CCRL 40/15
Downloads and Statistics
February 8, 2020
Testing summary:
Total: 1'120'733 games
played by 2'610 programs

White wins: 387'881 (34.6%)
Black wins: 287'767 (25.7%)
Draws: 445'085 (39.7%)
White score: 54.5%

Open source 32-bit single-CPU engines

Comparing 344 engines!
95 best versions of selected engines played 3517 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 February 8, 2020 with Bayeselo based on 1'120'733 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 GTX10503466+21−2162.1%−76.663.9%642 
89.8%
 Lc0 0.21.2 w42716 GTX10503442+29−2964.7%−88.759.8%336
100.0%
2ChessBrainVB 3.743069+19−1949.6%+2.149.1%808
70.7%
 ChessBrainVB 3.723063+15−1551.2%−10.343.6%1423
87.2%
3Stockfish 2.2.2 32-bit3051+14−1461.4%−74.448.4%1619
56.1%
 Sting SF 4.63048+30−3045.4%+28.747.0%334
56.6%
 ChessBrainVB 3.703045+23−2351.1%−10.348.1%551
62.1%
 Stockfish 2.3.1 32-bit3040+17−1657.2%−44.350.5%1095
61.0%
 ChessBrainVB 3.663036+23−2351.5%−9.751.2%568
68.0%
 Sting SF 4.73029+22−2244.5%+32.550.5%632
51.3%
 Stockfish 2.1.1 32-bit3028+16−1563.8%−91.943.0%1362
55.7%
 ChessBrainVB 3.683026+21−2150.1%−0.854.3%654
57.7%
4IvanHoe 9.46h 32-bit3024+13−1355.8%−37.553.6%1668
83.9%
 Stockfish 2.0.1 32-bit3013+17−1765.3%−100.046.2%1122
78.1%
 Sting SF 2 32-bit3003+17−1751.3%−9.151.2%1062
55.7%
 Stockfish 1.9.1 32-bit3002+16−1665.7%−101.847.1%1210
85.9%
 Stockfish 1.8 32-bit2989+18−1766.6%−105.147.5%1064
50.8%
 ChessBrainVB 3.612988+27−2749.3%+4.547.7%421
63.8%
5Gull II b2 32-bit2983+18−1846.8%+18.652.6%960
55.9%
 ChessBrainVB 3.502980+24−2352.4%−15.446.7%553
54.1%
 Gull II 32-bit2979+18−1846.0%+22.157.1%854
53.7%
 Stockfish 1.7.1 32-bit2978+17−1666.0%−106.245.7%1232
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%−70.548.1%1118
88.4%
 ChessBrainVB 3.312916+25−2552.6%−14.545.1%503
98.3%
 Gull 1.0a 32-bit2886+12−1245.7%+29.943.8%2262
80.1%
 Protector 1.4.0 32-bit2879+11−1145.5%+30.540.9%2786
56.5%
 Gull 1.1 32-bit2877+17−1747.4%+16.848.9%1051
51.9%
 Gull 1.2 32-bit2877+12−1245.6%+30.042.6%2306
57.1%
 ChessBrainVB 3.202874+25−2550.3%−2.347.4%489
58.7%
 Gull 0.12a 32-bit2871+21−2149.4%+2.844.8%717
66.9%
 Stockfish 1.5.1 32-bit2865+15−1555.1%−33.043.1%1506
90.0%
7Toga II 3.02851+16−1648.1%+11.042.9%1311
59.9%
 Gull 0.11a 32-bit2848+20−2146.8%+17.646.8%722
61.0%
8Booot 5.1.02845+10−1045.8%+28.741.4%3401
81.0%
9MinkoChess 1.3 32-bit2830+31−3146.0%+25.245.5%314
48.8%
 Protector 1.3.5 32-bit2830+15−1545.6%+28.645.9%1493
53.8%
 Stockfish 1.4 32-bit2829+16−1653.5%−23.048.8%1156
55.6%
 Cyclone xTreme Fury2828+19−1948.1%+10.648.8%811
53.7%
 Grapefruit 1.0 32-bit2827+9−948.4%+10.147.7%3991
48.2%
 Toga II 1.4.1SE2827+12−1250.0%+1.943.5%2395
55.5%
 Booot 5.02826+15−1545.2%+29.043.5%1342
53.0%
 Protector 1.3.4 32-bit2825+15−1545.6%+28.346.2%1356
52.3%
 Cyclone xTreme2824+13−1344.2%+38.245.8%2009
54.1%
 Cyclone 3.42823+21−2151.5%−8.747.2%685
51.0%
 ChessBrainVB 3.032822+25−2549.9%−1.540.8%512
53.2%
 Cyclone xTreme Rage2821+25−2548.4%+9.446.8%476
49.8%
 Toga II 1.4.1SE62821+23−2350.4%+0.145.1%567
63.5%
 Toga II 3.1.2SE2816+17−1752.9%−19.743.6%1051
52.0%
 Cyclone 2.22815+28−2849.1%+5.647.4%382
68.8%
 TheMadPrune 1.1.252806+24−2451.4%−9.948.0%504
53.5%
 Toga II 1.4 beta5c2804+24−2453.2%−20.646.2%558
55.0%
 Protector 1.3.1b 32-bit2802+23−2348.8%+9.143.6%608
65.1%
 Protector 1.3.2 32-bit2796+21−2145.7%+26.050.4%659
56.0%
 Stockfish 1.3.1 32-bit2793+25−2546.1%+25.741.4%512
60.4%
 Toga II 1.3.12790+11−1250.0%−1.342.1%2565
66.0%
 Grapefruit 1.0a32783+31−3248.1%+11.141.6%315
50.0%
 MinkoChess 1.2 32-bit2783+14−1445.6%+30.340.7%1765
53.4%
 Cyclone 1.02781+32−3251.0%−7.439.3%300
50.6%
 Stockfish 1.2 Default2781+21−2246.1%+23.744.5%679
77.0%
 Toga II 1.3.42768+28−2852.9%−18.842.1%411
54.9%
10‑11Glaurung 2.1 32-bit2765+18−1846.3%+25.639.5%1067
50.6%
10‑11Texel 1.01 32-bit2765+28−2852.2%−18.135.0%432
63.8%
 Toga II 1.2.1a 32-bit2760+12−1250.5%−6.839.2%2354
62.0%
 Glaurung 2.2 32-bit2756+24−2446.0%+24.541.4%565
64.2%
12Scorpio 2.7 32-bit2750+20−2049.0%+8.736.2%826
55.2%
 Stockfish 1.012747+31−3150.5%−5.343.8%322
54.9%
 MinkoChess 1.0 32-bit2745+32−3249.8%+1.041.1%314
56.7%
 MinkoChess 1.1 32-bit2741+27−2745.7%+26.440.9%455
55.3%
 Glaurung 2.0.1 32-bit2739+16−1747.2%+16.640.6%1196
58.2%
 Toga II 1.2 32-bit2736+25−2552.4%−19.137.2%511
56.0%
13Crafty 23.4 32-bit2733+19−1950.8%−5.040.4%861
55.0%
 Toga II 1.1a 32-bit2732+16−1652.8%−19.338.9%1275
61.5%
14Bison 9.11 32-bit2728+14−1448.5%+10.437.2%1810
74.9%
 Crafty 23.3 32-bit2717+32−3250.5%−4.941.4%309
68.6%
15Critter 0.42 32-bit2706+25−2551.9%−12.441.1%494
63.3%
16DanaSah 8.32700+26−2653.2%−26.939.8%480
55.5%
 Booot 4.15.12697+30−3046.1%+24.142.1%359
50.3%
 Glaurung 2 epsilon/5 32-bit2697+27−2748.1%+11.135.8%441
51.9%
 Crafty 23.2 32-bit2696+32−3247.8%+16.040.0%320
51.4%
 Fruit 2.12695+25−2551.5%−13.337.2%522
54.8%
 Booot 4.15.02694+14−1445.9%+26.344.9%1651
49.5%
 Scorpio 2.6 32-bit2694+31−3148.9%+7.341.7%321
53.5%
17Vajolet 2.482692+31−3148.9%+5.233.9%348
59.2%
 Crafty 23.1 32-bit2688+18−1846.2%+24.342.2%970
54.5%
18Bobcat 3.25 32-bit2685+31−3146.9%+23.132.2%351
66.9%
19K2 0.952677+21−2147.9%+14.232.1%769
55.2%
 MinkoChess 0.8 32-bit2674+33−3351.3%−12.541.5%301
59.8%
 ChessBrainVB 2.052669+23−2349.6%+1.936.1%609
51.5%
 Glaurung 1.2.1 Avalanche 32-bit2669+32−3252.1%−16.935.4%328
49.2%
 Scorpio 1.92669+30−3050.1%−3.634.0%362
51.3%
20Daydreamer 1.75 32-bit2668+17−1747.7%+14.941.2%1157
51.7%
 Scorpio 1.842668+32−3247.2%+8.829.9%354
51.4%
 Booot 4.14.02667+20−2051.4%−9.741.8%765
56.9%
 Glaurung 1.2.1 Crusader 32-bit2664+32−3251.6%−14.828.6%343
49.1%
 Scorpio 2.5 32-bit2664+32−3249.5%+4.242.3%307
55.9%
 Scorpio 1.912662+14−1445.5%+29.736.7%1881
51.4%
 Vajolet 2.032661+24−2451.2%−11.433.8%562
52.9%
 Bobcat 2.75 32-bit2660+24−2447.7%+14.936.9%558
58.4%
 Scorpio 2.02b2656+30−3047.3%+16.937.2%355
50.5%
 Glaurung 1.2.1 32-bit2655+16−1746.4%+24.133.6%1265
56.5%
 Scorpio 2.0 32-bit2653+17−1745.9%+29.934.1%1256
51.7%
 Scorpio 2.1 32-bit2653+34−3449.1%+4.438.2%280
57.5%
21Cyrano 0.6b17 32-bit2649+14−1448.6%+8.640.7%1623
59.6%
 Scorpio 1.812644+34−3449.8%+5.831.4%299
57.2%
 Scorpio 1.82641+19−2047.3%+18.435.7%869
52.2%
 DanaSah 7.32640+14−1449.4%+5.034.8%1709
56.6%
22RedQueen 1.0.0 32-bit2638+24−2451.6%−8.035.9%576
52.0%
23Nawito 19062637+26−2650.2%+0.336.9%485
50.2%
 Scorpio 2.05b2637+32−3250.5%−2.340.8%306
50.8%
 DanaSah 7.92636+19−2049.2%+5.327.3%944
54.1%
 Glaurung 1.0.2 32-bit2635+17−1747.4%+20.032.0%1209
59.9%
 Crafty 23.0 32-bit2631+29−2949.9%+1.141.3%380
50.9%
24Cheng3 1.07 32-bit2630+26−2646.6%+22.831.7%517
52.8%
25Delfi 5.12629+25−2646.3%+23.733.9%522
54.6%
 Glaurung 1.1 32-bit2626+33−3348.8%+10.932.1%324
54.9%
26Arasan 13.4 32-bit2624+30−3049.7%+1.134.8%374
57.6%
 Bison 9.62620+23−2351.3%−13.633.9%635
51.7%
27Phalanx XXV2619+15−1549.6%+2.432.4%1493
54.2%
 DanaSah 7.02618+26−2651.3%−10.137.8%479
51.0%
 Arasan 14.1 32-bit2617+33−3349.0%+4.833.3%309
51.2%
 Bison 9.8 32-bit2616+32−3349.8%−0.633.7%309
50.8%
 K2 0.912616+15−1549.0%+7.132.9%1497
52.7%
28Caligula 0.9g2615+22−2254.3%−32.029.5%716
62.6%
 Arasan 13.2 32-bit2609+32−3251.0%−6.138.5%312
56.8%
 DanaSah 6.502605+22−2249.7%+1.236.0%691
51.7%
 Scorpio 1.72605+32−3249.7%−0.538.1%310
53.9%
 DanaSah 6.802602+27−2850.5%−2.040.3%412
56.2%
 Delfi 5.02600+20−2047.5%+14.937.1%805
50.1%
29Sloppy 0.2.2 32-bit2600+14−1448.1%+11.837.8%1775
53.4%
 Nawito 18122599+20−2048.3%+11.633.0%892
54.5%
 Crafty 22.8 32-bit2596+32−3248.7%+7.235.9%315
58.0%
30CuckooChess 1.12 32-bit2592+25−2548.8%+9.329.8%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%−0.335.7%308
52.0%
31Betsabe II 1.962585+25−2551.1%−5.827.0%564
51.2%
 Nawito 1.1d2584+28−2850.2%−2.136.7%401
52.3%
 K2 0.872583+18−1749.0%+6.434.7%1102
55.6%
 Crafty 22.4 32-bit2581+32−3248.1%+11.437.7%318
54.3%
 Arasan 13.1 32-bit2578+32−3247.9%+14.737.5%312
51.7%
 RedQueen 0.9.8 32-bit2578+22−2249.6%+4.627.7%730
53.9%
 Cheng3 1.04 32-bit2576+32−3250.2%−2.134.0%326
58.6%
 Bobcat 20110414 32-bit2571+31−3149.4%+2.141.5%325
51.9%
 DanaSah 5.072570+17−1749.9%−1.137.2%1191
48.7%
 Scorpio 2.2 32-bit2570+28−2847.1%+20.735.3%417
56.3%
32Brutus 8.05 32-bit2568+17−1749.1%+3.636.8%1142
51.4%
 Cyrano 0.52567+32−3150.5%−2.735.9%326
51.9%
 CuckooChess 1.11 32-bit2566+29−2950.4%−3.034.1%384
51.6%
 Arasan 12.3 32-bit2565+24−2446.8%+23.930.0%597
52.0%
 Cheng3 1.06 32-bit2564+30−3047.3%+16.135.9%357
53.3%
 Bobcat 20110220 32-bit2562+32−3248.7%+8.235.0%311
54.3%
 Cheng3 1.05 32-bit2560+32−3248.0%+14.533.6%324
51.5%
 Arasan 11.7 32-bit2559+32−3249.2%+6.036.0%308
55.7%
 DanaSah 4.882556+22−2250.5%−3.433.9%676
58.7%
 DanaSah 5.002552+29−2948.5%+9.032.2%395
53.6%
 Crafty 21.6 32-bit2550+34−3447.8%+13.130.1%302
61.7%
 Betsabe II 1.842544+14−1448.3%+14.125.6%1851
53.7%
 Crafty 21.5 32-bit2543+32−3248.3%+13.028.5%344
51.0%
 DanaSah 4.662542+26−2648.1%+11.635.2%475
52.3%
 DanaSah 4.602541+25−2548.5%+10.635.1%513
50.1%
33Tucano 1.042541+30−3047.2%+17.336.5%359
53.3%
34Rodent 0.102539+33−3351.1%−10.131.9%313
51.8%
 Crafty 22.0 32-bit2538+33−3348.5%+10.031.9%304
51.1%
 Phalanx XXIV2537+20−2048.7%+7.927.3%887
56.0%
 Caligula 0.82535+19−1949.1%+7.026.3%938
54.1%
 K2 0.832534+27−2751.7%−12.733.3%474
50.5%
 Arasan 11.6 32-bit2533+33−3351.8%−12.332.6%304
52.9%
 Arasan 12.1 32-bit2532+33−3251.4%−12.427.3%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
67.9%
35EXchess 6.10b 32-bit2519+32−3349.4%+3.632.5%314
53.2%
 Crafty 20.14 32-bit2517+27−2747.4%+19.933.4%482
53.8%
 Brutus 7.02b2516+19−1852.0%−16.435.4%994
52.1%
 DanaSah 5.062515+32−3249.5%+1.035.1%319
51.3%
 DanaSah 4.452514+29−2949.9%+1.538.4%378
55.3%
 Arasan 10.0 32-bit2511+33−3349.0%+6.128.8%309
50.8%
 Crafty 20.13 32-bit2510+33−3348.7%+10.133.3%312
52.0%
 CuckooChess 1.092509+33−3351.6%−12.726.8%317
52.4%
 Betsabe II 1.752508+22−2251.8%−14.523.3%730
56.0%
 DanaSah 4.372505+32−3249.7%+1.938.3%321
55.1%
 Crafty 20.11 32-bit2502+33−3349.8%+3.730.0%307
49.2%
36Pawny 0.3.1 32-bit2502+33−3348.9%+8.628.7%310
52.6%
 Arasan 11.3 32-bit2501+33−3448.7%+7.930.9%301
59.1%
 Arasan 10.32496+24−2445.6%+32.130.6%634
51.6%
 Cheng3 1.03 32-bit2495+33−3350.6%−5.530.8%318
51.9%
37GreKo 9.2 32-bit2494+33−3349.7%+1.932.9%304
54.0%
 K2 0.752492+23−2352.4%−18.632.8%634
58.1%
 Arasan 11.4 32-bit2488+33−3449.0%+7.828.5%305
49.9%
38DoubleCheck 3.1 32-bit2488+34−3451.0%−8.324.8%306
50.7%
 GreKo 8.2 32-bit2487+26−2649.1%+6.033.8%506
62.6%
 Arasan 10.2 32-bit2482+25−2545.5%+34.328.0%600
48.8%
39Pepito 1.59 32-bit2482+24−2449.6%+1.334.0%583
59.6%
40BBChess 1.3b2478+24−2450.2%−1.238.7%555
60.6%
 BBChess 1.3a2473+25−2551.6%−12.430.5%528
54.4%
 Arasan 10.42471+20−2145.5%+32.730.0%850
53.9%
41Counter 1.22470+17−1748.2%+12.838.5%1139
56.7%
42Nemeton 1.812467+25−2546.8%+20.835.3%521
59.6%
 Betsabe II 1.662463+22−2246.7%+24.328.4%718
52.1%
43Carballo 1.32462+25−2547.4%+18.031.0%561
51.9%
 Pawny 0.3 32-bit2461+33−3349.2%+3.934.3%303
53.1%
 Carballo 1.22460+23−2353.4%−22.829.6%642
51.1%
 Nemeton 1.82459+17−1751.9%−15.127.3%1250
56.2%
 Counter 1.12457+23−2350.8%−8.237.7%632
59.8%
 Nemeton 1.512453+22−2249.8%−0.628.8%732
53.8%
 Cyrano 0.32451+34−3449.2%+4.523.8%311
51.2%
 GreKo 8.0 32-bit2450+29−2950.6%−3.529.7%411
56.3%
 Arasan 9.52446+36−3647.3%+17.323.7%291
56.2%
 Betsabe II 1.472443+20−2049.9%+2.325.3%902
49.7%
44Typhoon 1.00-3482443+33−3348.5%+11.829.2%325
51.6%
 Arasan 10.12442+27−2746.4%+31.828.5%498
50.8%
 Cheng3 1.02b2442+33−3350.2%−4.030.4%312
54.0%
 K2 0.792440+29−2947.4%+18.530.6%402
51.1%
 Nemeton 1.62439+24−2446.4%+25.131.8%604
58.2%
 Critter 0.382435+32−3251.1%−9.133.4%320
49.7%
 Typhoon 1.00-3582435+17−1748.2%+11.931.1%1220
54.1%
45Murka 2 32-bit2433+30−3047.4%+18.826.3%400
59.1%
 DanaSah 3.632429+27−2748.4%+9.932.3%477
48.8%
 GreKo 7.2 32-bit2429+33−3348.4%+9.935.5%304
54.1%
 Arasan 9.22427+34−3446.1%+27.630.9%304
54.4%
 Nemeton 1.612424+28−2847.3%+18.032.3%421
56.2%
 DanaSah 2.852421+33−3349.0%+8.233.8%305
52.0%
 Nemeton 1.72420+18−1849.6%+0.425.2%1141
51.0%
46Kiwi 0.6d 32-bit2419+19−1948.3%+10.427.0%975
52.7%
 K2 0.712418+28−2851.4%−9.327.6%439
58.9%
 Pawny 0.2.2 32-bit2413+34−3448.8%+9.028.6%301
51.9%
47Diablo 0.5.12412+18−1848.8%+8.432.4%1082
52.3%
 Typhoon 1.00-3142411+34−3450.2%−0.123.0%305
56.4%
48RomiChess P3k 32-bit2408+19−1949.2%+5.233.0%906
61.8%
49Amy 0.87b2403+24−2449.4%+7.125.7%610
50.9%
 Cyrano 0.2f2403+32−3348.4%+13.632.9%316
48.9%
 Pawny 0.2.1 32-bit2403+31−3147.1%+20.325.5%373
54.1%
 Pawny 0.2 32-bit2401+29−2949.2%+5.530.8%396
56.3%
50Simplex 0.9.8 32-bit2398+30−3149.0%+5.031.2%359
56.6%
 Phalanx XXII2394+24−2450.1%−0.923.5%595
69.2%
 DoubleCheck 2.5.4 32-bit2384+33−3350.5%−3.928.6%318
51.3%
 RomiChess P3L 32-bit2383+33−3346.3%+28.433.4%314
55.0%
51Thor's Hammer 2.28 32-bit2380+22−2248.3%+12.529.2%696
53.5%
 GreKo 6.302379+33−3348.0%+13.331.6%307
56.9%
 Carballo 1.1.12375+32−3247.5%+18.627.4%340
52.5%
 Counter 1.02373+32−3250.3%−3.735.3%312
50.4%
 Typhoon 1.00-2852373+34−3449.5%+2.320.1%314
52.1%
52Ifrit m1.5 32-bit2372+27−2746.6%+24.229.1%453
50.7%
 GreKo 7.02371+28−2846.3%+29.027.8%454
54.5%
 GreKo 6.252369+33−3348.5%+9.131.5%308
57.0%
 Phalanx XXIII2365+32−3246.3%+23.524.8%351
50.2%
 GreKo 6.52364+26−2648.9%+7.931.5%495
68.0%
 Nemeton 1.412356+25−2547.6%+18.333.7%514
51.7%
 K2 0.672355+23−2352.7%−17.629.7%677
51.7%
 Nemeton 1.32354+31−3152.1%−17.333.5%340
51.9%
 Counter 0.82353+32−3248.6%+10.935.6%312
56.2%
 GreKo 5.92350+24−2446.4%+27.829.3%621
60.6%
 Ifrit m1.6 32-bit2344+32−3247.5%+15.135.0%314
53.7%
53Xpdnt 0907042342+33−3351.8%−13.429.0%314
61.6%
 Daydreamer 1.52336+22−2252.1%−18.534.3%722
60.8%
 Nemeton 1.12331+29−2947.5%+16.831.3%393
55.3%
54Amundsen 0.802329+17−1749.1%+6.729.2%1269
60.6%
 Simplex 0.9.7 32-bit2324+31−3148.6%+9.625.4%370
70.2%
 GreKo 5.52312+33−3350.7%−5.933.1%305
54.1%
 Nemeton 1.22309+26−2646.3%+24.028.7%516
62.8%
 Brutus 6.12302+34−3448.4%+8.425.0%312
49.6%
55Natwarlal 0.142302+19−1949.1%+6.925.2%1027
53.2%
 Xpdnt 0809272301+29−2951.2%−8.424.8%428
64.2%
 Natwarlal 0.122293+34−3449.4%+7.126.6%308
49.8%
 Nemeton 1.02293+30−3052.6%−18.327.4%383
49.6%
 Pawny 0.1.62293+33−3352.1%−15.524.4%328
70.9%
 Brutus 5.42280+34−3450.7%−4.729.1%302
54.1%
 GreKo 5.2.52277+35−3550.9%−8.427.0%289
79.2%
56Sungorus 1.4 32-bit2260+21−2148.2%+12.526.5%820
60.0%
 Sungorus 1.3 32-bit2255+34−3452.7%−16.524.3%301
54.4%
57RattateChess 1.0 Nosferatu2253+19−1949.9%+0.928.0%1024
52.0%
 Brutus 6.02252+35−3548.8%+5.422.6%301
52.3%
 EXchess 5.01b 32-bit2250+29−2946.5%+21.831.2%401
74.4%
58Feuerstein 0.4.6.12239+19−1949.1%+5.728.5%944
53.2%
 Betsabe II 1.08c2237+35−3549.2%+8.321.0%300
71.8%
 Vajolet 1.62.12223+34−3447.7%+12.128.4%310
55.9%
59Bagatur 1.2d 32-bit2219+34−3446.8%+20.127.2%298
52.9%
60Beowulf 2.4a 32-bit2218+19−1953.5%−27.124.9%980
65.4%
61ZCT 0.3.24512211+27−2749.4%+4.025.5%478
52.2%
 Betsabe II 1.09c2210+34−3448.2%+11.719.8%308
57.0%
62Jazz 501 32-bit2206+29−2952.5%−18.228.5%418
56.5%
63MORA 1.0.02202+28−2852.8%−19.727.5%440
51.4%
 RattateChess Bologna 20072202+25−2551.3%−10.025.0%588
62.4%
 Carballo 0.82196+22−2247.2%+19.330.6%706
50.7%
 Jazz 444 32-bit2196+32−3250.3%−3.325.2%353
62.2%
 Amundsen 0.65.12188+34−3448.7%+8.223.9%305
50.7%
 Feuerstein 0.4.5.22188+37−3749.2%+8.824.7%255
49.5%
 K2 0.572188+33−3347.0%+22.625.8%314
67.8%
 RedQueen 0.62178+30−3046.1%+27.219.9%418
53.7%
 Feuerstein 0.4.62175+38−3850.6%−1.718.5%259
51.5%
 Sungorus 1.22174+26−2652.4%−17.428.7%499
56.9%
 Pawny 0.132171+32−3252.2%−17.720.1%363
60.5%
 Simplex 0.9.3 32-bit2164+34−3448.9%+8.924.8%315
57.5%
 Betsabe II 1.052160+34−3445.2%+33.124.2%314
53.4%
64OliThink 5.1.92158+30−3046.6%+27.421.3%417
51.4%
 Bagatur 1.2b 32-bit2157+33−3446.2%+28.329.1%306
52.7%
65Chesley r323 32-bit2156+24−2448.9%+8.820.9%627
59.9%
 Ifrit j4.32151+28−2845.9%+28.229.5%440
54.8%
 MORA 1.1.02146+76−7745.0%+36.823.3%60
55.1%
 K2 0.43f2140+33−3348.2%+12.121.3%338
54.6%
66Prophet 2.0 32-bit2138+19−1949.3%+4.724.0%1025
54.8%
67Parrot 07.07.222137+19−1947.3%+19.323.0%1047
52.0%
 Parrot 07.01.162136+31−3146.6%+25.421.1%394
68.6%
 Ifrit j4.22124+34−3445.5%+31.626.4%303
64.2%
 DoubleCheck 2.1 32-bit2115+32−3346.3%+31.421.8%362
54.4%
68ChessKISS 1.3a 32-bit2113+32−3347.0%+18.630.3%320
78.1%
 Carballo 0.52097+23−2347.1%+20.521.9%694
82.2%
69AdroitChess 0.42082+23−2357.0%−65.015.1%816
51.4%
 Ifrit j2.92081+34−3448.2%+11.921.3%314
51.0%
 Feuerstein 0.4.5.12080+38−3848.0%+12.925.8%248
88.3%
 ZCT 0.3.25002050+32−3246.2%+29.716.8%381
54.4%
70PLP 16615712048+22−2246.1%+27.824.3%760
58.1%
71Jabba 1.0 32-bit2045+21−2144.8%+38.225.0%839
85.4%
72Faile 1.4.42028+23−2355.2%−28.522.1%774
54.0%
73Slibo 0.5.12026+26−2645.5%+33.619.4%573
91.2%
74BibiChess 0.52001+24−2545.7%+31.826.5%607
61.2%
75Cupcake 1.01996+31−3145.5%+30.922.7%401
55.0%
76Schola 1.1.0 32-bit1993+26−2645.6%+32.525.1%514
67.9%
 AdroitChess 0.31984+25−2544.2%+46.518.5%626
85.0%
77Dabbaba 5.671966+25−2545.5%+33.026.4%557
65.5%
78Sissa 2.01959+23−2353.1%−23.330.1%678
56.0%
79Monik 2.2.3 32-bit1956+30−3044.4%+38.927.1%395
51.0%
 Feuerstein 0.4.4.21955+28−2941.2%+91.918.7%518
52.5%
80Wowl 1.3.81954+26−2745.4%+35.013.3%573
54.6%
81Smash 1.0.31952+26−2640.8%+73.617.8%574
68.7%
82Micro-Max 4.8 (DM-PII)1943+20−2048.3%+12.826.1%865
58.4%
 Dabbaba 6.521940+22−2248.6%+11.320.3%777
63.5%
83Eia 0.31935+20−2047.1%+22.424.4%914
71.5%
 Wowl 1.3.71925+25−2546.8%+25.311.7%630
76.1%
 Carballo 0.41910+32−3335.8%+104.334.8%342
55.1%
 Dabbaba 7.491908+11−1247.8%+17.319.9%3152
52.8%
 Jabba 130320121907+31−3139.1%+97.516.7%442
59.4%
84ChessterfieldCL i5a1902+24−2440.6%+74.120.4%658
68.5%
 Micro-Max 4.81893+28−2836.7%+102.724.7%493
77.2%
85CDrill 1800 build 41879+23−2441.4%+72.615.5%741
100.0%
86RataAeroespacial 0.2.11816+13−1342.5%+64.312.9%2478
100.0%
87TSCP 1.811693+20−2047.4%+21.817.0%1072
83.7%
88Spartan 1.01676+25−2563.5%−103.321.2%624
67.4%
89Philemon C1668+25−2562.3%−94.722.0%626
59.4%
90VanillaChess 2.6g1664+25−2561.5%−89.220.2%624
100.0%
91PolarChess 1.31576+25−2549.3%+3.016.9%629
57.0%
92Darky 0.5d1572+24−2443.5%+56.420.8%677
98.7%
93MSCP 1.6h1531+25−2544.0%+50.415.1%628
99.8%
94Apep 1.011480+25−2541.2%+72.710.1%683
100.0%
95BACE 0.461379+23−2421.5%+257.29.8%1027
 

Results matrix

Open source 32-bit single-CPU engines (best versions only), top 12
#NameElo123456789101112
1Lc0 0.22.0 T40B.4-160 GTX10503466            
2ChessBrainVB 3.743069            
3Stockfish 2.2.2 32-bit3051   26 − 28
+8−10=36
−38
19 − 13
+11−5=16
−13
  33 − 5
+28−0=10
+71
    
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
+60
    
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 5.1.02845  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-bit2830       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-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
+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 GTX10503466 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2ChessBrainVB 3.7430690.0 93.5100.0100.0100.0100.0100.0100.0100.0100.0100.0
3Stockfish 2.2.2 32-bit30510.06.5 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 75.988.3100.0100.0100.0
8Booot 5.1.028450.00.00.00.00.00.024.1 81.0100.0100.0100.0
9MinkoChess 1.3 32-bit28300.00.00.00.00.00.011.719.0 100.099.9100.0
10Glaurung 2.1 32-bit27650.00.00.00.00.00.00.00.00.0 50.687.4
11Texel 1.01 32-bit27650.00.00.00.00.00.00.00.00.149.4 81.1
12Scorpio 2.7 32-bit27500.00.00.00.00.00.00.00.00.012.618.9 
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 February 8, 2020