CCRL 40/40
Downloads and Statistics
December 7, 2019
Testing summary:
Total: 1'104'002 games
played by 2'573 programs
150928 CPU days (X2 4600+)

White wins: 382'601 (34.7%)
Black wins: 284'129 (25.7%)
Draws: 437'272 (39.6%)
White score: 54.5%

Open source 32-bit single-CPU engines

Comparing 342 engines!
95 best versions of selected engines played 3472 games with each other

CCRL 40/40 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 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern CPU.
Computed on December 7, 2019 with Bayeselo based on 1'104'002 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 GTX10503460+27−2763.1%−79.063.1%374 
81.9%
 Lc0 0.21.2 w42716 GTX10503441+29−2964.7%−88.659.8%336
100.0%
2ChessBrainVB 3.743072+22−2250.5%−4.150.0%642
77.2%
 ChessBrainVB 3.723062+15−1551.2%−10.043.6%1423
86.9%
3Stockfish 2.2.2 32-bit3050+14−1461.4%−74.048.4%1619
56.4%
 Sting SF 4.63047+30−3045.4%+29.147.0%334
56.7%
 ChessBrainVB 3.703044+23−2351.1%−10.148.1%551
61.5%
 Stockfish 2.3.1 32-bit3040+17−1657.2%−45.050.5%1095
61.9%
 ChessBrainVB 3.663035+23−2351.5%−9.751.2%568
67.6%
 Sting SF 4.73028+22−2244.5%+32.850.5%632
50.8%
 Stockfish 2.1.1 32-bit3028+16−1563.8%−92.743.0%1362
56.5%
 ChessBrainVB 3.683025+21−2150.1%−0.754.3%654
56.9%
4IvanHoe 9.46h 32-bit3023+13−1355.8%−37.153.6%1668
84.1%
 Stockfish 2.0.1 32-bit3012+17−1765.3%−99.746.2%1122
77.9%
 Sting SF 2 32-bit3003+17−1751.3%−9.751.2%1062
57.0%
 Stockfish 1.9.1 32-bit3001+16−1665.7%−101.947.0%1208
79.6%
 ChessBrainVB 3.612988+27−2749.3%+3.647.7%421
48.4%
 Stockfish 1.8 32-bit2988+18−1766.6%−104.847.5%1064
68.7%
5Gull II b2 32-bit2982+18−1846.8%+18.952.6%960
56.4%
 ChessBrainVB 3.502980+24−2352.4%−16.246.7%553
53.5%
 Gull II 32-bit2978+18−1846.0%+22.557.1%854
51.3%
 Stockfish 1.7.1 32-bit2978+17−1766.4%−108.445.6%1214
97.4%
6Protector 1.5.0 32-bit2948+25−2545.2%+27.351.7%470
81.9%
 Stockfish 1.6.3 32-bit2934+17−1761.2%−71.248.1%1118
88.8%
 ChessBrainVB 3.312915+25−2552.6%−14.345.1%503
98.2%
 Gull 1.0a 32-bit2885+12−1245.7%+30.343.8%2262
79.8%
 Protector 1.4.0 32-bit2879+11−1145.5%+30.041.0%2776
57.1%
 Gull 1.1 32-bit2877+17−1747.4%+16.048.9%1051
51.6%
 Gull 1.2 32-bit2876+12−1245.6%+30.342.6%2306
57.3%
 ChessBrainVB 3.202874+25−2550.3%−2.947.4%489
58.6%
 Gull 0.12a 32-bit2870+21−2149.4%+3.044.8%717
66.8%
 Stockfish 1.5.1 32-bit2864+15−1555.1%−32.743.1%1506
90.1%
7Toga II 3.02850+16−1648.1%+11.342.9%1311
59.7%
 Gull 0.11a 32-bit2847+21−2146.8%+17.846.8%722
62.0%
8Booot 5.1.02844+10−1045.7%+29.241.4%3391
94.0%
 Protector 1.3.5 32-bit2830+15−1445.6%+27.845.9%1493
50.1%
 Stockfish 1.4 32-bit2830+16−1653.8%−24.948.9%1142
51.3%
9MinkoChess 1.3 32-bit2829+31−3146.0%+25.445.5%314
54.8%
 Cyclone xTreme Fury2827+19−1948.1%+10.848.8%811
53.7%
 Grapefruit 1.0 32-bit2826+9−948.4%+10.447.7%3991
48.6%
 Toga II 1.4.1SE2826+12−1250.0%+2.243.5%2395
55.7%
 Booot 5.02825+15−1545.2%+29.243.5%1342
55.1%
 Cyclone xTreme2824+13−1344.2%+37.645.8%2009
47.5%
 Protector 1.3.4 32-bit2824+15−1545.6%+28.746.2%1356
56.6%
 ChessBrainVB 3.032822+25−2549.9%−2.340.8%512
48.6%
 Cyclone 3.42822+21−2151.5%−8.447.2%685
54.5%
 Cyclone xTreme Rage2820+25−2548.4%+9.746.8%476
49.9%
 Toga II 1.4.1SE62820+23−2350.4%+0.645.1%567
63.2%
 Toga II 3.1.2SE2815+17−1752.9%−19.143.6%1051
52.4%
 Cyclone 2.22814+28−2849.1%+5.947.4%382
68.8%
 TheMadPrune 1.1.252805+24−2451.4%−9.648.0%504
53.7%
 Toga II 1.4 beta5c2803+24−2353.2%−20.446.2%558
54.7%
 Protector 1.3.1b 32-bit2802+23−2348.8%+8.443.6%608
65.1%
 Protector 1.3.2 32-bit2795+21−2145.7%+26.250.4%659
55.9%
 Stockfish 1.3.1 32-bit2793+25−2546.1%+25.141.4%512
61.0%
 Toga II 1.3.12789+12−1250.0%−1.042.1%2565
65.8%
 Grapefruit 1.0a32782+31−3248.1%+11.541.6%315
49.8%
 MinkoChess 1.2 32-bit2782+14−1445.6%+30.540.7%1765
53.5%
 Cyclone 1.02780+32−3251.0%−7.039.3%300
50.4%
 Stockfish 1.2 Default2780+21−2246.1%+24.144.5%679
77.4%
 Toga II 1.3.42767+28−2852.9%−18.642.1%411
54.8%
10Glaurung 2.1 32-bit2765+17−1846.3%+24.839.5%1067
50.6%
11Texel 1.01 32-bit2764+28−2852.2%−18.035.0%432
64.0%
 Toga II 1.2.1a 32-bit2759+12−1250.5%−6.739.2%2354
61.2%
 Glaurung 2.2 32-bit2755+24−2446.0%+25.041.4%565
64.5%
12Scorpio 2.7 32-bit2749+20−2049.0%+9.136.2%826
55.2%
 Stockfish 1.012747+31−3150.5%−5.943.8%322
55.3%
 MinkoChess 1.0 32-bit2744+32−3249.8%+1.241.1%314
56.4%
 MinkoChess 1.1 32-bit2740+27−2745.7%+26.740.9%455
55.5%
 Glaurung 2.0.1 32-bit2738+16−1747.2%+16.940.6%1196
58.2%
 Toga II 1.2 32-bit2735+25−2552.4%−18.937.2%511
55.7%
13Crafty 23.4 32-bit2733+19−1950.8%−5.840.4%861
55.3%
 Toga II 1.1a 32-bit2731+16−1652.8%−19.138.9%1275
61.0%
14Bison 9.11 32-bit2728+14−1448.5%+9.837.2%1810
74.9%
 Crafty 23.3 32-bit2716+32−3250.5%−4.641.4%309
68.7%
15Critter 0.42 32-bit2706+25−2551.9%−13.141.1%494
67.6%
 Booot 4.15.12696+30−3046.1%+24.342.1%359
50.3%
 Glaurung 2 epsilon/5 32-bit2696+27−2748.1%+11.235.8%441
51.7%
 Crafty 23.2 32-bit2695+32−3247.8%+16.440.0%320
51.8%
 Fruit 2.12695+25−2551.5%−14.237.2%522
54.6%
 Booot 4.15.02693+14−1445.9%+26.444.9%1651
48.9%
 Scorpio 2.6 32-bit2693+31−3148.9%+7.941.7%321
53.9%
16Vajolet 2.482691+31−3148.9%+5.433.9%348
59.3%
 Crafty 23.1 32-bit2687+18−1846.2%+24.542.2%970
54.3%
17Bobcat 3.25 32-bit2685+31−3146.9%+22.432.2%351
57.4%
18K2 0.952681+22−2347.7%+15.931.5%679
64.0%
 MinkoChess 0.8 32-bit2674+33−3351.3%−13.341.5%301
60.0%
 ChessBrainVB 2.052669+23−2349.6%+1.036.1%609
52.3%
19Daydreamer 1.75 32-bit2668+17−1747.7%+14.141.2%1157
49.9%
 Glaurung 1.2.1 Avalanche 32-bit2668+32−3252.1%−16.935.4%328
49.2%
 Scorpio 1.92668+30−3050.1%−3.534.0%362
52.4%
 Scorpio 1.842667+32−3247.2%+8.929.9%354
51.4%
 Booot 4.14.02666+20−2051.4%−9.541.8%765
57.0%
 Glaurung 1.2.1 Crusader 32-bit2663+32−3251.6%−14.728.6%343
48.9%
 Scorpio 2.5 32-bit2663+32−3249.5%+4.342.3%307
56.1%
 Scorpio 1.912661+13−1445.5%+29.936.7%1881
51.3%
 Vajolet 2.032660+24−2451.2%−11.233.8%562
52.7%
 Bobcat 2.75 32-bit2659+24−2447.7%+15.136.9%558
61.8%
 Glaurung 1.2.1 32-bit2655+16−1646.4%+23.233.6%1265
49.6%
 Scorpio 2.02b2655+30−3047.3%+17.037.2%355
55.1%
 Scorpio 2.0 32-bit2652+17−1745.9%+29.934.1%1256
51.4%
 Scorpio 2.1 32-bit2652+34−3449.1%+4.638.2%280
58.0%
20Cyrano 0.6b17 32-bit2648+14−1448.5%+9.240.7%1613
55.3%
 Scorpio 1.812645+35−3549.1%+11.431.5%279
53.6%
21Nawito 19062643+28−2850.0%+2.735.5%431
57.6%
 Scorpio 1.82640+20−2047.3%+18.735.7%869
52.9%
22DanaSah 7.32639+14−1449.4%+5.034.8%1709
56.2%
23RedQueen 1.0.0 32-bit2637+24−2451.6%−7.835.9%576
53.2%
 DanaSah 7.92636+19−1949.2%+4.727.3%944
49.6%
 Scorpio 2.05b2636+32−3250.5%−2.140.8%306
53.7%
 Glaurung 1.0.2 32-bit2634+17−1747.4%+20.132.0%1209
59.9%
 Crafty 23.0 32-bit2630+29−2949.9%+1.341.3%380
51.2%
24Cheng3 1.07 32-bit2629+26−2646.6%+22.831.7%517
52.4%
25Delfi 5.12628+25−2646.3%+23.933.9%522
54.7%
 Glaurung 1.1 32-bit2626+33−3348.8%+10.032.1%324
55.0%
26Arasan 13.4 32-bit2623+30−3049.7%+1.234.8%374
57.5%
 Bison 9.62619+23−2351.3%−13.533.9%635
51.7%
27Phalanx XXV2618+15−1549.6%+2.532.4%1493
55.1%
28Caligula 0.9g2617+22−2255.0%−37.729.2%698
50.0%
 DanaSah 7.02617+26−2651.3%−10.237.8%479
50.8%
 Arasan 14.1 32-bit2616+33−3349.0%+4.833.3%309
50.7%
 Bison 9.8 32-bit2616+33−3349.8%−1.233.7%309
51.6%
 K2 0.912615+15−1549.0%+7.132.9%1497
65.6%
 Arasan 13.2 32-bit2608+32−3251.0%−6.038.5%312
56.7%
 DanaSah 6.502604+22−2249.7%+1.336.0%691
51.4%
 Scorpio 1.72604+32−3249.7%−0.338.1%310
54.1%
 DanaSah 6.802601+28−2750.5%−1.940.3%412
56.2%
 Delfi 5.02599+20−2047.5%+15.037.1%805
50.0%
29Sloppy 0.2.2 32-bit2599+14−1448.1%+11.937.8%1775
57.9%
 Nawito 18122596+19−1948.2%+13.233.0%896
52.3%
 Crafty 22.8 32-bit2595+32−3248.7%+7.035.9%315
58.6%
30CuckooChess 1.12 32-bit2591+26−2648.7%+9.630.0%523
57.9%
 Booot 4.13.12587+28−2849.4%+1.439.9%404
53.4%
31Betsabe II 1.962585+26−2652.3%−13.927.3%528
49.6%
 RedQueen 1.1.1 32-bit2585+33−3350.6%−0.035.7%308
53.3%
 Nawito 1.1d2583+28−2850.2%−2.036.7%401
52.4%
 K2 0.872582+18−1849.0%+6.434.7%1102
56.6%
 Crafty 22.4 32-bit2579+32−3248.1%+12.237.4%310
54.0%
 Arasan 13.1 32-bit2577+32−3247.9%+14.337.5%312
51.0%
 RedQueen 0.9.8 32-bit2577+22−2249.6%+4.627.7%730
53.2%
 Cheng3 1.04 32-bit2575+32−3250.2%−1.834.0%326
58.5%
 Bobcat 20110414 32-bit2570+31−3149.4%+2.541.5%325
52.7%
 DanaSah 5.072569+17−1749.9%−1.037.2%1191
48.7%
 Scorpio 2.2 32-bit2569+28−2847.1%+20.835.3%417
56.4%
32Brutus 8.05 32-bit2567+17−1749.1%+3.736.8%1142
50.7%
 Cyrano 0.52566+32−3150.5%−2.435.9%326
52.5%
 CuckooChess 1.11 32-bit2565+29−2950.4%−3.034.1%384
51.8%
 Arasan 12.3 32-bit2564+24−2446.8%+23.830.0%597
52.2%
 Cheng3 1.06 32-bit2563+30−3047.3%+15.935.9%357
53.5%
 Bobcat 20110220 32-bit2561+32−3248.7%+7.935.0%311
53.7%
 Cheng3 1.05 32-bit2559+32−3248.0%+14.533.6%324
51.4%
 Arasan 11.7 32-bit2558+32−3249.2%+6.136.0%308
55.9%
 DanaSah 4.882555+22−2250.5%−3.433.9%676
58.5%
 DanaSah 5.002551+29−2948.5%+9.232.2%395
53.8%
 Crafty 21.6 32-bit2549+34−3447.8%+13.130.1%302
63.2%
 Betsabe II 1.842543+14−1448.2%+13.925.6%1855
51.8%
 Crafty 21.5 32-bit2542+32−3248.3%+13.128.5%344
51.2%
 DanaSah 4.662541+26−2648.1%+11.635.2%475
52.1%
 DanaSah 4.602540+25−2548.5%+10.735.1%513
50.2%
33Tucano 1.042540+30−3047.2%+17.436.5%359
52.9%
34Rodent 0.102538+33−3351.1%−9.931.9%313
51.9%
 Crafty 22.0 32-bit2537+33−3348.5%+10.331.9%304
51.6%
 Phalanx XXIV2536+20−2048.7%+8.027.3%887
55.8%
 Caligula 0.82534+20−2049.1%+7.226.3%938
54.0%
 K2 0.832533+27−2751.7%−12.633.3%474
50.6%
 Arasan 11.6 32-bit2532+33−3351.8%−12.332.6%304
53.0%
 Arasan 12.1 32-bit2531+32−3351.4%−12.427.3%326
50.1%
 CuckooChess 1.102530+31−3151.5%−11.234.5%330
58.3%
 DanaSah 4.242527+17−1751.5%−11.036.9%1128
68.0%
35EXchess 6.10b 32-bit2518+33−3249.4%+3.532.5%314
52.9%
 Crafty 20.14 32-bit2516+27−2747.4%+20.033.4%482
51.0%
 DanaSah 5.062516+33−3349.7%+0.134.6%309
52.3%
 Brutus 7.02b2515+18−1852.0%−16.435.4%994
53.9%
 DanaSah 4.452513+29−2949.9%+1.538.4%378
54.5%
 Arasan 10.0 32-bit2510+33−3349.0%+6.528.8%309
51.5%
 Crafty 20.13 32-bit2509+33−3348.7%+10.133.3%312
51.9%
 CuckooChess 1.092508+33−3351.6%−12.626.8%317
52.7%
 Betsabe II 1.752507+22−2251.8%−14.623.3%730
55.3%
 DanaSah 4.372504+32−3249.7%+2.138.3%321
54.9%
 Crafty 20.11 32-bit2501+33−3449.8%+4.030.0%307
49.9%
36Pawny 0.3.1 32-bit2501+33−3348.9%+8.628.7%310
52.7%
 Arasan 11.3 32-bit2500+33−3348.7%+7.830.9%301
58.9%
 Arasan 10.32495+23−2445.6%+32.330.6%634
51.9%
 Cheng3 1.03 32-bit2494+33−3350.6%−5.630.8%318
51.9%
37GreKo 9.2 32-bit2493+33−3349.7%+1.732.9%304
54.0%
 K2 0.752491+23−2352.4%−18.732.8%634
58.0%
 Arasan 11.4 32-bit2487+34−3449.0%+7.928.5%305
50.0%
38DoubleCheck 3.1 32-bit2487+34−3451.0%−8.524.8%306
50.6%
 GreKo 8.2 32-bit2486+26−2649.1%+5.933.8%506
59.9%
 Arasan 10.2 32-bit2482+25−2545.4%+35.327.8%594
51.7%
39Pepito 1.59 32-bit2481+24−2449.6%+1.234.0%583
59.5%
40BBChess 1.3b2477+24−2450.2%−1.238.7%555
60.7%
 BBChess 1.3a2472+25−2551.6%−12.530.5%528
52.9%
41Nemeton 1.812471+26−2647.6%+15.336.0%491
50.9%
 Arasan 10.42470+20−2145.5%+32.730.0%850
54.3%
42Counter 1.22469+17−1748.2%+12.738.5%1139
68.4%
 Betsabe II 1.662462+22−2246.7%+24.328.4%718
51.9%
43Carballo 1.32461+25−2547.4%+18.131.0%561
52.0%
 Pawny 0.3 32-bit2460+33−3349.2%+3.834.3%303
53.1%
 Carballo 1.22459+24−2353.7%−24.629.5%634
51.7%
 Nemeton 1.82458+17−1751.9%−15.327.3%1250
55.5%
 Counter 1.12456+23−2350.8%−8.337.7%632
60.0%
 Nemeton 1.512452+22−2249.8%−0.728.8%732
53.3%
 Cyrano 0.32450+34−3449.2%+4.623.8%311
51.4%
 GreKo 8.0 32-bit2449+29−2950.6%−3.529.7%411
56.4%
 Arasan 9.52445+36−3647.3%+17.223.7%291
56.3%
 Betsabe II 1.472442+20−2049.9%+2.225.3%902
49.6%
44Typhoon 1.00-3482442+33−3348.5%+11.729.2%325
52.5%
 Arasan 10.12441+27−2745.8%+35.728.6%486
50.1%
 Cheng3 1.02b2441+33−3350.2%−4.130.4%312
54.2%
 K2 0.792439+29−2947.4%+18.430.8%400
50.7%
 Nemeton 1.62438+24−2446.4%+25.131.8%604
58.2%
 Critter 0.382434+32−3251.1%−9.133.4%320
49.9%
 Typhoon 1.00-3582434+17−1748.2%+11.731.1%1220
54.0%
45Murka 2 32-bit2432+30−3047.4%+18.726.3%400
57.2%
 GreKo 7.2 32-bit2428+33−3348.4%+9.935.5%304
51.3%
 DanaSah 3.632427+27−2748.4%+10.732.3%477
52.6%
 Arasan 9.22426+34−3446.1%+27.830.9%304
55.0%
 Nemeton 1.612423+28−2847.3%+18.032.3%421
56.0%
 DanaSah 2.852420+33−3349.0%+8.233.8%305
53.0%
46Kiwi 0.6d 32-bit2418+19−1948.3%+10.427.0%975
49.6%
 Nemeton 1.72418+18−1849.6%+1.225.2%1141
53.2%
 K2 0.712417+28−2851.4%−9.527.6%439
58.6%
 Pawny 0.2.2 32-bit2412+34−3448.8%+9.028.6%301
52.3%
47Diablo 0.5.12411+18−1848.8%+8.132.4%1082
52.2%
 Typhoon 1.00-3142410+34−3450.2%−0.223.0%305
56.1%
48RomiChess P3k 32-bit2407+19−1949.2%+5.133.0%906
61.9%
49Amy 0.87b2402+24−2449.4%+6.825.7%610
50.9%
 Cyrano 0.2f2402+32−3248.4%+13.532.9%316
48.6%
 Pawny 0.2.1 32-bit2402+31−3147.1%+20.325.5%373
54.3%
 Pawny 0.2 32-bit2400+29−2949.2%+5.430.8%396
56.1%
50Simplex 0.9.8 32-bit2397+30−3049.0%+5.031.2%359
57.0%
 Phalanx XXII2393+25−2450.1%−1.023.5%595
69.0%
 DoubleCheck 2.5.4 32-bit2383+33−3350.5%−3.928.6%318
51.4%
 RomiChess P3L 32-bit2382+33−3346.3%+28.333.4%314
55.1%
51Thor's Hammer 2.28 32-bit2379+23−2348.2%+13.629.2%682
53.3%
 GreKo 6.302378+33−3348.0%+13.231.6%307
57.1%
 Carballo 1.1.12373+32−3247.5%+19.527.4%340
52.5%
 Counter 1.02372+32−3250.3%−4.035.3%312
50.3%
 Typhoon 1.00-2852372+34−3449.5%+2.220.1%314
51.7%
52Ifrit m1.5 32-bit2371+27−2746.6%+24.329.1%453
50.8%
 GreKo 7.02370+28−2846.3%+29.027.8%454
54.9%
 GreKo 6.252368+33−3348.5%+8.931.5%308
57.7%
 GreKo 6.52363+26−2648.9%+7.731.5%495
50.0%
 Phalanx XXIII2363+32−3246.3%+24.324.8%351
66.4%
 Nemeton 1.412355+25−2547.6%+18.133.7%514
51.8%
 K2 0.672354+23−2352.7%−17.829.7%677
51.7%
 Nemeton 1.32353+31−3152.1%−17.633.5%340
51.8%
 Counter 0.82352+32−3248.6%+10.735.6%312
56.3%
 GreKo 5.92349+24−2446.4%+27.429.3%621
60.5%
 Ifrit m1.6 32-bit2343+32−3247.5%+15.135.0%314
53.8%
53Xpdnt 0907042341+33−3351.8%−13.729.0%314
61.7%
 Daydreamer 1.52335+22−2252.1%−18.834.3%722
60.9%
 Nemeton 1.12330+29−2947.5%+16.631.3%393
55.3%
54Amundsen 0.802327+17−1749.1%+7.329.2%1269
60.1%
 Simplex 0.9.7 32-bit2323+31−3148.6%+9.525.4%370
70.4%
 GreKo 5.52310+33−3350.7%−5.033.1%305
54.1%
 Nemeton 1.22308+26−2646.3%+23.828.7%516
62.8%
 Brutus 6.12301+34−3448.4%+8.225.0%312
49.5%
55Natwarlal 0.142301+19−1949.1%+6.725.2%1027
53.1%
 Xpdnt 0809272300+29−2951.2%−8.724.8%428
64.1%
 Natwarlal 0.122292+34−3449.4%+7.026.6%308
49.4%
 Nemeton 1.02292+30−3052.6%−18.127.4%383
50.2%
 Pawny 0.1.62292+33−3352.1%−15.724.4%328
71.1%
 Brutus 5.42278+34−3450.7%−4.029.1%302
54.1%
 GreKo 5.2.52276+35−3550.9%−8.727.0%289
78.9%
56Sungorus 1.4 32-bit2259+21−2148.2%+12.426.5%820
59.9%
 Sungorus 1.3 32-bit2254+34−3452.7%−16.524.3%301
55.6%
 Brutus 6.02251+35−3548.8%+5.022.6%301
49.0%
57RattateChess 1.0 Nosferatu2251+19−1949.9%+1.028.0%1008
54.0%
 EXchess 5.01b 32-bit2249+29−2946.5%+21.631.2%401
74.2%
58Feuerstein 0.4.6.12238+19−1949.1%+5.628.5%944
53.8%
 Betsabe II 1.08c2236+35−3549.2%+7.821.0%300
71.8%
 Vajolet 1.62.12221+34−3447.7%+12.628.4%310
55.6%
59Bagatur 1.2d 32-bit2218+34−3446.8%+19.827.2%298
52.6%
60Beowulf 2.4a 32-bit2217+20−1953.8%−29.425.3%958
65.7%
61ZCT 0.3.24512210+27−2749.4%+3.625.5%478
52.4%
 Betsabe II 1.09c2208+34−3548.2%+12.319.8%308
57.2%
62Jazz 501 32-bit2204+29−2952.5%−17.728.5%418
52.4%
63MORA 1.0.02203+29−2953.6%−26.027.3%428
55.5%
 RattateChess Bologna 20072200+25−2551.3%−9.525.0%588
62.5%
 Carballo 0.82195+22−2247.2%+19.030.6%706
50.4%
 Jazz 444 32-bit2195+32−3250.3%−3.625.2%353
62.6%
 Amundsen 0.65.12187+34−3448.7%+7.723.9%305
50.0%
 K2 0.572187+33−3347.0%+22.125.8%314
50.7%
 Feuerstein 0.4.5.22186+37−3749.2%+9.224.7%255
65.4%
 RedQueen 0.62177+30−3046.1%+27.319.9%418
54.7%
 Feuerstein 0.4.62174+38−3850.6%−2.218.5%259
51.6%
 Sungorus 1.22173+26−2652.4%−17.928.7%499
56.7%
 Pawny 0.132169+32−3252.2%−17.220.1%363
59.7%
 Simplex 0.9.3 32-bit2163+33−3448.9%+9.024.8%315
58.2%
 Betsabe II 1.052158+34−3445.2%+33.624.2%314
53.6%
64OliThink 5.1.92156+30−3046.6%+27.821.3%417
51.5%
 Bagatur 1.2b 32-bit2155+33−3446.2%+28.729.1%306
49.8%
65Chesley r323 32-bit2155+24−2449.0%+8.521.0%625
62.4%
 Ifrit j4.32150+28−2845.9%+27.829.5%440
68.8%
 K2 0.43f2139+33−3348.2%+11.521.3%338
54.3%
66Prophet 2.0 32-bit2137+19−1949.3%+4.224.0%1025
55.2%
67Parrot 07.07.222135+19−1947.3%+19.723.0%1047
51.7%
 Parrot 07.01.162134+31−3146.6%+26.021.1%394
68.8%
 Ifrit j4.22123+34−3445.5%+30.926.4%303
68.1%
68ChessKISS 1.3a 32-bit2111+32−3347.0%+18.930.3%320
51.3%
 DoubleCheck 2.1 32-bit2111+33−3348.0%+13.122.1%344
76.4%
 Carballo 0.52096+23−2347.1%+20.021.9%694
81.0%
69AdroitChess 0.42081+23−2357.6%−69.315.1%800
53.9%
 Feuerstein 0.4.5.12079+38−3848.0%+12.325.8%248
48.8%
 Ifrit j2.92079+34−3448.2%+12.221.3%314
90.6%
 ZCT 0.3.25002048+32−3246.2%+30.116.8%381
54.2%
70PLP 16615712046+22−2246.1%+28.224.3%760
58.3%
71Jabba 1.0 32-bit2043+21−2144.8%+38.625.0%839
85.8%
72Faile 1.4.42026+23−2355.2%−28.322.1%774
53.2%
73Slibo 0.5.12024+26−2645.5%+34.019.4%573
91.4%
74BibiChess 0.52000+24−2445.7%+31.226.5%607
61.0%
75Cupcake 1.01994+31−3145.5%+31.422.7%401
55.0%
76Schola 1.1.0 32-bit1991+26−2745.6%+32.825.1%514
67.8%
 AdroitChess 0.31983+25−2544.2%+46.018.5%626
85.2%
77Dabbaba 5.671964+25−2545.5%+33.426.4%557
66.0%
78Sissa 2.01957+23−2353.1%−23.230.1%678
55.6%
79Monik 2.2.3 32-bit1954+30−3044.4%+39.227.1%395
50.9%
 Feuerstein 0.4.4.21953+29−2941.2%+92.518.7%518
53.1%
80Wowl 1.3.81952+26−2745.4%+35.213.3%573
54.0%
81Smash 1.0.31950+26−2740.8%+74.217.8%574
69.0%
82Micro-Max 4.8 (DM-PII)1942+20−2048.3%+12.226.1%865
58.3%
 Dabbaba 6.521938+22−2248.6%+11.620.3%777
63.9%
83Eia 0.31933+20−2047.1%+22.424.4%914
71.3%
 Wowl 1.3.71924+25−2546.8%+24.611.7%630
76.1%
 Carballo 0.41909+32−3335.8%+103.434.8%342
55.0%
 Dabbaba 7.491906+12−1247.8%+17.519.9%3152
52.5%
 Jabba 130320121905+31−3139.1%+97.916.7%442
59.7%
84ChessterfieldCL i5a1900+24−2440.6%+74.320.4%658
68.2%
 Micro-Max 4.81891+28−2836.7%+103.124.7%493
77.7%
85CDrill 1800 build 41877+23−2441.4%+72.715.5%741
100.0%
86RataAeroespacial 0.2.11814+13−1342.5%+64.612.9%2478
100.0%
87TSCP 1.811691+19−2047.4%+22.017.0%1072
83.7%
88Spartan 1.01674+25−2563.5%−103.321.2%624
67.4%
89Philemon C1666+25−2462.3%−94.722.0%626
59.4%
90VanillaChess 2.6g1662+25−2561.5%−89.220.2%624
100.0%
91PolarChess 1.31574+25−2549.3%+3.016.9%629
57.0%
92Darky 0.5d1571+24−2443.5%+55.520.8%677
98.6%
93MSCP 1.6h1529+25−2544.0%+50.415.1%628
99.8%
94Apep 1.011478+25−2541.2%+72.710.1%683
100.0%
95BACE 0.461377+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 GTX10503460            
2ChessBrainVB 3.743072            
3Stockfish 2.2.2 32-bit3050   26 − 28
+8−10=36
−38
19 − 13
+11−5=16
−13
  33 − 5
+28−0=10
+71
    
4IvanHoe 9.46h 32-bit3023  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
+60
    
5Gull II b2 32-bit2982  13 − 19
+5−11=16
+13
10 − 21
+0−11=20
−54
        
6Protector 1.5.0 32-bit2948   10 − 20
+2−12=16
−22
        
7Toga II 3.02850       2 − 0
+2−0=0
+INF
    
8Booot 5.1.02844  5 − 33
+0−28=10
−71
5.5 − 28.5
+0−23=11
−60
  0 − 2
+0−2=0
−INF
 3.5 − 6.5
+1−4=5
−102
 6 − 0
+6−0=0
+INF
13.5 − 9.5
+9−5=9
−45
9MinkoChess 1.3 32-bit2829       6.5 − 3.5
+4−1=5
+102
  7.5 − 2.5
+6−1=3
+105
 
10Glaurung 2.1 32-bit2765            
11Texel 1.01 32-bit2764       0 − 6
+0−6=0
−INF
2.5 − 7.5
+1−6=3
−105
   
12Scorpio 2.7 32-bit2749       9.5 − 13.5
+5−9=9
+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

Open source 32-bit single-CPU engines (best versions only), top 12
#NameElo123456789101112
1Lc0 0.22.0 T40B.4-160 GTX10503460 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2ChessBrainVB 3.7430720.0 95.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
3Stockfish 2.2.2 32-bit30500.05.0 99.8100.0100.0100.0100.0100.0100.0100.0100.0
4IvanHoe 9.46h 32-bit30230.00.00.2 100.0100.0100.0100.0100.0100.0100.0100.0
5Gull II b2 32-bit29820.00.00.00.0 98.6100.0100.0100.0100.0100.0100.0
6Protector 1.5.0 32-bit29480.00.00.00.01.4 100.0100.0100.0100.0100.0100.0
7Toga II 3.028500.00.00.00.00.00.0 76.788.3100.0100.0100.0
8Booot 5.1.028440.00.00.00.00.00.023.3 80.6100.0100.0100.0
9MinkoChess 1.3 32-bit28290.00.00.00.00.00.011.719.4 100.099.9100.0
10Glaurung 2.1 32-bit27650.00.00.00.00.00.00.00.00.0 50.687.2
11Texel 1.01 32-bit27640.00.00.00.00.00.00.00.00.149.4 80.9
12Scorpio 2.7 32-bit27490.00.00.00.00.00.00.00.00.012.819.1 
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 December 7, 2019