CCRL 40/4
Downloads and Statistics
September 14, 2019
Testing summary:
Total: 2'097'576 games
played by 2'442 programs
28220 CPU days (X2 4600+)

White wins: 814'639 (38.8%)
Black wins: 658'954 (31.4%)
Draws: 623'983 (29.7%)
White score: 53.7%

Custom engine selection

Comparing 14 engines!
14 selected engines played 0 games with each other

CCRL 40/4 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 4 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 1.5 minutes on a modern Intel CPU.
Computed on September 14, 2019 with Bayeselo based on 2'097'576 games

Color legend: Commercial, Free, Open source, Private.
Bold font - tested with 300 games or more. Normal font - less than 300 games.

RankNameRatingScoreAverage
Opponent
DrawsGamesLOS
Elo+
1Zevra 2.1.2 r248 64-bit2426+20−2050.6%−7.622.5%926 
84.9%
 Zevra 2.0 r172 64-bit2407+31−3066.7%−123.220.1%413
94.2%
 Zevra 2.1.1 r216 64-bit2379+18−1844.1%+43.620.9%1187
100.0%
 Zevra 1.8.6 r672 64-bit2302+18−1847.9%+15.625.2%1137
96.9%
 Zevra 1.8.5 r664 64-bit2273+25−2557.9%−58.524.5%567
99.9%
 Zevra 1.8.4 r650 64-bit2220+20−2045.5%+36.722.4%897
65.3%
 Zevra 1.8.3 r636 64-bit2214+20−2052.0%−14.120.4%894
99.9%
 Zevra 1.8.1 r594 64-bit2152+32−3167.9%−132.717.8%410
100.0%
 Zevra 1.6.1 r512 64-bit1954+20−2048.9%+7.423.9%884
86.7%
 Zevra 1.6.1 r5136 64-bit1933+30−3046.9%+23.426.6%384
97.9%
 Zevra 1.5 r446 64-bit1890+28−2854.0%−30.117.5%475
83.1%
 Zevra 1.6 r4971870+31−3145.5%+32.719.8%379
100.0%
 Zevra 1.31 r3401767+26−2649.3%+4.921.5%543
73.8%
 Zevra 1.21 r2901755+28−2837.6%+90.427.1%458
 

Results matrix

Custom engine selection
#NameElo1234567891011121314
1Zevra 2.1.2 r248 64-bit2426              
2Zevra 2.0 r172 64-bit2407              
3Zevra 2.1.1 r216 64-bit2379              
4Zevra 1.8.6 r672 64-bit2302              
5Zevra 1.8.5 r664 64-bit2273              
6Zevra 1.8.4 r650 64-bit2220              
7Zevra 1.8.3 r636 64-bit2214              
8Zevra 1.8.1 r594 64-bit2152              
9Zevra 1.6.1 r512 64-bit1954              
10Zevra 1.6.1 r5136 64-bit1933              
11Zevra 1.5 r446 64-bit1890              
12Zevra 1.6 r4971870              
13Zevra 1.31 r3401767              
14Zevra 1.21 r2901755              
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
#NameElo1234567891011121314
1Zevra 2.1.2 r248 64-bit2426 84.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Zevra 2.0 r172 64-bit240715.1 94.2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
3Zevra 2.1.1 r216 64-bit23790.05.8 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
4Zevra 1.8.6 r672 64-bit23020.00.00.0 96.9100.0100.0100.0100.0100.0100.0100.0100.0100.0
5Zevra 1.8.5 r664 64-bit22730.00.00.03.1 99.9100.0100.0100.0100.0100.0100.0100.0100.0
6Zevra 1.8.4 r650 64-bit22200.00.00.00.00.1 65.3100.0100.0100.0100.0100.0100.0100.0
7Zevra 1.8.3 r636 64-bit22140.00.00.00.00.034.7 99.9100.0100.0100.0100.0100.0100.0
8Zevra 1.8.1 r594 64-bit21520.00.00.00.00.00.00.1 100.0100.0100.0100.0100.0100.0
9Zevra 1.6.1 r512 64-bit19540.00.00.00.00.00.00.00.0 86.7100.0100.0100.0100.0
10Zevra 1.6.1 r5136 64-bit19330.00.00.00.00.00.00.00.013.3 97.999.8100.0100.0
11Zevra 1.5 r446 64-bit18900.00.00.00.00.00.00.00.00.02.1 83.1100.0100.0
12Zevra 1.6 r49718700.00.00.00.00.00.00.00.00.00.216.9 100.0100.0
13Zevra 1.31 r34017670.00.00.00.00.00.00.00.00.00.00.00.0 73.8
14Zevra 1.21 r29017550.00.00.00.00.00.00.00.00.00.00.00.026.2 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

Number of connecting games matrix

Custom engine selection
#NameElo1234567891011121314
1Zevra 2.1.2 r248 64-bit2426 0130000600000000
2Zevra 2.0 r172 64-bit24070 02701383761670000000
3Zevra 2.1.1 r216 64-bit237913000 630600000000
4Zevra 1.8.6 r672 64-bit2302027063 82211640000000
5Zevra 1.8.5 r664 64-bit22730138082 5492483000000
6Zevra 1.8.4 r650 64-bit222063766211549 5330000000
7Zevra 1.8.3 r636 64-bit22140167064248533 0000000
8Zevra 1.8.1 r594 64-bit21520000300 30730059033
9Zevra 1.6.1 r512 64-bit19540000000307 2462383610236
10Zevra 1.6.1 r5136 64-bit19330000000300246 1145800
11Zevra 1.5 r446 64-bit1890000000059238114 237157246
12Zevra 1.6 r49718700000000036158237 0161
13Zevra 1.31 r340176700000003001570 394
14Zevra 1.21 r2901755000000032360246161394 
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
#NameElo1234567891011121314
1Zevra 2.1.2 r248 64-bit2426 0.061.50.00.00.30.00.00.00.00.00.00.00.0
2Zevra 2.0 r172 64-bit24070.0 0.017.414.128.712.80.00.00.00.00.00.00.0
3Zevra 2.1.1 r216 64-bit237961.50.0 2.70.00.30.00.00.00.00.00.00.00.0
4Zevra 1.8.6 r672 64-bit23020.017.42.7 4.810.43.20.00.00.00.00.00.00.0
5Zevra 1.8.5 r664 64-bit22730.014.10.04.8 37.517.00.30.00.00.00.00.00.0
6Zevra 1.8.4 r650 64-bit22200.328.70.310.437.5 29.80.00.00.00.00.00.00.0
7Zevra 1.8.3 r636 64-bit22140.012.80.03.217.029.8 0.00.00.00.00.00.00.0
8Zevra 1.8.1 r594 64-bit21520.00.00.00.00.30.00.0 23.737.86.70.00.30.3
9Zevra 1.6.1 r512 64-bit19540.00.00.00.00.00.00.023.7 19.417.528.60.017.6
10Zevra 1.6.1 r5136 64-bit19330.00.00.00.00.00.00.037.819.4 13.37.60.00.0
11Zevra 1.5 r446 64-bit18900.00.00.00.00.00.00.06.717.513.3 27.815.426.4
12Zevra 1.6 r49718700.00.00.00.00.00.00.00.028.67.627.8 0.019.2
13Zevra 1.31 r34017670.00.00.00.00.00.00.00.30.00.015.40.0 39.4
14Zevra 1.21 r29017550.00.00.00.00.00.00.00.317.60.026.419.239.4 
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 78 common opponents

Custom engine selection
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.0
r172
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
1.8.3
r636
64-bit
Zevra
1.8.1
r594
64-bit
Zevra
1.6.1
r512
64-bit
Zevra
1.6.1
r5136
64-bit
Zevra
1.5
r446
64-bit
Zevra
1.6
r497
Zevra
1.31
r340
Zevra
1.21
r290
Anatoli 0.35k245442%
13.5/32
 52%
16.5/32
           
LittleThought 1.052 64-bit245252%
16.5/32
 47%
15/32
           
Matacz 1.4244647%
15/32
 55%
17.5/32
           
Lozza 1.18 64-bit244542%
13.5/32
 44%
14/32
           
Ares 1.005.2 64-bit244150%
15.5/31
 33%
10.5/32
           
SpiderChess 070603243955%
17.5/32
 44%
14/32
           
MadChess 2.2 64-bit243661%
19.5/32
 42%
13.5/32
           
Abrok 5.0243556%
18/32
 34%
11/32
           
King of Kings 2.56243455%
17.5/32
 52%
16/31
           
LambChop 10.99243455%
17.5/32
 50%
16/32
           
Nemeton 1.82433  48%
15.5/32
37%
11.5/31
          
Eeyore 1.52 64-bit242750%
16/32
 62%
20/32
           
Gaia 3.5 64-bit242547%
14.5/31
 33%
12/36
           
Nejmet 3.07242553%
17/32
 39%
13.5/35
           
Hussar 0.4241942%
13.5/32
 39%
13.5/35
  100%
1/1
        
Dragon 4.6241759%
19/32
 53%
18.5/35
  50%
0.5/1
        
RomiChess P3n 64-bit241550%
16/32
 44%
13.5/31
           
Simplex 0.9.8 64-bit241052%
16.5/32
 36%
12.5/35
           
Taltos rev118 64-bit240553%
17/32
 50%
16/32
           
Ifrit m1.8 64-bit240359%
19/32
 44%
15.5/35
           
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.0
r172
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
1.8.3
r636
64-bit
Zevra
1.8.1
r594
64-bit
Zevra
1.6.1
r512
64-bit
Zevra
1.6.1
r5136
64-bit
Zevra
1.5
r446
64-bit
Zevra
1.6
r497
Zevra
1.31
r340
Zevra
1.21
r290
Giraffe 20161023 64-bit236955%
17.5/32
 58%
21.5/37
           
Amateur 2.822351   45%
14.5/32
 33%
8/24
        
Isa 2.0.64 64-bit2319 65%
15.5/24
 48%
9.5/20
          
Aice 0.99.22315 60%
14.5/24
 48%
15.5/32
 21%
5/24
        
Sungorus 1.4 64-bit2313 52%
12.5/24
 45%
14.5/32
          
Asterisk 0.62307 66%
16.5/25
   40%
8.5/21
        
Averno 0.812307 62%
15.5/25
 48%
15.5/32
          
KnightX 1.922297 70%
17.5/25
 58%
18.5/32
          
Rival 1.0.1 64-bit2275   55%
17.5/32
 100%
1/1
        
Natwarlal 0.142261   61%
19.5/32
52%
26/50
         
FireFly 2.7.2 64-bit2253   61%
19.5/32
 49%
32.5/67
        
Napoleon 1.8 64-bit2250   58%
18.5/32
  38%
12/32
       
GopherCheck 0.2.3 64-bit2237 85%
20.5/24
   54%
35.5/66
55%
17/31
       
Robocide 20170718 64-bit2237     50%
33.5/67
44%
14/32
       
Ant 2006-F2236    54%
27.5/51
61%
19/31
        
Anechka 0.082235    63%
32/51
57%
38.5/68
60%
18/30
       
AliChess 4.252229    44%
22/50
46%
31.5/68
45%
14.5/32
       
Joker2 0.7.7 64-bit2228 71%
17/24
   43%
28.5/67
        
Adam 3.32220 73%
17.5/24
  71%
35.5/50
46%
31/68
41%
13/32
       
RamJet 0.132220 67%
16/24
    48%
15.5/32
       
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.0
r172
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
1.8.3
r636
64-bit
Zevra
1.8.1
r594
64-bit
Zevra
1.6.1
r512
64-bit
Zevra
1.6.1
r5136
64-bit
Zevra
1.5
r446
64-bit
Zevra
1.6
r497
Zevra
1.31
r340
Zevra
1.21
r290
CT800 1.20 64-bit2218     45%
13.5/30
55%
17.5/32
       
Exacto 0.e 64-bit2217 98%
21.5/22
  47%
22.5/48
47%
30/64
        
Madeleine 0.22183    50%
0.5/1
 52%
16.5/32
       
Gunborg 1.35 64-bit2066    100%
1/1
  52%
14.5/28
      
Little Wing 0.4.0 64-bit2017       70%
19.5/28
48%
15/31
     
Leonidas 83 64-bit2005       71%
20/28
 43%
12.5/29
    
Gullydeckel 2.16pl11992       70%
21/30
45%
14/31
     
BigLion 2.23x1989       72%
21.5/30
44%
14/32
     
Arabian Knight 1.551987       100%
1/1
 40%
12/30
    
Bubble 1.51987       77%
23/30
 40%
12/30
    
Embla 1.0.1 64-bit1987        44%
14/32
37%
11/30
    
La Dame Blanche 2.0c1968       80%
24/30
 42%
12.5/30
    
SSEChessII 2.05 DC1967       78%
23.5/30
45%
14.5/32
63%
19/30
    
Eia 0.31961       65%
19.5/30
47%
14/30
47%
14/30
38%
11/29
   
Chess4j 3.2 64-bit1957        55%
17.5/32
53%
16/30
    
Mustang 4.971957       100%
1/1
48%
13.5/28
    17%
8.5/49
JanWillem 1.131951        67%
21.5/32
  40%
12/30
  
Smash 1.0.31924           47%
13.5/29
 0%
0/1
Embla 0.9.9 64-bit1917        57%
17/30
 42%
12.5/30
   
IACH 0.56z1916        52%
15/29
 53%
16/30
   
NameEloZevra
2.1.2
r248
64-bit
Zevra
2.0
r172
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
1.8.3
r636
64-bit
Zevra
1.8.1
r594
64-bit
Zevra
1.6.1
r512
64-bit
Zevra
1.6.1
r5136
64-bit
Zevra
1.5
r446
64-bit
Zevra
1.6
r497
Zevra
1.31
r340
Zevra
1.21
r290
Eagle 0.7.51911        43%
13/30
  47%
13.5/29
 35%
16/46
Dabbaba 7.491908        58%
17.5/30
    31%
15.5/50
Warrior 1.0.31907        57%
17/30
 38%
11.5/30
33%
10/30
  
Clueless 1.41905        65%
19.5/30
  48%
14.5/30
  
Morphy 3.221903        43%
13/30
  52%
15.5/30
  
SnailChess 4.0131895        55%
16.5/30
  50%
15/30
 50%
0.5/1
MrChess 2.11884          47%
14/30
43%
13/30
 33%
16.5/50
Purple Haze 2.1.01884          58%
17.5/30
58%
17.5/30
  
Roce 0.03901853          60%
18/30
  0%
0/1
Deepov 0.4.1 64-bit1849         64%
18/28
48%
13/27
52%
15.5/30
  
HeavyChess 0.13 beta1833          62%
18.5/30
  100%
1/1
Celes 0.77c1824          50%
15/30
  54%
27/50
Beaches 2.321803            52%
25.5/49
47%
23.5/50
Enigma 1.1.41792            58%
29/50
35%
17/48
Embracer 1.121785       100%
1/1
    53%
26.5/50
 
Pulsar 2009-9b1771          57%
16.5/29
 53%
26/49
 
Robin 0.9831764          85%
25.5/30
 46%
22.5/49
42%
21/50
Lodocase 2402081760            44%
22/50
47%
22.5/48
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 September 14, 2019