CCRL 40/4
Downloads and Statistics
December 14, 2019
Testing summary:
Total: 2'147'837 games
played by 2'515 programs
29208 CPU days (X2 4600+)

White wins: 831'895 (38.7%)
Black wins: 671'656 (31.3%)
Draws: 644'286 (30.0%)
White score: 53.7%

Custom engine selection

Comparing 10 engines!
10 selected engines played 5 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 December 14, 2019 with Bayeselo based on 2'147'837 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+
1Gaviota 1.0 64-bit 4CPU2976+14−1446.9%+19.937.0%1663 
100.0%
 Gaviota 1.0 64-bit2872+8−849.0%+7.031.8%6014
100.0%
 Gaviota 0.86 64-bit2799+10−1049.5%+3.128.6%3619
100.0%
 Gaviota 0.85.1 64-bit2728+12−1255.0%−35.125.3%2821
100.0%
 Gaviota 0.84 64-bit2686+12−1253.2%−22.525.2%2639
59.9%
 Gaviota 0.85.1 32-bit2684+19−1938.5%+80.226.9%998
85.1%
 Gaviota 0.83 64-bit 4CPU2669+19−1962.2%−90.324.9%1019
100.0%
 Gaviota 0.83 64-bit2596+17−1753.8%−28.626.3%1235
100.0%
 Gaviota 0.80 64-bit2533+14−1453.9%−27.526.3%1873
100.0%
 Gaviota 0.75.7 64-bit2433+16−1646.0%+30.322.0%1404
 

Results matrix

Custom engine selection
#NameElo12345678910
1Gaviota 1.0 64-bit 4CPU2976          
2Gaviota 1.0 64-bit2872          
3Gaviota 0.86 64-bit2799          
4Gaviota 0.85.1 64-bit2728          
5Gaviota 0.84 64-bit2686       4 − 1
+3−0=2
+101
  
6Gaviota 0.85.1 32-bit2684          
7Gaviota 0.83 64-bit 4CPU2669          
8Gaviota 0.83 64-bit2596    1 − 4
+0−3=2
−101
     
9Gaviota 0.80 64-bit2533          
10Gaviota 0.75.7 64-bit2433          
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
1Gaviota 1.0 64-bit 4CPU2976 100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Gaviota 1.0 64-bit28720.0 100.0100.0100.0100.0100.0100.0100.0100.0
3Gaviota 0.86 64-bit27990.00.0 100.0100.0100.0100.0100.0100.0100.0
4Gaviota 0.85.1 64-bit27280.00.00.0 100.0100.0100.0100.0100.0100.0
5Gaviota 0.84 64-bit26860.00.00.00.0 59.993.3100.0100.0100.0
6Gaviota 0.85.1 32-bit26840.00.00.00.040.1 85.1100.0100.0100.0
7Gaviota 0.83 64-bit 4CPU26690.00.00.00.06.714.9 100.0100.0100.0
8Gaviota 0.83 64-bit25960.00.00.00.00.00.00.0 100.0100.0
9Gaviota 0.80 64-bit25330.00.00.00.00.00.00.00.0 100.0
10Gaviota 0.75.7 64-bit24330.00.00.00.00.00.00.00.00.0 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

Number of connecting games matrix

Custom engine selection
#NameElo12345678910
1Gaviota 1.0 64-bit 4CPU2976 345393300064000
2Gaviota 1.0 64-bit2872345 215287171062839392115
3Gaviota 0.86 64-bit27993932152 19921346119316317800
4Gaviota 0.85.1 64-bit2728308711992 357086112101383929372
5Gaviota 0.84 64-bit2686071013463570 864144020071189570
6Gaviota 0.85.1 32-bit268406281193861864 0000
7Gaviota 0.83 64-bit 4CPU26696439163121014400 199015471050
8Gaviota 0.83 64-bit25960391781383200701990 16411054
9Gaviota 0.80 64-bit253302109291189015471641 1914
10Gaviota 0.75.7 64-bit243301503725700105010541914 
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
1Gaviota 1.0 64-bit 4CPU2976 4.57.40.70.00.02.40.00.00.0
2Gaviota 1.0 64-bit28724.5 22.39.98.29.00.60.50.30.2
3Gaviota 0.86 64-bit27997.422.3 30.921.525.83.53.70.00.0
4Gaviota 0.85.1 64-bit27280.79.930.9 65.422.531.534.119.88.8
5Gaviota 0.84 64-bit26860.08.221.565.4 23.839.451.826.414.1
6Gaviota 0.85.1 32-bit26840.09.025.822.523.8 0.00.00.00.0
7Gaviota 0.83 64-bit 4CPU26692.40.63.531.539.40.0 88.353.543.3
8Gaviota 0.83 64-bit25960.00.53.734.151.80.088.3 52.839.9
9Gaviota 0.80 64-bit25330.00.30.019.826.40.053.552.8 58.4
10Gaviota 0.75.7 64-bit24330.00.20.08.814.10.043.339.958.4 
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 142 common opponents

Custom engine selection
NameEloGaviota
1.0
64-bit
4CPU
Gaviota
1.0
64-bit
Gaviota
0.86
64-bit
Gaviota
0.85.1
64-bit
Gaviota
0.84
64-bit
Gaviota
0.85.1
32-bit
Gaviota
0.83
64-bit
4CPU
Gaviota
0.83
64-bit
Gaviota
0.80
64-bit
Gaviota
0.75.7
64-bit
Hannibal 1.4b 64-bit3018 36%
11.5/32
30%
6/20
       
Naum 4.2 64-bit2987 27%
8.5/32
21%
8.5/40
14%
4.5/32
      
Protector 1.5.0 64-bit2984 34%
11/32
23%
11.5/50
       
Texel 1.03 64-bit2939 33%
10.5/32
21%
2.5/12
       
Spark 1.0 64-bit2927 51%
19.5/38
24%
22/90
28%
9/32
17%
5.5/32
     
Booot 5.2.0 64-bit2922 40%
12/30
20%
2/10
       
Spike 1.4 Leiden2921 43%
17.5/41
36%
35/97
14%
4.5/32
27%
8.5/32
     
DiscoCheck 5.2 64-bit291560%
30/50
43%
19/44
21%
1.5/7
       
Quazar 0.4 64-bit290161%
30/49
49%
19/39
35%
34/97
35%
3.5/10
      
Deep Junior Yokohama 64-bit2898 50%
16/32
28%
9/32
       
Hannibal 1.1 64-bit2895   23%
7.5/32
11%
3.5/32
     
Protector 1.4.0 64-bit2889  30%
15/50
30%
9.5/32
22%
7/32
     
Thinker 5.4d Inert 64-bit288553%
26.5/50
45%
17/38
33%
18/54
       
Thinker 5.4c Inert 64-bit2883   27%
8.5/32
25%
8/32
     
Murka 3 64-bit288268%
34/50
60%
15/25
35%
25.5/72
       
Toga II 3.02875 25%
1.5/6
32%
16/50
       
MinkoChess 1.3 64-bit2870 55%
21/38
44%
14/32
       
Tornado 8.0 64-bit 4CPU286770%
22.5/32
     33%
10.5/32
   
Nemo 1.0.1 64-bit2856 54%
22/41
46%
47.5/103
24%
7.5/31
25%
8/32
     
SmarThink 1.50 64-bit2844 52%
16.5/32
52%
16.5/32
       
NameEloGaviota
1.0
64-bit
4CPU
Gaviota
1.0
64-bit
Gaviota
0.86
64-bit
Gaviota
0.85.1
64-bit
Gaviota
0.84
64-bit
Gaviota
0.85.1
32-bit
Gaviota
0.83
64-bit
4CPU
Gaviota
0.83
64-bit
Gaviota
0.80
64-bit
Gaviota
0.75.7
64-bit
Zappa Mexico II 64-bit2844 64%
25/39
 30%
9.5/32
      
MinkoChess 1.2 64-bit2842  39%
12.5/32
32%
20.5/64
      
Booot 5.1.02838  41%
34/82
34%
11/32
44%
14/32
     
Crafty 23.8 64-bit2825 55%
16/29
46%
18/39
       
Toga II 1.4.1SE2823   42%
13.5/32
20%
6.5/32
     
Cheng4 0.36c 64-bit2819 63%
24/38
44%
28/64
       
Deuterium 14.1.32.119 64-bit2819 59%
19/32
56%
38/68
       
Scorpio 2.7.6 64-bit2816 50%
6/12
49%
35/72
       
Tornado 4.88 64-bit2810 75%
4.5/6
60%
6/10
       
Scorpio 2.7.5 64-bit2804  52%
31/60
30%
3/10
      
Texel 1.01 64-bit2797  48%
39.5/82
29%
11/38
      
Loop 13.6 (Loop 2007) 64-bit2795   26%
8/31
41%
11.5/28
     
Crafty 23.4 64-bit2781  59%
19/32
31%
10/32
47%
15/32
31%
30.5/99
    
Ktulu 92781 62%
20.5/33
34%
11/32
39%
12.5/32
59%
19/32
     
GNU Chess 5.50 64-bit2780 17%
1/6
56%
22.5/40
       
Bright 0.4a2779 75%
4.5/6
48%
19/40
  36%
36/100
    
Octochess r5190 64-bit2778 61%
23/38
55%
26/47
       
Scorpio 2.7 64-bit2775   39%
12/31
39%
12.5/32
40%
39.5/99
    
Bright 0.5c2771 63%
21.5/34
 38%
12/32
39%
12.5/32
     
Twisted Logic 20090922 64-bit2770 69%
22/32
52%
16.5/32
42%
13.5/32
28%
9/32
34%
34.5/100
    
NameEloGaviota
1.0
64-bit
4CPU
Gaviota
1.0
64-bit
Gaviota
0.86
64-bit
Gaviota
0.85.1
64-bit
Gaviota
0.84
64-bit
Gaviota
0.85.1
32-bit
Gaviota
0.83
64-bit
4CPU
Gaviota
0.83
64-bit
Gaviota
0.80
64-bit
Gaviota
0.75.7
64-bit
Frenzee 3.5.19 64-bit2769 56%
22/39
60%
43/72
31%
10/32
48%
15.5/32
34%
34.5/100
    
Jonny 4.002762 67%
113/168
59%
42.5/72
34%
11/32
39%
12.5/32
44%
44.5/100
    
Bison 9.11 64-bit2761 0%
0/1
55%
22/40
41%
13/32
44%
14/32
38%
38/100
    
BugChess2 1.9 64-bit2759 69%
27.5/40
49%
19.5/40
45%
14.5/32
36%
11.5/32
40%
39.5/100
    
SmarThink 1.20 64-bit2747  63%
19.5/31
55%
17.5/32
28%
9/32
44%
44/100
    
Dirty 05Sep2012 64-bit2740  58%
24.5/42
62%
12.5/20
      
Chronos 1.9.9 64-bit2739 50%
1/2
58%
60.5/104
52%
16.5/32
44%
14/32
43%
43/100
    
Chess Tiger 2007.12713   58%
18.5/32
59%
19/32
     
Bobcat 3.25 64-bit2712  58%
33/57
58%
18.5/32
      
Naum 2.0 32-bit2700   55%
17.5/32
47%
15/32
     
Fruit 2.12685  75%
30/40
48%
9.5/20
      
Delfi 5.42682 83%
2.5/3
70%
34.5/49
69%
22/32
47%
15/32
 56%
18/32
39%
12.5/32
  
Deuterium 12.01.30.1070 64-bit2682  60%
6/10
60%
6/10
      
Bobcat 2.75 64-bit2676    56%
24/43
  50%
13.5/27
  
RedQueen 1.0.0 64-bit2674   56%
18/32
67%
8/12
  8%
0.5/6
  
Daydreamer 1.75 64-bit2672  76%
38/50
56%
18/32
36%
11.5/32
 45%
14.5/32
47%
15/32
  
Dirty 25Aug2011 64-bit2668   72%
23/32
42%
5/12
  10%
0.5/5
  
Alaric 7072663 100%
2/2
 67%
21.5/32
50%
16/32
 56%
18/32
42%
13.5/32
40%
12/30
 
Cheng3 1.07 64-bit2661  45%
4.5/10
65%
35/54
      
Naraku 1.312653   53%
17/32
72%
23/32
   20%
6/30
 
NameEloGaviota
1.0
64-bit
4CPU
Gaviota
1.0
64-bit
Gaviota
0.86
64-bit
Gaviota
0.85.1
64-bit
Gaviota
0.84
64-bit
Gaviota
0.85.1
32-bit
Gaviota
0.83
64-bit
4CPU
Gaviota
0.83
64-bit
Gaviota
0.80
64-bit
Gaviota
0.75.7
64-bit
Colossus 2008b2641 75%
1.5/2
 58%
18.5/32
52%
16.5/32
 55%
17.5/32
42%
13.5/32
  
Cyrano 0.6b17 64-bit2641   56%
17.5/31
58%
17.5/30
 68%
21/31
36%
11.5/32
32%
9.5/30
 
Deuterium 11.01.28.1592636   66%
21/32
48%
21/44
  40%
2/5
  
E.T. Chess 13.01.082634 100%
2/2
 69%
22/32
61%
19.5/32
     
ProDeo 1.72630   59%
19/32
62%
18.5/30
     
Gandalf 62627 100%
1/1
 69%
22/32
58%
18.5/32
     
Alfil 8.1.1 Optimized2625   58%
18.5/32
52%
16.5/32
 64%
20.5/32
45%
14.5/32
32%
9.5/30
 
WildCat 82623 0%
0/1
 69%
21.5/31
53%
17/32
 56%
17.5/31
42%
13.5/32
  
Movei 00.8.438 (10 10 10)2622 100%
1/1
 67%
21.5/32
55%
17.5/32
     
Philou 3.7.1 64-bit2620  85%
8.5/10
70%
23/33
      
Godel 2.3.7 64-bit2618  100%
6/6
62%
20/32
      
Sloppy 0.2.2 64-bit2616   75%
24/32
66%
21/32
 69%
21.5/31
28%
9/32
48%
14.5/30
 
Slow Chess Blitz WV2.12615 100%
1/1
 73%
23.5/32
53%
17/32
 41%
13/32
52%
15.5/30
  
Rotor 0.82611 75%
1.5/2
75%
7.5/10
       
Ruffian 2.1.02608   73%
23.5/32
58%
18.5/32
     
GarboChess 2.20 64-bit2606   78%
25/32
59%
19/32
     
Amyan 1.722604   74%
23/31
64%
28/44
 59%
19/32
51%
19/37
42%
12.5/30
 
Zappa 1.1 64-bit2604    50%
16/32
 53%
17/32
45%
13.5/30
40%
12/30
29%
8.5/29
Pharaon 3.5.12603 100%
2/2
 75%
24/32
53%
17/32
 44%
14/32
59%
19/32
38%
11.5/30
 
Cheng3 1.05 64-bit2602    71%
8.5/12
  60%
3/5
  
NameEloGaviota
1.0
64-bit
4CPU
Gaviota
1.0
64-bit
Gaviota
0.86
64-bit
Gaviota
0.85.1
64-bit
Gaviota
0.84
64-bit
Gaviota
0.85.1
32-bit
Gaviota
0.83
64-bit
4CPU
Gaviota
0.83
64-bit
Gaviota
0.80
64-bit
Gaviota
0.75.7
64-bit
GNU Chess 5.07.173b 64-bit2597  85%
8.5/10
66%
21/32
65%
28.5/44
  30%
1.5/5
  
GNU Chess 5.07.1705b (TCEC) 64-bit2596    67%
29.5/44
  60%
3/5
  
N2 0.4 64-bit2590   73%
23.5/32
61%
27/44
 66%
21/32
47%
17.5/37
42%
12.5/30
32%
9.5/30
Ruffian 1.0.52585   72%
23/32
66%
21/32
 67%
21.5/32
39%
12.5/32
50%
15/30
25%
7.5/30
CuckooChess 1.12 64-bit2583   78%
25/32
75%
9/12
     
Cheng3 1.04 64-bit2581    67%
8/12
  20%
1/5
  
Francesca MAD 0.192581 100%
1/1
  62%
7.5/12
     
Hamsters 0.7.12578   78%
25/32
72%
23/32
 61%
19.5/32
62%
20/32
35%
10.5/30
 
Pseudo 0.7c2576   78%
25/32
67%
21.5/32
 55%
17.5/32
64%
20.5/32
50%
15/30
20%
6/30
Arasan 13.1 64-bit2575    75%
9/12
  70%
3.5/5
  
Rotor 0.62573   66%
21/32
59%
26/44
 64%
20.5/32
62%
23.5/38
48%
15.5/32
 
SOS 5.12573 100%
1/1
 66%
21/32
83%
26.5/32
 67%
21.5/32
53%
17/32
 12%
3.5/30
Francesca MAD 0.182570    62%
7.5/12
  70%
3.5/5
  
Aristarch 4.502566    72%
23/32
 55%
17.5/32
42%
13.5/32
43%
13/30
38%
11.5/30
Petir 4.392566   88%
28/32
60%
26.5/44
  90%
4.5/5
  
Deuterium 09.01.26.4922561        45%
13.5/30
35%
10.5/30
Brutus 8.05 64-bit2557   65%
20/31
52%
16.5/32
  52%
16.5/32
58%
17.5/30
 
Glass 1.7 64-bit2556    79%
9.5/12
  70%
3.5/5
  
The Baron 2.23 64-bit2555   75%
24/32
76%
25/33
 67%
21.5/32
58%
18.5/32
45%
13.5/30
40%
12/30
Philou 3.602551    75%
9/12
  70%
3.5/5
  
NameEloGaviota
1.0
64-bit
4CPU
Gaviota
1.0
64-bit
Gaviota
0.86
64-bit
Gaviota
0.85.1
64-bit
Gaviota
0.84
64-bit
Gaviota
0.85.1
32-bit
Gaviota
0.83
64-bit
4CPU
Gaviota
0.83
64-bit
Gaviota
0.80
64-bit
Gaviota
0.75.7
64-bit
Hermann 2.6 64-bit2540   80%
25.5/32
66%
29/44
  60%
3/5
  
AnMon 5.752539   77%
24.5/32
69%
22/32
 62%
20/32
56%
18/32
50%
15/30
25%
7.5/30
CuckooChess 1.11 64-bit2539    83%
10/12
  60%
3/5
  
SmarThink 0.17a2537    73%
23.5/32
 59%
19/32
59%
19/32
43%
13/30
35%
10.5/30
Hermann 2.8 64-bit2531    71%
8.5/12
  60%
3/5
  
DanaSah 4.662530    67%
8/12
  20%
1/5
  
GreKo 8.2 64-bit2526    62%
7.5/12
  60%
3/5
  
Dirty 6J-222513        64%
18.5/29
45%
13/29
Hermann 2.5 64-bit2512      69%
22/32
52%
16.5/32
55%
16.5/30
47%
14/30
Rodin 4.02512    75%
9/12
  70%
3.5/5
  
Pupsi2 0.082507    54%
6.5/12
  70%
3.5/5
47%
15/32
 
Green Light Chess 3.01.2.22505      83%
26.5/32
81%
26/32
45%
13/29
34%
10/29
Little Goliath Evolution 3.122505      61%
19/31
60%
18.5/31
30%
9/30
32%
9.5/30
Yace 0.99.872503      65%
20/31
70%
22.5/32
67%
20/30
40%
12/30
Trace 1.37a2500      73%
23.5/32
59%
19/32
57%
17/30
27%
8/30
nanoSzachy 3.92495    58%
7/12
  70%
3.5/5
  
Bruja 1.9.1 64-bit2490      66%
21/32
47%
15/32
55%
16.5/30
37%
11/30
Kiwi 0.6d 64-bit2470 100%
1/1
    86%
27.5/32
62%
20/32
70%
21/30
62%
18.5/30
Xpdnt 0910072469      81%
26/32
66%
21/32
62%
18.5/30
 
Dorky 4.3 64-bit2466    62%
7.5/12
  90%
4.5/5
  
NameEloGaviota
1.0
64-bit
4CPU
Gaviota
1.0
64-bit
Gaviota
0.86
64-bit
Gaviota
0.85.1
64-bit
Gaviota
0.84
64-bit
Gaviota
0.85.1
32-bit
Gaviota
0.83
64-bit
4CPU
Gaviota
0.83
64-bit
Gaviota
0.80
64-bit
Gaviota
0.75.7
64-bit
Pawny 0.3 64-bit2463    96%
11.5/12
  50%
2.5/5
  
Delphil 2.82450    75%
9/12
  80%
4/5
  
Counter 1.22447        55%
16.5/30
52%
15.5/30
SpiderChess 0706032439 100%
1/1
      73%
22/30
50%
15/30
Atlas 3.14b 64-bit2436    79%
9.5/12
  40%
2/5
  
Abrok 5.02435      84%
27/32
83%
26.5/32
67%
20/30
42%
12.5/30
King of Kings 2.562434        62%
18.5/30
58%
17.5/30
Eeyore 1.52 64-bit2427    75%
9/12
  70%
3.5/5
  
Gaia 3.5 64-bit2425        60%
18/30
40%
12/30
Quark 2.352423        52%
15.5/30
58%
17.5/30
Hussar 0.42419    67%
8/12
  80%
4/5
  
Snitch 1.6.2 32-bit2418        72%
21.5/30
50%
15/30
Dragon 4.62417        70%
21/30
70%
21/30
OliThink 5.3.0 64-bit2417        63%
19/30
58%
17.5/30
Typhoon 1.00-3582414    96%
11.5/12
  80%
4/5
  
RomiChess P3k 64-bit2409        67%
20/30
52%
15.5/30
KnightDreamer 3.32393 100%
1/1
       63%
19/30
Leila 0.53h2388        68%
20.5/30
47%
14/30
Amy 0.87b2385        70%
21/30
60%
17.5/29
Diablo 0.5.12385        52%
15.5/30
65%
19.5/30
NameEloGaviota
1.0
64-bit
4CPU
Gaviota
1.0
64-bit
Gaviota
0.86
64-bit
Gaviota
0.85.1
64-bit
Gaviota
0.84
64-bit
Gaviota
0.85.1
32-bit
Gaviota
0.83
64-bit
4CPU
Gaviota
0.83
64-bit
Gaviota
0.80
64-bit
Gaviota
0.75.7
64-bit
Gosu 0.162382        73%
22/30
60%
18/30
Sage 3.532325 100%
1/1
      87%
26/30
58%
17.5/30
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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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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Created in 2005-2013 by CCRL team
Last games added on December 14, 2019