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
Bruja 1.9 64-bit JA No-int-book WB#42  (2584+18
−18		)Quote
Author: Dan Honeycutt (USA) Released: 2005-03-19Links: WBEC, Jim Ablett's compile
"JA" compile is made by Jim Ablett. The one used here is a 64-bit compile without internal opening book.
This engine is stable and runs without issues.
This is the only Bruja version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Aristarch 4.502671+18
−18		(+87)10.5 − 16.5
(+8−14=5)
38.9%
10.5 / 27
0.0%
+4
55.4%
1569
0.69
869
1 0 0 0 = 0 0 = 1 1 0 0 1 0 1 0 = 1 = 0 0 0 0 1 1 0 =
–   Petir 4.9999992670+19
−19		(+86)7 − 18
(+3−14=8)
28.0%
7.0 / 25
0.0%
−66
58.6%
1585
0.62
929
0 0 = 0 1 0 = = 1 = 0 = 1 = 0 0 0 = 0 0 0 0 0 0 =
–   Hamsters 0.62669+18
−18		(+85)9 − 19
(+6−16=6)
32.1%
9.0 / 28
0.0%
−47
56.7%
2206
0.47
1251
0 0 0 0 0 0 = 0 0 = = 1 0 = 0 1 = 1 0 1 0 1 0 0 1 0 = 0
–   The Baron 2.23 64-bit2669+19
−19		(+85)12.5 − 19.5
(+9−16=7)
39.1%
12.5 / 32
0.0%
+5
51.0%
2272
1.15
1159
1 1 1 1 = 0 = 0 0 = 1 0 0 = 0 0 0 = 1 0 = 0 = 0 1 1 0 0 0 0 0 1
–   Booot 4.13.12668+18
−18		(+84)9.5 − 13.5
(+7−11=5)
41.3%
9.5 / 23
0.0%
+16
52.2%
1761
0.75
919
0 0 0 0 1 1 0 0 = = 1 0 1 0 = 1 1 1 0 = 0 0 =
–   BugChess2 1.5.22661+18
−18		(+77)8 − 16
(+7−15=2)
33.3%
8.0 / 24
0.0%
−58
52.5%
2210
0.68
1161
0 1 0 0 1 1 1 0 1 0 0 0 1 0 0 = 0 0 0 0 1 0 0 =
–   Jonny 2.832652+17
−17		(+68)10 − 15
(+6−11=8)
40.0%
10.0 / 25
0.0%
−4
52.9%
1807
0.86
956
0 = 0 0 0 0 = 0 1 0 0 = = 1 1 0 1 1 = 1 = = 0 0 =
–   Crafty 21.5 64-bit PS2652+17
−17		(+68)6 − 21
(+3−18=6)
22.2%
6.0 / 27
0.0%
−137
56.6%
2071
0.72
1173
= 0 = 0 0 = 0 0 0 0 = = 0 0 = 1 0 0 0 1 0 0 0 0 1 0 0
–   The Baron 1.8.12651+18
−18		(+67)10 − 18
(+6−14=8)
35.7%
10.0 / 28
0.0%
−32
50.7%
1747
1.27
885
0 = 0 0 1 0 0 0 0 = = = = 0 0 0 1 = 0 0 0 0 1 1 1 = = 1
–   Anaconda 2.0.12644+17
−17		(+60)11 − 15
(+6−10=10)
42.3%
11.0 / 26
0.0%
+9
53.0%
1600
0.64
848
= = 0 0 1 0 = = 1 = 0 = 1 1 0 = 0 = 1 0 0 1 0 0 = =
–   Fritz 5.322643+17
−17		(+59)12.5 − 16.5
(+7−11=11)
43.1%
12.5 / 29
0.0%
+11
59.9%
1855
0.70
1111
= = 1 = 0 1 0 0 = 1 0 = = = 0 = 1 = 1 = 0 0 0 = 1 0 0 1 0
–   Ktulu 4.22634+17
−17		(+50)11 − 11
(+8−8=6)
50.0%
11.0 / 22
0.0%
+45
57.7%
1809
0.75
1043
1 1 0 1 = 0 0 0 = = 1 0 1 1 1 = = = 1 0 0 0
–   Thinker 4.7a2634+17
−17		(+50)9.5 − 16.5
(+5−12=9)
36.5%
9.5 / 26
0.0%
−37
55.3%
2264
0.68
1251
0 = = 0 0 0 1 0 0 1 1 1 = = 0 = = 0 = 1 0 0 0 = = 0
–   SmarThink 0.17a2633+16
−16		(+49)14 − 13
(+11−10=6)
51.9%
14.0 / 27
0.0%
+60
58.6%
1911
0.69
1119
0 1 1 0 = 1 1 1 = 1 0 1 0 1 1 = = = 1 0 = 0 0 1 0 0 0
–   Ufim 8.022628+18
−18		(+44)11.5 − 13.5
(+8−10=7)
46.0%
11.5 / 25
0.0%
+15
53.0%
2200
0.74
1165
0 1 1 = = 0 0 1 = 0 0 0 0 = = 1 = 0 1 0 1 = 1 1 0
–   Trace 1.37a2622+17
−17		(+38)12.5 − 15.5
(+8−11=9)
44.6%
12.5 / 28
0.1%
−1
54.7%
1901
0.78
1039
1 0 1 = 0 1 = 1 0 0 1 0 = 1 0 = 0 0 1 1 0 = 0 = = 0 = =
–   AnMon 5.602621+18
−18		(+37)10 − 17
(+8−15=4)
37.0%
10.0 / 27
0.1%
−59
52.6%
2159
0.56
1136
1 0 1 0 1 = 0 = 0 0 0 0 0 0 0 0 0 1 1 1 1 = = 0 0 1 0
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17		(+30)8.5 − 16.5
(+6−14=5)
34.0%
8.5 / 25
0.5%
−88
52.5%
2007
0.85
1054
0 0 0 1 = 0 = 0 1 0 0 1 0 = = = 0 1 0 1 0 0 0 0 1
–   Yace 0.99.872609+17
−17		(+25)14.5 − 14.5
(+11−11=7)
50.0%
14.5 / 29
1.6%
+22
58.0%
2064
0.56
1197
0 0 0 0 1 = 1 0 1 1 = = = 0 0 = 1 1 = 1 1 = 1 1 0 0 1 0 0
–   Pepito 1.59 32-bit2595+19
−19		(+11)14 − 11
(+10−7=8)
56.0%
14.0 / 25
17.9%
+49
54.6%
1883
0.57
1028
1 = 0 1 1 0 1 = = = = 1 0 0 = 0 = 1 1 1 1 0 1 0 =
–   Green Light Chess 3.002582+17
−17		(−2)9.5 − 15.5
(+6−12=7)
38.0%
9.5 / 25
54.4%
−87
56.9%
1984
0.58
1129
0 0 0 0 = 0 = 1 1 = 1 = = 0 0 = 1 0 0 0 1 0 1 0 =
–   Tao 5.62574+17
−17		(−10)18.5 − 7.5
(+16−5=5)
71.2%
18.5 / 26
79.0%
+153
54.0%
2363
0.98
1275
1 1 1 0 1 1 1 = 1 1 = 0 1 1 = 0 = 1 1 1 1 0 0 = 1 1
–   Cerebro 3.03d2572+19
−19		(−12)16 − 16
(+12−12=8)
50.0%
16.0 / 32
82.6%
−13
50.1%
2628
0.76
1316
0 0 1 0 = 0 1 0 1 = 1 = = = 1 = 1 0 1 1 0 = 1 1 0 0 0 0 = 1 0 1
–   Twisted Logic 20080404x2568+18
−18		(−16)12 − 12
(+10−10=4)
50.0%
12.0 / 24
89.5%
−12
52.1%
1843
0.99
960
= 0 0 1 0 1 1 1 1 1 = 0 0 0 0 0 = 1 0 1 1 0 = 1
–   Arasan 10.0 64-bit2564+17
−17		(−20)13.5 − 15.5
(+9−11=9)
46.6%
13.5 / 29
95.2%
−45
53.1%
2123
0.71
1128
0 1 0 0 = 1 1 = 1 = 0 = = 1 = 1 = 0 0 0 = = 0 0 1 1 0 1 0
–   Abrok 5.02561+17
−17		(−23)15.5 − 8.5
(+13−6=5)
64.6%
15.5 / 24
96.8%
+83
57.0%
1788
0.62
1020
1 1 1 1 = 1 1 1 = 0 = = = 1 0 1 1 0 0 0 1 1 0 1
–   Amyan 1.5972552+17
−17		(−32)12.5 − 14.5
(+9−11=7)
46.3%
12.5 / 27
99.6%
−53
58.7%
1941
0.58
1139
1 = 0 0 = = 0 1 0 0 0 0 0 = 1 0 0 = 1 1 1 1 = 1 0 1 =
–   Matacz 1.3 HT74 5-men-egbb2551+18
−18		(−33)11.5 − 11.5
(+8−8=7)
50.0%
11.5 / 23
99.6%
−30
58.2%
1588
0.70
924
0 = = 0 1 = = 1 = 1 0 = 1 0 1 1 0 0 1 0 0 = 1
–   SpiderChess 0706032546+17
−17		(−38)12 − 15
(+7−10=10)
44.4%
12.0 / 27
99.9%
−75
50.4%
1872
0.56
944
= = 0 0 = 1 0 = 1 1 = 0 1 1 0 0 1 0 0 = = = = 1 0 0 =
–   Quark 2.352536+16
−16		(−48)14.5 − 13.5
(+11−10=7)
51.8%
14.5 / 28
100.0%
−36
57.1%
1981
0.70
1131
1 0 = 0 1 1 0 1 1 0 0 1 0 = 1 = = 0 = 0 = 1 1 1 0 = 1 0
–   Gaia 3.5 64-bit2536+17
−17		(−48)18.5 − 13.5
(+16−11=5)
57.8%
18.5 / 32
100.0%
+11
56.6%
2641
0.74
1495
1 1 1 = 0 1 0 0 1 0 1 = 0 0 1 = 1 1 = 1 1 0 1 1 1 0 = 0 1 0 1 0
–   King of Kings 2.562536+18
−18		(−48)17 − 13
(+12−8=10)
56.7%
17.0 / 30
100.0%
−5
52.9%
1805
0.90
954
1 0 = 1 = 0 = 1 1 1 = = 1 1 0 = 1 = = 0 1 = 1 0 = 0 1 0 0 1
–   LambChop 10.992531+17
−17		(−53)18 − 6
(+16−4=4)
75.0%
18.0 / 24
100.0%
+142
56.5%
2013
0.68
1138
= 1 1 1 1 1 0 1 1 0 1 1 = 0 0 1 1 1 = 1 1 = 1 1
–   Dragon 4.62524+16
−16		(−60)15 − 11
(+11−7=8)
57.7%
15.0 / 26
100.0%
−4
56.3%
2023
0.61
1138
= 1 1 0 1 1 1 = 1 1 = = 0 0 = 0 0 1 = 1 0 = 1 = 1 0
–   Nejmet 3.072521+16
−16		(−63)12.5 − 12.5
(+8−8=9)
50.0%
12.5 / 25
100.0%
−61
57.0%
1299
0.81
740
= = = = 1 = 1 1 0 0 = 1 1 0 0 1 = 0 0 = 1 1 = 0 0
–   Snitch 1.6.2 32-bit2521+15
−15		(−63)17 − 6
(+14−3=6)
73.9%
17.0 / 23
100.0%
+108
56.1%
1535
0.70
861
1 1 1 = = = = 1 0 1 1 1 1 = = 1 1 0 0 1 1 1 1
–   RomiChess P3k 64-bit2502+18
−18		(−82)24 − 8
(+21−5=6)
75.0%
24.0 / 32
100.0%
+110
61.7%
2543
0.60
1568
1 1 = 1 1 1 = 1 1 1 = 1 1 = 1 = 1 0 1 0 1 1 1 1 1 0 0 = 1 1 1 0
–   Amy 0.8.7b DC2500+17
−17		(−84)14 − 13
(+10−9=8)
51.9%
14.0 / 27
100.0%
−73
53.5%
2357
0.75
1260
0 1 0 = = 0 0 1 = 0 1 = 1 = = = 1 1 1 = 1 0 0 1 0 0 1
–   KnightDreamer 3.32499+16
−16		(−85)20.5 − 6.5
(+17−3=7)
75.9%
20.5 / 27
100.0%
+103
55.9%
2068
0.63
1156
1 1 1 1 1 = = = 1 1 1 1 = 0 1 = 1 1 1 0 1 1 = 1 = 1 0
–   Francesca MAD 0.13 Nobook2493+19
−19		(−91)10 − 7
(+8−5=4)		58.8%
10.0 / 17
100.0%
−26
61.6%
1253
0.64
772
1 0 0 1 = 1 0 1 = 0 1 1 = = 1 0 1
–   Leila 0.53h2490+17
−17		(−94)17 − 7
(+16−6=2)
70.8%
17.0 / 24
100.0%
+81
51.7%
2397
1.13
1239
1 0 0 1 0 0 1 1 1 = 1 1 1 1 1 1 1 1 1 0 1 = 0 1
–   Djinn 0.925x2479+16
−16		(−105)15 − 11
(+11−7=8)
57.7%
15.0 / 26
100.0%
−51
51.0%
1939
0.66
988
0 = 1 1 = = = 1 = 1 1 1 0 1 0 0 0 0 0 = 1 = 1 = 1 1
–   Comet B682478+14
−14		(−106)18.5 − 6.5
(+15−3=7)
74.0%
18.5 / 25
100.0%
+61
55.8%
1396
0.71
779
= = 0 1 1 1 1 1 = 1 1 = 1 = 0 1 1 = 1 = 1 0 1 1 1
–   Sjeng 12.132475+14
−14		(−109)15.5 − 8.5
(+12−5=7)
64.6%
15.5 / 24
100.0%
−4
56.3%
1469
0.62
827
= 1 1 1 1 1 0 0 1 = 1 = = 1 1 0 1 = 0 = 0 1 1 =
–   Muse 0.899b2474+16
−16		(−110)19.5 − 6.5
(+15−2=9)
75.0%
19.5 / 26
100.0%
+62
54.9%
1542
0.75
846
1 1 = = = = 1 = 1 1 1 1 1 0 1 1 = 1 1 0 1 = = 1 1 =
1181 games in total: 446 wins, 429 losses, 306 draws (25.9%), score: 50.7%
Average opponent: −5.2 (2578.8), average distance to opponent: 57.2

Performance

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

Perf = C − 0.278 [±0.285] * 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