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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Mustang 4.97 WB#151–152  (2021+17
−17		)Quote
Author: Alexey Korneychuk (Belarus) Released: 2007-12-21Link: Homepage
Issues with this engine: Mustang 4.97 does not count opening moves as part of the time control when external opening book is used. This leads to incorrect time allocation and time trouble. (See discussion about the same bug in other engines). Because of this bug Mustang often loses games on time.
This is the only Mustang version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Bodo 0.2b2137+15
−15		(+116)9 − 23
(+6−20=6)
28.1%
9.0 / 32
0.0%
−50
54.1%
1783
0.72
965
0 0 = 1 = 0 0 = 0 0 0 1 = = 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 = 1 1
–   Monarch 1.72131+16
−16		(+110)6.5 − 25.5
(+4−23=5)
20.3%
6.5 / 32
0.0%
−128
51.2%
1760
1.22
901
0 0 0 = = 0 0 0 1 0 0 0 0 0 0 0 = 0 1 0 0 0 = 1 1 0 = 0 0 0 0 0
–   Bestia 0.902122+15
−15		(+101)11 − 21
(+6−16=10)
34.4%
11.0 / 32
0.0%
−2
52.4%
1598
0.99
837
1 0 0 0 = 0 0 0 0 = = = 0 = 1 = 0 = 1 = 0 = 1 0 1 0 1 0 0 0 = 0
–   Ax 0.82119+15
−15		(+98)13 − 19
(+7−13=12)
40.6%
13.0 / 32
0.0%
+36
  
1 1 = 1 0 = 0 0 1 0 0 0 0 1 = = = 1 0 = = 0 = 0 = 0 = 0 1 = 0 =
–   Gerbil 02 64-bit JA2118+18
−18		(+97)13 − 19
(+7−13=12)
40.6%
13.0 / 32
0.0%
+37
50.3%
1581
0.90
795
1 = = = 0 1 0 0 0 1 = 1 0 0 = = 0 = 1 0 = 1 = 0 = 0 0 0 = = 0 1
–   BigLion 2.23x2117+17
−17		(+96)11 − 21
(+5−15=12)
34.4%
11.0 / 32
0.0%
−3
52.9%
1456
0.73
770
0 = 0 0 1 0 = = 0 = = 0 = = 0 0 = = 1 = 0 = 0 1 = 0 0 0 1 0 1 0
–   RDChess 3.232117+16
−16		(+96)11.5 − 20.5
(+7−16=9)
35.9%
11.5 / 32
0.0%
−1
51.8%
1661
1.12
860
0 1 1 = 0 1 0 0 1 = 0 0 1 1 = 0 0 = 0 0 0 1 = 0 = = 0 0 = 0 = 0
–   DelphiMax 2.92102+16
−16		(+81)13 − 19
(+9−15=8)
40.6%
13.0 / 32
0.0%
+15
50.8%
1812
0.86
921
= 0 0 = 1 = 0 0 0 0 0 = = 0 1 = = 0 1 0 1 1 1 0 0 0 = 1 1 0 1 0
–   Armageddon 2.3082098+17
−17		(+77)15 − 17
(+10−12=10)
46.9%
15.0 / 32
0.0%
+55
56.2%
1578
0.56
887
= 1 = 1 = = 1 0 0 = 1 0 = = 0 0 1 1 1 1 0 = = 0 1 0 0 0 0 0 = 1
–   Requiem 0.532084+15
−15		(+63)19.5 − 12.5
(+14−7=11)
60.9%
19.5 / 32
0.0%
+135
52.1%
1434
0.76
747
1 0 1 = 1 1 1 1 1 0 1 0 1 0 1 1 = 0 = = = = 1 = = = 0 0 1 = 1 =
–   Small Potato 0.6.12082+16
−16		(+61)14.5 − 17.5
(+6−9=17)
45.3%
14.5 / 32
0.0%
+33
50.8%
1080
0.94
549
= 0 = = 0 1 0 = = = 0 1 1 = = 0 0 = = = 0 0 = 0 = 1 = = = = 1 1
–   Elephant 1.062075+16
−16		(+54)17 − 15
(+15−13=4)
53.1%
17.0 / 32
0.0%
+78
53.9%
1920
0.79
1034
1 1 0 1 0 1 1 0 1 1 0 0 0 1 1 0 0 0 = 1 1 = 0 0 0 1 0 1 1 = = 1
–   La Dame Blanche 2.0c2070+19
−19		(+49)17 − 15
(+13−11=8)
53.1%
17.0 / 32
0.0%
+72
51.8%
1756
1.30
909
= 1 0 0 = 1 1 0 = 0 = 1 1 0 0 = 1 = 1 0 1 0 1 = = 1 0 0 1 0 1 1
–   Cilian 4.142069+16
−16		(+48)14.5 − 17.5
(+9−12=11)
45.3%
14.5 / 32
0.0%
+15
  
0 1 1 0 = 1 = 1 1 = 1 1 = 0 0 = 0 1 0 = 0 0 = = = 0 = 0 1 0 = 0
–   Etude 0.1.22063+19
−19		(+42)19 − 13
(+15−9=8)
59.4%
19.0 / 32
0.0%
+107
53.0%
1697
0.54
900
1 = 0 = 1 1 1 0 1 = 1 = 1 = 1 0 = 0 0 1 0 1 1 0 = 1 0 1 = 1 0 1
–   Gullydeckel 2.16pl12062+19
−19		(+41)13 − 19
(+7−13=12)
40.6%
13.0 / 32
0.0%
−18
51.2%
1479
0.69
757
0 = = 0 1 1 1 0 0 1 = 0 = = 0 1 0 = = = 0 = 0 1 0 = = 0 = 1 0 0
–   JanWillem 1.132062+16
−16		(+41)15 − 17
(+12−14=6)
46.9%
15.0 / 32
0.0%
+16
52.6%
1956
0.97
1029
1 1 0 0 1 1 0 1 = 0 = 1 0 1 = 0 1 0 0 = 1 0 0 0 = 0 1 = 0 1 1 0
–   Marvin 1.3.02054+16
−16		(+33)14 − 18
(+9−13=10)
43.8%
14.0 / 32
0.1%
−12
58.4%
1725
0.68
1007
= = = 0 1 0 0 0 1 0 0 = 0 1 = 0 0 1 = 1 = 1 = 1 0 1 = 1 = 0 0 0
–   Matant 5.042053+17
−17		(+32)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
0.2%
+21
51.2%
1775
0.93
909
1 0 0 0 0 1 0 0 0 = 1 0 = 1 0 1 0 1 0 1 = 0 1 = 1 = = 1 1 0 1 =
–   SSEChessII 2.05 DC2049+17
−17		(+28)18 − 14
(+14−10=8)
56.3%
18.0 / 32
0.5%
+74
53.8%
1811
0.89
975
0 1 1 = = = 0 0 1 0 1 1 1 0 1 = 1 = 1 1 0 1 0 0 0 0 1 = = 1 1 =
–   Faile 1.4.42042+15
−15		(+21)20 − 12
(+16−8=8)
62.5%
20.0 / 32
2.2%
+111
53.3%
1871
0.68
997
0 1 0 1 0 1 = 0 1 1 0 1 = = 1 0 1 = 0 1 = 1 1 = 1 1 1 1 0 = 1 =
–   Smash 1.0.32036+17
−17		(+15)15 − 17
(+11−13=8)
46.9%
15.0 / 32
8.1%
−5
52.2%
1973
0.78
1030
0 1 = 0 0 0 0 1 1 = 0 1 1 = 1 0 0 1 = 0 1 0 1 0 0 = 1 = = 0 1 =
–   Micro-Max 4.8 PIV DM2028+17
−17		(+7)17.5 − 14.5
(+10−7=15)
54.7%
17.5 / 32
25.3%
+36
75.6%
1243
1.02
940
0 1 0 = = = = 0 0 1 = 1 = 1 1 = = 1 0 = 1 1 = 0 1 1 = = = 0 = =
–   Sharper 0.172022+16
−16		(+1)12 − 20
(+8−16=8)
37.5%
12.0 / 32
46.5%
−87
49.9%
1623
0.92
810
1 = = 0 0 0 0 = 0 0 1 1 0 0 1 0 0 1 0 = = 0 1 0 0 1 0 = = 0 = 1
–   Rival UCI 1.182021+17
−17		(0)18 − 14
(+14−10=8)
56.3%
18.0 / 32
49.7%
+43
50.9%
1744
0.81
888
= 0 1 0 1 0 = = 1 0 = 0 1 = 1 1 1 0 0 1 1 = = 1 0 1 1 = 0 0 1 1
–   BibiChess 0.52007+16
−16		(−14)16 − 16
(+12−12=8)
50.0%
16.0 / 32
90.2%
−15
  
1 1 1 0 1 1 0 = = 1 = 0 0 1 0 0 = 1 0 0 1 = = 0 = = 1 0 0 1 0 1
–   IACH 0.56z1995+18
−18		(−26)19 − 13
(+14−8=10)
59.4%
19.0 / 32
98.9%
+35
62.7%
1503
1.07
943
1 1 0 0 = 1 1 = = 0 1 0 = 1 = 1 0 0 = 1 = 1 1 0 = 1 1 1 0 = 1 =
–   Heracles 0.6.161993+19
−19		(−28)17.5 − 14.5
(+15−12=5)
54.7%
17.5 / 32
99.0%
+5
51.9%
1924
0.74
998
0 1 0 1 1 0 1 = 0 = 0 1 0 1 1 1 = = 1 = 0 1 0 1 1 0 1 1 1 0 0 0
–   Clueless 1.41990+18
−18		(−31)21.5 − 10.5
(+18−7=7)
67.2%
21.5 / 32
99.6%
+94
52.7%
1814
0.86
956
1 1 1 = 1 0 0 0 1 1 = = = 0 0 1 1 1 1 1 = 1 = 1 1 = 1 1 0 1 0 1
–   Warrior 1.0.31987+17
−17		(−34)13.5 − 18.5
(+8−13=11)
42.2%
13.5 / 32
99.9%
−86
55.6%
1497
0.66
833
0 1 0 = 0 1 = 0 0 = = 0 1 0 1 1 1 0 = 0 1 1 = 0 = 0 0 = = 0 = =
–   Morphy 3.221974+17
−17		(−47)19.5 − 12.5
(+14−7=11)
60.9%
19.5 / 32
100.0%
+24
51.2%
1515
2.67
776
1 1 = 0 0 0 1 1 = 1 1 = 1 = = = = = 1 1 = 1 1 0 = 1 0 = 0 0 1 1
–   Eagle 0.7.51973+20
−20		(−48)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
100.0%
−35
49.4%
1860
0.79
919
= 1 0 1 = 1 0 0 0 = 0 1 = 0 0 1 = 0 0 1 0 1 1 0 1 1 1 = = 1 0 1
–   SnailChess 4.0131973+19
−19		(−48)16.5 − 15.5
(+12−11=9)
51.6%
16.5 / 32
100.0%
−36
77.2%
1471
1.55
1135
1 = 1 0 = 0 0 0 0 1 0 1 = 0 1 0 0 = 0 1 1 = = 1 = 1 = 1 0 1 1 =
–   Celes 0.77c1921+20
−20		(−100)16.5 − 15.5
(+11−10=11)
51.6%
16.5 / 32
100.0%
−90
49.7%
1588
0.97
790
0 0 = = 0 0 1 0 1 1 1 1 = = = 0 1 1 0 0 0 = 1 = 1 = = = = 0 1 1
–   Simontacchi 1.811915+20
−20		(−106)21 − 11
(+19−9=4)
65.6%
21.0 / 32
100.0%
+17
52.0%
1773
0.66
922
0 1 0 1 1 1 = = 0 1 0 0 1 = 1 1 1 1 = 1 1 1 1 0 1 0 0 1 1 1 1 0
–   Ranita 2.41907+20
−20		(−114)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
100.0%
−6
57.6%
1872
0.87
1078
1 1 1 1 0 0 0 1 = = 1 = = 1 = 0 1 1 0 0 0 1 1 1 0 1 1 1 0 1 1 1
–   Cecir 3.51885+19
−19		(−136)24 − 8
(+22−6=4)
75.0%
24.0 / 32
100.0%
+66
50.2%
1984
0.87
996
1 = 0 1 1 1 1 0 0 1 1 1 1 1 = 1 1 1 = 1 0 1 1 1 0 1 0 1 = 1 1 1
–   Enigma 1.1.41879+21
−21		(−142)20 − 12
(+14−6=12)
62.5%
20.0 / 32
100.0%
−61
46.3%
1352
0.88
626
= 1 1 = 0 = 1 1 = = 1 0 0 1 = 1 = 1 1 = 1 1 0 0 1 = = 0 1 1 = =
–   Soldat 0.25b1873+17
−17		(−148)22.5 − 9.5
(+18−5=9)
70.3%
22.5 / 32
100.0%
−4
51.5%
1650
0.71
850
1 1 1 = 1 1 0 1 1 = = 0 1 0 = = 1 1 1 = = 1 0 1 1 1 0 1 1 = 1 =
–   Grizzly 1.40.1b1837+20
−20		(−184)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
100.0%
−101
52.6%
1754
0.65
923
1 = = 1 = 1 0 1 1 0 = 1 0 1 1 1 1 0 1 0 1 1 = 0 1 0 = 0 = 1 0 1
–   Robin 0.9831834+20
−20		(−187)19 − 13
(+16−10=6)
59.4%
19.0 / 32
100.0%
−118
46.4%
1783
0.75
827
1 0 0 1 1 0 = 1 0 0 0 0 = = 1 = 1 0 1 1 1 1 0 1 1 = 0 1 1 1 1 =
–   Elf 1.3.01820+18
−18		(−201)23.5 − 8.5
(+22−7=3)
73.4%
23.5 / 32
100.0%
−4
50.0%
1611
0.77
806
1 1 1 = 1 0 0 1 1 1 0 1 1 1 0 0 1 1 1 = 1 1 1 0 1 = 1 1 1 1 0 1
–   Laurifer 1.01815+18
−18		(−206)24 − 8
(+21−5=6)
75.0%
24.0 / 32
100.0%
−13
59.2%
1852
0.66
1097
1 0 1 = 1 = 1 0 0 = 1 1 1 1 1 1 1 = 1 = 1 1 1 1 1 0 1 1 1 0 1 =
–   Aldebaran 0.7.01794+19
−19		(−227)22.5 − 9.5
(+18−5=9)
70.3%
22.5 / 32
100.0%
−84
54.6%
1280
0.70
699
1 1 0 1 = = 1 1 1 = = 0 0 0 1 1 1 0 1 = 1 1 = 1 1 1 = = = 1 1 1
–   Adamant 1.71790+19
−19		(−231)21.5 − 10.5
(+19−8=5)
67.2%
21.5 / 32
100.0%
−99
55.0%
1739
0.78
956
1 0 1 1 1 0 1 0 = 0 1 1 = 1 0 1 1 = 1 1 1 1 = 0 1 = 1 0 1 0 1 1
–   SEE 0.6.91781+21
−21		(−240)26 − 6
(+23−3=6)
81.3%
26.0 / 32
100.0%
+5
47.8%
1932
0.92
923
= 1 = 1 0 1 1 1 1 1 1 1 1 1 1 = 1 0 = = 1 1 1 1 1 0 1 1 1 = 1 1
–   Mizar 3.01767+20
−20		(−254)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
−197
46.1%
1727
1.38
796
1 0 1 1 1 1 0 1 0 = 1 0 = = 1 1 = = 1 1 1 0 0 = = 1 0 0 1 0 1 0
1504 games in total: 604 wins, 505 losses, 395 draws (26.3%), score: 53.3%
Average opponent: −28.6 (1992.4), average distance to opponent: 88.5

Performance

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

Perf = C + 0.290 [±0.160] * 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