CPU.
Computed on October 12, 2019 with Bayeselo based on 1'090'583 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-bit2396+30−3050.4%−1.226.3%400 
83.9%
 Zevra 2.1.1 r216 64-bit2379+17−1750.7%−6.525.8%1224
100.0%
 Zevra 1.8.6 r672 64-bit2269+21−2150.9%−9.425.9%862
89.1%
 Zevra 1.8.5 r664 64-bit2247+29−2955.8%−41.224.4%447
71.1%
 Zevra 1.8.4 r650 64-bit2236+26−2647.4%+22.128.3%515
98.1%
 Zevra 1.8.2 r612 64-bit2194+29−3045.6%+31.128.3%400
 

Results matrix

Custom engine selection
#NameElo123456
1Zevra 2.1.2 r248 64-bit2396      
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-bit2247      
5Zevra 1.8.4 r650 64-bit2236      
6Zevra 1.8.2 r612 64-bit2194      
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-bit2396 83.9100.0100.0100.0100.0
2Zevra 2.1.1 r216 64-bit237916.1 100.0100.0100.0100.0
3Zevra 1.8.6 r672 64-bit22690.00.0 89.197.6100.0
4Zevra 1.8.5 r664 64-bit22470.00.010.9 71.199.4
5Zevra 1.8.4 r650 64-bit22360.00.02.428.9 98.1
6Zevra 1.8.2 r612 64-bit21940.00.00.00.61.9 
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-bit2396 352223346678
2Zevra 2.1.1 r216 64-bit2379352 662176254262
3Zevra 1.8.6 r672 64-bit2269223662 309266323
4Zevra 1.8.5 r664 64-bit224734176309 9064
5Zevra 1.8.4 r650 64-bit22366625426690 336
6Zevra 1.8.2 r612 64-bit21947826232364336 
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-bit2396 21.717.74.07.29.8
2Zevra 2.1.1 r216 64-bit237921.7 31.710.514.616.1
3Zevra 1.8.6 r672 64-bit226917.731.7 23.619.325.6
4Zevra 1.8.5 r664 64-bit22474.010.523.6 9.47.6
5Zevra 1.8.4 r650 64-bit22367.214.619.39.4 36.7
6Zevra 1.8.2 r612 64-bit21949.816.125.67.636.7 
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 90 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-bit249310%
1/10
32%
13/40
    
Drosophila 1.5.1 64-bit2481 0%
0/4
  20%
2/10
 
Axolotl 1.8 64-bit244645%
4.5/10
33%
2/6
    
Bumblebee 1.0.36898e1 64-bit2446 45%
4.5/10
  25%
1/4
 
Mephisto Gideon Professional244645%
4.5/10
19%
1.5/8
    
Eeyore 1.52 64-bit2445 42%
2.5/6
  0%
0/1
 
Nemeton 1.6243940%
4/10
58%
3.5/6
    
Bearded N44.5 64-bit243835%
3.5/10
46%
5.5/12
    
Snitch 1.6.2 64-bit243650%
5/10
38%
3/8
    
Taltos rev118 64-bit2436 50%
1/2
 12%
0.5/4
25%
0.5/2
 
PostModernist 10162420 75%
4.5/6
56%
4.5/8
   
Nemeton 1.72419  50%
1.5/3
17%
5.5/32
  
RomiChess P3n 64-bit2416 28%
5.5/20
31%
2.5/8
   
Gaia 3.5 64-bit241255%
5.5/10
42%
2.5/6
    
Ifrit m1.8 64-bit2412 33%
2/6
  0%
0/1
 
Jonesy 1.0 64-bit2410 50%
2/4
 50%
4/8
  
KnightDreamer 3.3240560%
6/10
70%
7/10
    
Patzer 3.80240255%
5.5/10
50%
1/2
75%
6/8
   
Popochin 4.1 64-bit2392 29%
3.5/12
 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
Amateur 2.82239130%
3/10
67%
4/6
25%
2/8
   
Ares GB 64-bit2387 42%
22/52
28%
8.5/30
   
Galjoen 0.39 64-bit2386 57%
8/14
23%
2.5/11
   
Jazz 721 64-bit238570%
7/10
 38%
3/8
   
Jumbo 0.5.3 64-bit2371 67%
4/6
38%
3/8
  25%
1/4
Waxman 20172369 50%
6/12
25%
0.5/2
 12%
0.5/4
 
Topple 0.1.1 64-bit236550%
5/10
   22%
6.5/30
 
Plisk 0.2.7d 64-bit236155%
5.5/10
38%
3/8
44%
3.5/8
  12%
0.5/4
Isa 2.0.64 64-bit236045%
4.5/10
54%
6.5/12
27%
4/15
0%
0/4
 25%
1/4
RomiChess P3m 64-bit2355 25%
1.5/6
   38%
1.5/4
Dirty 0.99z2353 58%
3.5/6
   25%
1/4
KnightX 1.94 64-bit235065%
6.5/10
75%
3/4
    
Popochin 4.0 64-bit2335    38%
1.5/4
38%
1.5/4
EveAnn 1.71233230%
3/10
 31%
2.5/8
   
FireFly 2.7.2 64-bit2331 50%
7/14
35%
3.5/10
50%
2/4
50%
4/8
19%
1.5/8
Amundsen 0.802328    44%
3.5/8
50%
2/4
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
Gibbon 2.69a 64-bit2319    25%
2/8
38%
1.5/4
KnightX 1.93 64-bit2319 62%
2.5/4
 55%
5.5/10
  
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
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 0.812312 75%
4.5/6
38%
12/32
 31%
2.5/8
62%
2.5/4
Ant 2006-F230365%
6.5/10
 50%
4/8
 31%
2.5/8
62%
2.5/4
RubiChess 0.7 64-bit230360%
6/10
42%
2.5/6
12%
1/8
  50%
4/8
Natwarlal 0.142302    31%
2.5/8
25%
1/4
Anechka 0.082300    100%
1/1
25%
1/4
Fischerle 0.9.80 SE 64-bit2298    44%
3.5/8
62%
2.5/4
Absolute Zero 2.4.7.2 64-bit2295    38%
1.5/4
38%
1.5/4
CT800 1.34 64-bit2294 69%
5.5/8
 35%
3.5/10
  
Invictus r228 64-bit2292 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 4.252284 42%
2.5/6
69%
5.5/8
   
Kingfisher 1.0 64-bit2280 58%
3.5/6
100%
2/2
65%
6.5/10
  
Ayito 0.2.994226565%
6.5/10
75%
4.5/6
38%
3/8
33%
4/12
 38%
1.5/4
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
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
Mango Paola Ajedrez 4.12249 83%
5/6
56%
4.5/8
 44%
3.5/8
 
Weini 0.0.23 64-bit2240  67%
21.5/32
42%
17/40
  
Dolphin 1.0 64-bit2230 100%
6/6
62%
20/32
50%
6/12
50%
4/8
50%
2/4
Buzz 0.08 64-bit2229 92%
5.5/6
75%
6/8
  0%
0/4
RamJet 0.13222890%
9/10
75%
4.5/6
56%
4.5/8
 56%
4.5/8
38%
1.5/4
Tiny Chess 1.46 64-bit2225 85%
8.5/10
48%
15.5/32
50%
2/4
20%
2/10
 
Joker2 0.7.7 64-bit2221  0%
0/2
62%
2.5/4
64%
9/14
 
Robocide 20170718 64-bit2221  69%
22/32
50%
2/4
62%
5/8
50%
2/4
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
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-bit2207   50%
2/4
50%
2/4
 
Latista (Sinobyl) 1.52203 25%
1.5/6
  56%
4.5/8
38%
1.5/4
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-bit2191 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
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
BlackBishop 0.472181    75%
6/8
100%
2/2
Prophet 2.0 64-bit2179    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
  
Embla 2.0.0 64-bit2172 75%
27/36
   50%
5/10
Isa 1.9.51 64-bit2172    69%
5.5/8
50%
2/4
Clever Girl r185 64-bit2166 88%
3.5/4
  75%
1.5/2
50%
2/4
Chesley r323 64-bit2162 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-bit2097    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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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 selected engines only
  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 October 12, 2019