CCRL 40/15
Downloads and Statistics
October 24, 2020
Testing summary:
Total: 1'185'135 games
played by 2'728 programs

White wins: 408'196 (34.4%)
Black wins: 301'376 (25.4%)
Draws: 475'563 (40.1%)
White score: 54.5%

Free 4-CPU engines

Comparing 323 engines!
84 best versions of selected engines played 10124 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 October 24, 2020 with Bayeselo based on 1'185'135 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 12 64-bit 4CPU3520+29−2876.4%−173.246.2%424 
92.0%
 Stockfish 2019-10-09 64-bit 4CPU3494+23−2374.7%−156.350.3%616
78.3%
 Stockfish 11 64-bit 4CPU3482+20−1973.0%−143.152.6%840
65.8%
 SugaR NN 1.1 64-bit 4CPU3476+17−1772.3%−142.950.7%1166
84.6%
 Stockfish 10 64-bit 4CPU3464+17−1673.4%−155.050.3%1227
55.1%
 SugaR 1.6.1 64-bit 4CPU3463+25−2569.0%−118.757.4%479
68.1%
 Stockfish 270918 64-bit 4CPU3454+28−2777.9%−189.443.3%457
67.7%
 ShashChess 8.0 64-bit 4CPU3446+16−1666.1%−96.763.1%1154
80.0%
 SugaR XPrO 1.5.3 64-bit 4CPU3433+24−2471.8%−143.851.3%544
55.1%
 Stockfish 9 64-bit 4CPU3431+15−1572.3%−152.850.5%1423
95.5%
 SugaR XPrO 1.4 64-bit 4CPU3411+20−2072.3%−150.651.8%840
55.5%
 asmFish 051117 64-bit 4CPU3409+20−1969.8%−130.555.7%819
75.3%
 SugaR XPrO 1.2 64-bit 4CPU3399+21−2070.4%−136.152.5%754
63.4%
 ShashChess Pro 1.0 64-bit 4CPU3392+33−3365.6%−94.061.7%256
77.1%
 Stockfish 8 64-bit 4CPU3378+13−1365.1%−96.362.1%1647
64.8%
 SugaR XPrO 1.3 64-bit 4CPU3373+23−2266.0%−102.957.4%598
62.1%
2Ethereal 12.25 64-bit 4CPU3368+22−2249.6%+3.371.0%524
82.6%
 Ethereal 12.00 64-bit 4CPU3353+22−2250.9%−3.368.8%564
63.0%
 Ethereal 11.75 64-bit 4CPU3348+21−2147.3%+14.865.0%614
53.5%
3Komodo 10 64-bit 4CPU3346+23−2276.6%−172.444.0%700
56.3%
4SlowChess Blitz 2.3 64-bit 4CPU3343+29−2947.4%+17.469.9%306
60.6%
5Xiphos 0.6 64-bit 4CPU3339+17−1745.9%+25.566.1%974
72.9%
 SlowChess Blitz Classic 2.2 64-bit 4CPU3331+20−2043.9%+36.065.9%696
63.1%
 Ethereal 11.53 64-bit 4CPU3326+23−2252.3%−13.264.0%542
49.3%
 Stockfish 7 64-bit 4CPU3326+15−1567.0%−105.857.3%1304
62.8%
6Fire 7.1 64-bit 4CPU3323+12−1251.8%−11.862.3%2185
60.1%
7RofChade 2.3 64-bit 4CPU3320+19−1943.4%+38.368.4%716
71.2%
 Xiphos 0.5 64-bit 4CPU3312+20−2046.1%+24.966.7%673
60.2%
 Komodo 9 64-bit 4CPU3308+20−2070.4%−124.252.7%804
69.0%
 Ethereal 11.25 64-bit 4CPU3300+21−2146.3%+23.965.5%588
53.1%
 Ethereal 11.00 64-bit 4CPU3299+19−1947.0%+17.863.2%778
54.9%
8‑9Booot 6.4 64-bit 4CPU3297+19−1940.2%+58.964.6%748
49.5%
8‑9RubiChess 1.8 64-bit 4CPU3297+23−2334.9%+89.864.0%522
65.0%
 RubiChess 1.7.3 64-bit 4CPU3291+20−2048.3%+10.462.4%736
51.1%
 Stockfish 6 64-bit 4CPU3291+14−1465.3%−94.357.3%1542
53.7%
10Laser 1.7 64-bit 4CPU3290+14−1443.3%+41.563.2%1409
59.1%
 Fire 6.1 64-bit 4CPU3287+18−1848.5%+7.958.4%940
57.6%
 Komodo 8 64-bit 4CPU3285+16−1669.8%−126.749.0%1298
60.7%
 RofChade 2.202 64-bit 4CPU3281+18−1841.4%+53.559.8%858
57.3%
11Defenchess 2.2 64-bit 4CPU3279+16−1640.9%+58.159.5%1088
52.7%
 SlowChess Blitz Classic 2.1 64-bit 4CPU3278+22−2242.1%+51.054.4%599
58.2%
 Ethereal 10.55 64-bit 4CPU3274+25−2449.8%−1.557.4%488
51.1%
12Fizbo 2 64-bit 4CPU3274+12−1243.6%+39.755.0%2079
68.5%
 Stockfish 5 64-bit 4CPU3269+15−1567.7%−109.354.0%1346
57.5%
13Schooner 2.2 64-bit 4CPU3266+26−2645.6%+27.960.7%420
52.5%
 Fire 5 64-bit 4CPU3265+18−1846.9%+18.062.5%867
54.2%
14Andscacs 0.95 64-bit 4CPU3264+17−1842.3%+47.159.3%943
52.9%
 Andscacs 0.94 64-bit 4CPU3263+18−1847.2%+17.754.2%907
51.7%
 Booot 6.3.1 64-bit 4CPU3262+15−1543.0%+44.357.4%1366
73.7%
 Fizbo 1.9 64-bit 4CPU3255+17−1745.7%+25.955.5%1004
61.6%
 Xiphos 0.4 64-bit 4CPU3251+19−1943.8%+39.061.1%830
54.4%
 RofChade 2.1 64-bit 4CPU3249+25−2544.4%+36.760.0%452
72.4%
 Andscacs 0.921 64-bit 4CPU3240+16−1650.7%−6.947.5%1225
52.0%
 Andscacs 0.93 64-bit 4CPU3239+18−1842.9%+45.354.8%938
65.9%
 Stockfish DD 64-bit 4CPU3234+17−1763.0%−78.656.1%1032
63.4%
 Andscacs 0.91 64-bit 4CPU3229+22−2242.5%+47.459.2%596
52.8%
 Komodo 7a 64-bit 4CPU3228+18−1860.7%−65.359.0%897
48.4%
 RubiChess 1.6 64-bit 4CPU3228+25−2559.5%−58.250.9%466
64.0%
 Andscacs 0.89 64-bit 4CPU3222+21−2145.9%+28.755.0%662
59.1%
15Arasan 21.4 64-bit 4CPU3218+25−2545.0%+26.455.6%464
51.3%
 Komodo TCEC 64-bit 4CPU3218+18−1760.8%−68.754.9%955
53.1%
 Booot 6.2 64-bit 4CPU3217+14−1442.9%+46.159.3%1517
49.9%
 Laser 1.6 64-bit 4CPU3217+16−1643.5%+43.655.2%1124
56.7%
 Schooner 2.1 64-bit 4CPU3214+23−2344.6%+34.155.5%550
53.6%
 Andscacs 0.88 64-bit 4CPU3213+28−2845.0%+30.854.8%387
54.8%
 Komodo 6 64-bit 4CPU3211+17−1758.6%−52.956.7%1065
61.2%
 Andscacs 0.90 64-bit 4CPU3206+24−2450.3%+2.855.1%515
51.4%
 Stockfish 4 64-bit 4CPU3206+16−1660.1%−60.359.1%1086
62.3%
 Komodo 5.1 64-bit 4CPU3202+20−2060.9%−67.155.2%747
54.7%
 Schooner 2.0.34 64-bit 4CPU3200+20−2049.3%+3.657.9%734
51.5%
 Andscacs 0.872 64-bit 4CPU3199+24−2451.3%−4.558.8%476
53.8%
 Fire 4 64-bit 4CPU3198+13−1346.5%+22.259.7%1885
53.8%
 Arasan 21.3 64-bit 4CPU3196+30−3046.7%+26.555.7%314
65.3%
 Ethereal 10.00 64-bit 4CPU3189+20−2053.4%−23.050.8%788
60.9%
16Vajolet2 2.7 64-bit 4CPU3185+25−2552.3%−14.655.8%459
54.9%
17Houdini 1.5a 64-bit 4CPU3183+17−1760.4%−69.645.2%1053
52.1%
 SlowChess Blitz Classic 1.9 64-bit 4CPU3182+27−2753.3%−19.458.0%383
53.0%
18Gull 3 64-bit 4CPU3181+9−942.5%+47.854.2%3783
53.0%
 Fizbo 1.8 64-bit 4CPU3180+20−2143.9%+41.249.3%724
48.8%
19NirvanaChess 2.4 64-bit 4CPU3180+13−1341.7%+55.854.2%1828
56.1%
 Gull 2.8b 64-bit 4CPU3178+19−1949.1%+4.051.8%797
49.7%
 Xiphos 0.3 64-bit 4CPU3178+21−2149.2%+3.854.2%660
57.2%
 RofChade 2.0 64-bit 4CPU3175+21−2149.7%+1.957.7%620
56.7%
20Equinox 3.20 64-bit 4CPU3173+11−1142.2%+51.059.0%2671
54.6%
 Arasan 21.2 64-bit 4CPU3171+30−3052.2%−11.860.6%302
58.4%
 Arasan 21.1 64-bit 4CPU3167+27−2751.2%−7.659.5%383
49.4%
 Booot 6.1 64-bit 4CPU3167+20−2042.0%+49.760.3%726
50.0%
21ChessBrainVB 3.72 4CPU3167+30−3045.0%+30.851.3%320
51.9%
 Stockfish 3 64-bit 4CPU3166+21−2156.0%−35.057.8%663
51.4%
 ChessBrainVB 3.74 4CPU3164+128−13046.9%+18.056.3%16
50.6%
 RubiChess 1.5 64-bit 4CPU3163+29−2952.4%−14.354.3%348
53.4%
 Equinox 3.30 64-bit 4CPU3162+18−1843.9%+38.358.9%896
60.3%
22Critter 1.6a 64-bit 4CPU3159+8−845.3%+31.754.6%5429
68.4%
23Hannibal 1.7 64-bit 4CPU3155+14−1442.3%+47.954.5%1577
60.3%
 NirvanaChess 2.3 64-bit 4CPU3152+18−1841.4%+55.456.8%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%+41.356.7%2427
50.7%
 Critter 1.4 64-bit 4CPU3149+18−1860.0%−61.454.2%907
48.8%
24‑25Nemorino 5.00 64-bit 4CPU3149+18−1848.1%+10.252.3%878
57.6%
 Stockfish 2.2.2 64-bit 4CPU3147+16−1659.2%−56.753.4%1141
52.7%
 Andscacs 0.86 64-bit 4CPU3146+20−2042.8%+46.453.9%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%+7.754.5%723
52.1%
 Gull 2.3 64-bit 4CPU3142+17−1747.4%+14.959.3%982
49.5%
 Stockfish 2.3.1 64-bit 4CPU3142+19−1955.4%−33.152.5%846
53.2%
26Texel 1.07 64-bit 4CPU3141+14−1449.5%+5.449.2%1620
52.8%
27Pedone 1.8 64-bit 4CPU3140+28−2846.7%+18.657.4%350
51.3%
 NirvanaChess 2.2 64-bit 4CPU3139+17−1741.5%+55.757.4%1001
52.5%
28Protector 1.9.0 64-bit 4CPU3139+15−1546.4%+24.553.9%1338
56.6%
29Alfil 15.7 64-bit 4CPU3137+17−1742.9%+48.156.3%1006
52.8%
 Vajolet2 2.6.1 64-bit 4CPU3136+21−2150.8%−4.860.3%605
55.7%
 Andscacs 0.85 64-bit 4CPU3133+25−2543.9%+43.053.1%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%+3.856.3%352
52.2%
 Bouquet 1.5 64-bit 4CPU3132+23−2346.4%+20.263.6%500
49.9%
 Sting SF 6 64-bit 4CPU3132+28−2850.8%−6.961.0%354
50.1%
 Texel 1.06 64-bit 4CPU3132+20−2046.1%+25.053.6%739
50.9%
 Sting SF 4.8.4 64-bit 4CPU3131+29−2953.3%−20.562.4%330
57.4%
 DeepSaros 4.1.6 64-bit 4CPU3128+26−2645.2%+28.357.5%419
49.4%
 Wasp 3.60 64-bit 4CPU3128+34−3446.8%+19.050.8%248
50.9%
 Pedone 1.9 64-bit 4CPU3127+28−2849.4%+1.655.4%354
51.6%
 Stockfish 2.0.1 64-bit 4CPU3127+24−2456.4%−40.948.6%514
56.4%
 ChessBrainVB 3.68 4CPU3124+26−2649.2%+3.751.6%428
49.9%
 Gull 3.1 64-bit 4CPU3124+30−3045.4%+33.145.1%359
49.1%
 Protector 1.8.0 64-bit 4CPU3124+28−2850.4%−1.554.7%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%+9.952.3%400
56.2%
 Arasan 20.4.1 64-bit 4CPU3120+26−2651.7%−10.950.2%452
49.7%
 Fizbo 1.7 64-bit 4CPU3120+27−2756.1%−38.652.2%410
54.7%
 Elektro 1.2 64-bit 4CPU3118+23−2346.1%+27.055.5%546
51.1%
 Sting SF 5 64-bit 4CPU3117+25−2548.1%+13.154.0%465
57.2%
 Stockfish 1.9.1 64-bit 4CPU3114+22−2260.9%−73.146.6%639
53.4%
 IvanHoe 9.46h 64-bit 4CPU3113+14−1453.2%−19.359.5%1542
51.0%
 Stockfish 2.1.1 64-bit 4CPU3113+27−2754.7%−29.348.3%406
53.1%
 RobboLito 0.21Q 64-bit 4CPU3111+22−2250.9%−5.762.7%569
53.5%
 Hannibal 1.5 64-bit 4CPU3110+19−1953.2%−20.557.1%819
53.3%
 Sting SF 3 64-bit 4CPU3109+21−2147.7%+11.558.5%644
50.3%
 Sting SF 9 64-bit 4CPU3109+28−2848.0%+10.547.2%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%−11.448.7%816
51.5%
 Sting SF 2 64-bit 4CPU3108+27−2748.8%+7.958.1%375
49.4%
34‑35Winter 0.7 64-bit 4CPU3108+25−2645.1%+31.447.1%463
52.2%
 Stockfish 1.8 64-bit 4CPU3107+18−1860.8%−73.650.4%918
53.0%
 ChessBrainVB 3.66 4CPU3106+28−2854.2%−27.448.7%378
53.5%
 Andscacs 0.83 64-bit 4CPU3104+29−2946.6%+18.851.2%338
51.5%
 Stockfish 1.7.1 64-bit 4CPU3103+19−1860.4%−68.052.6%882
52.5%
 Xiphos 0.2.2 64-bit 4CPU3102+26−2647.3%+14.153.6%414
52.6%
 Wasp 3.50 64-bit 4CPU3101+19−1950.4%−4.853.6%785
57.9%
 Gull 2.2 64-bit 4CPU3098+25−2544.5%+31.054.8%469
51.9%
 Vajolet2 2.5 64-bit 4CPU3097+24−2451.5%−9.954.0%493
55.3%
36Naum 4.6 64-bit 4CPU3095+14−1448.1%+11.754.3%1544
50.2%
 Nemorino 4.00 64-bit 4CPU3095+22−2250.0%+1.152.9%624
49.4%
 NirvanaChess 2.1c 64-bit 4CPU3095+22−2345.2%+31.347.7%608
51.8%
 Sting SF 4 64-bit 4CPU3094+23−2341.9%+49.548.9%562
62.2%
 Arasan 20.3 64-bit 4CPU3088+32−3252.5%−19.947.4%302
50.3%
 Laser 1.4 64-bit 4CPU3088+19−1949.6%+0.345.7%843
51.7%
 Critter 1.01 64-bit 4CPU3087+27−2746.1%+22.654.8%385
51.5%
 Pedone 1.7 64-bit 4CPU3086+19−1948.2%+11.656.4%801
56.9%
 Texel 1.05 64-bit 4CPU3084+17−1747.3%+18.951.4%1016
55.7%
 Andscacs 0.82 64-bit 4CPU3082+29−2950.6%−3.155.2%330
56.9%
 Critter 0.90 64-bit 4CPU3078+31−3147.6%+13.446.5%316
52.2%
 Andscacs 0.81 64-bit 4CPU3077+31−3148.7%+5.449.3%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
54.1%
37Amoeba 3.1 64-bit 4CPU3073+34−3442.1%+47.849.6%254
49.3%
 Demolito 2019-04-27 64-bit 4CPU3073+66−6650.0%−0.138.9%72
51.9%
 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%+44.150.2%656
51.8%
38Rodent III 0.238 64-bit 4CPU3070+20−2047.2%+14.850.0%742
54.0%
 Rodent III 0.276 64-bit 4CPU3068+29−2949.6%+3.658.2%337
53.2%
 RubiChess 1.3 64-bit 4CPU3067+22−2252.8%−18.444.2%642
54.8%
 Defenchess 1.1f 64-bit 4CPU3065+18−1951.7%−12.045.3%916
49.0%
39Demolito 2018-10-29 64-bit 4CPU3065+30−3048.6%+5.751.9%322
58.7%
40Topple 0.7.5 64-bit 4CPU3061+29−2953.2%−20.245.3%360
50.6%
 Wasp 3.0 64-bit 4CPU3060+25−2551.1%−8.355.0%462
55.8%
 Texel 1.04 64-bit 4CPU3058+20−2143.1%+42.947.8%722
54.7%
 Alfil 15.8 64-bit 4CPU3056+22−2253.9%−24.347.9%631
50.6%
 NirvanaChess 2.0a 64-bit 4CPU3056+30−3044.7%+35.650.1%337
50.5%
 Protector 1.5.0 64-bit 4CPU3055+18−1842.5%+48.147.4%952
55.9%
 Amoeba 3.0 64-bit 4CPU3053+26−2654.8%−32.444.8%466
51.2%
 Pedone 1.6 64-bit 4CPU3052+23−2349.5%+3.457.7%508
54.6%
 Ethereal 9.00 64-bit 4CPU3050+23−2346.8%+19.345.1%570
65.4%
 Arasan 19.2 64-bit 4CPU3042+31−3151.0%−5.954.8%305
51.4%
 Vajolet2 2.2 64-bit 4CPU3042+27−2747.0%+14.848.7%423
48.4%
 Vajolet2 2.4 64-bit 4CPU3042+19−1947.2%+18.745.7%878
60.6%
 Wasp 2.6 64-bit 4CPU3039+18−1848.9%+8.047.2%968
51.3%
 Gull R375 64-bit 4CPU3038+22−2243.4%+37.657.4%605
54.6%
 Stockfish 1.6.3 64-bit 4CPU3037+22−2257.5%−50.245.3%651
57.3%
 Critter 0.80 64-bit 4CPU3033+31−3050.9%−8.648.3%321
50.3%
 Hannibal 1.3 64-bit 4CPU3033+22−2243.0%+42.748.6%642
50.0%
 Pedone 1.5 64-bit 4CPU3033+31−3149.5%+3.351.6%304
53.0%
 Wasp 2.01 64-bit 4CPU3031+30−3055.3%−32.054.5%321
54.8%
 Arasan 20.0 64-bit 4CPU3029+30−3047.4%+16.053.4%328
51.8%
 Vajolet2 2.3 64-bit 4CPU3028+31−3145.2%+25.053.5%303
53.9%
41Bobcat 8.0 64-bit 4CPU3026+21−2148.3%+11.053.5%636
51.3%
42Pirarucu 2.7.4 64-bit 4CPU3025+20−2053.6%−27.047.6%735
52.1%
 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%−1.246.7%317
49.5%
 Senpai 1.0 64-bit 4CPU3023+16−1646.2%+21.353.5%1095
71.7%
43Rybka 2.3.2a 64-bit 4CPU3017+13−1362.8%−86.143.9%1928
54.0%
44Spike 1.4 Leiden 4CPU3016+11−1145.2%+29.447.7%2862
49.6%
 Winter 0.6 64-bit 4CPU3016+32−3253.0%−27.635.6%329
55.2%
45Crafty 25.2 64-bit 4CPU3014+16−1648.5%+9.142.5%1279
51.5%
46chess22k 1.10 64-bit 4CPU3013+22−2246.7%+16.843.7%680
52.7%
 Nemorino 2.00 64-bit 4CPU3012+30−3047.0%+16.459.6%302
50.9%
 Arasan 19.0.1 64-bit 4CPU3011+31−3151.3%−11.540.9%318
54.1%
47Cheng 4.39 64-bit 4CPU3010+15−1549.4%+3.848.6%1333
48.4%
 Laser 1.3 64-bit 4CPU3010+29−3047.2%+15.955.8%321
51.0%
 Texel 1.03 64-bit 4CPU3010+31−3150.3%−1.647.0%313
66.8%
 Pedone 1.4.1 64-bit 4CPU3000+31−3148.5%+8.155.7%305
52.7%
 Vajolet2 2.1 64-bit 4CPU2999+25−2550.9%−4.248.5%462
53.7%
 Rodent III 0.210 64-bit 4CPU2997+28−2845.1%+32.842.5%402
58.2%
 Fizbo 1.5 64-bit 4CPU2993+27−2752.6%−16.648.5%410
68.1%
48Scorpio 2.8 64-bit 4CPU2984+25−2548.8%+6.646.3%492
53.1%
 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%+23.742.4%531
53.7%
 Bobcat 7.6 64-bit 4CPU2978+31−3148.6%+9.241.8%318
59.4%
 Arasan 18.3 64-bit 4CPU2973+30−3046.6%+20.646.8%327
49.7%
 Rybka 2.2 64-bit 4CPU2973+19−1962.8%−87.141.2%879
55.9%
49EXchess 7.97b 64-bit 4CPU2971+18−1747.4%+18.745.9%1017
51.7%
 Arasan 18.2 64-bit 4CPU2970+28−2851.9%−14.350.3%388
54.0%
50Spark 1.0 64-bit 4CPU2969+13−1345.0%+32.046.6%1787
50.7%
 Stockfish 1.5.1 64-bit 4CPU2969+25−2553.7%−23.747.7%495
62.2%
 Demolito 2017-08-26 64-bit 4CPU2963+21−2140.2%+63.940.8%748
50.3%
 Winter 0.5 64-bit 4CPU2963+26−2650.4%−5.138.3%470
53.5%
 Protector 1.3.6 64-bit 4CPU2961+32−3246.6%+18.944.3%307
57.9%
 EXchess 7.88b 64-bit 4CPU2957+29−2945.4%+29.548.6%356
48.9%
51Toga II 4.0 64-bit 4CPU2957+18−1941.4%+57.440.4%958
55.1%
 Fizbo 1.31 64-bit 4CPU2955+30−2951.1%−6.541.9%358
61.4%
 Crafty 25.0 64-bit 4CPU2949+25−2548.1%+13.147.9%468
55.7%
 Stockfish 1.4 64-bit 4CPU2947+17−1754.2%−28.942.2%1131
53.8%
 Scorpio 2.7.9 64-bit 4CPU2946+22−2246.7%+20.540.5%659
60.2%
52Gaviota 1.0 64-bit 4CPU2942+16−1647.3%+16.345.4%1256
52.7%
53Tucano 7.07 64-bit 4CPU2941+33−3351.5%−10.144.7%291
51.7%
 EXchess 7.51b 64-bit 4CPU2940+32−3249.5%+4.745.6%296
51.4%
54The Baron 3.44 64-bit 4CPU2939+28−2846.8%+20.745.3%402
56.5%
55Marvin 3.3.2 64-bit 4CPU2935+36−3743.4%+40.344.7%228
51.3%
 Arasan 17.5 64-bit 4CPU2934+27−2748.4%+10.545.1%406
55.0%
 EXchess 7.71b 64-bit 4CPU2932+28−2853.3%−23.043.2%403
50.5%
 Fizbo 1.4 64-bit 4CPU2932+28−2845.9%+24.744.7%394
49.4%
 Spark 0.4 64-bit 4CPU2932+21−2143.0%+48.545.2%703
52.0%
 Bobcat 7.1 64-bit 4CPU2931+31−3147.5%+16.045.9%314
50.2%
 Ethereal 8.62 64-bit 4CPU2931+22−2244.2%+35.549.7%600
59.8%
 Spark 0.3 64-bit 4CPU2927+23−2346.5%+20.249.7%572
51.7%
 Arasan 18.0 64-bit 4CPU2926+29−2947.2%+15.641.5%378
50.4%
56Thinker 5.4d Inert 64-bit 4CPU2926+22−2346.0%+23.849.7%587
58.6%
 Thinker 5.4c Inert 64-bit 4CPU2923+15−1548.1%+12.539.4%1502
52.4%
 Marvin 3.2.0 64-bit 4CPU2922+21−2153.7%−26.543.0%698
58.4%
 Toga II 3.0 4CPU2918+22−2345.6%+27.549.0%592
59.7%
57DisasterArea 1.65 64-bit 4CPU2915+21−2144.2%+35.646.1%709
55.8%
58Gogobello 2.0 64-bit 4CPU2912+25−2550.8%−6.839.1%522
56.6%
 Crafty 23.8 64-bit 4CPU2909+32−3245.8%+26.747.0%287
59.2%
 Thinker 5.4a Inert 64-bit 4CPU2904+23−2447.3%+19.545.4%560
52.6%
 The Baron 3.41 64-bit 4CPU2903+20−2039.1%+70.643.8%800
47.6%
 Toga II 1.4.1SE 4CPU2903+13−1348.5%+11.241.6%2041
50.8%
 Asymptote 0.6 64-bit 4CPU2902+95−9548.3%+3.756.7%30
55.4%
59‑60Bright 0.4a 4CPU2896+15−1547.4%+16.541.1%1495
48.5%
 Cheng4 0.36c 64-bit 4CPU2896+30−3048.8%+6.546.6%326
51.5%
59‑60Tornado 6.0 64-bit 4CPU2896+26−2645.5%+27.043.3%469
51.5%
61Glaurung 2.2 64-bit 4CPU2895+16−1647.0%+19.040.7%1259
50.0%
 Tornado 8.0 64-bit 4CPU2895+19−1945.2%+30.639.0%881
54.4%
 Tornado 7.0 64-bit 4CPU2893+25−2545.3%+31.039.2%502
56.6%
 Bright 0.5c 4CPU2890+23−2347.2%+19.542.9%616
56.6%
62Octochess r5506 64-bit 4CPU2888+21−2144.5%+35.646.7%715
56.3%
63MinkoChess 1.3 64-bit 4CPU2885+21−2146.0%+24.843.7%725
50.7%
 Tornado 4.88 64-bit 4CPU2885+26−2646.0%+24.541.5%479
51.6%
 Toga II 1.4 beta5c 4CPU2884+18−1851.7%−11.645.8%996
60.4%
 Fruit Reloaded 3.2.1 64-bit 4CPU2881+18−1838.8%+74.439.1%1024
49.5%
 Pedone 1.3 64-bit 4CPU2881+29−2946.6%+20.151.0%355
56.4%
 Crafty 24.1 64-bit 4CPU2878+31−3243.5%+41.039.1%322
57.0%
 Scorpio 2.7.6 64-bit 4CPU2874+26−2647.4%+16.644.0%445
65.0%
 Glaurung 2.1 64-bit 4CPU2868+19−1942.8%+50.241.3%946
53.2%
 Bobcat 6.4b 64-bit 4CPU2866+27−2748.3%+11.746.5%415
52.2%
 The Baron 3.29 64-bit 4CPU2865+25−2546.3%+22.743.1%489
51.5%
 EXchess 7.18b 64-bit 4CPU2864+33−3347.3%+17.038.4%292
57.9%
 Scorpio 2.7.5 64-bit 4CPU2860+33−3345.7%+24.350.0%266
51.3%
 Gaviota 0.86 64-bit 4CPU2859+24−2453.4%−26.532.6%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%+4.740.2%276
53.6%
 Scorpio 2.7.7 64-bit 4CPU2855+32−3242.9%+45.041.3%310
51.4%
64Monolith 1.0 64-bit 4CPU2854+21−2248.6%+8.743.0%693
53.6%
65Counter 3.2 64-bit 4CPU2853+32−3250.7%−5.140.2%301
56.9%
 Igel 1.9.0 64-bit 4CPU2849+31−3241.0%+59.039.5%324
60.6%
66‑67Cheese 2.0 64-bit 4CPU2843+30−3045.8%+25.839.2%355
49.2%
66‑67Shield 2.1 64-bit 4CPU2843+24−2448.7%+9.836.0%594
63.2%
68BugChess2 1.9 64-bit 4CPU2838+21−2143.4%+43.938.2%738
52.2%
 Crafty 23.3 64-bit 4CPU2837+31−3241.5%+54.738.2%325
48.7%
69Loop 13.6 (Loop 2007) 64-bit 4CPU2837+19−1948.3%+12.342.8%894
72.2%
 Bright 0.3a 4CPU2829+18−1842.4%+51.241.8%988
52.9%
 Glaurung 2.0.1 64-bit 4CPU2828+17−1743.8%+38.943.5%1100
64.7%
 Octochess r5190 64-bit 4CPU2822+24−2445.9%+24.544.5%555
57.6%
 Pedone 1.1 64-bit 4CPU2819+31−3153.7%−32.139.5%347
51.3%
 Arminius 2018-12-23 64-bit 4CPU2818+44−4444.2%+40.736.4%165
53.8%
70Jonny 4.00 4CPU2815+25−2543.6%+42.535.0%540
71.8%
 Bright 0.2c 4CPU2805+21−2143.9%+40.443.2%724
58.8%
 Pedone 1.2 64-bit 4CPU2800+36−3648.4%+9.642.3%246
64.3%
 Crafty 23.1 64-bit 4CPU2791+36−3743.8%+42.536.9%241
53.2%
 Laser 1.0 64-bit 4CPU2789+37−3836.3%+89.339.2%227
58.5%
 Bagatur 1.7a 64-bit 4CPU2774+131−13445.0%+30.820.0%20
55.1%
 Glaurung 1.2.1 64-bit 4CPU2765+19−1940.2%+64.138.1%967
68.9%
 Crafty 23.0 64-bit 4CPU2758+18−1839.0%+77.934.1%1042
68.5%
71Fridolin 3.10 64-bit 4CPU2748+33−3349.5%+0.331.5%308
55.6%
 Alfil 13.1 64-bit 4CPU2745+28−2841.8%+53.534.1%440
77.2%
 Scorpio 2.0 32-bit 4CPU2731+24−2433.4%+114.936.7%607
62.4%
72Nebula 2.0 64-bit 4CPU2726+20−2045.1%+35.434.1%866
66.4%
 Scorpio 2.1 64-bit 4CPU2718+27−2734.4%+109.431.6%490
80.3%
 Igel 1.4.1 64-bit 4CPU2701+28−2850.7%−6.926.3%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%+80.528.5%494
65.4%
75ECE X3 64-bit 4CPU2676+23−2341.5%+68.523.4%709
57.1%
76Pharaon 3.5.1 4CPU2673+26−2643.6%+41.529.7%518
62.0%
77Jellyfish 1.1 64-bit 4CPU2667+29−2953.3%−25.332.3%403
60.3%
 RedQueen 1.1.97 64-bit 4CPU2662+22−2245.7%+26.933.3%726
71.5%
78Ghost 3.1 64-bit 4CPU2651+30−3053.9%−25.328.5%393
53.4%
79Arminius 2015-08-06 64-bit 4CPU2650+33−3344.2%+37.636.1%302
53.3%
 Gaviota 0.83 64-bit 4CPU2648+25−2547.3%+20.327.9%566
99.6%
 Fridolin 2.00 64-bit 4CPU2588+34−3441.9%+57.531.3%297
93.1%
80‑81Delphil 3.2 64-bit 4CPU2554+31−3138.2%+85.830.5%374
51.3%
80‑81Jazz 840 64-bit 4CPU2554+20−2057.8%−64.225.3%1000
91.3%
82Nemeton 1.8 4CPU2530+27−2749.9%+1.827.2%496
86.5%
83Jumbo 0.6.66 64-bit 4CPU2509+28−2850.0%−1.033.0%433
88.1%
84Myrddin 0.87 64-bit 4CPU2483+35−3538.9%+80.928.4%296
86.0%
 Invictus r228 64-bit 4CPU2340+242−29528.6%+167.30.0%7
 

Results matrix

Free 4-CPU engines (best versions only), top 12
#NameElo123456789101112
1Stockfish 12 64-bit 4CPU3520 17.5 − 8.5
+10−1=15
−53
 15 − 3
+12−0=6
+56
18.5 − 5.5
+13−0=11
−10
21.5 − 4.5
+17−0=9
+29
21.5 − 4.5
+17−0=9
+26
20.5 − 5.5
+15−0=11
−35
20.5 − 3.5
+17−0=7
+35
20 − 6
+14−0=12
−62
23 − 3
+20−0=6
+61
 
2Ethereal 12.25 64-bit 4CPU33688.5 − 17.5
+1−10=15
+53
  8.5 − 9.5
+0−1=17
−38
18.5 − 13.5
+6−1=25
+11
18.5 − 13.5
+7−2=23
−4
18.5 − 13.5
+7−2=23
−7
22 − 10
+14−2=16
+41
19.5 − 12.5
+8−1=23
−14
19.5 − 12.5
+8−1=23
−21
  
3Komodo 10 64-bit 4CPU3346            
4SlowChess Blitz 2.3 64-bit 4CPU33433 − 15
+0−12=6
−56
9.5 − 8.5
+1−0=17
+38
  10.5 − 7.5
+3−0=15
+37
10 − 8
+4−2=12
+7
9 − 9
+2−2=14
−23
10.5 − 7.5
+5−2=11
0
9.5 − 8.5
+2−1=15
−35
10 − 8
+3−1=14
−23
11.5 − 6.5
+6−1=11
+11
 
5Xiphos 0.6 64-bit 4CPU33395.5 − 18.5
+0−13=11
+10
13.5 − 18.5
+1−6=25
−11
 7.5 − 10.5
+0−3=15
−37
 16 − 16
+4−4=24
−14
16 − 16
+4−4=24
−20
19.5 − 12.5
+7−0=25
+13
18.5 − 13.5
+6−1=25
−2
17.5 − 14.5
+7−4=21
−23
20.5 − 11.5
+9−0=23
+15
19.5 − 12.5
+10−3=19
−2
6Fire 7.1 64-bit 4CPU33234.5 − 21.5
+0−17=9
−29
13.5 − 18.5
+2−7=23
+4
 8 − 10
+2−4=12
−7
16 − 16
+4−4=24
+14
 17.5 − 14.5
+4−1=27
+19
19 − 13
+8−2=22
+25
21 − 11
+10−0=22
+58
19 − 13
+7−1=24
+16
18 − 14
+5−1=26
−12
25.5 − 20.5
+11−6=29
−18
7RofChade 2.3 64-bit 4CPU33204.5 − 21.5
+0−17=9
−26
13.5 − 18.5
+2−7=23
+7
 9 − 9
+2−2=14
+23
16 − 16
+4−4=24
+20
14.5 − 17.5
+1−4=27
−19
 17 − 15
+6−4=22
−7
18.5 − 13.5
+7−2=23
+17
19 − 13
+7−1=24
+18
15.5 − 16.5
+5−6=21
−51
 
8Booot 6.4 64-bit 4CPU32975.5 − 20.5
+0−15=11
+35
10 − 22
+2−14=16
−41
 7.5 − 10.5
+2−5=11
0
12.5 − 19.5
+0−7=25
−13
13 − 19
+2−8=22
−25
15 − 17
+4−6=22
+7
 14.5 − 17.5
+4−7=21
−28
15 − 17
+4−6=22
−25
16.5 − 15.5
+4−3=25
−10
 
9RubiChess 1.8 64-bit 4CPU32973.5 − 20.5
+0−17=7
−35
12.5 − 19.5
+1−8=23
+14
 8.5 − 9.5
+1−2=15
+35
13.5 − 18.5
+1−6=25
+2
11 − 21
+0−10=22
−58
13.5 − 18.5
+2−7=23
−17
17.5 − 14.5
+7−4=21
+28
 15 − 17
+2−4=26
−22
  
10Laser 1.7 64-bit 4CPU32906 − 20
+0−14=12
+62
12.5 − 19.5
+1−8=23
+21
 8 − 10
+1−3=14
+23
14.5 − 17.5
+4−7=21
+23
13 − 19
+1−7=24
−16
13 − 19
+1−7=24
−18
17 − 15
+6−4=22
+25
17 − 15
+4−2=26
+22
 16 − 16
+6−6=20
−11
16 − 14
+6−4=20
+1
11Defenchess 2.2 64-bit 4CPU32793 − 23
+0−20=6
−61
  6.5 − 11.5
+1−6=11
−11
11.5 − 20.5
+0−9=23
−15
14 − 18
+1−5=26
+12
16.5 − 15.5
+6−5=21
+51
15.5 − 16.5
+3−4=25
+10
 16 − 16
+6−6=20
+11
 19 − 13
+8−2=22
+45
12Fizbo 2 64-bit 4CPU3274    12.5 − 19.5
+3−10=19
+2
20.5 − 25.5
+6−11=29
+18
   14 − 16
+4−6=20
−1
13 − 19
+2−8=22
−45
 
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
#NameElo123456789101112
1Stockfish 12 64-bit 4CPU3520 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Ethereal 12.25 64-bit 4CPU33680.0 89.591.098.2100.0100.0100.0100.0100.0100.0100.0
3Komodo 10 64-bit 4CPU33460.010.5 56.369.296.295.399.999.8100.0100.0100.0
4SlowChess Blitz 2.3 64-bit 4CPU33430.09.043.7 60.690.391.399.699.499.9100.0100.0
5Xiphos 0.6 64-bit 4CPU33390.01.830.839.4 94.393.5100.099.8100.0100.0100.0
6Fire 7.1 64-bit 4CPU33230.00.03.89.75.7 60.198.797.2100.0100.0100.0
7RofChade 2.3 64-bit 4CPU33200.00.04.78.76.539.9 95.493.499.399.9100.0
8Booot 6.4 64-bit 4CPU32970.00.00.10.40.01.34.6 49.572.692.697.3
9RubiChess 1.8 64-bit 4CPU32970.00.00.20.60.22.86.650.5 70.689.795.4
10Laser 1.7 64-bit 4CPU32900.00.00.00.10.00.00.727.429.4 84.695.2
11Defenchess 2.2 64-bit 4CPU32790.00.00.00.00.00.00.17.410.315.4 68.1
12Fizbo 2 64-bit 4CPU32740.00.00.00.00.00.00.02.74.64.831.9 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

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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

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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
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Reference rating list:
Recalibrate:
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Created in 2005-2013 by CCRL team
Last games added on October 24, 2020