CCRL 40/15
Downloads and Statistics
January 11, 2020
Testing summary:
Total: 1'112'746 games
played by 2'593 programs

White wins: 385'288 (34.6%)
Black wins: 285'975 (25.7%)
Draws: 441'483 (39.7%)
White score: 54.5%

Open source 32-bit single-CPU engines

Comparing 344 engines!
95 best versions of selected engines played 3480 games with each other

CCRL 40/15 Rating List — Open source 32-bit single-CPU engines (Quote)

Ponder off, General book (up to 12 moves), 3-4-5 piece EGTB
Time control: Equivalent to 40 moves in 15 minutes on an Intel i7-4770k.
Computed on January 11, 2020 with Bayeselo based on 1'112'746 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+
1Lc0 0.22.0 T40B.4-160 GTX10503464+24−2463.0%−79.164.2%486 
87.3%
 Lc0 0.21.2 w42716 GTX10503442+29−2964.7%−88.759.8%336
100.0%
2ChessBrainVB 3.743070+20−2050.3%−3.049.0%770
71.3%
 ChessBrainVB 3.723063+15−1551.2%−10.343.6%1423
86.6%
3Stockfish 2.2.2 32-bit3051+14−1461.4%−74.148.4%1619
56.8%
 Sting SF 4.63048+30−3045.4%+28.947.0%334
56.5%
 ChessBrainVB 3.703045+23−2351.1%−10.348.1%551
61.5%
 Stockfish 2.3.1 32-bit3041+17−1757.2%−45.150.5%1095
61.9%
 ChessBrainVB 3.663036+23−2351.5%−9.751.2%568
67.8%
 Sting SF 4.73029+22−2244.5%+32.650.5%632
50.6%
 Stockfish 2.1.1 32-bit3029+16−1663.8%−92.943.0%1362
56.5%
 ChessBrainVB 3.683026+21−2150.1%−0.854.3%654
56.6%
4IvanHoe 9.46h 32-bit3024+13−1455.8%−37.253.6%1668
84.5%
 Stockfish 2.0.1 32-bit3013+17−1765.3%−99.946.2%1122
77.6%
 Sting SF 2 32-bit3004+17−1751.3%−9.851.2%1062
57.2%
 Stockfish 1.9.1 32-bit3002+16−1665.7%−102.047.0%1208
85.3%
 Stockfish 1.8 32-bit2989+17−1766.6%−105.047.5%1064
51.0%
 ChessBrainVB 3.612988+27−2749.3%+4.547.7%421
63.3%
5Gull II b2 32-bit2983+18−1746.8%+18.852.6%960
56.6%
 ChessBrainVB 3.502980+23−2352.4%−15.546.7%553
53.4%
 Gull II 32-bit2979+18−1846.0%+22.457.1%854
51.1%
 Stockfish 1.7.1 32-bit2979+17−1666.4%−108.145.7%1220
97.5%
6Protector 1.5.0 32-bit2949+25−2545.2%+27.251.7%470
82.0%
 Stockfish 1.6.3 32-bit2934+17−1761.2%−70.448.1%1118
88.7%
 ChessBrainVB 3.312916+25−2552.6%−14.545.1%503
98.2%
 Gull 1.0a 32-bit2886+12−1245.7%+30.143.8%2262
79.5%
 Protector 1.4.0 32-bit2879+11−1145.5%+30.941.0%2776
57.4%
 Gull 1.1 32-bit2878+17−1747.4%+15.948.9%1051
51.3%
 Gull 1.2 32-bit2877+12−1245.6%+30.242.6%2306
57.7%
 ChessBrainVB 3.202874+25−2550.3%−2.147.4%489
58.6%
 Gull 0.12a 32-bit2871+21−2149.4%+2.944.8%717
66.9%
 Stockfish 1.5.1 32-bit2865+15−1555.1%−32.943.1%1506
90.1%
7Toga II 3.02851+16−1648.1%+11.142.9%1311
59.5%
 Gull 0.11a 32-bit2848+20−2146.8%+17.846.8%722
62.0%
8Booot 5.1.02844+10−1045.7%+30.041.4%3391
94.0%
 Protector 1.3.5 32-bit2831+15−1545.6%+27.845.9%1493
51.2%
9MinkoChess 1.3 32-bit2830+31−3146.0%+25.345.5%314
49.2%
 Stockfish 1.4 32-bit2830+16−1653.8%−24.248.9%1142
58.4%
 Cyclone xTreme Fury2828+19−1948.1%+10.648.8%811
53.6%
 Grapefruit 1.0 32-bit2827+9−948.4%+10.247.7%3991
48.6%
 Toga II 1.4.1SE2827+12−1250.0%+1.943.5%2395
55.5%
 Booot 5.02826+15−1545.2%+29.143.5%1342
52.5%
 Protector 1.3.4 32-bit2825+15−1545.6%+28.646.2%1356
52.5%
 Cyclone xTreme2824+13−1344.2%+38.445.8%2009
54.3%
 Cyclone 3.42823+21−2151.5%−8.747.2%685
51.2%
 ChessBrainVB 3.032822+25−2549.9%−1.540.8%512
52.9%
 Cyclone xTreme Rage2821+25−2548.4%+9.546.8%476
49.9%
 Toga II 1.4.1SE62821+23−2350.4%+0.445.1%567
63.3%
 Toga II 3.1.2SE2816+17−1752.9%−19.443.6%1051
52.2%
 Cyclone 2.22815+28−2849.1%+5.747.4%382
68.8%
 TheMadPrune 1.1.252806+24−2451.4%−9.948.0%504
53.6%
 Toga II 1.4 beta5c2804+24−2453.2%−20.546.2%558
54.8%
 Protector 1.3.1b 32-bit2802+23−2348.8%+9.343.6%608
65.1%
 Protector 1.3.2 32-bit2796+21−2145.7%+26.050.4%659
56.0%
 Stockfish 1.3.1 32-bit2794+25−2546.1%+24.741.4%512
60.8%
 Toga II 1.3.12790+11−1250.0%−1.242.1%2565
65.8%
 Grapefruit 1.0a32783+31−3248.1%+11.141.6%315
49.9%
 MinkoChess 1.2 32-bit2783+14−1445.6%+30.440.7%1765
53.6%
 Cyclone 1.02781+32−3251.0%−7.139.3%300
50.5%
 Stockfish 1.2 Default2781+21−2146.1%+23.744.5%679
77.3%
 Toga II 1.3.42768+28−2852.9%−18.942.1%411
54.7%
10Glaurung 2.1 32-bit2766+18−1846.3%+24.639.5%1067
50.6%
11Texel 1.01 32-bit2765+28−2852.2%−18.135.0%432
64.0%
 Toga II 1.2.1a 32-bit2760+12−1250.5%−6.939.2%2354
61.5%
 Glaurung 2.2 32-bit2756+24−2446.0%+24.541.4%565
64.2%
12Scorpio 2.7 32-bit2750+20−2049.0%+8.936.2%826
55.4%
 Stockfish 1.012747+31−3150.5%−5.243.8%322
55.0%
 MinkoChess 1.0 32-bit2745+32−3249.8%+1.241.1%314
56.6%
 MinkoChess 1.1 32-bit2741+27−2745.7%+26.540.9%455
55.6%
 Glaurung 2.0.1 32-bit2739+17−1747.2%+16.540.6%1196
58.3%
 Toga II 1.2 32-bit2736+25−2552.4%−19.137.2%511
55.6%
13Crafty 23.4 32-bit2733+20−1950.8%−4.940.4%861
55.8%
 Toga II 1.1a 32-bit2731+16−1652.8%−18.338.9%1275
60.5%
14Bison 9.11 32-bit2729+14−1448.5%+9.637.2%1810
74.9%
 Crafty 23.3 32-bit2717+32−3250.5%−4.741.4%309
68.8%
15Critter 0.42 32-bit2707+25−2551.9%−13.341.1%494
67.6%
 Booot 4.15.12697+30−3046.1%+24.242.1%359
50.0%
 DanaSah 8.32697+69−6859.7%−63.751.6%62
50.2%
 Glaurung 2 epsilon/5 32-bit2697+27−2748.1%+11.035.8%441
51.6%
 Crafty 23.2 32-bit2696+32−3247.8%+16.240.0%320
51.8%
 Fruit 2.12695+25−2551.5%−13.337.2%522
54.5%
 Booot 4.15.02694+14−1445.9%+26.244.9%1651
48.9%
 Scorpio 2.6 32-bit2694+31−3148.9%+7.741.7%321
54.0%
16Vajolet 2.482692+31−3148.9%+5.233.9%348
59.1%
 Crafty 23.1 32-bit2688+18−1846.2%+24.342.2%970
54.5%
17Bobcat 3.25 32-bit2686+31−3146.9%+22.232.2%351
65.0%
18K2 0.952678+21−2148.1%+13.132.4%747
56.9%
 MinkoChess 0.8 32-bit2675+33−3351.3%−13.441.5%301
60.2%
 ChessBrainVB 2.052669+23−2349.6%+1.836.1%609
52.1%
19Daydreamer 1.75 32-bit2669+17−1747.7%+14.041.2%1157
50.0%
 Glaurung 1.2.1 Avalanche 32-bit2669+32−3252.1%−17.035.4%328
49.2%
 Scorpio 1.92669+30−3050.1%−3.634.0%362
52.4%
 Scorpio 1.842668+32−3247.2%+8.829.9%354
51.4%
 Booot 4.14.02667+20−2051.4%−9.741.8%765
57.0%
 Glaurung 1.2.1 Crusader 32-bit2664+32−3251.6%−14.928.6%343
48.9%
 Scorpio 2.5 32-bit2664+32−3249.5%+4.342.3%307
56.2%
 Scorpio 1.912661+14−1445.5%+30.636.7%1881
51.3%
 Vajolet 2.032661+24−2451.2%−11.433.8%562
52.5%
 Bobcat 2.75 32-bit2660+24−2447.7%+15.036.9%558
58.7%
 Scorpio 2.02b2656+30−3047.3%+16.937.2%355
50.6%
 Glaurung 1.2.1 32-bit2655+16−1746.4%+24.033.6%1265
56.6%
 Scorpio 2.0 32-bit2653+17−1745.9%+29.834.1%1256
51.5%
 Scorpio 2.1 32-bit2653+34−3449.1%+4.438.2%280
57.5%
20Cyrano 0.6b17 32-bit2649+14−1448.6%+8.640.7%1623
60.0%
 Scorpio 1.812644+34−3449.8%+5.731.4%299
57.0%
 Scorpio 1.82641+19−2047.3%+18.435.7%869
52.5%
21DanaSah 7.32640+14−1449.4%+4.834.8%1709
56.2%
22RedQueen 1.0.0 32-bit2638+24−2451.6%−8.035.9%576
52.2%
23Nawito 19062637+26−2650.8%−3.736.3%471
50.1%
 Scorpio 2.05b2637+32−3250.5%−2.440.8%306
50.6%
 DanaSah 7.92636+20−2049.2%+5.227.3%944
54.6%
 Glaurung 1.0.2 32-bit2635+17−1747.4%+19.832.0%1209
59.6%
 Crafty 23.0 32-bit2631+29−2949.9%+1.041.3%380
51.1%
24Cheng3 1.07 32-bit2630+26−2646.6%+22.731.7%517
52.8%
25Delfi 5.12629+25−2646.3%+23.533.9%522
54.6%
 Glaurung 1.1 32-bit2626+33−3348.8%+10.832.1%324
54.9%
26Arasan 13.4 32-bit2624+30−3049.7%+1.134.8%374
57.6%
 Bison 9.62620+23−2351.3%−13.733.9%635
52.0%
27Phalanx XXV2619+15−1549.6%+2.332.4%1493
54.2%
 DanaSah 7.02618+26−2651.3%−10.437.8%479
50.9%
 Arasan 14.1 32-bit2617+33−3349.0%+4.733.3%309
51.1%
 Bison 9.8 32-bit2616+32−3349.8%−0.533.7%309
50.0%
28Caligula 0.9g2616+22−2254.9%−35.729.1%700
51.5%
 K2 0.912616+15−1549.0%+6.932.9%1497
65.6%
 Arasan 13.2 32-bit2609+32−3251.0%−6.238.5%312
57.0%
 DanaSah 6.502605+22−2249.7%+1.036.0%691
51.6%
 Scorpio 1.72604+32−3249.7%+0.438.1%310
54.0%
 DanaSah 6.802602+27−2850.5%−2.140.3%412
56.1%
 Delfi 5.02600+20−2047.5%+14.837.1%805
49.8%
29Sloppy 0.2.2 32-bit2600+14−1448.1%+11.837.8%1775
53.8%
 Nawito 18122598+20−2048.3%+12.433.0%892
54.2%
 Crafty 22.8 32-bit2596+32−3248.7%+7.335.9%315
58.2%
30CuckooChess 1.12 32-bit2592+25−2548.8%+9.229.8%531
59.4%
 Booot 4.13.12588+28−2849.4%+1.239.9%404
52.8%
 RedQueen 1.1.1 32-bit2586+32−3350.6%−0.435.7%308
51.8%
31Betsabe II 1.962585+25−2551.1%−5.827.0%564
51.6%
 Nawito 1.1d2584+28−2850.2%−2.236.7%401
52.4%
 K2 0.872583+18−1749.0%+6.134.7%1102
55.6%
 Crafty 22.4 32-bit2581+32−3248.1%+11.337.7%318
54.1%
 Arasan 13.1 32-bit2578+32−3247.9%+14.637.5%312
51.8%
 RedQueen 0.9.8 32-bit2577+22−2249.6%+5.627.7%730
53.9%
 Cheng3 1.04 32-bit2576+32−3250.2%−2.234.0%326
58.6%
 Bobcat 20110414 32-bit2571+31−3149.4%+2.041.5%325
52.0%
 DanaSah 5.072570+17−1749.9%−1.237.2%1191
48.5%
 Scorpio 2.2 32-bit2570+28−2847.1%+20.735.3%417
56.4%
32Brutus 8.05 32-bit2568+17−1749.1%+3.636.8%1142
51.4%
 Cyrano 0.52567+32−3150.5%−2.735.9%326
52.0%
 CuckooChess 1.11 32-bit2566+29−2950.4%−3.034.1%384
51.5%
 Arasan 12.3 32-bit2565+24−2446.8%+23.830.0%597
52.1%
 Cheng3 1.06 32-bit2564+30−3047.3%+16.035.9%357
53.2%
 Bobcat 20110220 32-bit2562+32−3248.7%+8.135.0%311
54.3%
 Cheng3 1.05 32-bit2560+32−3248.0%+14.433.6%324
51.5%
 Arasan 11.7 32-bit2559+32−3249.2%+6.036.0%308
55.8%
 DanaSah 4.882556+22−2250.5%−3.533.9%676
58.7%
 DanaSah 5.002552+29−2948.5%+8.932.2%395
53.5%
 Crafty 21.6 32-bit2550+34−3447.8%+12.930.1%302
61.8%
 Betsabe II 1.842544+14−1448.3%+13.925.6%1851
53.5%
 Crafty 21.5 32-bit2542+32−3248.3%+13.928.5%344
51.0%
 DanaSah 4.662542+26−2648.1%+11.535.2%475
52.4%
 DanaSah 4.602541+25−2548.5%+10.335.1%513
50.2%
33Tucano 1.042541+30−3047.2%+17.136.5%359
53.2%
34Rodent 0.102539+33−3351.1%−10.231.9%313
51.6%
 Crafty 22.0 32-bit2538+33−3348.5%+10.131.9%304
51.5%
 Phalanx XXIV2537+20−2048.7%+7.827.3%887
56.1%
 Caligula 0.82535+19−1949.1%+6.826.3%938
53.8%
 Arasan 11.6 32-bit2533+33−3351.8%−12.332.6%304
49.6%
 K2 0.832533+27−2751.7%−11.933.3%474
53.6%
 Arasan 12.1 32-bit2531+33−3251.4%−11.527.3%326
50.2%
 CuckooChess 1.102531+31−3151.5%−11.334.5%330
58.2%
 DanaSah 4.242528+17−1751.5%−11.036.9%1128
68.0%
35EXchess 6.10b 32-bit2519+32−3349.4%+3.432.5%314
53.1%
 Crafty 20.14 32-bit2517+27−2747.4%+19.833.4%482
53.8%
 Brutus 7.02b2515+19−1852.0%−15.535.4%994
53.8%
 DanaSah 4.452514+29−2949.9%+1.338.4%378
48.8%
 DanaSah 5.062514+32−3249.5%+1.935.1%319
56.1%
 Arasan 10.0 32-bit2511+33−3349.0%+6.028.8%309
51.0%
 Crafty 20.13 32-bit2510+33−3348.7%+9.933.3%312
51.8%
 CuckooChess 1.092509+33−3351.6%−12.826.8%317
52.5%
 Betsabe II 1.752508+22−2251.8%−14.723.3%730
56.0%
 DanaSah 4.372505+32−3249.7%+1.838.3%321
55.1%
 Crafty 20.11 32-bit2502+33−3349.8%+3.530.0%307
49.2%
36Pawny 0.3.1 32-bit2502+33−3348.9%+8.528.7%310
52.7%
 Arasan 11.3 32-bit2501+33−3448.7%+7.730.9%301
58.9%
 Arasan 10.32496+24−2445.6%+32.130.6%634
51.8%
 Cheng3 1.03 32-bit2495+33−3350.6%−5.630.8%318
51.8%
37GreKo 9.2 32-bit2494+33−3349.7%+1.832.9%304
54.2%
 K2 0.752492+23−2352.4%−18.932.8%634
57.9%
 Arasan 11.4 32-bit2488+33−3449.0%+7.728.5%305
49.9%
38DoubleCheck 3.1 32-bit2488+34−3451.0%−8.424.8%306
50.7%
 GreKo 8.2 32-bit2487+26−2649.1%+5.833.8%506
60.1%
 Arasan 10.2 32-bit2483+25−2545.4%+35.027.8%594
51.5%
39Pepito 1.59 32-bit2482+24−2449.6%+1.234.0%583
59.5%
40BBChess 1.3b2478+24−2450.2%−1.338.7%555
60.7%
 BBChess 1.3a2473+25−2551.6%−12.530.5%528
54.2%
 Arasan 10.42471+20−2145.5%+32.630.0%850
54.2%
41Counter 1.22470+17−1748.2%+12.738.5%1139
53.9%
42Nemeton 1.812468+25−2546.8%+20.735.1%519
62.1%
 Betsabe II 1.662463+22−2246.7%+24.228.4%718
52.2%
43Carballo 1.32462+25−2547.4%+17.931.0%561
51.8%
 Pawny 0.3 32-bit2461+33−3349.2%+3.734.3%303
53.0%
 Carballo 1.22459+23−2353.4%−21.829.6%642
51.5%
 Nemeton 1.82459+17−1751.9%−15.427.3%1250
55.9%
 Counter 1.12457+23−2350.8%−8.437.7%632
60.0%
 Nemeton 1.512453+22−2249.8%−0.928.8%732
53.4%
 Cyrano 0.32451+34−3449.2%+4.523.8%311
51.3%
 GreKo 8.0 32-bit2450+29−2950.6%−3.629.7%411
56.4%
 Arasan 9.52446+36−3647.3%+17.223.7%291
56.2%
 Betsabe II 1.472443+20−2049.9%+2.125.3%902
49.6%
44Typhoon 1.00-3482443+33−3348.5%+11.629.2%325
52.1%
 Cheng3 1.02b2442+33−3350.2%−4.230.4%312
52.4%
 Arasan 10.12441+27−2746.0%+34.428.7%494
52.2%
 K2 0.792439+29−2947.4%+19.430.6%402
51.0%
 Nemeton 1.62439+24−2446.4%+25.031.8%604
58.2%
 Critter 0.382435+32−3251.1%−9.133.4%320
49.7%
 Typhoon 1.00-3582435+17−1748.2%+11.731.1%1220
54.1%
45Murka 2 32-bit2433+30−3047.4%+18.526.3%400
57.2%
 GreKo 7.2 32-bit2429+33−3348.4%+9.735.5%304
51.1%
 DanaSah 3.632428+27−2748.4%+10.832.3%477
53.3%
 Arasan 9.22427+34−3446.1%+27.430.9%304
54.6%
 Nemeton 1.612424+28−2847.3%+17.932.3%421
56.2%
 DanaSah 2.852420+33−3349.0%+9.033.8%305
52.5%
46Kiwi 0.6d 32-bit2419+19−1948.3%+10.327.0%975
49.5%
 Nemeton 1.72419+18−1849.6%+1.125.2%1141
53.2%
 K2 0.712418+28−2851.4%−9.527.6%439
58.8%
 Pawny 0.2.2 32-bit2413+34−3448.8%+8.928.6%301
52.1%
47Diablo 0.5.12412+18−1848.8%+8.132.4%1082
52.5%
 Typhoon 1.00-3142411+34−3450.2%−0.323.0%305
56.1%
48RomiChess P3k 32-bit2408+19−1949.2%+5.033.0%906
61.8%
49Amy 0.87b2403+24−2449.4%+6.825.7%610
49.4%
 Pawny 0.2.1 32-bit2403+31−3147.1%+20.225.5%373
51.5%
 Cyrano 0.2f2402+32−3348.4%+14.432.9%316
52.7%
 Pawny 0.2 32-bit2401+29−2949.2%+5.330.8%396
56.3%
50Simplex 0.9.8 32-bit2397+30−3149.0%+5.831.2%359
57.0%
 Phalanx XXII2394+24−2450.1%−1.323.5%595
69.0%
 DoubleCheck 2.5.4 32-bit2383+33−3350.5%−3.128.6%318
51.3%
 RomiChess P3L 32-bit2383+33−3346.3%+28.233.4%314
57.0%
51Thor's Hammer 2.28 32-bit2379+22−2348.0%+14.329.1%690
51.5%
 GreKo 6.302378+33−3348.0%+14.031.6%307
56.8%
 Carballo 1.1.12374+32−3247.5%+19.627.4%340
52.7%
 Counter 1.02373+32−3250.3%−4.135.3%312
50.6%
 Typhoon 1.00-2852372+34−3449.5%+2.920.1%314
52.1%
 GreKo 7.02371+28−2846.3%+28.927.8%454
49.6%
52Ifrit m1.5 32-bit2371+27−2746.6%+24.929.1%453
55.2%
 GreKo 6.252368+33−3348.5%+9.931.5%308
57.8%
 GreKo 6.52364+26−2648.9%+7.731.5%495
49.8%
 Phalanx XXIII2364+32−3246.3%+24.324.8%351
68.7%
 K2 0.672355+23−2352.7%−17.829.7%677
48.5%
 Nemeton 1.412355+25−2547.6%+19.033.7%514
53.1%
 Nemeton 1.32354+31−3152.1%−17.733.5%340
51.8%
 Counter 0.82353+32−3248.6%+10.635.6%312
56.4%
 GreKo 5.92350+24−2446.4%+27.429.3%621
60.6%
 Ifrit m1.6 32-bit2344+32−3247.5%+14.935.0%314
53.9%
53Xpdnt 0907042342+33−3351.8%−13.829.0%314
61.6%
 Daydreamer 1.52336+22−2252.1%−18.934.3%722
60.6%
 Nemeton 1.12331+29−2947.5%+16.731.3%393
55.5%
54Amundsen 0.802328+17−1749.1%+7.329.2%1269
60.1%
 Simplex 0.9.7 32-bit2324+31−3148.6%+9.525.4%370
70.5%
 GreKo 5.52311+33−3350.7%−5.133.1%305
54.1%
 Nemeton 1.22309+26−2646.3%+23.728.7%516
62.8%
 Brutus 6.12302+34−3448.4%+8.125.0%312
49.6%
55Natwarlal 0.142302+19−1949.1%+6.625.2%1027
53.3%
 Xpdnt 0809272301+29−2951.2%−8.724.8%428
64.2%
 Nemeton 1.02293+30−3052.6%−18.227.4%383
50.1%
 Pawny 0.1.62293+33−3352.1%−15.624.4%328
50.7%
 Natwarlal 0.122292+34−3449.4%+7.926.6%308
70.8%
 Brutus 5.42279+34−3450.7%−4.029.1%302
54.1%
 GreKo 5.2.52277+35−3550.9%−8.727.0%289
79.0%
56Sungorus 1.4 32-bit2260+21−2148.2%+12.326.5%820
60.1%
 Sungorus 1.3 32-bit2255+34−3452.7%−16.624.3%301
54.0%
57RattateChess 1.0 Nosferatu2253+19−1950.0%+0.127.9%1012
52.7%
 Brutus 6.02251+35−3548.8%+6.022.6%301
52.0%
 EXchess 5.01b 32-bit2250+29−2946.5%+21.631.2%401
74.3%
58Feuerstein 0.4.6.12239+19−1949.1%+5.528.5%944
53.5%
 Betsabe II 1.08c2237+35−3549.2%+7.921.0%300
71.9%
 Vajolet 1.62.12222+34−3447.7%+12.728.4%310
55.8%
59Bagatur 1.2d 32-bit2219+34−3446.8%+19.727.2%298
54.4%
60Beowulf 2.4a 32-bit2217+19−1953.5%−27.825.1%964
63.5%
61ZCT 0.3.24512211+27−2749.4%+3.625.5%478
52.5%
 Betsabe II 1.09c2209+34−3448.2%+12.219.8%308
56.8%
62Jazz 501 32-bit2205+29−2952.5%−17.628.5%418
54.8%
63MORA 1.0.02203+29−2853.1%−22.527.7%430
53.3%
 RattateChess Bologna 20072201+25−2551.3%−9.525.0%588
62.2%
 Carballo 0.82196+22−2247.2%+19.030.6%706
50.7%
 Jazz 444 32-bit2196+32−3250.3%−3.725.2%353
62.5%
 Amundsen 0.65.12188+34−3448.7%+7.723.9%305
50.5%
 Feuerstein 0.4.5.22188+37−3749.2%+8.324.7%255
49.4%
 K2 0.572188+33−3347.0%+22.225.8%314
67.7%
 RedQueen 0.62177+30−3046.1%+28.019.9%418
54.3%
 Feuerstein 0.4.62175+38−3850.6%−2.218.5%259
51.7%
 Sungorus 1.22174+26−2652.4%−18.028.7%499
56.7%
 Pawny 0.132170+32−3252.2%−17.220.1%363
59.9%
 Simplex 0.9.3 32-bit2164+34−3448.9%+8.824.8%315
58.1%
 Betsabe II 1.052159+34−3445.2%+33.524.2%314
53.6%
64OliThink 5.1.92157+30−3046.6%+27.821.3%417
51.2%
 Bagatur 1.2b 32-bit2156+33−3446.2%+28.729.1%306
50.0%
65Chesley r323 32-bit2156+24−2549.0%+8.421.0%625
62.5%
 Ifrit j4.32151+28−2845.9%+27.729.5%440
68.7%
 K2 0.43f2140+33−3348.2%+11.521.3%338
54.4%
66Prophet 2.0 32-bit2138+19−1949.3%+4.224.0%1025
55.3%
67Parrot 07.07.222136+19−1947.3%+19.723.0%1047
51.6%
 Parrot 07.01.162135+31−3146.6%+26.021.1%394
68.7%
 Ifrit j4.22124+34−3445.5%+31.026.4%303
64.4%
 DoubleCheck 2.1 32-bit2115+32−3346.3%+30.621.8%362
50.9%
 MORA 1.1.02114+98−10338.9%+76.316.7%36
50.8%
68ChessKISS 1.3a 32-bit2112+32−3347.0%+19.030.3%320
78.1%
 Carballo 0.52097+23−2347.1%+19.921.9%694
80.9%
69AdroitChess 0.42082+23−2357.6%−69.315.1%800
53.6%
 Feuerstein 0.4.5.12080+38−3848.0%+12.525.8%248
49.1%
 Ifrit j2.92080+34−3448.2%+12.221.3%314
90.6%
 ZCT 0.3.25002049+32−3246.2%+30.016.8%381
54.2%
70PLP 16615712047+22−2246.1%+28.124.3%760
58.2%
71Jabba 1.0 32-bit2044+21−2144.8%+38.625.0%839
86.0%
72Faile 1.4.42027+23−2355.2%−28.622.1%774
53.0%
73Slibo 0.5.12025+26−2645.5%+33.919.4%573
91.4%
74BibiChess 0.52000+24−2445.7%+32.126.5%607
61.0%
75Cupcake 1.01995+30−3145.5%+31.322.7%401
55.0%
76Schola 1.1.0 32-bit1992+26−2745.6%+32.825.1%514
67.9%
 AdroitChess 0.31984+25−2544.2%+45.918.5%626
85.2%
77Dabbaba 5.671965+25−2545.5%+33.226.4%557
66.1%
78Sissa 2.01958+23−2353.1%−23.330.1%678
55.2%
79Monik 2.2.3 32-bit1955+30−3044.4%+39.227.1%395
51.1%
 Feuerstein 0.4.4.21954+28−2941.2%+92.418.7%518
53.2%
80Wowl 1.3.81953+26−2745.4%+35.013.3%573
53.8%
81Smash 1.0.31951+26−2740.8%+74.217.8%574
69.1%
82Micro-Max 4.8 (DM-PII)1943+20−2048.3%+12.126.1%865
58.2%
 Dabbaba 6.521939+22−2248.6%+11.520.3%777
64.0%
83Eia 0.31934+20−2047.1%+22.324.4%914
71.3%
 Wowl 1.3.71925+25−2546.8%+24.411.7%630
76.1%
 Carballo 0.41910+32−3335.8%+103.234.8%342
55.1%
 Dabbaba 7.491907+12−1247.8%+17.419.9%3152
52.3%
 Jabba 130320121906+31−3139.1%+97.916.7%442
59.9%
84ChessterfieldCL i5a1901+24−2540.6%+74.120.4%658
68.0%
 Micro-Max 4.81892+28−2836.7%+103.124.7%493
77.9%
85CDrill 1800 build 41877+23−2441.4%+73.415.5%741
100.0%
86RataAeroespacial 0.2.11815+13−1342.5%+64.412.9%2478
100.0%
87TSCP 1.811692+19−1947.4%+21.817.0%1072
83.7%
88Spartan 1.01675+25−2563.5%−103.321.2%624
67.4%
89Philemon C1667+25−2562.3%−94.722.0%626
59.4%
90VanillaChess 2.6g1663+25−2561.5%−89.220.2%624
100.0%
91PolarChess 1.31575+25−2549.3%+3.016.9%629
57.0%
92Darky 0.5d1572+24−2443.5%+55.420.8%677
98.6%
93MSCP 1.6h1530+25−2544.0%+50.415.1%628
99.8%
94Apep 1.011479+25−2541.2%+72.710.1%683
100.0%
95BACE 0.461378+23−2421.5%+257.49.8%1027
 

Results matrix

Open source 32-bit single-CPU engines (best versions only), top 12
#NameElo123456789101112
1Lc0 0.22.0 T40B.4-160 GTX10503464            
2ChessBrainVB 3.743070            
3Stockfish 2.2.2 32-bit3051   26 − 28
+8−10=36
−38
19 − 13
+11−5=16
−13
  33 − 5
+28−0=10
+70
    
4IvanHoe 9.46h 32-bit3024  28 − 26
+10−8=36
+38
 21 − 10
+11−0=20
+54
20 − 10
+12−2=16
+22
 28.5 − 5.5
+23−0=11
+59
    
5Gull II b2 32-bit2983  13 − 19
+5−11=16
+13
10 − 21
+0−11=20
−54
        
6Protector 1.5.0 32-bit2949   10 − 20
+2−12=16
−22
        
7Toga II 3.02851       2 − 0
+2−0=0
+INF
    
8Booot 5.1.02844  5 − 33
+0−28=10
−70
5.5 − 28.5
+0−23=11
−59
  0 − 2
+0−2=0
−INF
 3.5 − 6.5
+1−4=5
−101
 6 − 0
+6−0=0
+INF
13.5 − 9.5
+9−5=9
−44
9MinkoChess 1.3 32-bit2830       6.5 − 3.5
+4−1=5
+101
  7.5 − 2.5
+6−1=3
+105
 
10Glaurung 2.1 32-bit2766            
11Texel 1.01 32-bit2765       0 − 6
+0−6=0
−INF
2.5 − 7.5
+1−6=3
−105
   
12Scorpio 2.7 32-bit2750       9.5 − 13.5
+5−9=9
+44
    
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

Open source 32-bit single-CPU engines (best versions only), top 12
#NameElo123456789101112
1Lc0 0.22.0 T40B.4-160 GTX10503464 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2ChessBrainVB 3.7430700.0 93.2100.0100.0100.0100.0100.0100.0100.0100.0100.0
3Stockfish 2.2.2 32-bit30510.06.8 99.8100.0100.0100.0100.0100.0100.0100.0100.0
4IvanHoe 9.46h 32-bit30240.00.00.2 100.0100.0100.0100.0100.0100.0100.0100.0
5Gull II b2 32-bit29830.00.00.00.0 98.6100.0100.0100.0100.0100.0100.0
6Protector 1.5.0 32-bit29490.00.00.00.01.4 100.0100.0100.0100.0100.0100.0
7Toga II 3.028510.00.00.00.00.00.0 76.488.1100.0100.0100.0
8Booot 5.1.028440.00.00.00.00.00.023.6 80.4100.0100.0100.0
9MinkoChess 1.3 32-bit28300.00.00.00.00.00.011.919.6 100.099.9100.0
10Glaurung 2.1 32-bit27660.00.00.00.00.00.00.00.00.0 50.687.2
11Texel 1.01 32-bit27650.00.00.00.00.00.00.00.00.149.3 80.9
12Scorpio 2.7 32-bit27500.00.00.00.00.00.00.00.00.012.819.1 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

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Rating list
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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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Reference rating list:
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Created in 2005-2013 by CCRL team
Last games added on January 11, 2020