CCRL 40/40
Downloads and Statistics
May 25, 2019
Testing summary:
Total: 1'048'225 games
played by 2'458 programs
143565 CPU days (X2 4600+)

White wins: 364'320 (34.8%)
Black wins: 271'251 (25.9%)
Draws: 412'654 (39.4%)
White score: 54.4%

Open source 32-bit single-CPU engines

Comparing 329 engines!
92 best versions of selected engines played 3484 games with each other

CCRL 40/40 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 40 minutes on Athlon 64 X2 4600+ (2.4 GHz), about 15 minutes on a modern Intel CPU.
Computed on May 25, 2019 with Bayeselo based on 1'048'225 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 3.723060+16−1651.7%−12.843.1%1270 
80.9%
2Stockfish 2.2.2 32-bit3050+14−1461.8%−76.648.3%1599
56.6%
 Sting SF 4.63047+30−3045.4%+29.347.0%334
57.2%
 ChessBrainVB 3.703044+23−2351.1%−10.248.1%551
62.5%
 Stockfish 2.3.1 32-bit3039+17−1757.2%−44.650.5%1095
61.3%
 ChessBrainVB 3.663035+23−2351.5%−9.951.2%568
66.8%
 Sting SF 4.73028+22−2244.5%+32.950.5%632
52.2%
 Stockfish 2.1.1 32-bit3027+16−1663.8%−92.043.0%1362
56.1%
 ChessBrainVB 3.683025+21−2150.1%−0.954.3%654
57.1%
3IvanHoe 9.46h 32-bit3023+14−1355.8%−37.553.6%1668
80.9%
 Stockfish 2.0.1 32-bit3013+18−1766.9%−109.646.2%1074
80.6%
 Sting SF 2 32-bit3002+17−1751.3%−9.251.2%1062
57.8%
 Stockfish 1.9.1 32-bit3000+17−1766.4%−105.946.1%1158
78.9%
 ChessBrainVB 3.612987+27−2749.3%+4.247.7%421
50.2%
 Stockfish 1.8 32-bit2987+18−1867.5%−110.247.5%1020
66.3%
4Gull II b2 32-bit2982+18−1846.8%+18.552.6%960
56.0%
 ChessBrainVB 3.502979+24−2452.4%−15.446.7%553
54.0%
 Gull II 32-bit2978+18−1846.0%+22.057.1%854
52.9%
 Stockfish 1.7.1 32-bit2977+17−1766.9%−111.445.4%1182
97.2%
5Protector 1.5.0 32-bit2947+25−2545.2%+27.751.7%470
83.1%
 Stockfish 1.6.3 32-bit2932+17−1761.1%−70.348.2%1104
85.9%
 ChessBrainVB 3.312916+26−2553.4%−20.145.5%479
98.3%
 Gull 1.0a 32-bit2885+12−1245.1%+33.744.1%2174
80.3%
 Protector 1.4.0 32-bit2878+11−1145.3%+32.040.8%2730
55.6%
 Gull 1.1 32-bit2877+17−1747.4%+15.848.9%1051
55.1%
 Gull 1.2 32-bit2875+12−1245.2%+32.542.7%2278
54.6%
 ChessBrainVB 3.202874+25−2550.3%−2.947.4%489
63.3%
 Gull 0.12a 32-bit2868+21−2149.6%+2.344.3%697
60.4%
 Stockfish 1.5.1 32-bit2864+15−1555.4%−34.543.1%1486
89.9%
6Toga II 3.02851+16−1648.1%+10.442.9%1311
60.9%
 Gull 0.11a 32-bit2847+21−2146.8%+17.646.8%722
62.4%
7Booot 5.1.02843+10−1045.4%+32.041.4%3318
90.8%
 Stockfish 1.4 32-bit2830+16−1653.8%−25.148.7%1130
51.6%
8MinkoChess 1.3 32-bit2829+31−3146.0%+25.245.5%314
49.0%
 Protector 1.3.5 32-bit2829+15−1545.2%+31.046.1%1473
58.9%
 Cyclone xTreme Fury2827+19−1948.1%+10.648.8%811
53.4%
 Grapefruit 1.0 32-bit2826+9−948.4%+10.347.7%3991
47.3%
 Toga II 1.4.1SE2826+12−1250.0%+2.343.5%2395
55.7%
 Booot 5.02825+15−1545.0%+30.143.5%1336
53.6%
 Protector 1.3.4 32-bit2824+15−1545.6%+28.446.2%1356
52.3%
 Cyclone xTreme2823+13−1344.2%+38.345.8%2009
54.8%
 ChessBrainVB 3.032822+25−2549.9%−2.340.8%512
48.6%
 Cyclone 3.42822+21−2151.5%−8.347.2%685
54.0%
 Toga II 1.4.1SE62821+23−2350.4%−0.245.1%567
50.8%
 Cyclone xTreme Rage2820+25−2548.4%+9.646.8%476
56.0%
 Toga II 3.1.2SE2818+18−1853.5%−23.543.7%1019
57.0%
 Cyclone 2.22815+28−2849.1%+5.347.4%382
69.7%
 TheMadPrune 1.1.252805+24−2451.4%−9.648.0%504
52.9%
 Toga II 1.4 beta5c2804+24−2453.3%−21.746.1%542
55.9%
 Protector 1.3.1b 32-bit2801+23−2348.8%+9.243.6%608
65.2%
 Protector 1.3.2 32-bit2795+21−2145.7%+26.050.4%659
55.3%
 Stockfish 1.3.1 32-bit2793+25−2546.1%+25.141.4%512
60.4%
 Toga II 1.3.12789+12−1250.0%−0.842.1%2565
65.0%
 Grapefruit 1.0a32783+32−3247.7%+14.342.4%309
51.3%
 MinkoChess 1.2 32-bit2782+14−1445.6%+30.540.7%1765
52.8%
 Cyclone 1.02781+32−3251.0%−7.639.3%300
52.2%
 Stockfish 1.2 Default2780+22−2245.6%+26.544.4%667
76.1%
 Toga II 1.3.42767+28−2852.9%−18.542.1%411
54.6%
9‑10Glaurung 2.1 32-bit2765+18−1845.7%+28.339.6%1044
50.7%
9‑10Texel 1.01 32-bit2765+28−2852.2%−18.935.0%432
63.5%
 Toga II 1.2.1a 32-bit2759+12−1250.5%−6.439.2%2354
63.7%
 Glaurung 2.2 32-bit2754+24−2445.6%+27.941.1%555
51.9%
 Stockfish 1.012753+32−3252.5%−19.045.4%302
58.9%
11Scorpio 2.7 32-bit2749+20−2049.0%+9.036.2%826
61.6%
 MinkoChess 1.0 32-bit2743+32−3249.4%+4.940.9%308
55.9%
 MinkoChess 1.1 32-bit2740+27−2745.7%+26.740.9%455
55.3%
 Glaurung 2.0.1 32-bit2738+16−1747.2%+16.940.6%1196
58.5%
 Toga II 1.2 32-bit2735+25−2552.4%−18.937.2%511
55.6%
12Crafty 23.4 32-bit2733+19−1950.8%−5.740.4%861
53.1%
 Toga II 1.1a 32-bit2732+16−1653.7%−25.038.7%1231
63.7%
13Bison 9.11 32-bit2728+14−1448.5%+9.637.2%1810
74.8%
 Crafty 23.3 32-bit2716+32−3250.5%−4.641.4%309
68.8%
14Critter 0.42 32-bit2706+25−2551.9%−13.141.1%494
67.1%
 Booot 4.15.12697+30−3046.1%+23.542.1%359
50.9%
 Glaurung 2 epsilon/5 32-bit2696+27−2748.1%+11.135.8%441
51.3%
 Scorpio 2.6 32-bit2696+32−3249.5%+3.643.2%301
50.3%
 Crafty 23.2 32-bit2695+32−3247.8%+16.340.0%320
51.6%
 Fruit 2.12695+25−2551.5%−14.237.2%522
54.5%
 Booot 4.15.02693+14−1445.7%+28.245.4%1619
53.2%
15Vajolet 2.482691+31−3148.9%+5.933.9%348
62.0%
 Crafty 23.1 32-bit2686+18−1845.9%+26.542.0%958
52.8%
16Bobcat 3.25 32-bit2685+31−3146.9%+22.232.2%351
68.0%
 MinkoChess 0.8 32-bit2674+33−3351.3%−13.341.5%301
59.6%
 ChessBrainVB 2.052669+23−2349.6%+1.336.1%609
52.7%
17Daydreamer 1.75 32-bit2668+17−1747.7%+14.141.2%1157
49.7%
 Glaurung 1.2.1 Avalanche 32-bit2668+32−3252.1%−16.735.4%328
49.2%
 Scorpio 1.92668+30−3050.1%−3.434.0%362
52.3%
 Scorpio 1.842667+32−3247.2%+9.129.9%354
51.5%
 Booot 4.14.02666+20−2051.4%−9.341.8%765
57.1%
 Glaurung 1.2.1 Crusader 32-bit2663+32−3251.6%−14.628.6%343
48.9%
 Scorpio 2.5 32-bit2663+32−3249.5%+4.442.3%307
57.6%
 Scorpio 1.912660+14−1445.2%+32.236.8%1863
48.6%
 Vajolet 2.032660+24−2451.2%−10.933.8%562
53.2%
 Bobcat 2.75 32-bit2659+24−2447.7%+15.136.9%558
61.5%
 Glaurung 1.2.1 32-bit2655+16−1646.4%+23.433.6%1265
49.4%
 Scorpio 2.02b2655+30−3047.3%+17.237.2%355
56.0%
 Scorpio 2.0 32-bit2652+17−1745.7%+30.533.8%1244
50.6%
 Scorpio 2.1 32-bit2652+34−3449.1%+4.838.2%280
58.2%
18Cyrano 0.6b17 32-bit2648+14−1448.5%+9.340.7%1613
57.4%
 Scorpio 1.812644+36−3648.3%+17.231.7%271
57.4%
 Scorpio 1.82641+20−2047.3%+18.035.7%861
58.4%
19RedQueen 1.0.0 32-bit2637+24−2451.6%−7.535.9%576
52.2%
20DanaSah 7.32636+15−1549.4%+5.434.6%1597
50.7%
 Scorpio 2.05b2636+32−3250.5%−1.940.8%306
53.5%
 Glaurung 1.0.2 32-bit2634+17−1747.4%+20.432.0%1209
60.3%
 Crafty 23.0 32-bit2630+29−2949.9%+1.441.3%380
53.0%
21Delfi 5.12629+25−2646.3%+23.233.9%522
51.4%
22Cheng3 1.07 32-bit2628+26−2646.3%+24.332.1%505
54.4%
 Glaurung 1.1 32-bit2625+33−3348.8%+11.132.1%324
55.1%
23Arasan 13.4 32-bit2623+30−3049.7%+1.134.8%374
57.0%
 Bison 9.62619+23−2351.3%−13.533.9%635
52.4%
24Phalanx XXV2618+15−1549.7%+1.732.6%1457
54.5%
 DanaSah 7.02617+26−2651.3%−10.337.8%479
50.3%
 Arasan 14.1 32-bit2616+33−3349.0%+5.033.3%309
51.6%
25K2 0.912616+16−1650.3%−2.532.9%1390
54.1%
 Bison 9.8 32-bit2614+33−3349.7%+0.132.9%301
54.6%
26Caligula 0.9g2611+27−2657.7%−54.027.0%496
56.4%
 Arasan 13.2 32-bit2608+32−3251.0%−6.038.5%312
56.1%
 DanaSah 6.502605+22−2249.7%+0.636.0%691
52.1%
 Scorpio 1.72604+32−3249.7%−0.338.1%310
53.2%
 DanaSah 6.802602+27−2850.5%−2.540.3%412
56.7%
 Delfi 5.02599+20−2047.5%+15.337.1%805
49.8%
27‑28Nawito 18122599+24−2350.3%−1.833.6%608
50.7%
27‑28Sloppy 0.2.2 32-bit2599+14−1448.1%+12.037.8%1775
62.5%
 Crafty 22.8 32-bit2593+33−3347.9%+12.636.1%305
54.8%
29CuckooChess 1.12 32-bit2591+26−2648.5%+10.530.2%503
57.0%
 Booot 4.13.12587+28−2849.4%+1.639.9%404
52.8%
 RedQueen 1.1.1 32-bit2585+33−3350.6%+0.235.7%308
53.5%
 Nawito 1.1d2584+28−2850.2%−3.036.7%401
51.7%
 K2 0.872583+18−1749.0%+5.834.7%1102
54.7%
 Arasan 13.1 32-bit2581+32−3347.8%+13.936.8%302
49.8%
 Crafty 22.4 32-bit2581+32−3248.2%+10.737.3%308
53.3%
 Cheng3 1.04 32-bit2579+33−3351.0%−7.934.4%302
53.9%
 RedQueen 0.9.8 32-bit2577+22−2249.6%+4.827.7%730
64.6%
 Bobcat 20110414 32-bit2570+32−3249.7%−0.141.5%301
51.1%
 DanaSah 5.072569+17−1749.9%−0.837.2%1191
51.2%
 Scorpio 2.2 32-bit2569+29−2946.4%+24.735.4%407
54.3%
30Brutus 8.05 32-bit2567+17−1749.1%+3.636.8%1142
53.8%
 Arasan 12.3 32-bit2565+24−2446.8%+23.730.0%587
50.1%
 CuckooChess 1.11 32-bit2565+29−2950.4%−2.634.1%384
51.1%
 Cyrano 0.52565+33−3350.7%−4.537.1%302
55.9%
 Bobcat 20110220 32-bit2561+33−3348.3%+10.134.9%301
51.6%
 Cheng3 1.06 32-bit2560+30−3146.7%+20.036.3%347
52.0%
 Cheng3 1.05 32-bit2559+32−3248.0%+14.633.6%324
51.6%
 Arasan 11.7 32-bit2558+32−3249.2%+6.136.0%308
55.5%
 DanaSah 4.882555+22−2250.5%−3.233.9%676
58.6%
 DanaSah 5.002551+29−2948.5%+9.332.2%395
54.1%
 Crafty 21.6 32-bit2549+34−3447.8%+13.030.1%302
61.2%
31Betsabe II 1.842543+15−1548.3%+13.925.7%1721
52.6%
 Crafty 21.5 32-bit2542+32−3248.3%+13.728.5%344
51.8%
 DanaSah 4.662541+26−2648.1%+11.835.2%475
52.2%
 DanaSah 4.602540+25−2548.5%+10.835.1%513
50.5%
32Tucano 1.042540+30−3047.2%+17.436.5%359
54.4%
 Crafty 22.0 32-bit2537+33−3348.5%+10.531.9%304
51.6%
 Phalanx XXIV2537+20−2048.7%+7.327.3%887
52.3%
33Rodent 0.102536+33−3351.0%−9.531.4%303
53.3%
 Caligula 0.82534+20−2049.1%+6.726.3%938
52.6%
 K2 0.832533+27−2751.7%−12.433.3%474
51.1%
 Arasan 11.6 32-bit2532+33−3351.8%−12.332.6%304
52.7%
 Arasan 12.1 32-bit2531+32−3351.4%−12.327.3%326
50.2%
 CuckooChess 1.102531+31−3151.5%−12.134.5%330
57.9%
 DanaSah 4.242527+17−1751.5%−10.836.9%1128
63.0%
 Arasan 10.0 32-bit2520+34−3451.4%−11.130.1%289
53.8%
34EXchess 6.10b 32-bit2518+33−3249.4%+3.632.5%314
52.9%
 Crafty 20.14 32-bit2516+27−2747.4%+20.233.4%482
51.3%
 DanaSah 5.062516+33−3349.7%+0.134.6%309
52.4%
 Brutus 7.02b2515+18−1852.0%−16.335.4%994
53.8%
 DanaSah 4.452513+29−2949.9%+1.638.4%378
60.6%
 Betsabe II 1.752508+22−2251.8%−14.623.3%730
49.4%
 CuckooChess 1.092508+33−3351.6%−12.626.8%317
51.5%
 Crafty 20.13 32-bit2507+33−3347.8%+16.634.1%302
59.3%
 DanaSah 4.372502+33−3349.0%+6.438.2%301
50.0%
35Pawny 0.3.1 32-bit2502+33−3348.9%+7.628.7%310
52.5%
 Arasan 11.3 32-bit2500+33−3448.7%+8.130.9%301
50.2%
 Crafty 20.11 32-bit2500+34−3449.8%+3.130.6%301
53.7%
 Arasan 10.32498+24−2445.5%+32.831.0%616
59.2%
 Cheng3 1.03 32-bit2493+33−3350.0%−0.831.2%308
53.9%
 K2 0.752491+23−2352.4%−18.432.8%634
52.7%
36GreKo 9.2 32-bit2490+33−3349.5%+2.333.2%298
54.1%
 Arasan 11.4 32-bit2487+34−3449.0%+8.228.5%305
50.7%
 GreKo 8.2 32-bit2487+26−2649.1%+5.433.8%506
52.5%
37DoubleCheck 3.1 32-bit2485+34−3451.2%−9.025.0%300
57.0%
 Arasan 10.2 32-bit2482+25−2545.2%+36.327.5%582
50.7%
38Pepito 1.59 32-bit2481+24−2449.6%+1.434.0%583
60.4%
39BBChess 1.3b2477+25−2450.4%−2.338.2%537
59.9%
 BBChess 1.3a2472+25−2551.6%−12.330.5%528
53.7%
 Arasan 10.42471+20−2145.5%+32.230.0%850
71.0%
 Betsabe II 1.662462+22−2246.7%+24.528.4%718
51.3%
40Carballo 1.32462+25−2547.4%+17.431.0%561
52.7%
41Nemeton 1.82461+18−1852.4%−19.427.1%1182
49.8%
 Pawny 0.3 32-bit2461+33−3349.2%+3.334.3%303
57.9%
 Carballo 1.22457+24−2453.8%−25.529.6%602
60.1%
 Nemeton 1.512452+22−2249.8%−0.228.8%732
53.2%
 Arasan 9.52451+36−3647.5%+14.323.8%281
50.5%
 Cyrano 0.32450+34−3449.2%+4.823.8%311
51.9%
 GreKo 8.0 32-bit2449+29−2950.6%−3.529.7%411
60.0%
 Cheng3 1.02b2443+34−3450.5%−5.930.6%304
51.7%
 Betsabe II 1.472442+20−2049.9%+2.625.3%902
55.6%
 K2 0.792440+29−2947.6%+17.231.1%396
49.6%
42Typhoon 1.00-3482440+33−3348.6%+10.929.0%317
51.8%
 Arasan 10.12439+28−2845.5%+37.928.5%480
52.5%
 Nemeton 1.62438+24−2446.1%+26.832.3%594
57.9%
 Critter 0.382434+32−3251.1%−9.133.4%320
49.2%
 Typhoon 1.00-3582434+17−1748.2%+12.131.1%1220
54.1%
43Murka 2 32-bit2432+30−3047.4%+19.026.3%400
58.8%
 DanaSah 3.632428+27−2748.4%+10.232.3%477
49.1%
 GreKo 7.2 32-bit2428+33−3348.4%+10.235.5%304
54.6%
 Arasan 9.22426+34−3446.1%+27.430.9%304
52.4%
 Nemeton 1.612424+28−2847.3%+18.032.3%421
56.6%
 DanaSah 2.852420+33−3349.0%+9.033.8%305
53.9%
44Kiwi 0.6d 32-bit2419+19−1948.3%+9.627.0%975
50.2%
 Nemeton 1.72418+18−1849.6%+1.225.2%1141
52.7%
 K2 0.712417+28−2851.4%−9.127.6%439
58.7%
 Pawny 0.2.2 32-bit2412+34−3448.8%+9.328.6%301
54.6%
45Diablo 0.5.12410+18−1848.7%+8.732.3%1072
49.4%
 Typhoon 1.00-3142410+34−3450.2%+0.223.0%305
57.0%
46RomiChess P3k 32-bit2407+19−1949.2%+5.233.0%906
61.8%
47Amy 0.87b2402+24−2449.4%+7.025.7%610
50.6%
 Cyrano 0.2f2402+32−3248.4%+13.732.9%316
49.1%
 Pawny 0.2.1 32-bit2402+31−3147.1%+20.325.5%373
54.2%
 Pawny 0.2 32-bit2400+29−2949.2%+5.530.8%396
55.6%
48Simplex 0.9.8 32-bit2397+30−3049.0%+5.331.2%359
57.0%
 Phalanx XXII2393+25−2450.1%−0.623.5%595
70.4%
49Thor's Hammer 2.28 32-bit2384+23−2349.0%+8.430.0%624
53.2%
 DoubleCheck 2.5.4 32-bit2383+33−3350.5%−3.828.6%318
52.1%
 RomiChess P3L 32-bit2382+33−3346.3%+28.233.4%314
55.3%
 GreKo 6.302378+33−3348.0%+14.131.6%307
57.4%
 Carballo 1.1.12374+32−3247.5%+19.127.4%340
49.3%
50Ifrit m1.5 32-bit2374+28−2846.6%+24.429.0%445
57.1%
 GreKo 7.02371+28−2846.3%+28.527.8%454
48.9%
 Typhoon 1.00-2852371+35−3549.5%+3.219.4%304
56.0%
 GreKo 6.252368+33−3348.0%+13.031.8%302
57.4%
 GreKo 6.52364+26−2648.9%+6.931.5%495
49.6%
 Phalanx XXIII2364+32−3246.3%+23.824.8%351
66.5%
 Nemeton 1.412355+25−2547.6%+18.433.7%514
51.5%
 K2 0.672354+23−2353.0%−19.629.8%657
50.5%
 Nemeton 1.32354+31−3152.1%−17.433.5%340
59.9%
 GreKo 5.92349+24−2446.2%+29.329.4%613
58.3%
 Ifrit m1.6 32-bit2345+33−3347.1%+16.935.1%308
56.0%
51Xpdnt 0907042341+33−3351.8%−13.629.0%314
62.2%
 Daydreamer 1.52335+22−2252.1%−18.934.3%722
59.9%
 Nemeton 1.12330+29−2947.5%+16.831.3%393
55.3%
52Amundsen 0.802328+17−1749.1%+6.729.2%1269
60.0%
 Simplex 0.9.7 32-bit2323+31−3148.6%+9.825.4%370
70.2%
 GreKo 5.52311+33−3350.7%−5.633.1%305
49.7%
 Nemeton 1.22311+26−2646.5%+22.428.3%508
70.1%
53Natwarlal 0.142302+19−1949.3%+5.525.3%1021
55.5%
 Xpdnt 0809272300+29−2951.2%−8.624.8%428
53.7%
 Brutus 6.12298+34−3447.5%+14.225.2%306
59.1%
 Nemeton 1.02293+30−3052.6%−18.627.4%383
50.8%
 Natwarlal 0.122292+34−3449.4%+7.426.6%308
49.5%
 Pawny 0.1.62292+33−3352.1%−15.124.4%328
70.7%
 Brutus 5.42279+34−3450.7%−4.229.1%302
54.1%
 GreKo 5.2.52277+35−3550.9%−9.027.0%289
79.3%
54Sungorus 1.4 32-bit2260+21−2148.2%+11.926.5%820
60.1%
 Sungorus 1.3 32-bit2254+34−3452.7%−16.024.3%301
55.3%
55RattateChess 1.0 Nosferatu2252+19−1949.9%+0.628.0%1008
51.8%
 Brutus 6.02251+35−3548.8%+5.422.6%301
51.6%
 EXchess 5.01b 32-bit2250+29−2946.5%+21.231.2%401
74.3%
56Feuerstein 0.4.6.12238+19−1949.1%+6.128.5%944
53.3%
 Betsabe II 1.08c2237+35−3549.2%+7.621.0%300
71.8%
 Vajolet 1.62.12222+34−3447.7%+12.428.4%310
55.8%
57Bagatur 1.2d 32-bit2219+34−3446.8%+19.527.2%298
51.6%
58Beowulf 2.4a 32-bit2218+20−2053.8%−29.425.4%952
67.1%
59ZCT 0.3.24512210+27−2749.4%+4.125.5%478
52.1%
 Betsabe II 1.09c2209+34−3548.2%+11.919.8%308
57.3%
60Jazz 501 32-bit2205+29−2952.5%−18.228.5%418
57.6%
 RattateChess Bologna 20072201+25−2551.3%−9.725.0%588
62.5%
 Carballo 0.82195+22−2247.2%+19.730.6%706
51.1%
 Jazz 444 32-bit2195+32−3250.3%−3.225.2%353
61.8%
 Amundsen 0.65.12188+34−3448.7%+7.523.9%305
50.9%
 Feuerstein 0.4.5.22187+37−3749.2%+9.024.7%255
54.5%
 K2 0.572184+34−3446.2%+27.925.5%302
61.5%
 RedQueen 0.62177+30−3045.8%+29.819.7%406
54.6%
 Feuerstein 0.4.62174+38−3850.6%−1.518.5%259
52.8%
 Sungorus 1.22173+26−2652.4%−17.928.7%499
55.7%
 Pawny 0.132170+32−3252.2%−17.820.1%363
53.4%
 Simplex 0.9.3 32-bit2168+34−3449.5%+3.625.7%303
63.5%
 Betsabe II 1.052159+34−3445.2%+33.524.2%314
54.1%
61OliThink 5.1.92157+30−3046.6%+27.421.3%417
51.1%
 Bagatur 1.2b 32-bit2156+33−3446.2%+28.629.1%306
50.3%
62Chesley r323 32-bit2156+24−2549.0%+8.021.0%625
65.1%
 Ifrit j4.32149+28−2845.6%+30.429.4%428
66.8%
 K2 0.43f2139+33−3348.2%+11.821.3%338
53.6%
63Prophet 2.0 32-bit2137+19−1949.3%+5.024.0%1025
55.2%
64Parrot 07.07.222136+19−1947.3%+19.523.0%1047
51.1%
 Parrot 07.01.162135+31−3146.6%+26.021.1%394
69.7%
 Ifrit j4.22123+34−3445.5%+31.326.4%303
67.4%
65ChessKISS 1.3a 32-bit2112+32−3347.0%+18.830.3%320
54.1%
 DoubleCheck 2.1 32-bit2110+33−3348.1%+12.121.9%342
74.0%
 Carballo 0.52096+23−2347.1%+20.721.9%694
83.0%
66AdroitChess 0.42080+24−2458.7%−77.714.5%752
49.3%
 Ifrit j2.92080+34−3448.2%+12.321.3%314
51.6%
 Feuerstein 0.4.5.12079+38−3848.0%+13.125.8%248
88.4%
 ZCT 0.3.25002049+32−3246.2%+29.716.8%381
53.8%
67PLP 16615712047+22−2246.1%+27.924.3%760
57.5%
68Jabba 1.0 32-bit2044+21−2144.8%+38.625.0%839
86.0%
69Faile 1.4.42027+23−2355.2%−28.322.1%774
53.3%
70Slibo 0.5.12025+26−2645.5%+33.819.4%573
91.3%
71BibiChess 0.52000+24−2445.7%+32.226.5%607
60.9%
72Cupcake 1.01995+31−3145.5%+31.422.7%401
54.9%
73Schola 1.1.0 32-bit1992+26−2645.6%+32.825.1%514
68.1%
 AdroitChess 0.31984+25−2544.2%+46.018.5%626
85.1%
74Dabbaba 5.671965+25−2545.5%+33.526.4%557
65.8%
75Sissa 2.01958+23−2353.1%−22.930.1%678
55.4%
76Monik 2.2.3 32-bit1955+30−3044.4%+39.427.1%395
51.6%
 Feuerstein 0.4.4.21954+28−2941.2%+92.218.7%518
52.3%
77Wowl 1.3.81953+26−2745.4%+35.413.3%573
54.7%
78Smash 1.0.31951+26−2640.8%+74.017.8%574
68.9%
79Micro-Max 4.8 (DM-PII)1943+20−2048.3%+12.126.1%865
57.5%
 Dabbaba 6.521940+22−2248.6%+10.920.3%777
64.0%
80Eia 0.31934+20−2047.1%+22.724.4%914
71.3%
 Wowl 1.3.71925+25−2546.8%+24.711.7%630
76.6%
 Carballo 0.41909+32−3335.8%+104.134.8%342
54.4%
 Dabbaba 7.491907+12−1247.8%+17.719.9%3152
52.9%
 Jabba 130320121906+31−3139.1%+97.816.7%442
59.1%
81ChessterfieldCL i5a1901+24−2440.6%+74.620.4%658
68.8%
 Micro-Max 4.81892+28−2836.7%+102.924.7%493
77.3%
82CDrill 1800 build 41878+23−2441.4%+72.915.5%741
100.0%
83RataAeroespacial 0.2.11815+13−1342.5%+64.812.9%2478
100.0%
84TSCP 1.811693+20−2047.4%+21.217.0%1072
83.7%
85Spartan 1.01675+25−2563.5%−103.021.2%624
67.4%
86Philemon C1668+25−2562.3%−95.422.0%626
59.4%
87VanillaChess 2.6g1663+25−2561.5%−88.820.2%624
100.0%
88PolarChess 1.31575+25−2549.3%+3.316.9%629
56.0%
89Darky 0.5d1572+24−2443.6%+55.120.9%675
98.7%
90MSCP 1.6h1530+25−2544.0%+50.815.1%628
99.8%
91Apep 1.011480+25−2541.2%+72.010.1%683
100.0%
92BACE 0.461379+23−2421.5%+256.89.8%1027
 

Results matrix

Open source 32-bit single-CPU engines (best versions only), top 12
#NameElo123456789101112
1ChessBrainVB 3.723060  7.5 − 8.5
+4−5=7
−54
         
2Stockfish 2.2.2 32-bit3050  26 − 28
+8−10=36
−38
19 − 13
+11−5=16
−13
  33 − 5
+28−0=10
+70
    2.5 − 1.5
+1−0=3
−249
3IvanHoe 9.46h 32-bit30238.5 − 7.5
+5−4=7
+54
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
     
4Gull II b2 32-bit2982 13 − 19
+5−11=16
+13
10 − 21
+0−11=20
−54
         
5Protector 1.5.0 32-bit2947  10 − 20
+2−12=16
−21
         
6Toga II 3.02851      2 − 0
+2−0=0
+INF
     
7Booot 5.1.02843 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
7 − 3
+5−1=4
+17
8MinkoChess 1.3 32-bit2829      6.5 − 3.5
+4−1=5
+101
  7.5 − 2.5
+6−1=3
+106
  
9Glaurung 2.1 32-bit2765            
10Texel 1.01 32-bit2765      0 − 6
+0−6=0
−INF
2.5 − 7.5
+1−6=3
−106
    
11Scorpio 2.7 32-bit2749      9.5 − 13.5
+5−9=9
+44
    29.5 − 22.5
+20−13=19
+29
12Crafty 23.4 32-bit2733 1.5 − 2.5
+0−1=3
+249
    3 − 7
+1−5=4
−17
   22.5 − 29.5
+13−20=19
−29
 
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 3.723060 80.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
2Stockfish 2.2.2 32-bit305019.1 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-bit29820.00.00.0 98.7100.0100.0100.0100.0100.0100.0100.0
5Protector 1.5.0 32-bit29470.00.00.01.3 100.0100.0100.0100.0100.0100.0100.0
6Toga II 3.028510.00.00.00.00.0 78.388.6100.0100.0100.0100.0
7Booot 5.1.028430.00.00.00.00.021.7 80.1100.0100.0100.0100.0
8MinkoChess 1.3 32-bit28290.00.00.00.00.011.419.9 100.099.9100.0100.0
9Glaurung 2.1 32-bit27650.00.00.00.00.00.00.00.0 50.787.499.2
10Texel 1.01 32-bit27650.00.00.00.00.00.00.00.149.3 81.196.8
11Scorpio 2.7 32-bit27490.00.00.00.00.00.00.00.012.618.9 88.7
12Crafty 23.4 32-bit27330.00.00.00.00.00.00.00.00.83.211.3 
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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Created in 2005-2013 by CCRL team
Last games added on May 25, 2019