CCRL 40/40
Downloads and Statistics
December 7, 2019
Testing summary:
Total: 1'104'002 games
played by 2'573 programs
150928 CPU days (X2 4600+)

White wins: 382'601 (34.7%)
Black wins: 284'129 (25.7%)
Draws: 437'272 (39.6%)
White score: 54.5%

Custom engine selection

Comparing 10 engines!
10 selected engines played 0 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 7, 2019 with Bayeselo based on 1'104'002 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+
1FireFly 2.7.2 64-bit2329+16−1647.5%+16.730.0%1362 
100.0%
 FireFly 2.7.0 64-bit2286+17−1750.5%−5.129.2%1230
99.7%
 FireFly 2.6.0 64-bit2233+33−3351.3%−12.023.1%342
73.0%
 FireFly 2.5.12 64-bit2217+37−3752.1%−16.722.3%264
64.0%
 FireFly 2.5.13 64-bit2208+34−3450.0%−7.428.7%303
79.7%
 FireFly 2.5.13 32-bit2187+34−3451.0%−7.822.9%306
63.0%
 FireFly 2.5.102179+34−3449.5%+4.323.5%302
87.9%
 FireFly 2.5.8 32-bit2150+34−3447.1%+20.723.4%308
99.9%
 FireFly 2.5.6 32-bit2087+22−2246.8%+20.624.1%722
75.2%
 FireFly 2.5.42073+33−3447.9%+12.520.8%331
 

Results matrix

Custom engine selection
#NameElo12345678910
1FireFly 2.7.2 64-bit2329          
2FireFly 2.7.0 64-bit2286          
3FireFly 2.6.0 64-bit2233          
4FireFly 2.5.12 64-bit2217          
5FireFly 2.5.13 64-bit2208          
6FireFly 2.5.13 32-bit2187          
7FireFly 2.5.102179          
8FireFly 2.5.8 32-bit2150          
9FireFly 2.5.6 32-bit2087          
10FireFly 2.5.42073          
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
#NameElo12345678910
1FireFly 2.7.2 64-bit2329 100.0100.0100.0100.0100.0100.0100.0100.0100.0
2FireFly 2.7.0 64-bit22860.0 99.799.9100.0100.0100.0100.0100.0100.0
3FireFly 2.6.0 64-bit22330.00.3 73.084.896.898.6100.0100.0100.0
4FireFly 2.5.12 64-bit22170.00.127.0 64.087.693.099.5100.0100.0
5FireFly 2.5.13 64-bit22080.00.015.236.0 79.787.799.0100.0100.0
6FireFly 2.5.13 32-bit21870.00.03.212.420.3 63.093.3100.0100.0
7FireFly 2.5.1021790.00.01.47.012.337.0 87.9100.0100.0
8FireFly 2.5.8 32-bit21500.00.00.00.51.06.712.1 99.999.9
9FireFly 2.5.6 32-bit20870.00.00.00.00.00.00.00.1 75.2
10FireFly 2.5.420730.00.00.00.00.00.00.00.124.8 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

Number of connecting games matrix

Custom engine selection
#NameElo12345678910
1FireFly 2.7.2 64-bit2329 41442080584275016
2FireFly 2.7.0 64-bit2286414 3526191695924320
3FireFly 2.6.0 64-bit223342352 027312081212
4FireFly 2.5.12 64-bit2217060 1149072801160
5FireFly 2.5.13 64-bit220880191273114 132445460
6FireFly 2.5.13 32-bit218758691290132 24216816212
7FireFly 2.5.102179425907244242 22324366
8FireFly 2.5.8 32-bit2150752488054168223 24754
9FireFly 2.5.6 32-bit208703121166162243247 331
10FireFly 2.5.4207316201200126654331 
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
#NameElo12345678910
1FireFly 2.7.2 64-bit2329 16.02.50.04.83.52.54.50.00.9
2FireFly 2.7.0 64-bit228616.0 22.40.412.54.53.91.60.21.3
3FireFly 2.6.0 64-bit22332.522.4 0.042.31.90.01.21.11.8
4FireFly 2.5.12 64-bit22170.00.40.0 20.115.812.714.011.80.0
5FireFly 2.5.13 64-bit22084.812.542.320.1 21.77.38.80.60.0
6FireFly 2.5.13 32-bit21873.54.51.915.821.7 39.827.415.81.9
7FireFly 2.5.1021792.53.90.012.77.339.8 36.623.710.4
8FireFly 2.5.8 32-bit21504.51.61.214.08.827.436.6 24.08.5
9FireFly 2.5.6 32-bit20870.00.21.111.80.615.823.724.0 31.4
10FireFly 2.5.420730.91.31.80.00.01.910.48.531.4 
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 147 common opponents

Custom engine selection
NameEloFireFly
2.7.2
64-bit
FireFly
2.7.0
64-bit
FireFly
2.6.0
64-bit
FireFly
2.5.12
64-bit
FireFly
2.5.13
64-bit
FireFly
2.5.13
32-bit
FireFly
2.5.10
FireFly
2.5.8
32-bit
FireFly
2.5.6
32-bit
FireFly
2.5.4
Abrok 5.0244333%
2/6
25%
0.5/2
        
Snitch 1.6.2 64-bit243242%
2.5/6
0%
0/2
        
Cmcchess 2.6 64-bit242050%
3/6
100%
2/2
        
PostModernist 1016241925%
1.5/6
50%
1/2
        
Ares 1.005 64-bit241717%
1/6
29%
3.5/12
        
Shallow r688 64-bit2412 33%
2/6
25%
2.5/10
       
Gaia 3.5 64-bit241167%
4/6
25%
0.5/2
        
Ares 1.005.2 64-bit241033%
2/6
100%
2/2
        
Tigran 2.4n 64-bit2399 36%
5/14
38%
1.5/4
       
Myrddin 0.87 64-bit239550%
1.5/3
44%
3.5/8
        
Jazz 721 64-bit2384 31%
2.5/8
45%
4.5/10
       
TJchess 1.1 64-bit2364 0%
0/2
  25%
1/4
     
Myrddin 0.86 64-bit2359 50%
4/8
  38%
1.5/4
     
Plisk 0.2.7d 64-bit235862%
10.5/17
38%
1.5/4
        
Aice 0.99.2233850%
3/6
      75%
1.5/2
  
Maverick 0.51 64-bit2338 32%
4.5/14
62%
2.5/4
       
EveAnn 1.712334 25%
2/8
20%
2/10
       
Bagatur 1.3a 64-bit2325 38%
6/16
54%
6.5/12
 25%
0.5/2
     
EveAnn 1.72231953%
19.5/37
34%
5.5/16
        
ECE 12.012318  50%
1.5/3
 25%
0.5/2
     
NameEloFireFly
2.7.2
64-bit
FireFly
2.7.0
64-bit
FireFly
2.6.0
64-bit
FireFly
2.5.12
64-bit
FireFly
2.5.13
64-bit
FireFly
2.5.13
32-bit
FireFly
2.5.10
FireFly
2.5.8
32-bit
FireFly
2.5.6
32-bit
FireFly
2.5.4
EveAnn 1.672318    6%
0.5/8
62%
2.5/4
    
Gibbon 2.69a 64-bit231862%
2.5/4
50%
9/18
        
Waxman 20132313 29%
3.5/12
44%
3.5/8
       
Capivara LK 0.09a01a 64-bit2307 38%
3/8
50%
4/8
 35%
3.5/10
     
Waxman 20112304  44%
3.5/8
 0%
0/4
     
Ant 2006-F230255%
5.5/10
    50%
1/2
    
Joker 1.1.14230155%
5.5/10
57%
4/7
        
Natwarlal 0.14230167%
4/6
      0%
0/2
  
Anechka 0.082299 0%
0/2
   0%
0/2
 50%
1/2
  
Fischerle 0.9.80 SE 64-bit229850%
2.5/5
53%
9/17
        
Popochin 3.22295 50%
1/2
   25%
0.5/2
 50%
1/2
  
Absolute Zero 2.4.7.2 64-bit229465%
13/20
41%
4.5/11
        
Fischerle 0.9.70 SE 64-bit2294 58%
3.5/6
  62%
5/8
     
Mediocre 0.52293 30%
3/10
44%
3.5/8
 75%
3/4
     
Chaturanga 2.4.3228975%
4.5/6
    50%
1/2
50%
1/2
17%
0.5/3
  
Bearded N44.2 64-bit2285 67%
8/12
  55%
5.5/10
     
Butcher 1.61 32-bit2285     38%
1.5/4
0%
0/4
   
AliChess 4.252284    38%
1.5/4
25%
1.5/6
 25%
0.5/2
  
Galjoen 0.38 64-bit228358%
7/12
      25%
1/4
  
Rhetoric Lite2282  25%
1/4
 0%
0/2
     
NameEloFireFly
2.7.2
64-bit
FireFly
2.7.0
64-bit
FireFly
2.6.0
64-bit
FireFly
2.5.12
64-bit
FireFly
2.5.13
64-bit
FireFly
2.5.13
32-bit
FireFly
2.5.10
FireFly
2.5.8
32-bit
FireFly
2.5.6
32-bit
FireFly
2.5.4
Butcher 1.64 64-bit228162%
5/8
42%
2.5/6
41%
6.5/16
 56%
4.5/8
     
Gibbon 2.57a 64-bit2272 62%
2.5/4
42%
10/24
 50%
3/6
     
Isa 2.0.48 64-bit226961%
8.5/14
50%
0.5/1
        
Ayito 0.2.994226325%
1.5/6
50%
1/2
     0%
0/2
  
Tigran 2.3 64-bit2261  39%
3.5/9
 38%
3/8
     
Isa 2.0.45 64-bit226083%
5/6
71%
8.5/12
        
Sungorus 1.4 32-bit2259     50%
2/4
30%
3/10
100%
2/2
  
CT800 1.30 64-bit225550%
7/14
   50%
7/14
     
Exacto 0.e 64-bit225158%
3.5/6
51%
23/45
        
RattateChess 1.0 Nosferatu225183%
5/6
50%
1/2
   44%
3.5/8
25%
1/4
   
Beowulf 2.4a 64-bit224967%
4/6
50%
4/8
  50%
1/2
     
Mango Paola Ajedrez 4.12247 60%
14.5/24
75%
3/4
       
Lozza 1.14a 64-bit2246 80%
4/5
  45%
4.5/10
     
Absolute Zero 2.4.0.0 64-bit2242 56%
18/32
38%
1.5/4
       
Feuerstein 0.4.6.12238        20%
1/5
10%
1/10
Atak 6.82236   62%
15/24
75%
3/4
46%
5.5/12
50%
2/4
100%
2/2
  
Buzz 0.08 64-bit222942%
2.5/6
50%
1/2
        
Dolphin 1.0 64-bit222983%
5/6
   42%
2.5/6
60%
6/10
50%
1/2
25%
0.5/2
  
RamJet 0.13222750%
3/6
30%
3/10
       40%
4/10
Mango Paola Ajedrez 1.02226 50%
4/8
36%
5/14
       
NameEloFireFly
2.7.2
64-bit
FireFly
2.7.0
64-bit
FireFly
2.6.0
64-bit
FireFly
2.5.12
64-bit
FireFly
2.5.13
64-bit
FireFly
2.5.13
32-bit
FireFly
2.5.10
FireFly
2.5.8
32-bit
FireFly
2.5.6
32-bit
FireFly
2.5.4
Tiny Chess 1.46 64-bit222485%
8.5/10
50%
1/2
        
Hussar 0.22223       42%
5/12
50%
1/2
 
Vajolet 1.62.12221  25%
1/4
 55%
5.5/10
     
Robocide 20170718 64-bit222069%
11/16
100%
1/1
        
Myrddin 0.85 64-bit2218   44%
10.5/24
33%
4/12
     
Beowulf 2.4a 32-bit2217     42%
5/12
25%
1.5/6
38%
1.5/4
12%
0.5/4
 
Joker2 0.7.7 64-bit221762%
7.5/12
     12%
1/8
   
CT800 1.12 64-bit221675%
3/4
56%
18/32
        
Gibbon 2.52a2216     0%
0/2
 50%
2/4
31%
5/16
 
MadChess 1.3 64-bit2214 62%
2.5/4
44%
3.5/8
       
OBender 03.2016 64-bit221467%
4/6
50%
3/6
   50%
5/10
    
ChessKISS 1.7c 64-bit2213 70%
7/10
    35%
3.5/10
   
Adam 3.32210 100%
2/2
 38%
9/24
58%
7/12
40%
4/10
58%
3.5/6
8%
0.5/6
  
Neurosis 2.3221067%
4/6
31%
2.5/8
        
ChessKISS 1.7 64-bit220958%
3.5/6
88%
3.5/4
67%
16/24
 36%
6.5/18
     
Neurosis 2.52206   50%
12/24
    39%
8.5/22
 
Myrddin 0.85 32-bit2205     55%
5.5/10
67%
8/12
   
BlackBishop 1.02201      50%
1/2
50%
2.5/5
27%
6.5/24
 
Dorpsgek Eve's Temptation 64-bit219875%
3/4
64%
32/50
        
Carballo 0.82195 100%
8/8
66%
10.5/16
 55%
5.5/10
     
NameEloFireFly
2.7.2
64-bit
FireFly
2.7.0
64-bit
FireFly
2.6.0
64-bit
FireFly
2.5.12
64-bit
FireFly
2.5.13
64-bit
FireFly
2.5.13
32-bit
FireFly
2.5.10
FireFly
2.5.8
32-bit
FireFly
2.5.6
32-bit
FireFly
2.5.4
Jazz 444 32-bit2195     50%
2/4
31%
2.5/8
17%
0.5/3
  
Dorpsgek Dillinger 64-bit2194 70%
15.5/22
   55%
5.5/10
    
OBender 3.2.4.22191   54%
13/24
    44%
3.5/8
 
GopherCheck 0.2.3 64-bit2190 75%
1.5/2
     35%
3.5/10
  
NG-Play 9.85 64-bit219092%
5.5/6
100%
2/2
        
Zevra 1.8.2 r612 64-bit218981%
6.5/8
      25%
1/4
  
NG-Play 9.87 64-bit218794%
7.5/8
64%
9/14
        
Mediocre 0.342186        25%
3/12
42%
5/12
NagaSkaki 5.122186      62%
2.5/4
 50%
5/10
 
Shallow 1.0 64-bit2185  54%
6.5/12
 57%
12/21
     
Fischerle 0.9.30b 64-bit2184 83%
10/12
50%
11/22
       
KMTChess 1.2.1 32-bit2182     50%
6/12
62%
7.5/12
 36%
6.5/18
 
Atak 6.52180        100%
1/1
0%
0/4
ECE 11.012179   46%
11/24
  65%
6.5/10
8%
0.5/6
25%
0.5/2
 
Hamsters 0.0.62177       45%
4.5/10
50%
1/2
 
Lime 662177        27%
8.5/32
35%
3.5/10
RedQueen 0.62177       60%
6/10
50%
6/12
 
Sjakk 1.1.72174      75%
1.5/2
33%
1/3
  
Sungorus 1.22173      50%
5/10
 60%
3/5
 
Clever Girl r185 64-bit216975%
10.5/14
      67%
4/6
  
NameEloFireFly
2.7.2
64-bit
FireFly
2.7.0
64-bit
FireFly
2.6.0
64-bit
FireFly
2.5.12
64-bit
FireFly
2.5.13
64-bit
FireFly
2.5.13
32-bit
FireFly
2.5.10
FireFly
2.5.8
32-bit
FireFly
2.5.6
32-bit
FireFly
2.5.4
Kurt 0.9.2.2 64-bit2169   69%
16.5/24
50%
5/10
     
Pawny 0.132169      70%
7/10
45%
4.5/10
12%
0.5/4
 
RamJet 0.14216962%
2.5/4
69%
23.5/34
        
ProChess 1.02AD2163 46%
5.5/12
67%
16/24
 50%
1/2
     
Simplex 0.9.3 32-bit2163      35%
3.5/10
 50%
7/14
 
Betsabe II 1.052158      75%
3/4
50%
5/10
  
Chesley r323 32-bit2155     62%
12.5/20
56%
4.5/8
83%
2.5/3
  
Dorpsgek Cosmopolitan 2 64-bit2151 50%
2/4
    65%
6.5/10
   
Ifrit j4.32150      35%
3.5/10
42%
2.5/6
  
KnockOut 0.7.12150   58%
14/24
 38%
3/8
38%
1.5/4
46%
6.5/14
31%
5/16
 
GopherCheck 0.2.2 64-bit2140     75%
3/4
88%
3.5/4
   
Waxman 20082139      85%
8.5/10
40%
4/10
44%
7/16
50%
4/8
Prophet 2.0 32-bit2137      50%
1/2
62%
2.5/4
12%
0.5/4
54%
6.5/12
Parrot 07.07.222135      50%
1/2
 50%
1/2
32%
4.5/14
Napoleon 1.7 64-bit2133 62%
2.5/4
    50%
10/20
   
TJchess 0.1212133       100%
4/4
33%
18/54
 
Bearded 06_29_022130     75%
3/4
25%
0.5/2
25%
1/4
53%
10/19
 
Clarabit 1.00 32-bit2115      75%
1.5/2
 58%
7/12
 
Kurt 0.9.2 32-bit2113     50%
4/8
50%
4/8
63%
9.5/15
67%
4/6
 
MadChess 1.2 64-bit2112  42%
5/12
 65%
6.5/10
     
NameEloFireFly
2.7.2
64-bit
FireFly
2.7.0
64-bit
FireFly
2.6.0
64-bit
FireFly
2.5.12
64-bit
FireFly
2.5.13
64-bit
FireFly
2.5.13
32-bit
FireFly
2.5.10
FireFly
2.5.8
32-bit
FireFly
2.5.6
32-bit
FireFly
2.5.4
Myrddin 0.84 32-bit2112      55%
5.5/10
 100%
2/2
 
Napoleon 1.4.0 64-bit2109 62%
5/8
  33%
2/6
     
Adam 3.12108        42%
2.5/6
48%
11.5/24
Prophet3 20170909 64-bit209975%
3/4
100%
2/2
        
Carballo 0.52096    50%
1/2
81%
6.5/8
50%
2/4
62%
2.5/4
41%
6.5/16
 
BikJump 2.01 32-bit2084     25%
0.5/2
50%
1/2
 34%
11.5/34
62%
2.5/4
Ifrit j2.92079      55%
5.5/10
 88%
3.5/4
65%
13/20
BigLion 2.23x2066  50%
2/4
  75%
1.5/2
 62%
2.5/4
50%
22/44
61%
14/23
Protej 0.5.72054 100%
1/1
   50%
1/2
25%
0.5/2
 50%
7/14
 
Rhetoric 0.10.d2050    80%
8/10
75%
4.5/6
    
PLP 16615712046     50%
1/2
100%
2/2
 50%
2/4
 
Jabba 1.0 32-bit2043      100%
2/2
62%
2.5/4
58%
7/12
 
Mustang 4.972043        38%
1.5/4
50%
2/4
Matheus 2.32041       75%
3/4
58%
18.5/32
45%
4.5/10
ChessMind 0.822031       50%
2/4
50%
1/2
 
Slibo 0.5.12024     92%
5.5/6
  85%
8.5/10
 
Bubble 1.52011    75%
6/8
50%
3/6
100%
2/2
75%
3/4
  
AdroitChess 0.31983    88%
3.5/4
75%
3/4
    
Heracles 0.6.161981        54%
6.5/12
75%
3/4
Rival 1.181974        88%
3.5/4
56%
4.5/8
NameEloFireFly
2.7.2
64-bit
FireFly
2.7.0
64-bit
FireFly
2.6.0
64-bit
FireFly
2.5.12
64-bit
FireFly
2.5.13
64-bit
FireFly
2.5.13
32-bit
FireFly
2.5.10
FireFly
2.5.8
32-bit
FireFly
2.5.6
32-bit
FireFly
2.5.4
Dabbaba 5.671964    75%
1.5/2
100%
2/2
    
BSC 3.9++ 32-bit1959    100%
2/2
100%
4/4
    
Soldat III 0.172 32-bit1948  88%
7/8
 50%
1/2
     
ECE 0.31914        75%
6/8
31%
2.5/8
Clueless 1.41912        75%
3/4
78%
14/18
Jabba 130320121905  100%
4/4
 100%
4/4
50%
1/2
    
Surprise 4.3b131893        50%
3/6
64%
9/14
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%

Alter engine selection



Alter output selection

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:
  No recalibration (reference and current list are compared as they are)
  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 December 7, 2019