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
Belzebub 0.67 WB#176  (1744+22
−22		)Quote
Author: Radoslaw Kamowski (Poland) Released: 2008-02-04Link: RWBC
Issues with this engine: Occasional losses on time.
This is the only Belzebub version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   IACH 0.56z1995+18
−18		(+251)6.5 − 25.5
(+3−22=7)
20.3%
6.5 / 32
0.0%
+25
61.5%
2102
1.11
1292
= 0 1 0 = 0 = = 0 0 0 0 0 0 0 0 = 1 0 = = 0 0 0 0 0 1 0 0 0 0 0
–   Clueless 1.41990+18
−18		(+246)7 − 25
(+5−23=4)
21.9%
7.0 / 32
0.0%
+16
45.9%
2157
1.93
991
1 = 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 = 0 = = 1 0 0 1 0 0 0
–   Warrior 1.0.31987+17
−17		(+243)8 − 24
(+6−22=4)
25.0%
8.0 / 32
0.0%
+40
52.3%
2438
1.30
1274
0 1 0 0 1 0 0 1 0 0 0 0 0 = = 0 0 1 0 0 0 0 = 0 0 0 1 0 1 = 0 0
–   Morphy 3.221974+17
−17		(+230)9 − 23
(+5−19=8)
28.1%
9.0 / 32
0.0%
+70
50.7%
1998
4.06
1013
1 0 0 = 0 = 0 = = 0 0 0 = 0 0 0 1 0 = 0 1 0 1 0 0 = 0 0 1 = 0 0
–   Eagle 0.7.51973+20
−20		(+229)9.5 − 22.5
(+6−19=7)
29.7%
9.5 / 32
0.0%
+80
44.7%
2020
1.66
902
0 0 0 0 = 1 1 0 0 0 0 0 1 = 0 0 = 0 1 = = = 0 = 0 0 0 1 0 0 1 0
–   SnailChess 4.0131973+19
−19		(+229)8.5 − 23.5
(+4−19=9)
26.6%
8.5 / 32
0.0%
+62
72.6%
1522
1.09
1105
= 0 0 1 1 0 = = 0 0 0 1 = 0 0 0 0 0 0 = = 0 = = 0 0 0 0 0 1 = 0
–   Celes 0.77c1921+20
−20		(+177)8 − 24
(+3−19=10)
25.0%
8.0 / 32
0.0%
+5
46.4%
1882
2.08
873
0 0 0 = = 0 = 0 = 0 = 1 0 = 0 0 0 0 0 = 0 = = 0 0 1 0 1 0 0 0 =
–   Simontacchi 1.811915+20
−20		(+171)5.5 − 26.5
(+2−23=7)
17.2%
5.5 / 32
0.0%
−80
51.8%
1825
1.23
946
0 0 = = 0 0 0 0 0 0 = 1 0 = 0 0 0 0 0 0 = 0 0 0 0 0 1 0 0 = = 0
–   Ranita 2.41907+20
−20		(+163)7 − 25
(+3−21=8)
21.9%
7.0 / 32
0.0%
−42
51.7%
1963
1.20
1015
0 0 1 = 0 0 1 0 0 0 0 0 = 0 0 0 0 0 = 1 = 0 = = 0 0 0 = = 0 0 0
–   Cecir 3.51885+19
−19		(+141)9 − 23
(+6−20=6)
28.1%
9.0 / 32
0.0%
−24
49.2%
2097
1.52
1032
= 0 1 = 0 1 0 0 1 0 0 0 = 0 0 0 0 1 0 0 0 1 0 0 1 = = 0 0 = 0 0
–   Enigma 1.1.41879+21
−21		(+135)10.5 − 21.5
(+7−18=7)
32.8%
10.5 / 32
0.0%
+9
44.6%
2417
2.24
1077
0 0 = 0 0 0 0 0 0 1 0 0 1 = 0 1 0 0 0 = = = = 1 1 0 1 1 0 = 0 0
–   Soldat 0.25b1873+17
−17		(+129)9 − 23
(+5−19=8)
28.1%
9.0 / 32
0.0%
−27
47.3%
2027
1.54
959
0 = 0 0 0 0 0 = 1 0 0 0 0 1 0 0 = = = = 1 0 0 0 0 1 0 1 0 0 = =
–   Grizzly 1.40.1b1837+20
−20		(+93)10.5 − 21.5
(+7−18=7)
32.8%
10.5 / 32
0.0%
−32
45.6%
1725
1.33
786
= 0 0 = 1 0 1 0 1 0 0 = 0 1 = 0 0 1 1 = 0 0 0 0 0 0 = = 0 0 0 1
–   Robin 0.9831834+20
−20		(+90)9 − 23
(+5−19=8)
28.1%
9.0 / 32
0.0%
−67
44.5%
2390
1.39
1064
1 0 0 0 = 0 0 1 = 0 1 0 = = 0 0 0 0 0 0 1 = 0 = 0 0 = 0 0 0 = 1
–   Elf 1.3.01820+18
−18		(+76)14.5 − 17.5
(+10−13=9)
45.3%
14.5 / 32
0.0%
+43
50.8%
1607
1.43
816
0 1 1 = 0 0 0 0 1 0 = 0 1 1 1 1 = = = 0 0 0 = 0 = = 0 = 1 1 1 0
–   Laurifer 1.01815+18
−18		(+71)10 − 22
(+7−19=6)
31.3%
10.0 / 32
0.0%
−70
49.8%
1756
1.31
874
0 1 0 1 = 0 = 0 0 1 1 0 0 0 1 0 0 = 0 = = = 0 0 0 0 0 0 1 0 0 1
–   Kanguruh 1.931806+22
−22		(+62)16 − 16
(+11−11=10)
50.0%
16.0 / 32
0.0%
+62
46.8%
1965
1.79
920
1 0 0 0 1 = 0 0 1 = = 1 1 0 = 1 1 0 = 1 = = 0 0 1 0 = = 1 = 1 0
–   Aldebaran 0.7.01794+19
−19		(+50)16.5 − 15.5
(+10−9=13)
51.6%
16.5 / 32
0.0%
+60
49.3%
1434
1.24
707
= 0 0 = 0 1 0 = 1 1 0 1 = = 1 = = 0 0 = 0 1 = = 1 1 = 1 1 0 = =
–   Adamant 1.71790+19
−19		(+46)16.5 − 15.5
(+12−11=9)
51.6%
16.5 / 32
0.0%
+57
52.0%
2350
1.62
1221
0 = 1 1 = = = 1 1 1 1 0 = 0 0 1 1 0 1 = 1 0 1 = = 0 1 = 0 0 0 0
–   SEE 0.6.91781+21
−21		(+37)15 − 17
(+11−13=8)
46.9%
15.0 / 32
0.3%
+12
45.7%
2395
1.30
1095
= = 0 0 = 0 0 1 0 0 = 0 = 0 0 0 1 1 = 1 = = 1 0 1 1 0 1 0 1 1 1
–   Mizar 3.01767+20
−20		(+23)17 − 15
(+13−11=8)
53.1%
17.0 / 32
4.0%
+41
46.0%
2174
2.06
999
1 1 0 1 = 1 0 1 = 0 1 0 0 1 = 0 = 1 0 1 0 0 = = 1 1 = 1 = 1 0 0
–   ALChess 1.5b1729+22
−22		(−15)14.5 − 17.5
(+8−11=13)
45.3%
14.5 / 32
85.9%
−42
48.6%
1552
1.52
755
1 = 1 = = 1 1 0 = 0 = 0 0 = 1 = 0 0 0 0 = 0 0 = 1 1 0 = 1 = = =
–   IQ23 0031716+23
−23		(−28)13 − 19
(+5−11=16)
40.6%
13.0 / 32
97.4%
−83
44.2%
758
1.46
335
= = = 1 0 = = = = 0 1 = 1 1 0 1 0 = = = 0 = 0 0 = 0 = 0 = 0 0 =
–   Rainman 0.7.51687+24
−24		(−57)20.5 − 11.5
(+14−5=13)
64.1%
20.5 / 32
100.0%
+31
53.0%
1558
1.62
825
= 1 1 1 = = = 0 1 1 1 = 0 1 1 = = = = 1 0 1 0 = = = = 1 0 1 1 1
–   Storm 0.61673+25
−25		(−71)16.5 − 15.5
(+12−11=9)
51.6%
16.5 / 32
100.0%
−61
53.0%
1435
1.36
760
= = 0 1 1 0 0 1 1 = 1 1 0 = 1 1 0 = 0 1 = = 1 = 0 0 0 1 = 1 0 0
–   Zotron 4.4.61669+24
−24		(−75)17 − 15
(+12−10=10)
53.1%
17.0 / 32
100.0%
−54
41.6%
1991
1.39
828
1 = 0 0 1 = 1 0 1 0 = 0 = = 0 1 = 1 0 = 0 1 = 1 = 1 = 1 0 1 1 0
–   Needle 0.53.11648+25
−25		(−96)21 − 11
(+16−6=10)
65.6%
21.0 / 32
100.0%
+9
50.4%
1964
1.13
990
0 1 1 0 1 1 = 1 = = 1 = = = 0 0 = 1 1 1 1 0 1 1 1 1 = = 0 1 1 =
–   Exacto 0.d1607+26
−26		(−137)23.5 − 8.5
(+21−6=5)
73.4%
23.5 / 32
100.0%
+48
41.4%
1270
1.30
526
1 1 1 1 = = 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 0 = 0 1 1 = 1 1 0 = 0
–   Piranha 0.51574+28
−28		(−170)24.5 − 7.5
(+23−6=3)
76.6%
24.5 / 32
100.0%
+52
44.6%
2072
1.83
924
1 1 1 1 1 = 1 1 0 1 1 = 1 0 1 0 = 0 1 1 1 0 1 1 1 1 1 1 1 1 1 0
–   ChessterfieldCL i5a JA1546+29
−29		(−198)23.5 − 8.5
(+17−2=13)
73.4%
23.5 / 32
100.0%
−48
44.6%
1588
1.73
708
= 1 0 1 = 1 1 = = 1 1 1 = 1 1 = 1 1 0 = 1 1 = = 1 = 1 1 = = = 1
–   MiniMardi 1.31503+33
−33		(−241)24.5 − 7.5
(+19−2=11)
76.6%
24.5 / 32
100.0%
−61
41.4%
845
1.34
350
1 1 = 1 = 1 1 1 1 1 = = 1 1 1 = = 0 = 1 1 1 0 1 1 = = = 1 = 1 1
992 games in total: 288 wins, 438 losses, 266 draws (26.8%), score: 42.4%
Average opponent: +58.2 (1802.2), average distance to opponent: 128.4

Performance

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

Perf = C + 0.101 [±0.129] * 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