CCRL 40/40
Downloads and Statistics
December 10, 2019
Testing summary:
Total: 1'104'091 games
played by 2'573 programs
150964 CPU days (X2 4600+)

White wins: 382'628 (34.7%)
Black wins: 284'145 (25.7%)
Draws: 437'318 (39.6%)
White score: 54.5%

Free 4-CPU engines

Comparing 304 engines!
81 best versions of selected engines played 10087 games with each other

CCRL 40/40 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 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern CPU.
Computed on December 10, 2019 with Bayeselo based on 1'104'091 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 4CPU3491+40−3973.4%−145.851.2%203 
59.9%
 SugaR NN 1.1 64-bit 4CPU3485+22−2173.8%−158.646.8%724
93.1%
 Stockfish 10 64-bit 4CPU3465+16−1672.0%−146.451.8%1283
55.0%
 SugaR 1.6.1 64-bit 4CPU3463+25−2569.0%−118.157.4%479
68.1%
 Stockfish 270918 64-bit 4CPU3454+28−2777.9%−188.743.3%457
54.9%
 ShashChess 8.0 64-bit 4CPU3452+22−2168.1%−111.160.3%640
86.0%
 SugaR XPrO 1.5.3 64-bit 4CPU3434+24−2471.8%−144.151.3%544
55.0%
 Stockfish 9 64-bit 4CPU3432+15−1572.3%−153.150.5%1423
95.5%
 SugaR XPrO 1.4 64-bit 4CPU3411+20−2072.3%−150.051.8%840
55.6%
 asmFish 051117 64-bit 4CPU3409+20−1969.8%−129.855.7%819
75.5%
 SugaR XPrO 1.2 64-bit 4CPU3400+21−2070.4%−136.652.5%754
62.9%
 ShashChess Pro 1.0 64-bit 4CPU3393+33−3365.6%−94.161.7%256
77.6%
 Stockfish 8 64-bit 4CPU3378+13−1365.1%−95.962.1%1647
64.6%
 SugaR XPrO 1.3 64-bit 4CPU3374+23−2266.0%−103.557.4%598
90.2%
2‑3Ethereal 11.75 64-bit 4CPU3349+29−2948.8%+7.966.6%323
48.8%
2‑3Xiphos 0.6 64-bit 4CPU3349+33−3347.1%+18.463.9%244
55.9%
4Komodo 10 64-bit 4CPU3346+23−2276.6%−172.644.0%700
85.4%
 Ethereal 11.53 64-bit 4CPU3328+22−2252.3%−12.364.0%542
56.4%
 Stockfish 7 64-bit 4CPU3326+15−1567.0%−106.057.3%1304
64.4%
5Fire 7.1 64-bit 4CPU3322+13−1353.1%−19.860.5%1701
83.7%
 Xiphos 0.5 64-bit 4CPU3310+19−1943.9%+39.964.2%745
57.1%
 Komodo 9 64-bit 4CPU3308+20−2070.4%−124.152.7%804
70.6%
 Ethereal 11.00 64-bit 4CPU3300+19−1947.0%+18.063.2%778
49.3%
 Ethereal 11.25 64-bit 4CPU3300+21−2146.3%+24.265.5%588
74.4%
 Stockfish 6 64-bit 4CPU3291+14−1465.3%−94.357.3%1542
60.2%
 Fire 6.1 64-bit 4CPU3288+18−1848.5%+7.658.4%940
52.8%
6RofChade 2.202 64-bit 4CPU3287+22−2341.5%+52.861.5%550
55.3%
7Defenchess 2.2 64-bit 4CPU3285+22−2243.2%+44.359.0%590
50.1%
 Komodo 8 64-bit 4CPU3285+16−1669.8%−126.849.0%1298
56.0%
8Laser 1.7 64-bit 4CPU3283+19−1943.8%+39.061.8%804
70.2%
9Fizbo 2 64-bit 4CPU3277+13−1344.9%+30.955.8%1865
54.6%
 Ethereal 10.55 64-bit 4CPU3275+25−2449.8%−1.757.4%488
66.8%
 Stockfish 5 64-bit 4CPU3268+15−1567.9%−110.353.7%1324
57.6%
10Andscacs 0.95 64-bit 4CPU3266+19−1940.5%+58.558.2%806
51.8%
 Fire 5 64-bit 4CPU3265+18−1846.9%+18.362.5%867
54.8%
 Andscacs 0.94 64-bit 4CPU3264+18−1847.2%+17.954.2%907
50.1%
11Booot 6.3.1 64-bit 4CPU3264+15−1543.3%+41.757.5%1282
76.2%
 Fizbo 1.9 64-bit 4CPU3255+17−1745.7%+26.255.5%1004
60.6%
 Xiphos 0.4 64-bit 4CPU3251+19−1943.8%+39.861.1%830
53.8%
 RofChade 2.1 64-bit 4CPU3250+25−2544.4%+37.060.0%452
72.6%
 Andscacs 0.921 64-bit 4CPU3240+16−1650.7%−6.147.5%1225
52.3%
 Andscacs 0.93 64-bit 4CPU3240+18−1842.9%+45.054.8%938
56.3%
12RubiChess 1.6 64-bit 4CPU3237+30−2963.2%−79.750.0%346
56.1%
 Stockfish DD 64-bit 4CPU3234+17−1763.0%−78.256.1%1032
57.6%
13Arasan 21.4 64-bit 4CPU3231+28−2848.9%+2.856.7%356
53.8%
 Andscacs 0.91 64-bit 4CPU3229+22−2242.5%+47.759.2%596
53.8%
 Komodo 7a 64-bit 4CPU3228+18−1860.7%−65.559.0%897
63.7%
 Andscacs 0.89 64-bit 4CPU3223+21−2145.9%+28.055.0%662
58.8%
 Komodo TCEC 64-bit 4CPU3219+18−1861.7%−73.555.1%925
53.3%
 Booot 6.2 64-bit 4CPU3218+14−1442.6%+48.359.2%1492
53.6%
 Andscacs 0.88 64-bit 4CPU3217+28−2944.1%+36.955.5%362
50.5%
 Laser 1.6 64-bit 4CPU3217+17−1742.8%+48.055.9%1099
51.8%
14Schooner 2.1 64-bit 4CPU3216+23−2344.6%+33.855.5%550
63.8%
 Komodo 6 64-bit 4CPU3211+17−1758.6%−52.956.7%1065
60.4%
 Andscacs 0.90 64-bit 4CPU3207+24−2450.3%+2.255.1%515
53.2%
 Stockfish 4 64-bit 4CPU3205+17−1760.9%−63.858.9%1054
62.3%
 Schooner 2.0.34 64-bit 4CPU3201+20−2049.3%+3.757.9%734
53.1%
 Komodo 5.1 64-bit 4CPU3200+20−2061.8%−72.154.8%715
51.3%
 Andscacs 0.872 64-bit 4CPU3199+24−2451.3%−4.658.8%476
53.8%
 Fire 4 64-bit 4CPU3198+13−1346.5%+22.159.7%1885
56.0%
 Arasan 21.3 64-bit 4CPU3195+32−3244.5%+40.156.4%282
61.3%
 Ethereal 10.00 64-bit 4CPU3190+20−2053.4%−23.450.8%788
68.1%
15Houdini 1.5a 64-bit 4CPU3183+18−1862.2%−80.045.0%991
57.3%
16NirvanaChess 2.4 64-bit 4CPU3181+13−1340.8%+61.053.8%1734
53.9%
17Gull 3 64-bit 4CPU3180+9−941.7%+53.354.5%3651
53.6%
 Fizbo 1.8 64-bit 4CPU3179+21−2143.6%+43.149.7%708
50.4%
 Xiphos 0.3 64-bit 4CPU3179+21−2149.2%+3.654.2%660
51.9%
 Gull 2.8b 64-bit 4CPU3178+19−1949.1%+4.051.8%797
50.8%
18Vajolet2 2.7 64-bit 4CPU3178+29−2956.7%−39.255.1%343
54.2%
 RofChade 2.0 64-bit 4CPU3176+21−2149.7%+1.357.7%620
57.2%
19Equinox 3.20 64-bit 4CPU3174+11−1141.5%+54.359.0%2569
51.5%
20ChessBrainVB 3.72 4CPU3173+31−3145.2%+29.251.3%302
52.0%
 Arasan 21.2 64-bit 4CPU3172+30−3052.2%−12.360.6%302
58.0%
 Arasan 21.1 64-bit 4CPU3168+27−2751.2%−7.859.5%383
51.4%
 Booot 6.1 64-bit 4CPU3167+20−2041.6%+52.160.6%708
52.7%
 Stockfish 3 64-bit 4CPU3166+21−2156.0%−35.257.8%663
55.2%
 RubiChess 1.5 64-bit 4CPU3164+29−2952.4%−14.754.3%348
54.9%
 Equinox 3.30 64-bit 4CPU3162+18−1843.9%+38.258.9%896
59.7%
21Critter 1.6a 64-bit 4CPU3159+8−845.3%+31.954.6%5429
70.6%
22Hannibal 1.7 64-bit 4CPU3155+14−1441.9%+49.955.0%1537
58.8%
23Nemorino 5.00 64-bit 4CPU3152+19−1948.9%+5.252.7%856
49.4%
 NirvanaChess 2.3 64-bit 4CPU3152+18−1841.4%+55.556.8%869
56.6%
 Fire 3.0 64-bit 4CPU3150+17−1749.5%+2.658.2%948
53.8%
24Bouquet 1.8 64-bit 4CPU3149+11−1143.6%+41.256.7%2427
59.0%
 Critter 1.4 64-bit 4CPU3147+19−1960.6%−65.053.7%857
48.8%
 Stockfish 2.2.2 64-bit 4CPU3147+16−1659.2%−56.653.4%1141
54.3%
 Critter 1.2 64-bit 4CPU3145+20−2058.9%−54.652.9%762
52.7%
 Andscacs 0.86 64-bit 4CPU3144+20−2141.5%+55.254.9%703
52.1%
 Laser 1.5 64-bit 4CPU3144+20−2049.4%+7.854.5%723
51.1%
25Texel 1.07 64-bit 4CPU3143+14−1449.8%+3.949.3%1604
53.7%
 Gull 2.3 64-bit 4CPU3142+17−1747.4%+15.059.3%982
49.9%
 Stockfish 2.3.1 64-bit 4CPU3142+19−1955.4%−32.952.5%846
60.7%
 NirvanaChess 2.2 64-bit 4CPU3139+17−1840.7%+59.557.5%961
49.4%
26Pedone 1.8 64-bit 4CPU3139+29−2945.9%+23.457.6%328
51.1%
27Protector 1.9.0 64-bit 4CPU3138+15−1546.3%+26.154.1%1313
55.6%
28Alfil 15.7 64-bit 4CPU3137+17−1742.9%+48.056.3%1006
50.6%
 Vajolet2 2.6.1 64-bit 4CPU3137+21−2150.8%−5.060.3%605
57.6%
 Andscacs 0.85 64-bit 4CPU3133+25−2543.9%+42.953.1%467
53.7%
 Bouquet 1.5 64-bit 4CPU3132+23−2346.4%+20.063.6%500
50.3%
 Sting SF 4.8.4 64-bit 4CPU3132+29−2953.3%−21.362.4%330
49.2%
 Sting SF 6 64-bit 4CPU3132+28−2850.8%−6.661.0%354
50.8%
 Texel 1.06 64-bit 4CPU3132+20−2046.1%+24.953.6%739
50.8%
 Wasp 3.60 64-bit 4CPU3131+58−5943.6%+31.264.1%78
52.1%
 Pedone 1.9 64-bit 4CPU3129+39−3947.0%+16.958.4%185
52.6%
 DeepSaros 4.1.6 64-bit 4CPU3128+26−2645.2%+28.157.5%419
51.4%
 Stockfish 2.0.1 64-bit 4CPU3127+24−2456.4%−40.948.6%514
54.5%
 Gull 3.1 64-bit 4CPU3125+30−3045.4%+32.845.1%359
50.5%
 ChessBrainVB 3.68 4CPU3124+26−2649.2%+4.451.6%428
50.0%
 Protector 1.8.0 64-bit 4CPU3124+28−2850.4%−1.454.7%386
54.1%
29BlackMamba 2.0 64-bit 4CPU3123+15−1544.2%+37.454.3%1408
55.9%
 Arasan 20.4.1 64-bit 4CPU3120+26−2651.7%−10.350.2%452
55.4%
 Elektro 1.2 64-bit 4CPU3118+23−2346.1%+27.155.5%546
49.3%
 Fizbo 1.7 64-bit 4CPU3118+27−2756.1%−38.252.5%396
51.8%
 Sting SF 5 64-bit 4CPU3117+25−2548.1%+13.054.0%465
61.5%
 IvanHoe 9.46h 64-bit 4CPU3113+14−1453.2%−19.259.5%1542
49.1%
 Stockfish 1.9.1 64-bit 4CPU3113+23−2361.1%−74.746.8%615
51.1%
 Stockfish 2.1.1 64-bit 4CPU3113+27−2754.7%−29.348.3%406
53.5%
 RobboLito 0.21Q 64-bit 4CPU3111+22−2250.9%−5.762.7%569
50.9%
30Senpai 2.0 64-bit 4CPU3111+20−2051.6%−12.148.6%780
52.5%
 Hannibal 1.5 64-bit 4CPU3110+19−1953.2%−20.557.1%819
50.9%
 Sting SF 9 64-bit 4CPU3110+29−2947.9%+11.646.5%357
52.0%
 Sting SF 3 64-bit 4CPU3109+21−2147.7%+11.458.5%644
51.2%
 Bouquet 1.6 64-bit 4CPU3108+21−2150.0%−0.060.7%641
51.4%
 Sting SF 2 64-bit 4CPU3108+27−2748.8%+7.958.1%375
52.0%
 Stockfish 1.8 64-bit 4CPU3107+19−1962.2%−82.149.3%850
51.8%
 ChessBrainVB 3.66 4CPU3106+28−2854.2%−27.148.7%378
54.2%
 Andscacs 0.83 64-bit 4CPU3104+29−2946.6%+18.751.2%338
51.0%
 Stockfish 1.7.1 64-bit 4CPU3103+19−1960.7%−69.652.8%860
51.5%
 Xiphos 0.2.2 64-bit 4CPU3103+26−2647.3%+13.753.6%414
53.1%
31Wasp 3.50 64-bit 4CPU3101+19−1950.4%−4.253.6%785
59.1%
 Gull 2.2 64-bit 4CPU3098+25−2544.5%+30.854.8%469
50.8%
 Vajolet2 2.5 64-bit 4CPU3097+24−2451.5%−9.454.0%493
56.2%
32Naum 4.6 64-bit 4CPU3095+14−1448.1%+11.754.3%1544
48.5%
 Nemorino 4.00 64-bit 4CPU3095+22−2250.0%+1.952.9%624
50.6%
 NirvanaChess 2.1c 64-bit 4CPU3095+22−2345.2%+31.447.7%608
51.6%
 Sting SF 4 64-bit 4CPU3095+23−2341.9%+48.648.9%562
60.8%
 Arasan 20.3 64-bit 4CPU3089+32−3252.5%−20.247.4%302
50.2%
 Laser 1.4 64-bit 4CPU3089+19−1949.6%+0.245.7%843
52.3%
 Critter 1.01 64-bit 4CPU3088+28−2846.1%+22.356.1%360
51.2%
 Pedone 1.7 64-bit 4CPU3087+19−1948.2%+11.456.4%801
58.6%
 Texel 1.05 64-bit 4CPU3084+17−1747.3%+19.051.4%1016
55.8%
 Andscacs 0.82 64-bit 4CPU3082+29−2950.6%−3.155.2%330
56.8%
 Critter 0.90 64-bit 4CPU3078+31−3147.6%+13.446.5%316
52.3%
 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
50.7%
 Demolito 2019-04-27 64-bit 4CPU3074+66−6650.0%+0.138.9%72
52.2%
 Nemorino 3.0 64-bit 4CPU3072+27−2747.9%+13.046.1%427
53.0%
 Protector 1.6.0 64-bit 4CPU3071+21−2243.2%+44.150.2%656
49.8%
33Rodent III 0.238 64-bit 4CPU3071+20−2047.2%+14.650.0%742
55.3%
 Rodent III 0.276 64-bit 4CPU3068+30−3050.2%+0.758.0%312
55.9%
 Defenchess 1.1f 64-bit 4CPU3066+18−1951.7%−12.545.3%916
48.7%
 RubiChess 1.3 64-bit 4CPU3066+22−2252.8%−17.944.2%642
61.8%
 Wasp 3.0 64-bit 4CPU3061+25−2551.1%−8.655.0%462
56.8%
 Texel 1.04 64-bit 4CPU3058+21−2143.1%+42.947.8%722
52.5%
34Demolito 2018-10-29 64-bit 4CPU3057+34−3450.4%−5.851.6%252
50.5%
 Alfil 15.8 64-bit 4CPU3056+22−2253.9%−24.047.9%631
50.9%
 NirvanaChess 2.0a 64-bit 4CPU3056+30−3044.7%+35.750.1%337
50.4%
 Protector 1.5.0 64-bit 4CPU3056+18−1842.5%+47.247.4%952
57.4%
35Amoeba 3.0 64-bit 4CPU3053+26−2654.8%−32.744.8%466
48.6%
 Pedone 1.6 64-bit 4CPU3053+23−2349.5%+3.257.7%508
54.9%
 Ethereal 9.00 64-bit 4CPU3051+23−2346.8%+18.845.1%570
69.5%
 Vajolet2 2.4 64-bit 4CPU3043+19−1947.2%+18.445.7%878
53.4%
 Vajolet2 2.2 64-bit 4CPU3042+27−2747.0%+14.848.7%423
55.0%
 Stockfish 1.6.3 64-bit 4CPU3040+22−2258.2%−54.944.8%631
49.6%
 Wasp 2.6 64-bit 4CPU3040+18−1848.9%+7.647.2%968
51.2%
 Arasan 19.2 64-bit 4CPU3039+31−3151.7%−11.455.0%289
50.9%
 Gull R375 64-bit 4CPU3039+22−2243.4%+36.857.4%605
60.1%
 Critter 0.80 64-bit 4CPU3034+31−3050.9%−8.848.3%321
51.2%
 Hannibal 1.3 64-bit 4CPU3033+22−2243.0%+43.048.6%642
51.5%
 Pedone 1.5 64-bit 4CPU3032+31−3149.5%+3.751.6%304
51.2%
 Wasp 2.01 64-bit 4CPU3032+30−3055.3%−32.654.5%321
57.8%
 Vajolet2 2.3 64-bit 4CPU3027+31−3145.2%+25.653.5%303
52.2%
 Arasan 20.0 64-bit 4CPU3026+31−3148.0%+13.253.1%303
51.2%
36Bobcat 8.0 64-bit 4CPU3025+21−2148.3%+11.753.5%636
54.4%
 Andscacs 0.80 64-bit 4CPU3023+31−3150.2%−1.146.7%317
49.6%
 Senpai 1.0 64-bit 4CPU3023+16−1646.2%+21.453.5%1095
49.9%
37Winter 0.6 64-bit 4CPU3023+35−3456.1%−48.535.2%293
53.4%
38Pirarucu 2.7.4 64-bit 4CPU3022+22−2255.7%−40.447.0%659
55.7%
 Pirarucu 2.9.5 64-bit 4CPU3019+35−3550.6%−6.051.9%235
50.5%
 Arasan 19.0.1 64-bit 4CPU3018+34−3354.2%−32.343.1%276
52.2%
39Rybka 2.3.2a 64-bit 4CPU3017+13−1363.1%−88.043.9%1906
54.1%
40Spike 1.4 Leiden 4CPU3016+11−1145.2%+29.647.7%2862
59.5%
41‑42Crafty 25.2 64-bit 4CPU3014+16−1648.5%+9.242.5%1279
50.4%
41‑42chess22k 1.10 64-bit 4CPU3014+22−2246.7%+16.243.7%680
53.8%
 Nemorino 2.00 64-bit 4CPU3012+30−3047.0%+16.259.6%302
55.3%
43Cheng 4.39 64-bit 4CPU3010+15−1650.0%−0.249.1%1288
48.6%
 Laser 1.3 64-bit 4CPU3010+29−3047.2%+15.755.8%321
50.3%
 Texel 1.03 64-bit 4CPU3010+31−3150.3%−1.247.0%313
65.8%
 Pedone 1.4.1 64-bit 4CPU3001+30−3048.5%+8.055.7%305
54.0%
 Vajolet2 2.1 64-bit 4CPU2999+25−2550.9%−3.848.5%462
52.8%
 Rodent III 0.210 64-bit 4CPU2998+28−2845.1%+32.442.5%402
59.1%
 Fizbo 1.5 64-bit 4CPU2993+27−2752.6%−16.348.5%410
66.3%
44Scorpio 2.8 64-bit 4CPU2985+25−2549.9%−0.947.2%472
55.3%
 Protector 1.4.0 64-bit 4CPU2983+19−1942.5%+48.742.9%912
55.8%
 Bobcat 7.6 64-bit 4CPU2980+32−3250.2%−1.141.7%300
48.8%
 Cheng4 0.38 64-bit 4CPU2980+24−2446.0%+23.842.4%531
63.6%
 Rybka 2.2 64-bit 4CPU2975+20−2063.6%−92.941.1%859
53.0%
 Arasan 18.3 64-bit 4CPU2973+30−3046.6%+21.046.8%327
54.4%
 Arasan 18.2 64-bit 4CPU2971+28−2851.9%−14.850.3%388
48.9%
45EXchess 7.97b 64-bit 4CPU2971+18−1747.4%+19.145.9%1017
58.0%
46Spark 1.0 64-bit 4CPU2969+13−1345.0%+32.246.6%1787
49.8%
 Stockfish 1.5.1 64-bit 4CPU2969+25−2553.7%−22.847.7%495
61.9%
 Demolito 2017-08-26 64-bit 4CPU2964+21−2140.2%+63.640.8%748
52.0%
 Winter 0.5 64-bit 4CPU2963+26−2650.4%−5.238.3%470
52.6%
 Protector 1.3.6 64-bit 4CPU2962+32−3246.6%+18.444.3%307
57.6%
 EXchess 7.88b 64-bit 4CPU2958+29−2945.4%+29.248.6%356
49.2%
47Toga II 4.0 64-bit 4CPU2958+18−1941.4%+56.940.4%958
55.6%
 Fizbo 1.31 64-bit 4CPU2955+29−2951.1%−6.341.9%358
60.8%
 Crafty 25.0 64-bit 4CPU2950+25−2548.1%+12.647.9%468
55.0%
 Stockfish 1.4 64-bit 4CPU2948+17−1754.2%−29.042.2%1131
54.8%
 Scorpio 2.7.9 64-bit 4CPU2946+22−2246.7%+20.940.5%659
60.5%
48Gaviota 1.0 64-bit 4CPU2942+16−1647.3%+16.645.4%1256
53.6%
49Tucano 7.07 64-bit 4CPU2941+34−3453.0%−18.944.6%271
52.5%
 EXchess 7.51b 64-bit 4CPU2939+33−3350.7%−2.545.7%276
50.3%
50The Baron 3.44 64-bit 4CPU2939+27−2747.2%+18.044.9%412
58.2%
 Arasan 17.5 64-bit 4CPU2935+27−2748.4%+9.745.1%406
50.3%
 Bobcat 7.1 64-bit 4CPU2935+32−3249.1%+4.746.6%294
49.9%
51Marvin 3.3.2 64-bit 4CPU2935+37−3845.4%+26.744.0%218
53.7%
 EXchess 7.71b 64-bit 4CPU2932+28−2853.3%−22.643.2%403
50.9%
 Fizbo 1.4 64-bit 4CPU2932+28−2845.9%+24.844.7%394
49.0%
 Spark 0.4 64-bit 4CPU2932+21−2143.0%+48.945.2%703
52.5%
 Ethereal 8.62 64-bit 4CPU2931+22−2244.2%+35.949.7%600
59.0%
 Spark 0.3 64-bit 4CPU2928+23−2346.5%+19.949.7%572
52.6%
 Arasan 18.0 64-bit 4CPU2926+29−2947.2%+15.841.5%378
50.3%
52Thinker 5.4d Inert 64-bit 4CPU2926+22−2346.0%+24.349.7%587
58.4%
 Thinker 5.4c Inert 64-bit 4CPU2923+15−1548.1%+13.039.4%1502
53.1%
 Marvin 3.2.0 64-bit 4CPU2922+21−2153.7%−26.443.0%698
57.9%
 Toga II 3.0 4CPU2919+22−2345.6%+27.149.0%592
60.2%
53DisasterArea 1.65 64-bit 4CPU2915+21−2144.2%+35.946.1%709
54.9%
54Gogobello 2.0 64-bit 4CPU2913+25−2550.8%−7.239.1%522
54.1%
 Crafty 23.8 64-bit 4CPU2911+34−3447.6%+15.947.2%267
54.5%
 Asymptote 0.6 64-bit 4CPU2905+84−8351.3%−13.052.5%40
50.6%
 Thinker 5.4a Inert 64-bit 4CPU2904+23−2447.3%+20.245.4%560
51.0%
 Toga II 1.4.1SE 4CPU2904+13−1348.5%+10.641.6%2041
52.1%
 The Baron 3.41 64-bit 4CPU2903+20−2039.1%+71.143.8%800
63.2%
 Cheng4 0.36c 64-bit 4CPU2897+30−3048.8%+6.246.6%326
51.4%
55‑57Bright 0.4a 4CPU2896+15−1547.4%+17.341.1%1495
52.3%
55‑57Glaurung 2.2 64-bit 4CPU2896+16−1647.0%+18.840.7%1259
49.3%
55‑57Tornado 6.0 64-bit 4CPU2896+26−2645.5%+27.443.3%469
51.7%
 Tornado 8.0 64-bit 4CPU2895+19−2045.2%+30.839.0%881
54.2%
 Tornado 7.0 64-bit 4CPU2893+25−2545.3%+31.239.2%502
56.5%
 Bright 0.5c 4CPU2891+23−2347.2%+18.842.9%616
56.5%
58Octochess r5506 64-bit 4CPU2888+21−2144.5%+35.846.7%715
56.3%
59MinkoChess 1.3 64-bit 4CPU2886+21−2146.0%+24.143.7%725
53.3%
 Toga II 1.4 beta5c 4CPU2885+18−1851.7%−12.445.8%996
47.8%
 Tornado 4.88 64-bit 4CPU2885+26−2646.0%+24.941.5%479
57.4%
 Pedone 1.3 64-bit 4CPU2882+29−2946.6%+19.851.0%355
51.1%
 Fruit Reloaded 3.2.1 64-bit 4CPU2881+18−1838.8%+74.839.1%1024
56.7%
 Crafty 24.1 64-bit 4CPU2878+31−3243.5%+41.339.1%322
56.9%
 Scorpio 2.7.6 64-bit 4CPU2874+26−2647.4%+17.144.0%445
64.3%
 Glaurung 2.1 64-bit 4CPU2868+19−1942.8%+51.141.3%946
54.0%
 Bobcat 6.4b 64-bit 4CPU2867+27−2748.3%+11.146.5%415
51.5%
 The Baron 3.29 64-bit 4CPU2866+25−2546.3%+22.643.1%489
51.9%
 EXchess 7.18b 64-bit 4CPU2865+33−3347.3%+16.538.4%292
57.9%
 Scorpio 2.7.5 64-bit 4CPU2860+33−3345.7%+24.850.0%266
51.8%
 Gaviota 0.86 64-bit 4CPU2859+24−2453.4%−26.132.6%617
52.8%
 Arasan 16.3 64-bit 4CPU2858+34−3449.1%+4.240.2%276
49.1%
 Crafty 23.4 64-bit 4CPU2858+34−3446.9%+19.735.7%272
56.5%
60Monolith 1.0 64-bit 4CPU2855+21−2248.6%+8.243.0%693
48.9%
 Scorpio 2.7.7 64-bit 4CPU2855+32−3242.9%+45.241.3%310
54.1%
61Counter 3.2 64-bit 4CPU2853+32−3250.7%−4.740.2%301
56.9%
62Igel 1.9.0 64-bit 4CPU2849+31−3241.0%+59.439.5%324
50.5%
 Topple 0.7.0 64-bit 4CPU2849+91−9341.3%+57.027.5%40
52.9%
63Cheese 2.0 64-bit 4CPU2845+30−3046.2%+23.738.6%365
53.1%
64Shield 2.1 64-bit 4CPU2843+24−2448.7%+9.936.0%594
63.0%
65BugChess2 1.9 64-bit 4CPU2838+21−2143.4%+44.338.2%738
52.1%
 Crafty 23.3 64-bit 4CPU2837+31−3241.5%+55.138.2%325
48.9%
66Loop 13.6 (Loop 2007) 64-bit 4CPU2837+19−1948.3%+12.542.8%894
71.9%
 Bright 0.3a 4CPU2830+18−1842.4%+50.741.8%988
53.6%
 Glaurung 2.0.1 64-bit 4CPU2828+17−1743.8%+39.243.5%1100
64.0%
 Octochess r5190 64-bit 4CPU2823+24−2445.9%+23.844.5%555
57.9%
 Pedone 1.1 64-bit 4CPU2819+31−3153.7%−31.939.5%347
51.1%
 Arminius 2018-12-23 64-bit 4CPU2818+44−4444.2%+41.036.4%165
53.9%
67Jonny 4.00 4CPU2815+25−2543.6%+42.835.0%540
72.4%
 Bright 0.2c 4CPU2805+21−2143.9%+40.443.2%724
58.3%
 Pedone 1.2 64-bit 4CPU2801+36−3648.4%+8.742.3%246
64.3%
 Crafty 23.1 64-bit 4CPU2791+36−3743.8%+42.936.9%241
52.4%
 Laser 1.0 64-bit 4CPU2789+37−3836.3%+90.239.2%227
58.6%
 Bagatur 1.7a 64-bit 4CPU2774+131−13445.0%+31.020.0%20
55.3%
 Glaurung 1.2.1 64-bit 4CPU2765+19−1940.2%+64.238.1%967
68.2%
 Crafty 23.0 64-bit 4CPU2759+18−1839.0%+77.334.1%1042
68.6%
68Fridolin 3.10 64-bit 4CPU2749+33−3349.5%−0.431.5%308
55.7%
 Alfil 13.1 64-bit 4CPU2745+28−2841.8%+53.834.1%440
77.0%
 Scorpio 2.0 32-bit 4CPU2731+24−2433.4%+115.436.7%607
63.3%
69Nebula 2.0 64-bit 4CPU2726+20−2045.1%+35.434.1%866
65.5%
 Scorpio 2.1 64-bit 4CPU2719+27−2734.4%+108.831.6%490
80.9%
 Igel 1.4.1 64-bit 4CPU2701+28−2850.7%−7.026.3%448
77.2%
70Hamsters 0.7.1 4CPU2685+32−3252.4%−14.136.2%318
53.8%
71RedQueen 1.1.98 64-bit 4CPU2683+27−2739.4%+80.428.5%494
65.8%
72ECE X3 64-bit 4CPU2676+23−2341.5%+68.223.4%709
56.5%
73Pharaon 3.5.1 4CPU2673+26−2643.6%+41.629.7%518
62.6%
74Jellyfish 1.1 64-bit 4CPU2666+29−2953.3%−24.632.3%403
60.1%
 RedQueen 1.1.97 64-bit 4CPU2662+22−2245.7%+26.633.3%726
71.9%
75Ghost 3.1 64-bit 4CPU2651+30−2953.9%−25.728.5%393
52.8%
76Arminius 2015-08-06 64-bit 4CPU2649+33−3344.2%+38.736.1%302
53.2%
 Gaviota 0.83 64-bit 4CPU2648+25−2547.3%+20.427.9%566
99.6%
 Fridolin 2.00 64-bit 4CPU2588+34−3441.9%+57.231.3%297
93.2%
77Delphil 3.2 64-bit 4CPU2554+31−3138.2%+85.330.5%374
52.5%
78Jazz 840 64-bit 4CPU2553+20−2057.8%−64.325.3%1000
91.4%
79Nemeton 1.8 4CPU2529+27−2749.9%+1.727.2%496
86.6%
80Jumbo 0.6.66 64-bit 4CPU2508+28−2850.0%−1.233.0%433
88.1%
81Myrddin 0.87 64-bit 4CPU2481+35−3538.9%+81.528.4%296
85.9%
 Invictus r228 64-bit 4CPU2339+242−29528.6%+167.00.0%7
 

Results matrix

Free 4-CPU engines (best versions only), top 12
#NameElo123456789101112
1Stockfish 2019-10-09 64-bit 4CPU3491 15.5 − 7.5
+8−0=15
−46
14.5 − 3.5
+11−0=7
+59
 19 − 5
+14−0=10
+19
11.5 − 4.5
+7−0=9
−74
18 − 2
+16−0=4
+119
14 − 2
+12−0=4
+79
    
2Ethereal 11.75 64-bit 4CPU33497.5 − 15.5
+0−8=15
+46
 12 − 10
+3−1=18
+22
 14 − 10
+5−1=18
+15
13 − 9
+5−1=16
−12
14.5 − 9.5
+6−1=17
−8
13 − 9
+5−1=16
−17
13.5 − 10.5
+6−3=15
−38
   
3Xiphos 0.6 64-bit 4CPU33493.5 − 14.5
+0−11=7
−59
10 − 12
+1−3=18
−22
  9.5 − 8.5
+3−2=13
−11
11 − 7
+6−2=10
−1
13 − 7
+6−0=14
+17
10.5 − 7.5
+5−2=11
−19
11.5 − 6.5
+6−1=11
+6
   
4Komodo 10 64-bit 4CPU3346            
5Fire 7.1 64-bit 4CPU33225 − 19
+0−14=10
−19
10 − 14
+1−5=18
−15
8.5 − 9.5
+2−3=13
+11
  19 − 13
+10−4=18
+19
18 − 14
+5−1=26
−5
19 − 13
+7−1=24
+10
25.5 − 20.5
+11−6=29
−15
19.5 − 12.5
+9−2=21
+3
24.5 − 13.5
+12−1=25
+20
 
6RofChade 2.202 64-bit 4CPU32874.5 − 11.5
+0−7=9
+74
9 − 13
+1−5=16
+12
7 − 11
+2−6=10
+1
 13 − 19
+4−10=18
−19
 15 − 17
+3−5=24
−18
15 − 17
+4−6=22
−22
16 − 16
+6−6=20
−7
18 − 14
+7−3=22
+11
16.5 − 15.5
+6−5=21
−12
 
7Defenchess 2.2 64-bit 4CPU32852 − 18
+0−16=4
−119
9.5 − 14.5
+1−6=17
+8
7 − 13
+0−6=14
−17
 14 − 18
+1−5=26
+5
17 − 15
+5−3=24
+18
 16 − 16
+6−6=20
−2
19 − 13
+8−2=22
+42
18.5 − 13.5
+7−2=23
+18
16.5 − 15.5
+5−4=23
−13
 
8Laser 1.7 64-bit 4CPU32832 − 14
+0−12=4
−79
9 − 13
+1−5=16
+17
7.5 − 10.5
+2−5=11
+19
 13 − 19
+1−7=24
−10
17 − 15
+6−4=22
+22
16 − 16
+6−6=20
+2
 16 − 14
+6−4=20
+11
16.5 − 15.5
+5−4=23
−9
19 − 13
+7−1=24
+28
 
9Fizbo 2 64-bit 4CPU3277 10.5 − 13.5
+3−6=15
+38
6.5 − 11.5
+1−6=11
−6
 20.5 − 25.5
+6−11=29
+15
16 − 16
+6−6=20
+7
13 − 19
+2−8=22
−42
14 − 16
+4−6=20
−11
 21 − 17
+8−4=26
+17
21.5 − 16.5
+11−6=21
+26
 
10Andscacs 0.95 64-bit 4CPU3266    12.5 − 19.5
+2−9=21
−3
14 − 18
+3−7=22
−11
13.5 − 18.5
+2−7=23
−18
15.5 − 16.5
+4−5=23
+9
17 − 21
+4−8=26
−17
 16.5 − 15.5
+6−5=21
+9
 
11Booot 6.3.1 64-bit 4CPU3264    13.5 − 24.5
+1−12=25
−20
15.5 − 16.5
+5−6=21
+12
15.5 − 16.5
+4−5=23
+13
13 − 19
+1−7=24
−28
16.5 − 21.5
+6−11=21
−26
15.5 − 16.5
+5−6=21
−9
  
12RubiChess 1.6 64-bit 4CPU3237            
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 2019-10-09 64-bit 4CPU3491 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Ethereal 11.75 64-bit 4CPU33490.0 48.855.195.2100.0100.0100.0100.0100.0100.0100.0
3Xiphos 0.6 64-bit 4CPU33490.051.2 55.993.499.999.9100.0100.0100.0100.0100.0
4Komodo 10 64-bit 4CPU33460.044.944.1 96.2100.0100.0100.0100.0100.0100.0100.0
5Fire 7.1 64-bit 4CPU33220.04.86.63.8 99.699.8100.0100.0100.0100.0100.0
6RofChade 2.202 64-bit 4CPU32870.00.00.10.00.4 55.361.177.992.495.599.5
7Defenchess 2.2 64-bit 4CPU32850.00.00.10.00.244.7 55.773.690.694.299.3
8Laser 1.7 64-bit 4CPU32830.00.00.00.00.038.944.3 70.290.194.499.4
9Fizbo 2 64-bit 4CPU32770.00.00.00.00.022.126.429.8 82.790.899.1
10Andscacs 0.95 64-bit 4CPU32660.00.00.00.00.07.69.49.917.3 57.494.2
11Booot 6.3.1 64-bit 4CPU32640.00.00.00.00.04.55.85.69.242.6 93.8
12RubiChess 1.6 64-bit 4CPU32370.00.00.00.00.00.50.70.60.95.86.2 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

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Rating list
Testing profile
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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
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Reference rating list:
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Created in 2005-2013 by CCRL team
Last games added on December 10, 2019