CCRL 40/4
Downloads and Statistics
October 12, 2019
Testing summary:
Total: 2'115'766 games
played by 2'468 programs
28564 CPU days (X2 4600+)

White wins: 821'094 (38.8%)
Black wins: 663'997 (31.4%)
Draws: 630'675 (29.8%)
White score: 53.7%

Custom engine selection

Comparing 5 engines!
5 selected engines played 64 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 CPU.
Computed on October 12, 2019 with Bayeselo based on 2'115'766 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+
1Strelka 5.1 64-bit3142+20−1966.4%−118.939.7%907 
53.6%
 Strelka 5.5 64-bit3141+9−933.8%+127.932.6%6357
100.0%
 Strelka 2.0 B 64-bit2856+19−1957.1%−50.429.1%1037
100.0%
 Strelka 1.8 32-bit2783+13−1348.2%+7.935.5%2103
100.0%
 Strelka 1.0b 32-bit2739+17−1755.4%−40.330.9%1202
 

Results matrix

Custom engine selection
#NameElo12345
1Strelka 5.1 64-bit3142     
2Strelka 5.5 64-bit3141     
3Strelka 2.0 B 64-bit2856     
4Strelka 1.8 32-bit2783    43 − 21
+32−10=22
+68
5Strelka 1.0b 32-bit2739   21 − 43
+10−32=22
−68
 
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
1Strelka 5.1 64-bit3142 53.6100.0100.0100.0
2Strelka 5.5 64-bit314146.4 100.0100.0100.0
3Strelka 2.0 B 64-bit28560.00.0 100.0100.0
4Strelka 1.8 32-bit27830.00.00.0 100.0
5Strelka 1.0b 32-bit27390.00.00.00.0 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

Number of connecting games matrix

Custom engine selection
#NameElo12345
1Strelka 5.1 64-bit3142 18047600
2Strelka 5.5 64-bit3141180 000
3Strelka 2.0 B 64-bit28564760 17563
4Strelka 1.8 32-bit278300175 2108
5Strelka 1.0b 32-bit273900632108 
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
1Strelka 5.1 64-bit3142 2.524.50.00.0
2Strelka 5.5 64-bit31412.5 0.00.00.0
3Strelka 2.0 B 64-bit285624.50.0 5.62.8
4Strelka 1.8 32-bit27830.00.05.6 63.8
5Strelka 1.0b 32-bit27390.00.02.863.8 
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 36 common opponents

Custom engine selection
NameEloStrelka
5.1
64-bit
Strelka
5.5
64-bit
Strelka
2.0
B
64-bit
Strelka
1.8
32-bit
Strelka
1.0b
32-bit
Komodo 5 64-bit314655%
22/40
50%
50.5/100
   
Komodo 4 64-bit312748%
24.5/51
 14%
7/50
  
Naum 4.2 64-bit 4CPU309948%
9.5/20
59%
59/100
   
Naum 4.2 64-bit298882%
24.5/30
 22%
7/32
  
Rybka 2.3.2a 64-bit2978  22%
7/32
12%
2/16
 
Spark 1.0 64-bit292780%
25.5/32
 41%
13/32
  
Spike 1.4 Leiden292289%
27.5/31
 44%
14/32
  
Hannibal 1.1 64-bit289580%
25.5/32
 45%
14.5/32
  
Protector 1.4.0 64-bit289090%
26/29
 33%
10.5/32
  
Loop M1-T 64-bit 4CPU2882   31%
29.5/96
24%
23.5/99
Rybka 1.2 32-bit2864   32%
20/63
28%
18/64
Rybka 1.1 32-bit2854   32%
20.5/64
31%
20/64
Rybka 1.0 64-bit2852   36%
23/64
23%
14.5/64
Zappa Mexico II 64-bit284488%
25.5/29
 45%
14.5/32
  
Rybka 1.0 32-bit2792   41%
26.5/64
39%
25/64
Toga II 1.2.1a 32-bit2763   50%
16/32
56%
18/32
Spike 1.2 Turin2731   61%
19.5/32
55%
17.5/32
Naum 2.0 32-bit2700  79%
24.5/31
56%
18/32
73%
23.5/32
Naum 2.0 64-bit2694   59%
19/32
64%
20.5/32
Alaric 7072663  64%
20.5/32
67%
21.5/32
 
NameEloStrelka
5.1
64-bit
Strelka
5.5
64-bit
Strelka
2.0
B
64-bit
Strelka
1.8
32-bit
Strelka
1.0b
32-bit
Glaurung 1.2.1 32-bit2657   56%
17.5/31
69%
22/32
Glaurung 1.2.1 64-bit2656   67%
19.5/29
66%
21/32
Scorpio 1.912641   73%
23.5/32
59%
19/32
Alaric 7042618   70%
22.5/32
73%
23.5/32
Delfi 5.12615   77%
24.5/32
71%
22/31
Slow Chess Blitz WV2.12615   73%
23.5/32
62%
20/32
Frenzee 3.0 64-bit2614   70%
22.5/32
64%
20.5/32
WildCat 72606   78%
25/32
70%
22.5/32
Pharaon 3.5.12604   83%
26.5/32
67%
21.5/32
Zappa 1.1 64-bit2604   77%
24.5/32
80%
25.5/32
List 5.122592   75%
24/32
77%
24/31
Ruffian 1.0.52586   75%
24/32
78%
25/32
Pseudo 0.7c2576   77%
24.5/32
73%
23.5/32
SOS 5.12574   92%
29.5/32
72%
23/32
Aristarch 4.502567   81%
26/32
80%
25.5/32
Petir 4.392566   84%
27/32
72%
23/32
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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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
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Reference rating list:
Recalibrate:
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  Recalibrate current list to reference using all common engines


Created in 2005-2013 by CCRL team
Last games added on October 12, 2019