CCRL 40/15
Downloads and Statistics
November 21, 2020
Testing summary:
Total: 1'192'510 games
played by 2'742 programs

White wins: 410'546 (34.4%)
Black wins: 302'898 (25.4%)
Draws: 479'066 (40.2%)
White score: 54.5%

Open source 32-bit single-CPU engines

Comparing 343 engines!
94 best versions of selected engines played 3596 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 November 21, 2020 with Bayeselo based on 1'192'510 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+
1ChessBrainVB 3.743067+15−1548.7%+7.550.6%1280 
72.4%
 ChessBrainVB 3.723061+15−1551.2%−10.043.6%1423
86.4%
2Stockfish 2.2.2 32-bit3049+14−1461.4%−73.748.4%1619
57.0%
 Sting SF 4.63046+30−3045.4%+29.247.0%334
56.3%
 ChessBrainVB 3.703043+23−2351.1%−9.848.1%551
61.5%
 Stockfish 2.3.1 32-bit3039+17−1757.2%−44.850.5%1095
62.2%
 ChessBrainVB 3.663034+23−2351.5%−9.551.2%568
68.4%
 Sting SF 4.73027+22−2244.9%+30.350.2%646
49.1%
 Stockfish 2.1.1 32-bit3027+16−1563.5%−89.843.1%1390
57.0%
 ChessBrainVB 3.683025+21−2150.1%−1.454.3%654
56.8%
3IvanHoe 9.46h 32-bit3023+14−1455.8%−37.853.6%1668
85.2%
 Stockfish 2.0.1 32-bit3011+17−1764.6%−95.046.1%1176
77.4%
 Sting SF 2 32-bit3002+17−1751.3%−9.551.2%1062
52.8%
 Stockfish 1.9.1 32-bit3001+16−1664.3%−92.747.2%1286
85.1%
 Stockfish 1.8 32-bit2989+17−1764.5%−92.047.5%1172
55.9%
 ChessBrainVB 3.612987+27−2749.3%+3.847.7%421
63.3%
4Gull II b2 32-bit2981+17−1846.8%+19.252.6%960
56.2%
 ChessBrainVB 3.502979+24−2452.4%−16.046.7%553
53.8%
 Gull II 32-bit2977+18−1846.0%+22.757.1%854
52.5%
 Stockfish 1.7.1 32-bit2977+16−1664.5%−95.945.7%1326
97.4%
5Protector 1.5.0 32-bit2947+25−2545.2%+27.751.7%470
82.0%
 Stockfish 1.6.3 32-bit2933+17−1761.0%−69.748.2%1128
88.4%
 ChessBrainVB 3.312915+25−2552.6%−14.745.1%503
98.3%
 Gull 1.0a 32-bit2885+12−1245.7%+29.343.7%2290
81.3%
 Protector 1.4.0 32-bit2878+11−1145.6%+29.841.0%2812
55.4%
 Gull 1.1 32-bit2876+17−1747.4%+16.648.9%1051
50.2%
 Gull 1.2 32-bit2876+12−1245.9%+27.742.3%2340
59.2%
 ChessBrainVB 3.202873+25−2550.3%−2.647.4%489
57.6%
 Gull 0.12a 32-bit2870+21−2149.4%+2.944.8%717
70.1%
 Stockfish 1.5.1 32-bit2863+15−1554.8%−31.342.9%1530
88.8%
6Toga II 3.02850+16−1648.1%+10.742.9%1311
59.0%
 Gull 0.11a 32-bit2847+21−2146.8%+17.646.8%722
60.8%
7Booot 5.1.02844+10−1045.8%+28.441.4%3417
81.2%
8MinkoChess 1.3 32-bit2829+31−3146.0%+25.045.5%314
49.0%
 Stockfish 1.4 32-bit2829+16−1653.6%−23.349.1%1168
53.4%
 Protector 1.3.5 32-bit2828+15−1545.5%+29.345.8%1501
55.5%
 Cyclone xTreme Fury2827+19−1948.1%+10.648.8%811
53.9%
 Grapefruit 1.0 32-bit2826+9−948.4%+10.147.7%3991
47.5%
 Toga II 1.4.1SE2826+12−1250.0%+2.043.5%2395
56.8%
 Booot 5.02824+15−1545.4%+28.243.3%1366
51.9%
 Protector 1.3.4 32-bit2824+15−1545.6%+28.546.2%1356
52.6%
 Cyclone xTreme2823+13−1344.2%+38.345.8%2009
54.7%
 Cyclone 3.42822+21−2151.5%−9.047.2%685
51.0%
 ChessBrainVB 3.032821+25−2549.9%−1.540.8%512
53.0%
 Cyclone xTreme Rage2820+25−2548.4%+9.446.8%476
49.3%
 Toga II 1.4.1SE62820+23−2350.4%+0.445.1%567
62.7%
 Cyclone 2.22814+28−2849.1%+5.747.4%382
50.5%
 Toga II 3.1.2SE2814+17−1752.7%−18.143.4%1059
73.2%
 TheMadPrune 1.1.252805+24−2451.4%−10.248.0%504
56.0%
 Toga II 1.4 beta5c2802+23−2352.9%−18.845.9%564
51.9%
 Protector 1.3.1b 32-bit2801+23−2348.8%+9.243.6%608
64.9%
 Protector 1.3.2 32-bit2795+21−2145.7%+26.150.4%659
56.0%
 Stockfish 1.3.1 32-bit2793+25−2546.1%+24.841.4%512
60.2%
 Toga II 1.3.12789+12−1150.0%−1.042.1%2565
67.1%
 Grapefruit 1.0a32781+31−3248.1%+11.741.6%315
51.8%
 Cyclone 1.02780+32−3251.0%−7.139.3%300
51.0%
 MinkoChess 1.2 32-bit2780+14−1445.4%+31.740.6%1785
49.1%
 Stockfish 1.2 Default2780+21−2246.1%+24.044.5%679
77.0%
 Toga II 1.3.42767+28−2852.9%−18.442.1%411
55.2%
9Glaurung 2.1 32-bit2765+18−1846.3%+24.839.5%1067
50.8%
10Texel 1.01 32-bit2764+28−2852.2%−18.135.0%432
63.0%
 Toga II 1.2.1a 32-bit2759+12−1250.5%−6.439.2%2354
63.7%
 Glaurung 2.2 32-bit2754+24−2446.0%+25.341.4%565
63.7%
11Scorpio 2.7 32-bit2749+20−2049.0%+8.736.2%826
56.2%
 Stockfish 1.012746+31−3150.5%−5.743.8%322
53.9%
 MinkoChess 1.0 32-bit2744+32−3249.8%+1.141.1%314
56.9%
 MinkoChess 1.1 32-bit2740+27−2745.7%+26.440.9%455
54.8%
 Glaurung 2.0.1 32-bit2738+16−1647.2%+16.840.6%1196
57.7%
 Toga II 1.2 32-bit2735+25−2552.4%−18.637.2%511
57.0%
12Crafty 23.4 32-bit2732+19−1950.8%−5.040.4%861
53.9%
 Toga II 1.1a 32-bit2731+16−1652.8%−18.938.9%1275
62.4%
13Bison 9.11 32-bit2728+14−1448.5%+9.537.2%1810
75.3%
 Crafty 23.3 32-bit2715+32−3250.5%−4.041.4%309
68.4%
14Critter 0.42 32-bit2705+25−2551.9%−12.341.1%494
67.8%
15DanaSah 8.32698+20−2048.0%+9.239.6%846
52.9%
 Booot 4.15.12697+30−3046.1%+23.442.1%359
49.9%
 Glaurung 2 epsilon/5 32-bit2697+27−2748.1%+10.535.8%441
52.5%
 Crafty 23.2 32-bit2695+32−3247.8%+16.140.0%320
50.8%
 Fruit 2.12695+25−2551.5%−14.037.2%522
55.1%
 Booot 4.15.02693+14−1445.9%+26.544.9%1651
49.7%
 Scorpio 2.6 32-bit2693+31−3148.9%+7.641.7%321
53.2%
16Vajolet 2.482691+31−3148.9%+5.633.9%348
59.7%
 Crafty 23.1 32-bit2687+18−1846.2%+24.542.2%970
54.9%
17Bobcat 3.25 32-bit2684+31−3146.9%+23.132.2%351
68.0%
 MinkoChess 0.8 32-bit2674+33−3351.3%−13.341.5%301
59.4%
 ChessBrainVB 2.052669+23−2349.6%+1.336.1%609
50.3%
 Scorpio 1.92669+30−3050.1%−4.034.0%362
52.4%
18Daydreamer 1.75 32-bit2668+17−1747.7%+14.041.2%1157
48.6%
 Glaurung 1.2.1 Avalanche 32-bit2668+32−3252.1%−16.335.4%328
53.5%
 Booot 4.14.02667+20−2051.4%−10.141.8%765
48.3%
 Scorpio 1.842667+32−3247.2%+9.429.9%354
56.6%
 Glaurung 1.2.1 Crusader 32-bit2664+32−3251.6%−14.928.6%343
50.5%
 Scorpio 2.5 32-bit2663+32−3249.5%+4.242.3%307
55.7%
19K2 0.952661+17−1747.5%+16.532.9%1211
47.6%
 Scorpio 1.912661+13−1445.7%+29.436.7%1893
51.6%
 Vajolet 2.032661+24−2451.2%−11.733.8%562
53.8%
 Bobcat 2.75 32-bit2659+24−2447.7%+15.136.9%558
60.3%
 Glaurung 1.2.1 32-bit2655+16−1646.4%+23.833.6%1265
50.1%
 Scorpio 2.02b2655+30−3047.3%+17.337.2%355
55.2%
 Scorpio 2.0 32-bit2653+17−1745.9%+29.234.1%1256
51.6%
 Scorpio 2.1 32-bit2652+34−3449.1%+4.838.2%280
58.6%
20Cyrano 0.6b17 32-bit2648+14−1448.6%+8.640.5%1653
58.0%
 Scorpio 1.812644+34−3449.8%+5.531.4%299
57.1%
 Scorpio 1.82641+20−2047.3%+18.235.7%869
50.9%
 DanaSah 7.32640+14−1449.4%+5.134.8%1709
59.0%
21RedQueen 1.0.0 32-bit2637+24−2451.6%−7.735.9%576
52.2%
 DanaSah 7.92636+19−1949.2%+5.027.3%944
50.1%
 Scorpio 2.05b2636+32−3250.5%−1.940.8%306
53.3%
 Glaurung 1.0.2 32-bit2635+17−1747.4%+19.532.0%1209
61.8%
22Nawito 19062631+21−2149.8%+1.935.7%779
52.2%
23Cheng3 1.07 32-bit2630+26−2646.6%+22.131.7%517
49.1%
 Crafty 23.0 32-bit2630+29−2949.9%+1.441.3%380
53.0%
24Delfi 5.12629+25−2646.3%+23.333.9%522
54.4%
 Glaurung 1.1 32-bit2626+33−3348.8%+10.732.1%324
55.6%
25Arasan 13.4 32-bit2623+30−3049.7%+1.534.8%374
57.6%
 Bison 9.62619+23−2351.3%−13.233.9%635
51.0%
26Phalanx XXV2619+15−1549.6%+2.332.3%1501
52.5%
27Caligula 0.9g2618+21−2153.7%−28.029.8%784
50.5%
 DanaSah 7.02618+26−2651.3%−9.937.8%479
52.2%
 Arasan 14.1 32-bit2617+33−3349.0%+4.433.3%309
50.2%
 K2 0.912617+15−1549.0%+6.632.9%1497
51.6%
 Bison 9.8 32-bit2616+33−3349.8%−1.233.7%309
62.7%
 Arasan 13.2 32-bit2608+32−3251.0%−5.538.5%312
56.1%
 DanaSah 6.502605+22−2249.7%+1.236.0%691
51.7%
 Scorpio 1.72604+32−3249.7%+0.438.1%310
53.3%
 DanaSah 6.802603+27−2850.5%−2.840.3%412
57.0%
 Delfi 5.02600+20−2047.5%+14.837.1%805
50.9%
 Nawito 18122599+19−2048.3%+12.233.0%892
50.3%
28Sloppy 0.2.2 32-bit2599+14−1448.1%+12.337.8%1775
56.5%
 Crafty 22.8 32-bit2596+32−3248.7%+7.135.9%315
56.4%
29Betsabe II 1.962593+21−2151.0%−6.426.4%828
57.3%
30CuckooChess 1.12 32-bit2590+25−2548.8%+8.729.7%539
55.6%
 Booot 4.13.12587+28−2849.4%+2.039.9%404
52.9%
 RedQueen 1.1.1 32-bit2586+33−3350.6%−0.735.7%308
51.3%
 Nawito 1.1d2585+28−2850.2%−2.436.7%401
52.8%
 K2 0.872584+18−1749.0%+5.734.7%1102
57.8%
 Crafty 22.4 32-bit2580+32−3248.1%+11.937.7%318
53.2%
 Arasan 13.1 32-bit2578+32−3247.9%+14.537.5%312
52.4%
 RedQueen 0.9.8 32-bit2577+22−2249.6%+5.327.7%730
54.5%
 Cheng3 1.04 32-bit2575+32−3250.2%−1.734.0%326
58.6%
 Bobcat 20110414 32-bit2570+31−3149.4%+2.541.5%325
50.9%
 DanaSah 5.072570+17−1749.9%−1.337.2%1191
49.5%
 Scorpio 2.2 32-bit2570+28−2847.1%+20.335.3%417
56.1%
31Brutus 8.05 32-bit2567+17−1749.1%+4.236.8%1142
53.9%
 CuckooChess 1.11 32-bit2566+29−2950.4%−3.434.1%384
48.9%
 Cyrano 0.52566+31−3150.5%−2.535.9%326
52.0%
 Arasan 12.3 32-bit2565+24−2446.8%+23.830.0%597
52.2%
 Cheng3 1.06 32-bit2564+30−3047.3%+15.935.9%357
52.9%
 Bobcat 20110220 32-bit2562+32−3248.7%+8.235.0%311
56.2%
 Arasan 11.7 32-bit2559+32−3249.2%+5.836.0%308
48.9%
 Cheng3 1.05 32-bit2559+32−3248.0%+15.033.6%324
57.5%
 DanaSah 4.882556+22−2250.5%−3.933.9%676
57.8%
 DanaSah 5.002552+29−2948.5%+9.032.2%395
54.1%
 Crafty 21.6 32-bit2550+34−3447.8%+12.830.1%302
57.7%
 Betsabe II 1.842546+14−1448.3%+13.825.6%1851
57.6%
 Crafty 21.5 32-bit2543+32−3248.3%+12.928.5%344
51.7%
 DanaSah 4.662542+26−2648.1%+11.135.2%475
51.9%
 DanaSah 4.602541+25−2548.5%+10.135.1%513
50.1%
32Tucano 1.042541+30−3047.2%+17.036.5%359
53.2%
33Rodent 0.102539+33−3351.1%−10.431.9%313
51.7%
 Crafty 22.0 32-bit2538+33−3348.5%+9.931.9%304
50.5%
 Phalanx XXIV2538+20−2048.7%+7.127.3%887
50.5%
 Betsabe II 20202537+86−9328.4%+151.034.1%44
50.8%
 Caligula 0.82536+19−1949.1%+6.826.3%938
55.3%
 K2 0.832534+27−2751.7%−12.533.3%474
51.4%
 Arasan 11.6 32-bit2533+33−3351.8%−12.632.6%304
52.7%
 Arasan 12.1 32-bit2531+33−3351.4%−11.727.3%326
50.3%
 CuckooChess 1.102531+31−3151.5%−11.634.5%330
58.4%
 DanaSah 4.242527+17−1751.5%−10.436.9%1128
67.2%
34EXchess 6.10b 32-bit2519+33−3249.4%+3.632.5%314
53.1%
 Crafty 20.14 32-bit2517+27−2747.4%+19.933.4%482
54.3%
 Brutus 7.02b2515+19−1852.0%−15.535.4%994
51.9%
 DanaSah 5.062515+32−3249.5%+0.935.1%319
51.4%
 DanaSah 4.452514+29−2949.9%+1.238.4%378
55.5%
 Crafty 20.13 32-bit2511+33−3348.7%+9.333.3%312
50.5%
 Arasan 10.0 32-bit2510+33−3349.0%+6.328.8%309
52.9%
 Betsabe II 1.752509+22−2251.8%−14.723.3%730
49.5%
 CuckooChess 1.092509+33−3351.6%−12.826.8%317
57.4%
 DanaSah 4.372505+32−3249.7%+1.638.3%321
54.2%
 Crafty 20.11 32-bit2502+33−3349.8%+3.830.0%307
50.0%
35Pawny 0.3.1 32-bit2502+33−3348.9%+8.328.7%310
52.0%
 Arasan 11.3 32-bit2501+33−3448.7%+8.030.9%301
55.2%
 Arasan 10.32498+23−2346.3%+27.030.4%652
56.1%
 Cheng3 1.03 32-bit2495+32−3350.6%−5.630.8%318
52.0%
36GreKo 9.2 32-bit2494+33−3349.7%+1.732.9%304
52.7%
 K2 0.752492+23−2352.4%−18.032.8%634
58.5%
37DoubleCheck 3.1 32-bit2488+34−3451.0%−8.224.8%306
50.8%
 Arasan 11.4 32-bit2487+34−3449.0%+8.528.5%305
50.6%
 GreKo 8.2 32-bit2487+26−2649.1%+5.833.8%506
62.0%
38Pepito 1.59 32-bit2482+24−2449.6%+0.834.0%583
53.3%
 Arasan 10.2 32-bit2480+24−2445.9%+32.027.8%632
63.8%
39BBChess 1.3b2474+23−2349.2%+6.037.9%589
52.9%
 BBChess 1.3a2473+25−2551.6%−12.630.5%528
54.6%
 Arasan 10.42471+20−2045.8%+29.729.8%866
54.1%
40Counter 1.22470+17−1748.2%+12.538.5%1139
51.9%
41Nemeton 1.812469+19−2048.0%+12.833.9%883
60.7%
 Betsabe II 1.662465+22−2246.9%+22.428.2%728
51.5%
42Carballo 1.22464+23−2252.9%−18.830.4%690
53.6%
 Carballo 1.32463+25−2547.4%+17.631.0%561
52.3%
 Pawny 0.3 32-bit2462+33−3349.2%+3.234.3%303
52.0%
 Nemeton 1.82461+17−1751.9%−15.727.3%1250
60.4%
 Counter 1.12457+23−2350.8%−8.537.7%632
57.4%
 Nemeton 1.512454+22−2249.8%−0.928.8%732
55.3%
 Cyrano 0.32451+34−3449.2%+4.423.8%311
51.2%
 GreKo 8.0 32-bit2450+29−2950.6%−3.529.7%411
56.0%
 Arasan 9.52447+36−3647.3%+16.523.7%291
55.6%
 Betsabe II 1.472444+20−2049.9%+1.725.3%902
50.3%
43Typhoon 1.00-3482444+30−3048.8%+9.027.5%385
51.0%
 Arasan 10.12443+27−2746.8%+28.728.5%508
51.6%
 Cheng3 1.02b2442+33−3350.2%−3.930.4%312
53.3%
 K2 0.792440+29−2947.4%+19.130.6%402
51.3%
 Nemeton 1.62440+24−2446.4%+24.631.8%604
58.9%
 Critter 0.382435+32−3251.1%−8.833.4%320
50.5%
 Typhoon 1.00-3582435+17−1748.2%+11.731.1%1220
54.0%
44Murka 2 32-bit2433+30−3047.4%+18.626.3%400
56.7%
 GreKo 7.2 32-bit2429+33−3348.4%+9.935.5%304
51.6%
 DanaSah 3.632428+27−2748.4%+10.632.3%477
52.6%
 Arasan 9.22427+34−3446.1%+27.730.9%304
53.2%
 Nemeton 1.612425+28−2847.3%+18.032.3%421
56.8%
 DanaSah 2.852421+33−3349.0%+8.833.8%305
51.2%
 Nemeton 1.72421+18−1849.6%+0.425.2%1141
53.6%
45Kiwi 0.6d 32-bit2420+19−1948.3%+9.527.0%975
51.6%
 K2 0.712419+28−2851.4%−9.727.6%439
60.1%
 Pawny 0.2.2 32-bit2413+34−3448.8%+8.928.6%301
51.3%
46Diablo 0.5.12412+18−1848.8%+8.632.4%1082
51.9%
 Typhoon 1.00-3142412+34−3450.2%−0.723.0%305
57.2%
47RomiChess P3k 32-bit2408+19−1949.2%+5.333.0%906
61.7%
48Amy 0.87b2403+24−2449.4%+7.125.7%610
50.9%
 Cyrano 0.2f2403+32−3348.4%+13.632.9%316
49.0%
 Pawny 0.2.1 32-bit2403+31−3147.1%+20.225.5%373
54.1%
 Pawny 0.2 32-bit2401+29−2949.2%+5.430.8%396
56.2%
49Simplex 0.9.8 32-bit2398+30−3049.0%+5.131.2%359
56.8%
 Phalanx XXII2394+24−2450.1%−0.923.5%595
69.3%
 DoubleCheck 2.5.4 32-bit2384+33−3350.5%−3.928.6%318
50.1%
50Thor's Hammer 2.28 32-bit2384+22−2249.0%+6.428.8%730
51.2%
 RomiChess P3L 32-bit2383+33−3346.3%+28.533.4%314
57.2%
 GreKo 6.302379+33−3348.0%+13.331.6%307
56.2%
 Carballo 1.1.12375+32−3247.5%+19.227.4%340
53.1%
 Counter 1.02373+32−3250.3%−3.835.3%312
50.3%
 Typhoon 1.00-2852373+34−3449.5%+2.520.1%314
52.6%
51Ifrit m1.5 32-bit2372+27−2746.6%+24.129.1%453
50.2%
 GreKo 7.02371+28−2846.3%+29.227.8%454
54.9%
 GreKo 6.252369+33−3348.5%+9.031.5%308
57.5%
 GreKo 6.52365+26−2648.9%+6.931.5%495
49.4%
 Phalanx XXIII2365+32−3246.3%+23.924.8%351
68.3%
 K2 0.672356+23−2352.7%−18.129.7%677
48.5%
 Nemeton 1.412356+25−2547.6%+18.733.7%514
53.0%
 Nemeton 1.32355+31−3152.1%−17.933.5%340
52.8%
 Counter 0.82353+32−3248.6%+10.835.6%312
61.1%
 GreKo 5.92347+23−2446.6%+26.429.3%635
55.8%
 Ifrit m1.6 32-bit2344+32−3247.5%+15.035.0%314
52.2%
52Xpdnt 0907042343+33−3351.8%−13.729.0%314
62.6%
 Daydreamer 1.52336+22−2252.1%−18.234.3%722
60.2%
 Nemeton 1.12332+29−2947.5%+16.531.3%393
56.0%
53Amundsen 0.802329+17−1749.1%+7.029.2%1269
61.0%
 Simplex 0.9.7 32-bit2324+31−3148.6%+9.725.4%370
70.1%
 GreKo 5.52312+33−3350.7%−5.733.1%305
54.0%
 Nemeton 1.22310+26−2646.3%+23.328.7%516
63.4%
 Brutus 6.12302+34−3448.4%+8.225.0%312
51.3%
 Xpdnt 0809272301+29−2951.2%−8.224.8%428
52.4%
54Natwarlal 0.142300+19−1948.7%+9.625.0%1035
64.9%
 Natwarlal 0.122293+34−3449.4%+7.226.6%308
49.4%
 Nemeton 1.02293+30−3052.6%−17.927.4%383
49.8%
 Pawny 0.1.62293+33−3352.1%−15.324.4%328
71.0%
 Brutus 5.42280+34−3450.7%−4.529.1%302
52.0%
 GreKo 5.2.52279+34−3451.3%−12.526.6%297
81.1%
55Sungorus 1.4 32-bit2260+21−2148.2%+12.626.5%820
59.4%
 Sungorus 1.3 32-bit2256+34−3452.7%−16.824.3%301
53.6%
56RattateChess 1.0 Nosferatu2254+18−1949.9%+0.427.8%1036
53.4%
 Brutus 6.02252+35−3548.8%+5.422.6%301
51.7%
 EXchess 5.01b 32-bit2251+29−2946.5%+21.331.2%401
75.0%
57Feuerstein 0.4.6.12239+19−1949.1%+5.928.5%944
53.0%
 Betsabe II 1.08c2237+35−3549.2%+8.621.0%300
72.3%
 Vajolet 1.62.12223+34−3447.7%+11.928.4%310
55.3%
58Bagatur 1.2d 32-bit2220+34−3446.8%+19.427.2%298
51.1%
59Beowulf 2.4a 32-bit2219+19−1953.3%−25.525.0%1008
67.7%
60ZCT 0.3.24512211+27−2749.4%+4.125.5%478
52.4%
 Betsabe II 1.09c2210+34−3448.2%+11.719.8%308
56.8%
61Jazz 501 32-bit2206+29−2952.5%−18.128.5%418
58.3%
 RattateChess Bologna 20072202+25−2551.3%−9.925.0%588
52.4%
62MORA 1.0.02201+27−2752.5%−17.628.0%478
59.7%
 Carballo 0.82196+22−2247.2%+19.430.6%706
50.4%
 Jazz 444 32-bit2196+32−3250.3%−3.325.2%353
62.3%
 Amundsen 0.65.12188+34−3448.7%+8.423.9%305
50.7%
 Feuerstein 0.4.5.22188+37−3749.2%+8.824.7%255
49.9%
 K2 0.572188+33−3347.0%+22.425.8%314
58.0%
 MORA 1.1.02184+27−2845.3%+36.025.0%476
61.4%
 RedQueen 0.62178+30−3046.1%+27.319.9%418
53.1%
 Feuerstein 0.4.62176+38−3850.6%−2.318.5%259
52.1%
 Sungorus 1.22174+26−2652.4%−17.328.7%499
56.3%
 Pawny 0.132171+32−3252.2%−17.320.1%363
60.9%
 Simplex 0.9.3 32-bit2164+34−3448.9%+9.024.8%315
57.3%
 Betsabe II 1.052160+34−3445.2%+33.324.2%314
53.6%
63OliThink 5.1.92158+30−3046.6%+27.521.3%417
51.6%
 Bagatur 1.2b 32-bit2157+33−3446.2%+28.229.1%306
53.4%
64Chesley r323 32-bit2155+24−2448.9%+8.920.7%641
59.0%
 Ifrit j4.32151+28−2845.9%+28.129.5%440
68.7%
 K2 0.43f2140+33−3348.2%+12.021.3%338
54.2%
65Prophet 2.0 32-bit2138+19−1949.3%+4.824.0%1025
55.4%
66Parrot 07.07.222137+19−1947.3%+19.323.0%1047
51.5%
 Parrot 07.01.162136+31−3146.6%+25.621.1%394
68.5%
 Ifrit j4.22124+34−3445.5%+31.726.4%303
64.7%
 DoubleCheck 2.1 32-bit2115+32−3346.3%+31.121.8%362
54.2%
67ChessKISS 1.3a 32-bit2113+32−3347.0%+18.530.3%320
77.7%
 Carballo 0.52097+23−2347.1%+20.621.9%694
78.2%
 Ifrit j2.92081+34−3448.2%+12.021.3%314
51.1%
 Feuerstein 0.4.5.12080+38−3848.0%+13.025.8%248
51.6%
68AdroitChess 0.42079+22−2256.0%−55.715.3%858
92.8%
 ZCT 0.3.25002050+32−3246.2%+29.916.8%381
53.2%
69PLP 16615712048+22−2246.2%+27.724.2%768
59.7%
70Jabba 1.0 32-bit2045+21−2144.8%+38.225.0%839
85.0%
71Faile 1.4.42028+23−2355.2%−28.122.1%774
54.5%
72Slibo 0.5.12026+26−2645.5%+33.719.4%573
91.5%
73BibiChess 0.52001+24−2545.7%+31.626.5%607
61.2%
74Cupcake 1.01995+31−3145.5%+31.822.7%401
54.3%
75Schola 1.1.0 32-bit1993+26−2645.6%+32.525.1%514
68.9%
 AdroitChess 0.31984+25−2544.2%+46.118.5%626
85.0%
76Dabbaba 5.671965+25−2545.5%+33.826.4%557
65.6%
77Sissa 2.01958+23−2353.1%−22.530.1%678
56.4%
 Feuerstein 0.4.4.21955+28−2941.2%+92.118.7%518
49.3%
78Monik 2.2.3 32-bit1955+30−3044.4%+39.727.1%395
53.5%
79Wowl 1.3.81954+26−2745.4%+35.013.3%573
54.4%
80Smash 1.0.31952+26−2640.8%+73.617.8%574
68.9%
81Micro-Max 4.8 (DM-PII)1943+20−2048.3%+12.826.1%865
59.4%
 Dabbaba 6.521940+22−2248.6%+10.920.3%777
63.2%
82Eia 0.31934+20−2047.1%+23.024.4%914
71.0%
 Wowl 1.3.71925+25−2546.8%+25.111.7%630
76.0%
 Carballo 0.41910+32−3335.8%+104.234.8%342
55.6%
 Dabbaba 7.491908+12−1247.8%+16.919.9%3152
53.1%
 Jabba 130320121906+31−3139.1%+98.016.7%442
58.6%
83ChessterfieldCL i5a1902+24−2540.6%+73.520.4%657
68.5%
 Micro-Max 4.81893+28−2836.7%+102.624.7%493
77.9%
84CDrill 1800 build 41878+23−2441.4%+73.315.5%741
100.0%
85RataAeroespacial 0.2.11816+13−1342.5%+63.912.9%2478
100.0%
86TSCP 1.811693+19−1947.4%+21.217.0%1072
84.4%
87Spartan 1.01675+25−2563.5%−103.421.2%624
67.4%
88Philemon C1667+25−2462.3%−94.822.0%626
59.4%
89VanillaChess 2.6g1663+25−2561.5%−89.220.2%624
100.0%
90PolarChess 1.31575+25−2549.3%+2.916.9%629
56.3%
91Darky 0.5d1572+24−2443.5%+55.620.8%677
98.7%
92MSCP 1.6h1530+25−2544.0%+50.415.1%628
99.8%
93Apep 1.011479+25−2541.2%+72.610.1%683
100.0%
94BACE 0.461378+23−2421.5%+257.59.8%1027
 

Results matrix

Open source 32-bit single-CPU engines (best versions only), top 12
#NameElo123456789101112
1ChessBrainVB 3.743067            
2Stockfish 2.2.2 32-bit3049  26 − 28
+8−10=36
−37
19 − 13
+11−5=16
−13
  33 − 5
+28−0=10
+72
    2.5 − 1.5
+1−0=3
−249
3IvanHoe 9.46h 32-bit3023 28 − 26
+10−8=36
+37
 21 − 10
+11−0=20
+53
20 − 10
+12−2=16
+21
 28.5 − 5.5
+23−0=11
+60
     
4Gull II b2 32-bit2981 13 − 19
+5−11=16
+13
10 − 21
+0−11=20
−53
         
5Protector 1.5.0 32-bit2947  10 − 20
+2−12=16
−21
         
6Toga II 3.02850      2 − 0
+2−0=0
+INF
     
7Booot 5.1.02844 5 − 33
+0−28=10
−72
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
7 − 3
+5−1=4
+15
8MinkoChess 1.3 32-bit2829      6.5 − 3.5
+4−1=5
+102
  7.5 − 2.5
+6−1=3
+105
  
9Glaurung 2.1 32-bit2765            
10Texel 1.01 32-bit2764      0 − 6
+0−6=0
−INF
2.5 − 7.5
+1−6=3
−105
    
11Scorpio 2.7 32-bit2749      9.5 − 13.5
+5−9=9
+45
    29.5 − 22.5
+20−13=19
+28
12Crafty 23.4 32-bit2732 1.5 − 2.5
+0−1=3
+249
    3 − 7
+1−5=4
−15
   22.5 − 29.5
+13−20=19
−28
 
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
1ChessBrainVB 3.743067 95.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Stockfish 2.2.2 32-bit30494.6 99.8100.0100.0100.0100.0100.0100.0100.0100.0100.0
3IvanHoe 9.46h 32-bit30230.00.2 100.0100.0100.0100.0100.0100.0100.0100.0100.0
4Gull II b2 32-bit29810.00.00.0 98.6100.0100.0100.0100.0100.0100.0100.0
5Protector 1.5.0 32-bit29470.00.00.01.4 100.0100.0100.0100.0100.0100.0100.0
6Toga II 3.028500.00.00.00.00.0 74.788.0100.0100.0100.0100.0
7Booot 5.1.028440.00.00.00.00.025.3 81.2100.0100.0100.0100.0
8MinkoChess 1.3 32-bit28290.00.00.00.00.012.018.8 100.099.9100.0100.0
9Glaurung 2.1 32-bit27650.00.00.00.00.00.00.00.0 50.887.799.2
10Texel 1.01 32-bit27640.00.00.00.00.00.00.00.149.2 81.296.8
11Scorpio 2.7 32-bit27490.00.00.00.00.00.00.00.012.318.8 88.8
12Crafty 23.4 32-bit27320.00.00.00.00.00.00.00.00.83.211.2 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

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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 21, 2020