CCRL 40/40
Downloads and Statistics
September 14, 2019
Testing summary:
Total: 1'083'337 games
played by 2'531 programs
147896 CPU days (X2 4600+)

White wins: 376'125 (34.7%)
Black wins: 279'699 (25.8%)
Draws: 427'513 (39.5%)
White score: 54.5%

Custom engine selection

Comparing 5 engines!
5 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 Intel CPU.
Computed on September 14, 2019 with Bayeselo based on 1'083'337 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+
1Atak 6.82237+16−1650.9%−6.423.1%1421 
50.5%
 Atak 6.72236+28−2951.5%−9.133.2%407
99.8%
 Atak 6.52180+25−2550.7%−6.423.9%570
94.5%
 Atak 6.02145+34−3448.4%+8.323.0%309
99.5%
 Atak 6.22079+36−3647.5%+15.914.8%304
 

Results matrix

Custom engine selection
#NameElo12345
1Atak 6.82237     
2Atak 6.72236     
3Atak 6.52180     
4Atak 6.02145     
5Atak 6.22079     
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
#NameElo12345
1Atak 6.82237 50.5100.0100.0100.0
2Atak 6.7223649.5 99.8100.0100.0
3Atak 6.521800.00.2 94.5100.0
4Atak 6.021450.00.05.5 99.5
5Atak 6.220790.00.00.00.5 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

Number of connecting games matrix

Custom engine selection
#NameElo12345
1Atak 6.82237 2211842442
2Atak 6.72236221 3345858
3Atak 6.52180184334 190237
4Atak 6.021452458190 252
5Atak 6.220794258237252 
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
#NameElo12345
1Atak 6.82237 12.19.21.42.4
2Atak 6.7223612.1 34.28.18.2
3Atak 6.521809.234.2 21.627.1
4Atak 6.021451.48.121.6 41.1
5Atak 6.220792.48.227.141.1 
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 59 common opponents

Custom engine selection
NameEloAtak
6.8
Atak
6.7
Atak
6.5
Atak
6.0
Atak
6.2
OliThink 5.3.0 32-bit235844%
3.5/8
25%
1/4
   
Rodin 2.3a2339 45%
4.5/10
50%
2/4
  
Ares 1.003a2305 50%
2/4
50%
1/2
  
Anechka 0.08230050%
2/4
75%
3/4
   
Popochin 3.2229650%
2/4
62%
2.5/4
10%
0.5/5
  
Butcher 1.60n1228548%
9.5/20
12%
0.5/4
75%
1.5/2
  
AliChess 4.202265 12%
0.5/4
25%
0.5/2
  
Cheese 1.22260   43%
9.5/22
50%
1/2
Sungorus 1.4 32-bit226049%
16.5/34
38%
1.5/4
   
AliChess 4.21225860%
12/20
75%
3/4
   
Waxman 2009225375%
3/4
57%
8/14
25%
0.5/2
  
RattateChess 1.0 Nosferatu225244%
16/36
62%
2.5/4
   
Beowulf 2.4a 64-bit224950%
1/2
33%
8/24
   
Feuerstein 0.4.6.1223844%
4/9
44%
7/16
50%
5/10
 0%
0/4
Uralochka 1.1b2218 50%
4/8
23%
3/13
58%
3.5/6
31%
2.5/8
Gibbon 2.52a221650%
3/6
53%
8.5/16
42%
22/52
  
ZCT 0.3.24512210   62%
2.5/4
100%
2/2
Atlas 2.202208 75%
3/4
  0%
0/2
Neurosis 2.5220638%
3/8
53%
8.5/16
33%
6/18
  
ChessAlex 2.0r42205  42%
5/12
33%
2/6
25%
1/4
NameEloAtak
6.8
Atak
6.7
Atak
6.5
Atak
6.0
Atak
6.2
BlackBishop 1.02201 60%
14.5/24
38%
5/13
  
RattateChess Bologna 20072201  25%
2/8
 12%
0.5/4
Alf 1.092195  56%
4.5/8
 12%
0.5/4
AliChess 4.082195   50%
5/10
75%
1.5/2
OBender 3.2.4.22192  48%
12.5/26
50%
1/2
38%
1.5/4
Mediocre 0.342187 52%
10.5/20
40%
4/10
  
Neurosis 2.42187   88%
3.5/4
12%
0.5/4
NagaSkaki 5.12218675%
3/4
56%
4.5/8
47%
7.5/16
29%
3.5/12
20%
2/10
KMTChess 1.2.1 32-bit218253%
9.5/18
62%
7.5/12
   
Hamsters 0.0.62178  50%
9/18
47%
7.5/16
0%
0/2
Lime 66217868%
27/40
 45%
9/20
50%
1/2
33%
2/6
Feuerstein 0.4.62174   30%
3/10
50%
3/6
Bearded 06_292156   8%
0.5/6
25%
0.5/2
KnockOut 0.7.1215160%
6/10
88%
7/8
62%
15/24
  
Mediocre 0.3342150   50%
1/2
62%
5/8
Parrot 07.07.222135  44%
3.5/8
 25%
1/4
Waxman 20082134  50%
2/4
 25%
1/4
TJchess 0.1212133 58%
7/12
58%
3.5/6
58%
7/12
50%
1/2
Bearded 06_29_022130 75%
6/8
50%
2/4
  
Adam 3.22129 75%
3/4
59%
13/22
  
NameEloAtak
6.8
Atak
6.7
Atak
6.5
Atak
6.0
Atak
6.2
Clarabit 1.00 32-bit2115  88%
7/8
75%
7.5/10
50%
3/6
Kurt 0.9.2 32-bit211350%
1/2
  55%
5.5/10
 
Adam 3.12109  69%
5.5/8
 50%
2/4
FireFly 2.5.6 32-bit2087 56%
5/9
0%
0/1
  
BikJump 2.01 32-bit2084  88%
3.5/4
 56%
5/9
Buzz 0.072079   75%
1.5/2
14%
1/7
BigLion 2.23x2067  75%
3/4
42%
2.5/6
100%
4/4
BikJump 1.8 32-bit2060   42%
2.5/6
50%
2/4
Gibbon 2.01b2048   100%
2/2
40%
2/5
Monarch 1.72044   50%
1/2
50%
3/6
Mustang 4.972044  62%
2.5/4
62%
5/8
0%
0/2
BibiChess 0.52000   62%
2.5/4
71%
10/14
Rival 1.181975  75%
3/4
88%
3.5/4
75%
4.5/6
Smash 1.0.31950   100%
2/2
100%
2/2
ECE 0.31914  88%
3.5/4
62%
2.5/4
75%
6/8
Clueless 1.41912  100%
4/4
100%
2/2
50%
1/2
Warrior 1.0.31905   100%
4/4
36%
2.5/7
Surprise 4.3b131893   50%
2/4
100%
7/7
Micro-Max 4.81891   100%
2/2
0%
0/2
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
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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

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Reference rating list:
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Created in 2005-2013 by CCRL team
Last games added on September 14, 2019