CCRL 40/15
Downloads and Statistics
May 8, 2021
Testing summary:
Total: 1'242'291 games
played by 2'843 programs

White wins: 425'658 (34.3%)
Black wins: 312'703 (25.2%)
Draws: 503'930 (40.6%)
White score: 54.5%

Free multi-CPU engines

Comparing 350 engines!
86 best versions of selected engines played 11201 games with each other

CCRL 40/15 Rating List — Free multi-CPU engines (Quote)

Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 15 minutes on an Intel i7-4770k.
Computed on May 8, 2021 with Bayeselo based on 1'242'291 games
Please refer to the "about" page for comments on engine inclusion

Color legend: Commercial, Free, Open source, Private.
Bold font - tested with 200 games or more. Normal font - less than 200 games.

RankNameRatingScoreAverage
Opponent
DrawsGamesLOS
Elo+
1Stockfish 13 64-bit 4CPU3548+19−1877.3%−181.845.3%1026 
54.1%
 Stockfish 2021-01-11 64-bit 4CPU3547+19−1975.2%−164.448.8%946
89.0%
 ShashChess 15.0 64-bit 4CPU3528+23−2275.1%−163.449.5%658
76.9%
 SugaR AI 1.00 64-bit 4CPU3516+26−2672.4%−142.953.4%468
55.1%
 Stockfish 12 64-bit 4CPU3514+19−1971.8%−140.156.0%841
95.2%
 Stockfish 2019-10-09 64-bit 4CPU3488+23−2374.7%−155.550.3%616
78.3%
 Stockfish 11 64-bit 4CPU3477+20−1973.0%−143.352.6%840
72.7%
 SugaR NN 1.1 64-bit 4CPU3469+16−1570.8%−132.252.4%1344
77.9%
 Stockfish 10 64-bit 4CPU3460+17−1673.4%−155.250.3%1227
55.2%
 SugaR 1.6.1 64-bit 4CPU3458+25−2569.0%−118.057.4%479
66.3%
 Stockfish 270918 64-bit 4CPU3450+28−2777.9%−188.943.3%457
72.1%
 ShashChess 8.0 64-bit 4CPU3441+15−1565.8%−94.463.7%1206
76.4%
 SugaR XPrO 1.5.3 64-bit 4CPU3430+24−2471.8%−144.151.3%544
54.2%
 Stockfish 9 64-bit 4CPU3428+15−1572.3%−152.850.5%1423
60.1%
 Igel 3.0.5 64-bit 4CPU3419+65−6551.9%−9.092.3%52
61.0%
2RubiChess 2.1 64-bit 4CPU3410+23−2347.6%+15.070.5%508
55.3%
 SugaR XPrO 1.4 64-bit 4CPU3408+20−2072.3%−150.551.8%840
55.2%
 asmFish 051117 64-bit 4CPU3406+19−1969.8%−130.555.7%819
66.7%
3Igel 3.0.0 64-bit 4CPU3399+22−2247.3%+15.770.0%566
56.9%
 SugaR XPrO 1.2 64-bit 4CPU3396+21−2070.4%−135.952.5%754
56.1%
4SlowChess Blitz 2.5 64-bit 4CPU3394+18−1846.6%+21.264.9%855
56.9%
5Komodo 12 64-bit 4CPU3392+17−1769.2%−125.352.0%1102
50.3%
 Pedone 3.1 64-bit 4CPU3392+53−5440.1%+58.759.4%96
51.8%
6Ethereal 12.75 64-bit 4CPU3390+15−1548.7%+10.267.9%1182
53.3%
 ShashChess Pro 1.0 64-bit 4CPU3389+33−3365.6%−94.561.7%256
60.2%
7Fire 8 64-bit 4CPU3383+17−1748.0%+14.866.1%946
53.7%
8Nemorino 6.00 64-bit 4CPU3382+17−1748.4%+7.061.6%1031
52.9%
 Komodo 11.01 64-bit 4CPU3381+29−2873.4%−155.846.9%416
64.4%
 Stockfish 8 64-bit 4CPU3375+13−1365.1%−96.062.1%1647
53.8%
 Nemorino 6.05 64-bit 4CPU3374+23−2344.8%+31.470.6%496
58.6%
 SugaR XPrO 1.3 64-bit 4CPU3370+23−2266.0%−102.757.4%598
71.2%
 Ethereal 12.25 64-bit 4CPU3361+22−2249.3%+5.771.0%544
54.3%
 Igel 2.9.0 64-bit 4CPU3359+17−1748.2%+13.460.6%1050
53.5%
 Igel 2.8.0 64-bit 4CPU3358+25−2553.6%−15.958.2%457
56.6%
 SlowChess Blitz 2.4 64-bit 4CPU3355+22−2146.2%+26.665.2%598
53.9%
 RubiChess 2.0 64-bit 4CPU3354+20−2042.4%+47.469.8%666
66.0%
 Ethereal 12.00 64-bit 4CPU3348+22−2250.9%−3.668.8%564
57.7%
 Komodo 10 64-bit 4CPU3344+22−2276.6%−172.444.0%700
53.7%
 Ethereal 11.75 64-bit 4CPU3343+21−2147.3%+14.965.0%614
57.3%
 SlowChess Blitz 2.3 64-bit 4CPU3340+20−2043.6%+40.264.9%680
69.7%
9Lc0 0.27.0 w703810 64-bit 4CPU3333+18−1843.5%+37.960.2%914
53.0%
10Booot 6.5 64-bit 4CPU3332+21−2236.5%+82.558.8%634
62.2%
11Xiphos 0.6 64-bit 4CPU3328+13−1340.5%+60.561.5%1760
56.8%
 SlowChess Blitz Classic 2.2 64-bit 4CPU3326+20−2043.7%+37.365.8%704
55.8%
 Stockfish 7 64-bit 4CPU3324+15−1567.0%−105.957.3%1304
56.7%
 Ethereal 11.53 64-bit 4CPU3321+23−2252.3%−12.564.0%542
57.6%
 Fire 7.1 64-bit 4CPU3319+11−1148.6%+9.161.0%2672
84.7%
12RofChade 2.3 64-bit 4CPU3310+14−1438.5%+73.859.5%1456
58.2%
 Xiphos 0.5 64-bit 4CPU3307+20−2046.1%+25.666.7%673
54.3%
 Komodo 9 64-bit 4CPU3306+20−1970.4%−124.352.7%804
63.5%
13Pedone 3.0 64-bit 4CPU3301+18−1837.1%+85.356.6%908
66.4%
 Booot 6.4 64-bit 4CPU3296+15−1538.2%+74.259.8%1337
49.8%
 Ethereal 11.25 64-bit 4CPU3296+21−2246.3%+23.665.5%588
51.1%
 Ethereal 11.00 64-bit 4CPU3295+19−1947.0%+18.363.2%778
62.8%
 RubiChess 1.8 64-bit 4CPU3291+19−1938.1%+71.861.1%814
55.7%
 Stockfish 6 64-bit 4CPU3289+14−1465.3%−94.357.3%1542
56.5%
 RubiChess 1.7.3 64-bit 4CPU3287+20−2048.3%+9.862.4%736
57.0%
 Fire 6.1 64-bit 4CPU3284+18−1848.5%+8.158.4%940
51.0%
14Laser 1.7 64-bit 4CPU3284+13−1340.5%+61.860.4%1829
54.8%
 Komodo 8 64-bit 4CPU3283+16−1669.8%−126.849.0%1298
68.6%
15Defenchess 2.2 64-bit 4CPU3277+14−1442.0%+51.360.2%1423
51.4%
 RofChade 2.202 64-bit 4CPU3277+18−1841.4%+52.959.8%858
63.2%
 SlowChess Blitz Classic 2.1 64-bit 4CPU3272+22−2242.3%+49.555.0%615
51.3%
 Ethereal 10.55 64-bit 4CPU3271+25−2549.8%−1.657.4%488
55.3%
16Fizbo 2 64-bit 4CPU3269+12−1243.3%+42.154.9%2131
59.4%
 Stockfish 5 64-bit 4CPU3267+15−1567.7%−109.454.0%1346
64.5%
 Fire 5 64-bit 4CPU3262+18−1846.9%+18.462.5%867
51.7%
17Schooner 2.2 64-bit 4CPU3262+26−2645.6%+27.660.7%420
55.8%
18Andscacs 0.94 64-bit 4CPU3259+18−1847.2%+18.454.2%907
54.8%
 Andscacs 0.95 64-bit 4CPU3258+16−1643.9%+38.060.6%1077
47.7%
 Booot 6.3.1 64-bit 4CPU3258+15−1543.0%+44.557.4%1366
70.6%
 Fizbo 1.9 64-bit 4CPU3252+17−1745.7%+26.255.5%1004
63.7%
 Xiphos 0.4 64-bit 4CPU3247+19−1943.8%+39.661.1%830
56.5%
 RofChade 2.1 64-bit 4CPU3245+25−2544.4%+36.560.0%452
69.2%
 Andscacs 0.921 64-bit 4CPU3237+16−1650.7%−6.647.5%1225
52.3%
 Andscacs 0.93 64-bit 4CPU3236+18−1842.9%+45.454.8%938
63.8%
 Stockfish DD 64-bit 4CPU3232+17−1763.0%−78.656.1%1032
47.8%
19Wasp 4.50 64-bit 4CPU3232+23−2347.6%+13.362.5%496
56.0%
20Arasan 22.2 64-bit 4CPU3230+28−2851.9%−12.155.9%372
57.7%
 Andscacs 0.91 64-bit 4CPU3226+22−2242.5%+47.759.2%596
51.3%
 Komodo 7a 64-bit 4CPU3226+18−1860.7%−65.459.0%897
51.2%
21Halogen 10 64-bit 4CPU3225+26−2648.2%+11.066.3%380
49.6%
 RubiChess 1.6 64-bit 4CPU3225+25−2559.5%−58.350.9%466
62.9%
 Andscacs 0.89 64-bit 4CPU3220+21−2145.9%+28.155.0%662
60.9%
 Komodo TCEC 64-bit 4CPU3216+18−1760.7%−67.554.8%971
53.6%
 Arasan 21.4 64-bit 4CPU3214+25−2545.0%+26.455.6%464
50.6%
 Booot 6.2 64-bit 4CPU3214+14−1442.9%+46.359.3%1517
51.3%
 Laser 1.6 64-bit 4CPU3214+16−1643.5%+43.455.2%1124
50.3%
 NirvanaChess 2.5 64-bit 4CPU3213+43−4351.0%−6.362.0%150
54.3%
 Schooner 2.1 64-bit 4CPU3211+23−2344.6%+33.355.5%550
51.7%
 Andscacs 0.88 64-bit 4CPU3210+28−2845.0%+31.054.8%387
53.2%
 Komodo 6 64-bit 4CPU3209+17−1658.6%−52.856.7%1065
62.1%
 Andscacs 0.90 64-bit 4CPU3204+24−2450.3%+2.655.1%515
50.6%
 Stockfish 4 64-bit 4CPU3204+16−1660.1%−60.359.1%1086
60.8%
 Komodo 5.1 64-bit 4CPU3200+19−1960.3%−63.154.9%779
57.5%
 Andscacs 0.872 64-bit 4CPU3197+24−2451.3%−4.658.8%476
51.0%
 Schooner 2.0.34 64-bit 4CPU3197+20−2049.3%+3.357.9%734
52.6%
 Fire 4 64-bit 4CPU3196+12−1246.5%+22.159.7%1885
57.4%
 Arasan 21.3 64-bit 4CPU3193+30−3046.7%+25.855.7%314
63.1%
 Ethereal 10.00 64-bit 4CPU3187+20−2053.4%−23.650.8%788
60.9%
22Vajolet2 2.8 64-bit 4CPU3182+27−2747.7%+11.863.5%370
53.6%
 Vajolet2 2.7 64-bit 4CPU3180+24−2451.0%−6.555.8%507
52.1%
23Houdini 1.5a 64-bit 4CPU3179+17−1759.3%−61.845.8%1111
50.8%
 SlowChess Blitz Classic 1.9 64-bit 4CPU3179+27−2753.3%−19.158.0%383
51.9%
24Gull 3 64-bit 4CPU3178+9−942.5%+48.554.2%3783
53.1%
 Fizbo 1.8 64-bit 4CPU3177+20−2143.9%+41.949.3%724
50.5%
25NirvanaChess 2.4 64-bit 4CPU3177+13−1341.8%+55.354.5%1852
53.4%
 Gull 2.8b 64-bit 4CPU3176+19−1949.1%+4.051.8%797
51.6%
 Xiphos 0.3 64-bit 4CPU3176+21−2149.2%+3.054.2%660
58.0%
 RofChade 2.0 64-bit 4CPU3172+21−2149.7%+1.857.7%620
54.1%
26Equinox 3.20 64-bit 4CPU3171+11−1142.2%+50.759.0%2671
56.6%
 Arasan 21.2 64-bit 4CPU3168+30−3052.2%−11.760.6%302
57.4%
 Booot 6.1 64-bit 4CPU3165+20−2042.0%+49.360.3%726
50.9%
 Arasan 21.1 64-bit 4CPU3164+27−2751.2%−7.159.5%383
50.9%
27ChessBrainVB 3.72 4CPU3164+30−3045.0%+30.751.3%320
49.1%
 Stockfish 3 64-bit 4CPU3164+21−2156.0%−35.057.8%663
51.9%
 ChessBrainVB 3.74 4CPU3161+128−13046.9%+18.056.3%16
50.6%
 RubiChess 1.5 64-bit 4CPU3160+29−2952.4%−14.054.3%348
52.1%
 Equinox 3.30 64-bit 4CPU3159+18−1843.9%+39.158.9%896
60.2%
28Critter 1.6a 64-bit 4CPU3157+8−845.3%+31.654.6%5429
69.8%
29Hannibal 1.7 64-bit 4CPU3153+14−1442.3%+47.454.5%1577
59.7%
 NirvanaChess 2.3 64-bit 4CPU3150+18−1841.4%+55.156.8%869
56.0%
 Fire 3.0 64-bit 4CPU3148+17−1749.5%+2.658.2%948
53.4%
30Bouquet 1.8 64-bit 4CPU3147+11−1143.6%+41.256.7%2427
50.6%
 Critter 1.4 64-bit 4CPU3147+17−1758.1%−50.754.8%989
51.2%
 Nemorino 5.00 64-bit 4CPU3146+18−1848.1%+10.452.3%878
54.8%
 Stockfish 2.2.2 64-bit 4CPU3145+16−1659.2%−56.653.4%1141
52.6%
 Andscacs 0.86 64-bit 4CPU3144+20−2042.8%+46.653.9%761
52.0%
 Critter 1.2 64-bit 4CPU3143+20−2058.9%−54.852.9%762
59.6%
 Gull 2.3 64-bit 4CPU3140+17−1747.4%+14.959.3%982
48.9%
 Laser 1.5 64-bit 4CPU3140+20−2049.4%+8.454.5%723
50.4%
 Stockfish 2.3.1 64-bit 4CPU3140+19−1955.4%−33.052.5%846
55.5%
31Texel 1.07 64-bit 4CPU3139+14−1449.3%+5.849.2%1636
53.2%
 NirvanaChess 2.2 64-bit 4CPU3138+17−1741.5%+54.857.4%1001
50.6%
 Pedone 1.8 64-bit 4CPU3137+28−2846.7%+19.057.4%350
51.6%
32Protector 1.9.0 64-bit 4CPU3137+15−1546.4%+24.453.9%1338
56.3%
33Alfil 15.7 64-bit 4CPU3135+17−1742.9%+48.156.3%1006
49.5%
 Wasp 3.75 64-bit 4CPU3135+28−2849.1%+2.757.2%376
53.4%
 Vajolet2 2.6.1 64-bit 4CPU3133+21−2150.8%−4.260.3%605
54.9%
 Andscacs 0.85 64-bit 4CPU3131+25−2543.9%+42.953.1%467
50.8%
 Igel 2.3.1 64-bit 4CPU3131+27−2750.2%−2.353.2%406
52.6%
 Bouquet 1.5 64-bit 4CPU3130+23−2346.4%+20.263.6%500
49.9%
 Sting SF 6 64-bit 4CPU3130+28−2850.8%−6.761.0%354
50.8%
 Texel 1.06 64-bit 4CPU3130+20−2046.1%+24.953.6%739
50.4%
 Sting SF 4.8.4 64-bit 4CPU3129+29−2953.3%−20.662.4%330
57.5%
 DeepSaros 4.1.6 64-bit 4CPU3126+26−2645.2%+28.257.5%419
51.4%
 Pedone 1.9 64-bit 4CPU3125+28−2849.4%+1.055.4%354
50.7%
 Stockfish 2.0.1 64-bit 4CPU3124+24−2456.4%−40.248.6%514
51.3%
 Wasp 3.60 64-bit 4CPU3124+33−3345.6%+25.750.4%264
52.8%
 Protector 1.8.0 64-bit 4CPU3122+28−2750.4%−1.554.7%386
54.0%
34‑35BlackMamba 2.0 64-bit 4CPU3121+15−1544.2%+37.454.3%1408
47.9%
 ChessBrainVB 3.68 4CPU3121+26−2649.2%+4.551.6%428
50.4%
 Gull 3.1 64-bit 4CPU3121+30−3045.4%+33.845.1%359
50.4%
34‑35iCE 4.0 64-bit 4CPU3121+26−2646.9%+15.352.6%426
57.1%
 Arasan 20.4.1 64-bit 4CPU3118+26−2551.7%−11.050.2%452
49.0%
 Fizbo 1.7 64-bit 4CPU3118+27−2756.1%−38.552.2%410
54.9%
 Elektro 1.2 64-bit 4CPU3116+23−2346.1%+26.955.5%546
51.1%
 Sting SF 5 64-bit 4CPU3115+25−2548.1%+13.054.0%465
53.5%
 Stockfish 1.9.1 64-bit 4CPU3114+22−2259.9%−67.947.1%665
58.0%
 IvanHoe 9.46h 64-bit 4CPU3111+14−1453.2%−19.259.5%1542
51.5%
 Stockfish 2.1.1 64-bit 4CPU3111+27−2754.7%−29.648.3%406
52.8%
 RobboLito 0.21Q 64-bit 4CPU3109+22−2250.9%−5.662.7%569
53.5%
 Hannibal 1.5 64-bit 4CPU3108+19−1953.2%−20.557.1%819
53.2%
 Sting SF 3 64-bit 4CPU3107+21−2147.7%+11.558.5%644
51.3%
 Bouquet 1.6 64-bit 4CPU3106+21−2150.0%+0.060.7%641
50.3%
36Senpai 2.0 64-bit 4CPU3106+19−1950.6%−5.348.7%866
51.3%
 Sting SF 2 64-bit 4CPU3106+27−2748.8%+8.058.1%375
49.2%
 Sting SF 9 64-bit 4CPU3106+28−2848.0%+11.047.2%381
49.5%
 Stockfish 1.8 64-bit 4CPU3106+18−1860.4%−70.350.6%942
51.9%
37Winter 0.7 64-bit 4CPU3105+25−2645.1%+32.047.1%463
53.7%
 ChessBrainVB 3.66 4CPU3104+28−2854.2%−27.548.7%378
53.6%
 Andscacs 0.83 64-bit 4CPU3102+29−2946.6%+18.851.2%338
50.3%
 Stockfish 1.7.1 64-bit 4CPU3102+18−1860.4%−68.452.6%882
54.2%
 Xiphos 0.2.2 64-bit 4CPU3100+26−2647.3%+14.053.6%414
53.2%
 Wasp 3.50 64-bit 4CPU3099+19−1950.4%−5.253.6%785
56.7%
 Gull 2.2 64-bit 4CPU3096+25−2544.5%+31.154.8%469
52.4%
 Vajolet2 2.5 64-bit 4CPU3095+24−2451.5%−9.954.0%493
54.8%
38Naum 4.6 64-bit 4CPU3093+14−1448.1%+11.854.3%1544
50.6%
 Nemorino 4.00 64-bit 4CPU3093+22−2250.0%+1.152.9%624
49.0%
 NirvanaChess 2.1c 64-bit 4CPU3093+23−2345.2%+31.347.7%608
51.9%
 Sting SF 4 64-bit 4CPU3092+23−2341.9%+49.548.9%562
62.6%
 Arasan 20.3 64-bit 4CPU3086+32−3252.5%−20.147.4%302
50.3%
 Laser 1.4 64-bit 4CPU3086+19−1949.6%+0.045.7%843
51.7%
 Critter 1.01 64-bit 4CPU3085+27−2746.1%+22.154.8%385
51.3%
 Pedone 1.7 64-bit 4CPU3084+19−1948.2%+11.656.4%801
56.2%
 Texel 1.05 64-bit 4CPU3082+17−1747.3%+18.951.4%1016
55.6%
 Andscacs 0.82 64-bit 4CPU3080+29−2950.6%−3.155.2%330
57.0%
 Critter 0.90 64-bit 4CPU3076+31−3147.6%+13.346.5%316
52.2%
 Andscacs 0.81 64-bit 4CPU3075+31−3248.7%+5.449.3%300
49.4%
 Hannibal 1.4b 64-bit 4CPU3075+15−1542.3%+47.551.3%1332
57.2%
 Protector 1.7.0 64-bit 4CPU3073+19−1944.1%+36.650.6%834
52.0%
 Demolito 2019-04-27 64-bit 4CPU3071+66−6650.0%−0.238.9%72
50.5%
39Amoeba 3.1 64-bit 4CPU3070+34−3442.1%+48.749.6%254
52.1%
 Nemorino 3.0 64-bit 4CPU3069+27−2747.9%+13.646.1%427
51.4%
 Protector 1.6.0 64-bit 4CPU3069+21−2243.2%+44.250.2%656
52.4%
40Rodent III 0.238 64-bit 4CPU3068+20−2047.2%+14.650.0%742
54.2%
 Rodent III 0.276 64-bit 4CPU3066+29−2949.6%+3.258.2%337
52.6%
 RubiChess 1.3 64-bit 4CPU3065+22−2252.8%−18.444.2%642
54.9%
 Defenchess 1.1f 64-bit 4CPU3063+18−1851.7%−12.145.3%916
49.2%
41‑42Demolito 2018-10-29 64-bit 4CPU3063+30−3048.6%+5.651.9%322
49.6%
41‑42Topple 0.7.5 64-bit 4CPU3063+28−2851.6%−10.846.4%394
60.6%
 Wasp 3.0 64-bit 4CPU3058+25−2551.1%−8.355.0%462
55.6%
 Texel 1.04 64-bit 4CPU3056+21−2143.1%+42.947.8%722
54.4%
 Alfil 15.8 64-bit 4CPU3054+22−2253.9%−24.147.9%631
50.7%
 NirvanaChess 2.0a 64-bit 4CPU3054+30−3044.7%+35.750.1%337
50.5%
 Protector 1.5.0 64-bit 4CPU3054+18−1842.5%+47.247.4%952
55.8%
 Amoeba 3.0 64-bit 4CPU3051+26−2654.8%−32.144.8%466
51.6%
 Pedone 1.6 64-bit 4CPU3050+23−2349.5%+3.557.7%508
54.7%
 Ethereal 9.00 64-bit 4CPU3048+23−2346.8%+19.345.1%570
65.1%
 Arasan 19.2 64-bit 4CPU3041+31−3151.0%−6.754.8%305
51.2%
 Vajolet2 2.2 64-bit 4CPU3040+27−2747.0%+15.148.7%423
49.2%
 Vajolet2 2.4 64-bit 4CPU3040+19−1947.2%+18.645.7%878
59.7%
 Gull R375 64-bit 4CPU3037+22−2243.4%+36.857.4%605
49.2%
 Wasp 2.6 64-bit 4CPU3037+18−1848.9%+7.947.2%968
54.2%
 Stockfish 1.6.3 64-bit 4CPU3035+22−2257.5%−49.645.3%651
58.1%
 Critter 0.80 64-bit 4CPU3031+30−3050.9%−8.348.3%321
50.7%
 Hannibal 1.3 64-bit 4CPU3031+22−2243.0%+42.948.6%642
50.3%
 Pedone 1.5 64-bit 4CPU3031+31−3149.5%+3.351.6%304
52.7%
 Wasp 2.01 64-bit 4CPU3029+30−3055.3%−31.954.5%321
55.3%
 Arasan 20.0 64-bit 4CPU3026+30−3047.4%+16.853.4%328
51.6%
 Vajolet2 2.3 64-bit 4CPU3026+31−3145.2%+25.053.5%303
53.9%
43‑44Bobcat 8.0 64-bit 4CPU3024+21−2148.3%+11.153.5%636
50.4%
43‑44Pirarucu 2.7.4 64-bit 4CPU3024+21−2053.6%−27.647.6%735
52.0%
 Pirarucu 2.9.5 64-bit 4CPU3023+33−3350.0%−2.753.2%269
52.1%
 Andscacs 0.80 64-bit 4CPU3021+31−3150.2%−0.946.7%317
49.8%
 Senpai 1.0 64-bit 4CPU3021+16−1746.2%+21.553.5%1095
69.5%
45Rybka 2.3.2a 64-bit 4CPU3016+13−1362.8%−86.243.9%1928
57.0%
46Spike 1.4 Leiden 4CPU3014+11−1145.2%+29.647.7%2862
49.5%
 Winter 0.6 64-bit 4CPU3014+32−3253.0%−27.135.6%329
55.5%
47Crafty 25.2 64-bit 4CPU3012+16−1648.5%+9.142.5%1279
51.7%
48chess22k 1.10 64-bit 4CPU3011+22−2246.7%+16.743.7%680
52.6%
 Arasan 19.0.1 64-bit 4CPU3010+32−3151.3%−12.140.9%318
49.9%
 Nemorino 2.00 64-bit 4CPU3010+30−3047.0%+16.459.6%302
55.2%
49Cheng 4.39 64-bit 4CPU3008+15−1549.4%+4.048.6%1333
48.6%
 Laser 1.3 64-bit 4CPU3008+30−3047.2%+15.955.8%321
50.6%
 Texel 1.03 64-bit 4CPU3008+31−3150.3%−1.247.0%313
66.9%
 Pedone 1.4.1 64-bit 4CPU2998+30−3048.5%+8.455.7%305
52.7%
 Vajolet2 2.1 64-bit 4CPU2997+25−2550.9%−3.848.5%462
54.4%
 Rodent III 0.210 64-bit 4CPU2995+28−2845.1%+32.742.5%402
57.3%
 Fizbo 1.5 64-bit 4CPU2991+27−2752.6%−16.348.5%410
68.1%
50Scorpio 2.8 64-bit 4CPU2982+25−2548.8%+7.246.3%492
53.5%
 Protector 1.4.0 64-bit 4CPU2981+19−1942.5%+48.742.9%912
55.1%
 Cheng4 0.38 64-bit 4CPU2979+24−2446.0%+22.942.4%531
53.5%
 Bobcat 7.6 64-bit 4CPU2977+31−3148.6%+8.641.8%318
59.3%
 Rybka 2.2 64-bit 4CPU2972+20−1962.8%−87.241.2%879
51.8%
 Arasan 18.3 64-bit 4CPU2971+30−3046.6%+20.946.8%327
54.8%
 Arasan 18.2 64-bit 4CPU2969+28−2851.9%−14.950.3%388
48.7%
51EXchess 7.97b 64-bit 4CPU2969+17−1847.4%+19.045.9%1017
57.8%
52Spark 1.0 64-bit 4CPU2967+13−1345.0%+32.246.6%1787
49.5%
 Stockfish 1.5.1 64-bit 4CPU2967+25−2453.7%−23.047.7%495
63.7%
 Demolito 2017-08-26 64-bit 4CPU2961+21−2140.2%+63.940.8%748
49.8%
 Winter 0.5 64-bit 4CPU2961+26−2650.4%−4.938.3%470
53.2%
 Protector 1.3.6 64-bit 4CPU2960+32−3246.6%+18.344.3%307
58.6%
53Toga II 4.0 64-bit 4CPU2956+19−1941.4%+56.540.4%958
50.6%
 EXchess 7.88b 64-bit 4CPU2955+29−2945.4%+29.948.6%356
53.2%
 Fizbo 1.31 64-bit 4CPU2954+30−3051.1%−7.041.9%358
61.5%
 Crafty 25.0 64-bit 4CPU2948+25−2548.1%+12.547.9%468
54.5%
 Stockfish 1.4 64-bit 4CPU2946+17−1754.2%−29.042.2%1131
55.7%
 Scorpio 2.7.9 64-bit 4CPU2944+22−2246.7%+20.640.5%659
59.7%
54‑55Gaviota 1.0 64-bit 4CPU2940+16−1647.3%+16.745.4%1256
51.8%
54‑55Tucano 7.07 64-bit 4CPU2940+33−3351.5%−10.444.7%291
51.9%
 EXchess 7.51b 64-bit 4CPU2938+32−3249.5%+5.545.6%296
52.0%
56The Baron 3.44 64-bit 4CPU2937+27−2846.8%+21.145.3%402
55.9%
57Marvin 3.3.2 64-bit 4CPU2934+36−3743.4%+40.044.7%228
51.6%
 Arasan 17.5 64-bit 4CPU2933+27−2748.4%+9.945.1%406
56.1%
 Bobcat 7.1 64-bit 4CPU2930+31−3147.5%+15.745.9%314
48.6%
 EXchess 7.71b 64-bit 4CPU2930+28−2853.3%−22.443.2%403
50.7%
 Fizbo 1.4 64-bit 4CPU2930+28−2845.9%+25.244.7%394
49.1%
 Spark 0.4 64-bit 4CPU2930+21−2143.0%+49.145.2%703
53.4%
 Ethereal 8.62 64-bit 4CPU2929+22−2244.2%+35.749.7%600
58.8%
 Spark 0.3 64-bit 4CPU2925+23−2346.5%+20.849.7%572
52.1%
 Arasan 18.0 64-bit 4CPU2924+29−2947.2%+16.141.5%378
50.4%
58Thinker 5.4d Inert 64-bit 4CPU2924+23−2346.0%+24.249.7%587
57.7%
 Thinker 5.4c Inert 64-bit 4CPU2921+15−1548.1%+13.339.4%1502
53.3%
 Marvin 3.2.0 64-bit 4CPU2920+21−2153.7%−26.143.0%698
58.7%
 Toga II 3.0 4CPU2917+22−2345.6%+27.049.0%592
59.9%
59DisasterArea 1.65 64-bit 4CPU2913+21−2144.2%+35.946.1%709
55.5%
60Gogobello 2.0 64-bit 4CPU2911+25−2550.8%−7.439.1%522
56.1%
 Crafty 23.8 64-bit 4CPU2907+32−3345.8%+27.647.0%287
59.0%
 Thinker 5.4a Inert 64-bit 4CPU2903+23−2347.3%+19.445.4%560
50.9%
 Toga II 1.4.1SE 4CPU2902+13−1348.5%+10.941.6%2041
51.1%
 Asymptote 0.6 64-bit 4CPU2901+95−9548.3%+3.056.7%30
50.0%
 The Baron 3.41 64-bit 4CPU2901+20−2039.1%+70.643.8%800
62.4%
 Cheng4 0.36c 64-bit 4CPU2895+30−3048.8%+6.246.6%326
50.9%
61‑63Bright 0.4a 4CPU2894+15−1547.4%+17.441.1%1495
52.6%
61‑63Glaurung 2.2 64-bit 4CPU2894+16−1647.0%+18.940.7%1259
49.2%
61‑63Tornado 6.0 64-bit 4CPU2894+26−2645.5%+27.743.3%469
51.6%
 Tornado 8.0 64-bit 4CPU2893+19−2045.2%+30.939.0%881
54.2%
 Tornado 7.0 64-bit 4CPU2892+25−2545.3%+30.539.2%502
56.4%
 Bright 0.5c 4CPU2889+23−2347.2%+19.242.9%616
57.0%
64Octochess r5506 64-bit 4CPU2886+20−2144.5%+35.846.7%715
56.0%
65MinkoChess 1.3 64-bit 4CPU2884+21−2146.0%+24.343.7%725
50.6%
 Tornado 4.88 64-bit 4CPU2884+26−2646.0%+24.141.5%479
50.3%
 Toga II 1.4 beta5c 4CPU2883+18−1851.7%−11.545.8%996
58.6%
 Pedone 1.3 64-bit 4CPU2880+29−2946.6%+19.751.0%355
51.0%
 Fruit Reloaded 3.2.1 64-bit 4CPU2879+18−1838.8%+74.639.1%1024
56.2%
 Crafty 24.1 64-bit 4CPU2876+31−3243.5%+41.639.1%322
56.8%
 Scorpio 2.7.6 64-bit 4CPU2873+26−2647.4%+16.344.0%445
64.3%
 Glaurung 2.1 64-bit 4CPU2866+19−1942.8%+51.241.3%946
53.9%
 Bobcat 6.4b 64-bit 4CPU2865+27−2748.3%+11.346.5%415
52.3%
 The Baron 3.29 64-bit 4CPU2864+25−2546.3%+22.543.1%489
51.5%
 EXchess 7.18b 64-bit 4CPU2863+33−3347.3%+16.638.4%292
59.9%
 Gaviota 0.86 64-bit 4CPU2858+24−2353.4%−26.532.6%617
49.3%
 Scorpio 2.7.5 64-bit 4CPU2858+33−3345.7%+25.050.0%266
52.8%
 Crafty 23.4 64-bit 4CPU2857+34−3446.9%+19.035.7%272
51.0%
 Arasan 16.3 64-bit 4CPU2856+34−3449.1%+4.540.2%276
53.8%
 Scorpio 2.7.7 64-bit 4CPU2854+32−3242.9%+44.541.3%310
51.3%
66Monolith 1.0 64-bit 4CPU2853+22−2148.6%+8.243.0%693
53.6%
67Counter 3.2 64-bit 4CPU2851+32−3250.7%−4.640.2%301
56.9%
 Igel 1.9.0 64-bit 4CPU2847+31−3241.0%+59.639.5%324
60.7%
68Shield 2.1 64-bit 4CPU2842+24−2448.7%+9.436.0%594
51.2%
69Cheese 2.0 64-bit 4CPU2841+30−3045.8%+26.539.2%355
60.4%
70‑71BugChess2 1.9 64-bit 4CPU2836+21−2143.4%+44.638.2%738
50.1%
70‑71Loop 13.6 (Loop 2007) 64-bit 4CPU2836+19−1948.3%+12.342.8%894
51.8%
 Crafty 23.3 64-bit 4CPU2835+31−3241.5%+55.438.2%325
64.6%
 Bright 0.3a 4CPU2828+18−1842.4%+51.241.8%988
52.7%
 Glaurung 2.0.1 64-bit 4CPU2827+17−1743.8%+39.143.5%1100
65.7%
 Octochess r5190 64-bit 4CPU2821+24−2445.9%+24.144.5%555
57.2%
 Pedone 1.1 64-bit 4CPU2817+31−3153.7%−31.339.5%347
51.6%
 Arminius 2018-12-23 64-bit 4CPU2816+44−4544.2%+41.036.4%165
53.7%
72Jonny 4.00 4CPU2814+25−2543.6%+42.335.0%540
70.8%
 Bright 0.2c 4CPU2804+21−2143.9%+40.643.2%724
59.6%
 Pedone 1.2 64-bit 4CPU2799+36−3648.4%+9.242.3%246
63.9%
 Crafty 23.1 64-bit 4CPU2790+36−3743.8%+42.536.9%241
53.7%
 Laser 1.0 64-bit 4CPU2787+37−3836.3%+90.039.2%227
58.4%
 Bagatur 1.7a 64-bit 4CPU2772+131−13445.0%+31.220.0%20
54.8%
 Glaurung 1.2.1 64-bit 4CPU2764+19−1940.2%+64.338.1%967
69.2%
 Crafty 23.0 64-bit 4CPU2757+18−1839.0%+77.934.1%1042
69.0%
73Fridolin 3.10 64-bit 4CPU2747+33−3349.5%−0.031.5%308
55.6%
 Alfil 13.1 64-bit 4CPU2744+28−2841.8%+53.434.1%440
76.8%
 Scorpio 2.0 32-bit 4CPU2730+24−2433.4%+114.936.7%607
62.8%
74Nebula 2.0 64-bit 4CPU2725+20−2045.1%+35.234.1%866
66.1%
 Scorpio 2.1 64-bit 4CPU2717+27−2734.4%+109.331.6%490
80.2%
 Igel 1.4.1 64-bit 4CPU2700+28−2850.7%−6.926.3%448
76.8%
75Hamsters 0.7.1 4CPU2684+32−3252.4%−13.936.2%318
54.3%
76RedQueen 1.1.98 64-bit 4CPU2682+27−2739.4%+80.428.5%494
65.3%
77ECE X3 64-bit 4CPU2675+23−2341.5%+68.523.4%709
57.3%
78Pharaon 3.5.1 4CPU2672+26−2643.6%+41.429.7%518
61.9%
79Jellyfish 1.1 64-bit 4CPU2666+29−2953.3%−25.432.3%403
60.3%
 RedQueen 1.1.97 64-bit 4CPU2661+22−2245.7%+27.033.3%726
71.5%
80Ghost 3.1 64-bit 4CPU2650+30−2953.9%−25.328.5%393
53.6%
81Arminius 2015-08-06 64-bit 4CPU2649+33−3344.2%+37.636.1%302
52.2%
 Gaviota 0.83 64-bit 4CPU2647+25−2547.3%+20.827.9%566
99.6%
 Fridolin 2.00 64-bit 4CPU2587+34−3441.9%+57.531.3%297
93.1%
82‑83Delphil 3.2 64-bit 4CPU2553+31−3138.2%+85.730.5%374
50.2%
82‑83Jazz 840 64-bit 4CPU2553+20−2057.8%−63.725.3%1000
91.7%
84Nemeton 1.8 4CPU2529+27−2749.9%+1.927.2%496
86.6%
85Jumbo 0.6.66 64-bit 4CPU2508+28−2850.0%−1.033.0%433
88.0%
86Myrddin 0.87 64-bit 4CPU2482+35−3538.9%+80.928.4%296
85.9%
 Invictus r228 64-bit 4CPU2340+242−29528.6%+166.60.0%7
 

Results matrix

Free multi-CPU engines (best versions only), top 12
#NameElo123456789101112
1Stockfish 13 64-bit 4CPU3548 15 − 5
+10−0=10
+16
26.5 − 7.5
+19−0=15
+28
41.5 − 10.5
+31−0=21
+41
 43 − 13
+30−0=26
+11
38.5 − 11.5
+27−0=23
+2
40 − 12
+28−0=24
+3
27 − 11
+16−0=22
−92
22.5 − 9.5
+13−0=19
−100
42.5 − 7.5
+35−0=15
+35
88 − 16
+72−0=32
+10
2RubiChess 2.1 64-bit 4CPU34105 − 15
+0−10=10
−16
 25.5 − 24.5
+2−1=47
−6
10.5 − 9.5
+3−2=15
−5
 9 − 11
+1−3=16
−44
31 − 19
+16−4=30
+41
10 − 10
+1−1=18
−29
45 − 23
+24−2=42
+11
13 − 7
+7−1=12
+6
13 − 7
+7−1=12
+2
 
3Igel 3.0.0 64-bit 4CPU33997.5 − 26.5
+0−19=15
−28
24.5 − 25.5
+1−2=47
+6
 16 − 18
+2−4=28
−18
 14.5 − 17.5
+1−4=27
−31
14 − 16
+4−6=20
−32
15 − 15
+5−5=20
−17
18.5 − 11.5
+8−1=21
−3
29.5 − 16.5
+15−2=29
+10
19.5 − 8.5
+13−2=13
+50
 
4SlowChess Blitz 2.5 64-bit 4CPU339410.5 − 41.5
+0−31=21
−41
9.5 − 10.5
+2−3=15
+5
18 − 16
+4−2=28
+18
  17 − 15
+7−5=20
+12
27 − 27
+8−8=38
−10
18 − 14
+5−1=26
+19
24 − 14
+11−1=26
+8
17 − 15
+7−5=20
−43
18 − 14
+6−2=24
−32
21.5 − 10.5
+15−4=13
+25
5Komodo 12 64-bit 4CPU3392            
6Ethereal 12.75 64-bit 4CPU339013 − 43
+0−30=26
−11
11 − 9
+3−1=16
+44
17.5 − 14.5
+4−1=27
+31
15 − 17
+5−7=20
−12
  26.5 − 27.5
+7−8=39
−12
17 − 15
+5−3=24
+6
21 − 17
+7−3=28
−29
18.5 − 13.5
+6−1=25
−17
17.5 − 12.5
+6−1=23
−19
19 − 11
+9−1=20
−7
7Fire 8 64-bit 4CPU338311.5 − 38.5
+0−27=23
−2
19 − 31
+4−16=30
−41
16 − 14
+6−4=20
+32
27 − 27
+8−8=38
+10
 27.5 − 26.5
+8−7=39
+12
 24.5 − 27.5
+6−9=37
−16
21.5 − 14.5
+9−2=25
+3
30 − 16
+14−0=32
+31
34.5 − 17.5
+18−1=33
+34
35.5 − 16.5
+20−1=31
+29
8Nemorino 6.00 64-bit 4CPU338212 − 40
+0−28=24
−3
10 − 10
+1−1=18
+29
15 − 15
+5−5=20
+17
14 − 18
+1−5=26
−19
 15 − 17
+3−5=24
−6
27.5 − 24.5
+9−6=37
+16
 32.5 − 19.5
+20−7=25
+26
 19 − 13
+8−2=22
−4
21 − 11
+13−3=16
+21
9Lc0 0.27.0 w703810 64-bit 4CPU333311 − 27
+0−16=22
+92
23 − 45
+2−24=42
−11
11.5 − 18.5
+1−8=21
+3
14 − 24
+1−11=26
−8
 17 − 21
+3−7=28
+29
14.5 − 21.5
+2−9=25
−3
19.5 − 32.5
+7−20=25
−26
 50 − 46
+22−18=56
+9
19.5 − 14.5
+10−5=19
+36
18 − 18
+6−6=24
−24
10Booot 6.5 64-bit 4CPU33329.5 − 22.5
+0−13=19
+100
7 − 13
+1−7=12
−6
16.5 − 29.5
+2−15=29
−10
15 − 17
+5−7=20
+43
 13.5 − 18.5
+1−6=25
+17
16 − 30
+0−14=32
−31
 46 − 50
+18−22=56
−9
 13 − 19
+1−7=24
−53
 
11Xiphos 0.6 64-bit 4CPU33287.5 − 42.5
+0−35=15
−35
7 − 13
+1−7=12
−2
8.5 − 19.5
+2−13=13
−50
14 − 18
+2−6=24
+32
 12.5 − 17.5
+1−6=23
+19
17.5 − 34.5
+1−18=33
−34
13 − 19
+2−8=22
+4
14.5 − 19.5
+5−10=19
−36
19 − 13
+7−1=24
+53
 16 − 16
+4−4=24
−19
12RofChade 2.3 64-bit 4CPU331016 − 88
+0−72=32
−10
  10.5 − 21.5
+4−15=13
−25
 11 − 19
+1−9=20
+7
16.5 − 35.5
+1−20=31
−29
11 − 21
+3−13=16
−21
18 − 18
+6−6=24
+24
 16 − 16
+4−4=24
+19
 
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 multi-CPU engines (best versions only), top 12
#NameElo123456789101112
1Stockfish 13 64-bit 4CPU3548 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2RubiChess 2.1 64-bit 4CPU34100.0 75.585.287.491.396.596.8100.0100.0100.0100.0
3Igel 3.0.0 64-bit 4CPU33990.024.5 64.169.174.987.488.9100.0100.0100.0100.0
4SlowChess Blitz 2.5 64-bit 4CPU33940.014.835.9 56.962.980.983.1100.0100.0100.0100.0
5Komodo 12 64-bit 4CPU33920.012.630.943.1 55.073.977.1100.0100.0100.0100.0
6Ethereal 12.75 64-bit 4CPU33900.08.725.137.145.0 72.675.8100.0100.0100.0100.0
7Fire 8 64-bit 4CPU33830.03.512.619.126.127.4 53.7100.0100.0100.0100.0
8Nemorino 6.00 64-bit 4CPU33820.03.211.116.922.924.246.3 100.0100.0100.0100.0
9Lc0 0.27.0 w703810 64-bit 4CPU33330.00.00.00.00.00.00.00.0 53.067.397.7
10Booot 6.5 64-bit 4CPU33320.00.00.00.00.00.00.00.047.0 62.295.0
11Xiphos 0.6 64-bit 4CPU33280.00.00.00.00.00.00.00.032.737.8 97.1
12RofChade 2.3 64-bit 4CPU33100.00.00.00.00.00.00.00.02.35.02.9 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

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 May 8, 2021