KCEC
(Kirr's Chess Engine Comparison)
A tournament of original free chess engines
June 16, 2013
Testing summary:
Total: 135,679 games
played by 202 programs
1398 CPU days (X2 4600+)

White wins: 55,227 (40.7%)
Black wins: 47,434 (35.0%)
Draws: 33,018 (24.3%)
White score: 52.9%

Engine Details

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Show each game results
Gk 0.90 64-bit JA WB#119  (2194+16
−16
)Quote
Author: Tijs van Dam (Netherlands) Released: 2003-05-24Links: Homepage, RWBC, Jim Ablett's compiles
"JA" compile is made by Jim Ablett. Gk 0.90 64-bit JA is sometimes unable to checkmate a bare king with superior material, for example in KQBK or KQPPPK endings.
This engine is stable and runs without issues.
This is the only Gk version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Phalanx XXII Reborn JA2452+15
−15
(+258)3 − 23
(+3−23=0)
11.5%
3.0 / 26
0.0%
−144
50.6%
2310
1.28
1170
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0
–   Amateur 2.822446+15
−15
(+252)1.5 − 20.5
(+0−19=3)
6.8%
1.5 / 22
0.0%
−141
53.3%
1494
1.67
796
= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 = 0 0 = 0 0
–   Thor's Hammer 2.28 32-bit2417+15
−15
(+223)4.5 − 18.5
(+2−16=5)
19.6%
4.5 / 23
0.0%
−5
52.4%
1778
1.14
932
1 0 = 0 0 0 = 0 0 0 0 0 0 1 0 0 0 0 = = 0 0 =
–   Chezzz 1.0.32409+15
−15
(+215)3.5 − 19.5
(+1−17=5)
15.2%
3.5 / 23
0.0%
−54
52.1%
2187
0.80
1140
0 0 0 0 = 0 1 0 0 0 0 0 0 = 0 = 0 = 0 0 0 0 =
–   Resp 0.19 64-bit JA Nobook2402+16
−16
(+208)3 − 19
(+2−18=2)
13.6%
3.0 / 22
0.0%
−118
52.2%
2252
0.68
1175
0 0 1 0 0 0 1 0 0 0 0 0 0 = = 0 0 0 0 0 0 0
–   Averno 0.812396+15
−15
(+202)5 − 24
(+0−19=10)
17.2%
5.0 / 29
0.0%
−21
52.6%
1992
0.84
1048
0 0 0 0 0 = 0 = 0 0 = = 0 = 0 0 0 = = 0 = 0 0 0 = 0 0 0 =
–   Scidlet 3.61 64-bit JA2390+15
−15
(+196)4.5 − 19.5
(+2−17=5)
18.8%
4.5 / 24
0.0%
−46
55.4%
1933
0.85
1070
0 0 0 = 0 0 = 0 0 = 0 1 0 0 1 0 = 0 0 0 = 0 0 0
–   KnightX 1.922385+15
−15
(+191)2 − 18
(+2−18=0)
10.0%
2.0 / 20
0.0%
−239
53.3%
1778
0.97
947
0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0
–   Eeyore 1.482384+15
−15
(+190)8.5 − 14.5
(+6−12=5)
37.0%
8.5 / 23
0.0%
+92
56.5%
1819
0.48
1027
1 0 = 0 0 0 0 0 = 0 1 0 = 0 1 0 = 1 1 1 0 0 =
–   Ayito 0.2.9942371+16
−16
(+177)5.5 − 21.5
(+3−19=5)
20.4%
5.5 / 27
0.0%
−58
50.8%
1986
0.89
1008
0 1 0 0 0 0 = = 0 0 = 0 0 0 0 0 1 0 0 = 0 = 0 0 0 1 0
–   Matilde 2008 64-bit2368+15
−15
(+174)6 − 26
(+3−23=6)
18.8%
6.0 / 32
0.0%
−71
55.4%
2507
0.80
1389
0 0 0 1 0 = 0 1 0 0 0 0 0 0 0 0 = 0 0 = = 0 0 = 0 = 0 0 0 0 1 0
–   EXchess 5.01 beta 64-bit JA2355+14
−14
(+161)7.5 − 19.5
(+5−17=5)
27.8%
7.5 / 27
0.0%
−5
56.1%
1954
1.07
1097
0 = 0 0 0 0 0 0 0 = 0 = 0 0 1 = 0 1 1 1 0 0 0 0 = 1 0
–   Zeus 1.292346+16
−16
(+152)9.5 − 22.5
(+4−17=11)
29.7%
9.5 / 32
0.0%
+17
55.5%
1913
1.22
1061
= = 0 0 0 = = 0 0 = 0 0 1 0 0 1 0 0 = = 0 0 = 0 = = 0 1 1 0 0 =
–   Esc 1.162345+15
−15
(+151)9 − 18
(+6−15=6)
33.3%
9.0 / 27
0.0%
+28
52.4%
2261
1.03
1185
= 0 0 1 1 0 1 = 0 = 0 1 0 = 0 1 0 1 0 0 0 = = 0 0 0 0
–   ANT 2006-F2333+16
−16
(+139)11 − 16
(+8−13=6)
40.7%
11.0 / 27
0.0%
+71
48.4%
2301
0.92
1114
1 0 0 1 = 0 = 0 = = = 1 0 0 0 1 1 0 0 0 0 0 1 1 0 = 1
–   GNU Chess 5.07 64-bit JA2332+22
−22
(+138)7.5 − 19.5
(+4−16=7)
27.8%
7.5 / 27
0.0%
−21
52.0%
1330
1.20
692
1 0 = 0 = = = 0 1 0 0 0 0 0 1 0 0 = 0 0 0 0 = = 0 0 1
–   Anechka 0.082320+16
−16
(+126)9.5 − 22.5
(+8−21=3)
29.7%
9.5 / 32
0.0%
−41
54.5%
2821
0.61
1538
= 1 0 1 = 1 0 0 0 0 1 0 1 0 0 0 0 0 0 = 0 0 0 0 0 0 0 0 1 1 1 0
–   Dorky 3.482308+16
−16
(+114)9 − 17
(+7−15=4)
34.6%
9.0 / 26
0.0%
−5
54.5%
1834
1.58
999
1 0 0 0 = 0 1 0 0 1 0 0 1 0 = 0 1 1 0 0 1 0 0 = = 0
–   CyberPagno 2.1 32MB2295+16
−16
(+101)10 − 16
(+8−14=4)
38.5%
10.0 / 26
0.0%
+13
53.6%
2030
0.62
1088
0 0 1 = 0 1 0 0 0 0 = 0 = 0 0 1 0 1 1 1 1 0 1 0 0 =
–   Latista (Sinobyl) 1.52289+16
−16
(+95)7 − 22
(+4−19=6)
24.1%
7.0 / 29
0.0%
−98
51.9%
2088
0.88
1084
1 = = 0 0 1 0 0 = 0 0 0 = = 1 0 0 1 0 0 0 0 0 = 0 0 0 0 0
–   Madeleine 0.22285+15
−15
(+91)6 − 17
(+5−16=2)
26.1%
6.0 / 23
0.0%
−107
51.6%
1859
1.01
960
0 0 0 0 1 0 0 1 0 = 1 0 0 1 0 0 = 0 0 1 0 0 0
–   Chispa 4.0.32273+14
−14
(+79)13.5 − 16.5
(+7−10=13)
45.0%
13.5 / 30
0.0%
+49
50.6%
1492
1.14
755
0 = = 1 0 = 0 0 0 1 = = = 0 = 1 = 1 0 = = = = = 0 0 1 1 1 0
–   Uralochka 1.1b2272+18
−18
(+78)15 − 17
(+12−14=6)
46.9%
15.0 / 32
0.0%
+53
52.8%
2948
0.81
1558
0 = = 1 0 1 1 = 1 0 1 0 1 0 0 1 = 0 0 0 1 0 1 = 0 1 0 0 1 0 1 =
–   Atlas 2.202271+17
−17
(+77)8.5 − 17.5
(+6−15=5)
32.7%
8.5 / 26
0.0%
−52
  
0 1 = 0 0 1 = 0 0 = = 1 1 0 0 0 0 0 0 1 0 1 0 0 = 0
–   Genesis 2.02247+16
−16
(+53)11.5 − 15.5
(+7−11=9)
42.6%
11.5 / 27
0.0%
+4
58.1%
2065
0.76
1199
0 = 0 0 = 1 = = 1 = 1 0 1 0 = = = 0 0 0 = 0 1 0 1 1 0
–   Lime 662241+18
−18
(+47)16.5 − 15.5
(+14−13=5)
51.6%
16.5 / 32
0.0%
+60
49.9%
2450
0.87
1223
1 0 1 0 = 0 0 = 1 0 1 = 1 = 1 = 0 1 1 1 1 1 0 0 1 0 0 0 1 1 0 0
–   InmiChess 3.06N2241+15
−15
(+47)15.5 − 10.5
(+12−7=7)
59.6%
15.5 / 26
0.0%
+113
53.3%
1601
0.92
853
1 1 1 0 1 1 = = 0 1 = = 0 1 0 = 1 = 0 0 0 1 1 = 1 1
–   Nesik 0.7.0 alpha2237+16
−16
(+43)13 − 15
(+10−12=6)
46.4%
13.0 / 28
0.0%
+20
51.7%
1986
0.95
1026
= 0 0 1 = 0 1 0 1 0 = 1 = 0 1 0 1 0 1 1 0 0 0 = = 1 0 1
–   NagaSkaki 5.122232+18
−18
(+38)12.5 − 19.5
(+10−17=5)
39.1%
12.5 / 32
0.1%
−45
52.8%
3184
1.24
1682
0 1 0 1 0 0 0 1 0 = 1 1 0 0 0 = 1 = = 0 1 0 0 0 1 0 1 1 0 0 = 0
–   Sunsetter C10.3 64-bit JA2232+16
−16
(+38)12.5 − 13.5
(+10−11=5)
48.1%
12.5 / 26
0.0%
+25
52.9%
2061
0.62
1090
1 = 1 0 = 0 0 0 = = 0 1 1 0 0 1 1 1 1 1 0 0 0 0 1 =
–   Alarm 0.93.12226+16
−16
(+32)19 − 13
(+17−11=4)
59.4%
19.0 / 32
0.2%
+104
51.4%
2467
1.44
1268
0 1 = 1 1 0 1 1 = 1 1 1 1 0 0 0 0 1 1 0 0 0 1 = 1 1 1 1 0 1 = 0
–   Fortress 1.622216+15
−15
(+22)13 − 11
(+10−8=6)
54.2%
13.0 / 24
2.4%
+48
51.9%
1818
0.90
944
1 = 0 1 1 1 1 0 1 0 = 0 1 0 0 1 0 = 1 = = = 1 0
–   WJChess 1.642215+16
−16
(+21)7.5 − 19.5
(+5−17=5)
27.8%
7.5 / 27
2.8%
−147
57.0%
1774
1.01
1011
= 0 0 0 0 0 1 0 0 1 1 = 1 = 0 0 0 = 0 0 0 0 = 0 0 0 1
–   Alf 1.09 JA2193+17
−17
(−1)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
53.6%
−11
51.0%
2391
0.95
1220
= = 0 1 = 0 0 1 = 0 1 0 1 1 1 0 0 0 1 0 1 1 1 0 1 = = 0 1 0 0 =
–   Clarabit 1.00 64-bit2193+18
−18
(−1)15 − 17
(+9−11=12)
46.9%
15.0 / 32
54.9%
−20
49.2%
2098
0.91
1032
= 0 0 0 = = = 1 0 0 1 = = 0 1 1 = 1 = 0 0 = 1 1 = = 1 = 0 0 0 1
–   Ghost 0.142189+17
−17
(−5)19 − 13
(+15−9=8)
59.4%
19.0 / 32
69.7%
+60
48.6%
2501
1.29
1216
0 = 1 1 1 1 0 = 1 0 1 = 1 1 0 1 0 = 0 = 1 1 = 1 = 1 0 0 1 1 = 0
–   Wing 2.0a2179+16
−16
(−15)19 − 9
(+16−6=6)
67.9%
19.0 / 28
92.0%
+116
53.4%
1982
0.98
1058
= = 1 1 1 1 1 1 0 0 1 1 0 1 0 1 1 = = 1 0 = = 1 0 1 1 1
–   Uragano 3D 0.872174+16
−16
(−20)16 − 16
(+12−12=8)
50.0%
16.0 / 32
97.0%
−20
52.8%
2497
0.65
1319
0 0 1 1 0 1 = 0 1 1 0 0 0 0 = 1 = 1 = = 0 0 1 1 0 1 1 = 0 = 1 =
–   Parrot 0707222161+17
−17
(−33)26 − 6
(+23−3=6)
81.3%
26.0 / 32
99.8%
+212
48.3%
2358
1.19
1139
1 1 1 1 = 1 1 0 = 1 1 1 1 = 1 1 1 1 1 = 1 = 0 1 = 1 1 0 1 1 1 1
–   Matheus 2.32144+15
−15
(−50)10.5 − 9.5
(+9−8=3)
52.5%
10.5 / 20
100.0%
−35
55.5%
1720
0.37
955
0 = 1 1 0 0 1 0 0 1 1 = 0 1 1 1 0 = 1 0
–   Bodo 0.2b2137+15
−15
(−57)19.5 − 7.5
(+16−4=7)
72.2%
19.5 / 27
100.0%
+101
48.7%
1422
0.57
693
1 1 1 1 1 1 = 0 = 1 1 1 1 1 = = 1 0 1 0 1 0 1 = 1 = =
–   Monarch 1.72131+16
−16
(−63)17.5 − 14.5
(+14−11=7)
54.7%
17.5 / 32
100.0%
−28
55.6%
2342
1.09
1303
0 1 1 1 0 1 = 0 0 = 1 = 0 0 1 0 = 0 0 0 = 1 = 1 1 1 1 1 0 1 1 =
–   Bestia 0.902122+15
−15
(−72)14.5 − 13.5
(+10−9=9)
51.8%
14.5 / 28
100.0%
−58
54.2%
1831
0.82
993
= 0 0 0 = 0 1 0 1 1 1 = 1 0 = 0 0 1 = 1 1 = 0 = = 1 1 =
–   Ax 0.82119+15
−15
(−75)12.5 − 14.5
(+10−12=5)
46.3%
12.5 / 27
100.0%
−101
  
= 0 0 0 1 1 0 1 0 0 0 1 0 0 1 1 1 0 = 1 = = 1 = 0 0 1
–   Gerbil 02 64-bit JA2118+18
−18
(−76)20 − 12
(+18−10=4)
62.5%
20.0 / 32
100.0%
+21
57.3%
2393
0.48
1371
1 1 1 0 1 1 0 = 0 1 1 = 0 1 1 0 1 1 1 1 1 1 0 0 1 0 0 = 1 0 = 1
–   BigLion 2.23x2117+17
−17
(−77)19.5 − 12.5
(+18−11=3)
60.9%
19.5 / 32
100.0%
+11
49.0%
2928
0.68
1434
1 1 0 0 1 1 0 1 1 = 1 1 = 1 0 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 = 1
–   RDChess 3.232117+16
−16
(−77)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
100.0%
+31
51.1%
2493
1.02
1274
1 1 0 1 1 1 0 1 1 0 1 1 1 1 = 0 1 1 = 0 1 1 = 0 0 = 0 1 1 1 0 =
–   DelphiMax 2.92102+16
−16
(−92)15 − 9
(+13−7=4)
62.5%
15.0 / 24
100.0%
+2
56.3%
1745
1.00
982
0 = 1 1 = 0 0 1 1 0 1 1 = 0 1 1 1 = 0 1 1 1 1 0
–   Armageddon 2.3082098+17
−17
(−96)17 − 15
(+12−10=10)
53.1%
17.0 / 32
100.0%
−75
56.1%
2242
0.81
1257
1 = 0 0 1 = = 0 = 0 1 0 0 1 1 = 1 0 1 0 = 1 0 1 1 = = 1 = = 1 0
–   Requiem 0.532084+15
−15
(−110)23.5 − 8.5
(+19−4=9)
73.4%
23.5 / 32
100.0%
+55
54.0%
1652
0.48
892
1 0 1 1 0 1 = 1 1 1 1 1 = 0 1 1 0 1 1 = = = = 1 = 1 1 1 = = 1 1
–   Small Potato 0.6.12082+16
−16
(−112)24 − 8
(+21−5=6)
75.0%
24.0 / 32
100.0%
+80
57.5%
1975
0.57
1135
1 = 1 1 1 1 = 1 0 1 = 1 1 0 = 1 = 0 1 1 1 = 1 1 1 0 0 1 1 1 1 1
–   Elephant 1.062075+16
−16
(−119)15.5 − 8.5
(+14−7=3)
64.6%
15.5 / 24
100.0%
+1
51.2%
1771
0.73
907
1 = 1 1 1 1 1 1 0 1 0 1 1 0 0 1 = 1 1 1 0 = 0 0
–   Cilian 4.142069+16
−16
(−125)22.5 − 9.5
(+18−5=9)
70.3%
22.5 / 32
100.0%
+17
  
1 1 0 1 1 1 = 1 = 1 1 1 1 0 1 = = 1 1 = 1 = 1 0 0 1 1 = 0 = = 1
–   JanWillem 1.132062+16
−16
(−132)18.5 − 9.5
(+16−7=5)
66.1%
18.5 / 28
100.0%
−13
53.2%
1843
0.81
981
0 1 0 1 = 1 1 1 1 1 = 1 = = 0 1 0 1 1 0 = 1 0 1 0 1 1 1
–   Marvin 1.3.02054+16
−16
(−140)19.5 − 8.5
(+17−6=5)
69.6%
19.5 / 28
100.0%
+7
55.2%
2288
0.60
1262
= 0 1 = = 1 1 1 1 1 0 1 1 = 1 0 1 1 0 1 1 0 1 1 1 0 = 1
–   SSEChessII 2.05 DC2049+17
−17
(−145)25.5 − 6.5
(+22−3=7)
79.7%
25.5 / 32
100.0%
+80
48.1%
2265
0.95
1090
= 1 1 1 1 1 1 = 1 1 1 1 = 1 = 1 0 1 1 1 0 0 = 1 = 1 1 = 1 1 1 1
–   Faile 1.4.42042+15
−15
(−152)20 − 8
(+17−5=6)
71.4%
20.0 / 28
100.0%
+7
54.5%
1997
0.60
1088
1 0 0 1 1 1 = 0 1 1 1 1 1 1 1 = 1 = 1 1 0 = = 0 = 1 1 1
–   Sharper 0.172022+16
−16
(−172)23 − 7
(+22−6=2)
76.7%
23.0 / 30
100.0%
+61
49.8%
2630
0.82
1310
0 1 0 0 0 1 1 1 1 1 1 1 0 1 1 1 0 = 1 = 1 1 1 1 1 1 1 1 1 1
–   BibiChess 0.52007+16
−16
(−187)19 − 13
(+16−10=6)
59.4%
19.0 / 32
100.0%
−116
  
= = 0 1 0 1 1 1 1 1 0 1 1 0 1 0 0 = 1 0 1 = 1 1 0 1 1 = 0 1 = 0
–   Soldat 0.25b1873+17
−17
(−321)20 − 7
(+17−4=6)
74.1%
20.0 / 27
100.0%
−140
48.4%
1667
0.83
807
= 0 = = 1 1 1 1 0 0 1 1 = 1 1 1 1 1 = 1 1 1 1 0 = 1 1

Performance

This figure shows how this engine performs depending on how strong is the opponent. Regression:

Perf = C − 0.128 [±0.153] * Opp

Where 'Opp' is the opponent's rating. 95% confidence intervals are in the brackets.

Rating changes by day

Rating changes with played games


Created in 2005-2012 by Kirill Kryukov
Updated on June 16, 2013