CCRL 40/40
Downloads and Statistics
October 12, 2019
Testing summary:
Total: 1'090'583 games
played by 2'551 programs
149018 CPU days (X2 4600+)

White wins: 378'348 (34.7%)
Black wins: 281'291 (25.8%)
Draws: 430'944 (39.5%)
White score: 54.4%

Open source 32-bit 1-2-CPU engines

Comparing 338 engines!
93 best versions of selected engines played 3340 games with each other

CCRL 40/40 Rating List — Open source 32-bit 1-2-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 October 12, 2019 with Bayeselo based on 1'090'583 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 GTX10503461+29−2963.3%−79.863.6%324 
81.4%
 Lc0 0.21.2 w42716 GTX10503441+29−2964.7%−88.659.8%336
100.0%
 ChessBrainVB 3.743078+61−6055.0%−28.250.0%80
69.0%
2ChessBrainVB 3.723062+15−1551.2%−9.743.6%1423
86.0%
3Stockfish 2.2.2 32-bit3051+14−1461.4%−74.248.4%1619
57.7%
 Sting SF 4.63048+30−3045.4%+28.447.0%334
56.5%
 ChessBrainVB 3.703044+23−2351.1%−9.848.1%551
60.2%
 Stockfish 2.3.1 32-bit3040+17−1657.2%−44.250.5%1095
63.0%
 ChessBrainVB 3.663036+23−2351.5%−10.351.2%568
67.9%
 Sting SF 4.73028+22−2244.5%+33.150.5%632
49.5%
 Stockfish 2.1.1 32-bit3028+16−1563.8%−91.943.0%1362
57.7%
 ChessBrainVB 3.683026+21−2150.1%−1.454.3%654
55.3%
4IvanHoe 9.46h 32-bit3024+13−1355.8%−37.453.6%1668
84.7%
 Stockfish 2.0.1 32-bit3013+17−1765.6%−102.346.1%1106
77.1%
 Sting SF 2 32-bit3004+17−1751.3%−10.051.2%1062
57.2%
 Stockfish 1.9.1 32-bit3001+16−1665.7%−101.347.0%1208
84.6%
 Stockfish 1.8 32-bit2989+18−1867.4%−109.847.6%1030
53.0%
 ChessBrainVB 3.612988+27−2749.3%+3.947.7%421
61.9%
5Gull II b2 32-bit2983+18−1846.8%+18.752.6%960
57.7%
 ChessBrainVB 3.502980+24−2452.4%−15.946.7%553
52.2%
 Gull II 32-bit2979+18−1846.0%+22.357.1%854
55.0%
 Stockfish 1.7.1 32-bit2977+17−1766.5%−108.645.6%1198
97.0%
6Protector 1.5.0 32-bit2948+25−2545.2%+28.151.7%470
82.1%
 Stockfish 1.6.3 32-bit2934+17−1761.2%−70.648.1%1118
88.8%
 ChessBrainVB 3.312916+25−2552.6%−14.845.1%503
98.2%
 Gull 1.0a 32-bit2886+12−1245.7%+29.943.8%2262
80.5%
 Protector 1.4.0 32-bit2879+11−1145.4%+31.241.0%2762
56.3%
 Gull 1.1 32-bit2877+17−1747.4%+16.548.9%1051
54.4%
 Gull 1.2 32-bit2876+12−1245.2%+32.542.7%2278
55.6%
 ChessBrainVB 3.202874+25−2550.3%−2.447.4%489
58.6%
 Gull 0.12a 32-bit2871+21−2149.4%+2.544.8%717
66.9%
 Stockfish 1.5.1 32-bit2865+15−1555.1%−33.243.1%1506
89.9%
7Toga II 3.02851+16−1548.1%+10.942.9%1311
59.6%
 Gull 0.11a 32-bit2848+21−2046.8%+17.546.8%722
63.1%
8Booot 5.1.02844+10−1045.6%+30.241.5%3377
90.7%
 Stockfish 1.4 32-bit2831+16−1653.8%−25.048.9%1142
51.9%
9MinkoChess 1.3 32-bit2830+31−3146.0%+24.945.5%314
48.4%
 Protector 1.3.5 32-bit2830+15−1445.6%+28.545.9%1493
59.4%
 Cyclone xTreme Fury2828+19−1948.1%+10.448.8%811
53.5%
 Grapefruit 1.0 32-bit2827+9−948.4%+10.147.7%3991
48.5%
 Toga II 1.4.1SE2827+12−1250.0%+1.843.5%2395
55.7%
 Booot 5.02825+15−1545.2%+29.843.5%1342
52.2%
 Protector 1.3.4 32-bit2825+15−1545.6%+28.446.2%1356
52.8%
 Cyclone xTreme2824+13−1344.2%+38.145.8%2009
54.2%
 Cyclone 3.42823+21−2151.5%−8.847.2%685
51.6%
 ChessBrainVB 3.032822+25−2549.9%−1.940.8%512
52.6%
 Cyclone xTreme Rage2821+25−2548.4%+9.346.8%476
49.7%
 Toga II 1.4.1SE62821+23−2350.4%+0.245.1%567
63.1%
 Toga II 3.1.2SE2816+17−1752.9%−19.443.6%1051
52.7%
 Cyclone 2.22815+28−2849.1%+5.547.4%382
68.8%
 TheMadPrune 1.1.252806+24−2451.4%−10.148.0%504
54.2%
 Toga II 1.4 beta5c2804+24−2453.2%−21.146.2%554
53.9%
 Protector 1.3.1b 32-bit2802+23−2348.8%+9.043.6%608
65.3%
 Protector 1.3.2 32-bit2796+21−2145.7%+25.850.4%659
55.7%
 Stockfish 1.3.1 32-bit2793+25−2546.1%+25.841.4%512
61.2%
 Toga II 1.3.12790+12−1250.0%−1.442.1%2565
65.9%
 Grapefruit 1.0a32783+31−3248.1%+10.841.6%315
49.7%
 MinkoChess 1.2 32-bit2783+14−1445.6%+30.240.7%1765
53.5%
 Cyclone 1.02781+32−3251.0%−7.439.3%300
50.4%
 Stockfish 1.2 Default2781+21−2246.1%+23.744.5%679
77.6%
 Toga II 1.3.42767+28−2852.9%−18.142.1%411
54.4%
10‑11Glaurung 2.1 32-bit2765+17−1846.3%+25.439.5%1067
50.5%
10‑11Texel 1.01 32-bit2765+28−2852.2%−18.435.0%432
64.3%
 Toga II 1.2.1a 32-bit2759+12−1250.5%−6.239.2%2354
60.8%
 Glaurung 2.2 32-bit2756+24−2446.0%+24.541.4%565
64.7%
12Scorpio 2.7 32-bit2750+20−2049.0%+8.536.2%826
55.2%
 Stockfish 1.012747+31−3150.5%−5.543.8%322
55.0%
 MinkoChess 1.0 32-bit2744+32−3249.8%+1.841.1%314
56.6%
 MinkoChess 1.1 32-bit2741+27−2745.7%+26.140.9%455
55.6%
 Glaurung 2.0.1 32-bit2739+16−1647.2%+16.440.6%1196
58.5%
 Toga II 1.2 32-bit2735+25−2552.4%−18.437.2%511
55.4%
13Crafty 23.4 32-bit2733+19−1950.8%−5.340.4%861
55.4%
 Toga II 1.1a 32-bit2731+16−1652.8%−18.538.9%1275
61.2%
14Bison 9.11 32-bit2728+14−1448.5%+10.237.2%1810
74.6%
 Crafty 23.3 32-bit2717+32−3250.5%−5.041.4%309
68.9%
15Critter 0.42 32-bit2706+25−2551.9%−12.641.1%494
67.5%
 Booot 4.15.12697+30−3046.1%+23.842.1%359
50.7%
 Glaurung 2 epsilon/5 32-bit2697+27−2748.1%+10.735.8%441
49.7%
 Scorpio 2.6 32-bit2697+32−3249.8%+1.342.3%307
51.7%
 Crafty 23.2 32-bit2696+32−3247.8%+15.940.0%320
52.1%
 Fruit 2.12695+25−2551.5%−14.037.2%522
54.3%
 Booot 4.15.02693+14−1445.9%+27.044.9%1651
53.4%
16Vajolet 2.482692+31−3148.9%+5.133.9%348
59.7%
 Crafty 23.1 32-bit2687+18−1846.2%+25.042.2%970
53.8%
17K2 0.952686+23−2348.0%+13.331.8%657
51.4%
18Bobcat 3.25 32-bit2685+31−3146.9%+22.832.2%351
68.0%
 MinkoChess 0.8 32-bit2674+33−3351.3%−12.741.5%301
59.9%
 ChessBrainVB 2.052669+23−2349.6%+1.736.1%609
51.4%
 Scorpio 1.92669+30−3050.1%−4.234.0%362
50.5%
19Daydreamer 1.75 32-bit2668+17−1747.7%+14.641.2%1157
50.2%
 Glaurung 1.2.1 Avalanche 32-bit2668+32−3252.1%−16.435.4%328
53.1%
 Booot 4.14.02667+20−2051.4%−10.041.8%765
48.5%
 Scorpio 1.842667+32−3247.2%+9.429.9%354
55.9%
 Scorpio 2.5 32-bit2664+32−3249.5%+3.942.3%307
51.3%
 Glaurung 1.2.1 Crusader 32-bit2663+32−3251.6%−14.328.6%343
54.5%
 Scorpio 1.912661+13−1445.5%+30.436.7%1881
51.0%
 Vajolet 2.032661+24−2451.2%−11.633.8%562
52.8%
 Bobcat 2.75 32-bit2660+24−2447.7%+14.636.9%558
62.2%
 Glaurung 1.2.1 32-bit2655+16−1646.4%+23.733.6%1265
49.3%
 Scorpio 2.02b2655+30−3047.3%+17.637.2%355
55.1%
 Scorpio 2.0 32-bit2653+17−1745.9%+29.534.1%1256
51.4%
 Scorpio 2.1 32-bit2652+34−3449.1%+5.138.2%280
58.1%
20Cyrano 0.6b17 32-bit2649+14−1448.5%+8.740.7%1613
57.0%
 Scorpio 1.812645+36−3648.3%+16.631.7%271
53.0%
21Nawito 19062643+32−3250.0%+3.836.4%321
58.1%
22DanaSah 7.32640+14−1449.4%+4.434.8%1709
48.6%
 Scorpio 1.82640+20−2047.2%+19.135.6%867
56.3%
23RedQueen 1.0.0 32-bit2638+24−2451.6%−8.135.9%576
52.1%
 DanaSah 7.92637+20−2049.2%+4.327.2%924
50.7%
 Scorpio 2.05b2636+32−3250.5%−1.640.8%306
53.7%
 Glaurung 1.0.2 32-bit2635+17−1747.4%+19.632.0%1209
62.0%
24Cheng3 1.07 32-bit2630+26−2646.6%+22.431.7%517
49.0%
 Crafty 23.0 32-bit2630+29−2949.9%+1.741.3%380
53.5%
25Delfi 5.12629+25−2546.3%+23.333.9%522
55.1%
 Glaurung 1.1 32-bit2626+32−3348.8%+10.432.1%324
54.5%
26Arasan 13.4 32-bit2623+30−3049.7%+1.834.8%374
57.6%
 Bison 9.62620+23−2351.3%−14.033.9%635
51.5%
27Phalanx XXV2619+15−1549.6%+2.232.4%1493
53.8%
28Caligula 0.9g2618+22−2255.1%−38.329.2%696
51.4%
 Arasan 14.1 32-bit2617+33−3349.0%+4.633.3%309
49.5%
 DanaSah 7.02617+26−2651.3%−9.637.8%479
54.5%
 Bison 9.8 32-bit2615+33−3349.7%−0.033.6%307
48.8%
 K2 0.912615+15−1549.0%+7.432.9%1497
65.2%
 Arasan 13.2 32-bit2608+32−3251.0%−5.538.5%312
56.6%
 DanaSah 6.502605+22−2249.7%+0.936.0%691
52.1%
 Scorpio 1.72604+32−3249.7%+0.138.1%310
53.4%
 DanaSah 6.802602+28−2750.5%−2.240.3%412
56.8%
 Delfi 5.02599+20−2047.5%+15.437.1%805
50.2%
29Sloppy 0.2.2 32-bit2599+14−1448.1%+12.337.8%1775
56.4%
 Nawito 18122597+19−1948.2%+12.933.0%896
57.8%
 Crafty 22.8 32-bit2593+33−3347.9%+12.836.1%305
53.0%
30CuckooChess 1.12 32-bit2592+26−2648.8%+8.929.9%521
59.1%
 Booot 4.13.12587+28−2849.4%+1.739.9%404
52.1%
 RedQueen 1.1.1 32-bit2586+33−3350.6%−0.335.7%308
53.5%
 Nawito 1.1d2584+28−2850.2%−2.336.7%401
51.2%
31Betsabe II 1.962583+27−2751.4%−7.727.3%490
50.8%
 K2 0.872583+18−1849.0%+6.134.7%1102
55.4%
 Arasan 13.1 32-bit2581+33−3347.8%+13.936.8%302
49.4%
 Crafty 22.4 32-bit2581+32−3248.2%+10.937.3%308
57.8%
 RedQueen 0.9.8 32-bit2577+22−2249.6%+5.227.7%730
52.0%
 Cheng3 1.04 32-bit2576+32−3250.3%−2.534.0%324
59.3%
 Bobcat 20110414 32-bit2571+31−3149.5%+1.341.5%323
51.5%
 Scorpio 2.2 32-bit2570+28−2847.1%+20.435.3%417
51.2%
 DanaSah 5.072569+17−1749.9%−0.437.2%1191
57.9%
32Brutus 8.05 32-bit2567+17−1749.1%+4.036.8%1142
49.5%
 Cyrano 0.52567+32−3250.6%−3.535.8%324
53.1%
 CuckooChess 1.11 32-bit2566+29−2950.4%−3.434.1%384
52.0%
 Arasan 12.3 32-bit2565+24−2446.8%+23.230.0%597
52.7%
 Cheng3 1.06 32-bit2563+30−3047.3%+16.035.9%357
53.1%
 Bobcat 20110220 32-bit2561+33−3348.3%+10.734.9%301
54.9%
 Arasan 11.7 32-bit2559+32−3249.2%+5.536.0%308
48.6%
 Cheng3 1.05 32-bit2559+32−3248.0%+15.033.6%324
57.4%
 DanaSah 4.882556+22−2250.5%−3.933.9%676
58.3%
 DanaSah 5.002552+29−2948.5%+8.832.2%395
54.4%
 Crafty 21.6 32-bit2549+34−3447.8%+13.230.1%302
62.5%
 Betsabe II 1.842543+14−1448.2%+14.525.6%1855
52.1%
 Crafty 21.5 32-bit2542+32−3248.3%+13.728.5%344
51.2%
 DanaSah 4.662542+26−2648.1%+11.035.2%475
52.2%
 DanaSah 4.602541+25−2548.5%+10.135.1%513
49.7%
33Tucano 1.042541+30−3047.2%+17.036.5%359
53.6%
34Rodent 0.102539+33−3351.1%−10.531.9%313
51.5%
 Crafty 22.0 32-bit2538+33−3348.5%+9.831.9%304
51.3%
 Phalanx XXIV2537+20−2048.7%+7.727.3%887
55.9%
 Caligula 0.82535+20−2049.1%+6.726.3%938
54.7%
 Arasan 11.6 32-bit2533+33−3351.8%−12.832.6%304
49.1%
 K2 0.832533+27−2751.7%−12.133.3%474
54.1%
 Arasan 12.1 32-bit2531+32−3351.4%−12.027.3%326
50.1%
 CuckooChess 1.102531+31−3151.5%−11.734.5%330
58.7%
 DanaSah 4.242527+17−1751.5%−10.836.9%1128
67.3%
35EXchess 6.10b 32-bit2518+33−3249.4%+4.132.5%314
53.1%
 Crafty 20.14 32-bit2517+27−2747.4%+19.533.4%482
50.8%
 DanaSah 5.062516+33−3349.7%+0.734.6%309
52.7%
 Brutus 7.02b2515+18−1852.0%−15.935.4%994
54.0%
 DanaSah 4.452513+29−2949.9%+1.838.4%378
54.5%
 Arasan 10.0 32-bit2511+33−3349.0%+6.028.8%309
53.4%
 CuckooChess 1.092509+33−3351.6%−13.226.8%317
51.7%
 Betsabe II 1.752508+22−2251.8%−14.723.3%730
50.6%
 Crafty 20.13 32-bit2507+33−3347.8%+16.934.1%302
57.5%
 DanaSah 4.372503+32−3248.9%+7.638.6%311
52.1%
 Crafty 20.11 32-bit2502+33−3449.8%+3.430.0%307
49.6%
36Pawny 0.3.1 32-bit2502+33−3348.9%+8.128.7%310
52.7%
 Arasan 11.3 32-bit2500+33−3348.7%+8.430.9%301
59.0%
 Arasan 10.32496+23−2445.6%+31.830.6%634
54.1%
 Cheng3 1.03 32-bit2493+33−3350.0%−0.631.2%308
50.1%
37GreKo 9.2 32-bit2493+33−3349.7%+2.232.9%304
53.5%
 K2 0.752492+23−2352.4%−19.032.8%634
58.3%
 Arasan 11.4 32-bit2487+34−3449.0%+8.328.5%305
50.0%
38DoubleCheck 3.1 32-bit2487+34−3451.0%−7.824.8%306
50.5%
 GreKo 8.2 32-bit2487+26−2649.1%+5.633.8%506
60.0%
 Arasan 10.2 32-bit2482+25−2545.4%+35.827.8%594
52.0%
39Pepito 1.59 32-bit2481+24−2449.6%+1.534.0%583
59.4%
40BBChess 1.3b2477+24−2450.2%−0.838.7%555
57.0%
41Nemeton 1.812474+27−2748.1%+11.736.1%446
53.6%
 BBChess 1.3a2472+25−2551.6%−12.230.5%528
54.1%
 Arasan 10.42471+20−2045.5%+32.230.0%850
70.1%
 Betsabe II 1.662463+22−2246.7%+23.828.4%718
51.4%
42Carballo 1.32462+25−2547.4%+17.931.0%561
52.5%
 Pawny 0.3 32-bit2461+33−3349.2%+3.334.3%303
54.3%
 Nemeton 1.82459+17−1751.9%−15.627.3%1250
50.9%
 Carballo 1.22458+24−2453.6%−23.429.4%632
63.9%
 Nemeton 1.512452+22−2249.8%−0.128.8%732
53.2%
 Arasan 9.52451+36−3647.5%+14.523.8%281
50.5%
 Cyrano 0.32450+34−3449.2%+4.923.8%311
51.5%
 GreKo 8.0 32-bit2450+29−2950.6%−4.129.7%411
64.4%
 Betsabe II 1.472443+20−2049.9%+1.925.3%902
50.2%
43Typhoon 1.00-3482443+33−3348.5%+11.029.2%325
51.9%
 Cheng3 1.02b2442+33−3350.2%−4.430.4%312
51.7%
 K2 0.792441+29−2947.6%+16.831.1%396
52.3%
 Arasan 10.12439+27−2845.5%+38.128.5%480
51.2%
 Nemeton 1.62439+24−2446.4%+24.831.8%604
58.8%
 Critter 0.382434+32−3251.1%−8.733.4%320
49.9%
 Typhoon 1.00-3582434+17−1748.2%+12.131.1%1220
53.6%
44Murka 2 32-bit2433+30−3047.4%+18.226.3%400
59.2%
 DanaSah 3.632428+27−2748.4%+10.332.3%477
48.9%
 GreKo 7.2 32-bit2428+33−3348.4%+10.235.5%304
54.7%
 Arasan 9.22426+34−3446.1%+27.530.9%304
52.8%
 Nemeton 1.612424+28−2847.3%+17.932.3%421
56.3%
 DanaSah 2.852420+33−3349.0%+8.933.8%305
53.8%
45Kiwi 0.6d 32-bit2419+19−1948.3%+9.627.0%975
48.7%
 Nemeton 1.72419+18−1849.6%+0.825.2%1141
53.3%
 K2 0.712418+28−2851.4%−9.927.6%439
59.0%
 Pawny 0.2.2 32-bit2413+34−3448.8%+8.328.6%301
54.9%
46Diablo 0.5.12410+18−1848.7%+8.732.3%1072
49.3%
 Typhoon 1.00-3142410+34−3450.2%+0.423.0%305
56.8%
47RomiChess P3k 32-bit2407+19−1949.2%+5.433.0%906
59.4%
 Pawny 0.2.1 32-bit2403+31−3147.1%+19.625.5%373
50.7%
48Amy 0.87b2402+24−2449.4%+7.225.7%610
50.5%
 Cyrano 0.2f2402+32−3248.4%+13.932.9%316
53.0%
 Pawny 0.2 32-bit2400+29−2949.2%+5.730.8%396
56.2%
49Simplex 0.9.8 32-bit2397+30−3049.0%+5.331.2%359
57.3%
 Phalanx XXII2393+25−2550.1%−0.923.5%595
68.7%
 DoubleCheck 2.5.4 32-bit2383+33−3350.5%−3.628.6%318
51.3%
 RomiChess P3L 32-bit2382+33−3346.3%+28.833.4%314
56.7%
 GreKo 6.302378+33−3348.0%+13.831.6%307
50.4%
50Thor's Hammer 2.28 32-bit2378+23−2347.7%+16.829.5%674
57.6%
 Carballo 1.1.12374+32−3247.5%+19.327.4%340
56.4%
 GreKo 7.02371+28−2846.3%+28.227.8%454
48.9%
51Ifrit m1.5 32-bit2371+27−2846.6%+24.829.1%453
49.3%
 Typhoon 1.00-2852371+35−3549.5%+3.319.4%304
56.0%
 GreKo 6.252368+33−3348.0%+13.231.8%302
57.3%
 GreKo 6.52364+26−2648.9%+7.131.5%495
49.6%
 Phalanx XXIII2364+32−3246.3%+23.924.8%351
66.1%
 Nemeton 1.412355+25−2547.6%+18.833.7%514
52.2%
 K2 0.672354+23−2352.7%−17.429.7%677
51.1%
 Nemeton 1.32354+31−3152.1%−17.733.5%340
59.4%
 GreKo 5.92349+24−2446.4%+27.929.3%621
58.1%
 Ifrit m1.6 32-bit2345+33−3347.1%+17.135.1%308
56.0%
52Xpdnt 0907042341+33−3351.8%−13.229.0%314
61.8%
 Daydreamer 1.52335+22−2252.1%−18.534.3%722
60.3%
 Nemeton 1.12330+29−2947.5%+17.131.3%393
55.6%
53Amundsen 0.802328+17−1749.1%+6.829.2%1269
60.6%
 Simplex 0.9.7 32-bit2323+31−3148.6%+9.625.4%370
69.9%
 GreKo 5.52311+33−3350.7%−5.633.1%305
54.3%
 Nemeton 1.22309+26−2646.3%+23.228.7%516
66.2%
54Natwarlal 0.142302+19−1949.1%+6.225.2%1027
53.8%
 Xpdnt 0809272300+29−2951.2%−8.524.8%428
53.8%
 Brutus 6.12298+34−3447.5%+14.325.2%306
59.2%
 Natwarlal 0.122292+34−3449.4%+7.626.6%308
49.7%
 Nemeton 1.02292+30−3052.6%−17.827.4%383
50.1%
 Pawny 0.1.62292+33−3352.1%−15.224.4%328
70.9%
 Brutus 5.42279+34−3450.7%−4.429.1%302
54.0%
 GreKo 5.2.52277+35−3550.9%−9.027.0%289
79.4%
55Sungorus 1.4 32-bit2259+21−2148.2%+12.726.5%820
60.1%
 Sungorus 1.3 32-bit2254+34−3452.7%−16.124.3%301
55.5%
 Brutus 6.02251+35−3548.8%+5.322.6%301
48.7%
56RattateChess 1.0 Nosferatu2251+19−1949.9%+1.328.0%1008
53.8%
 EXchess 5.01b 32-bit2250+29−2946.5%+21.131.2%401
74.5%
57Feuerstein 0.4.6.12238+19−1949.1%+5.928.5%944
53.8%
 Betsabe II 1.08c2236+35−3549.2%+8.021.0%300
71.7%
 Vajolet 1.62.12222+34−3447.7%+12.028.4%310
55.8%
58Bagatur 1.2d 32-bit2218+34−3446.8%+20.027.2%298
51.7%
59Beowulf 2.4a 32-bit2217+20−2053.8%−29.025.4%952
66.5%
60ZCT 0.3.24512210+27−2749.4%+3.925.5%478
52.5%
 Betsabe II 1.09c2208+34−3548.2%+12.519.8%308
57.3%
61Jazz 501 32-bit2204+29−2952.5%−17.628.5%418
57.4%
 RattateChess Bologna 20072201+25−2551.3%−10.025.0%588
63.1%
 Carballo 0.82195+22−2247.2%+19.130.6%706
50.5%
 Jazz 444 32-bit2195+32−3250.3%−3.425.2%353
62.1%
 Amundsen 0.65.12187+34−3448.7%+8.123.9%305
50.6%
 Feuerstein 0.4.5.22187+37−3749.2%+8.724.7%255
50.4%
 K2 0.572187+33−3347.0%+21.825.8%314
56.9%
 MORA 1.0.02178+90−9145.5%+33.418.2%44
51.0%
 RedQueen 0.62177+30−3046.1%+27.419.9%418
54.5%
 Feuerstein 0.4.62174+38−3850.6%−2.118.5%259
52.6%
 Sungorus 1.22172+26−2652.4%−17.328.7%499
55.8%
 Pawny 0.132169+32−3252.2%−17.220.1%363
53.9%
 Simplex 0.9.3 32-bit2167+34−3449.5%+3.925.7%303
63.2%
 Betsabe II 1.052159+34−3445.2%+32.924.2%314
55.6%
62‑63Chesley r323 32-bit2156+24−2449.0%+7.621.0%625
48.4%
62‑63OliThink 5.1.92156+30−3046.6%+28.021.3%417
51.8%
 Bagatur 1.2b 32-bit2155+33−3446.2%+28.829.1%306
60.2%
 Ifrit j4.32150+28−2845.9%+27.829.5%440
69.0%
 K2 0.43f2139+33−3348.2%+11.421.3%338
53.6%
64Prophet 2.0 32-bit2137+19−1949.3%+4.624.0%1025
55.2%
65Parrot 07.01.162135+31−3146.6%+25.421.1%394
48.6%
 Parrot 07.07.222135+19−1947.3%+20.123.0%1047
73.6%
 Ifrit j4.22123+34−3445.5%+30.926.4%303
67.9%
66ChessKISS 1.3a 32-bit2111+32−3347.0%+19.230.3%320
53.8%
 DoubleCheck 2.1 32-bit2109+33−3348.1%+12.621.9%342
74.1%
 Carballo 0.52096+23−2347.1%+20.221.9%694
78.0%
 Ifrit j2.92080+34−3448.2%+11.621.3%314
51.0%
 Feuerstein 0.4.5.12079+38−3848.0%+12.625.8%248
52.5%
67AdroitChess 0.42078+24−2458.0%−71.914.4%772
92.4%
 ZCT 0.3.25002048+32−3246.2%+30.116.8%381
53.9%
68PLP 16615712046+22−2246.1%+28.424.3%760
57.8%
69Jabba 1.0 32-bit2043+21−2144.8%+38.925.0%839
85.6%
70Faile 1.4.42026+23−2355.2%−27.822.1%774
53.8%
71Slibo 0.5.12025+26−2645.5%+33.219.4%573
91.4%
72BibiChess 0.52000+24−2445.7%+31.326.5%607
60.8%
73Cupcake 1.01994+31−3145.5%+31.622.7%401
55.1%
74Schola 1.1.0 32-bit1992+26−2645.6%+32.025.1%514
68.1%
 AdroitChess 0.31983+25−2544.2%+46.118.5%626
84.9%
75Dabbaba 5.671964+25−2545.5%+33.826.4%557
65.5%
76Sissa 2.01957+23−2353.1%−22.530.1%678
57.4%
 Feuerstein 0.4.4.21954+28−2941.2%+91.618.7%518
49.0%
77Monik 2.2.3 32-bit1954+30−3044.4%+39.427.1%395
53.1%
78Wowl 1.3.81952+26−2745.4%+35.813.3%573
54.9%
79Smash 1.0.31950+26−2640.8%+74.317.8%574
69.0%
80Micro-Max 4.8 (DM-PII)1942+20−2048.3%+12.426.1%865
58.1%
 Dabbaba 6.521939+22−2248.6%+10.920.3%777
63.9%
81Eia 0.31933+20−2047.1%+22.924.4%914
71.0%
 Wowl 1.3.71924+25−2546.8%+25.011.7%630
76.5%
 Carballo 0.41909+32−3335.8%+103.434.8%342
54.5%
 Dabbaba 7.491907+12−1147.8%+16.819.9%3152
52.9%
 Jabba 130320121905+31−3139.1%+98.016.7%442
58.9%
82ChessterfieldCL i5a1901+24−2440.6%+74.020.4%658
68.9%
 Micro-Max 4.81891+28−2836.7%+103.224.7%493
77.5%
83CDrill 1800 build 41877+23−2441.4%+73.215.5%741
100.0%
84RataAeroespacial 0.2.11815+13−1342.5%+63.912.9%2478
100.0%
85TSCP 1.811692+20−2047.4%+21.417.0%1072
83.8%
86Spartan 1.01674+25−2563.5%−102.821.2%624
67.4%
87Philemon C1667+25−2562.3%−95.322.0%626
59.4%
88VanillaChess 2.6g1663+25−2561.5%−89.720.2%624
100.0%
89PolarChess 1.31574+25−2549.3%+3.416.9%629
57.0%
90Darky 0.5d1571+24−2443.5%+55.920.8%677
98.7%
91MSCP 1.6h1530+25−2544.0%+49.915.1%628
99.8%
92Apep 1.011479+25−2541.2%+72.210.1%683
100.0%
93BACE 0.461378+23−2421.5%+256.89.8%1027
 

Results matrix

Open source 32-bit 1-2-CPU engines (best versions only), top 12
#NameElo123456789101112
1Lc0 0.22.0 T40B.4-160 GTX10503461            
2ChessBrainVB 3.723062   7.5 − 8.5
+4−5=7
−55
        
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 8.5 − 7.5
+5−4=7
+55
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 1-2-CPU engines (best versions only), top 12
#NameElo123456789101112
1Lc0 0.22.0 T40B.4-160 GTX10503461 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2ChessBrainVB 3.7230620.0 86.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
3Stockfish 2.2.2 32-bit30510.014.0 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 98.7100.0100.0100.0100.0100.0100.0
6Protector 1.5.0 32-bit29480.00.00.00.01.3 100.0100.0100.0100.0100.0100.0
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 50.587.3
11Texel 1.01 32-bit27650.00.00.00.00.00.00.00.00.149.5 81.1
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
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

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Reference rating list:
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Created in 2005-2013 by CCRL team
Last games added on October 12, 2019