CCRL 40/15
Downloads and Statistics
July 11, 2020
Testing summary:
Total: 1'160'846 games
played by 2'685 programs

White wins: 400'696 (34.5%)
Black wins: 296'236 (25.5%)
Draws: 463'914 (40.0%)
White score: 54.5%

Open source 32-bit single-CPU engines

Comparing 345 engines!
95 best versions of selected engines played 3500 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 July 11, 2020 with Bayeselo based on 1'160'846 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+21−2162.1%−76.263.9%642 
88.2%
 Lc0 0.21.2 w42716 GTX10503441+29−2964.7%−88.859.8%336
100.0%
2ChessBrainVB 3.743066+17−1748.9%+6.450.0%1095
66.1%
 ChessBrainVB 3.723062+15−1551.2%−10.343.6%1423
86.8%
3Stockfish 2.2.2 32-bit3050+14−1461.4%−74.148.4%1619
57.0%
 Sting SF 4.63047+30−3045.4%+28.847.0%334
56.2%
 ChessBrainVB 3.703044+23−2351.1%−10.348.1%551
61.6%
 Stockfish 2.3.1 32-bit3040+17−1757.2%−45.250.5%1095
61.9%
 ChessBrainVB 3.663035+23−2351.5%−9.851.2%568
70.3%
 Stockfish 2.1.1 32-bit3028+16−1663.8%−92.743.0%1362
50.9%
 Sting SF 4.73027+22−2244.9%+31.050.2%646
55.1%
 ChessBrainVB 3.683025+21−2150.1%−0.854.3%654
56.8%
4IvanHoe 9.46h 32-bit3023+13−1455.8%−37.353.6%1668
84.0%
 Stockfish 2.0.1 32-bit3012+17−1765.1%−98.545.9%1142
78.3%
 Sting SF 2 32-bit3003+17−1751.3%−9.951.2%1062
55.8%
 Stockfish 1.9.1 32-bit3001+16−1664.6%−94.547.4%1270
84.8%
 Stockfish 1.8 32-bit2989+17−1765.1%−95.847.9%1140
53.8%
 ChessBrainVB 3.612987+27−2749.3%+4.447.7%421
63.3%
5Gull II b2 32-bit2982+18−1746.8%+18.852.6%960
56.5%
 ChessBrainVB 3.502979+23−2352.4%−15.446.7%553
53.5%
 Gull II 32-bit2978+18−1846.0%+22.357.1%854
51.9%
 Stockfish 1.7.1 32-bit2977+16−1664.7%−96.545.5%1314
97.5%
6Protector 1.5.0 32-bit2948+25−2545.2%+27.351.7%470
82.4%
 Stockfish 1.6.3 32-bit2933+17−1761.0%−69.448.2%1128
88.2%
 ChessBrainVB 3.312915+25−2552.6%−14.145.1%503
98.2%
 Gull 1.0a 32-bit2885+12−1245.7%+29.943.7%2282
81.3%
 Protector 1.4.0 32-bit2878+11−1145.6%+30.441.0%2804
56.3%
 Gull 1.1 32-bit2877+17−1747.4%+16.048.9%1051
51.8%
 Gull 1.2 32-bit2876+12−1245.7%+29.642.6%2316
57.4%
 ChessBrainVB 3.202874+25−2550.3%−2.947.4%489
58.4%
 Gull 0.12a 32-bit2870+21−2149.4%+3.144.8%717
67.6%
 Stockfish 1.5.1 32-bit2864+15−1555.0%−32.643.0%1518
90.1%
7Toga II 3.02850+16−1648.1%+11.242.9%1311
59.0%
 Gull 0.11a 32-bit2847+21−2146.8%+17.946.8%722
61.6%
8Booot 5.1.02844+10−1045.8%+28.841.4%3401
94.4%
 Protector 1.3.5 32-bit2830+15−1545.6%+27.745.9%1493
50.5%
 Stockfish 1.4 32-bit2830+16−1653.6%−23.849.1%1168
50.8%
9MinkoChess 1.3 32-bit2829+31−3146.0%+25.445.5%314
54.9%
 Cyclone xTreme Fury2827+19−1948.1%+10.848.8%811
53.9%
 Grapefruit 1.0 32-bit2826+9−948.4%+10.347.7%3991
48.2%
 Toga II 1.4.1SE2826+12−1250.0%+2.143.5%2395
57.0%
 Booot 5.02824+15−1545.2%+29.343.3%1350
53.6%
 Cyclone xTreme2824+13−1344.2%+37.645.8%2009
47.8%
 Protector 1.3.4 32-bit2824+15−1545.6%+28.546.2%1356
55.9%
 ChessBrainVB 3.032822+25−2549.9%−2.040.8%512
49.0%
 Cyclone 3.42822+21−2151.5%−8.347.2%685
54.7%
 Cyclone xTreme Rage2820+25−2548.4%+9.746.8%476
49.9%
 Toga II 1.4.1SE62820+23−2350.4%+0.545.1%567
63.5%
 Toga II 3.1.2SE2815+17−1752.9%−19.343.6%1051
52.1%
 Cyclone 2.22814+28−2849.1%+5.947.4%382
68.6%
 TheMadPrune 1.1.252805+24−2451.4%−9.648.0%504
56.8%
 Toga II 1.4 beta5c2802+23−2352.9%−18.745.9%564
51.6%
 Protector 1.3.1b 32-bit2801+23−2348.8%+9.343.6%608
64.8%
 Protector 1.3.2 32-bit2795+21−2145.7%+26.350.4%659
56.2%
 Stockfish 1.3.1 32-bit2793+25−2546.1%+25.041.4%512
60.7%
 Toga II 1.3.12789+11−1150.0%−0.942.1%2565
65.6%
 Grapefruit 1.0a32782+31−3148.1%+11.741.6%315
50.4%
 MinkoChess 1.2 32-bit2782+14−1445.6%+30.540.7%1765
53.7%
 Cyclone 1.02780+32−3251.0%−7.239.3%300
49.9%
 Stockfish 1.2 Default2780+21−2146.1%+24.244.5%679
77.2%
 Toga II 1.3.42767+28−2852.9%−18.442.1%411
54.9%
10Glaurung 2.1 32-bit2765+18−1846.3%+25.039.5%1067
50.9%
11Texel 1.01 32-bit2764+28−2852.2%−18.035.0%432
63.6%
 Toga II 1.2.1a 32-bit2759+12−1250.5%−6.539.2%2354
62.7%
 Glaurung 2.2 32-bit2755+24−2446.0%+24.741.4%565
63.9%
12Scorpio 2.7 32-bit2749+20−2049.0%+8.936.2%826
55.0%
 Stockfish 1.012747+31−3150.5%−6.143.8%322
54.8%
 MinkoChess 1.0 32-bit2744+32−3249.8%+1.441.1%314
56.8%
 MinkoChess 1.1 32-bit2740+27−2745.7%+26.640.9%455
55.0%
 Glaurung 2.0.1 32-bit2738+17−1747.2%+17.040.6%1196
57.9%
 Toga II 1.2 32-bit2735+25−2552.4%−18.537.2%511
56.7%
13Crafty 23.4 32-bit2732+20−1950.8%−4.940.4%861
54.8%
 Toga II 1.1a 32-bit2731+16−1652.8%−19.138.9%1275
61.3%
14Bison 9.11 32-bit2728+14−1448.5%+9.737.2%1810
75.0%
 Crafty 23.3 32-bit2716+32−3250.5%−4.741.4%309
68.7%
15Critter 0.42 32-bit2706+25−2551.9%−13.241.1%494
67.1%
 Booot 4.15.12697+30−3046.1%+23.542.1%359
50.4%
 Glaurung 2 epsilon/5 32-bit2697+27−2748.1%+10.535.8%441
52.2%
16DanaSah 8.32696+22−2250.5%−8.440.0%672
50.2%
 Crafty 23.2 32-bit2695+32−3247.8%+16.440.0%320
51.3%
 Fruit 2.12695+25−2551.5%−14.037.2%522
54.9%
 Booot 4.15.02693+14−1445.9%+26.644.9%1651
49.6%
 Scorpio 2.6 32-bit2693+31−3148.9%+7.741.7%321
53.4%
17Vajolet 2.482691+31−3148.9%+5.533.9%348
59.4%
 Crafty 23.1 32-bit2687+18−1846.2%+24.642.2%970
55.0%
18Bobcat 3.25 32-bit2685+31−3146.9%+22.032.2%351
67.9%
 MinkoChess 0.8 32-bit2674+33−3351.3%−13.241.5%301
59.3%
 ChessBrainVB 2.052669+23−2349.6%+1.536.1%609
50.9%
 Scorpio 1.92669+31−3150.1%−4.234.0%362
51.9%
19Daydreamer 1.75 32-bit2668+17−1747.7%+14.141.2%1157
49.0%
 Glaurung 1.2.1 Avalanche 32-bit2668+32−3252.1%−16.535.4%328
51.7%
 Scorpio 1.842667+32−3247.2%+9.229.9%354
51.4%
 Booot 4.14.02666+20−2051.4%−9.141.8%765
55.9%
20K2 0.952664+19−1848.1%+13.831.9%1015
51.6%
 Scorpio 2.5 32-bit2664+32−3249.5%+3.642.3%307
50.4%
 Glaurung 1.2.1 Crusader 32-bit2663+32−3251.6%−14.128.6%343
55.1%
 Scorpio 1.912661+14−1345.7%+29.336.7%1893
51.8%
 Vajolet 2.032660+24−2451.2%−11.033.8%562
53.3%
 Bobcat 2.75 32-bit2659+24−2447.7%+15.036.9%558
60.9%
 Glaurung 1.2.1 32-bit2655+17−1746.4%+23.633.6%1265
49.8%
 Scorpio 2.02b2655+30−3047.3%+17.337.2%355
55.1%
 Scorpio 2.0 32-bit2653+17−1745.9%+29.134.1%1256
51.6%
 Scorpio 2.1 32-bit2652+34−3449.1%+4.738.2%280
58.6%
21Cyrano 0.6b17 32-bit2648+14−1448.6%+8.540.5%1653
59.1%
 Scorpio 1.812644+34−3449.8%+5.031.4%299
57.2%
 DanaSah 7.32640+14−1449.4%+4.934.8%1709
49.4%
 Scorpio 1.82640+20−2047.3%+18.935.7%869
58.4%
22RedQueen 1.0.0 32-bit2637+24−2451.6%−7.835.9%576
52.2%
 DanaSah 7.92636+20−2049.2%+5.027.3%944
50.1%
 Scorpio 2.05b2636+32−3250.5%−2.040.8%306
53.6%
 Glaurung 1.0.2 32-bit2634+17−1747.4%+20.432.0%1209
60.0%
 Crafty 23.0 32-bit2630+29−2949.9%+1.441.3%380
51.1%
23‑24Cheng3 1.07 32-bit2629+26−2646.6%+22.931.7%517
51.9%
23‑24Nawito 19062629+22−2250.3%−1.636.6%681
50.4%
25Delfi 5.12628+25−2546.3%+24.233.9%522
54.6%
 Glaurung 1.1 32-bit2626+33−3348.8%+10.632.1%324
55.3%
26Arasan 13.4 32-bit2623+30−3049.7%+1.434.8%374
57.4%
 Bison 9.62619+23−2351.3%−13.133.9%635
51.4%
27‑28Caligula 0.9g2619+21−2154.1%−30.929.8%774
49.2%
27‑28Phalanx XXV2619+15−1549.6%+2.532.3%1501
53.4%
 DanaSah 7.02618+26−2651.3%−10.137.8%479
52.2%
 Arasan 14.1 32-bit2617+33−3349.0%+4.233.3%309
51.6%
 Bison 9.8 32-bit2616+32−3349.8%−1.333.7%309
48.5%
 K2 0.912616+15−1549.0%+7.432.9%1497
67.5%
 Arasan 13.2 32-bit2608+32−3251.0%−5.638.5%312
55.9%
 DanaSah 6.502605+22−2249.7%+1.136.0%691
51.9%
 Scorpio 1.72604+32−3249.7%+0.238.1%310
53.0%
 DanaSah 6.802603+28−2850.5%−2.840.3%412
57.6%
 Delfi 5.02599+20−2047.5%+15.437.1%805
51.7%
 Nawito 18122599+20−2048.3%+11.633.0%892
48.7%
29Sloppy 0.2.2 32-bit2599+14−1448.1%+12.237.8%1775
57.2%
 Crafty 22.8 32-bit2596+32−3248.7%+6.635.9%315
61.5%
30CuckooChess 1.12 32-bit2590+25−2548.8%+8.429.7%539
51.6%
31Betsabe II 1.962589+22−2150.9%−5.026.5%770
54.3%
 Booot 4.13.12587+28−2849.4%+1.639.9%404
52.7%
 RedQueen 1.1.1 32-bit2586+33−3250.6%−0.835.7%308
51.3%
 Nawito 1.1d2585+28−2850.2%−2.636.7%401
52.8%
 K2 0.872584+17−1849.0%+5.634.7%1102
57.9%
 Crafty 22.4 32-bit2580+32−3248.1%+11.637.7%318
53.9%
 Arasan 13.1 32-bit2578+32−3247.9%+13.937.5%312
51.2%
 RedQueen 0.9.8 32-bit2577+22−2249.6%+5.227.7%730
55.0%
 Cheng3 1.04 32-bit2575+32−3250.2%−2.034.0%326
58.5%
 Bobcat 20110414 32-bit2570+31−3149.4%+2.241.5%325
50.2%
 Scorpio 2.2 32-bit2570+28−2847.1%+20.135.3%417
50.4%
 DanaSah 5.072569+17−1749.9%−0.437.2%1191
57.7%
32Brutus 8.05 32-bit2567+17−1749.1%+4.136.8%1142
52.3%
 Cyrano 0.52566+31−3150.5%−2.535.9%326
52.1%
 Arasan 12.3 32-bit2565+24−2446.8%+23.530.0%597
49.1%
 CuckooChess 1.11 32-bit2565+29−2950.4%−2.534.1%384
52.8%
 Cheng3 1.06 32-bit2564+30−3047.3%+15.735.9%357
53.6%
 Bobcat 20110220 32-bit2562+32−3248.7%+7.735.0%311
55.5%
 Arasan 11.7 32-bit2559+32−3249.2%+5.736.0%308
49.0%
 Cheng3 1.05 32-bit2559+32−3248.0%+14.933.6%324
57.5%
 DanaSah 4.882555+22−2250.5%−3.133.9%676
58.5%
 DanaSah 5.002551+29−2948.5%+9.532.2%395
53.4%
 Crafty 21.6 32-bit2549+34−3447.8%+13.730.1%302
58.8%
 Betsabe II 1.842545+14−1448.3%+14.125.6%1851
56.9%
 Crafty 21.5 32-bit2542+32−3248.3%+13.628.5%344
53.2%
 DanaSah 4.602541+25−2548.5%+10.035.1%513
47.9%
 DanaSah 4.662541+26−2648.1%+12.035.2%475
52.3%
33Tucano 1.042540+30−3047.2%+17.636.5%359
54.9%
 Crafty 22.0 32-bit2538+33−3348.5%+9.631.9%304
48.4%
34Rodent 0.102538+33−3351.1%−9.631.9%313
52.2%
 Phalanx XXIV2537+20−2048.7%+7.927.3%887
54.9%
 Caligula 0.82536+20−2049.1%+6.326.3%938
54.8%
 K2 0.832534+27−2651.7%−12.733.3%474
51.3%
 Arasan 11.6 32-bit2533+33−3351.8%−12.732.6%304
52.8%
 Arasan 12.1 32-bit2531+33−3251.4%−11.927.3%326
50.2%
 CuckooChess 1.102531+31−3151.5%−11.734.5%330
58.3%
 DanaSah 4.242527+17−1751.5%−10.436.9%1128
67.5%
35EXchess 6.10b 32-bit2519+32−3349.4%+3.332.5%314
53.2%
 Crafty 20.14 32-bit2517+27−2747.4%+19.633.4%482
53.9%
 Brutus 7.02b2515+18−1952.0%−15.735.4%994
54.0%
 DanaSah 4.452514+29−2949.9%+1.038.4%378
48.6%
 DanaSah 5.062514+32−3249.5%+1.735.1%319
57.2%
 Arasan 10.0 32-bit2510+33−3349.0%+6.128.8%309
49.6%
 Crafty 20.13 32-bit2510+33−3348.7%+9.933.3%312
52.4%
 CuckooChess 1.092509+33−3351.6%−13.126.8%317
51.0%
 Betsabe II 1.752508+22−2251.8%−14.223.3%730
57.9%
 DanaSah 4.372504+32−3249.7%+2.438.3%321
54.3%
 Crafty 20.11 32-bit2502+34−3349.8%+3.630.0%307
49.8%
36Pawny 0.3.1 32-bit2502+33−3348.9%+8.028.7%310
52.0%
 Arasan 11.3 32-bit2501+33−3348.7%+7.730.9%301
55.3%
 Arasan 10.32498+23−2346.3%+26.930.4%652
56.0%
 Cheng3 1.03 32-bit2495+33−3250.6%−5.730.8%318
52.0%
37GreKo 9.2 32-bit2494+33−3349.7%+1.532.9%304
53.1%
 K2 0.752492+23−2352.4%−18.532.8%634
58.3%
38DoubleCheck 3.1 32-bit2488+34−3451.0%−8.424.8%306
50.6%
 Arasan 11.4 32-bit2487+33−3349.0%+8.328.5%305
50.6%
 GreKo 8.2 32-bit2487+26−2649.1%+5.533.8%506
61.8%
39Pepito 1.59 32-bit2482+24−2449.6%+0.734.0%583
54.1%
 Arasan 10.2 32-bit2480+24−2445.9%+31.727.8%632
56.3%
40BBChess 1.3b2477+24−2449.9%+0.738.4%567
59.8%
 BBChess 1.3a2473+25−2551.6%−12.830.5%528
54.4%
 Arasan 10.42471+21−2145.5%+32.430.0%850
54.0%
41Counter 1.22469+17−1748.2%+13.438.5%1139
63.3%
 Betsabe II 1.662465+22−2246.9%+22.228.2%728
55.3%
42Carballo 1.32462+25−2547.4%+18.331.0%561
52.4%
 Pawny 0.3 32-bit2461+33−3349.2%+3.834.3%303
51.9%
 Carballo 1.22460+23−2353.2%−20.730.0%654
50.5%
43Nemeton 1.82460+17−1751.9%−15.427.3%1250
48.8%
 Nemeton 1.812460+22−2247.3%+18.434.1%707
59.3%
 Counter 1.12457+23−2350.8%−8.637.7%632
58.3%
 Nemeton 1.512453+22−2249.8%−0.328.8%732
55.2%
 Cyrano 0.32451+34−3449.2%+4.123.8%311
51.0%
 GreKo 8.0 32-bit2450+29−2950.6%−3.829.7%411
56.1%
 Arasan 9.52446+35−3647.3%+17.223.7%291
56.3%
 Arasan 10.12443+27−2746.8%+28.428.5%508
48.8%
 Betsabe II 1.472443+20−2049.9%+2.325.3%902
52.9%
 Cheng3 1.02b2442+33−3350.2%−4.330.4%312
49.7%
44Typhoon 1.00-3482442+31−3148.9%+8.428.0%375
53.9%
 K2 0.792440+29−2947.4%+18.730.6%402
50.9%
 Nemeton 1.62439+24−2446.4%+25.431.8%604
58.8%
 Critter 0.382435+32−3251.1%−8.933.4%320
50.4%
 Typhoon 1.00-3582435+17−1748.2%+11.531.1%1220
54.0%
45Murka 2 32-bit2433+30−3047.4%+18.326.3%400
56.8%
 GreKo 7.2 32-bit2429+33−3348.4%+9.735.5%304
51.7%
 DanaSah 3.632428+27−2748.4%+10.432.3%477
52.6%
 Arasan 9.22427+34−3446.1%+27.430.9%304
53.3%
 Nemeton 1.612425+28−2847.3%+17.532.3%421
56.8%
 DanaSah 2.852421+33−3349.0%+8.433.8%305
51.3%
 Nemeton 1.72420+18−1849.6%+0.825.2%1141
53.1%
46Kiwi 0.6d 32-bit2419+19−1948.3%+10.227.0%975
51.9%
 K2 0.712418+28−2851.4%−9.127.6%439
59.8%
 Pawny 0.2.2 32-bit2413+34−3448.8%+8.628.6%301
51.7%
47Diablo 0.5.12412+18−1848.8%+8.132.4%1082
52.1%
 Typhoon 1.00-3142411+34−3450.2%−0.123.0%305
56.5%
48RomiChess P3k 32-bit2408+19−1949.2%+5.133.0%906
61.9%
49Amy 0.87b2403+24−2449.4%+6.725.7%610
49.8%
 Pawny 0.2.1 32-bit2403+31−3147.1%+19.925.5%373
51.1%
 Cyrano 0.2f2402+32−3348.4%+14.332.9%316
52.8%
 Pawny 0.2 32-bit2401+29−2949.2%+5.230.8%396
56.3%
50Simplex 0.9.8 32-bit2397+30−3149.0%+5.831.2%359
56.8%
 Phalanx XXII2394+24−2550.1%−1.223.5%595
69.2%
 DoubleCheck 2.5.4 32-bit2383+33−3350.5%−3.228.6%318
51.1%
 RomiChess P3L 32-bit2383+33−3346.3%+28.333.4%314
52.1%
51Thor's Hammer 2.28 32-bit2382+22−2248.7%+8.829.1%714
56.4%
 GreKo 6.302378+33−3348.0%+14.131.6%307
56.3%
 Carballo 1.1.12375+32−3247.5%+18.927.4%340
53.0%
 Counter 1.02373+32−3250.3%−4.035.3%312
50.3%
 Typhoon 1.00-2852373+34−3449.5%+2.220.1%314
52.7%
 GreKo 7.02371+28−2846.3%+28.927.8%454
49.9%
52Ifrit m1.5 32-bit2371+27−2846.6%+24.829.1%453
55.1%
 GreKo 6.252368+33−3348.5%+9.831.5%308
56.5%
 Phalanx XXIII2365+32−3246.3%+23.524.8%351
50.5%
 GreKo 6.52364+26−2648.9%+7.731.5%495
67.7%
 Nemeton 1.412356+25−2647.6%+18.233.7%514
51.3%
 K2 0.672355+23−2352.7%−17.529.7%677
51.8%
 Nemeton 1.32354+31−3152.1%−17.233.5%340
52.6%
 Counter 0.82353+32−3248.6%+10.535.6%312
56.3%
 GreKo 5.92349+24−2446.4%+28.429.3%621
60.4%
 Ifrit m1.6 32-bit2344+32−3247.5%+14.935.0%314
52.4%
53Xpdnt 0907042343+33−3351.8%−14.029.0%314
62.6%
 Daydreamer 1.52336+22−2252.1%−18.634.3%722
60.2%
 Nemeton 1.12331+29−2947.5%+17.231.3%393
55.9%
54Amundsen 0.802329+17−1749.1%+6.629.2%1269
60.9%
 Simplex 0.9.7 32-bit2324+31−3148.6%+9.425.4%370
70.1%
 GreKo 5.52311+33−3350.7%−5.033.1%305
54.1%
 Nemeton 1.22309+26−2646.3%+23.928.7%516
63.3%
 Brutus 6.12302+34−3448.4%+8.025.0%312
51.5%
 Xpdnt 0809272301+29−2951.2%−8.524.8%428
52.3%
55Natwarlal 0.142300+19−1948.7%+9.325.0%1035
64.7%
 Natwarlal 0.122293+34−3449.4%+6.926.6%308
49.4%
 Nemeton 1.02293+30−3052.6%−18.227.4%383
49.9%
 Pawny 0.1.62293+33−3352.1%−15.624.4%328
70.9%
 Brutus 5.42280+34−3450.7%−4.729.1%302
52.1%
 GreKo 5.2.52278+34−3451.3%−11.726.6%297
81.1%
56Sungorus 1.4 32-bit2260+21−2148.2%+12.426.5%820
59.3%
 Sungorus 1.3 32-bit2255+34−3452.7%−16.224.3%301
53.7%
57RattateChess 1.0 Nosferatu2253+19−1849.9%+1.327.8%1036
53.4%
 Brutus 6.02252+35−3548.8%+5.322.6%301
51.8%
 EXchess 5.01b 32-bit2251+29−2946.5%+21.031.2%401
74.9%
58Feuerstein 0.4.6.12239+19−1949.1%+5.628.5%944
52.9%
 Betsabe II 1.08c2237+35−3549.2%+8.321.0%300
72.3%
 Vajolet 1.62.12223+34−3447.7%+11.728.4%310
55.3%
59Bagatur 1.2d 32-bit2219+34−3446.8%+20.227.2%298
52.0%
60Beowulf 2.4a 32-bit2218+19−1953.4%−25.824.8%996
66.8%
61ZCT 0.3.24512211+27−2749.4%+3.925.5%478
52.1%
 Betsabe II 1.09c2210+34−3548.2%+11.619.8%308
56.8%
62Jazz 501 32-bit2206+29−2952.5%−18.228.5%418
58.5%
 RattateChess Bologna 20072201+25−2551.3%−9.225.0%588
52.1%
63MORA 1.0.02200+28−2752.5%−16.827.8%464
59.7%
 Carballo 0.82196+22−2247.2%+19.130.6%706
50.4%
 Jazz 444 32-bit2196+32−3250.3%−3.325.2%353
62.4%
 Amundsen 0.65.12188+34−3448.7%+8.223.9%305
50.6%
 Feuerstein 0.4.5.22188+37−3749.2%+8.724.7%255
50.0%
 K2 0.572188+33−3347.0%+22.025.8%314
56.5%
 MORA 1.1.02184+28−2845.6%+33.325.2%469
62.5%
 RedQueen 0.62178+30−3046.1%+27.219.9%418
53.7%
 Feuerstein 0.4.62175+38−3750.6%−1.718.5%259
51.7%
 Sungorus 1.22174+26−2652.4%−17.628.7%499
56.5%
 Pawny 0.132171+32−3252.2%−17.620.1%363
60.7%
 Simplex 0.9.3 32-bit2164+34−3448.9%+8.824.8%315
57.3%
 Betsabe II 1.052160+34−3445.2%+33.224.2%314
53.6%
64OliThink 5.1.92158+30−3046.6%+27.321.3%417
51.6%
 Bagatur 1.2b 32-bit2157+33−3446.2%+28.229.1%306
53.4%
65Chesley r323 32-bit2155+24−2448.9%+8.920.7%641
59.0%
 Ifrit j4.32151+28−2845.9%+28.029.5%440
68.7%
 K2 0.43f2140+33−3348.2%+11.921.3%338
54.2%
66Prophet 2.0 32-bit2138+19−1949.3%+4.624.0%1025
55.4%
67Parrot 07.01.162136+31−3146.6%+25.421.1%394
48.5%
 Parrot 07.07.222136+19−1947.3%+20.123.0%1047
72.7%
 Ifrit j4.22124+34−3445.5%+31.626.4%303
64.7%
 DoubleCheck 2.1 32-bit2115+33−3346.3%+30.921.8%362
54.2%
68ChessKISS 1.3a 32-bit2113+32−3347.0%+18.430.3%320
77.7%
 Carballo 0.52097+23−2347.1%+20.521.9%694
78.2%
 Ifrit j2.92081+34−3448.2%+11.821.3%314
51.1%
 Feuerstein 0.4.5.12080+38−3848.0%+12.925.8%248
52.8%
69AdroitChess 0.42079+22−2256.2%−58.315.3%844
92.3%
 ZCT 0.3.25002050+32−3246.2%+29.716.8%381
53.0%
70PLP 16615712048+22−2246.2%+27.724.2%768
59.7%
71Jabba 1.0 32-bit2045+21−2144.8%+38.225.0%839
84.7%
72Faile 1.4.42028+23−2355.2%−28.022.1%774
55.1%
73Slibo 0.5.12026+26−2645.5%+33.619.4%573
91.5%
74BibiChess 0.52001+24−2445.7%+31.626.5%607
61.2%
75Cupcake 1.01995+31−3145.5%+31.722.7%401
54.4%
76Schola 1.1.0 32-bit1993+26−2745.6%+32.425.1%514
54.1%
 MagiC 1.01986+130−15122.7%+197.218.2%22
51.0%
 AdroitChess 0.31984+25−2544.2%+46.118.5%626
84.8%
77Dabbaba 5.671965+25−2545.5%+33.926.4%557
65.0%
78Sissa 2.01959+23−2353.1%−23.230.1%678
57.1%
 Feuerstein 0.4.4.21955+29−2941.2%+92.018.7%518
49.3%
79Monik 2.2.3 32-bit1955+30−3044.4%+39.727.1%395
52.8%
80Wowl 1.3.81954+26−2745.4%+35.313.3%573
55.1%
81Smash 1.0.31951+26−2740.8%+74.617.8%574
68.7%
82Micro-Max 4.8 (DM-PII)1943+20−2048.3%+12.826.1%865
59.5%
 Dabbaba 6.521940+22−2248.6%+10.820.3%777
62.7%
83Eia 0.31935+20−2047.1%+22.224.4%914
71.2%
 Wowl 1.3.71925+25−2546.8%+25.211.7%630
76.1%
 Carballo 0.41910+32−3335.8%+104.234.8%342
55.5%
 Dabbaba 7.491908+12−1147.8%+17.119.9%3152
53.5%
 Jabba 130320121906+31−3139.1%+98.016.7%442
57.9%
84ChessterfieldCL i5a1902+24−2540.6%+73.920.4%657
69.2%
 Micro-Max 4.81893+28−2836.7%+102.524.7%493
77.4%
85CDrill 1800 build 41878+23−2441.4%+73.615.5%741
100.0%
86RataAeroespacial 0.2.11816+13−1342.5%+64.112.9%2478
100.0%
87TSCP 1.811693+20−2047.4%+21.417.0%1072
84.4%
88Spartan 1.01675+25−2563.5%−103.321.2%624
67.4%
89Philemon C1667+25−2562.3%−94.722.0%626
59.4%
90VanillaChess 2.6g1663+25−2561.5%−89.220.2%624
100.0%
91PolarChess 1.31575+25−2549.3%+3.016.9%629
56.3%
92Darky 0.5d1572+24−2443.5%+55.820.8%677
98.7%
93MSCP 1.6h1530+25−2544.0%+50.415.1%628
99.8%
94Apep 1.011479+25−2541.2%+72.810.1%683
100.0%
95BACE 0.461379+23−2421.5%+256.79.8%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 3.743066            
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 GTX10503463 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2ChessBrainVB 3.7430660.0 92.9100.0100.0100.0100.0100.0100.0100.0100.0100.0
3Stockfish 2.2.2 32-bit30500.07.1 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 75.588.1100.0100.0100.0
8Booot 5.1.028440.00.00.00.00.00.024.5 80.9100.0100.0100.0
9MinkoChess 1.3 32-bit28290.00.00.00.00.00.011.919.1 100.099.9100.0
10Glaurung 2.1 32-bit27650.00.00.00.00.00.00.00.00.0 50.987.6
11Texel 1.01 32-bit27640.00.00.00.00.00.00.00.00.149.1 81.2
12Scorpio 2.7 32-bit27490.00.00.00.00.00.00.00.00.012.418.8 
LOS color legend:
0 10 20 30 40 50 60 70 80 90 100

Alter engine selection



Alter output selection

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

Maximum size of cross-tables (from 2 to 100):
Limit crosstables to engines in Elo range: to
Match length (Minimum number of games to highlight with color):

Cross-tables show only best version of each engine
Sort cross-tables by:   Rating   Name
Highlight diagonal of cells wide. (0 to highlight everything)

Reference rating list:
Recalibrate:
  No recalibration (reference and current list are compared as they are)
  Recalibrate reference list to current one using selected engines only
  Recalibrate reference list to current one using all common engines
  Recalibrate current list to reference using selected engines only
  Recalibrate current list to reference using all common engines


Created in 2005-2013 by CCRL team
Last games added on July 11, 2020