CCRL 40/40
Downloads and Statistics
November 16, 2019
Testing summary:
Total: 1'098'633 games
played by 2'562 programs
150143 CPU days (X2 4600+)

White wins: 380'990 (34.7%)
Black wins: 283'127 (25.8%)
Draws: 434'516 (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 November 16, 2019 with Bayeselo based on 1'098'633 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 GTX10503463+28−2864.0%−83.862.7%362 
85.1%
 Lc0 0.21.2 w42716 GTX10503442+29−2964.7%−89.259.8%336
100.0%
2ChessBrainVB 3.743075+22−2251.7%−11.250.0%588
81.5%
 ChessBrainVB 3.723062+15−1551.2%−9.643.6%1423
86.9%
3Stockfish 2.2.2 32-bit3051+14−1461.4%−74.448.4%1619
56.6%
 Sting SF 4.63048+30−3045.4%+28.647.0%334
56.7%
 ChessBrainVB 3.703045+23−2351.1%−10.648.1%551
61.3%
 Stockfish 2.3.1 32-bit3040+17−1757.2%−44.350.5%1095
62.0%
 ChessBrainVB 3.663036+23−2351.5%−10.251.2%568
67.7%
 Sting SF 4.73028+22−2244.5%+33.450.5%632
50.8%
 Stockfish 2.1.1 32-bit3028+16−1663.8%−92.143.0%1362
56.5%
 ChessBrainVB 3.683026+21−2150.1%−1.254.3%654
56.6%
4IvanHoe 9.46h 32-bit3024+14−1455.8%−37.553.6%1668
84.3%
 Stockfish 2.0.1 32-bit3013+17−1765.3%−100.346.2%1122
77.6%
 Sting SF 2 32-bit3003+17−1751.3%−9.151.2%1062
57.2%
 Stockfish 1.9.1 32-bit3001+16−1665.7%−101.447.0%1208
84.9%
 Stockfish 1.8 32-bit2989+17−1766.6%−105.147.5%1064
51.7%
 ChessBrainVB 3.612988+27−2749.3%+4.147.7%421
63.1%
5Gull II b2 32-bit2983+17−1846.8%+18.652.6%960
56.5%
 ChessBrainVB 3.502980+24−2452.4%−15.746.7%553
53.4%
 Gull II 32-bit2979+18−1846.0%+22.157.1%854
53.1%
 Stockfish 1.7.1 32-bit2978+17−1666.5%−108.745.7%1206
97.2%
6Protector 1.5.0 32-bit2948+25−2545.2%+27.851.7%470
81.9%
 Stockfish 1.6.3 32-bit2934+17−1761.2%−70.648.1%1118
88.9%
 ChessBrainVB 3.312915+25−2552.6%−13.845.1%503
98.2%
 Gull 1.0a 32-bit2886+12−1245.7%+29.843.8%2262
80.3%
 Protector 1.4.0 32-bit2879+11−1145.5%+30.941.0%2766
56.6%
 Gull 1.1 32-bit2877+17−1747.4%+16.548.9%1051
53.0%
 Gull 1.2 32-bit2876+12−1245.3%+31.842.6%2286
56.6%
 ChessBrainVB 3.202874+25−2550.3%−2.447.4%489
58.4%
 Gull 0.12a 32-bit2871+21−2149.4%+2.644.8%717
66.9%
 Stockfish 1.5.1 32-bit2865+15−1555.1%−33.243.1%1506
90.1%
7Toga II 3.02851+16−1648.1%+10.842.9%1311
59.7%
 Gull 0.11a 32-bit2848+21−2146.8%+17.546.8%722
63.0%
8Booot 5.1.02844+10−1045.6%+29.941.5%3381
80.1%
9MinkoChess 1.3 32-bit2830+31−3146.0%+24.945.5%314
48.5%
 Protector 1.3.5 32-bit2830+14−1545.6%+28.445.9%1493
50.1%
 Stockfish 1.4 32-bit2830+16−1653.8%−24.548.9%1142
58.7%
 Cyclone xTreme Fury2827+19−1948.1%+11.448.8%811
52.5%
 Toga II 1.4.1SE2827+12−1250.0%+1.743.5%2395
51.6%
 Grapefruit 1.0 32-bit2826+9−948.4%+10.947.7%3991
55.2%
 Booot 5.02825+16−1645.2%+29.743.5%1342
52.3%
 Protector 1.3.4 32-bit2825+15−1545.6%+28.246.2%1356
52.6%
 Cyclone xTreme2824+13−1344.2%+38.045.8%2009
54.0%
 Cyclone 3.42823+21−2151.5%−8.947.2%685
51.7%
 ChessBrainVB 3.032822+25−2549.9%−1.940.8%512
52.5%
 Cyclone xTreme Rage2821+25−2548.4%+9.446.8%476
49.8%
 Toga II 1.4.1SE62821+23−2350.4%+0.045.1%567
63.3%
 Toga II 3.1.2SE2816+17−1752.9%−19.743.6%1051
52.3%
 Cyclone 2.22815+28−2849.1%+5.347.4%382
68.8%
 TheMadPrune 1.1.252806+24−2451.4%−10.348.0%504
53.6%
 Toga II 1.4 beta5c2804+24−2353.2%−20.946.2%558
54.7%
 Protector 1.3.1b 32-bit2802+23−2348.8%+8.943.6%608
65.1%
 Protector 1.3.2 32-bit2796+21−2145.7%+25.850.4%659
55.9%
 Stockfish 1.3.1 32-bit2793+25−2546.1%+25.541.4%512
61.1%
 Toga II 1.3.12789+11−1150.0%−0.542.1%2565
65.8%
 Grapefruit 1.0a32782+31−3248.1%+11.841.6%315
49.9%
 MinkoChess 1.2 32-bit2782+14−1445.6%+31.040.7%1765
53.3%
 Cyclone 1.02781+32−3251.0%−7.539.3%300
50.4%
 Stockfish 1.2 Default2781+21−2146.1%+23.644.5%679
77.5%
 Toga II 1.3.42767+28−2852.9%−18.142.1%411
54.6%
10‑11Glaurung 2.1 32-bit2765+18−1746.3%+25.439.5%1067
50.6%
10‑11Texel 1.01 32-bit2765+28−2852.2%−18.535.0%432
64.1%
 Toga II 1.2.1a 32-bit2759+12−1250.5%−6.239.2%2354
61.1%
 Glaurung 2.2 32-bit2756+24−2446.0%+24.341.4%565
64.6%
12Scorpio 2.7 32-bit2750+20−2049.0%+8.336.2%826
55.1%
 Stockfish 1.012747+31−3150.5%−5.643.8%322
55.1%
 MinkoChess 1.0 32-bit2744+32−3249.8%+1.641.1%314
56.6%
 MinkoChess 1.1 32-bit2741+27−2745.7%+26.040.9%455
55.5%
 Glaurung 2.0.1 32-bit2738+17−1747.2%+17.340.6%1196
58.3%
 Toga II 1.2 32-bit2735+25−2552.4%−18.437.2%511
55.6%
13Crafty 23.4 32-bit2733+19−1950.8%−5.540.4%861
55.5%
 Toga II 1.1a 32-bit2731+16−1652.8%−18.738.9%1275
60.8%
14Bison 9.11 32-bit2728+14−1448.5%+10.137.2%1810
74.8%
 Crafty 23.3 32-bit2716+32−3250.5%−4.341.4%309
68.8%
15Critter 0.42 32-bit2706+25−2551.9%−12.741.1%494
67.6%
 Booot 4.15.12697+30−3046.1%+23.842.1%359
50.6%
 Glaurung 2 epsilon/5 32-bit2697+27−2748.1%+10.635.8%441
51.5%
 Crafty 23.2 32-bit2696+32−3247.8%+15.840.0%320
49.6%
 Scorpio 2.6 32-bit2696+32−3249.7%+2.642.4%309
52.2%
 Fruit 2.12695+25−2551.5%−13.837.2%522
54.8%
 Booot 4.15.02693+14−1445.9%+26.844.9%1651
53.8%
16Vajolet 2.482692+31−3148.9%+4.933.9%348
59.4%
 Crafty 23.1 32-bit2687+18−1846.2%+24.942.2%970
54.4%
17Bobcat 3.25 32-bit2685+31−3146.9%+22.832.2%351
57.3%
18K2 0.952682+22−2247.7%+15.331.5%679
64.0%
 MinkoChess 0.8 32-bit2674+33−3351.3%−12.841.5%301
60.0%
 ChessBrainVB 2.052669+23−2349.6%+1.636.1%609
51.0%
 Scorpio 1.92669+31−3150.1%−4.134.0%362
50.8%
19Daydreamer 1.75 32-bit2668+17−1747.7%+14.541.2%1157
50.0%
 Glaurung 1.2.1 Avalanche 32-bit2668+32−3252.1%−16.335.4%328
53.2%
 Booot 4.14.02667+20−2051.4%−10.141.8%765
48.6%
 Scorpio 1.842667+32−3247.2%+9.429.9%354
55.9%
 Scorpio 2.5 32-bit2664+32−3249.5%+3.842.3%307
51.1%
 Glaurung 1.2.1 Crusader 32-bit2663+32−3251.6%−14.228.6%343
54.8%
 Scorpio 1.912661+14−1345.5%+30.336.7%1881
51.2%
 Vajolet 2.032661+24−2451.2%−11.733.8%562
52.8%
 Bobcat 2.75 32-bit2659+24−2447.7%+15.436.9%558
61.8%
 Glaurung 1.2.1 32-bit2655+17−1746.4%+23.633.6%1265
49.5%
 Scorpio 2.02b2655+30−3047.3%+17.537.2%355
55.2%
 Scorpio 2.0 32-bit2653+17−1745.9%+29.334.1%1256
51.4%
 Scorpio 2.1 32-bit2652+34−3449.1%+4.938.2%280
58.0%
20Cyrano 0.6b17 32-bit2648+14−1448.5%+9.640.7%1613
54.1%
 Scorpio 1.812646+35−3549.1%+11.931.8%277
53.7%
21Nawito 19062644+28−2850.6%−1.235.8%419
61.5%
22DanaSah 7.32640+14−1449.4%+4.634.8%1709
47.6%
 Scorpio 1.82640+20−2047.3%+19.035.7%869
57.5%
23RedQueen 1.0.0 32-bit2637+24−2451.6%−7.335.9%576
52.9%
 DanaSah 7.92636+19−1949.2%+5.227.3%944
49.9%
 Scorpio 2.05b2636+32−3250.5%−1.740.8%306
53.8%
 Glaurung 1.0.2 32-bit2635+17−1747.4%+19.432.0%1209
61.9%
24Cheng3 1.07 32-bit2630+26−2646.6%+22.331.7%517
48.8%
 Crafty 23.0 32-bit2630+29−2949.9%+1.641.3%380
53.7%
25Delfi 5.12628+25−2546.3%+24.333.9%522
54.7%
 Glaurung 1.1 32-bit2626+32−3348.8%+10.532.1%324
55.0%
26Arasan 13.4 32-bit2623+30−3049.7%+1.634.8%374
57.3%
 Bison 9.62620+23−2351.3%−14.233.9%635
51.6%
27Phalanx XXV2619+15−1549.6%+2.132.4%1493
54.6%
 Arasan 14.1 32-bit2617+33−3349.0%+4.633.3%309
49.2%
28Caligula 0.9g2617+22−2255.0%−37.029.2%698
50.0%
 DanaSah 7.02617+26−2651.3%−9.537.8%479
51.8%
 Bison 9.8 32-bit2616+33−3249.8%−0.933.7%309
51.5%
 K2 0.912616+15−1549.0%+6.632.9%1497
65.6%
 Arasan 13.2 32-bit2608+32−3251.0%−5.538.5%312
56.7%
 DanaSah 6.502605+22−2249.7%+0.836.0%691
51.6%
 Scorpio 1.72604+32−3249.7%+0.138.1%310
53.8%
 DanaSah 6.802602+28−2850.5%−2.340.3%412
56.6%
 Delfi 5.02599+20−2047.5%+15.337.1%805
49.9%
29Sloppy 0.2.2 32-bit2599+14−1448.1%+12.337.8%1775
57.2%
 Nawito 18122597+20−2048.2%+12.833.0%896
56.9%
 Crafty 22.8 32-bit2594+32−3248.4%+8.636.1%313
53.5%
30CuckooChess 1.12 32-bit2592+26−2648.8%+9.029.9%521
59.3%
 Booot 4.13.12587+28−2849.4%+1.739.9%404
53.1%
31Betsabe II 1.962586+26−2652.3%−14.327.3%528
49.8%
 RedQueen 1.1.1 32-bit2586+33−3250.6%−0.535.7%308
53.1%
 Nawito 1.1d2584+28−2850.2%−2.336.7%401
52.2%
 K2 0.872583+17−1849.0%+6.034.7%1102
54.7%
 Crafty 22.4 32-bit2581+32−3248.2%+10.937.3%308
52.4%
 Arasan 13.1 32-bit2579+32−3248.2%+13.037.7%310
55.0%
 RedQueen 0.9.8 32-bit2577+22−2249.6%+5.127.7%730
53.0%
 Cheng3 1.04 32-bit2576+32−3250.2%−2.234.0%326
58.8%
 Bobcat 20110414 32-bit2570+31−3149.4%+2.841.5%325
51.0%
 Scorpio 2.2 32-bit2570+28−2847.1%+20.335.3%417
51.3%
 DanaSah 5.072569+17−1749.9%−0.537.2%1191
57.2%
32Brutus 8.05 32-bit2567+17−1749.1%+4.036.8%1142
50.6%
 Cyrano 0.52567+31−3250.5%−2.835.9%326
54.5%
 Arasan 12.3 32-bit2565+24−2446.8%+23.130.0%597
48.0%
 CuckooChess 1.11 32-bit2565+29−2950.4%−2.434.1%384
53.8%
 Cheng3 1.06 32-bit2563+30−3047.3%+16.235.9%357
58.5%
 Arasan 11.7 32-bit2559+32−3249.2%+5.536.0%308
48.8%
 Bobcat 20110220 32-bit2559+32−3348.4%+10.435.3%309
49.9%
 Cheng3 1.05 32-bit2559+32−3248.0%+15.033.6%324
57.5%
 DanaSah 4.882556+22−2250.5%−4.033.9%676
58.5%
 DanaSah 5.002552+29−2948.5%+8.632.2%395
53.9%
 Crafty 21.6 32-bit2549+34−3447.8%+13.430.1%302
62.7%
 Betsabe II 1.842543+14−1448.2%+14.625.6%1855
52.2%
 Crafty 21.5 32-bit2542+32−3248.3%+13.728.5%344
51.2%
 DanaSah 4.662542+26−2648.1%+11.035.2%475
52.1%
 DanaSah 4.602541+25−2548.5%+10.035.1%513
50.1%
33Tucano 1.042541+30−3047.2%+16.836.5%359
53.0%
34Rodent 0.102539+33−3351.1%−10.431.9%313
51.7%
 Crafty 22.0 32-bit2538+33−3348.5%+9.731.9%304
51.5%
 Phalanx XXIV2537+20−2048.7%+7.627.3%887
55.5%
 Caligula 0.82535+20−2049.1%+6.826.3%938
54.5%
 Arasan 11.6 32-bit2533+33−3351.8%−12.732.6%304
49.3%
 K2 0.832533+27−2651.7%−12.133.3%474
54.0%
 Arasan 12.1 32-bit2531+33−3251.4%−12.027.3%326
50.1%
 CuckooChess 1.102531+31−3151.5%−11.834.5%330
58.3%
 DanaSah 4.242527+17−1751.5%−10.536.9%1128
67.7%
35EXchess 6.10b 32-bit2518+32−3349.4%+4.232.5%314
53.1%
 Crafty 20.14 32-bit2517+27−2747.4%+19.533.4%482
51.0%
 DanaSah 5.062516+33−3349.7%+0.634.6%309
52.4%
 Brutus 7.02b2515+19−1952.0%−15.935.4%994
53.9%
 DanaSah 4.452513+29−2949.9%+1.938.4%378
54.6%
 Arasan 10.0 32-bit2511+33−3449.0%+6.028.8%309
51.4%
 Crafty 20.13 32-bit2510+33−3348.7%+9.633.3%312
52.0%
 CuckooChess 1.092509+33−3351.6%−13.226.8%317
52.1%
 Betsabe II 1.752508+22−2251.8%−14.823.3%730
56.1%
 DanaSah 4.372505+32−3149.7%+1.638.3%321
54.7%
 Crafty 20.11 32-bit2502+34−3449.8%+3.430.0%307
49.9%
36Pawny 0.3.1 32-bit2502+33−3348.9%+8.028.7%310
52.5%
 Arasan 11.3 32-bit2500+33−3348.7%+8.430.9%301
59.2%
 Arasan 10.32496+24−2445.6%+31.730.6%634
51.8%
 Cheng3 1.03 32-bit2495+33−3250.6%−6.030.8%318
51.8%
37GreKo 9.2 32-bit2493+33−3349.7%+2.332.9%304
53.8%
 K2 0.752491+23−2352.4%−18.032.8%634
58.0%
 Arasan 11.4 32-bit2487+33−3349.0%+8.328.5%305
50.1%
38DoubleCheck 3.1 32-bit2487+34−3451.0%−7.924.8%306
50.5%
 GreKo 8.2 32-bit2487+26−2649.1%+5.533.8%506
59.9%
 Arasan 10.2 32-bit2482+25−2545.4%+35.727.8%594
51.6%
39Pepito 1.59 32-bit2482+24−2449.6%+0.634.0%583
59.5%
40BBChess 1.3b2477+24−2450.2%−0.738.7%555
60.7%
 BBChess 1.3a2473+25−2551.6%−13.030.5%528
54.3%
 Arasan 10.42471+21−2145.5%+32.330.0%850
48.5%
41Nemeton 1.812471+26−2647.6%+15.936.0%491
55.3%
42Counter 1.22469+17−1748.2%+13.338.5%1139
68.2%
 Betsabe II 1.662463+22−2246.7%+23.828.4%718
51.7%
43Carballo 1.32462+25−2547.4%+17.831.0%561
52.0%
 Pawny 0.3 32-bit2461+33−3349.2%+3.434.3%303
54.5%
 Nemeton 1.82459+17−1751.9%−15.727.3%1250
51.0%
 Carballo 1.22458+24−2353.6%−23.429.4%632
54.3%
 Counter 1.12456+23−2350.8%−7.837.7%632
59.7%
 Nemeton 1.512452+22−2249.8%−0.128.8%732
53.5%
 Cyrano 0.32451+34−3449.2%+4.023.8%311
51.5%
 GreKo 8.0 32-bit2450+29−2950.6%−4.029.7%411
56.4%
 Arasan 9.52446+35−3647.3%+16.823.7%291
56.0%
 Betsabe II 1.472443+20−2049.9%+1.825.3%902
49.7%
44Typhoon 1.00-3482443+33−3348.5%+11.229.2%325
52.4%
 Cheng3 1.02b2441+33−3350.2%−3.530.4%312
51.7%
 K2 0.792440+29−2947.6%+17.831.1%396
52.2%
 Arasan 10.12439+28−2845.5%+38.028.5%480
51.0%
 Nemeton 1.62439+24−2446.4%+24.831.8%604
58.7%
 Critter 0.382434+32−3251.1%−8.533.4%320
49.8%
 Typhoon 1.00-3582434+17−1748.2%+12.331.1%1220
54.0%
45Murka 2 32-bit2433+30−3047.4%+18.226.3%400
57.1%
 GreKo 7.2 32-bit2429+33−3348.4%+9.235.5%304
51.4%
 DanaSah 3.632428+27−2748.4%+10.332.3%477
52.6%
 Arasan 9.22426+34−3446.1%+28.330.9%304
54.3%
 Nemeton 1.612424+28−2847.3%+17.932.3%421
56.4%
 DanaSah 2.852420+33−3349.0%+8.933.8%305
53.2%
46Kiwi 0.6d 32-bit2419+19−1948.3%+9.827.0%975
49.3%
 Nemeton 1.72419+18−1849.6%+0.825.2%1141
53.5%
 K2 0.712418+28−2851.4%−10.027.6%439
58.6%
 Pawny 0.2.2 32-bit2413+34−3448.8%+8.328.6%301
53.7%
47Diablo 0.5.12411+18−1848.7%+8.332.5%1078
50.8%
 Typhoon 1.00-3142410+34−3450.2%+0.323.0%305
56.2%
48RomiChess P3k 32-bit2407+19−1949.2%+5.633.0%906
59.5%
 Pawny 0.2.1 32-bit2403+31−3147.1%+19.725.5%373
50.7%
49Amy 0.87b2402+24−2449.4%+7.425.7%610
50.9%
 Cyrano 0.2f2402+32−3348.4%+13.932.9%316
52.8%
 Pawny 0.2 32-bit2400+29−2949.2%+5.830.8%396
56.1%
50Simplex 0.9.8 32-bit2397+30−3149.0%+5.531.2%359
57.0%
 Phalanx XXII2394+24−2550.1%−1.523.5%595
69.1%
 DoubleCheck 2.5.4 32-bit2383+33−3350.5%−3.528.6%318
51.3%
 RomiChess P3L 32-bit2382+33−3346.3%+28.933.4%314
55.0%
51Thor's Hammer 2.28 32-bit2380+23−2348.2%+12.629.2%678
53.3%
 GreKo 6.302378+33−3348.0%+13.731.6%307
57.0%
 Carballo 1.1.12374+32−3247.5%+19.127.4%340
52.7%
 Counter 1.02372+32−3250.3%−3.635.3%312
50.3%
 Typhoon 1.00-2852372+34−3449.5%+2.620.1%314
52.4%
 GreKo 7.02371+28−2846.3%+28.527.8%454
49.2%
52Ifrit m1.5 32-bit2371+27−2846.6%+24.829.1%453
55.6%
 GreKo 6.252368+33−3348.5%+9.531.5%308
57.7%
 GreKo 6.52364+26−2648.9%+7.231.5%495
50.0%
 Phalanx XXIII2364+32−3246.3%+23.824.8%351
66.1%
 Nemeton 1.412355+25−2547.6%+18.833.7%514
52.0%
 K2 0.672354+23−2352.7%−17.329.7%677
51.8%
 Nemeton 1.32353+31−3152.1%−17.133.5%340
51.9%
 Counter 0.82352+32−3248.6%+11.235.6%312
56.4%
 GreKo 5.92349+24−2446.4%+28.129.3%621
60.4%
 Ifrit m1.6 32-bit2344+32−3247.5%+14.635.0%314
53.6%
53Xpdnt 0907042342+33−3351.8%−14.029.0%314
62.0%
 Daydreamer 1.52335+22−2252.1%−18.334.3%722
60.8%
 Nemeton 1.12330+29−2947.5%+17.231.3%393
55.4%
54Amundsen 0.802328+17−1749.1%+6.929.2%1269
60.2%
 Simplex 0.9.7 32-bit2323+31−3148.6%+9.925.4%370
70.4%
 GreKo 5.52311+33−3350.7%−5.733.1%305
54.0%
 Nemeton 1.22309+26−2646.3%+23.428.7%516
62.8%
 Brutus 6.12302+34−3448.4%+7.625.0%312
49.5%
55Natwarlal 0.142302+19−1949.1%+6.225.2%1027
53.0%
 Xpdnt 0809272300+29−2951.2%−8.024.8%428
64.4%
 Nemeton 1.02293+30−3052.6%−18.627.4%383
50.0%
 Pawny 0.1.62293+33−3352.1%−15.924.4%328
50.4%
 Natwarlal 0.122292+34−3449.4%+7.626.6%308
71.0%
 Brutus 5.42279+34−3450.7%−4.529.1%302
54.1%
 GreKo 5.2.52276+35−3550.9%−8.227.0%289
78.9%
56Sungorus 1.4 32-bit2260+21−2148.2%+11.926.5%820
59.7%
 Sungorus 1.3 32-bit2255+34−3452.7%−16.624.3%301
56.1%
57RattateChess 1.0 Nosferatu2252+19−1949.9%+0.528.0%1008
51.1%
 Brutus 6.02251+35−3548.8%+5.622.6%301
52.0%
 EXchess 5.01b 32-bit2250+29−2946.5%+21.331.2%401
74.4%
58Feuerstein 0.4.6.12238+19−1949.1%+6.228.5%944
53.7%
 Betsabe II 1.08c2236+35−3549.2%+8.421.0%300
71.7%
 Vajolet 1.62.12222+34−3447.7%+12.328.4%310
55.6%
59Bagatur 1.2d 32-bit2219+34−3446.8%+19.427.2%298
52.6%
60Beowulf 2.4a 32-bit2217+20−2053.8%−28.925.3%958
65.7%
61ZCT 0.3.24512210+27−2749.4%+4.225.5%478
52.5%
 Betsabe II 1.09c2209+34−3548.2%+11.919.8%308
57.2%
62Jazz 501 32-bit2205+29−2952.5%−18.228.5%418
52.2%
63MORA 1.0.02203+29−2953.6%−25.327.3%428
55.6%
 RattateChess Bologna 20072201+25−2551.3%−9.925.0%588
62.5%
 Carballo 0.82195+22−2247.2%+19.630.6%706
50.5%
 Jazz 444 32-bit2195+32−3250.3%−3.025.2%353
62.5%
 Amundsen 0.65.12187+34−3448.7%+8.323.9%305
50.8%
 Feuerstein 0.4.5.22187+37−3749.2%+8.724.7%255
49.2%
 K2 0.572187+33−3347.0%+22.825.8%314
67.4%
 RedQueen 0.62177+30−3046.1%+27.819.9%418
54.5%
 Feuerstein 0.4.62174+38−3850.6%−1.818.5%259
51.6%
 Sungorus 1.22173+26−2652.4%−17.328.7%499
56.8%
 Pawny 0.132170+32−3252.2%−17.720.1%363
59.8%
 Simplex 0.9.3 32-bit2164+34−3448.9%+8.524.8%315
58.1%
 Betsabe II 1.052159+34−3445.2%+33.324.2%314
53.6%
64OliThink 5.1.92157+30−3046.6%+27.421.3%417
51.7%
 Bagatur 1.2b 32-bit2156+33−3446.2%+28.229.1%306
49.6%
65Chesley r323 32-bit2156+24−2449.0%+8.021.0%625
62.4%
 Ifrit j4.32150+28−2845.9%+28.429.5%440
68.8%
 K2 0.43f2139+33−3348.2%+12.221.3%338
54.4%
66Prophet 2.0 32-bit2137+19−1949.3%+4.924.0%1025
55.2%
67Parrot 07.07.222136+19−1947.3%+19.423.0%1047
51.7%
 Parrot 07.01.162135+30−3146.6%+25.621.1%394
68.8%
 Ifrit j4.22123+34−3445.5%+31.626.4%303
68.2%
68ChessKISS 1.3a 32-bit2112+33−3347.0%+18.430.3%320
53.6%
 DoubleCheck 2.1 32-bit2110+33−3348.1%+12.121.9%342
74.2%
 Carballo 0.52096+23−2347.1%+20.621.9%694
80.9%
69AdroitChess 0.42081+23−2357.6%−68.515.1%800
52.8%
 Ifrit j2.92080+34−3448.2%+11.921.3%314
51.1%
 Feuerstein 0.4.5.12079+38−3848.0%+12.925.8%248
88.4%
 ZCT 0.3.25002049+32−3246.2%+29.616.8%381
54.2%
70PLP 16615712047+22−2246.1%+27.824.3%760
58.3%
71Jabba 1.0 32-bit2044+21−2144.8%+38.125.0%839
85.7%
72Faile 1.4.42026+23−2355.2%−27.722.1%774
53.3%
73Slibo 0.5.12025+26−2645.5%+33.619.4%573
91.3%
74BibiChess 0.52000+24−2445.7%+31.826.5%607
61.0%
75Cupcake 1.01995+31−3145.5%+30.922.7%401
55.1%
76Schola 1.1.0 32-bit1992+26−2645.6%+32.425.1%514
67.8%
 AdroitChess 0.31983+25−2544.2%+46.518.5%626
85.2%
77Dabbaba 5.671965+25−2545.5%+33.026.4%557
66.0%
78Sissa 2.01957+23−2353.1%−22.430.1%678
56.6%
 Feuerstein 0.4.4.21954+28−2941.2%+92.018.7%518
49.3%
79Monik 2.2.3 32-bit1954+30−3044.4%+39.727.1%395
53.8%
80Wowl 1.3.81952+26−2745.4%+35.913.3%573
54.0%
81Smash 1.0.31950+26−2640.8%+74.617.8%574
68.9%
82Micro-Max 4.8 (DM-PII)1942+20−2048.3%+12.726.1%865
58.3%
 Dabbaba 6.521939+22−2248.6%+11.320.3%777
63.9%
83Eia 0.31934+20−2047.1%+22.224.4%914
71.3%
 Wowl 1.3.71924+25−2546.8%+25.111.7%630
76.2%
 Carballo 0.41909+32−3335.8%+104.034.8%342
55.0%
 Dabbaba 7.491907+11−1247.8%+17.119.9%3152
52.5%
 Jabba 130320121906+31−3139.1%+97.516.7%442
59.7%
84ChessterfieldCL i5a1901+24−2440.6%+74.020.4%658
68.2%
 Micro-Max 4.81892+28−2836.7%+102.524.7%493
77.7%
85CDrill 1800 build 41877+23−2441.4%+73.515.5%741
100.0%
86RataAeroespacial 0.2.11815+13−1342.5%+64.012.9%2478
100.0%
87TSCP 1.811692+20−2047.4%+21.617.0%1072
83.7%
88Spartan 1.01675+25−2563.5%−103.521.2%624
67.4%
89Philemon C1667+25−2562.3%−94.922.0%626
59.4%
90VanillaChess 2.6g1663+25−2561.5%−89.320.2%624
100.0%
91PolarChess 1.31575+25−2549.3%+2.816.9%629
57.0%
92Darky 0.5d1571+24−2443.5%+56.120.8%677
98.7%
93MSCP 1.6h1530+25−2544.0%+50.315.1%628
99.8%
94Apep 1.011479+25−2541.2%+72.510.1%683
100.0%
95BACE 0.461378+23−2421.5%+257.19.8%1027
 

Results matrix

Open source 32-bit single-CPU engines (best versions only), top 12
#NameElo123456789101112
1Lc0 0.22.0 T40B.4-160 GTX10503463            
2ChessBrainVB 3.743075            
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
+21
 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-bit2948   10 − 20
+2−12=16
−21
        
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-bit2765            
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 GTX10503463 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2ChessBrainVB 3.7430750.0 96.1100.0100.0100.0100.0100.0100.0100.0100.0100.0
3Stockfish 2.2.2 32-bit30510.03.9 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-bit29480.00.00.00.01.4 100.0100.0100.0100.0100.0100.0
7Toga II 3.028510.00.00.00.00.00.0 77.788.3100.0100.0100.0
8Booot 5.1.028440.00.00.00.00.00.022.3 80.1100.0100.0100.0
9MinkoChess 1.3 32-bit28300.00.00.00.00.00.011.719.9 100.099.9100.0
10Glaurung 2.1 32-bit27650.00.00.00.00.00.00.00.00.0 50.687.3
11Texel 1.01 32-bit27650.00.00.00.00.00.00.00.00.149.4 81.0
12Scorpio 2.7 32-bit27500.00.00.00.00.00.00.00.00.012.718.9 
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 November 16, 2019