CCRL 40/15
Downloads and Statistics
January 24, 2021
Testing summary:
Total: 1'209'412 games
played by 2'772 programs

White wins: 415'904 (34.4%)
Black wins: 306'459 (25.3%)
Draws: 487'049 (40.3%)
White score: 54.5%

Free 4-CPU engines

Comparing 332 engines!
84 best versions of selected engines played 10632 games with each other

CCRL 40/15 Rating List — Free 4-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 January 24, 2021 with Bayeselo based on 1'209'412 games

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+−
1ShashChess 15.0 64-bit 4CPU3537+26−2676.8%−177.746.5%508 
89.7%
 Stockfish 12 64-bit 4CPU3516+20−2072.6%−144.754.3%773
51.5%
 SugaR AI 1.00 64-bit 4CPU3514+132−12070.0%−130.840.0%20
62.7%
 Stockfish 2019-10-09 64-bit 4CPU3493+23−2374.7%−155.950.3%616
77.8%
 Stockfish 11 64-bit 4CPU3481+20−1973.0%−142.552.6%840
74.3%
 SugaR NN 1.1 64-bit 4CPU3473+15−1570.7%−131.852.5%1338
78.7%
 Stockfish 10 64-bit 4CPU3464+17−1673.4%−155.550.3%1227
55.0%
 SugaR 1.6.1 64-bit 4CPU3462+25−2569.0%−118.057.4%479
68.0%
 Stockfish 270918 64-bit 4CPU3453+28−2877.9%−188.943.3%457
69.2%
 ShashChess 8.0 64-bit 4CPU3445+15−1565.8%−94.163.7%1206
79.1%
 SugaR XPrO 1.5.3 64-bit 4CPU3433+24−2471.8%−144.251.3%544
55.1%
 Stockfish 9 64-bit 4CPU3431+15−1572.3%−153.250.5%1423
95.5%
 SugaR XPrO 1.4 64-bit 4CPU3410+20−2072.3%−149.951.8%840
55.4%
 asmFish 051117 64-bit 4CPU3408+20−1969.8%−129.855.7%819
75.4%
 SugaR XPrO 1.2 64-bit 4CPU3399+21−2070.4%−136.452.5%754
59.5%
2Ethereal 12.75 64-bit 4CPU3395+20−2053.2%−17.170.1%648
51.9%
3Komodo 12 64-bit 4CPU3394+17−1769.2%−124.752.0%1102
55.5%
 ShashChess Pro 1.0 64-bit 4CPU3392+33−3365.6%−94.561.7%256
64.2%
 Komodo 11.01 64-bit 4CPU3383+29−2873.4%−155.646.9%416
53.0%
4Nemorino 6.00 64-bit 4CPU3382+23−2355.2%−37.560.1%542
61.5%
 Stockfish 8 64-bit 4CPU3378+13−1365.1%−96.762.1%1647
64.8%
 SugaR XPrO 1.3 64-bit 4CPU3373+23−2266.0%−103.357.4%598
66.2%
 Ethereal 12.25 64-bit 4CPU3366+22−2249.3%+5.371.0%544
61.5%
5Igel 2.8.0 64-bit 4CPU3360+28−2761.8%−65.761.3%359
53.4%
6SlowChess Blitz 2.4 64-bit 4CPU3359+23−2349.9%+2.468.0%510
65.6%
 Ethereal 12.00 64-bit 4CPU3352+22−2250.9%−2.968.8%564
62.7%
 Ethereal 11.75 64-bit 4CPU3347+21−2147.3%+15.465.0%614
53.5%
 Komodo 10 64-bit 4CPU3346+23−2276.6%−172.844.0%700
55.9%
 SlowChess Blitz 2.3 64-bit 4CPU3344+20−2043.6%+39.464.9%680
63.2%
7Xiphos 0.6 64-bit 4CPU3339+15−1645.2%+30.266.3%1144
75.9%
 SlowChess Blitz Classic 2.2 64-bit 4CPU3331+20−2043.7%+36.865.8%704
63.9%
 Stockfish 7 64-bit 4CPU3326+15−1567.0%−106.357.3%1304
50.6%
 Ethereal 11.53 64-bit 4CPU3325+23−2252.3%−12.564.0%542
59.1%
8Fire 7.1 64-bit 4CPU3323+11−1150.6%−4.662.2%2422
78.5%
9RofChade 2.3 64-bit 4CPU3314+17−1741.4%+51.566.5%942
59.1%
 Xiphos 0.5 64-bit 4CPU3311+20−2046.1%+25.666.7%673
60.3%
 Komodo 9 64-bit 4CPU3307+20−2070.4%−123.452.7%804
56.5%
10Pedone 3.0 64-bit 4CPU3304+29−2936.9%+81.959.9%332
58.6%
11Booot 6.4 64-bit 4CPU3301+17−1739.5%+62.264.0%973
52.4%
 Ethereal 11.25 64-bit 4CPU3300+21−2146.3%+23.565.5%588
53.6%
 Ethereal 11.00 64-bit 4CPU3298+19−1947.0%+18.463.2%778
61.2%
12RubiChess 1.8 64-bit 4CPU3294+20−2035.1%+90.462.0%728
59.5%
 RubiChess 1.7.3 64-bit 4CPU3291+20−2048.3%+9.762.4%736
50.7%
 Stockfish 6 64-bit 4CPU3291+14−1465.3%−94.757.3%1542
51.6%
13Laser 1.7 64-bit 4CPU3290+13−1442.0%+49.462.6%1603
61.3%
 Fire 6.1 64-bit 4CPU3287+18−1848.5%+7.558.4%940
57.6%
 Komodo 8 64-bit 4CPU3284+16−1669.8%−126.249.0%1298
62.0%
14Defenchess 2.2 64-bit 4CPU3281+15−1540.3%+60.460.0%1251
48.9%
 RofChade 2.202 64-bit 4CPU3281+18−1841.4%+53.159.8%858
59.1%
 SlowChess Blitz Classic 2.1 64-bit 4CPU3278+22−2242.1%+50.454.4%599
58.2%
 Ethereal 10.55 64-bit 4CPU3274+25−2449.8%−1.757.4%488
53.9%
15Fizbo 2 64-bit 4CPU3273+12−1243.3%+41.454.9%2131
65.2%
 Stockfish 5 64-bit 4CPU3269+15−1567.7%−109.954.0%1346
57.2%
16Schooner 2.2 64-bit 4CPU3266+26−2645.6%+27.660.7%420
52.6%
 Fire 5 64-bit 4CPU3265+18−1846.9%+17.862.5%867
54.3%
17Andscacs 0.95 64-bit 4CPU3263+17−1842.3%+47.959.3%943
53.4%
 Andscacs 0.94 64-bit 4CPU3262+18−1847.2%+18.354.2%907
51.3%
 Booot 6.3.1 64-bit 4CPU3262+15−1543.0%+43.857.4%1366
73.5%
 Fizbo 1.9 64-bit 4CPU3254+17−1745.7%+26.655.5%1004
61.9%
 Xiphos 0.4 64-bit 4CPU3250+19−1943.8%+39.761.1%830
54.7%
 RofChade 2.1 64-bit 4CPU3248+25−2544.4%+37.260.0%452
72.2%
 Andscacs 0.921 64-bit 4CPU3239+16−1650.7%−6.347.5%1225
52.1%
 Andscacs 0.93 64-bit 4CPU3239+18−1842.9%+44.954.8%938
65.9%
 Stockfish DD 64-bit 4CPU3233+17−1763.0%−78.156.1%1032
63.1%
 Andscacs 0.91 64-bit 4CPU3228+22−2242.5%+48.059.2%596
50.9%
 RubiChess 1.6 64-bit 4CPU3228+25−2559.5%−58.650.9%466
51.8%
 Komodo 7a 64-bit 4CPU3227+18−1860.7%−64.959.0%897
64.5%
 Andscacs 0.89 64-bit 4CPU3222+21−2145.9%+28.455.0%662
58.9%
18Arasan 21.4 64-bit 4CPU3218+25−2545.0%+26.055.6%464
51.7%
 Komodo TCEC 64-bit 4CPU3217+18−1760.8%−68.054.9%955
52.9%
 Booot 6.2 64-bit 4CPU3216+14−1442.9%+46.759.3%1517
50.0%
 Laser 1.6 64-bit 4CPU3216+16−1643.5%+44.355.2%1124
56.5%
 Schooner 2.1 64-bit 4CPU3214+23−2344.6%+33.655.5%550
53.6%
 Andscacs 0.88 64-bit 4CPU3212+28−2845.0%+31.554.8%387
55.0%
 Komodo 6 64-bit 4CPU3210+17−1658.6%−52.356.7%1065
61.2%
 Andscacs 0.90 64-bit 4CPU3206+24−2450.3%+2.655.1%515
51.4%
 Stockfish 4 64-bit 4CPU3205+16−1660.1%−59.859.1%1086
62.3%
 Komodo 5.1 64-bit 4CPU3201+20−2060.9%−66.455.2%747
54.8%
 Schooner 2.0.34 64-bit 4CPU3200+20−2049.3%+3.157.9%734
51.3%
 Andscacs 0.872 64-bit 4CPU3199+24−2451.3%−4.858.8%476
53.8%
 Fire 4 64-bit 4CPU3198+13−1346.5%+21.859.7%1885
54.2%
 Arasan 21.3 64-bit 4CPU3196+30−3046.7%+25.955.7%314
65.3%
 Ethereal 10.00 64-bit 4CPU3189+20−2053.4%−23.550.8%788
60.5%
19Vajolet2 2.7 64-bit 4CPU3184+25−2552.3%−13.955.8%459
55.2%
20Houdini 1.5a 64-bit 4CPU3182+17−1760.4%−69.045.2%1053
51.7%
 SlowChess Blitz Classic 1.9 64-bit 4CPU3181+27−2753.3%−18.658.0%383
53.4%
21‑22Gull 3 64-bit 4CPU3180+9−942.5%+48.454.2%3783
52.4%
21‑22NirvanaChess 2.4 64-bit 4CPU3180+13−1341.7%+55.354.2%1828
51.1%
 Fizbo 1.8 64-bit 4CPU3179+20−2143.9%+41.949.3%724
54.2%
 Gull 2.8b 64-bit 4CPU3178+19−1949.1%+3.551.8%797
49.7%
 Xiphos 0.3 64-bit 4CPU3178+21−2149.2%+3.354.2%660
57.1%
 RofChade 2.0 64-bit 4CPU3175+21−2149.7%+1.557.7%620
56.6%
23Equinox 3.20 64-bit 4CPU3173+11−1142.2%+50.659.0%2671
54.6%
 Arasan 21.2 64-bit 4CPU3171+30−3052.2%−12.160.6%302
58.4%
 Arasan 21.1 64-bit 4CPU3167+27−2751.2%−8.059.5%383
49.3%
 Booot 6.1 64-bit 4CPU3167+20−2042.0%+49.460.3%726
50.0%
24ChessBrainVB 3.72 4CPU3167+30−3045.0%+30.551.3%320
52.1%
 Stockfish 3 64-bit 4CPU3166+21−2156.0%−35.457.8%663
51.3%
 ChessBrainVB 3.74 4CPU3164+128−13046.9%+17.056.3%16
50.6%
 RubiChess 1.5 64-bit 4CPU3163+29−2952.4%−14.654.3%348
53.5%
 Equinox 3.30 64-bit 4CPU3161+18−1843.9%+38.858.9%896
60.4%
25Critter 1.6a 64-bit 4CPU3159+8−845.3%+31.354.6%5429
68.2%
26Hannibal 1.7 64-bit 4CPU3155+14−1442.3%+47.454.5%1577
60.3%
 NirvanaChess 2.3 64-bit 4CPU3152+18−1841.4%+55.156.8%869
61.1%
27Bouquet 1.8 64-bit 4CPU3149+11−1143.6%+40.856.7%2427
46.7%
 Fire 3.0 64-bit 4CPU3149+17−1749.5%+3.058.2%948
52.1%
 Nemorino 5.00 64-bit 4CPU3149+18−1848.1%+9.852.3%878
51.1%
 Critter 1.4 64-bit 4CPU3148+18−1860.0%−60.854.2%907
57.0%
 Stockfish 2.2.2 64-bit 4CPU3146+16−1659.2%−56.153.4%1141
52.5%
 Andscacs 0.86 64-bit 4CPU3145+20−2042.8%+47.053.9%761
52.0%
 Critter 1.2 64-bit 4CPU3145+20−2058.9%−55.252.9%762
59.4%
 Gull 2.3 64-bit 4CPU3142+17−1747.4%+14.359.3%982
48.1%
 Laser 1.5 64-bit 4CPU3142+20−2049.4%+8.354.5%723
51.5%
 Stockfish 2.3.1 64-bit 4CPU3142+19−1955.4%−33.452.5%846
53.1%
28Texel 1.07 64-bit 4CPU3141+14−1449.5%+5.049.2%1620
52.3%
 Pedone 1.8 64-bit 4CPU3140+28−2846.7%+18.757.4%350
51.6%
 NirvanaChess 2.2 64-bit 4CPU3139+17−1741.5%+55.257.4%1001
52.5%
29Protector 1.9.0 64-bit 4CPU3138+15−1546.4%+25.153.9%1338
56.6%
30Alfil 15.7 64-bit 4CPU3136+17−1742.9%+48.756.3%1006
52.9%
 Vajolet2 2.6.1 64-bit 4CPU3135+21−2150.8%−4.260.3%605
55.7%
 Andscacs 0.85 64-bit 4CPU3133+25−2543.9%+42.553.1%467
50.0%
 Igel 2.3.1 64-bit 4CPU3133+27−2750.2%−2.253.2%406
51.0%
31Wasp 3.75 64-bit 4CPU3133+29−2948.9%+3.656.3%352
52.6%
 Bouquet 1.5 64-bit 4CPU3131+23−2346.4%+20.863.6%500
50.8%
 Sting SF 4.8.4 64-bit 4CPU3131+29−2953.3%−21.062.4%330
49.1%
 Sting SF 6 64-bit 4CPU3131+28−2850.8%−6.161.0%354
50.1%
 Texel 1.06 64-bit 4CPU3131+20−2046.1%+25.653.6%739
57.2%
 Wasp 3.60 64-bit 4CPU3128+34−3446.8%+18.750.8%248
50.8%
 DeepSaros 4.1.6 64-bit 4CPU3127+26−2645.2%+28.757.5%419
50.2%
 Pedone 1.9 64-bit 4CPU3127+28−2849.4%+1.555.4%354
51.8%
 Stockfish 2.0.1 64-bit 4CPU3126+24−2456.4%−40.448.6%514
55.0%
 Protector 1.8.0 64-bit 4CPU3124+28−2850.4%−1.954.7%386
51.1%
 ChessBrainVB 3.68 4CPU3123+26−2649.2%+4.351.6%428
49.9%
 Gull 3.1 64-bit 4CPU3123+30−3045.4%+33.645.1%359
51.3%
32iCE 4.0 64-bit 4CPU3123+27−2747.9%+9.752.3%400
50.8%
33BlackMamba 2.0 64-bit 4CPU3122+15−1544.2%+38.054.3%1408
56.7%
 Fizbo 1.7 64-bit 4CPU3120+27−2756.1%−39.252.2%410
50.4%
 Arasan 20.4.1 64-bit 4CPU3119+26−2651.7%−10.250.2%452
54.3%
 Elektro 1.2 64-bit 4CPU3117+23−2346.1%+27.655.5%546
51.1%
 Sting SF 5 64-bit 4CPU3117+25−2548.1%+12.754.0%465
57.1%
 Stockfish 1.9.1 64-bit 4CPU3114+22−2260.9%−73.546.6%639
53.7%
 IvanHoe 9.46h 64-bit 4CPU3113+14−1453.2%−19.759.5%1542
51.0%
 Stockfish 2.1.1 64-bit 4CPU3112+27−2754.7%−28.648.3%406
53.1%
 RobboLito 0.21Q 64-bit 4CPU3111+22−2250.9%−6.162.7%569
53.4%
 Hannibal 1.5 64-bit 4CPU3110+19−1953.2%−21.057.1%819
54.7%
 Bouquet 1.6 64-bit 4CPU3108+21−2150.0%−0.460.7%641
50.0%
34‑35Senpai 2.0 64-bit 4CPU3108+19−1951.5%−11.748.7%816
48.6%
 Sting SF 3 64-bit 4CPU3108+21−2147.7%+12.158.5%644
50.2%
 Sting SF 9 64-bit 4CPU3108+28−2848.0%+11.447.2%381
51.4%
34‑35Winter 0.7 64-bit 4CPU3108+25−2645.1%+31.147.1%463
50.8%
 Sting SF 2 64-bit 4CPU3107+27−2748.8%+8.658.1%375
51.2%
 Stockfish 1.8 64-bit 4CPU3107+18−1860.8%−73.850.4%918
53.1%
 ChessBrainVB 3.66 4CPU3105+28−2854.2%−27.048.7%378
53.5%
 Andscacs 0.83 64-bit 4CPU3103+29−2946.6%+19.451.2%338
51.4%
 Stockfish 1.7.1 64-bit 4CPU3103+19−1960.4%−68.252.6%882
52.7%
 Xiphos 0.2.2 64-bit 4CPU3102+26−2647.3%+13.653.6%414
52.6%
 Wasp 3.50 64-bit 4CPU3101+19−1950.4%−5.253.6%785
57.9%
 Gull 2.2 64-bit 4CPU3097+25−2544.5%+31.554.8%469
51.9%
 Vajolet2 2.5 64-bit 4CPU3096+24−2451.5%−9.254.0%493
55.2%
36Naum 4.6 64-bit 4CPU3095+14−1448.1%+11.354.3%1544
49.5%
 NirvanaChess 2.1c 64-bit 4CPU3095+22−2245.2%+30.947.7%608
50.7%
 Nemorino 4.00 64-bit 4CPU3094+22−2250.0%+1.852.9%624
51.2%
 Sting SF 4 64-bit 4CPU3094+23−2341.9%+48.948.9%562
62.2%
 Arasan 20.3 64-bit 4CPU3088+32−3252.5%−20.647.4%302
51.6%
 Critter 1.01 64-bit 4CPU3087+27−2746.1%+22.254.8%385
48.3%
 Laser 1.4 64-bit 4CPU3087+19−1949.6%+0.945.7%843
54.2%
 Pedone 1.7 64-bit 4CPU3086+19−1948.2%+11.256.4%801
56.6%
 Texel 1.05 64-bit 4CPU3084+17−1747.3%+18.451.4%1016
55.7%
 Andscacs 0.82 64-bit 4CPU3081+29−2950.6%−2.555.2%330
57.0%
 Critter 0.90 64-bit 4CPU3077+31−3147.6%+13.846.5%316
52.1%
 Andscacs 0.81 64-bit 4CPU3076+31−3148.7%+6.049.3%300
49.4%
 Hannibal 1.4b 64-bit 4CPU3076+15−1542.3%+48.051.3%1332
57.1%
 Protector 1.7.0 64-bit 4CPU3074+19−1944.1%+37.150.6%834
51.6%
 Demolito 2019-04-27 64-bit 4CPU3073+66−6650.0%−0.138.9%72
51.0%
37Amoeba 3.1 64-bit 4CPU3072+34−3442.1%+48.149.6%254
51.4%
 Nemorino 3.0 64-bit 4CPU3071+27−2747.9%+13.146.1%427
52.0%
 Protector 1.6.0 64-bit 4CPU3070+21−2243.2%+44.650.2%656
51.8%
38Rodent III 0.238 64-bit 4CPU3070+20−2047.2%+14.350.0%742
53.9%
 Rodent III 0.276 64-bit 4CPU3068+29−2949.6%+3.358.2%337
53.3%
 RubiChess 1.3 64-bit 4CPU3066+22−2252.8%−17.844.2%642
52.7%
39Demolito 2018-10-29 64-bit 4CPU3065+30−3048.6%+5.351.9%322
51.2%
 Defenchess 1.1f 64-bit 4CPU3064+18−1951.7%−11.545.3%916
59.3%
40Topple 0.7.5 64-bit 4CPU3060+29−2953.2%−19.645.3%360
50.7%
 Wasp 3.0 64-bit 4CPU3060+25−2551.1%−8.655.0%462
55.9%
 Texel 1.04 64-bit 4CPU3057+20−2143.1%+43.447.8%722
54.6%
 Alfil 15.8 64-bit 4CPU3056+22−2253.9%−24.747.9%631
50.6%
 NirvanaChess 2.0a 64-bit 4CPU3055+30−3044.7%+36.450.1%337
50.6%
 Protector 1.5.0 64-bit 4CPU3055+18−1842.5%+47.647.4%952
55.8%
 Amoeba 3.0 64-bit 4CPU3053+26−2654.8%−32.744.8%466
51.3%
 Pedone 1.6 64-bit 4CPU3052+23−2349.5%+3.157.7%508
54.9%
 Ethereal 9.00 64-bit 4CPU3050+23−2346.8%+18.745.1%570
65.0%
 Arasan 19.2 64-bit 4CPU3042+31−3151.0%−6.654.8%305
50.3%
 Vajolet2 2.4 64-bit 4CPU3042+19−1947.2%+18.245.7%878
51.3%
 Vajolet2 2.2 64-bit 4CPU3041+27−2747.0%+15.448.7%423
56.9%
 Wasp 2.6 64-bit 4CPU3039+18−1848.9%+7.547.2%968
51.3%
 Gull R375 64-bit 4CPU3038+22−2243.4%+37.457.4%605
54.3%
 Stockfish 1.6.3 64-bit 4CPU3036+22−2257.5%−49.545.3%651
57.6%
 Critter 0.80 64-bit 4CPU3033+31−3050.9%−8.948.3%321
50.3%
 Hannibal 1.3 64-bit 4CPU3032+22−2243.0%+43.548.6%642
50.0%
 Pedone 1.5 64-bit 4CPU3032+31−3149.5%+3.651.6%304
53.0%
 Wasp 2.01 64-bit 4CPU3031+30−3055.3%−32.554.5%321
54.8%
 Arasan 20.0 64-bit 4CPU3028+30−3047.4%+16.653.4%328
51.8%
 Vajolet2 2.3 64-bit 4CPU3027+31−3145.2%+25.453.5%303
53.9%
41‑42Bobcat 8.0 64-bit 4CPU3025+21−2148.3%+11.553.5%636
51.3%
41‑42Pirarucu 2.7.4 64-bit 4CPU3025+20−2053.6%−27.447.6%735
52.0%
 Pirarucu 2.9.5 64-bit 4CPU3024+33−3350.0%−2.553.2%269
51.7%
 Andscacs 0.80 64-bit 4CPU3023+31−3150.2%−1.546.7%317
49.6%
 Senpai 1.0 64-bit 4CPU3023+16−1646.2%+20.953.5%1095
70.9%
43Rybka 2.3.2a 64-bit 4CPU3017+13−1362.8%−86.243.9%1928
55.3%
44Spike 1.4 Leiden 4CPU3016+11−1145.2%+29.047.7%2862
49.3%
 Winter 0.6 64-bit 4CPU3016+32−3253.0%−27.635.6%329
55.5%
45‑46Crafty 25.2 64-bit 4CPU3013+16−1648.5%+9.642.5%1279
51.6%
45‑46chess22k 1.10 64-bit 4CPU3013+22−2246.7%+16.443.7%680
52.6%
 Nemorino 2.00 64-bit 4CPU3012+30−3047.0%+15.859.6%302
50.8%
 Arasan 19.0.1 64-bit 4CPU3011+31−3151.3%−11.940.9%318
52.1%
 Laser 1.3 64-bit 4CPU3010+29−3047.2%+15.355.8%321
51.6%
47Cheng 4.39 64-bit 4CPU3009+15−1549.4%+4.348.6%1333
49.6%
 Texel 1.03 64-bit 4CPU3009+31−3150.3%−0.947.0%313
66.9%
 Pedone 1.4.1 64-bit 4CPU3000+31−3148.5%+7.655.7%305
52.7%
 Vajolet2 2.1 64-bit 4CPU2998+25−2550.9%−3.448.5%462
53.8%
 Rodent III 0.210 64-bit 4CPU2996+28−2845.1%+33.342.5%402
58.1%
 Fizbo 1.5 64-bit 4CPU2992+27−2752.6%−16.048.5%410
68.1%
48Scorpio 2.8 64-bit 4CPU2983+25−2548.8%+7.246.3%492
53.2%
 Protector 1.4.0 64-bit 4CPU2982+19−1942.5%+49.042.9%912
55.1%
 Cheng4 0.38 64-bit 4CPU2980+24−2446.0%+23.342.4%531
53.6%
 Bobcat 7.6 64-bit 4CPU2978+31−3148.6%+8.941.8%318
59.5%
 Arasan 18.3 64-bit 4CPU2973+30−3046.6%+20.246.8%327
49.2%
 Rybka 2.2 64-bit 4CPU2973+20−1962.8%−87.441.2%879
56.6%
49EXchess 7.97b 64-bit 4CPU2971+18−1747.4%+18.445.9%1017
51.6%
 Arasan 18.2 64-bit 4CPU2970+28−2851.9%−14.850.3%388
54.1%
50Spark 1.0 64-bit 4CPU2968+13−1345.0%+32.646.6%1787
50.3%
 Stockfish 1.5.1 64-bit 4CPU2968+25−2553.7%−23.047.7%495
62.6%
 Demolito 2017-08-26 64-bit 4CPU2963+21−2140.2%+63.540.8%748
50.2%
 Winter 0.5 64-bit 4CPU2963+26−2650.4%−5.638.3%470
53.5%
 Protector 1.3.6 64-bit 4CPU2961+32−3246.6%+18.544.3%307
57.9%
 EXchess 7.88b 64-bit 4CPU2957+29−2945.4%+29.248.6%356
49.1%
51Toga II 4.0 64-bit 4CPU2957+18−1941.4%+56.940.4%958
54.8%
 Fizbo 1.31 64-bit 4CPU2955+30−2951.1%−6.941.9%358
61.4%
 Crafty 25.0 64-bit 4CPU2949+25−2548.1%+12.847.9%468
55.2%
 Stockfish 1.4 64-bit 4CPU2947+17−1754.2%−29.042.2%1131
54.5%
 Scorpio 2.7.9 64-bit 4CPU2945+22−2246.7%+21.140.5%659
60.1%
52Gaviota 1.0 64-bit 4CPU2942+16−1647.3%+15.945.4%1256
52.7%
53Tucano 7.07 64-bit 4CPU2940+33−3351.5%−9.544.7%291
51.7%
 EXchess 7.51b 64-bit 4CPU2939+32−3249.5%+5.445.6%296
51.4%
54The Baron 3.44 64-bit 4CPU2939+28−2846.8%+20.345.3%402
56.5%
55Marvin 3.3.2 64-bit 4CPU2935+36−3743.4%+39.944.7%228
51.3%
 Arasan 17.5 64-bit 4CPU2934+27−2748.4%+10.145.1%406
55.0%
 EXchess 7.71b 64-bit 4CPU2932+28−2853.3%−23.343.2%403
50.0%
 Spark 0.4 64-bit 4CPU2932+21−2143.0%+48.345.2%703
52.0%
 Bobcat 7.1 64-bit 4CPU2931+31−3147.5%+15.745.9%314
48.7%
 Fizbo 1.4 64-bit 4CPU2931+28−2845.9%+25.544.7%394
51.8%
 Ethereal 8.62 64-bit 4CPU2930+22−2244.2%+36.149.7%600
60.1%
 Arasan 18.0 64-bit 4CPU2926+29−2947.2%+15.241.5%378
48.2%
 Spark 0.3 64-bit 4CPU2926+23−2346.5%+20.849.7%572
52.7%
56Thinker 5.4d Inert 64-bit 4CPU2925+22−2246.0%+24.549.7%587
58.3%
 Thinker 5.4c Inert 64-bit 4CPU2922+15−1548.1%+13.339.4%1502
52.9%
 Marvin 3.2.0 64-bit 4CPU2921+21−2153.7%−25.943.0%698
58.4%
 Toga II 3.0 4CPU2918+22−2345.6%+27.349.0%592
59.8%
57DisasterArea 1.65 64-bit 4CPU2914+21−2144.2%+36.346.1%709
55.7%
58Gogobello 2.0 64-bit 4CPU2912+25−2550.8%−7.239.1%522
56.6%
 Crafty 23.8 64-bit 4CPU2908+32−3245.8%+27.547.0%287
58.9%
 Thinker 5.4a Inert 64-bit 4CPU2904+23−2347.3%+19.445.4%560
50.8%
 Toga II 1.4.1SE 4CPU2903+13−1348.5%+10.941.6%2041
51.0%
 Asymptote 0.6 64-bit 4CPU2902+95−9548.3%+3.356.7%30
49.9%
 The Baron 3.41 64-bit 4CPU2902+20−2039.1%+71.143.8%800
62.8%
 Cheng4 0.36c 64-bit 4CPU2896+30−3048.8%+6.346.6%326
51.2%
59‑61Bright 0.4a 4CPU2895+15−1547.4%+17.441.1%1495
52.6%
59‑61Glaurung 2.2 64-bit 4CPU2895+16−1647.0%+18.940.7%1259
48.8%
59‑61Tornado 6.0 64-bit 4CPU2895+26−2645.5%+27.843.3%469
51.4%
 Tornado 8.0 64-bit 4CPU2895+19−1945.2%+30.239.0%881
54.4%
 Tornado 7.0 64-bit 4CPU2893+25−2545.3%+30.739.2%502
56.6%
 Bright 0.5c 4CPU2890+23−2347.2%+19.242.9%616
56.9%
62Octochess r5506 64-bit 4CPU2887+21−2144.5%+35.946.7%715
55.9%
63MinkoChess 1.3 64-bit 4CPU2885+21−2146.0%+24.543.7%725
50.6%
 Tornado 4.88 64-bit 4CPU2885+26−2646.0%+24.241.5%479
51.0%
 Toga II 1.4 beta5c 4CPU2884+18−1851.7%−11.645.8%996
58.0%
 Pedone 1.3 64-bit 4CPU2881+29−2946.6%+19.951.0%355
50.7%
 Fruit Reloaded 3.2.1 64-bit 4CPU2880+18−1838.8%+75.039.1%1024
56.5%
 Crafty 24.1 64-bit 4CPU2877+31−3243.5%+41.839.1%322
56.9%
 Scorpio 2.7.6 64-bit 4CPU2874+26−2647.4%+16.444.0%445
64.7%
 Glaurung 2.1 64-bit 4CPU2867+19−1942.8%+51.241.3%946
53.5%
 Bobcat 6.4b 64-bit 4CPU2866+27−2748.3%+11.446.5%415
52.3%
 The Baron 3.29 64-bit 4CPU2865+25−2546.3%+22.643.1%489
51.5%
 EXchess 7.18b 64-bit 4CPU2864+33−3347.3%+16.738.4%292
60.1%
 Gaviota 0.86 64-bit 4CPU2859+24−2453.4%−26.632.6%617
49.0%
 Scorpio 2.7.5 64-bit 4CPU2859+33−3345.7%+25.150.0%266
52.9%
 Crafty 23.4 64-bit 4CPU2858+34−3446.9%+19.035.7%272
51.0%
 Arasan 16.3 64-bit 4CPU2857+34−3449.1%+4.540.2%276
53.6%
 Scorpio 2.7.7 64-bit 4CPU2855+32−3242.9%+44.641.3%310
51.5%
64Monolith 1.0 64-bit 4CPU2854+21−2248.6%+8.443.0%693
53.6%
65Counter 3.2 64-bit 4CPU2852+32−3250.7%−4.540.2%301
56.9%
 Igel 1.9.0 64-bit 4CPU2848+31−3241.0%+59.639.5%324
60.9%
66Shield 2.1 64-bit 4CPU2843+24−2448.7%+9.436.0%594
51.0%
67Cheese 2.0 64-bit 4CPU2842+30−3045.8%+26.639.2%355
60.3%
68‑69BugChess2 1.9 64-bit 4CPU2837+21−2143.4%+44.738.2%738
50.7%
68‑69Loop 13.6 (Loop 2007) 64-bit 4CPU2837+19−1948.3%+12.242.8%894
51.6%
 Crafty 23.3 64-bit 4CPU2836+31−3241.5%+55.538.2%325
64.9%
 Bright 0.3a 4CPU2829+18−1842.4%+51.141.8%988
52.8%
 Glaurung 2.0.1 64-bit 4CPU2828+17−1743.8%+38.943.5%1100
65.2%
 Octochess r5190 64-bit 4CPU2822+24−2445.9%+24.144.5%555
57.4%
 Pedone 1.1 64-bit 4CPU2818+31−3153.7%−31.239.5%347
51.4%
 Arminius 2018-12-23 64-bit 4CPU2817+44−4444.2%+41.236.4%165
53.8%
70Jonny 4.00 4CPU2815+25−2543.6%+42.335.0%540
71.3%
 Bright 0.2c 4CPU2805+21−2143.9%+40.443.2%724
59.2%
 Pedone 1.2 64-bit 4CPU2800+36−3648.4%+9.242.3%246
64.1%
 Crafty 23.1 64-bit 4CPU2791+36−3743.8%+42.536.9%241
53.4%
 Laser 1.0 64-bit 4CPU2788+37−3836.3%+90.139.2%227
58.5%
 Bagatur 1.7a 64-bit 4CPU2773+131−13445.0%+31.220.0%20
54.9%
 Glaurung 1.2.1 64-bit 4CPU2765+19−1940.2%+64.038.1%967
69.0%
 Crafty 23.0 64-bit 4CPU2758+18−1839.0%+77.934.1%1042
68.9%
71Fridolin 3.10 64-bit 4CPU2748+33−3349.5%−0.031.5%308
55.6%
 Alfil 13.1 64-bit 4CPU2745+28−2841.8%+53.434.1%440
77.0%
 Scorpio 2.0 32-bit 4CPU2731+24−2433.4%+114.936.7%607
62.7%
72Nebula 2.0 64-bit 4CPU2726+20−2045.1%+35.234.1%866
66.2%
 Scorpio 2.1 64-bit 4CPU2718+27−2734.4%+109.331.6%490
80.4%
 Igel 1.4.1 64-bit 4CPU2701+28−2850.7%−7.026.3%448
76.8%
73Hamsters 0.7.1 4CPU2685+32−3252.4%−13.936.2%318
54.2%
74RedQueen 1.1.98 64-bit 4CPU2683+27−2739.4%+80.428.5%494
65.3%
75ECE X3 64-bit 4CPU2676+23−2341.5%+68.423.4%709
57.2%
76Pharaon 3.5.1 4CPU2673+26−2643.6%+41.429.7%518
62.0%
77Jellyfish 1.1 64-bit 4CPU2667+29−2953.3%−25.432.3%403
60.3%
 RedQueen 1.1.97 64-bit 4CPU2662+22−2245.7%+26.833.3%726
71.5%
78Ghost 3.1 64-bit 4CPU2651+30−3053.9%−25.428.5%393
53.4%
79Arminius 2015-08-06 64-bit 4CPU2649+33−3344.2%+38.636.1%302
52.9%
 Gaviota 0.83 64-bit 4CPU2648+25−2547.3%+20.427.9%566
99.6%
 Fridolin 2.00 64-bit 4CPU2588+34−3441.9%+57.431.3%297
93.1%
80‑81Delphil 3.2 64-bit 4CPU2554+31−3138.2%+85.730.5%374
50.8%
80‑81Jazz 840 64-bit 4CPU2554+20−1957.8%−64.125.3%1000
91.5%
82Nemeton 1.8 4CPU2530+27−2749.9%+1.727.2%496
86.6%
83Jumbo 0.6.66 64-bit 4CPU2509+28−2850.0%−1.133.0%433
88.0%
84Myrddin 0.87 64-bit 4CPU2483+35−3538.9%+80.928.4%296
85.9%
 Invictus r228 64-bit 4CPU2340+242−29528.6%+167.40.0%7
 

Results matrix

Free 4-CPU engines (best versions only), top 12
#NameElo1
Shash
2
Ether
3
Komod
4
Nemor
5
Igel
6
SlowC
7
Xipho
8
Fire
9
RofCh
10
Pedon
11
Booot
12
RubiC
1ShashChess 15.0 64-bit 4CPU3537 21 − 11
+10−0=22
−56		 25 − 7
+18−0=14
+23		 21.5 − 8.5
+13−0=17
−50		26 − 6
+20−0=12
+12		27.5 − 4.5
+23−0=9
+51		26.5 − 5.5
+21−0=11
+6		24 − 4
+20−0=8
+28		25 − 7
+18−0=14
−55		28 − 4
+24−0=8
+45
2Ethereal 12.75 64-bit 4CPU339511 − 21
+0−10=22
+56		  17 − 15
+5−3=24
+1		 17 − 13
+6−2=22
−2		17.5 − 12.5
+6−1=23
−13		18.5 − 11.5
+7−0=23
−11		19 − 11
+9−1=20
−8		17.5 − 10.5
+8−1=19
−22		19 − 11
+8−0=22
−23		21.5 − 8.5
+13−0=17
+23
3Komodo 12 64-bit 4CPU3394       26 − 14
+13−1=26
+12		    
4Nemorino 6.00 64-bit 4CPU33827 − 25
+0−18=14
−23		15 − 17
+3−5=24
−1		   18 − 14
+6−2=24
+8		19 − 13
+8−2=22
+6		17.5 − 14.5
+10−7=15
−31		21 − 11
+13−3=16
+25		17 − 11
+8−2=18
−17		20 − 12
+9−1=22
−14		19.5 − 12.5
+8−1=23
−29
5Igel 2.8.0 64-bit 4CPU3360       30 − 21
+14−5=32
+11		32.5 − 18.5
+15−1=35
+29		 30.5 − 20.5
+17−7=27
−1		 
6SlowChess Blitz 2.4 64-bit 4CPU33598.5 − 21.5
+0−13=17
+50		13 − 17
+2−6=22
+2		 14 − 18
+2−6=24
−8		  15.5 − 12.5
+3−0=25
+6		15 − 15
+4−4=22
−36		18.5 − 12.5
+7−1=23
+5		17 − 11
+9−3=16
+7		18 − 12
+7−1=22
−5		18.5 − 11.5
+10−3=17
+1
7Xiphos 0.6 64-bit 4CPU33396 − 26
+0−20=12
−12		12.5 − 17.5
+1−6=23
+13		 13 − 19
+2−8=22
−6		 12.5 − 15.5
+0−3=25
−6		 16 − 16
+4−4=24
−14		16 − 16
+4−4=24
−26		15.5 − 10.5
+7−2=17
+14		19.5 − 12.5
+7−0=25
+18		18.5 − 13.5
+6−1=25
−5
8Fire 7.1 64-bit 4CPU33234.5 − 27.5
+0−23=9
−51		11.5 − 18.5
+0−7=23
+11		14 − 26
+1−13=26
−12		14.5 − 17.5
+7−10=15
+31		21 − 30
+5−14=32
−11		15 − 15
+4−4=22
+36		16 − 16
+4−4=24
+14		 17.5 − 14.5
+4−1=27
+13		15.5 − 12.5
+3−0=25
+6		19 − 13
+8−2=22
+29		21 − 11
+10−0=22
+55
9RofChade 2.3 64-bit 4CPU33145.5 − 26.5
+0−21=11
−6		11 − 19
+1−9=20
+8		 11 − 21
+3−13=16
−25		18.5 − 32.5
+1−15=35
−29		12.5 − 18.5
+1−7=23
−5		16 − 16
+4−4=24
+26		14.5 − 17.5
+1−4=27
−13		 13.5 − 14.5
+4−5=19
−18		17 − 15
+6−4=22
+2		18.5 − 13.5
+7−2=23
+20
10Pedone 3.0 64-bit 4CPU33044 − 24
+0−20=8
−28		10.5 − 17.5
+1−8=19
+22		 11 − 17
+2−8=18
+17		 11 − 17
+3−9=16
−7		10.5 − 15.5
+2−7=17
−14		12.5 − 15.5
+0−3=25
−6		14.5 − 13.5
+5−4=19
+18		 14 − 14
+4−4=20
−4		14 − 14
+5−5=18
−10
11Booot 6.4 64-bit 4CPU33017 − 25
+0−18=14
+55		11 − 19
+0−8=22
+23		 12 − 20
+1−9=22
+14		20.5 − 30.5
+7−17=27
+1		12 − 18
+1−7=22
+5		12.5 − 19.5
+0−7=25
−18		13 − 19
+2−8=22
−29		15 − 17
+4−6=22
−2		14 − 14
+4−4=20
+4		 14.5 − 17.5
+4−7=21
−35
12RubiChess 1.8 64-bit 4CPU32944 − 28
+0−24=8
−45		8.5 − 21.5
+0−13=17
−23		 12.5 − 19.5
+1−8=23
+29		 11.5 − 18.5
+3−10=17
−1		13.5 − 18.5
+1−6=25
+5		11 − 21
+0−10=22
−55		13.5 − 18.5
+2−7=23
−20		14 − 14
+5−5=18
+10		17.5 − 14.5
+7−4=21
+35		 
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 4-CPU engines (best versions only), top 12
#NameElo1
Sha
2
Eth
3
Kom
4
Nem
5
Ige
6
Slo
7
Xip
8
Fir
9
Rof
10
Ped
11
Boo
12
Rub
1ShashChess 15.0 64-bit 4CPU3537 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Ethereal 12.75 64-bit 4CPU33950.0 51.980.797.599.1100.0100.0100.0100.0100.0100.0
3Komodo 12 64-bit 4CPU33940.048.1 79.597.799.1100.0100.0100.0100.0100.0100.0
4Nemorino 6.00 64-bit 4CPU33820.019.320.5 87.892.699.9100.0100.0100.0100.0100.0
5Igel 2.8.0 64-bit 4CPU33600.02.52.312.2 53.490.499.499.899.7100.0100.0
6SlowChess Blitz 2.4 64-bit 4CPU33590.00.90.97.446.6 92.299.899.999.9100.0100.0
7Xiphos 0.6 64-bit 4CPU33390.00.00.00.19.67.8 96.098.598.3100.0100.0
8Fire 7.1 64-bit 4CPU33230.00.00.00.00.60.24.0 78.587.598.499.3
9RofChade 2.3 64-bit 4CPU33140.00.00.00.00.20.11.521.5 72.687.994.1
10Pedone 3.0 64-bit 4CPU33040.00.00.00.00.30.11.712.527.4 58.671.7
11Booot 6.4 64-bit 4CPU33010.00.00.00.00.00.00.01.612.141.4 68.8
12RubiChess 1.8 64-bit 4CPU32940.00.00.00.00.00.00.00.75.928.331.2 
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)
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  Recalibrate reference list to current one using all common engines
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  Recalibrate current list to reference using all common engines

Created in 2005-2013 by CCRL team
Last games added on January 24, 2021