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
WJChess 1.64 UCI#118  (2215+16
−16
)Quote
Author: Jean-Francois Gazet (France) Released: 2004-09-15Link: Homepage
This engine is stable and runs without issues.
This is the only WJChess version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Phalanx XXII Reborn JA2452+15
−15
(+237)4.5 − 20.5
(+2−18=5)
18.0%
4.5 / 25
0.0%
−12
54.6%
1724
0.63
942
0 = = 0 = = 1 0 0 0 0 0 0 0 0 = 0 0 0 0 0 0 0 0 1
–   Amateur 2.822446+15
−15
(+231)2.5 − 18.5
(+1−17=3)
11.9%
2.5 / 21
0.0%
−99
59.3%
1088
1.09
645
0 0 0 0 0 = 0 = 0 0 0 0 0 = 1 0 0 0 0 0 0
–   Thor's Hammer 2.28 32-bit2417+15
−15
(+202)4.5 − 19.5
(+2−17=5)
18.8%
4.5 / 24
0.0%
−39
52.8%
1547
1.07
817
= = 0 1 0 0 = = 0 = 0 0 0 0 0 0 0 1 0 0 0 0 0 0
–   Chezzz 1.0.32409+15
−15
(+194)4.5 − 17.5
(+2−15=5)
20.5%
4.5 / 22
0.0%
−24
57.2%
1704
0.73
975
= 0 = 0 = 1 0 = 0 1 0 0 0 0 0 0 0 0 = 0 0 0
–   Resp 0.19 64-bit JA Nobook2402+16
−16
(+187)4 − 13
(+3−12=2)
23.5%
4.0 / 17
0.0%
−24
55.6%
1662
0.56
924
0 0 1 0 1 = 0 1 0 0 0 0 0 0 = 0 0
–   Averno 0.812396+15
−15
(+181)7 − 21
(+4−18=6)
25.0%
7.0 / 28
0.0%
−6
57.5%
1689
0.61
971
0 = = = 0 0 0 0 0 = 1 0 0 0 0 1 1 = = 0 0 0 0 0 1 0 0 0
–   Scidlet 3.61 64-bit JA2390+15
−15
(+175)6 − 21
(+4−19=4)
22.2%
6.0 / 27
0.0%
−46
62.9%
1916
0.81
1205
= 0 0 0 0 0 0 0 0 0 0 0 0 = = = 0 0 1 0 0 0 0 0 1 1 1
–   KnightX 1.922385+15
−15
(+170)6.5 − 21.5
(+4−19=5)
23.2%
6.5 / 28
0.0%
−38
54.9%
1734
0.79
952
0 0 = = = 0 0 0 0 0 0 0 = 1 0 0 0 1 0 0 0 0 1 0 = 0 1 0
–   Eeyore 1.482384+15
−15
(+169)3.5 − 21.5
(+2−20=3)
14.0%
3.5 / 25
0.0%
−145
61.1%
1944
0.70
1188
0 = 0 0 = 0 0 1 0 0 0 0 0 0 0 0 = 0 0 0 1 0 0 0 0
–   Ayito 0.2.9942371+16
−16
(+156)8 − 15
(+7−14=2)
34.8%
8.0 / 23
0.0%
+28
52.8%
2134
1.10
1126
0 1 = 0 0 0 1 0 = 0 0 0 1 1 1 0 0 1 0 1 0 0 0
–   Matilde 2008 64-bit2368+15
−15
(+153)4 − 28
(+1−25=6)
12.5%
4.0 / 32
0.0%
−151
54.9%
2488
0.86
1365
= 0 0 0 0 = 0 = 0 0 0 0 0 0 0 0 0 0 = 0 0 1 0 0 0 0 0 = 0 0 = 0
–   Natwarlal 0.142359+17
−17
(+144)12 − 20
(+9−17=6)
37.5%
12.0 / 32
0.0%
+50
58.0%
2334
0.84
1354
0 0 0 0 0 0 1 1 0 0 0 0 1 = 0 1 = 0 1 0 = 1 1 0 0 = 1 = 0 1 = 0
–   EXchess 5.01 beta 64-bit JA2355+14
−14
(+140)6 − 20
(+3−17=6)
23.1%
6.0 / 26
0.0%
−59
59.2%
1631
0.66
966
0 = 1 0 0 = 0 = = = 0 0 0 1 0 0 0 0 1 0 0 0 0 = 0 0
–   Zeus 1.292346+16
−16
(+131)10.5 − 21.5
(+8−19=5)
32.8%
10.5 / 32
0.0%
−2
54.8%
2186
0.65
1197
1 1 0 0 1 0 0 = = 0 = 0 1 1 1 = 0 0 = 1 0 0 0 1 0 0 0 0 0 0 0 0
–   Esc 1.162345+15
−15
(+130)6.5 − 19.5
(+4−17=5)
25.0%
6.5 / 26
0.0%
−61
58.3%
2175
0.74
1268
0 1 = 0 0 0 0 1 0 0 0 0 1 = 0 0 0 0 = 0 0 0 1 = 0 =
–   Popochin 3.22341+19
−19
(+126)12.5 − 19.5
(+6−13=13)
39.1%
12.5 / 32
0.0%
+55
60.9%
2113
0.70
1287
0 = = = 1 0 = 1 0 0 0 = 0 0 0 = 0 = 1 1 = 1 0 = 0 0 = = 1 = 0 =
–   ANT 2006-F2333+16
−16
(+118)12.5 − 18.5
(+9−15=7)
40.3%
12.5 / 31
0.0%
+45
52.4%
2367
0.74
1241
0 1 = = = 1 = 0 1 = 1 0 1 = 1 0 0 0 0 = 1 0 0 0 1 0 0 0 1 0 0
–   GNU Chess 5.07 64-bit JA2332+22
−22
(+117)8.5 − 20.5
(+7−19=3)
29.3%
8.5 / 29
0.0%
−52
53.0%
1882
0.85
997
0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 = 0 1 = = 0 0 1 1 0 0 0 1
–   Anechka 0.082320+16
−16
(+105)11 − 21
(+9−19=4)
34.4%
11.0 / 32
0.0%
−19
59.0%
2614
0.70
1541
0 0 0 0 0 = 0 1 0 0 1 0 0 0 0 0 1 1 0 1 0 1 0 = 1 1 = 1 0 0 0 =
–   Dorky 3.482308+16
−16
(+93)11.5 − 16.5
(+8−13=7)
41.1%
11.5 / 28
0.0%
+26
57.4%
1857
0.99
1065
0 0 1 0 1 0 = = 1 = 1 0 0 = = 0 = 0 1 0 1 0 1 1 = 0 0 0
–   CyberPagno 2.1 32MB2295+16
−16
(+80)7.5 − 14.5
(+5−12=5)
34.1%
7.5 / 22
0.0%
−39
52.9%
2026
0.77
1072
1 0 1 0 = 0 0 0 0 = 0 0 = 0 0 1 0 = = 0 1 1
–   Latista (Sinobyl) 1.52289+16
−16
(+74)8.5 − 19.5
(+4−15=9)
30.4%
8.5 / 28
0.0%
−60
53.0%
1366
0.67
724
0 0 0 0 = 0 = = 0 0 1 0 0 = = = 0 0 0 1 = 0 1 = = 0 1 0
–   Madeleine 0.22285+15
−15
(+70)9 − 17
(+5−13=8)
34.6%
9.0 / 26
0.0%
−35
53.6%
1168
1.03
626
0 1 = 0 = 0 1 = = = 1 0 0 0 0 1 0 0 = = 1 0 0 = 0 0
–   Chispa 4.0.32273+14
−14
(+58)12 − 14
(+6−8=12)
46.2%
12.0 / 26
0.0%
+33
52.5%
1276
1.07
670
= 1 = = 0 = 0 0 = 1 1 = 0 0 0 = 1 = 1 1 = = 0 = 0 =
–   Uralochka 1.1b2272+18
−18
(+57)11 − 21
(+9−19=4)
34.4%
11.0 / 32
0.0%
−67
54.1%
2428
0.84
1314
1 0 1 1 0 = 0 0 0 1 = 0 0 0 0 0 0 0 0 1 1 0 0 = 0 0 0 1 1 0 = 1
–   Atlas 2.202271+17
−17
(+56)9 − 15
(+6−12=6)
37.5%
9.0 / 24
0.0%
−32
  
0 1 1 0 0 0 0 = 0 0 0 0 1 1 0 = 1 0 1 0 = = = =
–   Genesis 2.02247+16
−16
(+32)11 − 17
(+8−14=6)
39.3%
11.0 / 28
0.2%
−43
56.2%
2194
0.75
1234
1 0 = = 1 1 0 0 1 = = 1 0 0 0 0 0 0 = 0 1 0 0 = 1 0 0 1
–   Lime 662241+18
−18
(+26)16 − 16
(+13−13=6)
50.0%
16.0 / 32
1.1%
+24
55.0%
2379
0.75
1309
1 0 0 1 1 1 1 1 1 0 1 0 1 0 = 0 0 0 1 1 = = 0 0 = 1 0 0 = = 1 0
–   InmiChess 3.06N2241+15
−15
(+26)15.5 − 9.5
(+12−6=7)
62.0%
15.5 / 25
0.6%
+106
53.6%
1747
0.93
937
= 1 0 1 1 1 1 = = 1 1 0 0 = 0 1 0 = = 1 0 1 1 = 1
–   Nesik 0.7.0 alpha2237+16
−16
(+22)9.5 − 13.5
(+5−9=9)
41.3%
9.5 / 23
2.0%
−34
58.8%
1281
0.63
753
0 1 0 = 1 = 0 1 0 0 = = = 0 = 0 = 0 0 1 = 1 =
–   NagaSkaki 5.122232+18
−18
(+17)14 − 18
(+8−12=12)
43.8%
14.0 / 32
6.7%
−23
58.7%
1767
0.83
1037
0 = 1 1 0 0 0 0 0 0 1 1 0 = = = = 1 = 1 = 0 = = 1 1 0 = 0 = 0 =
–   Sunsetter C10.3 64-bit JA2232+16
−16
(+17)18 − 10
(+16−8=4)
64.3%
18.0 / 28
5.7%
+127
54.8%
2169
0.88
1188
= 0 1 1 0 1 = 0 1 1 0 1 1 1 = 0 1 = 1 0 0 1 1 1 1 0 1 1
–   Alarm 0.93.12226+16
−16
(+11)17 − 15
(+12−10=10)
53.1%
17.0 / 32
15.3%
+34
56.9%
2064
1.06
1174
0 0 0 = = 0 0 0 0 = 1 = 1 1 = = 1 1 1 0 1 0 1 1 0 = 1 = 1 = 1 =
–   Fortress 1.622216+15
−15
(+1)20.5 − 7.5
(+18−5=5)
73.2%
20.5 / 28
47.5%
+180
55.6%
2390
1.15
1328
= 1 1 1 0 = 0 1 1 1 1 1 = 1 1 0 1 1 1 1 1 = 1 0 1 1 = 0
–   Gk 0.90 64-bit JA2194+16
−16
(−21)19.5 − 7.5
(+17−5=5)
72.2%
19.5 / 27
97.2%
+147
57.0%
1774
1.01
1011
= 1 1 1 1 1 0 1 1 0 0 = 0 = 1 1 1 = 1 1 1 1 = 1 1 1 0
–   Alf 1.09 JA2193+17
−17
(−22)14 − 18
(+10−14=8)
43.8%
14.0 / 32
97.4%
−65
55.0%
2096
0.90
1152
1 1 = 1 0 = 0 1 0 1 0 1 1 = 0 0 0 = 0 0 = 1 1 = = 0 0 1 = 0 0 0
–   Clarabit 1.00 64-bit2193+18
−18
(−22)15 − 17
(+10−12=10)
46.9%
15.0 / 32
97.2%
−41
55.6%
2204
0.87
1226
0 0 1 0 1 1 = 1 = 0 0 1 0 = 0 = = = 0 = 0 0 = 1 = 1 1 0 1 0 = 1
–   Ghost 0.142189+17
−17
(−26)17.5 − 14.5
(+15−12=5)
54.7%
17.5 / 32
99.1%
+11
55.7%
2322
1.15
1294
1 1 0 1 = 0 0 1 0 0 1 1 0 1 1 1 0 1 = 0 0 1 1 1 0 0 0 1 = 1 = =
–   Wing 2.0a2179+16
−16
(−36)15.5 − 13.5
(+13−11=5)
53.4%
15.5 / 29
100.0%
−7
55.2%
2086
0.69
1151
0 = 0 0 1 0 = 1 0 0 0 1 1 1 0 = 1 0 = 1 1 1 0 0 1 1 = 1 1
–   Uragano 3D 0.872174+16
−16
(−41)20 − 12
(+17−9=6)
62.5%
20.0 / 32
100.0%
+50
53.4%
2555
0.90
1365
1 1 0 = 0 1 0 1 = 0 0 0 = 1 1 1 1 0 1 1 1 = 1 1 0 1 1 = 0 1 = 1
–   Parrot 0707222161+17
−17
(−54)15.5 − 16.5
(+13−14=5)
48.4%
15.5 / 32
100.0%
−67
48.7%
2519
1.39
1226
1 1 1 1 0 = 0 0 0 1 0 1 0 = = 1 0 0 0 1 1 0 0 1 0 0 = 1 1 0 1 =
–   Matheus 2.32144+15
−15
(−71)17.5 − 10.5
(+13−6=9)
62.5%
17.5 / 28
100.0%
+15
54.6%
2249
1.14
1227
1 1 0 0 1 = = = = 0 1 1 1 1 1 1 0 0 = 1 1 0 = = 1 = 1 =
–   Bodo 0.2b2137+15
−15
(−78)14 − 7
(+12−5=4)
66.7%
14.0 / 21
100.0%
+49
50.6%
1239
0.83
627
1 = 1 1 1 = 0 0 = = 0 1 1 1 1 1 1 1 1 0 0
–   Monarch 1.72131+16
−16
(−84)19 − 13
(+16−10=6)
59.4%
19.0 / 32
100.0%
−14
47.5%
2849
1.66
1353
1 1 1 0 0 1 1 = 0 = 1 0 1 1 = = = 0 1 = 0 1 1 1 1 0 0 1 1 0 1 0
–   Bestia 0.902122+15
−15
(−93)18.5 − 9.5
(+16−7=5)
66.1%
18.5 / 28
100.0%
+29
55.0%
2430
1.04
1336
1 1 1 = 1 1 = 0 1 = 1 1 1 0 0 = = 0 1 1 1 1 0 1 1 0 1 0
–   Ax 0.82119+15
−15
(−96)20 − 6
(+19−5=2)
76.9%
20.0 / 26
100.0%
+138
  
1 0 1 1 1 1 1 1 1 1 1 0 1 = = 1 0 1 1 1 0 0 1 1 1 1
–   Gerbil 02 64-bit JA2118+18
−18
(−97)19 − 13
(+16−10=6)
59.4%
19.0 / 32
100.0%
−26
53.7%
2847
0.95
1528
= = 0 1 1 0 0 0 1 1 0 = 1 1 = 0 1 0 1 1 1 0 1 1 0 0 1 = 1 1 1 =
–   BigLion 2.23x2117+17
−17
(−98)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
100.0%
+10
52.7%
2460
0.88
1297
= 1 0 1 1 1 0 1 1 0 1 1 1 = = 1 0 0 1 0 1 1 1 0 1 1 0 1 = = 0 1
–   RDChess 3.232117+16
−16
(−98)19.5 − 12.5
(+14−7=11)
60.9%
19.5 / 32
100.0%
−27
56.0%
1879
0.67
1053
1 = = = = 0 1 = 1 = 1 0 1 = 1 1 0 1 0 1 1 = = 0 = 1 1 1 0 = 0 1
–   DelphiMax 2.92102+16
−16
(−113)17.5 − 6.5
(+16−5=3)
72.9%
17.5 / 24
100.0%
+72
59.4%
1784
0.95
1060
1 1 1 = 1 1 0 0 1 1 0 = 1 1 1 0 1 1 = 0 1 1 1 1
–   Armageddon 2.3082098+17
−17
(−117)18.5 − 13.5
(+16−11=5)
57.8%
18.5 / 32
100.0%
−58
54.5%
2291
0.88
1248
0 1 0 1 0 1 1 = = 1 0 1 0 1 0 = 0 1 0 = 0 1 = 1 0 1 1 0 1 1 1 1
–   Requiem 0.532084+15
−15
(−131)21.5 − 10.5
(+15−4=13)
67.2%
21.5 / 32
100.0%
−21
58.2%
1442
0.72
839
1 = 1 = 1 = = 0 1 1 0 1 = 1 = 1 0 1 = = 1 = 1 0 = 1 = 1 1 = 1 =
–   Small Potato 0.6.12082+16
−16
(−133)21 − 11
(+17−7=8)
65.6%
21.0 / 32
100.0%
−21
54.0%
2618
1.15
1415
1 = = 1 1 1 1 1 0 = 1 0 0 1 = = 1 = = 1 = 1 0 1 1 1 1 0 0 1 0 1
–   Elephant 1.062075+16
−16
(−140)17.5 − 6.5
(+16−5=3)
72.9%
17.5 / 24
100.0%
+41
56.9%
1475
1.12
840
1 1 0 1 = 0 1 = 1 = 1 1 0 1 1 1 1 1 0 1 0 1 1 1
–   Cilian 4.142069+16
−16
(−146)20 − 12
(+17−9=6)
62.5%
20.0 / 32
100.0%
−53
  
1 1 = 1 1 1 0 1 1 1 = 1 = 0 = 1 1 0 1 = 0 1 0 1 1 1 0 = 0 0 0 1
–   JanWillem 1.132062+16
−16
(−153)19.5 − 9.5
(+17−7=5)
67.2%
19.5 / 29
100.0%
−22
57.8%
2146
1.05
1240
= 0 0 0 1 1 1 = 1 0 1 1 = 1 1 1 1 = 1 0 1 = 1 1 0 1 1 0 1
–   Marvin 1.3.02054+16
−16
(−161)24.5 − 3.5
(+24−3=1)
87.5%
24.5 / 28
100.0%
+202
57.5%
2593
1.08
1492
1 1 1 1 1 1 1 1 1 0 1 0 1 1 = 1 1 1 1 1 1 1 1 1 1 0 1 1
–   Faile 1.4.42042+15
−15
(−173)20 − 9
(+18−7=4)
69.0%
20.0 / 29
100.0%
−22
57.7%
2370
0.94
1368
= 1 1 1 0 1 1 = 0 1 1 1 1 0 1 1 1 1 1 1 0 1 0 = 1 = 1 0 0
–   Sharper 0.172022+16
−16
(−193)20.5 − 3.5
(+19−2=3)
85.4%
20.5 / 24
100.0%
+110
54.9%
2077
1.16
1141
= 1 1 1 1 = 1 1 0 1 1 0 1 1 1 1 1 = 1 1 1 1 1 1
–   BibiChess 0.52007+16
−16
(−208)25.5 − 6.5
(+22−3=7)
79.7%
25.5 / 32
100.0%
+16
  
1 1 0 0 = = 1 1 1 = = 1 = 1 1 1 = 1 0 1 1 1 = 1 1 1 1 1 1 1 1 1

Performance

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

Perf = C − 0.199 [±0.138] * 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