CCRL 40/15
Downloads and Statistics
July 11, 2020
Testing summary:
Total: 1'160'846 games
played by 2'685 programs

White wins: 400'696 (34.5%)
Black wins: 296'236 (25.5%)
Draws: 463'914 (40.0%)
White score: 54.5%

Free 4-CPU engines

Comparing 319 engines!
84 best versions of selected engines played 10102 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 July 11, 2020 with Bayeselo based on 1'160'846 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+−
1Stockfish 2019-10-09 64-bit 4CPU3496+27−2674.0%−153.650.6%466 
72.8%
 Stockfish 11 64-bit 4CPU3486+20−2072.6%−141.751.8%778
65.2%
 SugaR NN 1.1 64-bit 4CPU3481+18−1872.7%−148.749.5%998
92.6%
 Stockfish 10 64-bit 4CPU3463+16−1672.0%−145.352.0%1307
53.8%
 SugaR 1.6.1 64-bit 4CPU3462+25−2569.0%−118.557.4%479
66.9%
 Stockfish 270918 64-bit 4CPU3454+28−2777.9%−189.543.3%457
64.1%
 ShashChess 8.0 64-bit 4CPU3447+18−1766.9%−101.662.6%934
82.1%
 SugaR XPrO 1.5.3 64-bit 4CPU3433+24−2471.8%−143.951.3%544
54.7%
 Stockfish 9 64-bit 4CPU3431+15−1572.3%−152.850.5%1423
95.5%
 SugaR XPrO 1.4 64-bit 4CPU3411+20−2072.3%−150.551.8%840
55.6%
 asmFish 051117 64-bit 4CPU3409+20−1969.8%−130.555.7%819
75.2%
 SugaR XPrO 1.2 64-bit 4CPU3399+21−2070.4%−136.152.5%754
63.7%
 ShashChess Pro 1.0 64-bit 4CPU3392+33−3365.6%−94.161.7%256
76.9%
 Stockfish 8 64-bit 4CPU3378+13−1465.1%−96.362.1%1647
64.9%
 SugaR XPrO 1.3 64-bit 4CPU3373+23−2266.0%−102.957.4%598
87.6%
2Ethereal 12.00 64-bit 4CPU3354+23−2351.6%−7.767.8%518
61.7%
 Ethereal 11.75 64-bit 4CPU3349+21−2147.3%+14.865.0%614
55.7%
3Komodo 10 64-bit 4CPU3347+22−2276.6%−173.244.0%700
70.0%
4Xiphos 0.6 64-bit 4CPU3338+19−1946.4%+23.465.5%786
80.0%
 Ethereal 11.53 64-bit 4CPU3326+23−2252.3%−13.264.0%542
48.7%
 Stockfish 7 64-bit 4CPU3326+15−1567.0%−105.657.3%1304
65.0%
5Fire 7.1 64-bit 4CPU3322+12−1251.8%−11.661.5%2043
58.7%
6RofChade 2.3 64-bit 4CPU3319+22−2244.8%+30.770.2%526
62.2%
7SlowChess Blitz Classic 2.2 64-bit 4CPU3313+32−3242.2%+45.764.3%258
59.2%
 Xiphos 0.5 64-bit 4CPU3309+19−1943.9%+38.964.2%745
52.2%
 Komodo 9 64-bit 4CPU3308+20−1970.4%−124.252.7%804
72.1%
8Booot 6.4 64-bit 4CPU3299+22−2241.9%+47.866.6%560
49.2%
 Ethereal 11.00 64-bit 4CPU3299+19−1947.0%+17.963.2%778
48.9%
 Ethereal 11.25 64-bit 4CPU3299+21−2146.3%+24.165.5%588
72.2%
 Stockfish 6 64-bit 4CPU3291+14−1465.3%−94.257.3%1542
62.7%
 Fire 6.1 64-bit 4CPU3287+18−1848.5%+8.158.4%940
55.1%
9‑10Laser 1.7 64-bit 4CPU3286+15−1543.9%+38.062.5%1223
48.3%
9‑10RubiChess 1.7.3 64-bit 4CPU3286+24−2458.0%−47.764.1%462
53.7%
 Komodo 8 64-bit 4CPU3285+16−1669.8%−126.749.0%1298
58.2%
11Defenchess 2.2 64-bit 4CPU3282+17−1742.6%+47.760.9%998
51.7%
 RofChade 2.202 64-bit 4CPU3282+18−1841.4%+53.159.8%858
58.4%
 SlowChess Blitz Classic 2.1 64-bit 4CPU3279+22−2242.1%+50.654.4%599
59.7%
 Ethereal 10.55 64-bit 4CPU3274+25−2449.8%−1.557.4%488
51.0%
12Fizbo 2 64-bit 4CPU3274+12−1243.6%+39.755.0%2079
67.9%
 Stockfish 5 64-bit 4CPU3269+15−1567.7%−109.254.0%1346
56.9%
13Schooner 2.2 64-bit 4CPU3266+26−2645.6%+28.460.7%420
53.5%
 Fire 5 64-bit 4CPU3265+18−1846.9%+18.062.5%867
57.0%
14Andscacs 0.94 64-bit 4CPU3263+18−1847.2%+17.854.2%907
47.8%
 Andscacs 0.95 64-bit 4CPU3263+17−1842.3%+48.059.3%943
54.3%
 Booot 6.3.1 64-bit 4CPU3262+15−1543.0%+44.257.4%1366
73.5%
 Fizbo 1.9 64-bit 4CPU3255+17−1745.7%+25.955.5%1004
62.2%
 Xiphos 0.4 64-bit 4CPU3250+19−1943.8%+39.861.1%830
54.8%
 RofChade 2.1 64-bit 4CPU3249+25−2544.4%+36.560.0%452
71.4%
 Andscacs 0.921 64-bit 4CPU3240+16−1650.7%−6.847.5%1225
52.1%
 Andscacs 0.93 64-bit 4CPU3239+18−1842.9%+45.454.8%938
65.8%
 Stockfish DD 64-bit 4CPU3234+17−1763.0%−78.556.1%1032
63.6%
 Andscacs 0.91 64-bit 4CPU3229+22−2242.5%+47.459.2%596
50.5%
 RubiChess 1.6 64-bit 4CPU3229+25−2559.5%−59.150.9%466
51.9%
 Komodo 7a 64-bit 4CPU3228+18−1860.7%−65.359.0%897
64.7%
 Andscacs 0.89 64-bit 4CPU3222+21−2145.9%+28.855.0%662
59.9%
15Arasan 21.4 64-bit 4CPU3218+25−2545.0%+26.255.6%464
50.5%
 Komodo TCEC 64-bit 4CPU3218+18−1760.8%−68.654.9%955
53.2%
 Booot 6.2 64-bit 4CPU3217+14−1442.9%+46.259.3%1517
50.4%
 Laser 1.6 64-bit 4CPU3217+16−1643.5%+43.555.2%1124
56.3%
 Schooner 2.1 64-bit 4CPU3214+23−2344.6%+34.255.5%550
53.6%
 Andscacs 0.88 64-bit 4CPU3213+28−2845.0%+30.954.8%387
54.9%
 Komodo 6 64-bit 4CPU3211+17−1658.6%−52.856.7%1065
61.2%
 Andscacs 0.90 64-bit 4CPU3206+24−2450.3%+3.055.1%515
51.8%
 Stockfish 4 64-bit 4CPU3206+16−1660.1%−60.459.1%1086
62.5%
 Komodo 5.1 64-bit 4CPU3202+20−2060.9%−67.355.2%747
55.2%
 Andscacs 0.872 64-bit 4CPU3200+24−2451.3%−5.458.8%476
49.2%
 Schooner 2.0.34 64-bit 4CPU3200+20−2049.3%+3.457.9%734
55.3%
 Fire 4 64-bit 4CPU3198+12−1246.5%+22.359.7%1885
53.7%
 Arasan 21.3 64-bit 4CPU3197+30−3046.7%+25.955.7%314
65.3%
 Ethereal 10.00 64-bit 4CPU3189+20−2053.4%−22.850.8%788
61.6%
16Vajolet2 2.7 64-bit 4CPU3184+25−2552.3%−13.855.8%459
54.8%
17Houdini 1.5a 64-bit 4CPU3182+17−1760.4%−68.745.2%1053
51.9%
 SlowChess Blitz Classic 1.9 64-bit 4CPU3182+27−2753.3%−19.458.0%383
52.8%
18Gull 3 64-bit 4CPU3181+9−942.5%+47.954.2%3783
53.0%
 Fizbo 1.8 64-bit 4CPU3180+20−2143.9%+41.349.3%724
48.9%
19NirvanaChess 2.4 64-bit 4CPU3180+13−1341.7%+55.854.2%1828
55.9%
 Gull 2.8b 64-bit 4CPU3178+19−1949.1%+4.051.8%797
49.8%
 Xiphos 0.3 64-bit 4CPU3178+21−2149.2%+3.854.2%660
58.0%
 RofChade 2.0 64-bit 4CPU3175+21−2149.7%+1.657.7%620
55.6%
20Equinox 3.20 64-bit 4CPU3173+11−1142.2%+51.159.0%2671
55.2%
 Arasan 21.2 64-bit 4CPU3171+30−3052.2%−12.060.6%302
58.0%
 Arasan 21.1 64-bit 4CPU3167+27−2751.2%−7.559.5%383
49.2%
 Booot 6.1 64-bit 4CPU3167+20−2042.0%+49.860.3%726
50.6%
21ChessBrainVB 3.72 4CPU3167+30−3045.0%+30.651.3%320
51.3%
 Stockfish 3 64-bit 4CPU3166+21−2156.0%−34.957.8%663
51.4%
 ChessBrainVB 3.74 4CPU3164+128−13046.9%+18.056.3%16
50.5%
 RubiChess 1.5 64-bit 4CPU3163+29−2952.4%−14.454.3%348
53.2%
 Equinox 3.30 64-bit 4CPU3162+18−1843.9%+38.358.9%896
60.3%
22Critter 1.6a 64-bit 4CPU3159+8−845.3%+31.854.6%5429
68.5%
23Hannibal 1.7 64-bit 4CPU3155+14−1442.3%+48.054.5%1577
60.3%
 NirvanaChess 2.3 64-bit 4CPU3152+18−1841.4%+55.656.8%869
56.6%
 Fire 3.0 64-bit 4CPU3150+17−1749.5%+2.658.2%948
53.3%
24‑25Bouquet 1.8 64-bit 4CPU3149+11−1143.6%+41.456.7%2427
50.6%
 Critter 1.4 64-bit 4CPU3149+18−1860.0%−61.354.2%907
49.0%
24‑25Nemorino 5.00 64-bit 4CPU3149+18−1848.1%+10.352.3%878
57.5%
 Stockfish 2.2.2 64-bit 4CPU3147+16−1659.2%−56.753.4%1141
52.8%
 Andscacs 0.86 64-bit 4CPU3146+20−2042.8%+46.653.9%761
51.8%
 Critter 1.2 64-bit 4CPU3145+20−2058.9%−54.752.9%762
56.8%
 Laser 1.5 64-bit 4CPU3143+20−2049.4%+7.954.5%723
52.2%
 Gull 2.3 64-bit 4CPU3142+17−1747.4%+14.959.3%982
49.4%
 Stockfish 2.3.1 64-bit 4CPU3142+19−1955.4%−33.052.5%846
53.3%
26Texel 1.07 64-bit 4CPU3141+14−1449.5%+5.549.2%1620
55.8%
 NirvanaChess 2.2 64-bit 4CPU3140+17−1741.5%+54.857.4%1001
48.3%
27Pedone 1.8 64-bit 4CPU3140+28−2846.7%+18.957.4%350
53.4%
28Protector 1.9.0 64-bit 4CPU3139+15−1546.4%+24.753.9%1338
56.6%
29Alfil 15.7 64-bit 4CPU3137+17−1742.9%+48.256.3%1006
53.0%
 Vajolet2 2.6.1 64-bit 4CPU3136+21−2150.8%−4.860.3%605
55.6%
 Andscacs 0.85 64-bit 4CPU3134+25−2543.9%+42.253.1%467
50.1%
30‑31Igel 2.3.1 64-bit 4CPU3133+27−2750.2%−1.953.2%406
51.2%
30‑31Wasp 3.75 64-bit 4CPU3133+29−2948.9%+3.956.3%352
52.1%
 Bouquet 1.5 64-bit 4CPU3132+23−2346.4%+20.263.6%500
49.9%
 Sting SF 6 64-bit 4CPU3132+28−2850.8%−6.661.0%354
50.1%
 Texel 1.06 64-bit 4CPU3132+20−2046.1%+25.253.6%739
50.8%
 Sting SF 4.8.4 64-bit 4CPU3131+29−2953.3%−20.462.4%330
57.4%
 DeepSaros 4.1.6 64-bit 4CPU3128+26−2645.2%+28.457.5%419
50.1%
 Wasp 3.60 64-bit 4CPU3128+34−3446.8%+18.750.8%248
50.3%
 Pedone 1.9 64-bit 4CPU3127+28−2849.4%+1.755.4%354
51.6%
 Stockfish 2.0.1 64-bit 4CPU3127+24−2456.4%−41.048.6%514
56.3%
 ChessBrainVB 3.68 4CPU3124+26−2649.2%+3.851.6%428
49.9%
 Gull 3.1 64-bit 4CPU3124+30−3045.4%+33.245.1%359
49.1%
 Protector 1.8.0 64-bit 4CPU3124+28−2750.4%−1.454.7%386
53.8%
32‑33BlackMamba 2.0 64-bit 4CPU3123+15−1544.2%+37.554.3%1408
49.5%
32‑33iCE 4.0 64-bit 4CPU3123+27−2747.9%+10.052.3%400
56.2%
 Arasan 20.4.1 64-bit 4CPU3120+26−2551.7%−10.650.2%452
49.7%
 Fizbo 1.7 64-bit 4CPU3120+27−2756.1%−38.552.2%410
54.7%
 Elektro 1.2 64-bit 4CPU3118+23−2346.1%+27.155.5%546
51.1%
 Sting SF 5 64-bit 4CPU3118+25−2548.1%+12.154.0%465
57.2%
 Stockfish 1.9.1 64-bit 4CPU3114+22−2260.9%−73.246.6%639
53.3%
 IvanHoe 9.46h 64-bit 4CPU3113+14−1453.2%−19.259.5%1542
51.1%
 Stockfish 2.1.1 64-bit 4CPU3113+27−2754.7%−29.448.3%406
53.1%
 RobboLito 0.21Q 64-bit 4CPU3111+22−2250.9%−5.662.7%569
53.5%
 Hannibal 1.5 64-bit 4CPU3110+19−1953.2%−20.457.1%819
53.3%
 Sting SF 3 64-bit 4CPU3109+21−2147.7%+11.558.5%644
50.2%
 Sting SF 9 64-bit 4CPU3109+28−2848.0%+10.847.2%381
50.8%
 Bouquet 1.6 64-bit 4CPU3108+21−2150.0%+0.060.7%641
50.0%
34‑35Senpai 2.0 64-bit 4CPU3108+19−1951.5%−11.248.7%816
51.6%
 Sting SF 2 64-bit 4CPU3108+27−2748.8%+8.058.1%375
49.5%
34‑35Winter 0.7 64-bit 4CPU3108+25−2645.1%+31.447.1%463
52.1%
 Stockfish 1.8 64-bit 4CPU3107+18−1860.8%−73.650.4%918
52.9%
 ChessBrainVB 3.66 4CPU3106+28−2854.2%−27.448.7%378
53.6%
 Andscacs 0.83 64-bit 4CPU3104+29−2946.6%+18.951.2%338
51.6%
 Stockfish 1.7.1 64-bit 4CPU3103+19−1960.4%−67.952.6%882
52.4%
 Xiphos 0.2.2 64-bit 4CPU3102+26−2647.3%+14.253.6%414
52.6%
 Wasp 3.50 64-bit 4CPU3101+20−2050.4%−4.753.6%785
58.0%
 Gull 2.2 64-bit 4CPU3098+25−2544.5%+31.154.8%469
51.7%
 Vajolet2 2.5 64-bit 4CPU3097+24−2451.5%−9.754.0%493
55.3%
36Naum 4.6 64-bit 4CPU3095+14−1448.1%+11.854.3%1544
50.0%
 Nemorino 4.00 64-bit 4CPU3095+22−2250.0%+1.552.9%624
49.6%
 NirvanaChess 2.1c 64-bit 4CPU3095+23−2345.2%+31.447.7%608
51.8%
 Sting SF 4 64-bit 4CPU3094+23−2341.9%+49.648.9%562
62.1%
 Arasan 20.3 64-bit 4CPU3088+32−3252.5%−19.847.4%302
50.3%
 Laser 1.4 64-bit 4CPU3088+19−1949.6%+0.445.7%843
51.8%
 Critter 1.01 64-bit 4CPU3087+27−2746.1%+22.654.8%385
51.1%
 Pedone 1.7 64-bit 4CPU3087+19−1948.2%+10.956.4%801
57.3%
 Texel 1.05 64-bit 4CPU3084+17−1747.3%+19.051.4%1016
55.7%
 Andscacs 0.82 64-bit 4CPU3082+29−2950.6%−3.155.2%330
57.0%
 Critter 0.90 64-bit 4CPU3078+31−3147.6%+13.346.5%316
52.1%
 Andscacs 0.81 64-bit 4CPU3077+31−3148.7%+5.549.3%300
49.3%
 Hannibal 1.4b 64-bit 4CPU3077+15−1542.3%+47.551.3%1332
57.1%
 Protector 1.7.0 64-bit 4CPU3075+19−1944.1%+36.650.6%834
53.9%
37Amoeba 3.1 64-bit 4CPU3073+34−3442.1%+48.349.6%254
49.6%
 Demolito 2019-04-27 64-bit 4CPU3073+66−6650.0%−0.038.9%72
51.8%
 Nemorino 3.0 64-bit 4CPU3072+27−2747.9%+12.646.1%427
52.0%
 Protector 1.6.0 64-bit 4CPU3071+21−2243.2%+44.250.2%656
51.7%
38Rodent III 0.238 64-bit 4CPU3070+20−2047.2%+15.050.0%742
54.1%
 Rodent III 0.276 64-bit 4CPU3068+29−2949.6%+3.658.2%337
53.0%
 RubiChess 1.3 64-bit 4CPU3067+22−2252.8%−18.344.2%642
54.8%
 Defenchess 1.1f 64-bit 4CPU3065+18−1851.7%−11.945.3%916
49.1%
39Demolito 2018-10-29 64-bit 4CPU3065+30−3048.6%+5.751.9%322
58.8%
40Topple 0.7.5 64-bit 4CPU3061+29−2953.2%−20.145.3%360
50.5%
 Wasp 3.0 64-bit 4CPU3060+25−2551.1%−8.255.0%462
55.8%
 Texel 1.04 64-bit 4CPU3058+21−2143.1%+43.047.8%722
54.7%
 Alfil 15.8 64-bit 4CPU3056+22−2253.9%−24.047.9%631
50.6%
 NirvanaChess 2.0a 64-bit 4CPU3056+30−3044.7%+35.650.1%337
50.6%
 Protector 1.5.0 64-bit 4CPU3056+18−1842.5%+47.247.4%952
55.5%
 Amoeba 3.0 64-bit 4CPU3053+26−2654.8%−32.244.8%466
51.5%
 Pedone 1.6 64-bit 4CPU3053+23−2349.5%+2.657.7%508
54.2%
 Ethereal 9.00 64-bit 4CPU3051+23−2346.8%+18.545.1%570
65.7%
 Arasan 19.2 64-bit 4CPU3043+31−3151.0%−6.954.8%305
50.1%
 Vajolet2 2.4 64-bit 4CPU3043+19−1947.2%+17.945.7%878
51.6%
 Vajolet2 2.2 64-bit 4CPU3042+27−2747.0%+15.048.7%423
57.3%
 Gull R375 64-bit 4CPU3039+22−2243.4%+36.757.4%605
48.6%
 Wasp 2.6 64-bit 4CPU3039+18−1848.9%+8.247.2%968
56.5%
 Stockfish 1.6.3 64-bit 4CPU3037+22−2257.5%−50.145.3%651
57.3%
 Critter 0.80 64-bit 4CPU3033+30−3050.9%−8.448.3%321
50.2%
 Hannibal 1.3 64-bit 4CPU3033+22−2243.0%+42.848.6%642
50.0%
 Pedone 1.5 64-bit 4CPU3033+31−3149.5%+3.551.6%304
52.9%
 Wasp 2.01 64-bit 4CPU3031+30−3055.3%−31.754.5%321
54.9%
 Arasan 20.0 64-bit 4CPU3029+30−3047.4%+16.053.4%328
51.8%
 Vajolet2 2.3 64-bit 4CPU3028+31−3145.2%+25.253.5%303
53.9%
41Bobcat 8.0 64-bit 4CPU3026+21−2148.3%+11.253.5%636
50.9%
42Pirarucu 2.7.4 64-bit 4CPU3025+21−2053.6%−26.847.6%735
52.5%
 Pirarucu 2.9.5 64-bit 4CPU3024+33−3350.0%−2.153.2%269
51.7%
 Andscacs 0.80 64-bit 4CPU3023+31−3150.2%−1.146.7%317
49.5%
 Senpai 1.0 64-bit 4CPU3023+16−1746.2%+21.553.5%1095
71.7%
43Rybka 2.3.2a 64-bit 4CPU3017+13−1362.8%−85.943.9%1928
53.9%
44Spike 1.4 Leiden 4CPU3016+11−1145.2%+29.547.7%2862
50.1%
 Winter 0.6 64-bit 4CPU3016+32−3253.0%−27.735.6%329
54.7%
45Crafty 25.2 64-bit 4CPU3014+16−1648.5%+9.242.5%1279
51.5%
46chess22k 1.10 64-bit 4CPU3013+22−2246.7%+16.943.7%680
53.7%
 Arasan 19.0.1 64-bit 4CPU3012+32−3151.3%−12.440.9%318
49.1%
 Nemorino 2.00 64-bit 4CPU3012+30−3047.0%+16.559.6%302
55.5%
47Cheng 4.39 64-bit 4CPU3010+15−1549.4%+3.948.6%1333
48.4%
 Laser 1.3 64-bit 4CPU3010+30−2947.2%+16.055.8%321
51.0%
 Texel 1.03 64-bit 4CPU3010+31−3150.3%−1.447.0%313
66.9%
 Pedone 1.4.1 64-bit 4CPU3000+30−3048.5%+8.355.7%305
52.7%
 Vajolet2 2.1 64-bit 4CPU2999+25−2550.9%−4.048.5%462
53.7%
 Rodent III 0.210 64-bit 4CPU2997+28−2845.1%+33.042.5%402
58.3%
 Fizbo 1.5 64-bit 4CPU2993+27−2752.6%−16.548.5%410
67.9%
48Scorpio 2.8 64-bit 4CPU2984+25−2548.8%+6.746.3%492
53.3%
 Protector 1.4.0 64-bit 4CPU2982+19−1942.5%+49.542.9%912
55.2%
 Cheng4 0.38 64-bit 4CPU2980+24−2446.0%+23.842.4%531
53.7%
 Bobcat 7.6 64-bit 4CPU2978+31−3148.6%+9.341.8%318
59.4%
 Arasan 18.3 64-bit 4CPU2973+30−3046.6%+20.746.8%327
49.7%
 Rybka 2.2 64-bit 4CPU2973+20−1962.8%−87.141.2%879
56.2%
 Arasan 18.2 64-bit 4CPU2971+28−2851.9%−15.250.3%388
48.2%
49EXchess 7.97b 64-bit 4CPU2971+18−1847.4%+18.945.9%1017
58.1%
50Spark 1.0 64-bit 4CPU2969+13−1345.0%+32.046.6%1787
50.7%
 Stockfish 1.5.1 64-bit 4CPU2969+25−2453.7%−23.547.7%495
62.1%
 Demolito 2017-08-26 64-bit 4CPU2964+21−2140.2%+63.140.8%748
50.3%
 Winter 0.5 64-bit 4CPU2963+26−2650.4%−5.038.3%470
53.7%
 Protector 1.3.6 64-bit 4CPU2961+32−3246.6%+19.144.3%307
57.7%
51Toga II 4.0 64-bit 4CPU2958+19−1941.4%+56.640.4%958
51.3%
 EXchess 7.88b 64-bit 4CPU2957+29−2945.4%+29.648.6%356
53.4%
 Fizbo 1.31 64-bit 4CPU2955+30−2951.1%−6.341.9%358
61.4%
 Crafty 25.0 64-bit 4CPU2949+25−2548.1%+13.347.9%468
55.8%
 Stockfish 1.4 64-bit 4CPU2947+17−1754.2%−28.742.2%1131
53.7%
 Scorpio 2.7.9 64-bit 4CPU2946+22−2246.7%+20.740.5%659
60.3%
52Gaviota 1.0 64-bit 4CPU2942+16−1647.3%+16.445.4%1256
52.4%
53Tucano 7.07 64-bit 4CPU2941+33−3351.5%−9.844.7%291
52.1%
 EXchess 7.51b 64-bit 4CPU2940+32−3249.5%+4.945.6%296
51.3%
54The Baron 3.44 64-bit 4CPU2939+28−2846.8%+20.845.3%402
58.9%
 Arasan 17.5 64-bit 4CPU2935+27−2748.4%+9.645.1%406
48.7%
55Marvin 3.3.2 64-bit 4CPU2935+36−3743.4%+40.444.7%228
55.4%
 EXchess 7.71b 64-bit 4CPU2932+28−2853.3%−22.843.2%403
50.5%
 Fizbo 1.4 64-bit 4CPU2932+28−2845.9%+24.844.7%394
49.4%
 Spark 0.4 64-bit 4CPU2932+21−2143.0%+48.845.2%703
51.9%
 Bobcat 7.1 64-bit 4CPU2931+31−3147.5%+16.245.9%314
50.1%
 Ethereal 8.62 64-bit 4CPU2931+22−2244.2%+35.849.7%600
59.9%
 Spark 0.3 64-bit 4CPU2927+23−2346.5%+20.349.7%572
51.6%
 Arasan 18.0 64-bit 4CPU2926+29−2947.2%+15.641.5%378
50.4%
56Thinker 5.4d Inert 64-bit 4CPU2926+22−2246.0%+24.049.7%587
58.8%
 Thinker 5.4c Inert 64-bit 4CPU2923+15−1548.1%+12.739.4%1502
51.8%
 Marvin 3.2.0 64-bit 4CPU2922+21−2153.7%−26.343.0%698
58.8%
 Toga II 3.0 4CPU2919+22−2345.6%+26.749.0%592
59.6%
57DisasterArea 1.65 64-bit 4CPU2915+21−2144.2%+35.746.1%709
55.7%
58Gogobello 2.0 64-bit 4CPU2912+25−2550.8%−6.739.1%522
56.7%
 Crafty 23.8 64-bit 4CPU2909+32−3345.8%+27.047.0%287
59.2%
 Thinker 5.4a Inert 64-bit 4CPU2904+23−2347.3%+19.845.4%560
50.8%
 Toga II 1.4.1SE 4CPU2904+13−1348.5%+10.341.6%2041
50.8%
 Asymptote 0.6 64-bit 4CPU2903+95−9548.3%+2.756.7%30
49.8%
 The Baron 3.41 64-bit 4CPU2903+20−2039.1%+70.743.8%800
63.1%
 Cheng4 0.36c 64-bit 4CPU2897+30−3048.8%+5.746.6%326
51.6%
59‑60Bright 0.4a 4CPU2896+15−1547.4%+16.841.1%1495
50.2%
59‑60Tornado 6.0 64-bit 4CPU2896+26−2645.5%+27.243.3%469
51.6%
61Glaurung 2.2 64-bit 4CPU2895+16−1647.0%+19.240.7%1259
49.9%
 Tornado 8.0 64-bit 4CPU2895+19−1945.2%+30.739.0%881
54.5%
 Tornado 7.0 64-bit 4CPU2893+25−2545.3%+31.139.2%502
56.5%
 Bright 0.5c 4CPU2890+23−2347.2%+19.642.9%616
56.4%
62Octochess r5506 64-bit 4CPU2888+21−2144.5%+35.746.7%715
56.5%
63MinkoChess 1.3 64-bit 4CPU2885+21−2146.0%+24.943.7%725
52.6%
 Toga II 1.4 beta5c 4CPU2885+18−1851.7%−12.445.8%996
48.4%
 Tornado 4.88 64-bit 4CPU2885+26−2646.0%+24.741.5%479
60.1%
 Fruit Reloaded 3.2.1 64-bit 4CPU2881+18−1838.8%+74.639.1%1024
49.6%
 Pedone 1.3 64-bit 4CPU2881+29−2946.6%+20.351.0%355
56.4%
 Crafty 24.1 64-bit 4CPU2878+31−3243.5%+41.139.1%322
57.0%
 Scorpio 2.7.6 64-bit 4CPU2874+26−2647.4%+16.944.0%445
65.1%
 Glaurung 2.1 64-bit 4CPU2868+19−1942.8%+50.541.3%946
53.1%
 Bobcat 6.4b 64-bit 4CPU2866+27−2748.3%+11.846.5%415
53.3%
 EXchess 7.18b 64-bit 4CPU2865+33−3347.3%+16.238.4%292
48.5%
 The Baron 3.29 64-bit 4CPU2865+25−2546.3%+22.943.1%489
60.3%
 Scorpio 2.7.5 64-bit 4CPU2860+33−3345.7%+24.450.0%266
51.3%
 Gaviota 0.86 64-bit 4CPU2859+24−2453.4%−26.332.6%617
51.9%
 Crafty 23.4 64-bit 4CPU2858+34−3446.9%+19.435.7%272
51.0%
 Arasan 16.3 64-bit 4CPU2857+34−3449.1%+5.040.2%276
55.2%
64Monolith 1.0 64-bit 4CPU2855+22−2248.6%+7.943.0%693
48.8%
 Scorpio 2.7.7 64-bit 4CPU2855+32−3242.9%+45.041.3%310
54.2%
65Counter 3.2 64-bit 4CPU2853+32−3250.7%−4.840.2%301
57.0%
 Igel 1.9.0 64-bit 4CPU2849+31−3241.0%+59.239.5%324
60.5%
66‑67Cheese 2.0 64-bit 4CPU2843+30−3045.8%+26.139.2%355
49.1%
66‑67Shield 2.1 64-bit 4CPU2843+24−2448.7%+9.936.0%594
63.3%
68BugChess2 1.9 64-bit 4CPU2838+21−2143.4%+44.138.2%738
52.3%
 Crafty 23.3 64-bit 4CPU2837+31−3241.5%+55.138.2%325
48.7%
69Loop 13.6 (Loop 2007) 64-bit 4CPU2837+19−1948.3%+12.442.8%894
72.2%
 Bright 0.3a 4CPU2829+18−1842.4%+51.541.8%988
52.9%
 Glaurung 2.0.1 64-bit 4CPU2828+17−1743.8%+39.243.5%1100
64.6%
 Octochess r5190 64-bit 4CPU2823+24−2445.9%+23.644.5%555
57.6%
 Pedone 1.1 64-bit 4CPU2819+31−3153.7%−32.139.5%347
51.2%
 Arminius 2018-12-23 64-bit 4CPU2818+44−4544.2%+40.936.4%165
53.9%
70Jonny 4.00 4CPU2815+25−2543.6%+42.635.0%540
71.8%
 Bright 0.2c 4CPU2805+21−2143.9%+40.643.2%724
58.8%
 Pedone 1.2 64-bit 4CPU2801+36−3648.4%+8.742.3%246
64.4%
 Crafty 23.1 64-bit 4CPU2791+36−3743.8%+42.736.9%241
53.1%
 Laser 1.0 64-bit 4CPU2789+37−3836.3%+89.539.2%227
58.4%
 Bagatur 1.7a 64-bit 4CPU2774+131−13445.0%+30.820.0%20
55.2%
 Glaurung 1.2.1 64-bit 4CPU2765+19−1940.2%+64.238.1%967
68.8%
 Crafty 23.0 64-bit 4CPU2758+18−1839.0%+78.134.1%1042
68.4%
71Fridolin 3.10 64-bit 4CPU2749+33−3349.5%−0.631.5%308
55.6%
 Alfil 13.1 64-bit 4CPU2745+28−2841.8%+53.834.1%440
77.3%
 Scorpio 2.0 32-bit 4CPU2731+24−2433.4%+115.136.7%607
62.3%
72Nebula 2.0 64-bit 4CPU2726+20−2045.1%+35.634.1%866
66.5%
 Scorpio 2.1 64-bit 4CPU2718+27−2734.4%+109.531.6%490
80.3%
 Igel 1.4.1 64-bit 4CPU2701+28−2850.7%−6.726.3%448
76.8%
73Hamsters 0.7.1 4CPU2685+32−3252.4%−13.936.2%318
54.1%
74RedQueen 1.1.98 64-bit 4CPU2683+27−2739.4%+80.828.5%494
65.5%
75ECE X3 64-bit 4CPU2676+23−2341.5%+68.823.4%709
57.2%
76Pharaon 3.5.1 4CPU2673+26−2643.6%+41.629.7%518
62.0%
77Jellyfish 1.1 64-bit 4CPU2667+29−2953.3%−25.132.3%403
60.3%
 RedQueen 1.1.97 64-bit 4CPU2662+22−2245.7%+27.133.3%726
71.6%
78Ghost 3.1 64-bit 4CPU2652+30−3053.9%−26.228.5%393
53.4%
79Arminius 2015-08-06 64-bit 4CPU2650+33−3344.2%+38.036.1%302
53.3%
 Gaviota 0.83 64-bit 4CPU2648+25−2547.3%+20.527.9%566
99.6%
 Fridolin 2.00 64-bit 4CPU2589+34−3441.9%+56.731.3%297
93.1%
80‑81Delphil 3.2 64-bit 4CPU2554+31−3138.2%+86.030.5%374
51.5%
80‑81Jazz 840 64-bit 4CPU2554+19−1957.8%−64.325.3%1000
91.3%
82Nemeton 1.8 4CPU2530+27−2749.9%+2.027.2%496
86.5%
83Jumbo 0.6.66 64-bit 4CPU2509+28−2850.0%−0.733.0%433
88.1%
84Myrddin 0.87 64-bit 4CPU2483+35−3538.9%+80.928.4%296
85.9%
 Invictus r228 64-bit 4CPU2341+242−29528.6%+166.70.0%7
 

Results matrix

Free 4-CPU engines (best versions only), top 12
#NameElo1
Stock
2
Ether
3
Komod
4
Xipho
5
Fire
6
RofCh
7
SlowC
8
Booot
9
Laser
10
RubiC
11
Defen
12
Fizbo
1Stockfish 2019-10-09 64-bit 4CPU3496   23 − 7
+16−0=14
+8		25 − 7
+18−0=14
+5		 12.5 − 1.5
+11−0=3
+131		 24.5 − 5.5
+19−0=11
+4		 27.5 − 4.5
+23−0=9
+51		 
2Ethereal 12.00 64-bit 4CPU3354   16 − 16
+3−3=26
−14		16.5 − 15.5
+5−4=23
−23		17.5 − 14.5
+5−2=25
−11		10.5 − 5.5
+6−1=9
+48		20.5 − 11.5
+10−1=21
+23		16.5 − 13.5
+6−3=21
−42		 20 − 12
+8−0=24
−6		 
3Komodo 10 64-bit 4CPU3347            
4Xiphos 0.6 64-bit 4CPU33387 − 23
+0−16=14
−8		16 − 16
+3−3=26
+14		  16 − 16
+4−4=24
−14		16 − 16
+4−4=24
−20		8.5 − 5.5
+4−1=9
+31		19.5 − 12.5
+7−0=25
+16		17.5 − 14.5
+7−4=21
−26		17 − 15
+6−4=22
−34		20.5 − 11.5
+9−0=23
+19		19.5 − 12.5
+10−3=19
−1
5Fire 7.1 64-bit 4CPU33227 − 25
+0−18=14
−5		15.5 − 16.5
+4−5=23
+23		 16 − 16
+4−4=24
+14		 17.5 − 14.5
+4−1=27
+19		10 − 6
+5−1=10
+62		19 − 13
+8−2=22
+28		19 − 13
+7−1=24
+13		 18 − 14
+5−1=26
−8		25.5 − 20.5
+11−6=29
−17
6RofChade 2.3 64-bit 4CPU3319 14.5 − 17.5
+2−5=25
+11		 16 − 16
+4−4=24
+20		14.5 − 17.5
+1−4=27
−19		 8 − 6
+3−1=10
+30		17 − 15
+6−4=22
−4		19 − 13
+7−1=24
+15		18 − 14
+6−2=24
0		15.5 − 16.5
+5−6=21
−47		 
7SlowChess Blitz Classic 2.2 64-bit 4CPU33131.5 − 12.5
+0−11=3
−131		5.5 − 10.5
+1−6=9
−48		 5.5 − 8.5
+1−4=9
−31		6 − 10
+1−5=10
−62		6 − 8
+1−3=10
−30		 7 − 9
+0−2=14
−45		9 − 7
+4−2=10
+7		8 − 6
+4−2=8
+12		9.5 − 6.5
+5−2=9
+24		 
8Booot 6.4 64-bit 4CPU3299 11.5 − 20.5
+1−10=21
−23		 12.5 − 19.5
+0−7=25
−16		13 − 19
+2−8=22
−28		15 − 17
+4−6=22
+4		9 − 7
+2−0=14
+45		 15 − 17
+4−6=22
−31		15 − 17
+1−3=28
−27		16.5 − 15.5
+4−3=25
−9		 
9Laser 1.7 64-bit 4CPU32865.5 − 24.5
+0−19=11
−4		13.5 − 16.5
+3−6=21
+42		 14.5 − 17.5
+4−7=21
+26		13 − 19
+1−7=24
−13		13 − 19
+1−7=24
−15		7 − 9
+2−4=10
−7		17 − 15
+6−4=22
+31		 16 − 16
+5−5=22
−1		16 − 16
+6−6=20
−4		16 − 14
+6−4=20
+5
10RubiChess 1.7.3 64-bit 4CPU3286   15 − 17
+4−6=22
+34		 14 − 18
+2−6=24
0		6 − 8
+2−4=8
−12		17 − 15
+3−1=28
+27		16 − 16
+5−5=22
+1		 18 − 14
+5−1=26
+28		17.5 − 14.5
+7−4=21
+13
11Defenchess 2.2 64-bit 4CPU32824.5 − 27.5
+0−23=9
−51		12 − 20
+0−8=24
+6		 11.5 − 20.5
+0−9=23
−19		14 − 18
+1−5=26
+8		16.5 − 15.5
+6−5=21
+47		6.5 − 9.5
+2−5=9
−24		15.5 − 16.5
+3−4=25
+9		16 − 16
+6−6=20
+4		14 − 18
+1−5=26
−28		 19 − 13
+8−2=22
+42
12Fizbo 2 64-bit 4CPU3274   12.5 − 19.5
+3−10=19
+1		20.5 − 25.5
+6−11=29
+17		   14 − 16
+4−6=20
−5		14.5 − 17.5
+4−7=21
−13		13 − 19
+2−8=22
−42		 
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
Sto
2
Eth
3
Kom
4
Xip
5
Fir
6
Rof
7
Slo
8
Boo
9
Las
10
Rub
11
Def
12
Fiz
1Stockfish 2019-10-09 64-bit 4CPU3496 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Ethereal 12.00 64-bit 4CPU33540.0 66.085.399.298.698.0100.0100.0100.0100.0100.0
3Komodo 10 64-bit 4CPU33470.034.0 70.096.694.794.799.8100.0100.0100.0100.0
4Xiphos 0.6 64-bit 4CPU33380.014.730.0 92.790.891.199.7100.0100.0100.0100.0
5Fire 7.1 64-bit 4CPU33220.00.83.47.3 58.769.496.8100.099.5100.0100.0
6RofChade 2.3 64-bit 4CPU33190.01.45.39.241.3 62.291.199.397.799.6100.0
7SlowChess Blitz Classic 2.2 64-bit 4CPU33130.02.05.38.930.637.8 77.493.690.695.498.6
8Booot 6.4 64-bit 4CPU32990.00.00.20.33.28.922.6 83.177.388.197.0
9Laser 1.7 64-bit 4CPU32860.00.00.00.00.00.76.416.9 48.361.988.1
10RubiChess 1.7.3 64-bit 4CPU32860.00.00.00.00.52.39.422.751.7 60.881.2
11Defenchess 2.2 64-bit 4CPU32820.00.00.00.00.00.44.611.938.139.2 78.1
12Fizbo 2 64-bit 4CPU32740.00.00.00.00.00.01.43.011.918.821.9 
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 July 11, 2020