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
Ktulu 4.2 UCI#33–34  (2634+17
−17		)Quote
Author: Rahman Paidar (Iran) Released: 2003-12-29Link: Homepage
This engine is stable and runs without issues.
This is the only Ktulu version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   WildCat 72718+19
−19		(+84)8.5 − 18.5
(+3−13=11)
31.5%
8.5 / 27
0.0%
−30
61.2%
1524
0.50
933
0 0 0 0 = 0 0 0 = = 0 0 0 1 = = = 1 = 0 = 0 = = 0 1 =
–   Colossus 2007d2707+20
−20		(+73)8.5 − 18.5
(+5−15=7)
31.5%
8.5 / 27
0.0%
−58
58.7%
1916
0.57
1124
0 0 0 = 0 0 = 0 0 1 0 1 0 1 0 0 0 0 = 0 1 = = 0 1 = =
–   Pharaon 3.5.12704+19
−19		(+70)9.5 − 14.5
(+7−12=5)
39.6%
9.5 / 24
0.0%
−9
58.1%
1981
0.67
1151
= 0 = 1 0 0 0 = = 0 0 0 1 1 = 1 1 0 0 0 0 0 1 1
–   List 5.122699+18
−18		(+65)10.5 − 18.5
(+6−14=9)
36.2%
10.5 / 29
0.0%
−26
62.2%
2106
0.57
1310
1 = = 0 1 0 0 0 0 0 0 0 0 = 0 = 0 0 = = 0 = 1 1 1 0 = = 1
–   SOS 5.12697+18
−18		(+63)14 − 13
(+11−10=6)
51.9%
14.0 / 27
0.0%
+73
57.1%
1791
0.77
1023
0 1 = 1 0 1 1 0 0 = 1 1 1 = = 0 = 1 = 0 1 1 0 1 0 0 0
–   Colossus 2007c2694+19
−19		(+60)9.5 − 16.5
(+5−12=9)
36.5%
9.5 / 26
0.0%
−30
58.8%
1794
0.71
1055
0 1 = 0 0 = 0 0 1 = = 0 = 0 1 0 = 0 = 0 = 0 0 1 = 1
–   Ruffian 1.0.52687+17
−17		(+53)10 − 19
(+6−15=8)
34.5%
10.0 / 29
0.0%
−59
62.8%
2140
0.46
1344
0 = 1 0 0 = = 1 0 0 0 1 1 0 0 = 0 1 = 0 0 0 = 1 0 = = 0 0
–   Petir 4.392682+18
−18		(+48)11 − 15
(+7−11=8)
42.3%
11.0 / 26
0.0%
0
58.7%
1913
0.88
1122
0 0 0 1 0 0 0 = 0 0 1 0 1 = = 1 = 1 = 0 1 1 = 0 = =
–   Pseudo 0.7c2680+18
−18		(+46)10.5 − 17.5
(+7−14=7)
37.5%
10.5 / 28
0.0%
−42
60.1%
2157
0.59
1297
0 0 = 0 0 1 = 1 0 0 = 1 = = 0 0 0 1 0 1 0 = 0 1 0 0 = 1
–   Aristarch 4.502671+18
−18		(+37)11 − 13
(+7−9=8)
45.8%
11.0 / 24
0.1%
+10
59.1%
1431
0.61
846
1 1 1 1 = = = 0 = = 1 0 0 = 0 1 = 1 0 0 0 = 0 0
–   Petir 4.9999992670+19
−19		(+36)9 − 16
(+6−13=6)
36.0%
9.0 / 25
0.1%
−62
59.6%
1830
0.73
1090
= 0 = 0 1 0 0 = 0 1 0 1 0 1 = 1 = 1 0 = 0 0 0 0 0
–   Hamsters 0.62669+18
−18		(+35)14 − 13
(+11−10=6)
51.9%
14.0 / 27
0.1%
+51
60.6%
2007
0.73
1216
1 1 = 0 1 0 1 0 0 0 1 0 1 1 1 = = 0 1 1 0 = 0 1 = = 0
–   The Baron 2.23 64-bit2669+19
−19		(+35)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
0.1%
+46
58.6%
2119
0.94
1241
1 0 1 0 0 1 1 = 1 0 0 = = 1 0 0 1 0 1 0 0 = 0 1 = 1 0 = = 1 1 1
–   Booot 4.13.12668+18
−18		(+34)12.5 − 15.5
(+9−12=7)
44.6%
12.5 / 28
0.2%
−4
59.5%
2199
0.59
1308
0 1 0 0 0 0 = 0 = = 0 = 1 = 1 1 = 1 0 0 0 1 1 0 0 1 1 =
–   BugChess2 1.5.22661+18
−18		(+27)9.5 − 16.5
(+6−13=7)
36.5%
9.5 / 26
1.0%
−69
56.1%
2206
0.77
1238
0 0 = 0 0 0 0 1 1 = 0 0 1 0 = = 0 0 1 0 = = 1 0 = 1
–   Jonny 2.832652+17
−17		(+18)13 − 12
(+9−8=8)
52.0%
13.0 / 25
5.9%
+34
60.4%
1366
0.71
825
= 0 0 1 = = 1 = 0 1 1 = 1 = = 1 0 0 = 0 1 1 1 0 0
–   Crafty 21.5 64-bit PS2652+17
−17		(+18)16 − 10
(+13−7=6)
61.5%
16.0 / 26
5.1%
+105
57.3%
2040
0.71
1169
1 = = 0 = 1 1 0 1 1 = 0 0 1 0 0 1 = = 1 0 1 1 1 1 1
–   The Baron 1.8.12651+18
−18		(+17)13.5 − 15.5
(+10−12=7)
46.6%
13.5 / 29
6.9%
−7
57.1%
1877
0.99
1072
0 = = 0 0 1 1 1 1 0 = 1 = = 1 0 = 0 0 1 0 0 0 0 = 1 0 1 1
–   Anaconda 2.0.12644+17
−17		(+10)14 − 14
(+10−10=8)
50.0%
14.0 / 28
18.2%
+11
58.1%
1835
0.58
1067
0 1 0 0 0 = = 1 = 0 1 0 = 1 1 = 1 = 0 1 1 0 1 0 = 0 1 =
–   Movei 00.8.4032643+22
−22		(+9)15 − 12
(+12−9=6)
55.6%
15.0 / 27
23.4%
+51
59.3%
2129
0.70
1263
= 0 1 = 1 1 0 1 1 1 1 0 = 1 0 1 0 = 0 = 0 1 0 1 0 1 =
–   Fritz 5.322643+17
−17		(+9)12.5 − 13.5
(+9−10=7)
48.1%
12.5 / 26
20.5%
−3
63.0%
1635
1.03
1030
= 0 0 = 1 1 0 1 1 0 = 0 0 0 = = 1 0 1 = = 1 1 1 0 0
–   Thinker 4.7a2634+17
−17		(0)15.5 − 8.5
(+11−4=9)
64.6%
15.5 / 24
49.4%
+96
62.2%
1455
0.81
905
1 1 1 = = 0 1 1 1 0 = = = = 1 0 1 = 0 1 = 1 = 1
–   SmarThink 0.17a2633+16
−16		(−1)13 − 10
(+10−7=6)
56.5%
13.0 / 23
54.4%
+45
58.0%
1722
0.47
998
0 = 1 = 1 0 0 1 1 0 1 = = 1 0 0 1 = 1 = 1 0 1
–   Ufim 8.022628+18
−18		(−6)14 − 12
(+11−9=6)
53.8%
14.0 / 26
69.5%
+23
57.7%
2124
0.77
1225
1 1 0 0 = 1 0 0 0 = 0 = 1 0 1 1 = = 0 1 1 = 1 1 1 0
–   Fritz 6 Light2627+19
−19		(−7)9 − 14
(+8−13=2)
39.1%
9.0 / 23
72.3%
−97
61.2%
2079
0.83
1272
1 0 0 0 1 1 0 0 0 1 0 = 0 1 = 0 1 0 1 0 0 0 1
–   Trace 1.37a2622+17
−17		(−12)13 − 14
(+8−9=10)
48.1%
13.0 / 27
84.1%
−25
53.5%
1848
0.76
989
= 1 = = 1 0 0 1 = = = 1 0 = 0 = = 1 0 0 0 = 0 0 1 1 1
–   AnMon 5.602621+18
−18		(−13)12 − 12
(+11−11=2)
50.0%
12.0 / 24
86.8%
−11
54.2%
2067
0.64
1120
1 0 0 0 = 1 0 1 0 0 1 0 1 1 1 1 1 1 0 1 = 0 0 0
–   E.T. Chess 18.11.052620+21
−21		(−14)10.5 − 13.5
(+7−10=7)
43.8%
10.5 / 24
85.9%
−57
59.4%
1556
0.69
925
0 0 = 1 1 1 = 0 1 = = 1 0 = = 1 0 0 = 1 0 0 0 0
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17		(−20)12 − 15
(+6−9=12)
44.4%
12.0 / 27
95.6%
−52
47.0%
1637
0.82
769
1 = 0 1 0 1 = 1 = 0 = 1 = 0 = = 1 = = 0 0 0 = = 0 0 =
–   Yace 0.99.872609+17
−17		(−25)12.5 − 14.5
(+7−9=11)
46.3%
12.5 / 27
98.5%
−48
59.7%
1464
0.64
874
0 = = 1 0 1 = = 1 0 0 0 1 0 = 1 1 = 0 = = 0 = = 1 = 0
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19		(−27)10.5 − 17.5
(+6−13=9)
37.5%
10.5 / 28
98.6%
−110
52.4%
1925
0.91
1008
0 0 0 = = 1 0 1 0 0 = 0 = = = 1 0 = = 1 0 0 1 0 0 1 = 0
–   Hamsters 0.52595+21
−21		(−39)20 − 9
(+17−6=6)
69.0%
20.0 / 29
99.8%
+103
56.0%
2403
0.96
1345
= 1 1 1 = 1 = 0 = 0 0 1 1 = 1 0 1 1 0 = 1 0 1 1 1 1 1 1 1
–   Pepito 1.59 32-bit2595+19
−19		(−39)11.5 − 11.5
(+7−7=9)
50.0%
11.5 / 23
99.9%
−37
62.9%
1292
0.55
813
0 = = 0 1 1 1 = = 0 = 1 1 = = 0 0 = 1 1 0 = 0
–   Bruja 1.9 64-bit JA No-int-book2584+18
−18		(−50)11 − 11
(+8−8=6)
50.0%
11.0 / 22
100.0%
−45
57.7%
1809
0.75
1043
0 0 1 0 = 1 1 1 = = 0 1 0 0 0 = = = 0 1 1 1
–   Green Light Chess 3.002582+17
−17		(−52)12 − 11
(+9−8=6)
52.2%
12.0 / 23
100.0%
−41
62.5%
1626
0.63
1016
0 1 0 1 = 0 = = = 1 0 = 1 1 1 = 0 1 1 1 0 0 0
–   Tao 5.62574+17
−17		(−60)13.5 − 8.5
(+8−3=11)
61.4%
13.5 / 22
100.0%
+4
62.9%
1144
0.82
720
= = = = = 0 1 = 1 1 = 1 1 1 = 0 = 0 1 = = 1
–   Cerebro 3.03d2572+19
−19		(−62)18 − 14
(+12−8=12)
56.3%
18.0 / 32
100.0%
−21
59.9%
1838
0.67
1101
0 1 1 = = 0 0 0 = = 1 1 = 1 1 = 0 = = 1 = 0 1 1 0 0 = = 1 1 1 =
–   Twisted Logic 20080404x2568+18
−18		(−66)18.5 − 8.5
(+16−6=5)
68.5%
18.5 / 27
100.0%
+73
56.1%
2106
0.92
1181
0 0 1 = = 1 0 1 = 1 1 1 0 1 1 = 0 1 0 1 1 1 1 1 = 1 1
–   Arasan 10.0 64-bit2564+17
−17		(−70)19.5 − 9.5
(+16−6=7)
67.2%
19.5 / 29
100.0%
+53
60.0%
2451
0.58
1470
0 1 1 1 1 0 1 0 1 1 = 1 1 1 = 1 1 1 0 0 = = 0 1 1 1 = = =
–   Abrok 5.02561+17
−17		(−73)13 − 7
(+9−3=8)
65.0%
13.0 / 20
100.0%
+17
58.8%
1201
1.00
706
1 = 1 1 1 = 1 = = = 0 0 = 1 = 0 1 = 1 1
–   Amyan 1.5972552+17
−17		(−82)13.5 − 12.5
(+10−9=7)
51.9%
13.5 / 26
100.0%
−66
60.9%
1969
0.75
1199
0 1 0 0 = 0 = 1 1 = = 0 1 1 0 0 1 1 0 1 1 0 = 1 = =
–   Matacz 1.3 HT74 5-men-egbb2551+18
−18		(−83)17 − 9
(+13−5=8)
65.4%
17.0 / 26
100.0%
+21
57.6%
1781
0.62
1025
= = 1 = 1 1 1 = 1 = 1 1 = 1 0 1 1 1 0 1 0 1 0 0 = =
–   SpiderChess 0706032546+17
−17		(−88)15 − 8
(+11−4=8)
65.2%
15.0 / 23
100.0%
+12
52.6%
1756
0.69
924
= = 1 = = 1 1 = 1 1 0 1 = = 1 1 1 0 1 = 1 0 0
–   Quark 2.352536+16
−16		(−98)18 − 9
(+16−7=4)
66.7%
18.0 / 27
100.0%
+33
57.9%
2140
0.91
1239
0 1 = 1 = = 0 1 0 1 1 1 1 1 1 1 1 1 1 0 0 1 0 1 0 = 1
–   Gaia 3.5 64-bit2536+17
−17		(−98)20 − 12
(+15−7=10)
62.5%
20.0 / 32
100.0%
−10
60.1%
2076
1.04
1248
= 1 1 1 0 0 = = 1 1 0 = 1 1 1 0 0 = 1 = 0 1 1 = 1 = 1 1 0 = 1 =
–   King of Kings 2.562536+18
−18		(−98)23 − 5
(+21−3=4)
82.1%
23.0 / 28
100.0%
+165
54.0%
2251
0.88
1216
1 0 1 1 0 1 1 1 1 1 = 1 = 1 = = 1 1 1 1 0 1 1 1 1 1 1 1
–   LambChop 10.992531+17
−17		(−103)19.5 − 7.5
(+17−5=5)
72.2%
19.5 / 27
100.0%
+66
57.5%
2091
0.86
1203
1 = 1 0 0 0 1 1 1 1 0 1 1 1 1 1 0 1 1 = 1 = 1 = 1 = 1
–   Nejmet 3.072521+16
−16		(−113)17 − 11
(+13−7=8)
60.7%
17.0 / 28
100.0%
−35
62.6%
1956
0.65
1224
0 1 = = = 1 1 0 1 1 = 1 = = 1 = 1 0 0 1 1 = 1 0 1 0 1 0
–   Snitch 1.6.2 32-bit2521+15
−15		(−113)17.5 − 6.5
(+15−4=5)
72.9%
17.5 / 24
100.0%
+56
54.2%
1737
1.09
941
1 1 1 1 1 1 0 1 = 1 1 1 0 = = 0 1 0 1 = 1 = 1 1
–   Comet B682478+14
−14		(−156)20 − 7
(+16−3=8)
74.1%
20.0 / 27
100.0%
+14
58.2%
1558
0.69
907
1 = = = = 1 0 1 = 1 1 1 1 = 1 = = 1 1 1 1 0 1 1 1 1 0
–   Sjeng 12.132475+14
−14		(−159)20 − 10
(+14−4=12)
66.7%
20.0 / 30
100.0%
−51
60.0%
1421
0.59
853
1 0 = 1 = 1 = = 1 1 0 1 1 = 0 1 = = 0 1 = 1 = 1 1 1 = = 1 =
1344 games in total: 520 wins, 448 losses, 376 draws (28.0%), score: 52.7%
Average opponent: −19.2 (2614.8), average distance to opponent: 53.2

Performance

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

Perf = C − 0.138 [±0.248] * 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