CCRL 40/15
Downloads and Statistics
May 15, 2021
Testing summary:
Total: 1'244'261 games
played by 2'847 programs

White wins: 426'196 (34.3%)
Black wins: 313'011 (25.2%)
Draws: 505'054 (40.6%)
White score: 54.5%

Free multi-CPU engines

Comparing 350 engines!
86 best versions of selected engines played 10871 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 15, 2021 with Bayeselo based on 1'244'261 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%−181.245.4%1034 
54.5%
 Stockfish 2021-01-11 64-bit 4CPU3547+19−1975.2%−164.048.8%954
90.2%
 ShashChess 15.0 64-bit 4CPU3528+22−2274.9%−162.949.8%666
74.5%
 SugaR AI 1.00 64-bit 4CPU3517+26−2572.5%−143.453.4%476
56.4%
 Stockfish 12 64-bit 4CPU3514+19−1971.8%−139.956.0%841
95.1%
 Stockfish 2019-10-09 64-bit 4CPU3489+23−2374.7%−156.350.3%616
78.3%
 Stockfish 11 64-bit 4CPU3477+20−1973.0%−143.152.6%840
72.6%
 SugaR NN 1.1 64-bit 4CPU3469+15−1570.8%−131.952.4%1344
77.5%
 Stockfish 10 64-bit 4CPU3461+17−1673.4%−155.750.3%1227
55.2%
 SugaR 1.6.1 64-bit 4CPU3459+25−2569.0%−118.557.4%479
66.3%
 Stockfish 270918 64-bit 4CPU3451+28−2777.9%−189.343.3%457
72.3%
 ShashChess 8.0 64-bit 4CPU3441+15−1565.8%−94.163.7%1206
76.2%
 SugaR XPrO 1.5.3 64-bit 4CPU3430+24−2471.8%−143.651.3%544
54.2%
 Stockfish 9 64-bit 4CPU3429+15−1572.3%−153.350.5%1423
74.5%
2Igel 3.0.5 64-bit 4CPU3416+35−3547.6%+15.375.0%208
64.1%
3RubiChess 2.1 64-bit 4CPU3409+20−2047.7%+15.069.5%643
51.4%
 SugaR XPrO 1.4 64-bit 4CPU3408+20−2072.3%−150.051.8%840
55.2%
 asmFish 051117 64-bit 4CPU3406+20−1969.8%−129.855.7%819
67.9%
 Igel 3.0.0 64-bit 4CPU3399+21−2247.3%+15.870.0%566
55.6%
 SugaR XPrO 1.2 64-bit 4CPU3397+21−2070.4%−136.352.5%754
57.3%
4SlowChess Blitz 2.5 64-bit 4CPU3394+17−1746.6%+21.366.0%915
55.8%
5Komodo 12 64-bit 4CPU3392+17−1769.2%−124.752.0%1102
54.9%
6Ethereal 12.75 64-bit 4CPU3391+15−1548.9%+8.868.1%1224
53.3%
 ShashChess Pro 1.0 64-bit 4CPU3389+33−3365.6%−93.961.7%256
61.1%
7Fire 8 64-bit 4CPU3384+17−1748.0%+13.966.1%946
52.5%
8Nemorino 6.00 64-bit 4CPU3383+17−1748.4%+6.461.7%1039
52.6%
 Komodo 11.01 64-bit 4CPU3382+29−2873.4%−156.146.9%416
57.8%
 Pedone 3.1 64-bit 4CPU3377+37−3843.6%+37.768.1%188
51.8%
 Stockfish 8 64-bit 4CPU3376+14−1365.1%−96.462.1%1647
54.9%
 Nemorino 6.05 64-bit 4CPU3374+23−2344.8%+31.770.6%496
57.7%
 SugaR XPrO 1.3 64-bit 4CPU3371+23−2266.0%−103.157.4%598
71.7%
 Ethereal 12.25 64-bit 4CPU3361+22−2249.3%+5.871.0%544
54.2%
 Igel 2.9.0 64-bit 4CPU3360+16−1648.2%+12.860.6%1050
53.6%
 Igel 2.8.0 64-bit 4CPU3358+25−2553.6%−15.658.2%457
56.6%
 SlowChess Blitz 2.4 64-bit 4CPU3356+21−2146.2%+25.865.2%598
54.2%
 RubiChess 2.0 64-bit 4CPU3354+20−2042.4%+47.669.8%666
65.4%
 Ethereal 12.00 64-bit 4CPU3348+22−2250.9%−3.568.8%564
57.1%
 Komodo 10 64-bit 4CPU3345+23−2276.6%−172.844.0%700
54.3%
 Ethereal 11.75 64-bit 4CPU3343+21−2147.3%+15.265.0%614
57.7%
 SlowChess Blitz 2.3 64-bit 4CPU3340+20−2043.6%+40.464.9%680
65.3%
9Lc0 0.27.0 w703810 64-bit 4CPU3335+17−1743.8%+36.460.7%955
66.5%
10Booot 6.5 64-bit 4CPU3329+21−2136.6%+82.758.7%652
54.3%
11Xiphos 0.6 64-bit 4CPU3328+13−1340.5%+60.261.5%1774
55.8%
 SlowChess Blitz Classic 2.2 64-bit 4CPU3326+20−2043.7%+37.565.8%704
54.9%
 Stockfish 7 64-bit 4CPU3325+15−1567.0%−106.457.3%1304
56.9%
 Ethereal 11.53 64-bit 4CPU3322+23−2252.3%−13.164.0%542
58.0%
 Fire 7.1 64-bit 4CPU3319+11−1148.6%+9.661.0%2672
85.0%
12RofChade 2.3 64-bit 4CPU3310+14−1438.5%+74.159.5%1456
57.4%
 Xiphos 0.5 64-bit 4CPU3308+20−2046.1%+25.166.7%673
54.1%
 Komodo 9 64-bit 4CPU3306+20−2070.4%−123.552.7%804
65.8%
13Pedone 3.0 64-bit 4CPU3300+18−1837.3%+85.356.9%916
64.6%
 Booot 6.4 64-bit 4CPU3296+15−1538.2%+74.459.8%1337
50.5%
 Ethereal 11.00 64-bit 4CPU3296+19−1947.0%+17.863.2%778
48.8%
 Ethereal 11.25 64-bit 4CPU3296+21−2246.3%+24.065.5%588
65.2%
 RubiChess 1.8 64-bit 4CPU3291+19−1938.3%+70.561.1%822
53.1%
 Stockfish 6 64-bit 4CPU3290+14−1465.3%−94.857.3%1542
56.9%
 RubiChess 1.7.3 64-bit 4CPU3287+20−2048.3%+10.362.4%736
56.9%
 Fire 6.1 64-bit 4CPU3285+18−1848.5%+7.658.4%940
52.1%
14Laser 1.7 64-bit 4CPU3284+13−1340.5%+61.660.5%1837
53.3%
 Komodo 8 64-bit 4CPU3283+16−1669.8%−126.149.0%1298
68.3%
15Defenchess 2.2 64-bit 4CPU3278+14−1442.1%+50.160.0%1431
52.3%
 RofChade 2.202 64-bit 4CPU3277+18−1841.4%+53.459.8%858
63.3%
 Ethereal 10.55 64-bit 4CPU3272+24−2549.8%−2.257.4%488
48.7%
 SlowChess Blitz Classic 2.1 64-bit 4CPU3272+22−2242.3%+50.055.0%615
57.4%
16Fizbo 2 64-bit 4CPU3270+12−1243.3%+41.654.9%2131
59.1%
 Stockfish 5 64-bit 4CPU3268+15−1567.7%−109.954.0%1346
64.7%
 Fire 5 64-bit 4CPU3263+18−1846.9%+17.962.5%867
51.9%
17Schooner 2.2 64-bit 4CPU3262+26−2645.6%+28.060.7%420
55.6%
18Andscacs 0.94 64-bit 4CPU3260+18−1847.2%+17.954.2%907
51.5%
 Andscacs 0.95 64-bit 4CPU3259+16−1644.1%+36.960.3%1085
51.5%
 Booot 6.3.1 64-bit 4CPU3259+15−1543.0%+44.057.4%1366
70.6%
 Fizbo 1.9 64-bit 4CPU3253+17−1745.7%+25.755.5%1004
63.6%
 Xiphos 0.4 64-bit 4CPU3248+19−1943.8%+39.261.1%830
56.4%
 RofChade 2.1 64-bit 4CPU3245+25−2544.4%+37.160.0%452
69.2%
 Andscacs 0.921 64-bit 4CPU3237+16−1650.7%−6.147.5%1225
52.4%
 Andscacs 0.93 64-bit 4CPU3237+18−1842.9%+45.054.8%938
59.4%
19Wasp 4.50 64-bit 4CPU3233+23−2347.6%+12.862.5%496
52.2%
 Stockfish DD 64-bit 4CPU3232+17−1763.0%−78.056.1%1032
54.8%
20Arasan 22.2 64-bit 4CPU3230+28−2851.9%−11.755.9%372
57.6%
 Andscacs 0.91 64-bit 4CPU3227+22−2242.5%+47.259.2%596
52.0%
21Halogen 10 64-bit 4CPU3226+26−2648.2%+10.466.3%380
48.7%
 Komodo 7a 64-bit 4CPU3226+18−1860.7%−64.859.0%897
51.0%
 RubiChess 1.6 64-bit 4CPU3226+25−2559.5%−58.750.9%466
62.9%
 Andscacs 0.89 64-bit 4CPU3220+21−2145.9%+28.755.0%662
60.8%
 Komodo TCEC 64-bit 4CPU3216+18−1760.7%−66.954.8%971
53.7%
 Arasan 21.4 64-bit 4CPU3215+25−2545.0%+25.955.6%464
50.6%
 Booot 6.2 64-bit 4CPU3215+14−1442.9%+45.959.3%1517
49.8%
22NirvanaChess 2.5 64-bit 4CPU3215+33−3350.8%−6.261.5%260
51.0%
 Laser 1.6 64-bit 4CPU3214+16−1643.5%+44.055.2%1124
58.8%
 Andscacs 0.88 64-bit 4CPU3211+28−2845.0%+30.954.8%387
48.1%
 Schooner 2.1 64-bit 4CPU3211+23−2344.6%+34.055.5%550
55.7%
 Komodo 6 64-bit 4CPU3209+17−1658.6%−52.356.7%1065
62.2%
 Andscacs 0.90 64-bit 4CPU3205+24−2450.3%+2.155.1%515
50.5%
 Stockfish 4 64-bit 4CPU3204+16−1660.1%−59.759.1%1086
60.8%
 Komodo 5.1 64-bit 4CPU3201+19−1960.3%−63.454.9%779
57.6%
 Andscacs 0.872 64-bit 4CPU3198+24−2451.3%−5.058.8%476
51.0%
 Schooner 2.0.34 64-bit 4CPU3198+20−2049.3%+3.057.9%734
52.6%
 Fire 4 64-bit 4CPU3197+13−1346.5%+21.759.7%1885
57.3%
 Arasan 21.3 64-bit 4CPU3194+30−3046.7%+25.355.7%314
63.2%
 Ethereal 10.00 64-bit 4CPU3187+20−2053.4%−23.050.8%788
68.8%
23‑24Houdini 1.5a 64-bit 4CPU3181+17−1759.2%−62.446.1%1119
49.8%
23‑24Vajolet2 2.7 64-bit 4CPU3181+24−2451.0%−6.855.8%507
48.4%
 Vajolet2 2.8 64-bit 4CPU3181+27−2747.5%+13.863.6%376
53.7%
 SlowChess Blitz Classic 1.9 64-bit 4CPU3180+27−2753.3%−19.558.0%383
51.9%
25Gull 3 64-bit 4CPU3179+9−942.5%+48.154.2%3783
53.1%
 Fizbo 1.8 64-bit 4CPU3178+20−2043.9%+41.549.3%724
50.7%
 NirvanaChess 2.4 64-bit 4CPU3178+13−1341.8%+54.854.5%1852
53.1%
 Gull 2.8b 64-bit 4CPU3177+19−1949.1%+3.551.8%797
51.7%
 Xiphos 0.3 64-bit 4CPU3176+21−2149.2%+3.654.2%660
57.9%
 RofChade 2.0 64-bit 4CPU3173+21−2149.7%+1.457.7%620
54.1%
26Equinox 3.20 64-bit 4CPU3172+11−1142.2%+50.459.0%2671
56.5%
 Arasan 21.2 64-bit 4CPU3169+30−3052.2%−12.260.6%302
57.5%
 Arasan 21.1 64-bit 4CPU3165+27−2751.2%−7.359.5%383
49.2%
 Booot 6.1 64-bit 4CPU3165+20−2042.0%+49.860.3%726
51.6%
27ChessBrainVB 3.72 4CPU3165+30−3045.0%+30.351.3%320
49.0%
 Stockfish 3 64-bit 4CPU3165+21−2156.0%−35.257.8%663
51.9%
 ChessBrainVB 3.74 4CPU3162+128−13046.9%+18.056.3%16
50.5%
 RubiChess 1.5 64-bit 4CPU3161+29−2952.4%−14.354.3%348
52.1%
 Equinox 3.30 64-bit 4CPU3160+18−1843.9%+38.758.9%896
60.2%
28Critter 1.6a 64-bit 4CPU3157+8−845.3%+32.254.6%5429
70.0%
29Hannibal 1.7 64-bit 4CPU3153+14−1442.3%+48.054.5%1577
59.7%
 NirvanaChess 2.3 64-bit 4CPU3150+18−1841.4%+55.956.8%869
55.9%
 Fire 3.0 64-bit 4CPU3149+17−1749.5%+2.158.2%948
53.4%
30Bouquet 1.8 64-bit 4CPU3148+11−1143.6%+40.856.7%2427
51.0%
 Critter 1.4 64-bit 4CPU3147+17−1758.0%−49.054.8%997
51.0%
 Nemorino 5.00 64-bit 4CPU3147+18−1848.1%+10.052.3%878
54.6%
 Stockfish 2.2.2 64-bit 4CPU3146+16−1659.2%−57.053.4%1141
52.7%
 Andscacs 0.86 64-bit 4CPU3145+20−2042.8%+46.353.9%761
51.8%
 Critter 1.2 64-bit 4CPU3144+20−2058.9%−55.052.9%762
59.7%
 Gull 2.3 64-bit 4CPU3141+17−1747.4%+14.559.3%982
49.0%
 Laser 1.5 64-bit 4CPU3141+20−2049.4%+8.054.5%723
50.3%
 Stockfish 2.3.1 64-bit 4CPU3141+19−1955.4%−33.352.5%846
55.7%
31Texel 1.07 64-bit 4CPU3139+14−1449.3%+6.349.2%1636
53.2%
 NirvanaChess 2.2 64-bit 4CPU3138+17−1741.5%+55.557.4%1001
50.8%
 Pedone 1.8 64-bit 4CPU3138+28−2846.7%+18.657.4%350
51.5%
32Protector 1.9.0 64-bit 4CPU3137+15−1546.4%+25.053.9%1338
54.3%
 Wasp 3.75 64-bit 4CPU3136+28−2849.1%+2.257.2%376
50.1%
33Alfil 15.7 64-bit 4CPU3135+17−1742.9%+48.756.3%1006
53.8%
 Vajolet2 2.6.1 64-bit 4CPU3134+21−2150.8%−4.660.3%605
54.9%
 Andscacs 0.85 64-bit 4CPU3132+25−2543.9%+42.653.1%467
50.9%
 Igel 2.3.1 64-bit 4CPU3132+27−2750.2%−2.753.2%406
52.1%
 Sting SF 6 64-bit 4CPU3131+28−2850.8%−6.961.0%354
50.1%
 Bouquet 1.5 64-bit 4CPU3130+23−2346.4%+20.863.6%500
51.0%
 Sting SF 4.8.4 64-bit 4CPU3130+29−2953.3%−20.862.4%330
49.6%
 Texel 1.06 64-bit 4CPU3130+20−2046.1%+25.453.6%739
59.3%
 DeepSaros 4.1.6 64-bit 4CPU3126+26−2645.2%+28.857.5%419
51.5%
 Pedone 1.9 64-bit 4CPU3125+28−2849.4%+1.855.4%354
50.3%
 Stockfish 2.0.1 64-bit 4CPU3125+24−2456.4%−40.248.6%514
51.7%
 Wasp 3.60 64-bit 4CPU3124+33−3345.6%+26.350.4%264
52.8%
 Protector 1.8.0 64-bit 4CPU3123+28−2850.4%−1.854.7%386
51.6%
 ChessBrainVB 3.68 4CPU3122+26−2649.2%+4.251.6%428
50.4%
 Gull 3.1 64-bit 4CPU3122+30−3045.4%+33.045.1%359
51.4%
34‑35BlackMamba 2.0 64-bit 4CPU3121+15−1544.2%+38.054.3%1408
51.5%
34‑35iCE 4.0 64-bit 4CPU3121+26−2646.5%+17.552.5%434
53.9%
 Fizbo 1.7 64-bit 4CPU3119+27−2756.1%−38.952.2%410
51.0%
 Arasan 20.4.1 64-bit 4CPU3118+26−2651.7%−10.450.2%452
53.9%
 Elektro 1.2 64-bit 4CPU3117+23−2346.1%+26.655.5%546
51.1%
 Sting SF 5 64-bit 4CPU3116+25−2548.1%+12.754.0%465
53.1%
 Stockfish 1.9.1 64-bit 4CPU3115+22−2259.7%−66.547.2%671
58.6%
 IvanHoe 9.46h 64-bit 4CPU3112+14−1453.2%−19.559.5%1542
51.2%
 Stockfish 2.1.1 64-bit 4CPU3111+27−2754.7%−28.648.3%406
53.1%
 RobboLito 0.21Q 64-bit 4CPU3110+22−2250.9%−5.962.7%569
53.6%
 Hannibal 1.5 64-bit 4CPU3109+19−1953.2%−20.957.1%819
53.2%
 Sting SF 3 64-bit 4CPU3108+21−2147.7%+11.258.5%644
51.3%
 Bouquet 1.6 64-bit 4CPU3107+21−2150.0%−0.260.7%641
50.3%
36Senpai 2.0 64-bit 4CPU3107+19−1950.5%−5.048.9%872
50.6%
 Sting SF 9 64-bit 4CPU3107+28−2848.0%+10.647.2%381
49.5%
 Stockfish 1.8 64-bit 4CPU3107+18−1860.4%−70.650.6%942
51.4%
 Sting SF 2 64-bit 4CPU3106+27−2748.8%+8.658.1%375
50.4%
37Winter 0.7 64-bit 4CPU3106+25−2645.1%+31.747.1%463
53.6%
 ChessBrainVB 3.66 4CPU3104+28−2854.2%−26.848.7%378
53.5%
 Andscacs 0.83 64-bit 4CPU3102+29−2946.6%+19.451.2%338
50.2%
 Stockfish 1.7.1 64-bit 4CPU3102+19−1960.4%−67.652.6%882
54.3%
 Xiphos 0.2.2 64-bit 4CPU3101+26−2647.3%+13.553.6%414
53.2%
 Wasp 3.50 64-bit 4CPU3099+19−1950.4%−4.653.6%785
56.6%
 Gull 2.2 64-bit 4CPU3096+25−2544.5%+31.754.8%469
52.5%
 Vajolet2 2.5 64-bit 4CPU3095+24−2451.5%−9.454.0%493
54.8%
38Naum 4.6 64-bit 4CPU3094+14−1448.1%+11.354.3%1544
49.4%
 NirvanaChess 2.1c 64-bit 4CPU3094+23−2245.2%+31.047.7%608
51.0%
 Nemorino 4.00 64-bit 4CPU3093+22−2250.0%+1.752.9%624
50.9%
 Sting SF 4 64-bit 4CPU3093+23−2341.9%+49.148.9%562
62.6%
 Arasan 20.3 64-bit 4CPU3086+32−3252.5%−19.747.4%302
51.6%
 Critter 1.01 64-bit 4CPU3086+27−2746.1%+22.154.8%385
48.4%
 Laser 1.4 64-bit 4CPU3086+19−1949.6%+0.545.7%843
53.8%
 Pedone 1.7 64-bit 4CPU3085+19−1948.2%+11.056.4%801
56.1%
 Texel 1.05 64-bit 4CPU3083+17−1747.3%+18.551.4%1016
55.6%
 Andscacs 0.82 64-bit 4CPU3080+29−2950.6%−2.455.2%330
56.7%
 Critter 0.90 64-bit 4CPU3077+31−3147.6%+13.246.5%316
52.5%
 Hannibal 1.4b 64-bit 4CPU3076+15−1542.3%+47.151.3%1332
50.6%
 Andscacs 0.81 64-bit 4CPU3075+31−3148.7%+6.149.3%300
54.1%
 Protector 1.7.0 64-bit 4CPU3073+19−1944.1%+37.250.6%834
52.0%
 Demolito 2019-04-27 64-bit 4CPU3072+66−6650.0%−0.738.9%72
50.5%
39Amoeba 3.1 64-bit 4CPU3071+34−3442.1%+48.349.6%254
52.1%
 Nemorino 3.0 64-bit 4CPU3070+27−2747.9%+12.846.1%427
51.4%
 Protector 1.6.0 64-bit 4CPU3069+21−2243.2%+44.750.2%656
52.5%
40Rodent III 0.238 64-bit 4CPU3068+20−2047.2%+15.250.0%742
54.2%
 Rodent III 0.276 64-bit 4CPU3066+29−2949.6%+3.958.2%337
52.6%
 RubiChess 1.3 64-bit 4CPU3065+22−2252.8%−17.844.2%642
51.6%
41Topple 0.7.5 64-bit 4CPU3065+28−2851.4%−9.846.3%400
51.4%
42Demolito 2018-10-29 64-bit 4CPU3064+30−3048.6%+5.151.9%322
50.6%
 Defenchess 1.1f 64-bit 4CPU3063+18−1951.7%−11.545.3%916
61.3%
 Wasp 3.0 64-bit 4CPU3059+25−2551.1%−8.655.0%462
55.6%
 Texel 1.04 64-bit 4CPU3056+20−2143.1%+43.547.8%722
54.4%
 Alfil 15.8 64-bit 4CPU3055+22−2253.9%−24.447.9%631
50.7%
 NirvanaChess 2.0a 64-bit 4CPU3054+30−3044.7%+36.550.1%337
50.5%
 Protector 1.5.0 64-bit 4CPU3054+18−1842.5%+47.947.4%952
55.9%
 Amoeba 3.0 64-bit 4CPU3052+26−2654.8%−32.644.8%466
51.5%
 Pedone 1.6 64-bit 4CPU3051+23−2349.5%+3.157.7%508
54.7%
 Ethereal 9.00 64-bit 4CPU3049+23−2346.8%+18.845.1%570
65.1%
 Arasan 19.2 64-bit 4CPU3041+31−3151.0%−6.354.8%305
51.2%
 Vajolet2 2.2 64-bit 4CPU3041+27−2747.0%+14.748.7%423
49.2%
 Vajolet2 2.4 64-bit 4CPU3041+19−1947.2%+18.145.7%878
60.5%
 Wasp 2.6 64-bit 4CPU3038+18−1848.9%+7.447.2%968
50.7%
 Gull R375 64-bit 4CPU3037+22−2243.4%+37.557.4%605
53.1%
 Stockfish 1.6.3 64-bit 4CPU3036+22−2257.5%−49.845.3%651
58.2%
 Critter 0.80 64-bit 4CPU3032+30−3050.9%−8.648.3%321
50.7%
 Hannibal 1.3 64-bit 4CPU3032+22−2243.0%+42.648.6%642
50.3%
 Pedone 1.5 64-bit 4CPU3032+31−3149.5%+2.651.6%304
52.7%
 Wasp 2.01 64-bit 4CPU3030+30−3055.3%−32.154.5%321
55.3%
 Arasan 20.0 64-bit 4CPU3027+30−3047.4%+16.553.4%328
51.7%
 Vajolet2 2.3 64-bit 4CPU3026+31−3145.2%+25.653.5%303
53.9%
43‑44Bobcat 8.0 64-bit 4CPU3024+21−2148.3%+11.553.5%636
50.5%
43‑44Pirarucu 2.7.4 64-bit 4CPU3024+21−2053.6%−27.047.6%735
51.8%
 Pirarucu 2.9.5 64-bit 4CPU3023+33−3350.0%−2.053.2%269
52.1%
 Andscacs 0.80 64-bit 4CPU3022+31−3150.2%−1.346.7%317
49.8%
 Senpai 1.0 64-bit 4CPU3022+16−1646.2%+21.153.5%1095
69.4%
45Rybka 2.3.2a 64-bit 4CPU3016+13−1362.8%−85.543.9%1928
57.0%
46Spike 1.4 Leiden 4CPU3015+11−1145.2%+29.347.7%2862
49.7%
 Winter 0.6 64-bit 4CPU3015+32−3253.0%−27.735.6%329
55.4%
47‑48Crafty 25.2 64-bit 4CPU3012+16−1648.5%+9.742.5%1279
51.7%
47‑48chess22k 1.10 64-bit 4CPU3012+22−2246.7%+16.443.7%680
52.6%
 Arasan 19.0.1 64-bit 4CPU3011+32−3151.3%−12.340.9%318
49.8%
 Nemorino 2.00 64-bit 4CPU3011+30−3047.0%+16.059.6%302
53.2%
 Laser 1.3 64-bit 4CPU3009+29−3047.2%+15.655.8%321
50.6%
 Texel 1.03 64-bit 4CPU3009+31−3150.3%−1.547.0%313
50.5%
49Cheng 4.39 64-bit 4CPU3008+15−1549.4%+4.648.6%1333
70.8%
 Pedone 1.4.1 64-bit 4CPU2999+30−3048.5%+8.255.7%305
52.7%
 Vajolet2 2.1 64-bit 4CPU2998+25−2550.9%−4.148.5%462
54.5%
 Rodent III 0.210 64-bit 4CPU2995+28−2845.1%+33.242.5%402
57.3%
 Fizbo 1.5 64-bit 4CPU2992+27−2752.6%−16.648.5%410
68.1%
50Scorpio 2.8 64-bit 4CPU2983+25−2548.8%+6.546.3%492
53.4%
 Protector 1.4.0 64-bit 4CPU2981+19−1942.5%+49.442.9%912
55.1%
 Cheng4 0.38 64-bit 4CPU2979+24−2446.0%+23.642.4%531
53.6%
 Bobcat 7.6 64-bit 4CPU2977+31−3148.6%+9.541.8%318
59.2%
 Rybka 2.2 64-bit 4CPU2973+20−1962.8%−87.441.2%879
51.8%
 Arasan 18.3 64-bit 4CPU2972+30−3046.6%+20.646.8%327
54.8%
 Arasan 18.2 64-bit 4CPU2970+28−2851.9%−15.350.3%388
48.7%
51EXchess 7.97b 64-bit 4CPU2970+18−1847.4%+18.645.9%1017
57.7%
52Spark 1.0 64-bit 4CPU2968+13−1345.0%+31.946.6%1787
49.4%
 Stockfish 1.5.1 64-bit 4CPU2968+25−2453.7%−23.147.7%495
63.8%
 Demolito 2017-08-26 64-bit 4CPU2962+21−2140.2%+63.740.8%748
49.8%
 Winter 0.5 64-bit 4CPU2962+26−2650.4%−5.338.3%470
53.2%
 Protector 1.3.6 64-bit 4CPU2960+32−3246.6%+19.044.3%307
58.1%
 EXchess 7.88b 64-bit 4CPU2956+29−2945.4%+29.548.6%356
49.4%
53Toga II 4.0 64-bit 4CPU2956+19−1941.4%+57.240.4%958
54.3%
 Fizbo 1.31 64-bit 4CPU2954+30−2951.1%−6.341.9%358
61.5%
 Crafty 25.0 64-bit 4CPU2948+25−2548.1%+13.247.9%468
54.4%
 Stockfish 1.4 64-bit 4CPU2947+17−1754.2%−29.242.2%1131
55.8%
 Scorpio 2.7.9 64-bit 4CPU2944+22−2246.7%+21.440.5%659
59.6%
54Gaviota 1.0 64-bit 4CPU2941+16−1647.3%+16.345.4%1256
51.7%
55Tucano 7.07 64-bit 4CPU2940+33−3351.5%−9.544.7%291
51.9%
 EXchess 7.51b 64-bit 4CPU2939+32−3249.5%+5.245.6%296
52.1%
56The Baron 3.44 64-bit 4CPU2938+28−2846.8%+20.745.3%402
55.9%
57Marvin 3.3.2 64-bit 4CPU2935+36−3743.4%+39.644.7%228
51.6%
 Arasan 17.5 64-bit 4CPU2934+27−2748.4%+9.745.1%406
55.0%
 EXchess 7.71b 64-bit 4CPU2931+28−2853.3%−22.743.2%403
50.7%
 Fizbo 1.4 64-bit 4CPU2931+28−2845.9%+24.844.7%394
49.1%
 Spark 0.4 64-bit 4CPU2931+21−2143.0%+48.945.2%703
51.7%
 Bobcat 7.1 64-bit 4CPU2930+31−3147.5%+16.545.9%314
51.1%
 Ethereal 8.62 64-bit 4CPU2930+22−2244.2%+35.549.7%600
58.7%
 Spark 0.3 64-bit 4CPU2926+23−2346.5%+20.549.7%572
52.1%
 Arasan 18.0 64-bit 4CPU2925+29−2947.2%+15.741.5%378
50.4%
58Thinker 5.4d Inert 64-bit 4CPU2925+23−2346.0%+24.049.7%587
57.7%
 Thinker 5.4c Inert 64-bit 4CPU2922+15−1548.1%+13.139.4%1502
53.4%
 Marvin 3.2.0 64-bit 4CPU2921+21−2153.7%−26.343.0%698
58.7%
 Toga II 3.0 4CPU2918+22−2345.6%+26.749.0%592
59.9%
59DisasterArea 1.65 64-bit 4CPU2914+21−2144.2%+35.646.1%709
55.5%
60Gogobello 2.0 64-bit 4CPU2911+25−2550.8%−6.639.1%522
56.0%
 Crafty 23.8 64-bit 4CPU2908+32−3345.8%+27.547.0%287
59.0%
 Thinker 5.4a Inert 64-bit 4CPU2903+23−2347.3%+20.145.4%560
50.9%
 Toga II 1.4.1SE 4CPU2903+13−1348.5%+10.641.6%2041
51.1%
 Asymptote 0.6 64-bit 4CPU2902+95−9548.3%+3.056.7%30
50.0%
 The Baron 3.41 64-bit 4CPU2902+20−2039.1%+70.443.8%800
62.4%
 Cheng4 0.36c 64-bit 4CPU2896+30−3048.8%+6.046.6%326
50.9%
61‑62Bright 0.4a 4CPU2895+15−1547.4%+17.241.1%1495
51.1%
61‑62Tornado 6.0 64-bit 4CPU2895+26−2645.5%+27.443.3%469
50.7%
63Glaurung 2.2 64-bit 4CPU2894+16−1647.0%+19.640.7%1259
51.3%
 Tornado 8.0 64-bit 4CPU2894+19−1945.2%+30.739.0%881
54.2%
 Tornado 7.0 64-bit 4CPU2892+25−2545.3%+31.239.2%502
56.4%
 Bright 0.5c 4CPU2890+23−2347.2%+18.942.9%616
57.1%
64Octochess r5506 64-bit 4CPU2887+21−2144.5%+35.646.7%715
56.0%
65MinkoChess 1.3 64-bit 4CPU2885+21−2146.0%+24.043.7%725
50.9%
 Toga II 1.4 beta5c 4CPU2884+18−1851.7%−11.845.8%996
49.7%
 Tornado 4.88 64-bit 4CPU2884+26−2646.0%+24.941.5%479
60.9%
 Fruit Reloaded 3.2.1 64-bit 4CPU2880+18−1838.8%+74.339.1%1024
48.9%
 Pedone 1.3 64-bit 4CPU2880+29−2946.6%+20.451.0%355
56.5%
 Crafty 24.1 64-bit 4CPU2877+31−3243.5%+41.339.1%322
56.8%
 Scorpio 2.7.6 64-bit 4CPU2873+26−2647.4%+17.144.0%445
64.3%
 Glaurung 2.1 64-bit 4CPU2867+19−1942.8%+51.041.3%946
53.9%
 Bobcat 6.4b 64-bit 4CPU2866+27−2748.3%+11.146.5%415
52.3%
 The Baron 3.29 64-bit 4CPU2865+25−2546.3%+22.243.1%489
51.5%
 EXchess 7.18b 64-bit 4CPU2864+33−3347.3%+16.438.4%292
59.9%
 Gaviota 0.86 64-bit 4CPU2859+24−2453.4%−26.832.6%617
49.3%
 Scorpio 2.7.5 64-bit 4CPU2859+33−3345.7%+24.750.0%266
53.7%
 Arasan 16.3 64-bit 4CPU2857+34−3449.1%+4.240.2%276
49.0%
 Crafty 23.4 64-bit 4CPU2857+34−3446.9%+19.735.7%272
56.7%
66Monolith 1.0 64-bit 4CPU2854+22−2148.6%+8.043.0%693
48.6%
 Scorpio 2.7.7 64-bit 4CPU2854+32−3242.9%+45.241.3%310
54.2%
67Counter 3.2 64-bit 4CPU2852+32−3250.7%−4.840.2%301
56.9%
 Igel 1.9.0 64-bit 4CPU2848+31−3241.0%+59.339.5%324
60.7%
68Shield 2.1 64-bit 4CPU2843+23−2448.7%+9.236.0%594
51.2%
69Cheese 2.0 64-bit 4CPU2842+30−3045.8%+26.339.2%355
60.4%
70‑71BugChess2 1.9 64-bit 4CPU2837+21−2143.4%+44.238.2%738
50.0%
70‑71Loop 13.6 (Loop 2007) 64-bit 4CPU2837+19−1948.3%+11.942.8%894
51.8%
 Crafty 23.3 64-bit 4CPU2836+31−3241.5%+55.238.2%325
64.6%
 Bright 0.3a 4CPU2829+18−1842.4%+50.941.8%988
52.7%
 Glaurung 2.0.1 64-bit 4CPU2828+17−1743.8%+38.743.5%1100
65.8%
 Octochess r5190 64-bit 4CPU2822+24−2445.9%+23.944.5%555
57.3%
 Pedone 1.1 64-bit 4CPU2818+31−3153.7%−31.539.5%347
51.6%
 Arminius 2018-12-23 64-bit 4CPU2817+44−4544.2%+40.936.4%165
53.7%
72Jonny 4.00 4CPU2814+25−2543.6%+43.035.0%540
70.8%
 Bright 0.2c 4CPU2805+21−2143.9%+40.343.2%724
59.6%
 Pedone 1.2 64-bit 4CPU2800+36−3648.4%+9.042.3%246
63.9%
 Crafty 23.1 64-bit 4CPU2790+36−3743.8%+43.536.9%241
53.7%
 Laser 1.0 64-bit 4CPU2788+37−3836.3%+89.839.2%227
58.4%
 Bagatur 1.7a 64-bit 4CPU2773+131−13445.0%+31.220.0%20
54.8%
 Glaurung 1.2.1 64-bit 4CPU2765+19−1940.2%+63.938.1%967
69.2%
 Crafty 23.0 64-bit 4CPU2758+18−1839.0%+77.634.1%1042
69.1%
73Fridolin 3.10 64-bit 4CPU2748+33−3349.5%−0.231.5%308
55.6%
 Alfil 13.1 64-bit 4CPU2745+28−2841.8%+53.234.1%440
76.8%
 Scorpio 2.0 32-bit 4CPU2731+24−2433.4%+114.736.7%607
62.8%
74Nebula 2.0 64-bit 4CPU2725+20−2045.1%+36.034.1%866
66.0%
 Scorpio 2.1 64-bit 4CPU2718+27−2734.4%+109.131.6%490
80.3%
 Igel 1.4.1 64-bit 4CPU2701+28−2850.7%−7.126.3%448
76.8%
75Hamsters 0.7.1 4CPU2685+32−3252.4%−14.136.2%318
54.2%
76RedQueen 1.1.98 64-bit 4CPU2683+27−2739.4%+80.328.5%494
65.3%
77ECE X3 64-bit 4CPU2676+23−2341.5%+68.223.4%709
57.3%
78Pharaon 3.5.1 4CPU2673+26−2643.6%+41.329.7%518
62.0%
79Jellyfish 1.1 64-bit 4CPU2667+29−2953.3%−25.532.3%403
60.3%
 RedQueen 1.1.97 64-bit 4CPU2662+22−2245.7%+26.733.3%726
71.5%
80Ghost 3.1 64-bit 4CPU2651+30−2953.9%−25.528.5%393
53.5%
81Arminius 2015-08-06 64-bit 4CPU2649+33−3344.2%+38.536.1%302
52.3%
 Gaviota 0.83 64-bit 4CPU2648+25−2547.3%+20.527.9%566
99.6%
 Fridolin 2.00 64-bit 4CPU2588+34−3441.9%+57.331.3%297
93.1%
82‑83Delphil 3.2 64-bit 4CPU2554+31−3138.2%+85.630.5%374
50.2%
82‑83Jazz 840 64-bit 4CPU2554+20−2057.8%−63.925.3%1000
91.7%
84Nemeton 1.8 4CPU2530+27−2749.9%+1.727.2%496
86.6%
85Jumbo 0.6.66 64-bit 4CPU2509+28−2850.0%−1.233.0%433
88.0%
86Myrddin 0.87 64-bit 4CPU2483+35−3538.9%+80.928.4%296
85.9%
 Invictus r228 64-bit 4CPU2341+242−29528.6%+166.40.0%7
 

Results matrix

Free multi-CPU engines (best versions only), top 12
#NameElo123456789101112
1Stockfish 13 64-bit 4CPU3548  21 − 7
+14−0=14
+14
41.5 − 10.5
+31−0=21
+41
 43 − 13
+30−0=26
+12
38.5 − 11.5
+27−0=23
+3
40 − 12
+28−0=24
+4
27 − 11
+16−0=22
−90
22.5 − 9.5
+13−0=19
−103
42.5 − 7.5
+35−0=15
+35
88 − 16
+72−0=32
+10
2Igel 3.0.5 64-bit 4CPU3416  27 − 25
+3−1=48
+2
27.5 − 24.5
+6−3=43
−7
        
3RubiChess 2.1 64-bit 4CPU34097 − 21
+0−14=14
−14
25 − 27
+1−3=48
−2
 15.5 − 12.5
+5−2=21
+9
 13.5 − 16.5
+2−5=23
−43
31 − 19
+16−4=30
+43
14 − 14
+2−2=24
−26
52 − 26
+28−2=48
+17
20.5 − 9.5
+12−1=17
+26
18.5 − 9.5
+10−1=17
+10
 
4SlowChess Blitz 2.5 64-bit 4CPU339410.5 − 41.5
+0−31=21
−41
24.5 − 27.5
+3−6=43
+7
12.5 − 15.5
+2−5=21
−9
  17 − 15
+7−5=20
+13
27 − 27
+8−8=38
−9
18 − 14
+5−1=26
+20
24 − 14
+11−1=26
+10
17 − 15
+7−5=20
−46
18 − 14
+6−2=24
−32
21.5 − 10.5
+15−4=13
+25
5Komodo 12 64-bit 4CPU3392            
6Ethereal 12.75 64-bit 4CPU339113 − 43
+0−30=26
−12
 16.5 − 13.5
+5−2=23
+43
15 − 17
+5−7=20
−13
  26.5 − 27.5
+7−8=39
−12
17 − 15
+5−3=24
+6
21 − 17
+7−3=28
−28
18.5 − 13.5
+6−1=25
−21
17.5 − 12.5
+6−1=23
−20
19 − 11
+9−1=20
−8
7Fire 8 64-bit 4CPU338411.5 − 38.5
+0−27=23
−3
 19 − 31
+4−16=30
−43
27 − 27
+8−8=38
+9
 27.5 − 26.5
+8−7=39
+12
 24.5 − 27.5
+6−9=37
−16
21.5 − 14.5
+9−2=25
+4
30 − 16
+14−0=32
+27
34.5 − 17.5
+18−1=33
+33
35.5 − 16.5
+20−1=31
+28
8Nemorino 6.00 64-bit 4CPU338312 − 40
+0−28=24
−4
 14 − 14
+2−2=24
+26
14 − 18
+1−5=26
−20
 15 − 17
+3−5=24
−6
27.5 − 24.5
+9−6=37
+16
 32.5 − 19.5
+20−7=25
+27
 19 − 13
+8−2=22
−5
21 − 11
+13−3=16
+20
9Lc0 0.27.0 w703810 64-bit 4CPU333511 − 27
+0−16=22
+90
 26 − 52
+2−28=48
−17
14 − 24
+1−11=26
−10
 17 − 21
+3−7=28
+28
14.5 − 21.5
+2−9=25
−4
19.5 − 32.5
+7−20=25
−27
 50 − 46
+22−18=56
+4
19.5 − 14.5
+10−5=19
+34
18 − 18
+6−6=24
−26
10Booot 6.5 64-bit 4CPU33299.5 − 22.5
+0−13=19
+103
 9.5 − 20.5
+1−12=17
−26
15 − 17
+5−7=20
+46
 13.5 − 18.5
+1−6=25
+21
16 − 30
+0−14=32
−27
 46 − 50
+18−22=56
−4
 13 − 19
+1−7=24
−50
 
11Xiphos 0.6 64-bit 4CPU33287.5 − 42.5
+0−35=15
−35
 9.5 − 18.5
+1−10=17
−10
14 − 18
+2−6=24
+32
 12.5 − 17.5
+1−6=23
+20
17.5 − 34.5
+1−18=33
−33
13 − 19
+2−8=22
+5
14.5 − 19.5
+5−10=19
−34
19 − 13
+7−1=24
+50
 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
+8
16.5 − 35.5
+1−20=31
−28
11 − 21
+3−13=16
−20
18 − 18
+6−6=24
+26
 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
2Igel 3.0.5 64-bit 4CPU34160.0 64.187.087.489.894.695.0100.0100.0100.0100.0
3RubiChess 2.1 64-bit 4CPU34090.035.9 86.287.392.097.297.4100.0100.0100.0100.0
4SlowChess Blitz 2.5 64-bit 4CPU33940.013.013.8 55.861.781.382.9100.0100.0100.0100.0
5Komodo 12 64-bit 4CPU33920.012.612.744.2 54.975.077.3100.0100.0100.0100.0
6Ethereal 12.75 64-bit 4CPU33910.010.28.038.345.1 74.176.3100.0100.0100.0100.0
7Fire 8 64-bit 4CPU33840.05.42.818.725.025.9 52.5100.0100.0100.0100.0
8Nemorino 6.00 64-bit 4CPU33830.05.02.617.122.723.747.5 100.0100.0100.0100.0
9Lc0 0.27.0 w703810 64-bit 4CPU33350.00.00.00.00.00.00.00.0 66.573.798.5
10Booot 6.5 64-bit 4CPU33290.00.00.00.00.00.00.00.033.5 54.392.6
11Xiphos 0.6 64-bit 4CPU33280.00.00.00.00.00.00.00.026.345.7 96.9
12RofChade 2.3 64-bit 4CPU33100.00.00.00.00.00.00.00.01.57.43.1 
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 15, 2021