CCRL Blitz
Downloads and Statistics
April 17, 2021
Testing summary:
Total: 2'506'279 games
played by 2'984 programs

White wins: 963'662 (38.4%)
Black wins: 771'889 (30.8%)
Draws: 770'728 (30.8%)
White score: 53.8%

Custom engine selection

Comparing 15 engines!
15 selected engines played 0 games with each other

CCRL Blitz Rating List — Custom engine selection (Quote)

Ponder off, General book up to 12 moves, up to 6 piece EGTB
Time control: From Jan 2020, equivalent to 2'+1" on an Intel i7-4770K. See the "About" page.
Computed on April 17, 2021 with Bayeselo based on 2'506'279 games
Please refer to the "about" page for comments on engine inclusion

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+
1SlowChess Blitz 2.5 64-bit 8CPU3541+15−1543.2%+42.855.3%1256 
99.9%
 SlowChess Blitz 2.3 64-bit 4CPU3434+65−6736.9%+77.052.3%65
63.5%
 SlowChess Blitz Classic 2.2 64-bit 4CPU3422+13−1452.8%−18.257.2%1633
88.7%
 SlowChess Blitz 2.5 64-bit3409+14−1447.1%+24.750.9%1628
95.3%
 SlowChess Blitz 2.4 64-bit3384+26−2645.0%+34.760.0%428
91.8%
 SlowChess Blitz 2.3 64-bit3361+18−1850.0%+0.857.3%932
90.2%
 SlowChess Blitz Classic 2.2 64-bit3345+16−1646.6%+30.251.7%1155
100.0%
 SlowChess Blitz Classic 2.1 64-bit3261+16−1649.6%+2.757.7%1150
99.6%
 SlowChess Blitz Classic 2.0 64-bit3229+19−1851.4%−11.748.9%885
100.0%
 SlowChess Blitz Classic 1.9 64-bit3150+18−1848.9%+6.348.5%958
99.6%
 SlowChess Blitz Classic 1.8 64-bit3115+19−1946.2%+23.940.8%925
100.0%
 SlowChess Blitz Classic 1.6 64-bit3022+18−1852.5%−16.941.0%986
99.7%
 SlowChess Blitz Classic 1.5 64-bit2987+19−1949.7%+3.435.6%937
95.1%
 SlowChess Blitz Classic 1.4 64-bit2963+21−2170.3%−142.332.8%854
100.0%
 Slow Chess Blitz WV2.12614+6−646.0%+31.029.8%12525
 

Results matrix

Custom engine selection
#NameElo123456789101112131415
1SlowChess Blitz 2.5 64-bit 8CPU3541               
2SlowChess Blitz 2.3 64-bit 4CPU3434               
3SlowChess Blitz Classic 2.2 64-bit 4CPU3422               
4SlowChess Blitz 2.5 64-bit3409               
5SlowChess Blitz 2.4 64-bit3384               
6SlowChess Blitz 2.3 64-bit3361               
7SlowChess Blitz Classic 2.2 64-bit3345               
8SlowChess Blitz Classic 2.1 64-bit3261               
9SlowChess Blitz Classic 2.0 64-bit3229               
10SlowChess Blitz Classic 1.9 64-bit3150               
11SlowChess Blitz Classic 1.8 64-bit3115               
12SlowChess Blitz Classic 1.6 64-bit3022               
13SlowChess Blitz Classic 1.5 64-bit2987               
14SlowChess Blitz Classic 1.4 64-bit2963               
15Slow Chess Blitz WV2.12614               
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
#NameElo123456789101112131415
1SlowChess Blitz 2.5 64-bit 8CPU3541 99.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2SlowChess Blitz 2.3 64-bit 4CPU34340.1 63.576.191.197.999.3100.0100.0100.0100.0100.0100.0100.0100.0
3SlowChess Blitz Classic 2.2 64-bit 4CPU34220.036.5 88.799.2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
4SlowChess Blitz 2.5 64-bit34090.023.911.3 95.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
5SlowChess Blitz 2.4 64-bit33840.08.90.84.7 91.899.2100.0100.0100.0100.0100.0100.0100.0100.0
6SlowChess Blitz 2.3 64-bit33610.02.10.00.08.2 90.2100.0100.0100.0100.0100.0100.0100.0100.0
7SlowChess Blitz Classic 2.2 64-bit33450.00.70.00.00.89.8 100.0100.0100.0100.0100.0100.0100.0100.0
8SlowChess Blitz Classic 2.1 64-bit32610.00.00.00.00.00.00.0 99.6100.0100.0100.0100.0100.0100.0
9SlowChess Blitz Classic 2.0 64-bit32290.00.00.00.00.00.00.00.4 100.0100.0100.0100.0100.0100.0
10SlowChess Blitz Classic 1.9 64-bit31500.00.00.00.00.00.00.00.00.0 99.6100.0100.0100.0100.0
11SlowChess Blitz Classic 1.8 64-bit31150.00.00.00.00.00.00.00.00.00.4 100.0100.0100.0100.0
12SlowChess Blitz Classic 1.6 64-bit30220.00.00.00.00.00.00.00.00.00.00.0 99.7100.0100.0
13SlowChess Blitz Classic 1.5 64-bit29870.00.00.00.00.00.00.00.00.00.00.00.3 95.1100.0
14SlowChess Blitz Classic 1.4 64-bit29630.00.00.00.00.00.00.00.00.00.00.00.04.9 100.0
15Slow Chess Blitz WV2.126140.00.00.00.00.00.00.00.00.00.00.00.00.00.0 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

Number of connecting games matrix

Custom engine selection
#NameElo123456789101112131415
1SlowChess Blitz 2.5 64-bit 8CPU3541 114297000000000000
2SlowChess Blitz 2.3 64-bit 4CPU3434114 0000000000000
3SlowChess Blitz Classic 2.2 64-bit 4CPU34222970 000000000000
4SlowChess Blitz 2.5 64-bit3409000 892754792419128000000
5SlowChess Blitz 2.4 64-bit3384000892 0000000000
6SlowChess Blitz 2.3 64-bit33610007540 1261762353190930000
7SlowChess Blitz Classic 2.2 64-bit334500079201261 12776944793810000
8SlowChess Blitz Classic 2.1 64-bit326100041907621277 149110529530000
9SlowChess Blitz Classic 2.0 64-bit322900012803536941491 11438960000
10SlowChess Blitz Classic 1.9 64-bit31500000019047910521143 159563844803
11SlowChess Blitz Classic 1.8 64-bit311500000933819538961595 76651203
12SlowChess Blitz Classic 1.6 64-bit3022000000000638766 149906
13SlowChess Blitz Classic 1.5 64-bit29870000000004485121499 03
14SlowChess Blitz Classic 1.4 64-bit29630000000000000 598
15Slow Chess Blitz WV2.126140000000003363598 
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
#NameElo123456789101112131415
1SlowChess Blitz 2.5 64-bit 8CPU3541 8.610.30.00.00.00.00.00.00.00.00.00.00.00.0
2SlowChess Blitz 2.3 64-bit 4CPU34348.6 0.00.00.00.00.00.00.00.00.00.00.00.00.0
3SlowChess Blitz Classic 2.2 64-bit 4CPU342210.30.0 0.00.00.00.00.00.00.00.00.00.00.00.0
4SlowChess Blitz 2.5 64-bit34090.00.00.0 43.429.528.515.15.10.00.00.00.00.00.0
5SlowChess Blitz 2.4 64-bit33840.00.00.043.4 0.00.00.00.00.00.00.00.00.00.0
6SlowChess Blitz 2.3 64-bit33610.00.00.029.50.0 60.436.619.410.15.00.00.00.00.0
7SlowChess Blitz Classic 2.2 64-bit33450.00.00.028.50.060.4 55.434.022.718.30.00.00.00.0
8SlowChess Blitz Classic 2.1 64-bit32610.00.00.015.10.036.655.4 73.349.945.90.00.00.00.0
9SlowChess Blitz Classic 2.0 64-bit32290.00.00.05.10.019.434.073.3 62.049.50.00.00.00.0
10SlowChess Blitz Classic 1.9 64-bit31500.00.00.00.00.010.122.749.962.0 84.732.823.60.00.0
11SlowChess Blitz Classic 1.8 64-bit31150.00.00.00.00.05.018.345.949.584.7 40.127.50.00.0
12SlowChess Blitz Classic 1.6 64-bit30220.00.00.00.00.00.00.00.00.032.840.1 78.00.00.0
13SlowChess Blitz Classic 1.5 64-bit29870.00.00.00.00.00.00.00.00.023.627.578.0 0.00.0
14SlowChess Blitz Classic 1.4 64-bit29630.00.00.00.00.00.00.00.00.00.00.00.00.0 4.5
15Slow Chess Blitz WV2.126140.00.00.00.00.00.00.00.00.00.00.00.00.04.5 
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 89 common opponents

Custom engine selection
NameEloSlowChess
Blitz
2.5
64-bit
8CPU
SlowChess
Blitz
2.3
64-bit
4CPU
SlowChess
Blitz
Classic
2.2
64-bit
4CPU
SlowChess
Blitz
2.5
64-bit
SlowChess
Blitz
2.4
64-bit
SlowChess
Blitz
2.3
64-bit
SlowChess
Blitz
Classic
2.2
64-bit
SlowChess
Blitz
Classic
2.1
64-bit
SlowChess
Blitz
Classic
2.0
64-bit
SlowChess
Blitz
Classic
1.9
64-bit
SlowChess
Blitz
Classic
1.8
64-bit
SlowChess
Blitz
Classic
1.6
64-bit
SlowChess
Blitz
Classic
1.5
64-bit
SlowChess
Blitz
Classic
1.4
64-bit
Slow
Chess
Blitz
WV2.1
Stockfish 12 64-bit3634   18%
17.5/100
  9%
9/100
        
Dragon by Komodo 64-bit3586   17%
17/100
20%
20.5/100
          
Stockfish 11 64-bit3533     24%
15.5/64
21%
12.5/60
        
Houdini 6 64-bit 4CPU351651%
25/49
 30%
35.5/118
            
Igel 2.9.0 64-bit 8CPU351155%
27/49
37%
24/65
             
Houdini 6 64-bit3443   45%
48.5/108
 31%
20/64
30%
19.5/64
        
Nemorino 6.00 64-bit3438   45%
45/100
 39%
25/64
         
Fire 7.1 64-bit 4CPU342666%
33/50
 49%
57.5/118
            
Ethereal 12.75 64-bit3404   57%
57/100
47%
47/100
          
Ethereal 12.25 64-bit3370     48%
30.5/63
48%
34.5/72
        
Igel 2.9.0 64-bit3361   57%
57/100
55%
55/100
          
Komodo 14 MCTS 64-bit3361      52%
33.5/64
32%
20.5/64
       
Pedone 3.0 64-bit3346   62%
40/64
52%
33/64
          
RubiChess 1.9 64-bit3343   60%
60/100
58%
37/64
          
Xiphos 0.6 64-bit3340   56%
56/100
 52%
33/63
53%
34/64
31%
20/64
       
Fire 7.1 64-bit3334     50%
31.5/63
55%
35.5/64
42%
27/64
       
RofChade 2.3 64-bit3307   66%
42/64
 64%
40.5/63
57%
36.5/64
46%
29.5/64
       
Booot 6.4 64-bit3295   65%
41.5/64
 62%
39.5/64
57%
36.5/64
49%
31/63
38%
24/64
      
Igel 2.7.0 64-bit3286     59%
36.5/62
60%
30/50
        
RofChade 2.202 64-bit3277        47%
23.5/50
25%
8/32
     
NameEloSlowChess
Blitz
2.5
64-bit
8CPU
SlowChess
Blitz
2.3
64-bit
4CPU
SlowChess
Blitz
Classic
2.2
64-bit
4CPU
SlowChess
Blitz
2.5
64-bit
SlowChess
Blitz
2.4
64-bit
SlowChess
Blitz
2.3
64-bit
SlowChess
Blitz
Classic
2.2
64-bit
SlowChess
Blitz
Classic
2.1
64-bit
SlowChess
Blitz
Classic
2.0
64-bit
SlowChess
Blitz
Classic
1.9
64-bit
SlowChess
Blitz
Classic
1.8
64-bit
SlowChess
Blitz
Classic
1.6
64-bit
SlowChess
Blitz
Classic
1.5
64-bit
SlowChess
Blitz
Classic
1.4
64-bit
Slow
Chess
Blitz
WV2.1
Laser 1.7 64-bit3272     66%
41.5/63
59%
37/63
45%
28.5/64
39%
19/49
36%
11.5/32
19%
6/31
    
Schooner 2.2 64-bit3272     69%
43.5/63
60%
38.5/64
48%
31/64
41%
20.5/50
36%
11.5/32
     
Shredder 13 64-bit3270      69%
44/64
46%
29/63
43%
21.5/50
33%
10.5/32
33%
10.5/32
    
Fritz 17 64-bit3269      65%
41.5/64
47%
30/64
38%
19/50
34%
11/32
22%
7/32
    
Defenchess 2.2 64-bit3267      70%
44.5/64
51%
32.5/64
40%
19/48
38%
12/32
25%
8/32
    
Booot 6.3.1 64-bit3254        44%
22/50
47%
14.5/31
26%
8/31
    
Fizbo 2 64-bit3247       43%
27.5/64
51%
25.5/50
36%
11.5/32
22%
7/32
    
RubiChess 1.7.1 64-bit3241       52%
33/64
44%
22/50
      
Andscacs 0.95 64-bit3229       59%
38/64
52%
26/50
38%
12/32
33%
10.5/32
    
RubiChess 1.6.1.1 64-bit3207        51%
25.5/50
38%
12/32
     
Arasan 22.0 64-bit3179       66%
42.5/64
62%
31/50
50%
16/32
38%
12/32
    
Pedone 2.0 64-bit3173       63%
40.5/64
67%
33.5/50
44%
14/32
39%
12.5/32
    
Chiron 4 64-bit3164       67%
43/64
65%
32.5/50
55%
17.5/32
48%
15/31
    
Critter 1.6a 64-bit3156       75%
48/64
64%
32/50
47%
14.5/31
44%
14/32
    
NirvanaChess 2.4 64-bit3131         47%
15/32
39%
12.5/32
    
Vajolet2 2.8 64-bit3127         53%
17/32
44%
14/32
    
Wasp 3.75 64-bit3125         52%
16.5/32
52%
16.5/32
 27%
8.5/32
  
Nemorino 5.00 64-bit3116         61%
19.5/32
59%
19/32
    
Texel 1.07 64-bit3113         48%
15.5/32
52%
16.5/32
42%
13.5/32
   
Rybka 4.1 64-bit3110         52%
16.5/32
56%
18/32
25%
8/32
   
NameEloSlowChess
Blitz
2.5
64-bit
8CPU
SlowChess
Blitz
2.3
64-bit
4CPU
SlowChess
Blitz
Classic
2.2
64-bit
4CPU
SlowChess
Blitz
2.5
64-bit
SlowChess
Blitz
2.4
64-bit
SlowChess
Blitz
2.3
64-bit
SlowChess
Blitz
Classic
2.2
64-bit
SlowChess
Blitz
Classic
2.1
64-bit
SlowChess
Blitz
Classic
2.0
64-bit
SlowChess
Blitz
Classic
1.9
64-bit
SlowChess
Blitz
Classic
1.8
64-bit
SlowChess
Blitz
Classic
1.6
64-bit
SlowChess
Blitz
Classic
1.5
64-bit
SlowChess
Blitz
Classic
1.4
64-bit
Slow
Chess
Blitz
WV2.1
Hannibal 1.7 64-bit3109         48%
15.5/32
56%
18/32
42%
13/31
  0%
0/1
iCE 4.0 64-bit3107         52%
16.5/32
41%
13/32
31%
10/32
   
Protector 1.9.0 64-bit3087         59%
19/32
47%
15/32
42%
13.5/32
28%
9/32
  
Senpai 2.0 64-bit3085         55%
17.5/32
56%
18/32
44%
14/32
36%
11.5/32
  
chess22k 1.13 64-bit3083          53%
17/32
30%
9.5/32
30%
9.5/32
  
Demolito 2019-10-08 64-bit3077          64%
20.5/32
41%
13/32
   
SmarThink 1.98 64-bit3045         62%
20/32
62%
20/32
41%
13/32
45%
14.5/32
  
Naum 4.6 64-bit3031         69%
22/32
72%
23/32
50%
16/32
47%
15/32
  
Hakkapeliitta TCEC v2 64-bit3020         73%
23.5/32
59%
19/32
59%
19/32
52%
16.5/32
  
Deuterium 2019.2.37.73 64-bit3019         67%
21.5/32
70%
22.5/32
42%
13/31
50%
16/32
  
Pirarucu 3.0.7 64-bit3019           50%
16/32
48%
15.5/32
  
Rodent III 0.287 64-bit3005           52%
16/31
42%
13.5/32
  
ChessBrainVB 3.743003           55%
17.5/32
45%
14.5/32
  
Hiarcs 142984           59%
19/32
30%
9.5/32
  
Winter 0.7 64-bit2977           50%
15.5/31
41%
13/32
  
Amoeba 3.0 64-bit2974           55%
17/31
50%
16/32
  
Crafty 25.3 64-bit2964           72%
23/32
53%
17/32
  
Bobcat 8.0 64-bit2960           52%
16.5/32
50%
16/32
  
Marvin 3.4.0 64-bit2957           65%
20/31
61%
19.5/32
  
Godel 6.0 64-bit2947           66%
21/32
61%
19.5/32
  
NameEloSlowChess
Blitz
2.5
64-bit
8CPU
SlowChess
Blitz
2.3
64-bit
4CPU
SlowChess
Blitz
Classic
2.2
64-bit
4CPU
SlowChess
Blitz
2.5
64-bit
SlowChess
Blitz
2.4
64-bit
SlowChess
Blitz
2.3
64-bit
SlowChess
Blitz
Classic
2.2
64-bit
SlowChess
Blitz
Classic
2.1
64-bit
SlowChess
Blitz
Classic
2.0
64-bit
SlowChess
Blitz
Classic
1.9
64-bit
SlowChess
Blitz
Classic
1.8
64-bit
SlowChess
Blitz
Classic
1.6
64-bit
SlowChess
Blitz
Classic
1.5
64-bit
SlowChess
Blitz
Classic
1.4
64-bit
Slow
Chess
Blitz
WV2.1
Cheng 4.39 64-bit2942           66%
21/32
52%
16.5/32
  
Dirty CUCUMBER 64-bit2927           73%
23.5/32
58%
18.5/32
  
Igel 2.0.0 64-bit2925           48%
15.5/32
73%
23.5/32
  
Spark 1.0 64-bit2925           66%
21/32
58%
18.5/32
  
Atlas 3.91 64-bit2923           69%
22/32
59%
19/32
  
Spike 1.4 Leiden2919           77%
24.5/32
64%
69/108
 50%
0.5/1
Quazar 0.4 64-bit2901             56%
18/32
11%
3.5/32
Zurichess Neuchatel 64-bit2901             61%
19.5/32
100%
1/1
Daydreamer 2.0.0-pre2 64-bit2890             61%
19.5/32
50%
0.5/1
Bright 0.5c2771             94%
17/18
18%
5.5/31
Twisted Logic 20090922 64-bit2770             83%
15/18
28%
9/32
Frenzee 3.5.19 64-bit2768             83%
15/18
23%
7.5/32
tomitankChess 3.0 64-bit2765             69%
12.5/18
20%
5/25
Jonny 4.002763             72%
13/18
30%
9/30
BugChess2 1.9 64-bit2759             78%
14/18
27%
8.5/31
Chronos 1.9.9 64-bit2739             78%
14/18
30%
9.5/32
Shield 2.1 64-bit2739             81%
14.5/18
0%
0/1
Chess Tiger 2007.12713             75%
13.5/18
37%
40/109
Colossus 2008b2641             100%
4/4
48%
38/79
Cyrano 0.6b17 64-bit2641             88%
3.5/4
43%
27.5/64
NameEloSlowChess
Blitz
2.5
64-bit
8CPU
SlowChess
Blitz
2.3
64-bit
4CPU
SlowChess
Blitz
Classic
2.2
64-bit
4CPU
SlowChess
Blitz
2.5
64-bit
SlowChess
Blitz
2.4
64-bit
SlowChess
Blitz
2.3
64-bit
SlowChess
Blitz
Classic
2.2
64-bit
SlowChess
Blitz
Classic
2.1
64-bit
SlowChess
Blitz
Classic
2.0
64-bit
SlowChess
Blitz
Classic
1.9
64-bit
SlowChess
Blitz
Classic
1.8
64-bit
SlowChess
Blitz
Classic
1.6
64-bit
SlowChess
Blitz
Classic
1.5
64-bit
SlowChess
Blitz
Classic
1.4
64-bit
Slow
Chess
Blitz
WV2.1
Rodin 8.02640             75%
3/4
49%
16.5/34
Sjakk 2.2 64-bit2637             75%
3/4
53%
17/32
E.T. Chess 13.01.082634             100%
4/4
52%
16.5/32
WyldChess 1.51 64-bit2629             100%
4/4
50%
16/32
Orion 0.6 64-bit2624             100%
4/4
50%
16/32
WildCat 82624             75%
3/4
49%
33/67
Movei 00.8.438 (10 10 10)2621             75%
3/4
54%
21.5/40
Sloppy 0.2.2 64-bit2616             100%
4/4
43%
15/35
Rotor 0.82611             100%
4/4
67%
21.5/32
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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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 April 17, 2021