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
LambChop 10.99 UCI#55  (2531+17
−17		)Quote
Author: Peter McKenzie (New Zealand) Released: 2003-03-05Link: Download at RWBC
This engine is stable and runs without issues.
This is the only LambChop version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   BugChess2 1.5.22661+18
−18		(+130)6 − 15
(+2−11=8)
28.6%
6.0 / 21
0.0%
−7
52.9%
1829
0.67
968
–   Jonny 2.832652+17
−17		(+121)12 − 17
(+10−15=4)
41.4%
12.0 / 29
0.0%
+53
56.6%
2445
0.51
1385
–   Anaconda 2.0.12644+17
−17		(+113)11.5 − 15.5
(+7−11=9)
42.6%
11.5 / 27
0.0%
+61
60.9%
1230
0.69
749
–   Fritz 5.322643+17
−17		(+112)7.5 − 16.5
(+5−14=5)
31.3%
7.5 / 24
0.0%
−28
60.0%
1749
0.59
1049
–   Ktulu 4.22634+17
−17		(+103)7.5 − 19.5
(+5−17=5)
27.8%
7.5 / 27
0.0%
−66
57.5%
2091
0.86
1203
–   Thinker 4.7a2634+17
−17		(+103)9.5 − 16.5
(+6−13=7)
36.5%
9.5 / 26
0.0%
+9
58.8%
2245
0.59
1321
–   SmarThink 0.17a2633+16
−16		(+102)10 − 17
(+6−13=8)
37.0%
10.0 / 27
0.0%
+12
59.1%
1631
0.71
964
–   Ufim 8.022628+18
−18		(+97)7.5 − 17.5
(+4−14=7)
30.0%
7.5 / 25
0.0%
−43
57.0%
2009
0.94
1145
–   Trace 1.37a2622+17
−17		(+91)7.5 − 14.5
(+5−12=5)
34.1%
7.5 / 22
0.0%
−24
56.4%
1572
0.97
887
–   AnMon 5.602621+18
−18		(+90)6 − 17
(+4−15=4)
26.1%
6.0 / 23
0.0%
−94
58.4%
1647
0.44
962
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17		(+83)13 − 13
(+11−11=4)
50.0%
13.0 / 26
0.0%
+84
55.3%
2232
0.79
1234
–   Yace 0.99.872609+17
−17		(+78)7 − 17
(+3−13=8)
29.2%
7.0 / 24
0.0%
−59
60.5%
1579
0.47
955
–   Pepito 1.59 32-bit2595+19
−19		(+64)10 − 14
(+4−8=12)
41.7%
10.0 / 24
0.0%
+11
55.9%
1144
0.50
640
–   Bruja 1.9 64-bit JA No-int-book2584+18
−18		(+53)6 − 18
(+4−16=4)
25.0%
6.0 / 24
0.0%
−142
56.5%
2013
0.68
1138
–   Green Light Chess 3.002582+17
−17		(+51)12 − 14
(+8−10=8)
46.2%
12.0 / 26
0.0%
+22
58.8%
1906
0.48
1120
–   Tao 5.62574+17
−17		(+43)13 − 16
(+9−12=8)
44.8%
13.0 / 29
0.0%
+5
59.7%
2003
0.67
1195
–   Cerebro 3.03d2572+19
−19		(+41)12.5 − 19.5
(+9−16=7)
39.1%
12.5 / 32
0.0%
−38
57.2%
1980
0.77
1132
–   Twisted Logic 20080404x2568+18
−18		(+37)8.5 − 18.5
(+5−15=7)
31.5%
8.5 / 27
0.1%
−93
54.6%
2224
0.61
1214
–   Arasan 10.0 64-bit2564+17
−17		(+33)11 − 9
(+8−6=6)
55.0%
11.0 / 20
0.2%
+63
55.7%
1211
0.56
675
–   Abrok 5.02561+17
−17		(+30)13.5 − 13.5
(+7−7=13)
50.0%
13.5 / 27
0.4%
+32
58.5%
1425
0.64
834
–   Amyan 1.5972552+17
−17		(+21)12.5 − 15.5
(+7−10=11)
44.6%
12.5 / 28
3.1%
−11
60.8%
1531
1.11
931
–   Matacz 1.3 HT74 5-men-egbb2551+18
−18		(+20)13.5 − 12.5
(+9−8=9)
51.9%
13.5 / 26
4.8%
+31
62.6%
1504
0.54
942
–   SpiderChess 0706032546+17
−17		(+15)11.5 − 14.5
(+5−8=13)
44.2%
11.5 / 26
8.6%
−17
53.9%
1396
0.70
752
–   Quark 2.352536+16
−16		(+5)13.5 − 8.5
(+11−6=5)
61.4%
13.5 / 22
32.6%
+88
57.8%
1644
0.55
950
–   Gaia 3.5 64-bit2536+17
−17		(+5)19 − 13
(+16−10=6)
59.4%
19.0 / 32
32.3%
+74
52.5%
3312
0.91
1740
–   King of Kings 2.562536+18
−18		(+5)9 − 16
(+5−12=8)
36.0%
9.0 / 25
32.1%
−91
54.9%
1725
0.53
947
–   Dragon 4.62524+16
−16		(−7)12 − 16
(+9−13=6)
42.9%
12.0 / 28
71.8%
−58
58.9%
2360
0.47
1391
–   Nejmet 3.072521+16
−16		(−10)18 − 9
(+14−5=8)
66.7%
18.0 / 27
80.5%
+101
56.0%
1926
0.58
1078
–   Snitch 1.6.2 32-bit2521+15
−15		(−10)13 − 11
(+9−7=8)
54.2%
13.0 / 24
81.7%
+13
57.4%
1439
0.69
826
–   RomiChess P3k 64-bit2502+18
−18		(−29)16.5 − 15.5
(+14−13=5)
51.6%
16.5 / 32
99.1%
−16
64.2%
2519
0.59
1618
–   Amy 0.8.7b DC2500+17
−17		(−31)16 − 8
(+13−5=6)
66.7%
16.0 / 24
99.6%
+89
58.6%
1778
0.82
1042
–   KnightDreamer 3.32499+16
−16		(−32)10 − 13
(+6−9=8)
43.5%
10.0 / 23
99.7%
−71
58.9%
1439
0.58
848
–   Francesca MAD 0.13 Nobook2493+19
−19		(−38)16.5 − 7.5
(+14−5=5)
68.8%
16.5 / 24
99.9%
+101
64.2%
1909
0.60
1226
–   Leila 0.53h2490+17
−17		(−41)13 − 8
(+10−5=6)
61.9%
13.0 / 21
100.0%
+39
57.0%
1405
0.79
801
–   Diablo 0.5.1 JA2482+16
−16		(−49)19 − 13
(+16−10=6)
59.4%
19.0 / 32
100.0%
+19
63.9%
2649
0.57
1692
–   PostModernist 10162480+16
−16		(−51)15 − 17
(+12−14=6)
46.9%
15.0 / 32
100.0%
−73
62.2%
2319
0.66
1443
–   Djinn 0.925x2479+16
−16		(−52)10 − 16
(+5−11=10)
38.5%
10.0 / 26
100.0%
−127
54.2%
1801
0.51
977
–   Comet B682478+14
−14		(−53)17 − 7
(+16−6=2)
70.8%
17.0 / 24
100.0%
+123
57.4%
2289
0.67
1314
–   Sjeng 12.132475+14
−14		(−56)14 − 9
(+11−6=6)
60.9%
14.0 / 23
100.0%
+19
58.4%
1415
0.94
826
–   Muse 0.899b2474+16
−16		(−57)16.5 − 8.5
(+14−6=5)
66.0%
16.5 / 25
100.0%
+56
58.3%
1656
0.63
966
–   Queen 4.032466+17
−17		(−65)18 − 14
(+15−11=6)
56.3%
18.0 / 32
100.0%
−17
59.9%
2417
0.55
1447
–   The Crazy Bishop 00522460+15
−15		(−71)17 − 10
(+13−6=8)
63.0%
17.0 / 27
100.0%
+14
58.1%
1779
0.60
1034
–   Patzer 3.802460+16
−16		(−71)17.5 − 14.5
(+14−11=7)
54.7%
17.5 / 32
100.0%
−37
52.0%
1954
1.14
1017
–   Der Bringer 1.92455+15
−15		(−76)17 − 10
(+14−7=6)
63.0%
17.0 / 27
100.0%
+17
56.1%
1815
0.54
1018
–   Gosu 0.162455+16
−16		(−76)17.5 − 14.5
(+14−11=7)
54.7%
17.5 / 32
100.0%
−40
53.7%
3285
0.83
1765
–   Phalanx XXII Reborn JA2452+15
−15		(−79)13 − 12
(+10−9=6)
52.0%
13.0 / 25
100.0%
−64
55.4%
1920
0.63
1063
–   Betsy 6.51 Nobook2450+15
−15		(−81)17 − 8
(+14−5=6)
68.0%
17.0 / 25
100.0%
+45
60.2%
2054
0.60
1236
–   GNU Chess 5.07.9b 64-bit JA2448+16
−16		(−83)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
100.0%
−3
58.0%
2220
0.69
1288
–   Amateur 2.822446+15
−15		(−85)17 − 6
(+14−3=6)
73.9%
17.0 / 23
100.0%
+89
51.4%
1727
0.95
887
1289 games in total: 462 wins, 490 losses, 337 draws (26.1%), score: 48.9%
Average opponent: +7.0 (2538), average distance to opponent: 57.8

Performance

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

Perf = C − 0.112 [±0.265] * 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