CCRL 40/40
Downloads and Statistics
March 16, 2019
Testing summary:
Total: 1'004'662 games
played by 2'384 programs
138170 CPU days (X2 4600+)

White wins: 348'320 (34.7%)
Black wins: 258'847 (25.8%)
Draws: 397'495 (39.6%)
White score: 54.5%

Free 4-CPU engines

Comparing 275 engines!
71 best versions of selected engines played 10220 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 Intel CPU.
Computed on March 16, 2019 with Bayeselo based on 1'004'662 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 10 64-bit 4CPU3463+23−2377.7%−190.342.9%678 
69.8%
 Stockfish 270918 64-bit 4CPU3453+28−2777.9%−188.443.3%457
85.6%
 SugaR XPrO 1.5.3 64-bit 4CPU3433+24−2471.8%−143.351.3%544
55.4%
 Stockfish 9 64-bit 4CPU3432+15−1572.3%−153.550.5%1423
95.5%
 SugaR XPrO 1.4 64-bit 4CPU3411+20−1972.3%−150.351.8%840
55.5%
 asmFish 051117 64-bit 4CPU3409+20−1969.8%−130.255.7%819
75.1%
 SugaR XPrO 1.2 64-bit 4CPU3399+21−2070.4%−135.852.5%754
62.8%
 ShashChess Pro 1.0 64-bit 4CPU3393+33−3365.6%−94.461.7%256
77.7%
 Stockfish 8 64-bit 4CPU3378+14−1465.1%−96.362.1%1647
64.7%
 SugaR XPrO 1.3 64-bit 4CPU3373+23−2266.0%−102.757.4%598
100.0%
 Stockfish 7 64-bit 4CPU3326+15−1567.0%−105.857.3%1304
72.1%
2Fire 7.1 64-bit 4CPU3319+16−1657.9%−49.558.0%1129
79.4%
3Komodo 9 64-bit 4CPU3308+20−1970.4%−123.952.7%804
74.2%
4Ethereal 11.00 64-bit 4CPU3298+20−2048.7%+8.463.9%714
55.9%
 Laser 1.7 64-bit 4CPU3295+43−4261.2%−65.360.5%152
56.0%
 Stockfish 6 64-bit 4CPU3291+14−1465.3%−94.157.3%1542
53.4%
 Ethereal 11.25 64-bit 4CPU3289+57−5843.3%+40.859.8%82
51.3%
 Fire 6.1 64-bit 4CPU3288+17−1848.5%+7.458.4%940
57.8%
 Komodo 8 64-bit 4CPU3285+16−1669.8%−126.549.0%1298
55.2%
 Andscacs 0.95 64-bit 4CPU3282+42−4251.0%−7.361.7%154
57.9%
5Fizbo 2 64-bit 4CPU3277+15−1547.1%+18.154.6%1356
57.1%
 Ethereal 10.55 64-bit 4CPU3275+24−2549.8%−2.157.4%488
65.3%
 Stockfish 5 64-bit 4CPU3269+15−1567.9%−111.153.7%1324
62.0%
 Fire 5 64-bit 4CPU3265+18−1846.9%+18.062.5%867
54.0%
6Andscacs 0.94 64-bit 4CPU3264+19−1948.3%+9.755.1%876
54.2%
7Booot 6.3.1 64-bit 4CPU3262+19−1945.0%+31.056.0%825
71.5%
 Fizbo 1.9 64-bit 4CPU3255+17−1745.7%+25.955.5%1004
58.3%
8Xiphos 0.4 64-bit 4CPU3252+19−1943.8%+39.061.1%830
82.4%
 Andscacs 0.921 64-bit 4CPU3240+16−1650.7%−6.647.5%1225
52.0%
 Andscacs 0.93 64-bit 4CPU3239+18−1842.9%+45.554.8%938
63.6%
 Stockfish DD 64-bit 4CPU3235+17−1763.5%−81.355.5%992
65.3%
 Andscacs 0.91 64-bit 4CPU3229+22−2242.5%+47.459.2%596
52.3%
 Komodo 7a 64-bit 4CPU3228+18−1860.7%−65.159.0%897
64.7%
 Andscacs 0.89 64-bit 4CPU3222+21−2145.9%+29.055.0%662
55.3%
 Komodo TCEC 64-bit 4CPU3221+18−1862.4%−78.555.0%885
58.7%
 Booot 6.2 64-bit 4CPU3218+14−1542.2%+50.859.2%1427
50.7%
9Laser 1.6 64-bit 4CPU3218+17−1742.4%+50.656.1%1034
69.8%
 Komodo 6 64-bit 4CPU3211+16−1658.6%−52.556.7%1065
51.7%
 Andscacs 0.88 64-bit 4CPU3210+31−3241.1%+55.055.9%297
56.7%
 Andscacs 0.90 64-bit 4CPU3207+24−2450.3%+2.455.1%515
52.7%
 Stockfish 4 64-bit 4CPU3206+17−1760.9%−64.558.9%1054
62.5%
10Schooner 2.0.34 64-bit 4CPU3201+21−2148.9%+6.359.2%612
53.7%
 Andscacs 0.872 64-bit 4CPU3200+24−2451.3%−5.558.8%476
48.2%
 Komodo 5.1 64-bit 4CPU3200+20−2061.8%−71.854.8%715
56.3%
 Fire 4 64-bit 4CPU3198+12−1246.5%+22.359.7%1885
76.7%
 Ethereal 10.00 64-bit 4CPU3189+20−2053.4%−22.750.8%788
52.3%
 ChessBrainVB 3.72 4CPU3188+40−4143.3%+42.150.0%180
53.7%
11Houdini 1.5a 64-bit 4CPU3186+19−1963.5%−89.043.9%931
69.8%
12Gull 3 64-bit 4CPU3180+10−1041.7%+53.354.5%3651
53.1%
 Fizbo 1.8 64-bit 4CPU3179+21−2143.6%+43.249.7%708
51.8%
 Gull 2.8b 64-bit 4CPU3179+19−1949.1%+3.551.8%797
49.4%
13NirvanaChess 2.4 64-bit 4CPU3179+14−1439.2%+71.453.2%1550
50.7%
 Xiphos 0.3 64-bit 4CPU3179+21−2149.2%+3.154.2%660
51.3%
14RofChade 2.0 64-bit 4CPU3178+21−2149.7%+1.557.7%620
57.1%
15‑16Arasan 21.2 64-bit 4CPU3175+36−3651.5%−8.564.2%201
49.5%
15‑16Equinox 3.20 64-bit 4CPU3175+11−1141.6%+54.059.3%2504
68.6%
 Arasan 21.1 64-bit 4CPU3168+27−2751.2%−8.359.5%383
50.9%
 Booot 6.1 64-bit 4CPU3167+20−2041.6%+52.060.6%708
51.7%
 Stockfish 3 64-bit 4CPU3166+21−2156.0%−34.957.8%663
62.9%
 Equinox 3.30 64-bit 4CPU3162+18−1843.9%+38.458.9%896
59.5%
17Critter 1.6a 64-bit 4CPU3159+8−845.3%+32.254.6%5429
60.5%
18Nemorino 5.00 64-bit 4CPU3156+20−2049.9%−0.652.1%739
55.8%
19Hannibal 1.7 64-bit 4CPU3154+14−1442.0%+50.954.6%1473
57.6%
 NirvanaChess 2.3 64-bit 4CPU3152+18−1841.4%+55.556.8%869
55.5%
 Fire 3.0 64-bit 4CPU3150+17−1749.5%+3.058.2%948
54.2%
20Bouquet 1.8 64-bit 4CPU3149+11−1143.6%+41.556.7%2427
54.0%
 Pedone 1.8 64-bit 4CPU3147+43−4352.5%−15.468.3%142
49.6%
 Stockfish 2.2.2 64-bit 4CPU3147+16−1659.2%−56.253.4%1141
53.1%
 Critter 1.2 64-bit 4CPU3146+20−2058.9%−54.752.9%762
54.2%
 Andscacs 0.86 64-bit 4CPU3145+21−2141.5%+54.454.9%703
48.6%
 Critter 1.4 64-bit 4CPU3145+19−1960.7%−65.053.7%843
57.4%
 Gull 2.3 64-bit 4CPU3143+17−1747.4%+14.659.3%982
48.7%
 Laser 1.5 64-bit 4CPU3143+20−2049.4%+8.354.5%723
51.3%
 Stockfish 2.3.1 64-bit 4CPU3143+19−1955.4%−33.452.5%846
50.2%
21Texel 1.07 64-bit 4CPU3143+14−1449.9%+2.549.0%1568
62.4%
 NirvanaChess 2.2 64-bit 4CPU3139+18−1840.7%+59.857.5%961
51.5%
22Protector 1.9.0 64-bit 4CPU3138+15−1546.3%+26.254.1%1313
55.1%
23Alfil 15.7 64-bit 4CPU3137+17−1742.9%+48.356.3%1006
58.7%
 Andscacs 0.85 64-bit 4CPU3134+25−2543.9%+42.153.1%467
49.8%
24Vajolet2 2.6.1 64-bit 4CPU3134+22−2249.5%+2.360.5%550
53.7%
 Bouquet 1.5 64-bit 4CPU3132+23−2346.4%+20.563.6%500
50.6%
 Sting SF 4.8.4 64-bit 4CPU3132+29−2953.3%−21.062.4%330
49.1%
 Sting SF 6 64-bit 4CPU3132+28−2850.8%−6.261.0%354
51.3%
 Texel 1.06 64-bit 4CPU3132+20−2046.1%+24.953.6%739
59.1%
 DeepSaros 4.1.6 64-bit 4CPU3128+26−2645.2%+28.457.5%419
50.2%
 Stockfish 2.0.1 64-bit 4CPU3128+24−2456.4%−40.848.6%514
56.5%
 Protector 1.8.0 64-bit 4CPU3125+27−2750.4%−2.154.7%386
51.8%
25ChessBrainVB 3.68 4CPU3124+26−2649.2%+3.851.6%428
49.6%
 Gull 3.1 64-bit 4CPU3124+30−3045.4%+33.445.1%359
52.2%
26BlackMamba 2.0 64-bit 4CPU3123+15−1544.2%+37.754.3%1408
58.7%
 Arasan 20.4.1 64-bit 4CPU3120+26−2551.7%−11.050.2%452
52.1%
 Fizbo 1.7 64-bit 4CPU3119+27−2756.1%−39.052.5%396
50.8%
 Elektro 1.2 64-bit 4CPU3118+23−2346.1%+27.355.5%546
51.1%
 Sting SF 5 64-bit 4CPU3118+25−2548.1%+12.454.0%465
52.0%
 Pedone 1.9 64-bit 4CPU3115+110−11147.6%+9.466.7%21
50.9%
 IvanHoe 9.46h 64-bit 4CPU3114+14−1453.2%−19.959.5%1542
49.3%
 Stockfish 2.1.1 64-bit 4CPU3114+27−2754.7%−29.148.3%406
54.5%
 RobboLito 0.21Q 64-bit 4CPU3112+22−2250.9%−6.262.7%569
50.0%
 Stockfish 1.9.1 64-bit 4CPU3112+23−2362.1%−81.046.2%580
53.5%
 Hannibal 1.5 64-bit 4CPU3110+19−1953.2%−20.157.1%819
54.7%
 Bouquet 1.6 64-bit 4CPU3109+21−2150.0%−0.660.7%641
48.6%
27Senpai 2.0 64-bit 4CPU3109+20−2050.9%−7.448.9%750
50.3%
 Sting SF 3 64-bit 4CPU3109+21−2147.7%+11.858.5%644
52.2%
 Sting SF 2 64-bit 4CPU3108+27−2748.8%+8.458.1%375
52.1%
 Stockfish 1.8 64-bit 4CPU3107+19−1962.2%−81.649.3%850
52.9%
 ChessBrainVB 3.66 4CPU3106+28−2854.2%−27.248.7%378
53.5%
 Andscacs 0.83 64-bit 4CPU3104+29−2946.6%+18.951.2%338
50.1%
 Stockfish 1.7.1 64-bit 4CPU3104+19−1960.7%−69.852.8%860
54.1%
 Xiphos 0.2.2 64-bit 4CPU3102+26−2647.3%+14.253.6%414
52.8%
 RubiChess 1.3 64-bit 4CPU3100+60−5864.1%−90.739.1%92
49.3%
28Wasp 3.50 64-bit 4CPU3100+21−2149.6%−0.253.4%701
55.7%
 Gull 2.2 64-bit 4CPU3098+25−2544.5%+31.154.8%469
52.4%
 Vajolet2 2.5 64-bit 4CPU3097+24−2451.5%−9.854.0%493
53.1%
 NirvanaChess 2.1c 64-bit 4CPU3096+23−2345.2%+30.847.7%608
50.0%
 Sting SF 9 64-bit 4CPU3096+34−3450.6%−4.245.5%266
50.6%
29Naum 4.6 64-bit 4CPU3095+14−1448.1%+12.054.3%1544
50.5%
 Nemorino 4.00 64-bit 4CPU3095+22−2250.0%+1.452.9%624
50.3%
 Sting SF 4 64-bit 4CPU3095+23−2341.9%+49.048.9%562
63.1%
 Arasan 20.3 64-bit 4CPU3088+32−3252.5%−19.947.4%302
49.9%
 Critter 1.01 64-bit 4CPU3088+31−3149.3%+2.758.0%295
50.5%
 Laser 1.4 64-bit 4CPU3088+19−1949.6%+0.345.7%843
53.3%
30Pedone 1.7 64-bit 4CPU3087+19−1948.2%+10.956.4%801
56.4%
 Texel 1.05 64-bit 4CPU3085+17−1747.3%+18.351.4%1016
55.8%
 Andscacs 0.82 64-bit 4CPU3082+29−2950.6%−2.855.2%330
51.2%
 Pirarucu 2.9.5 64-bit 4CPU3080+106−10941.3%+49.856.5%23
51.2%
 Critter 0.90 64-bit 4CPU3079+31−3147.6%+13.546.5%316
53.2%
 Andscacs 0.81 64-bit 4CPU3077+31−3248.7%+5.849.3%300
49.1%
 Hannibal 1.4b 64-bit 4CPU3077+15−1542.3%+47.951.3%1332
57.2%
 Protector 1.7.0 64-bit 4CPU3075+19−1944.1%+36.950.6%834
59.2%
 Nemorino 3.0 64-bit 4CPU3071+27−2747.9%+13.146.1%427
50.3%
 Protector 1.6.0 64-bit 4CPU3071+21−2243.2%+44.450.2%656
54.5%
31Rodent III 0.238 64-bit 4CPU3069+20−2047.2%+15.250.0%742
61.8%
32Defenchess (SCTR) 1.1f 64-bit 4CPU3065+19−1951.8%−12.545.0%854
61.4%
 Wasp 3.0 64-bit 4CPU3060+25−2551.1%−8.255.0%462
55.3%
 Texel 1.04 64-bit 4CPU3058+21−2143.1%+43.147.8%722
54.7%
 Alfil 15.8 64-bit 4CPU3056+22−2253.9%−23.947.9%631
50.5%
 NirvanaChess 2.0a 64-bit 4CPU3056+30−3044.7%+36.150.1%337
50.2%
 Protector 1.5.0 64-bit 4CPU3056+18−1842.5%+47.747.4%952
58.1%
 Pedone 1.6 64-bit 4CPU3053+23−2349.5%+2.957.7%508
56.6%
 Ethereal 9.00 64-bit 4CPU3050+23−2346.8%+19.045.1%570
67.0%
 Vajolet2 2.2 64-bit 4CPU3042+27−2747.0%+15.148.7%423
49.9%
 Vajolet2 2.4 64-bit 4CPU3042+19−1947.2%+18.245.7%878
52.0%
 Demolito 2018-10-29 64-bit 4CPU3041+45−4553.9%−26.252.8%142
50.3%
 Stockfish 1.6.3 64-bit 4CPU3040+22−2258.2%−54.044.8%631
53.1%
 Arasan 19.2 64-bit 4CPU3039+31−3151.7%−11.555.0%289
49.7%
 Gull R375 64-bit 4CPU3039+22−2243.4%+37.357.4%605
50.2%
 Rodent III 0.276 64-bit 4CPU3039+63−6445.3%+29.165.6%64
50.0%
 Wasp 2.6 64-bit 4CPU3039+18−1848.9%+7.747.2%968
51.3%
 Tucano 7.06 64-bit 4CPU3035+208−21655.6%−116.844.4%9
50.5%
 Critter 0.80 64-bit 4CPU3034+31−3050.9%−8.248.3%321
51.5%
 Hannibal 1.3 64-bit 4CPU3033+22−2243.0%+43.448.6%642
53.3%
 Pedone 1.5 64-bit 4CPU3032+31−3149.5%+3.251.6%304
50.1%
 Wasp 2.01 64-bit 4CPU3032+30−3055.3%−32.454.5%321
56.4%
 Vajolet2 2.3 64-bit 4CPU3028+31−3243.7%+35.754.7%287
54.8%
 Arasan 20.0 64-bit 4CPU3025+34−3449.0%+8.457.1%240
52.6%
 Andscacs 0.80 64-bit 4CPU3024+31−3150.2%−1.646.7%317
49.8%
 Senpai 1.0 64-bit 4CPU3024+16−1646.2%+20.753.5%1095
50.8%
33Bobcat 8.0 64-bit 4CPU3023+23−2347.3%+17.553.4%566
58.7%
 Arasan 19.0.1 64-bit 4CPU3019+34−3354.2%−32.643.1%276
52.1%
34Rybka 2.3.2a 64-bit 4CPU3018+13−1363.1%−88.343.9%1906
55.0%
35Spike 1.4 Leiden 4CPU3017+11−1145.2%+29.147.7%2862
54.6%
36Pirarucu 2.7.4 64-bit 4CPU3015+23−2355.5%−38.246.0%567
56.8%
37‑38Crafty 25.2 64-bit 4CPU3013+16−1648.4%+9.243.6%1187
47.9%
37‑38chess22k 1.10 64-bit 4CPU3013+22−2246.7%+16.943.7%680
53.4%
 Nemorino 2.00 64-bit 4CPU3012+30−3047.0%+16.159.6%302
53.6%
39Cheng 4.39 64-bit 4CPU3010+16−1650.0%+0.249.2%1218
50.2%
 Laser 1.3 64-bit 4CPU3010+30−2947.2%+15.755.8%321
49.4%
 Texel 1.03 64-bit 4CPU3010+31−3150.3%−0.847.0%313
65.7%
 Pedone 1.4.1 64-bit 4CPU3001+31−3148.5%+8.355.7%305
54.1%
 Vajolet2 2.1 64-bit 4CPU2999+25−2550.9%−3.448.5%462
54.8%
 Rodent III 0.210 64-bit 4CPU2997+28−2845.1%+32.942.5%402
50.6%
40Scorpio 2.8 64-bit 4CPU2997+30−3050.9%−9.345.2%332
56.2%
 Fizbo 1.5 64-bit 4CPU2993+27−2752.6%−16.048.5%410
73.0%
 Protector 1.4.0 64-bit 4CPU2983+19−1942.5%+49.142.9%912
55.6%
 Cheng4 0.38 64-bit 4CPU2981+24−2446.0%+23.242.4%531
51.0%
 Bobcat 7.6 64-bit 4CPU2980+32−3250.2%−0.741.7%300
58.8%
 Rybka 2.2 64-bit 4CPU2976+20−2063.9%−94.741.6%831
54.6%
 Arasan 18.3 64-bit 4CPU2974+30−3046.6%+20.146.8%327
51.9%
41EXchess 7.97b 64-bit 4CPU2973+18−1846.6%+22.945.4%953
53.4%
 Arasan 18.2 64-bit 4CPU2971+28−2851.9%−14.650.3%388
52.1%
 Stockfish 1.5.1 64-bit 4CPU2970+25−2553.7%−22.947.7%495
52.0%
42Spark 1.0 64-bit 4CPU2969+13−1345.0%+32.646.6%1787
62.4%
 Protector 1.3.6 64-bit 4CPU2964+33−3345.7%+24.144.7%291
51.5%
43Demolito 2017-08-26 64-bit 4CPU2963+21−2140.2%+63.540.8%748
50.2%
 Winter 0.5 64-bit 4CPU2963+57−5752.0%−16.635.4%99
55.2%
44Toga II 4.0 64-bit 4CPU2959+19−1940.8%+60.440.0%872
51.9%
 EXchess 7.88b 64-bit 4CPU2958+29−2945.4%+29.448.6%356
54.0%
 Fizbo 1.31 64-bit 4CPU2956+30−3051.1%−7.041.9%358
61.0%
 Crafty 25.0 64-bit 4CPU2950+25−2548.1%+12.847.9%468
53.4%
 Stockfish 1.4 64-bit 4CPU2949+17−1754.2%−29.142.2%1131
58.8%
 Scorpio 2.7.9 64-bit 4CPU2945+22−2246.7%+21.440.5%659
60.0%
45Gaviota 1.0 64-bit 4CPU2942+16−1647.3%+16.145.4%1256
55.6%
 EXchess 7.51b 64-bit 4CPU2939+33−3350.7%−2.145.7%276
57.7%
 Arasan 17.5 64-bit 4CPU2935+27−2748.4%+10.145.1%406
54.1%
 Bobcat 7.1 64-bit 4CPU2933+33−3348.0%+12.247.1%278
49.6%
 Spark 0.4 64-bit 4CPU2933+21−2143.0%+48.745.2%703
49.8%
 The Baron 3.44 64-bit 4CPU2933+40−4147.1%+19.942.9%191
51.0%
 EXchess 7.71b 64-bit 4CPU2932+28−2853.3%−22.543.2%403
50.3%
 Fizbo 1.4 64-bit 4CPU2932+28−2845.9%+25.444.7%394
53.7%
 Ethereal 8.62 64-bit 4CPU2931+22−2244.2%+35.249.7%600
55.5%
 Spark 0.3 64-bit 4CPU2928+23−2346.5%+20.649.7%572
53.4%
 Arasan 18.0 64-bit 4CPU2927+29−2947.2%+15.241.5%378
48.7%
46Thinker 5.4d Inert 64-bit 4CPU2927+23−2346.9%+18.350.4%557
59.5%
 Thinker 5.4c Inert 64-bit 4CPU2924+15−1548.1%+12.739.4%1502
63.4%
 Toga II 3.0 4CPU2919+22−2345.6%+27.349.0%592
54.6%
47Marvin 3.2.0 64-bit 4CPU2917+23−2354.2%−29.642.0%609
53.1%
48DisasterArea 1.65 64-bit 4CPU2916+21−2145.0%+30.446.2%680
59.8%
 Crafty 23.8 64-bit 4CPU2911+33−3447.6%+16.247.2%267
60.2%
 Thinker 5.4a Inert 64-bit 4CPU2905+23−2447.3%+20.245.4%560
51.5%
 Toga II 1.4.1SE 4CPU2905+13−1348.5%+10.641.6%2041
57.2%
49The Baron 3.41 64-bit 4CPU2902+20−2039.1%+71.343.8%800
66.0%
50Bright 0.4a 4CPU2897+15−1547.4%+17.141.1%1495
49.9%
 Cheng4 0.36c 64-bit 4CPU2897+30−3048.8%+6.446.6%326
51.7%
 Glaurung 2.2 64-bit 4CPU2896+16−1647.0%+19.540.7%1259
49.8%
51Tornado 6.0 64-bit 4CPU2896+26−2645.1%+30.443.5%453
54.7%
 Tornado 7.0 64-bit 4CPU2894+25−2545.3%+31.139.2%502
58.4%
 Bright 0.5c 4CPU2891+23−2347.2%+18.942.9%616
54.8%
 Tornado 8.0 64-bit 4CPU2889+20−2044.3%+36.038.6%819
52.3%
52Octochess r5506 64-bit 4CPU2888+21−2144.6%+34.846.9%685
55.9%
53MinkoChess 1.3 64-bit 4CPU2886+21−2146.0%+24.143.7%725
49.5%
 Tornado 4.88 64-bit 4CPU2886+25−2646.0%+24.341.5%479
51.8%
 Toga II 1.4 beta5c 4CPU2885+18−1851.7%−11.945.8%996
56.7%
 Pedone 1.3 64-bit 4CPU2882+29−2946.6%+20.151.0%355
57.0%
 Crafty 24.1 64-bit 4CPU2878+31−3243.5%+41.739.1%322
49.8%
 Fruit Reloaded 3.2.1 64-bit 4CPU2878+19−1938.2%+79.238.5%947
58.7%
 Scorpio 2.7.6 64-bit 4CPU2875+26−2647.4%+16.444.0%445
62.5%
 Glaurung 2.1 64-bit 4CPU2869+19−1942.8%+51.241.3%946
55.9%
 Bobcat 6.4b 64-bit 4CPU2867+27−2748.3%+11.346.5%415
50.6%
 The Baron 3.29 64-bit 4CPU2867+25−2546.3%+22.343.1%489
51.7%
 EXchess 7.18b 64-bit 4CPU2866+35−3546.7%+19.837.9%256
51.3%
 Crafty 23.4 64-bit 4CPU2865+37−3747.2%+16.935.2%236
59.2%
 Gaviota 0.86 64-bit 4CPU2860+24−2453.4%−26.832.6%617
53.4%
 Arasan 16.3 64-bit 4CPU2858+34−3449.1%+4.340.2%276
51.6%
 Scorpio 2.7.5 64-bit 4CPU2857+36−3644.1%+33.950.9%230
51.5%
 Scorpio 2.7.7 64-bit 4CPU2856+32−3242.9%+44.741.3%310
82.9%
54‑56BugChess2 1.9 64-bit 4CPU2838+21−2143.4%+44.038.2%738
50.0%
 Crafty 23.3 64-bit 4CPU2838+31−3241.5%+54.938.2%325
48.2%
54‑56Loop 13.6 (Loop 2007) 64-bit 4CPU2838+19−1948.3%+12.142.7%878
51.4%
54‑56Shield 2.1 64-bit 4CPU2838+25−2547.8%+15.436.7%526
55.0%
 Cheese 2.0 64-bit 4CPU2834+59−6043.3%+48.839.3%89
54.1%
 Bright 0.3a 4CPU2830+18−1842.4%+51.441.8%988
54.4%
 Glaurung 2.0.1 64-bit 4CPU2829+17−1743.8%+38.643.5%1100
64.3%
 Octochess r5190 64-bit 4CPU2823+24−2445.9%+24.244.5%555
58.9%
 Pedone 1.1 64-bit 4CPU2819+31−3153.7%−32.039.5%347
54.1%
57Jonny 4.00 4CPU2817+26−2642.9%+47.435.7%476
73.2%
 Bright 0.2c 4CPU2806+21−2143.9%+39.843.2%724
50.6%
 Counter 3.2 64-bit 4CPU2805+101−10441.1%+54.846.4%28
53.1%
 Pedone 1.2 64-bit 4CPU2800+39−3949.5%+2.441.0%210
51.7%
 Monolith 1.0 64-bit 4CPU2799+68−7033.3%+100.645.5%66
50.5%
 Laser 1.0 64-bit 4CPU2798+39−4037.2%+84.239.6%207
59.2%
 Crafty 23.1 64-bit 4CPU2792+36−3743.8%+42.736.9%241
89.1%
 Glaurung 1.2.1 64-bit 4CPU2766+19−1940.2%+63.638.1%967
67.7%
 Crafty 23.0 64-bit 4CPU2759+18−1839.0%+77.934.1%1042
80.9%
 Alfil 13.1 64-bit 4CPU2742+32−3243.3%+42.636.0%328
69.5%
 Scorpio 2.0 32-bit 4CPU2732+24−2433.4%+114.936.7%607
64.8%
58Nebula 2.0 64-bit 4CPU2725+21−2245.4%+34.634.2%767
63.4%
 Scorpio 2.1 64-bit 4CPU2719+27−2734.4%+109.431.6%490
55.2%
 Arminius 2018-12-23 64-bit 4CPU2711+106−11825.9%+164.031.0%29
60.7%
 Topple 0.4.0 64-bit 4CPU2691+107−12124.1%+183.927.6%29
55.8%
59RedQueen 1.1.98 64-bit 4CPU2682+27−2839.5%+80.727.8%474
51.7%
60Hamsters 0.7.1 4CPU2681+36−3556.7%−45.138.6%254
57.0%
61ECE X3 64-bit 4CPU2677+23−2441.8%+65.924.3%674
60.4%
62Pharaon 3.5.1 4CPU2673+26−2643.6%+41.329.7%518
67.1%
63Jellyfish 1.1 64-bit 4CPU2663+33−3357.3%−52.132.9%316
53.9%
 RedQueen 1.1.97 64-bit 4CPU2661+22−2245.7%+27.333.3%726
73.4%
64Arminius 2015-08-06 64-bit 4CPU2649+33−3344.2%+38.336.1%302
52.6%
 Gaviota 0.83 64-bit 4CPU2648+25−2547.3%+20.427.9%566
49.1%
65Ghost 3.1 64-bit 4CPU2648+31−3154.4%−29.029.1%361
99.6%
66Fridolin 2.00 64-bit 4CPU2588+34−3441.9%+57.631.3%297
92.7%
67Delphil 3.2 64-bit 4CPU2555+32−3240.0%+73.130.6%340
54.5%
68Jazz 840 64-bit 4CPU2552+20−2058.6%−70.125.3%968
82.4%
69Nemeton 1.8 4CPU2536+28−2852.3%−16.528.2%464
91.7%
70Jumbo 0.6.66 64-bit 4CPU2509+28−2850.0%−1.133.0%433
88.5%
71Myrddin 0.87 64-bit 4CPU2482+35−3538.9%+81.128.4%296
86.0%
 Invictus r228 64-bit 4CPU2339+242−29628.6%+166.90.0%7
 

Results matrix

Free 4-CPU engines (best versions only), top 12
#NameElo1
Stock
2
Fire
3
Komod
4
Ether
5
Fizbo
6
Andsc
7
Booot
8
Xipho
9
Laser
10
Schoo
11
Houdi
12
Gull
1Stockfish 10 64-bit 4CPU3463 37.5 − 10.5
+27−0=21
+35		 33.5 − 14.5
+19−0=29
−51		44.5 − 11.5
+34−1=21
+11		35 − 9
+26−0=18
−7		33.5 − 10.5
+24−1=19
−35		38.5 − 5.5
+33−0=11
+77		36.5 − 7.5
+29−0=15
−16		   
2Fire 7.1 64-bit 4CPU331910.5 − 37.5
+0−27=21
−35		  20 − 12
+9−1=22
+46		22 − 18
+10−6=24
−14		21 − 12
+13−4=16
+26		21.5 − 10.5
+12−1=19
+40		17.5 − 14.5
+4−1=27
−44		23 − 9
+15−1=16
+31		  27 − 13
+15−1=24
−40
3Komodo 9 64-bit 4CPU3308           19.5 − 10.5
+9−0=21
−49
4Ethereal 11.00 64-bit 4CPU329814.5 − 33.5
+0−19=29
+51		12 − 20
+1−9=22
−46		  19.5 − 12.5
+8−1=23
+35		19.5 − 14.5
+11−6=17
+7		16 − 16
+1−1=30
−36		17.5 − 14.5
+4−1=27
−22		20.5 − 11.5
+10−1=21
−1		21 − 11
+11−1=20
−13		  
5Fizbo 2 64-bit 4CPU327711.5 − 44.5
+1−34=21
−11		18 − 22
+6−10=24
+14		 12.5 − 19.5
+1−8=23
−35		 16 − 18
+4−6=24
−30		19 − 13
+10−4=18
+39		16.5 − 15.5
+5−4=23
−16		20 − 12
+13−5=14
+21		18 − 15
+8−5=20
−50		 23 − 9
+15−1=16
+36
6Andscacs 0.94 64-bit 4CPU32649 − 35
+0−26=18
+7		12 − 21
+4−13=16
−26		 14.5 − 19.5
+6−11=17
−7		18 − 16
+6−4=24
+30		 20 − 17
+7−4=26
+21		19 − 15
+6−2=26
+18		22 − 12
+12−2=20
+38		19 − 13
+7−1=24
−15		  
7Booot 6.3.1 64-bit 4CPU326210.5 − 33.5
+1−24=19
+35		10.5 − 21.5
+1−12=19
−40		 16 − 16
+1−1=30
+36		13 − 19
+4−10=18
−39		17 − 20
+4−7=26
−21		 16 − 16
+6−6=20
−12		18.5 − 13.5
+8−3=21
+1		19.5 − 12.5
+10−3=19
+1		  
8Xiphos 0.4 64-bit 4CPU32525.5 − 38.5
+0−33=11
−77		14.5 − 17.5
+1−4=27
+44		 14.5 − 17.5
+1−4=27
+22		15.5 − 16.5
+4−5=23
+16		15 − 19
+2−6=26
−18		16 − 16
+6−6=20
+12		 18.5 − 14.5
+8−4=21
−2		26.5 − 16.5
+12−2=29
+15		5.5 − 4.5
+2−1=7
−34		 
9Laser 1.6 64-bit 4CPU32187.5 − 36.5
+0−29=15
+16		9 − 23
+1−15=16
−31		 11.5 − 20.5
+1−10=21
+1		12 − 20
+5−13=14
−21		12 − 22
+2−12=20
−38		13.5 − 18.5
+3−8=21
−1		14.5 − 18.5
+4−8=21
+2		 26 − 18
+11−3=30
+30		0.5 − 1.5
+0−1=1
−189		19 − 13
+8−2=22
+13
10Schooner 2.0.34 64-bit 4CPU3201   11 − 21
+1−11=20
+13		15 − 18
+5−8=20
+50		13 − 19
+1−7=24
+15		12.5 − 19.5
+3−10=19
−1		16.5 − 26.5
+2−12=29
−15		18 − 26
+3−11=30
−30		 4.5 − 5.5
+2−3=5
−46		 
11Houdini 1.5a 64-bit 4CPU3186       4.5 − 5.5
+1−2=7
+34		1.5 − 0.5
+1−0=1
+189		5.5 − 4.5
+3−2=5
+46		  
12Gull 3 64-bit 4CPU3180 13 − 27
+1−15=24
+40		10.5 − 19.5
+0−9=21
+49		 9 − 23
+1−15=16
−36		   13 − 19
+2−8=22
−13		   
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
Fir
3
Kom
4
Eth
5
Fiz
6
And
7
Boo
8
Xip
9
Las
10
Sch
11
Hou
12
Gul
1Stockfish 10 64-bit 4CPU3463 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Fire 7.1 64-bit 4CPU33190.0 79.494.8100.0100.0100.0100.0100.0100.0100.0100.0
3Komodo 9 64-bit 4CPU33080.020.6 74.299.199.999.9100.0100.0100.0100.0100.0
4Ethereal 11.00 64-bit 4CPU32980.05.225.8 95.699.599.6100.0100.0100.0100.0100.0
5Fizbo 2 64-bit 4CPU32770.00.00.94.4 87.789.698.4100.0100.0100.0100.0
6Andscacs 0.94 64-bit 4CPU32640.00.00.10.512.3 54.281.8100.0100.0100.0100.0
7Booot 6.3.1 64-bit 4CPU32620.00.00.10.410.445.8 78.5100.0100.0100.0100.0
8Xiphos 0.4 64-bit 4CPU32520.00.00.00.01.618.221.5 99.7100.0100.0100.0
9Laser 1.6 64-bit 4CPU32180.00.00.00.00.00.00.00.3 88.899.1100.0
10Schooner 2.0.34 64-bit 4CPU32010.00.00.00.00.00.00.00.011.2 84.695.4
11Houdini 1.5a 64-bit 4CPU31860.00.00.00.00.00.00.00.00.915.4 69.8
12Gull 3 64-bit 4CPU31800.00.00.00.00.00.00.00.00.04.630.1 
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

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
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Reference rating list:
Recalibrate:
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  Recalibrate current list to reference using all common engines

Created in 2005-2013 by CCRL team
Last games added on March 16, 2019