CCRL 40/15
Downloads and Statistics
January 24, 2021
Testing summary:
Total: 1'209'412 games
played by 2'772 programs

White wins: 415'904 (34.4%)
Black wins: 306'459 (25.3%)
Draws: 487'049 (40.3%)
White score: 54.5%

Open source 32-bit engines

Comparing 355 engines!
94 best versions of selected engines played 3455 games with each other

CCRL 40/15 Rating List — Open source 32-bit 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 January 24, 2021 with Bayeselo based on 1'209'412 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 3.72 4CPU3167+30−3045.0%+30.551.3%320 
51.9%
 ChessBrainVB 3.74 4CPU3164+128−13046.9%+17.056.3%16
72.5%
 ChessBrainVB 3.68 4CPU3123+26−2649.2%+4.351.6%428
81.9%
 ChessBrainVB 3.66 4CPU3105+28−2854.2%−27.048.7%378
99.3%
 ChessBrainVB 3.743065+15−1548.3%+9.250.4%1378
65.3%
 ChessBrainVB 3.723060+15−1551.2%−9.543.6%1423
85.9%
2Stockfish 2.2.2 32-bit3049+14−1461.4%−73.948.4%1619
57.6%
 Sting SF 4.63046+30−3045.4%+28.747.0%334
56.2%
 ChessBrainVB 3.703043+23−2351.1%−10.348.1%551
61.0%
 Stockfish 2.3.1 32-bit3039+17−1757.2%−45.050.5%1095
62.6%
 ChessBrainVB 3.663034+23−2351.5%−9.951.2%568
69.3%
 Stockfish 2.1.1 32-bit3027+16−1563.5%−90.143.1%1390
51.9%
 Sting SF 4.73026+22−2244.9%+30.950.2%646
55.2%
 ChessBrainVB 3.683024+21−2150.1%−0.954.3%654
56.2%
3IvanHoe 9.46h 32-bit3022+13−1355.8%−37.053.6%1668
84.9%
 Stockfish 2.0.1 32-bit3011+17−1664.6%−95.246.1%1176
77.7%
 Sting SF 2 32-bit3002+17−1751.3%−9.751.2%1062
55.2%
 Stockfish 1.9.1 32-bit3000+16−1663.9%−89.847.2%1302
83.5%
 Stockfish 1.8 32-bit2989+17−1664.5%−92.147.5%1172
56.8%
 ChessBrainVB 3.612986+27−2749.3%+4.447.7%421
62.8%
4Gull II b2 32-bit2981+18−1846.8%+18.952.6%960
56.5%
 ChessBrainVB 3.502979+24−2352.4%−16.346.7%553
53.5%
 Gull II 32-bit2977+18−1846.0%+22.557.1%854
54.3%
 Stockfish 1.7.1 32-bit2976+16−1664.3%−94.445.9%1338
97.2%
5Protector 1.5.0 32-bit2947+25−2545.2%+27.451.7%470
81.4%
 Stockfish 1.6.3 32-bit2933+17−1660.7%−67.748.0%1140
84.8%
6Toga II 3.0 4CPU2918+22−2345.6%+27.349.0%592
57.9%
 ChessBrainVB 3.312915+25−2552.6%−14.745.1%503
78.2%
 Toga II 1.4.1SE 4CPU2903+13−1348.5%+10.941.6%2041
97.8%
 Gull 1.0a 32-bit2885+12−1245.7%+29.243.7%2290
51.3%
 Toga II 1.4 beta5c 4CPU2884+18−1851.7%−11.645.8%996
73.1%
 Protector 1.4.0 32-bit2878+11−1145.6%+29.741.0%2812
55.3%
 Gull 1.1 32-bit2876+17−1747.4%+16.548.9%1051
50.4%
 Gull 1.2 32-bit2876+12−1245.9%+27.542.3%2340
59.5%
 ChessBrainVB 3.202873+25−2550.3%−2.747.4%489
57.2%
 Gull 0.12a 32-bit2870+21−2149.4%+2.744.8%717
70.2%
 Stockfish 1.5.1 32-bit2863+15−1554.8%−31.442.9%1530
89.1%
 Toga II 3.02850+16−1648.1%+10.542.9%1311
58.4%
 Gull 0.11a 32-bit2847+20−2146.8%+17.646.8%722
60.0%
7Booot 5.1.02844+10−1045.9%+28.141.3%3429
81.7%
8MinkoChess 1.3 32-bit2829+31−3146.0%+25.045.5%314
48.9%
 Stockfish 1.4 32-bit2829+16−1653.6%−23.149.1%1168
53.2%
 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
54.0%
 Grapefruit 1.0 32-bit2826+9−948.4%+10.047.7%3991
47.3%
 Toga II 1.4.1SE2826+12−1250.0%+2.043.5%2395
56.8%
 Booot 5.02824+15−1545.4%+28.243.3%1366
50.8%
 Protector 1.3.4 32-bit2824+15−1545.7%+28.046.1%1364
53.8%
 Cyclone xTreme2823+13−1344.2%+38.245.8%2009
54.6%
 Cyclone 3.42822+21−2151.5%−9.047.2%685
51.4%
 ChessBrainVB 3.032821+25−2549.9%−1.840.8%512
52.5%
 Cyclone xTreme Rage2820+25−2548.4%+9.446.8%476
49.4%
 Toga II 1.4.1SE62820+23−2350.4%+0.445.1%567
62.8%
 Cyclone 2.22814+28−2849.1%+5.747.4%382
50.4%
 Toga II 3.1.2SE2814+17−1752.7%−18.243.4%1059
73.2%
 TheMadPrune 1.1.252805+24−2451.4%−10.348.0%504
55.9%
 Toga II 1.4 beta5c2802+23−2352.9%−18.945.9%564
51.9%
 Protector 1.3.1b 32-bit2801+23−2348.8%+9.043.6%608
64.9%
 Protector 1.3.2 32-bit2795+21−2145.7%+26.050.4%659
55.7%
 Stockfish 1.3.1 32-bit2793+25−2546.1%+25.041.4%512
60.7%
 Toga II 1.3.12789+11−1150.0%−1.042.1%2565
67.2%
 Grapefruit 1.0a32781+31−3248.1%+11.741.6%315
51.8%
 Cyclone 1.02780+32−3251.0%−7.239.3%300
51.1%
 MinkoChess 1.2 32-bit2780+14−1445.4%+31.640.6%1785
49.0%
 Stockfish 1.2 Default2780+21−2146.1%+23.944.5%679
76.8%
 Toga II 1.3.42767+28−2852.9%−18.542.1%411
55.3%
9Glaurung 2.1 32-bit2765+18−1846.3%+24.739.5%1067
50.9%
10Texel 1.01 32-bit2764+28−2852.2%−18.235.0%432
62.6%
 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
64.0%
11Scorpio 2.7 32-bit2749+20−2049.0%+8.636.2%826
56.2%
 Stockfish 1.012746+31−3150.5%−5.843.8%322
53.9%
 MinkoChess 1.0 32-bit2744+32−3249.8%+1.141.1%314
56.8%
 MinkoChess 1.1 32-bit2740+27−2745.7%+26.540.9%455
54.9%
 Glaurung 2.0.1 32-bit2738+17−1747.2%+16.840.6%1196
57.7%
 Toga II 1.2 32-bit2735+25−2552.4%−18.737.2%511
57.0%
12Crafty 23.4 32-bit2732+19−1950.8%−5.140.4%861
53.1%
 Scorpio 2.0 32-bit 4CPU2731+24−2433.4%+114.936.7%607
49.6%
 Toga II 1.1a 32-bit2731+16−1652.8%−18.838.9%1275
63.2%
13Bison 9.11 32-bit2727+14−1448.5%+10.437.2%1810
75.2%
 Crafty 23.3 32-bit2715+32−3250.5%−4.041.4%309
68.4%
14Critter 0.42 32-bit2705+25−2551.9%−12.441.1%494
67.8%
 Glaurung 2 epsilon/5 32-bit2697+27−2748.1%+10.435.8%441
50.4%
 Booot 4.15.12696+30−3046.1%+24.242.1%359
52.2%
 Crafty 23.2 32-bit2695+32−3247.8%+16.040.0%320
50.5%
15‑16DanaSah 8.32695+19−1947.5%+13.438.9%902
50.4%
 Fruit 2.12695+25−2551.5%−14.237.2%522
49.1%
15‑16K2 0.992695+25−2540.3%+65.034.8%523
56.0%
 Booot 4.15.02693+14−1445.9%+26.544.9%1651
49.8%
 Scorpio 2.6 32-bit2693+31−3148.9%+7.541.7%321
53.2%
17Vajolet 2.482691+31−3148.9%+5.533.9%348
59.6%
 Crafty 23.1 32-bit2687+18−1846.2%+24.442.2%970
54.9%
18Bobcat 3.25 32-bit2684+31−3146.9%+23.032.2%351
68.0%
 MinkoChess 0.8 32-bit2674+33−3351.3%−13.541.5%301
59.4%
 ChessBrainVB 2.052669+23−2349.6%+1.336.1%609
50.0%
 Scorpio 1.92669+31−3150.1%−4.034.0%362
50.6%
 Glaurung 1.2.1 Avalanche 32-bit2668+32−3252.1%−16.235.4%328
51.8%
19Daydreamer 1.75 32-bit2667+17−1747.7%+14.941.2%1157
50.4%
 Scorpio 1.842667+32−3247.2%+9.429.9%354
51.9%
 Booot 4.14.02666+20−2051.4%−9.341.8%765
56.1%
 Glaurung 1.2.1 Crusader 32-bit2663+32−3251.6%−14.028.6%343
50.7%
 K2 0.952663+16−1648.2%+11.932.8%1297
50.1%
 Scorpio 2.5 32-bit2663+32−3249.5%+4.142.3%307
54.0%
 Scorpio 1.912661+14−1345.7%+29.036.7%1899
52.3%
 Vajolet 2.032660+24−2451.2%−10.933.8%562
53.5%
 Bobcat 2.75 32-bit2659+24−2447.7%+15.036.9%558
60.1%
 Glaurung 1.2.1 32-bit2655+17−1746.4%+23.833.6%1265
50.5%
 Scorpio 2.02b2655+30−3047.3%+17.137.2%355
54.6%
 Scorpio 2.0 32-bit2653+17−1746.0%+28.334.3%1270
52.1%
 Scorpio 2.1 32-bit2652+34−3449.1%+4.738.2%280
58.6%
20Cyrano 0.6b17 32-bit2648+14−1448.6%+8.440.5%1653
57.6%
 Scorpio 1.812644+34−3449.8%+5.631.4%299
57.2%
 Scorpio 1.82641+20−2047.3%+18.235.7%869
52.9%
 DanaSah 7.32640+14−1449.4%+4.534.8%1709
57.6%
21RedQueen 1.0.0 32-bit2637+24−2451.6%−7.835.9%576
51.8%
 Scorpio 2.05b2636+32−3250.5%−2.040.8%306
51.3%
 DanaSah 7.92635+20−2049.2%+5.227.3%944
51.9%
 Glaurung 1.0.2 32-bit2635+17−1747.4%+19.732.0%1209
62.9%
22‑23Cheng3 1.07 32-bit2630+26−2646.6%+22.031.7%517
49.2%
 Crafty 23.0 32-bit2630+29−2949.9%+1.341.3%380
49.8%
22‑23Nawito 19062630+20−2050.2%−0.235.5%823
53.3%
24Delfi 5.12629+25−2546.3%+23.333.9%522
54.5%
 Glaurung 1.1 32-bit2626+32−3348.8%+10.732.1%324
55.7%
25Arasan 13.4 32-bit2623+30−3049.7%+1.434.8%374
57.7%
 Bison 9.62619+23−2351.3%−13.333.9%635
51.4%
26Phalanx XXV2619+15−1549.6%+2.132.3%1501
52.2%
27Caligula 0.9g2618+21−2153.7%−28.329.8%784
50.8%
 DanaSah 7.02618+26−2651.3%−10.237.8%479
51.8%
 Arasan 14.1 32-bit2617+33−3349.0%+4.333.3%309
51.4%
 Bison 9.8 32-bit2616+32−3349.8%−1.333.7%309
49.6%
 K2 0.912616+15−1549.0%+7.032.9%1497
66.6%
 Arasan 13.2 32-bit2608+32−3251.0%−5.638.5%312
50.6%
 Nawito 20122607+110−11048.1%+11.129.6%27
51.2%
28Betsabe II 20202606+29−2949.4%+2.732.9%389
51.2%
 DanaSah 6.502605+22−2249.7%+1.036.0%691
51.4%
 Scorpio 1.72604+32−3249.7%+0.338.1%310
53.4%
 DanaSah 6.802603+28−2850.5%−2.840.3%412
56.7%
 Delfi 5.02600+20−2047.5%+14.837.1%805
52.0%
 Nawito 18122599+20−2048.3%+11.833.0%892
49.6%
29Sloppy 0.2.2 32-bit2599+14−1448.1%+12.137.8%1775
56.2%
 Crafty 22.8 32-bit2596+32−3248.7%+7.135.9%315
56.4%
 Betsabe II 1.962593+21−2151.0%−6.426.4%828
57.7%
30CuckooChess 1.12 32-bit2590+25−2548.8%+8.529.7%539
55.2%
 Booot 4.13.12587+28−2849.4%+1.939.9%404
53.0%
 RedQueen 1.1.1 32-bit2586+33−3250.6%−0.735.7%308
51.5%
 Nawito 1.1d2585+28−2850.2%−2.636.7%401
53.0%
 K2 0.872584+17−1849.0%+5.534.7%1102
57.6%
 Crafty 22.4 32-bit2580+32−3248.1%+11.737.7%318
52.9%
 Arasan 13.1 32-bit2578+32−3247.9%+14.637.5%312
52.7%
 RedQueen 0.9.8 32-bit2577+22−2249.6%+5.127.7%730
54.5%
 Cheng3 1.04 32-bit2575+32−3250.2%−1.934.0%326
58.6%
 Bobcat 20110414 32-bit2570+31−3149.4%+2.441.5%325
50.3%
 Scorpio 2.2 32-bit2570+28−2847.1%+20.235.3%417
50.6%
 DanaSah 5.072569+17−1749.9%−0.337.2%1191
57.8%
31Brutus 8.05 32-bit2567+17−1749.1%+4.036.8%1142
52.2%
 Cyrano 0.52566+31−3150.5%−2.635.9%326
52.0%
 Arasan 12.3 32-bit2565+24−2446.8%+23.730.0%597
49.2%
 CuckooChess 1.11 32-bit2565+29−2950.4%−2.534.1%384
52.6%
 Cheng3 1.06 32-bit2564+30−3047.3%+15.935.9%357
52.8%
 Bobcat 20110220 32-bit2562+32−3248.7%+8.235.0%311
56.6%
 Arasan 11.7 32-bit2559+32−3249.2%+5.536.0%308
48.8%
 Cheng3 1.05 32-bit2559+32−3248.0%+14.933.6%324
57.6%
 DanaSah 4.882555+22−2250.5%−3.033.9%676
58.0%
 DanaSah 5.002552+29−2948.5%+8.732.2%395
53.6%
 Crafty 21.6 32-bit2550+34−3447.8%+12.830.1%302
58.7%
 Betsabe II 1.842545+14−1448.3%+14.225.6%1851
56.5%
 Crafty 21.5 32-bit2543+32−3248.3%+12.928.5%344
53.8%
 DanaSah 4.602541+25−2548.5%+10.135.1%513
48.0%
 DanaSah 4.662541+26−2648.1%+12.035.2%475
52.1%
32Tucano 1.042540+30−3047.2%+17.836.5%359
53.1%
33Rodent 0.102539+33−3351.1%−10.531.9%313
51.7%
 Crafty 22.0 32-bit2538+33−3348.5%+9.631.9%304
50.3%
 Phalanx XXIV2537+20−2048.7%+8.027.3%887
56.2%
 Caligula 0.82535+20−2049.1%+7.026.3%938
53.8%
 K2 0.832534+27−2751.7%−12.733.3%474
51.6%
 Arasan 11.6 32-bit2533+33−3351.8%−12.832.6%304
52.7%
 Arasan 12.1 32-bit2531+33−3251.4%−11.927.3%326
50.2%
 CuckooChess 1.102531+31−3151.5%−11.734.5%330
52.0%
34Nemeton 1.8 4CPU2530+27−2749.9%+1.727.2%496
56.8%
 DanaSah 4.242527+17−1751.5%−10.636.9%1128
66.9%
35EXchess 6.10b 32-bit2519+32−3349.4%+3.432.5%314
53.0%
 Crafty 20.14 32-bit2517+27−2747.4%+19.833.4%482
54.5%
 Brutus 7.02b2515+18−1952.0%−15.735.4%994
52.0%
 DanaSah 5.062514+32−3249.5%+1.835.1%319
51.5%
 DanaSah 4.452513+29−2949.9%+2.038.4%378
54.9%
 Crafty 20.13 32-bit2511+33−3348.7%+9.333.3%312
50.9%
 Arasan 10.0 32-bit2510+33−3349.0%+6.228.8%309
53.0%
 Betsabe II 1.752509+22−2251.8%−14.923.3%730
49.4%
 CuckooChess 1.092509+33−3351.6%−12.926.8%317
57.6%
 DanaSah 4.372504+32−3149.7%+2.438.3%321
54.0%
 Crafty 20.11 32-bit2502+34−3449.8%+3.830.0%307
50.3%
36Pawny 0.3.1 32-bit2502+33−3348.9%+8.028.7%310
51.7%
 Arasan 11.3 32-bit2501+33−3348.7%+7.930.9%301
55.3%
 Arasan 10.32498+23−2346.3%+26.930.4%652
56.0%
 Cheng3 1.03 32-bit2495+33−3350.6%−5.630.8%318
52.3%
37GreKo 9.2 32-bit2494+33−3349.7%+1.432.9%304
52.4%
 K2 0.752492+23−2352.4%−18.132.8%634
58.7%
38DoubleCheck 3.1 32-bit2488+34−3451.0%−8.324.8%306
51.0%
 Arasan 11.4 32-bit2487+33−3349.0%+8.228.5%305
50.4%
 GreKo 8.2 32-bit2487+26−2649.1%+5.533.8%506
62.4%
39Pepito 1.59 32-bit2481+24−2449.6%+1.534.0%583
52.9%
 Arasan 10.2 32-bit2480+23−2345.9%+31.528.0%664
64.3%
40BBChess 1.3b2474+23−2349.2%+5.737.9%589
52.8%
 BBChess 1.3a2473+25−2551.6%−12.930.5%528
54.2%
 Arasan 10.42471+20−2045.8%+29.629.8%866
54.5%
41Counter 1.22469+17−1748.2%+13.338.5%1139
62.9%
 Betsabe II 1.662465+22−2246.9%+22.228.2%728
48.2%
 Nemeton 1.812465+19−1946.9%+20.533.8%939
53.1%
42Carballo 1.22464+22−2252.9%−19.030.4%690
53.2%
 Carballo 1.32463+25−2547.4%+17.631.0%561
52.6%
 Pawny 0.3 32-bit2461+33−3349.2%+4.034.3%303
53.0%
 Nemeton 1.82460+17−1751.9%−15.327.3%1250
59.6%
 Counter 1.12456+23−2350.8%−7.737.7%632
57.2%
 Nemeton 1.512453+22−2249.8%−0.128.8%732
55.2%
 Cyrano 0.32451+34−3449.2%+4.323.8%311
51.3%
 GreKo 8.0 32-bit2450+29−2950.6%−3.729.7%411
55.4%
 Arasan 9.52447+36−3647.3%+16.523.7%291
53.6%
43Typhoon 1.00-3482445+30−3048.5%+11.427.2%401
52.2%
 Betsabe II 1.472444+20−2049.9%+1.725.3%902
51.6%
 Arasan 10.12443+27−2746.8%+28.628.5%508
51.7%
 Cheng3 1.02b2442+33−3350.2%−4.130.4%312
52.8%
 K2 0.792440+29−2947.4%+19.330.6%402
52.1%
 Nemeton 1.62439+24−2446.4%+25.431.8%604
58.8%
 Critter 0.382435+32−3251.1%−9.033.4%320
50.4%
 Typhoon 1.00-3582435+17−1748.2%+11.431.1%1220
53.9%
44Murka 2 32-bit2433+30−3047.4%+18.426.3%400
56.9%
 GreKo 7.2 32-bit2429+33−3348.4%+9.735.5%304
51.7%
 DanaSah 3.632428+27−2748.4%+10.532.3%477
52.2%
 Arasan 9.22427+34−3446.1%+27.630.9%304
53.4%
 Nemeton 1.612425+28−2847.3%+17.832.3%421
56.4%
 DanaSah 2.852421+33−3349.0%+8.833.8%305
50.7%
45Kiwi 0.6d 32-bit2421+19−1948.4%+9.227.0%981
52.7%
 Nemeton 1.72420+18−1849.6%+0.825.2%1141
53.1%
 K2 0.712419+28−2851.4%−9.727.6%439
60.2%
 Pawny 0.2.2 32-bit2413+34−3448.8%+8.728.6%301
52.4%
46Diablo 0.5.12412+18−1848.6%+9.332.3%1088
50.5%
 Typhoon 1.00-3142412+34−3450.2%−0.623.0%305
57.6%
47RomiChess P3k 32-bit2408+19−1949.2%+5.033.0%906
61.6%
48Amy 0.87b2403+24−2449.4%+6.925.7%610
50.9%
 Cyrano 0.2f2403+32−3248.4%+13.532.9%316
49.1%
 Pawny 0.2.1 32-bit2403+31−3147.1%+20.025.5%373
54.2%
 Pawny 0.2 32-bit2401+29−2949.2%+5.230.8%396
56.0%
49Simplex 0.9.8 32-bit2398+30−3149.0%+4.931.2%359
56.8%
 Phalanx XXII2394+25−2550.1%−1.023.5%595
69.2%
 DoubleCheck 2.5.4 32-bit2383+33−3350.5%−3.028.6%318
51.1%
 RomiChess P3L 32-bit2383+33−3346.3%+28.333.4%314
49.0%
50Thor's Hammer 2.28 32-bit2383+22−2249.0%+7.328.8%730
59.6%
 GreKo 6.302378+33−3348.0%+14.131.6%307
56.0%
 Carballo 1.1.12375+32−3247.5%+19.127.4%340
53.0%
 Counter 1.02373+32−3250.3%−3.835.3%312
50.0%
 Typhoon 1.00-2852373+34−3449.5%+2.520.1%314
53.2%
 GreKo 7.02371+28−2846.3%+29.027.8%454
49.9%
51Ifrit m1.5 32-bit2371+27−2846.6%+24.929.1%453
55.2%
 GreKo 6.252368+33−3348.5%+9.931.5%308
56.1%
 Phalanx XXIII2365+32−3246.3%+23.724.8%351
51.0%
 GreKo 6.52364+26−2648.9%+7.731.5%495
62.7%
52OliThink 5.3.0 32-bit2359+21−2149.3%+4.025.0%827
55.9%
 Nemeton 1.412356+25−2647.6%+18.833.7%514
52.3%
 K2 0.672355+23−2352.7%−17.429.7%677
51.6%
 Nemeton 1.32354+31−3152.1%−17.033.5%340
52.9%
 Counter 0.82353+32−3248.6%+10.535.6%312
61.2%
 GreKo 5.92347+23−2346.6%+26.129.3%635
55.6%
 Ifrit m1.6 32-bit2344+32−3247.5%+14.935.0%314
52.4%
53Xpdnt 0907042343+33−3351.8%−13.929.0%314
62.5%
 Daydreamer 1.52336+22−2252.1%−18.534.3%722
59.9%
 Nemeton 1.12332+29−2947.5%+16.531.3%393
56.8%
54Amundsen 0.802329+17−1749.1%+6.629.2%1269
60.7%
 Simplex 0.9.7 32-bit2324+31−3148.6%+9.425.4%370
70.0%
 GreKo 5.52312+33−3350.7%−5.933.1%305
54.1%
 Nemeton 1.22309+26−2646.3%+24.028.7%516
63.6%
 Brutus 6.12302+34−3448.4%+7.925.0%312
51.3%
 Xpdnt 0809272301+29−2951.2%−8.424.8%428
54.9%
55Natwarlal 0.142299+19−1948.5%+11.225.0%1045
62.5%
 Natwarlal 0.122293+34−3449.4%+7.026.6%308
49.5%
 Nemeton 1.02293+30−3052.6%−18.227.4%383
49.6%
 Pawny 0.1.62293+33−3352.1%−15.324.4%328
71.1%
 Brutus 5.42280+34−3450.7%−4.829.1%302
51.9%
 GreKo 5.2.52278+34−3451.3%−11.726.6%297
81.3%
56Sungorus 1.4 32-bit2260+21−2148.2%+12.426.5%820
59.6%
 Sungorus 1.3 32-bit2255+34−3452.7%−16.324.3%301
53.5%
57RattateChess 1.0 Nosferatu2253+19−1849.9%+1.227.8%1036
53.3%
 Brutus 6.02252+35−3548.8%+5.322.6%301
51.6%
 EXchess 5.01b 32-bit2251+29−2946.5%+21.131.2%401
75.2%
58Feuerstein 0.4.6.12239+19−1949.1%+5.628.5%944
53.0%
 Betsabe II 1.08c2237+35−3549.2%+8.321.0%300
72.1%
 Vajolet 1.62.12223+34−3447.7%+11.828.4%310
55.5%
59‑60Bagatur 1.2d 32-bit2219+34−3446.8%+20.127.2%298
51.2%
59‑60Beowulf 2.4a 32-bit2219+19−1953.3%−25.825.0%1008
67.6%
61ZCT 0.3.24512211+27−2749.4%+3.825.5%478
52.5%
 Betsabe II 1.09c2209+34−3548.2%+12.419.8%308
56.7%
62Jazz 501 32-bit2206+29−2952.5%−18.428.5%418
58.3%
 RattateChess Bologna 20072201+25−2551.3%−9.325.0%588
53.5%
63MORA 1.0.02200+27−2752.3%−15.828.3%488
58.5%
 Carballo 0.82196+22−2247.2%+19.130.6%706
50.5%
 Jazz 444 32-bit2196+32−3250.3%−3.425.2%353
62.3%
 Amundsen 0.65.12188+34−3448.7%+8.023.9%305
50.6%
 Feuerstein 0.4.5.22188+37−3749.2%+8.624.7%255
50.0%
 K2 0.572188+33−3347.0%+22.125.8%314
57.0%
 MORA 1.1.02184+27−2845.3%+36.225.0%476
62.4%
 RedQueen 0.62177+30−3046.1%+28.019.9%418
53.1%
 Feuerstein 0.4.62175+38−3850.6%−1.618.5%259
52.0%
 Sungorus 1.22174+26−2652.4%−17.728.7%499
56.4%
 Pawny 0.132171+32−3252.2%−17.820.1%363
60.9%
 Simplex 0.9.3 32-bit2164+34−3448.9%+8.724.8%315
57.2%
 Betsabe II 1.052160+34−3445.2%+33.224.2%314
53.7%
 OliThink 5.1.92158+30−3046.6%+27.121.3%417
51.7%
 Bagatur 1.2b 32-bit2157+33−3446.2%+27.929.1%306
53.4%
64Chesley r323 32-bit2155+24−2448.9%+8.620.7%641
58.9%
 Ifrit j4.32151+28−2845.9%+27.929.5%440
68.7%
 K2 0.43f2140+33−3348.2%+11.621.3%338
54.2%
65Prophet 2.0 32-bit2138+19−1949.3%+4.524.0%1025
55.4%
66Parrot 07.07.222136+19−1947.3%+19.923.0%1047
51.5%
 Parrot 07.01.162135+31−3146.6%+26.221.1%394
68.6%
 Ifrit j4.22124+34−3445.5%+31.326.4%303
64.7%
 DoubleCheck 2.1 32-bit2115+33−3346.3%+30.621.8%362
54.2%
67ChessKISS 1.3a 32-bit2112+32−3347.0%+19.130.3%320
77.7%
 Carballo 0.52097+23−2347.1%+20.321.9%694
78.2%
 Ifrit j2.92081+34−3448.2%+11.421.3%314
51.1%
 Feuerstein 0.4.5.12080+38−3848.0%+12.525.8%248
51.9%
68AdroitChess 0.42079+22−2256.0%−56.315.3%858
92.7%
 ZCT 0.3.25002050+32−3246.2%+29.416.8%381
53.2%
69PLP 16615712048+22−2246.2%+27.424.2%768
59.8%
70Jabba 1.0 32-bit2044+21−2144.8%+38.925.0%839
85.2%
71Faile 1.4.42028+23−2355.2%−28.522.1%774
54.2%
72Slibo 0.5.12026+26−2645.5%+33.319.4%573
91.6%
73BibiChess 0.52001+24−2445.7%+31.226.5%607
61.2%
74Cupcake 1.01995+31−3145.5%+31.322.7%401
54.3%
75Schola 1.1.0 32-bit1993+26−2645.6%+32.125.1%514
68.9%
 AdroitChess 0.31983+25−2544.2%+46.818.5%626
85.0%
76Dabbaba 5.671965+25−2545.5%+33.326.4%557
65.8%
77Sissa 2.01958+23−2353.1%−23.030.1%678
56.1%
 Feuerstein 0.4.4.21955+29−2941.2%+91.818.7%518
49.3%
78Monik 2.2.3 32-bit1955+30−3044.4%+39.327.1%395
53.8%
79Wowl 1.3.81953+26−2745.4%+35.413.3%573
54.1%
80Smash 1.0.31951+26−2640.8%+74.417.8%574
69.0%
81Micro-Max 4.8 (DM-PII)1943+20−2048.3%+12.426.1%865
59.4%
 Dabbaba 6.521939+22−2248.6%+11.320.3%777
63.3%
82Eia 0.31934+20−2047.1%+22.424.4%914
71.0%
 Wowl 1.3.71925+25−2546.8%+24.611.7%630
75.9%
 Carballo 0.41910+32−3335.8%+103.734.8%342
55.8%
 Dabbaba 7.491907+11−1247.8%+17.419.9%3152
53.0%
 Jabba 130320121906+31−3139.1%+97.616.7%442
58.8%
83ChessterfieldCL i5a1901+24−2440.6%+74.020.4%657
68.3%
 Micro-Max 4.81892+28−2836.7%+103.224.7%493
78.0%
84CDrill 1800 build 41878+23−2441.4%+72.715.5%741
100.0%
85RataAeroespacial 0.2.11815+13−1342.5%+64.412.9%2478
100.0%
86TSCP 1.811692+20−2047.4%+21.617.0%1072
84.4%
87Spartan 1.01674+25−2563.5%−103.021.2%624
67.4%
88Philemon C1667+25−2562.3%−95.422.0%626
59.4%
89VanillaChess 2.6g1662+25−2561.5%−88.820.2%624
100.0%
90PolarChess 1.31574+25−2549.3%+3.316.9%629
56.3%
91Darky 0.5d1571+24−2443.5%+56.120.8%677
98.7%
92MSCP 1.6h1529+25−2544.0%+50.815.1%628
99.8%
93Apep 1.011479+25−2541.2%+72.010.1%683
100.0%
94BACE 0.461378+23−2421.5%+257.09.8%1027
 

Results matrix

Open source 32-bit engines (best versions only), top 12
#NameElo123456789101112
1ChessBrainVB 3.72 4CPU3167            
2Stockfish 2.2.2 32-bit3049  26 − 28
+8−10=36
−38
19 − 13
+11−5=16
−13
  33 − 5
+28−0=10
+72
    2.5 − 1.5
+1−0=3
−249
3IvanHoe 9.46h 32-bit3022 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
+61
     
4Gull II b2 32-bit2981 13 − 19
+5−11=16
+13
10 − 21
+0−11=20
−54
         
5Protector 1.5.0 32-bit2947  10 − 20
+2−12=16
−22
         
6Toga II 3.0 4CPU2918      1.5 − 0.5
+1−0=1
+68
     
7Booot 5.1.02844 5 − 33
+0−28=10
−72
5.5 − 28.5
+0−23=11
−61
  0.5 − 1.5
+0−1=1
−68
 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 engines (best versions only), top 12
#NameElo123456789101112
1ChessBrainVB 3.72 4CPU3167 100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Stockfish 2.2.2 32-bit30490.0 99.8100.0100.0100.0100.0100.0100.0100.0100.0100.0
3IvanHoe 9.46h 32-bit30220.00.2 100.0100.0100.0100.0100.0100.0100.0100.0100.0
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 94.9100.0100.0100.0100.0100.0100.0
6Toga II 3.0 4CPU29180.00.00.00.05.1 100.0100.0100.0100.0100.0100.0
7Booot 5.1.028440.00.00.00.00.00.0 81.7100.0100.0100.0100.0
8MinkoChess 1.3 32-bit28290.00.00.00.00.00.018.3 100.099.9100.0100.0
9Glaurung 2.1 32-bit27650.00.00.00.00.00.00.00.0 50.987.799.2
10Texel 1.01 32-bit27640.00.00.00.00.00.00.00.149.1 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 January 24, 2021