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
Simontacchi 1.81 UCI#162  (1915+20
−20
)Quote
Author: Mike Maxim (USA) Released: 2003-08-19Links: Homepage, SourceForge
Issues with this engine: Frequent losses on time.
This is the only Simontacchi version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   JanWillem 1.132062+16
−16
(+147)5.5 − 26.5
(+5−26=1)
17.2%
5.5 / 32
0.0%
−159
54.5%
2545
0.89
1387
0 0 0 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 = 0 0 0 0 1 0
–   Marvin 1.3.02054+16
−16
(+139)9.5 − 22.5
(+9−22=1)
29.7%
9.5 / 32
0.0%
−38
54.9%
2687
0.75
1475
1 1 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 = 0
–   Matant 5.042053+17
−17
(+138)1 − 31
(+0−30=2)
3.1%
1.0 / 32
0.0%
−391
53.5%
2047
1.03
1096
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 = 0 0 0 0 0 0 0 0 0 0 0 0 = 0 0
–   SSEChessII 2.05 DC2049+17
−17
(+134)9.5 − 22.5
(+7−20=5)
29.7%
9.5 / 32
0.0%
−24
52.0%
2221
1.08
1155
0 0 0 0 1 1 0 0 0 = 0 0 0 0 0 0 0 1 = 0 0 0 0 0 = 1 = = 1 0 1 1
–   Faile 1.4.42042+15
−15
(+127)7.5 − 24.5
(+6−23=3)
23.4%
7.5 / 32
0.0%
−96
53.7%
2428
0.57
1305
1 0 1 1 0 = 0 1 0 0 0 0 0 1 1 0 0 0 0 0 = 0 0 0 0 0 0 0 0 0 = 0
–   Smash 1.0.32036+17
−17
(+121)6.5 − 25.5
(+4−23=5)
20.3%
6.5 / 32
0.0%
−114
49.7%
2095
0.99
1041
0 0 1 = 0 0 0 0 0 = 0 = = 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 = 0 0
–   Micro-Max 4.8 PIV DM2028+17
−17
(+113)12.5 − 19.5
(+9−16=7)
39.1%
12.5 / 32
0.0%
+33
76.6%
2169
0.90
1661
0 0 1 0 0 = 1 0 0 0 1 1 = 1 0 0 0 = = 1 0 1 0 = 1 0 0 1 0 0 = =
–   Sharper 0.172022+16
−16
(+107)11.5 − 20.5
(+10−19=3)
35.9%
11.5 / 32
0.0%
−6
54.4%
2390
0.71
1301
0 = 1 1 0 = = 0 1 0 0 0 0 0 0 0 1 0 0 1 1 1 0 0 1 0 1 0 1 0 0 0
–   Mustang 4.972021+17
−17
(+106)11 − 21
(+9−19=4)
34.4%
11.0 / 32
0.0%
−17
52.0%
1773
0.66
922
1 0 1 0 0 0 = = 1 0 1 1 0 = 0 0 0 0 = 0 0 0 0 1 0 1 1 0 0 0 0 1
–   Rival UCI 1.182021+17
−17
(+106)10.5 − 21.5
(+10−21=1)
32.8%
10.5 / 32
0.0%
−44
52.1%
2210
0.91
1152
0 0 0 1 1 1 0 0 0 0 0 1 0 1 0 0 = 0 1 0 0 1 1 1 1 0 0 0 0 0 0 0
–   BibiChess 0.52007+16
−16
(+92)13.5 − 18.5
(+11−16=5)
42.2%
13.5 / 32
0.0%
+30
  
1 0 = 0 0 1 0 0 0 1 = 0 0 1 = 1 = 0 0 = 0 1 0 0 1 1 1 0 1 1 0 0
–   IACH 0.56z1995+18
−18
(+80)8.5 − 23.5
(+7−22=3)
26.6%
8.5 / 32
0.0%
−114
64.0%
1955
0.88
1251
0 1 0 0 0 0 0 0 1 0 1 0 1 0 0 1 0 0 1 0 0 0 0 0 0 = 0 = = 1 0 0
–   Heracles 0.6.161993+19
−19
(+78)12 − 20
(+9−17=6)
37.5%
12.0 / 32
0.0%
−14
51.5%
2321
1.10
1195
0 0 = 1 0 1 0 = 0 0 0 0 = 1 1 0 0 1 0 0 1 0 1 0 1 = = 1 = 0 0 0
–   Clueless 1.41990+18
−18
(+75)13 − 19
(+12−18=2)
40.6%
13.0 / 32
0.0%
−2
54.3%
2471
1.34
1342
0 0 0 0 0 1 1 1 1 1 0 1 1 = 1 0 0 0 0 1 0 0 0 = 0 1 1 0 0 1 0 0
–   Warrior 1.0.31987+17
−17
(+72)13 − 19
(+11−17=4)
40.6%
13.0 / 32
0.0%
−4
56.4%
2358
0.52
1331
0 1 = 1 0 0 = 1 0 1 1 1 = 0 1 0 0 1 0 0 = 1 0 0 1 0 0 0 0 0 0 1
–   Morphy 3.221974+17
−17
(+59)12.5 − 19.5
(+11−18=3)
39.1%
12.5 / 32
0.0%
−28
56.7%
2447
3.77
1388
0 1 0 0 1 0 0 0 0 = 1 0 0 0 0 0 1 0 0 = = 0 1 1 1 1 0 1 1 0 1 0
–   Eagle 0.7.51973+20
−20
(+58)13.5 − 18.5
(+12−17=3)
42.2%
13.5 / 32
0.0%
−3
49.7%
2445
0.91
1216
1 1 = 1 = 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 1 0 1 0 = 0 0 0 1 1 1 0
–   SnailChess 4.0131973+19
−19
(+58)9.5 − 22.5
(+8−21=3)
29.7%
9.5 / 32
0.0%
−108
76.0%
1710
2.21
1299
0 0 0 1 0 0 0 0 0 0 1 1 1 0 0 0 0 0 1 0 0 = = 0 0 0 1 = 0 0 1 1
–   Celes 0.77c1921+20
−20
(+6)15.5 − 16.5
(+14−15=3)
48.4%
15.5 / 32
31.0%
−8
50.4%
2224
1.14
1122
1 0 0 = 0 0 1 = 1 0 0 0 0 1 0 0 1 0 0 0 1 1 1 1 0 = 1 0 1 1 1 1
–   Ranita 2.41907+20
−20
(−8)19 − 13
(+18−12=2)
59.4%
19.0 / 32
71.9%
+70
60.9%
2502
0.57
1523
1 0 0 1 0 0 1 1 0 0 1 1 0 1 1 0 1 1 1 1 0 1 0 0 = 1 1 = 1 1 1 0
–   Cecir 3.51885+19
−19
(−30)19 − 13
(+17−11=4)
59.4%
19.0 / 32
99.0%
+43
50.5%
2212
0.78
1116
1 0 1 1 1 0 = 1 0 1 1 1 = 1 0 1 1 = 1 = 1 1 0 0 0 0 1 0 0 1 0 1
–   Enigma 1.1.41879+21
−21
(−36)17 − 15
(+16−14=2)
53.1%
17.0 / 32
99.6%
−8
48.0%
2215
1.34
1063
0 1 0 1 0 0 = 0 1 1 1 1 1 0 0 1 1 0 0 0 1 1 1 1 1 1 = 0 1 0 0 0
–   Soldat 0.25b1873+17
−17
(−42)19 − 13
(+16−10=6)
59.4%
19.0 / 32
100.0%
+28
50.3%
2027
0.75
1020
1 1 1 = 1 1 0 0 0 0 0 1 1 = = 0 1 = = 1 1 = 0 0 1 1 1 0 0 1 1 1
–   Grizzly 1.40.1b1837+20
−20
(−78)21.5 − 10.5
(+21−10=1)
67.2%
21.5 / 32
100.0%
+71
53.1%
2166
0.53
1150
1 0 1 0 1 1 1 1 0 1 0 0 1 0 1 1 1 1 1 = 0 1 1 1 1 0 1 0 1 1 0 1
–   Robin 0.9831834+20
−20
(−81)17.5 − 14.5
(+17−14=1)
54.7%
17.5 / 32
100.0%
−40
50.6%
2583
0.62
1307
1 0 0 0 1 1 1 1 1 0 1 1 0 1 0 0 1 1 0 1 1 1 0 0 0 1 0 0 1 = 1 0
–   Elf 1.3.01820+18
−18
(−95)18.5 − 13.5
(+17−12=3)
57.8%
18.5 / 32
100.0%
−31
57.1%
2202
0.73
1258
1 1 1 1 0 1 1 1 1 1 0 0 1 = 1 0 0 = 1 0 1 0 0 1 1 1 1 0 0 0 = 0
–   Laurifer 1.01815+18
−18
(−100)22.5 − 9.5
(+19−6=7)
70.3%
22.5 / 32
100.0%
+48
54.0%
1719
0.83
929
= 1 = 1 1 1 = 1 1 0 1 1 1 1 = 1 0 = 1 0 1 = 1 1 1 0 1 = 1 0 0 1
–   Kanguruh 1.931806+22
−22
(−109)23.5 − 8.5
(+23−8=1)
73.4%
23.5 / 32
100.0%
+99
54.5%
2212
0.77
1206
1 1 1 1 1 0 0 1 1 1 1 1 1 1 1 1 0 1 1 0 0 1 1 0 = 0 1 1 1 1 0 1
–   Aldebaran 0.7.01794+19
−19
(−121)24.5 − 7.5
(+19−2=11)
76.6%
24.5 / 32
100.0%
+56
58.0%
1699
0.44
986
= 1 = 1 1 1 1 0 1 1 0 1 = 1 1 1 = = 1 1 1 = 1 1 = 1 = = = = 1 1
–   Adamant 1.71790+19
−19
(−125)21 − 11
(+19−9=4)
65.6%
21.0 / 32
100.0%
−1
55.2%
1911
0.74
1055
1 1 0 0 1 1 1 0 1 0 0 1 1 1 1 0 = = 1 1 1 0 0 1 1 1 1 1 0 = = 1
–   SEE 0.6.91781+21
−21
(−134)24.5 − 7.5
(+21−4=7)
76.6%
24.5 / 32
100.0%
+64
53.4%
1932
0.62
1032
1 1 1 1 1 = 1 1 = 0 0 1 1 0 1 1 = 1 = 1 1 1 0 1 1 = = = 1 1 1 1
–   Mizar 3.01767+20
−20
(−148)23 − 9
(+22−8=2)
71.9%
23.0 / 32
100.0%
+38
48.9%
2381
1.46
1164
1 1 0 1 1 0 0 1 1 = = 1 1 1 1 1 1 1 0 1 1 1 1 1 1 0 0 0 1 0 1 1
–   Belzebub 0.671744+22
−22
(−171)26.5 − 5.5
(+23−2=7)
82.8%
26.5 / 32
100.0%
+80
51.8%
1825
1.23
946
1 1 = = 1 1 1 1 1 1 = 0 1 = 1 1 1 1 1 1 = 1 1 1 1 1 0 1 1 = = 1
–   ALChess 1.5b1729+22
−22
(−186)28.5 − 3.5
(+28−3=1)
89.1%
28.5 / 32
100.0%
+208
54.1%
2002
0.66
1084
1 = 1 1 1 1 1 1 1 0 1 1 0 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
–   IQ23 0031716+23
−23
(−199)27.5 − 4.5
(+26−3=3)
85.9%
27.5 / 32
100.0%
+122
42.7%
1299
0.68
555
1 1 1 0 = 1 1 1 1 1 0 1 1 1 1 0 1 1 1 1 1 1 1 1 1 = 1 1 1 1 1 =
–   Rainman 0.7.51687+24
−24
(−228)27.5 − 4.5
(+27−4=1)
85.9%
27.5 / 32
100.0%
+120
53.2%
2145
0.60
1141
0 1 1 1 = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 0 1 1
–   Storm 0.61673+25
−25
(−242)26.5 − 5.5
(+25−4=3)
82.8%
26.5 / 32
100.0%
+42
51.8%
1685
0.70
873
1 = 1 = 1 1 0 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 = 1 0 0 1 1
–   Zotron 4.4.61669+24
−24
(−246)25.5 − 6.5
(+25−6=1)
79.7%
25.5 / 32
100.0%
+25
44.9%
1846
0.63
828
1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 0 1 1 1 0 1 1 0 = 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 − 0.501 [±0.193] * 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