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

Options
Show each game results
King of Kings 2.56 WB#52–54  (2536+18
−18		)Quote
Author: Koundinya Veluri (Canada) Released: 2004-05-13Links: WBEC, Download at RWBC
This engine is stable and runs without issues.
This is the only King of Kings version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Anaconda 2.0.12644+17
−17		(+108)7.5 − 20.5
(+4−17=7)
26.8%
7.5 / 28
0.0%
−59
59.6%
1969
0.63
1174
1 0 0 0 0 = 0 0 0 = 1 = = = 0 0 0 1 0 0 1 0 = 0 0 0 0 =
–   Ktulu 4.22634+17
−17		(+98)5 − 23
(+3−21=4)
17.9%
5.0 / 28
0.0%
−165
54.0%
2251
0.88
1216
0 1 0 0 1 0 0 0 0 0 = 0 = 0 = = 0 0 0 0 1 0 0 0 0 0 0 0
–   Thinker 4.7a2634+17
−17		(+98)10.5 − 11.5
(+6−7=9)
47.7%
10.5 / 22
0.0%
+85
56.5%
1392
0.94
786
= 0 0 = = 1 0 = 0 1 = = 0 = 0 = 1 1 1 1 = 0
–   SmarThink 0.17a2633+16
−16		(+97)13.5 − 10.5
(+11−8=5)
56.3%
13.5 / 24
0.0%
+146
51.1%
1730
0.77
884
1 = = 0 1 1 0 = 0 = 1 0 0 1 1 0 0 = 1 1 0 1 1 1
–   Ufim 8.022628+18
−18		(+92)9.5 − 15.5
(+5−11=9)
38.0%
9.5 / 25
0.0%
+16
55.3%
1397
0.67
773
= = 0 = 0 1 0 0 0 = 1 1 0 0 0 1 0 = = = 0 0 1 = =
–   Trace 1.37a2622+17
−17		(+86)8.5 − 16.5
(+6−14=5)
34.0%
8.5 / 25
0.0%
−33
58.7%
1735
0.68
1018
0 0 1 0 = = 0 1 0 0 = 0 0 1 0 = = 1 0 0 1 1 0 0 0
–   AnMon 5.602621+18
−18		(+85)7 − 20
(+5−18=4)
25.9%
7.0 / 27
0.0%
−101
55.5%
2234
0.63
1240
1 0 0 0 1 = 0 1 0 1 = 0 0 0 0 0 0 = 0 1 0 = 0 0 0 0 0
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17		(+78)11 − 19
(+8−16=6)
36.7%
11.0 / 30
0.0%
−20
54.9%
2320
0.93
1273
= 0 0 = 1 0 1 1 0 0 0 1 0 = 0 1 0 0 0 = 0 1 1 = = 0 0 0 0 1
–   Yace 0.99.872609+17
−17		(+73)10.5 − 16.5
(+6−12=9)
38.9%
10.5 / 27
0.0%
0
55.6%
1929
0.65
1073
0 = = = = 1 = 0 = 0 0 0 0 1 = 0 1 0 0 = 0 0 1 1 0 1 =
–   Pepito 1.59 32-bit2595+19
−19		(+59)12 − 19
(+8−15=8)
38.7%
12.0 / 31
0.0%
−19
56.4%
2178
0.61
1228
= = 1 0 0 1 = 0 = = 0 = 0 0 1 0 0 0 0 0 0 0 1 1 = 0 1 0 1 = 1
–   Bruja 1.9 64-bit JA No-int-book2584+18
−18		(+48)13 − 17
(+8−12=10)
43.3%
13.0 / 30
0.0%
+5
52.9%
1805
0.90
954
0 1 = 0 = 1 = 0 0 0 = = 0 0 1 = 0 = = 1 0 = 0 1 = 1 0 1 1 0
–   Green Light Chess 3.002582+17
−17		(+46)9.5 − 16.5
(+6−13=7)
36.5%
9.5 / 26
0.0%
−46
57.3%
1614
0.62
925
1 0 1 0 = 0 = = 0 0 1 1 = 0 = 0 = 1 0 0 1 0 0 = 0 0
–   Tao 5.62574+17
−17		(+38)10 − 16
(+8−14=4)
38.5%
10.0 / 26
0.1%
−49
55.6%
2243
0.70
1247
0 0 0 0 0 1 1 = 1 1 = 0 0 0 = 0 1 1 = 0 1 0 0 1 0 0
–   Cerebro 3.03d2572+19
−19		(+36)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
0.3%
+47
51.9%
2376
0.96
1233
= 0 1 1 0 0 1 = 1 1 0 = 0 1 0 1 = 1 0 = = 1 0 0 0 1 1 0 = 0 1 1
–   Twisted Logic 20080404x2568+18
−18		(+32)13 − 11
(+10−8=6)
54.2%
13.0 / 24
0.5%
+61
51.7%
1743
0.70
902
= = 0 1 0 1 0 1 = 1 0 = 0 1 1 1 1 = 1 0 = 0 1 0
–   Arasan 10.0 64-bit2564+17
−17		(+28)12.5 − 12.5
(+9−9=7)
50.0%
12.5 / 25
1.1%
+30
53.5%
1811
0.68
968
= 1 0 = 1 0 1 0 1 0 0 1 1 0 = 1 = = = 0 0 1 = 0 1
–   Abrok 5.02561+17
−17		(+25)16 − 12
(+12−8=8)
57.1%
16.0 / 28
1.7%
+73
58.2%
1914
0.75
1114
1 0 = 1 = 1 0 1 = 1 0 1 1 = = 0 1 0 = 1 = 1 1 1 0 = 0 0
–   Amyan 1.5972552+17
−17		(+16)12.5 − 14.5
(+6−8=13)
46.3%
12.5 / 27
8.7%
−10
57.3%
1209
0.75
693
1 = 0 = 1 1 0 0 0 = = = = = = 1 = = 0 0 = 1 0 = 1 = 0
–   Matacz 1.3 HT74 5-men-egbb2551+18
−18		(+15)12 − 16
(+9−13=6)
42.9%
12.0 / 28
11.9%
−37
56.8%
2148
0.69
1221
1 0 0 1 0 = 0 1 1 0 = = 1 0 1 0 0 = = 1 0 0 0 1 0 0 = 1
–   SpiderChess 0706032546+17
−17		(+10)10.5 − 16.5
(+6−12=9)
38.9%
10.5 / 27
19.5%
−66
54.3%
1670
0.69
907
0 0 1 0 1 = = 0 = 1 = 0 = 1 0 0 = 0 1 0 = 0 = = 1 0 0
–   Quark 2.352536+16
−16		(0)10.5 − 16.5
(+9−15=3)
38.9%
10.5 / 27
51.2%
−90
53.1%
2157
0.82
1146
0 1 0 = 0 0 0 0 1 0 1 0 1 0 1 0 0 0 1 0 1 0 0 1 = 1 =
–   Gaia 3.5 64-bit2536+17
−17		(0)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
50.7%
+10
53.4%
2592
1.04
1383
1 0 0 0 0 1 1 0 1 1 1 = 1 = 1 1 0 1 = 1 1 0 = 0 0 = = = 0 0 0 1
–   LambChop 10.992531+17
−17		(−5)16 − 9
(+12−5=8)
64.0%
16.0 / 25
67.9%
+91
54.9%
1725
0.53
947
0 1 0 0 1 = = 1 1 = 1 0 = = 1 1 1 = 1 1 1 = 0 1 =
–   Dragon 4.62524+16
−16		(−12)14 − 11
(+11−8=6)
56.0%
14.0 / 25
85.0%
+29
54.6%
1601
0.88
874
= = 1 1 1 1 1 0 0 = 1 0 0 = 0 0 1 1 0 1 1 = 0 1 =
–   Nejmet 3.072521+16
−16		(−15)17.5 − 9.5
(+16−8=3)
64.8%
17.5 / 27
90.7%
+106
53.9%
2301
0.77
1240
1 1 1 1 1 1 1 0 1 1 1 1 = 0 0 1 1 0 = 0 0 = 1 1 1 0 0
–   Snitch 1.6.2 32-bit2521+15
−15		(−15)15.5 − 11.5
(+13−9=5)
57.4%
15.5 / 27
91.4%
+39
53.7%
2156
0.67
1158
= 1 0 = 1 0 = 1 1 0 0 1 0 1 0 1 = = 0 1 1 0 1 1 1 1 0
–   RomiChess P3k 64-bit2502+18
−18		(−34)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
99.7%
−43
62.5%
2200
0.67
1374
= = 0 0 1 0 1 1 = 1 = 0 1 0 1 = = 1 0 1 1 0 0 1 0 1 0 0 0 0 = 1
–   Amy 0.8.7b DC2500+17
−17		(−36)12 − 12
(+9−9=6)
50.0%
12.0 / 24
99.9%
−33
53.4%
1817
0.79
970
0 = = 1 1 1 1 1 1 1 1 = 0 0 1 = = = 0 0 0 0 0 0
–   KnightDreamer 3.32499+16
−16		(−37)14.5 − 9.5
(+12−7=5)
60.4%
14.5 / 24
99.9%
+39
57.5%
1494
0.95
859
= 0 1 = = 0 1 = 0 1 = 1 1 1 0 1 1 0 0 1 1 1 0 1
–   Francesca MAD 0.13 Nobook2493+19
−19		(−43)12 − 6
(+12−6=0)		66.7%
12.0 / 18
100.0%
+101
63.7%
1489
0.90
948
1 1 1 1 0 1 1 0 1 1 0 0 1 1 1 0 0 1
–   Leila 0.53h2490+17
−17		(−46)12.5 − 9.5
(+10−7=5)
56.8%
12.5 / 22
100.0%
+6
54.3%
1705
0.87
926
0 1 0 1 = 1 0 0 1 0 0 1 = = 1 0 = 1 1 1 1 =
–   Diablo 0.5.1 JA2482+16
−16		(−54)18 − 14
(+13−9=10)
56.3%
18.0 / 32
100.0%
−13
57.8%
2276
0.65
1315
0 = = = 0 = = 1 0 1 1 = = = 1 0 1 1 1 0 1 = = 1 0 1 0 0 1 1 0 1
–   PostModernist 10162480+16
−16		(−56)19.5 − 12.5
(+17−10=5)
60.9%
19.5 / 32
100.0%
+25
58.4%
2227
0.74
1300
1 1 1 1 0 1 1 0 0 = 0 = 0 1 = 1 1 = 1 1 0 1 1 0 1 0 1 1 0 1 0 =
–   Djinn 0.925x2479+16
−16		(−57)14.5 − 13.5
(+11−10=7)
51.8%
14.5 / 28
100.0%
−43
52.0%
2149
0.89
1118
1 1 0 0 0 1 = 1 1 0 1 1 0 = 0 0 = = 0 1 = 1 = = 0 1 0 1
–   Comet B682478+14
−14		(−58)18 − 12
(+14−8=8)
60.0%
18.0 / 30
100.0%
+13
56.2%
1946
0.79
1093
1 = 1 = 1 = = 1 1 1 1 0 0 1 = 0 = 1 = 0 1 1 = 0 1 0 0 0 1 1
–   Sjeng 12.132475+14
−14		(−61)18 − 8
(+16−6=4)
69.2%
18.0 / 26
100.0%
+87
55.8%
1735
0.76
968
= 1 0 1 = 1 1 0 1 0 1 1 1 1 = 0 1 1 1 1 1 1 1 0 = 0
–   Muse 0.899b2474+16
−16		(−62)16 − 8
(+12−4=8)
66.7%
16.0 / 24
100.0%
+44
49.5%
1522
0.78
753
1 0 1 1 = = 1 0 1 1 1 = 1 = 0 = 0 1 1 = = 1 1 =
–   Queen 4.032466+17
−17		(−70)16 − 16
(+12−12=8)
50.0%
16.0 / 32
100.0%
−70
55.0%
2593
0.56
1426
1 1 1 0 0 1 0 = 0 0 1 = 1 0 1 1 1 0 = 1 0 0 = 1 = = = 1 0 0 0 =
–   The Crazy Bishop 00522460+15
−15		(−76)16.5 − 8.5
(+15−7=3)
66.0%
16.5 / 25
100.0%
+52
54.5%
1980
0.79
1080
0 1 1 1 0 1 1 1 1 0 1 0 = 1 1 0 = = 1 1 1 0 1 1 0
–   Patzer 3.802460+16
−16		(−76)17.5 − 14.5
(+15−12=5)
54.7%
17.5 / 32
100.0%
−39
52.6%
2332
0.96
1226
0 0 0 0 = 1 1 1 0 1 = 1 1 1 0 1 1 0 1 0 = = 0 0 1 0 1 1 1 0 1 =
–   Der Bringer 1.92455+15
−15		(−81)13 − 13
(+10−10=6)
50.0%
13.0 / 26
100.0%
−86
56.0%
2243
0.71
1257
1 1 = 0 = 1 1 0 0 1 = 1 0 = 0 1 0 = 0 0 0 1 = 1 1 0
–   Phalanx XXII Reborn JA2452+15
−15		(−84)13.5 − 13.5
(+12−12=3)
50.0%
13.5 / 27
100.0%
−81
54.5%
2253
0.82
1227
0 1 = 0 0 0 0 0 0 1 = 1 0 1 1 = 1 0 1 0 1 0 1 1 0 1 1
–   Betsy 6.51 Nobook2450+15
−15		(−86)16.5 − 11.5
(+14−9=5)
58.9%
16.5 / 28
100.0%
−19
54.5%
2182
0.80
1190
0 1 0 1 1 0 1 0 1 1 0 0 = 0 = 1 = 0 1 1 1 = 1 = 1 1 1 0
–   Amateur 2.822446+15
−15		(−90)15 − 10
(+12−7=6)
60.0%
15.0 / 25
100.0%
−19
54.3%
2021
0.80
1098
1 1 1 1 0 = 1 1 = 1 1 1 0 = 0 1 1 = = 0 = 0 1 0 0
–   Thor's Hammer 2.28 32-bit2417+15
−15		(−119)20 − 4
(+20−4=0)
83.3%
20.0 / 24
100.0%
+207
50.9%
1859
0.93
946
0 1 1 1 1 0 1 1 0 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1
1214 games in total: 471 wins, 467 losses, 276 draws (22.7%), score: 50.2%
Average opponent: −2.5 (2533.5), average distance to opponent: 53.9

Performance

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

Perf = C − 0.159 [±0.328] * 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