CCRL 40/2 FRC
Downloads and Statistics
January 25, 2021
Testing summary:
Total: 301'494 games
played by 234 programs

White wins: 121'971 (40.5%)
Black wins: 103'959 (34.5%)
Draws: 75'564 (25.1%)
White score: 53.0%

Free engines

Comparing 184 engines!
63 best versions of selected engines played 43456 games with each other

CCRL 40/2 FRC Rating List — Free engines (Quote)

Ponder off, 5-men EGTB, 128MB hash, 64-bit executables where available, random openings with switched sides
Time control: Equivalent to 40 moves in 2 minutes on an Intel i7-4770k.
Computed on January 25, 2021 with Bayeselo based on 301'494 games
RankNameRatingScoreAverage
Opponent
DrawsGamesLOS
ELO+
1Stockfish 123771+12−1270.1%−144.938.3%2750 
87.7%
 Stockfish 1707203762+13−1372.1%−155.538.2%2350
100.0%
 Stockfish 103718+11−1177.6%−195.935.6%3612
100.0%
 Stockfish 93670+13−1377.3%−213.834.8%2400
99.8%
 Stockfish 1809173642+14−1477.9%−220.633.0%2100
99.8%
 Stockfish 83616+11−1172.7%−180.636.9%3300
98.6%
2Ethereal 12.753595+14−1457.7%−54.339.8%1850
99.9%
 Ethereal 12.503568+10−1051.5%−8.241.0%3440
69.6%
 Stockfish 2005163563+16−1678.0%−230.227.1%1800
98.1%
3SlowChess Blitz 2.43540+12−1251.5%−10.237.5%2650
74.7%
 Stockfish 1503163533+15−1575.2%−200.231.6%1800
87.6%
 Ethereal 12.003521+10−1046.3%+29.138.5%3528
98.3%
 Stockfish 2008153499+15−1571.6%−168.231.6%1800
69.9%
 SlowChess Blitz 2.23494+11−1141.8%+61.133.6%3278
55.9%
 Ethereal 11.753493+12−1254.9%−38.939.0%2600
79.5%
4Fire 7.13487+8−752.9%−29.340.4%7282
99.8%
 Ethereal 11.503467+12−1251.9%−18.037.4%2464
69.4%
 Stockfish 63462+13−1370.9%−161.132.6%2400
100.0%
5Komodo 93416+15−1569.8%−152.230.2%1800
59.0%
 Fire 6.13413+12−1249.3%−0.431.5%2920
53.4%
 SlowChess Blitz 2.13413+13−1339.2%+80.934.5%2200
52.3%
 Stockfish 0405143412+15−1579.7%−245.323.0%2100
65.1%
6Pedone 3.03408+15−1540.9%+62.433.6%1550
53.6%
7RubiChess 1.93407+14−1341.0%+62.431.8%2050
99.5%
8Schooner 2.23386+10−1039.2%+75.236.7%4260
97.6%
 Fire 53371+11−1142.6%+51.929.2%3900
76.9%
 SlowChess Blitz 2.03365+11−1149.3%+6.632.8%3062
96.8%
 Stockfish DD3347+15−1574.9%−199.625.0%2100
71.0%
9Nemorino 6.003341+17−1746.3%+26.129.5%1200
99.6%
10Demolito 2020-12-243313+14−1439.5%+76.332.9%1950
87.3%
 Stockfish 1609133301+14−1464.6%−117.728.9%2100
92.9%
11Critter 1.6a3290+6−641.9%+61.829.1%16644
93.0%
 Pedone 2.03280+12−1245.7%+30.735.7%2480
85.1%
 SlowChess Blitz 1.93270+15−1540.1%+82.833.9%1700
99.6%
 Critter 1.23234+21−2072.2%−175.425.6%1000
56.1%
 Demolito 2020-02-053232+15−1545.8%+28.733.7%1500
63.7%
 SlowChess Blitz 1.83228+20−2048.6%+8.140.1%800
49.2%
 Stockfish 33228+13−1369.2%−157.124.3%2700
96.9%
 Pedone 1.93210+13−1338.3%+88.031.8%2300
73.4%
 Stockfish 2.3.13204+15−1556.7%−56.629.3%1700
52.4%
12‑13Senpai 2.03203+10−1147.2%+21.731.5%3572
48.8%
12‑13Vajolet2 2.83203+12−1248.9%+6.335.1%2236
84.3%
 Stockfish 2.2.13192+18−1864.1%−110.527.0%1200
51.4%
 Stockfish VE_093191+16−1653.8%−36.829.5%1600
64.2%
 Stockfish 2.1.13187+19−1966.3%−124.528.6%1100
57.1%
 Stockfish 2.2.23184+20−2066.3%−125.728.5%1000
74.6%
 Demolito 2019-02-063176+16−1650.4%−5.229.9%1516
49.3%
 Nemorino 5.003176+12−1150.1%−0.831.6%2924
61.7%
 Fire 3.03174+9−931.8%+157.121.2%7200
84.5%
 Pedone 1.83163+19−1952.5%−23.132.3%1000
54.8%
 Critter 1.013161+20−2064.0%−108.928.7%900
96.9%
 Stockfish 2.0.13137+18−1768.7%−145.626.8%1300
63.4%
 Nemorino 4.003132+20−2052.2%−18.627.6%1000
62.0%
 Stockfish 1.83128+19−1971.7%−167.523.9%1100
83.7%
14Monolith 23116+13−1353.2%−26.229.6%2320
61.1%
 Stockfish 1.73112+22−2271.5%−162.927.3%800
56.8%
 Stockfish 1.9.13109+25−2473.0%−179.421.7%700
61.6%
 Critter 0.903104+20−2064.4%−110.125.8%1000
78.5%
 Nemorino 3.04a3093+20−2047.6%+20.429.8%1000
94.2%
15Naum 4.63076+8−846.5%+29.824.3%7440
78.4%
 SlowChess Blitz 1.53069+17−1852.0%−18.428.1%1208
74.4%
16Minic 3.033060+18−1852.8%−20.826.6%1100
95.6%
 Critter 0.803037+19−1955.4%−48.527.1%1000
53.2%
17Rodent IV v0.263036+12−1247.8%+14.930.0%2560
49.4%
 Stockfish 1.63036+22−2264.6%−111.026.1%800
79.8%
 Minic 2.483023+20−1953.0%−21.723.9%960
98.1%
 Minic 2.212997+15−1549.2%+5.624.6%1750
87.9%
18Cheng 4.402983+19−1951.9%−16.123.5%1000
65.2%
 Demolito 2017-08-262978+15−1541.3%+67.325.9%1800
100.0%
19Spike 1.4 Leiden2942+8−837.7%+96.122.4%7520
62.2%
 Stockfish 1.5.12939+19−1955.2%−40.323.8%1000
98.8%
20Bobcat 8.02911+13−1339.1%+81.125.6%2430
90.4%
21EXchess 7.92b2900+12−1241.5%+65.224.3%2570
72.5%
 EXchess 7.71b2894+14−1538.6%+90.523.1%1900
85.9%
 Cheng 4.392884+12−1243.2%+53.522.7%2570
97.1%
 Bobcat 7.62864+18−1852.0%−16.224.8%1100
65.2%
22The Baron 3.442859+16−1753.8%−28.925.8%1310
97.9%
 Cheng4 0.382834+17−1745.2%+39.020.4%1300
56.3%
 Minic 1.152832+20−2048.6%+7.724.8%870
76.2%
23Cyclone xTreme Fear2824+9−947.3%+19.421.2%6420
51.0%
24Cheese 2.22823+19−1947.3%+19.823.6%1000
72.9%
 EXchess 7.18b2816+14−1446.9%+25.822.1%1900
66.2%
 Bobcat 7.12811+18−1849.5%+3.825.1%1100
63.9%
25Tornado 8.02807+15−1653.1%−22.922.2%1520
61.0%
 Toga CMLX 1.4.5e2803+22−2251.4%−8.325.9%700
76.0%
 Glaurung 2.22794+14−1458.3%−71.319.8%2200
71.3%
 The Baron 3.292788+16−1646.9%+21.723.1%1500
56.8%
26Arminius 2018-12-232786+17−1747.9%+14.322.2%1310
64.6%
27GNU Chess 5.602782+11−1145.7%+32.123.6%3220
87.1%
 Cheng4 0.36a2772+13−1355.8%−46.519.8%2600
92.7%
 Fruit 0511032760+10−1057.0%−58.422.6%4100
59.1%
 Cheese 2.02758+17−1750.7%−4.826.1%1300
53.0%
 GNU Chess 5.502757+13−1354.2%−33.219.0%2500
57.7%
28Octochess 51902755+12−1251.6%−12.724.2%2820
58.6%
 Fruit 2.32753+20−1964.0%−108.925.0%1000
47.4%
 Tornado 4.882753+11−1153.0%−23.618.7%3500
99.5%
 Glaurung 2.12729+15−1451.0%−10.419.8%2000
73.6%
29Bright 0.4a2724+9−955.0%−40.619.9%5820
59.0%
30Karballo 1.82721+18−1853.6%−26.225.1%1110
64.4%
 Fruit 2.2.12717+18−1856.6%−54.224.1%1200
70.9%
31Frenzee 3.5.192711+11−1154.1%−33.416.2%3820
47.1%
 Spike 1.2 Turin2711+9−953.4%−28.723.0%5500
80.6%
 Cheese 1.9.12703+16−1650.6%−5.721.6%1400
72.1%
 Glaurung 2.0.12696+15−1548.0%+8.622.6%1900
53.2%
 Arminius 2017-01-012695+17−1755.2%−39.420.8%1310
70.0%
 EXchess 6.50b2689+13−1352.0%−14.319.7%2300
52.2%
 Tornado 4.42689+13−1357.5%−60.618.8%2500
100.0%
32DanaSah 8.302644+18−1846.5%+24.826.0%1100
73.1%
 Cheese 1.82636+19−1948.1%+13.420.6%1100
50.4%
 Glaurung 1.2.12636+13−1346.6%+23.421.4%2400
94.8%
33Fridolin 3.002619+15−1545.7%+31.619.6%1630
86.3%
34‑35Daydreamer 1.752609+9−947.9%+16.322.0%5220
51.0%
34‑35Nebula 2.02609+10−1046.7%+26.520.4%4320
86.2%
36Alfil 13.12599+16−1649.5%+2.920.2%1420
77.4%
 DanaSah 7.902590+15−1555.6%−41.120.5%1640
65.8%
37Maverick 1.52586+13−1348.9%+8.819.6%2220
97.3%
 Frenzee Feb082569+12−1251.2%−10.915.2%3300
49.4%
 Monolith 0.42569+16−1649.1%+6.219.9%1510
48.6%
38Movei 00.8.4382569+8−846.5%+28.319.7%7920
75.0%
 DanaSah 7.302564+16−1551.9%−15.122.8%1520
54.8%
 Tornado 4.12562+15−1550.1%−0.818.3%1900
78.0%
39Dumb 1.72552+20−2049.7%+2.714.2%1000
52.9%
 GNU Chess 5.07.173b2552+13−1352.0%−18.016.3%2700
75.9%
40Pharaon 3.5.12546+7−745.8%+33.019.1%8620
56.3%
 The Baron 2.232546+10−1048.3%+11.717.1%4500
71.2%
 Arminius 2015-08-062540+18−1748.9%+8.221.1%1200
61.4%
41Galjoen 0.40.12536+18−1848.9%+7.721.3%1168
57.6%
42Hermann 2.82534+10−1149.5%+2.317.0%4010
86.9%
43‑44Amyan 1.722526+9−948.5%+12.117.9%4920
55.4%
43‑44Jonny 2.832526+9−948.4%+12.016.0%5320
56.6%
 Fridolin 2.002524+15−1550.4%−2.722.3%1600
59.2%
 Maverick 1.02522+18−1851.3%−10.620.8%1200
70.5%
45Hamsters 0.7.12516+9−948.3%+13.619.8%5610
67.5%
 Hermann 2.52513+13−1351.8%−17.116.8%2400
55.6%
 DanaSah 6.302511+17−1848.4%+10.322.1%1200
92.0%
 Hamsters 0.62494+16−1738.2%+91.819.9%1600
48.6%
 Hermann 2.42494+14−1447.7%+19.417.4%2300
56.2%
 DanaSah 5.072492+18−1855.5%−41.422.7%1100
75.7%
46Ufim 8.022485+8−844.5%+45.019.0%7918
52.7%
 Dumb 1.62484+36−3651.8%−15.014.3%300
67.5%
 DanaSah 4.662475+13−1347.2%+20.619.4%2500
58.0%
 Daydreamer 1.612473+16−1645.4%+35.419.0%1700
53.8%
 Movei 00.8.3832472+15−1541.4%+72.917.5%1900
65.5%
 Tornado 3.422468+14−1443.9%+47.319.5%2000
51.2%
 DanaSah 5.002467+16−1651.6%−13.320.3%1600
67.1%
 Hermann 2.32461+20−2036.9%+109.016.2%1100
55.4%
 Tornado 2.22460+16−1644.2%+43.318.7%1700
77.8%
 The Baron 1.7.02449+22−2245.5%+30.119.3%800
52.1%
 DanaSah 4.202448+12−1245.0%+38.620.1%2800
90.5%
 DanaSah 4.602436+13−1345.9%+32.117.9%2400
49.4%
 Movei 00.8.3662436+26−2652.7%−22.517.0%600
72.4%
 Hamsters 0.52426+22−2240.1%+79.617.7%900
82.6%
 Nebula 1.02413+17−1748.7%+7.818.8%1300
76.4%
47LittleThought 1.0522406+11−1044.2%+43.717.4%4010
78.2%
 Hermann 2.02397+17−1839.3%+87.616.8%1400
90.7%
 Hamsters 0.42380+21−2238.6%+89.818.3%900
70.4%
 SlowChess 2.960d2373+13−1344.4%+42.618.5%2600
53.5%
 Galjoen 0.39.22372+19−1948.5%+9.920.6%1000
91.1%
 Tornado 2.1.41a2353+18−1841.1%+69.820.0%1300
66.8%
 Hermann 1.92347+24−2442.4%+63.616.0%700
54.9%
 Maverick 0.602345+20−2050.4%−4.415.6%1000
74.1%
48Hussar 0.42337+12−1240.0%+78.618.6%3000
67.6%
49Teki 22332+18−1849.8%+2.518.1%1200
98.7%
50Patzer 3.802309+12−1239.5%+84.914.1%3200
70.1%
 Hermann 1.72302+23−2344.9%+40.115.4%800
82.8%
51TJchess 1.012289+12−1238.1%+97.216.1%3100
100.0%
52Aice 0.99.22261+10−1036.2%+110.014.7%5000
92.3%
53Ayito 0.2.9942251+10−1035.6%+119.313.1%4800
61.3%
 Hamsters 0.22248+21−2151.4%−20.716.8%1000
94.9%
54Betsy Fischer2228+12−1237.3%+104.416.0%3400
99.9%
55Robocide 0.42192+19−2045.0%+39.419.1%1000
95.9%
 Hussar 0.22169+18−1940.9%+75.114.0%1300
54.6%
56Chispa 4.0.32167+13−1339.3%+88.526.0%2500
100.0%
57Homer 1.022119+14−1448.8%−2.115.3%2300
100.0%
58RamJet 0.142021+18−1854.3%−44.414.5%1434
98.5%
 Galjoen 0.35.21990+22−2326.8%+189.217.2%900
88.1%
 RamJet 0.121968+32−3329.9%+158.018.8%400
100.0%
59Taktix 2.23x1896+20−2037.1%+112.812.5%1300
91.4%
60BigLion 2.23x1878+19−1937.5%+115.413.6%1400
100.0%
61Sapeli 1.201794+25−2552.2%−22.710.1%800
85.9%
 Sapeli 1.021775+24−2438.1%+105.712.6%900
97.4%
62Stash 11.0.11732+32−3345.2%+38.710.4%450
82.9%
 Sapeli 1.161707+36−3819.4%+271.512.3%400
100.0%
63ArcBishop80 2.24a1497+29−1016.4%+303.77.8%816
 

Results matrix

Free engines (best versions only), top 12
#NameELO123456789101112
1Stockfish 123771 146.5 − 53.5
+103−10=87
−28
192 − 58
+157−23=70
−39
         
2Ethereal 12.75359553.5 − 146.5
+10−103=87
+28
 115 − 85
+62−32=106
−10
136 − 64
+89−17=94
+1
 148.5 − 51.5
+120−23=57
−15
153 − 47
+121−15=64
−4
155 − 45
+124−14=62
−17
    
3SlowChess Blitz 2.4354058 − 192
+23−157=70
+39
85 − 115
+32−62=106
+10
 138 − 112
+73−47=130
−22
 102 − 48
+73−19=58
−15
175.5 − 74.5
+137−36=77
+6
178 − 72
+145−39=66
−1
 198 − 52
+163−17=70
−16
  
4Fire 7.13487 64 − 136
+17−89=94
−1
112 − 138
+47−73=130
+22
  93.5 − 56.5
+64−27=59
0
63 − 37
+49−23=28
+10
61 − 39
+38−16=46
−33
109 − 41
+87−19=44
+12
114 − 36
+85−7=58
−3
232.5 − 67.5
+182−17=101
−9
262.5 − 37.5
+232−7=61
+17
5Komodo 93416          198 − 102
+144−48=108
−20
 
6Pedone 3.03408 51.5 − 148.5
+23−120=57
+15
48 − 102
+19−73=58
+15
56.5 − 93.5
+27−64=59
0
  80 − 70
+51−41=58
+20
73.5 − 76.5
+49−52=49
−28
84.5 − 65.5
+59−40=51
−25
92 − 58
+70−36=44
−17
  
7RubiChess 1.93407 47 − 153
+15−121=64
+4
74.5 − 175.5
+36−137=77
−6
37 − 63
+23−49=28
−10
 70 − 80
+41−51=58
−20
 46 − 54
+29−37=34
−46
86 − 64
+65−43=42
−15
96.5 − 53.5
+74−31=45
+4
61.5 − 38.5
+51−28=21
−31
 
8Schooner 2.23386 45 − 155
+14−124=62
+17
72 − 178
+39−145=66
+1
39 − 61
+16−38=46
+33
 76.5 − 73.5
+52−49=49
+28
54 − 46
+37−29=34
+46
 84 − 66
+64−46=40
−2
58.5 − 41.5
+38−21=41
−17
61.5 − 38.5
+42−19=39
−22
76.5 − 23.5
+62−9=29
+4
9Nemorino 6.003341   41 − 109
+19−87=44
−12
 65.5 − 84.5
+40−59=51
+25
64 − 86
+43−65=42
+15
66 − 84
+46−64=40
+2
 87 − 63
+68−44=38
+28
81 − 69
+55−43=52
−25
 
10Demolito 2020-12-243313  52 − 198
+17−163=70
+16
36 − 114
+7−85=58
+3
 58 − 92
+36−70=44
+17
53.5 − 96.5
+31−74=45
−4
41.5 − 58.5
+21−38=41
+17
63 − 87
+44−68=38
−28
 53.5 − 46.5
+31−24=45
−1
65 − 35
+49−19=32
−7
11Critter 1.6a3290   67.5 − 232.5
+17−182=101
+9
102 − 198
+48−144=108
+20
 38.5 − 61.5
+28−51=21
+31
38.5 − 61.5
+19−42=39
+22
69 − 81
+43−55=52
+25
46.5 − 53.5
+24−31=45
+1
 60 − 40
+46−26=28
−17
12Senpai 2.03203   37.5 − 262.5
+7−232=61
−17
   23.5 − 76.5
+9−62=29
−4
 35 − 65
+19−49=32
+7
40 − 60
+26−46=28
+17
 
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

Free engines (best versions only), top 12
#NameELO123456789101112
1Stockfish 123771 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Ethereal 12.7535950.0 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
3SlowChess Blitz 2.435400.00.0 100.0100.0100.0100.0100.0100.0100.0100.0100.0
4Fire 7.134870.00.00.0 100.0100.0100.0100.0100.0100.0100.0100.0
5Komodo 934160.00.00.00.0 76.079.799.9100.0100.0100.0100.0
6Pedone 3.034080.00.00.00.024.0 53.699.3100.0100.0100.0100.0
7RubiChess 1.934070.00.00.00.020.346.4 99.5100.0100.0100.0100.0
8Schooner 2.233860.00.00.00.00.10.70.5 100.0100.0100.0100.0
9Nemorino 6.0033410.00.00.00.00.00.00.00.0 99.6100.0100.0
10Demolito 2020-12-2433130.00.00.00.00.00.00.00.00.4 99.8100.0
11Critter 1.6a32900.00.00.00.00.00.00.00.00.00.1 100.0
12Senpai 2.032030.00.00.00.00.00.00.00.00.00.00.0 
LOS color legend:
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Rating list
Testing profile
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Results table
Performance table
Score table
LOS table
Proportion of draws
White score
Number of 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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  Recalibrate current list to reference using all common engines


Created in 2005-2008 by CCRL team
Last games added on January 25, 2021