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
SOS 5.1 UCI#20  (2697+18
−18		)Quote
Author: Rudolf Huber (Germany) Released: 2005-02-23Link: Arena
This engine is stable and runs without issues.
This is the only SOS version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Fruit 2.3 32-bit2888+23
−23		(+191)4.5 − 19.5
(+2−17=5)
18.8%
4.5 / 24
0.0%
−46
56.1%
1957
0.47
1097
1 0 = 0 0 0 1 0 0 0 0 0 = 0 0 = 0 0 = 0 0 0 0 =
–   Spike 1.2 Turin2842+23
−23		(+145)10.5 − 21.5
(+4−15=13)
32.8%
10.5 / 32
0.0%
+37
59.0%
1784
0.69
1052
0 = 0 = = 0 = = = = 0 = 0 0 = 0 1 0 = 0 0 0 = 0 0 0 1 1 1 = 0 =
–   Glaurung 2.0.1 64-bit2838+23
−23		(+141)8.5 − 17.5
(+5−14=7)
32.7%
8.5 / 26
0.0%
+19
57.7%
1507
0.85
869
0 0 = 0 0 = 1 0 = = 0 0 0 = 0 1 1 = = 0 0 1 0 1 0 0
–   Frenzee Feb08 64-bit2810+24
−24		(+113)10 − 22
(+6−18=8)
31.3%
10.0 / 32
0.0%
−20
54.7%
2068
1.02
1131
1 0 0 0 0 0 1 0 1 0 0 = 0 0 = = = 0 1 = = 1 1 0 = 0 0 0 0 0 = 0
–   Delfi 5.42801+24
−24		(+104)11.5 − 20.5
(+5−14=13)
35.9%
11.5 / 32
0.0%
+15
57.9%
1877
0.56
1086
0 1 1 0 0 = 1 = = = 0 1 0 0 0 = = = 0 1 = 0 = = 0 = = 0 0 0 0 =
–   Naum 2.0 64-bit2793+21
−21		(+96)11 − 21
(+6−16=10)
34.4%
11.0 / 32
0.0%
−9
52.9%
2060
0.81
1089
1 1 = 0 0 0 0 0 = 0 0 0 0 1 0 = = 0 0 1 0 = = 0 1 = 0 = 0 1 = =
–   Bright 0.2c2786+23
−23		(+89)10 − 13
(+6−9=8)
43.5%
10.0 / 23
0.0%
+47
57.3%
1470
0.79
842
1 1 = 0 0 = 1 0 1 0 0 = 0 1 0 = 0 = = = 0 1 =
–   Glaurung 1.2.1 64-bit2770+24
−24		(+73)14 − 18
(+10−14=8)
43.8%
14.0 / 32
0.0%
+28
57.2%
2479
0.74
1419
1 = = 0 0 1 1 1 0 0 1 = 0 = 1 0 1 0 = 0 1 0 = 0 0 0 1 1 0 = = 0
–   Alaric 7072768+22
−22		(+71)13 − 16
(+10−13=6)
44.8%
13.0 / 29
0.0%
+33
53.8%
2130
0.66
1146
1 0 0 1 0 0 = 0 1 0 0 1 = = 1 0 0 0 1 = = 1 1 1 0 0 = 0 1
–   Scorpio 2.0 32-bit2754+23
−23		(+57)11 − 16
(+6−11=10)
40.7%
11.0 / 27
0.0%
0
56.1%
1881
0.98
1056
= = = 1 1 = 0 0 = 0 0 0 1 0 0 = 0 0 = 0 = = 1 0 1 1 =
–   Scorpio 1.912739+26
−26		(+42)11.5 − 13.5
(+8−10=7)
46.0%
11.5 / 25
0.2%
+13
57.3%
1987
0.79
1138
0 0 = 1 = 1 0 1 0 1 = 0 = = 1 1 0 1 0 = 0 = 0 0 1
–   E.T. Chess 13.01.082733+21
−21		(+36)12 − 16
(+8−12=8)
42.9%
12.0 / 28
0.2%
−12
57.9%
1832
0.62
1061
0 0 1 0 1 0 = 1 = 0 0 = = 0 1 0 0 0 = 1 = 1 1 0 = = 1 0
–   WildCat 82730+22
−22		(+33)14.5 − 17.5
(+10−13=9)
45.3%
14.5 / 32
0.4%
+3
54.4%
2081
0.63
1133
0 0 = = 0 1 = 1 = = 0 1 0 1 = 0 = 1 = 1 = 0 0 1 1 1 1 0 0 0 0 0
–   Alfil 8.1.1 Optimized2723+21
−21		(+26)10.5 − 17.5
(+7−14=7)
37.5%
10.5 / 28
1.7%
−60
56.9%
1765
0.77
1005
= 0 0 1 0 = = 0 = 1 0 0 = 1 0 1 0 0 1 0 0 1 1 0 = 0 = 0
–   Movei 00.8.438 (10-10-10)2722+21
−21		(+25)13 − 14
(+8−9=10)
48.1%
13.0 / 27
2.0%
+16
55.4%
1682
0.62
931
1 1 = 1 0 0 = 0 1 = 0 0 = = 1 0 = 0 0 = = = 1 0 = 1 1
–   Pro Deo 1.62719+22
−22		(+22)14.5 − 12.5
(+10−8=9)
53.7%
14.5 / 27
4.1%
+47
56.4%
1389
0.75
783
0 1 = 0 0 1 0 = 0 = 1 = 1 = = 1 = 1 0 0 1 0 = = 1 1 1
–   Delfi 5.22718+21
−21		(+21)9 − 14
(+7−12=4)
39.1%
9.0 / 23
4.2%
−62
55.9%
1664
0.59
931
0 0 0 0 0 0 = 0 1 0 1 = 1 0 1 1 1 0 1 0 = 0 =
–   WildCat 72718+19
−19		(+21)10 − 13
(+9−12=2)
43.5%
10.0 / 23
3.4%
−32
60.2%
2070
0.59
1247
= 0 = 1 1 0 0 0 1 1 0 1 0 1 1 1 0 0 0 0 0 0 1
–   Zappa 1.1 64-bit2717+19
−19		(+20)19.5 − 12.5
(+15−8=9)
60.9%
19.5 / 32
3.6%
+96
60.1%
2233
0.64
1342
= 0 0 1 1 = 1 = 1 1 0 1 = 1 = 1 1 = 0 1 0 0 0 = 1 1 1 1 0 = = 1
–   Slow Chess Blitz WV2.12716+19
−19		(+19)13.5 − 8.5
(+10−5=7)
61.4%
13.5 / 22
5.3%
+92
59.5%
1532
0.64
912
0 1 1 = 1 = = 1 = 1 1 1 1 0 = 1 = 0 0 0 1 =
–   Alaric 7042713+26
−26		(+16)10.5 − 21.5
(+5−16=11)
32.8%
10.5 / 32
13.8%
−97
56.7%
2210
0.73
1253
0 = = = = 0 = = 0 0 0 0 0 1 1 0 1 1 = = 0 0 = 0 0 0 0 0 = 0 1 =
–   Frenzee 3.0 64-bit2711+19
−19		(+14)8.5 − 15.5
(+6−13=5)
35.4%
8.5 / 24
11.2%
−94
55.3%
1914
0.72
1058
= 0 0 0 0 0 0 0 1 0 1 1 0 1 = = 0 = 0 0 1 = 1 0
–   Colossus 2007d2707+20
−20		(+10)12 − 11
(+8−7=8)
52.2%
12.0 / 23
19.4%
+26
55.9%
1525
0.64
852
0 = 0 0 0 1 0 1 0 1 = = = 1 1 1 0 = = = 1 1 =
–   Pharaon 3.5.12704+19
−19		(+7)12.5 − 18.5
(+9−15=7)
40.3%
12.5 / 31
25.9%
−62
61.8%
2346
0.81
1450
0 0 0 = = 0 1 1 0 1 0 0 0 = 0 1 1 1 = = 0 = 1 0 1 1 0 0 = 0 0
–   List 5.122699+18
−18		(+2)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
43.1%
+12
55.5%
2553
0.78
1416
1 0 = 0 1 1 0 = = 1 1 = 0 1 1 0 1 1 = = 0 0 0 0 = 1 1 0 0 1 1 0
–   Colossus 2007c2694+19
−19		(−3)15.5 − 14.5
(+10−9=11)
51.7%
15.5 / 30
59.6%
+10
59.0%
1711
0.65
1009
0 = 0 0 = 1 1 1 = 1 0 1 0 = 1 = 1 = = = 0 1 0 = 0 = = 1 0 1
–   Ruffian 1.0.52687+17
−17		(−10)16.5 − 15.5
(+11−10=11)
51.6%
16.5 / 32
79.6%
+1
57.4%
2035
0.64
1169
= 1 = = = 1 1 0 0 1 0 1 0 = 0 1 = = 0 1 = 0 1 1 0 = = 1 0 1 = 0
–   Petir 4.392682+18
−18		(−15)13 − 12
(+8−7=10)
52.0%
13.0 / 25
90.4%
0
60.2%
1171
0.76
705
1 0 = 0 0 = 1 1 = 0 0 0 = = = 1 1 = = 1 1 1 0 = =
–   Pseudo 0.7c2680+18
−18		(−17)9.5 − 14.5
(+6−11=7)
39.6%
9.5 / 24
92.8%
−90
59.6%
1729
0.64
1030
1 0 1 = 0 1 = 0 = = 1 1 1 0 = = 0 0 0 0 = 0 0 0
–   Aristarch 4.502671+18
−18		(−26)19.5 − 12.5
(+14−7=11)
60.9%
19.5 / 32
98.9%
+45
54.3%
1778
0.87
966
= 0 0 = = 1 1 = = = 1 = 0 1 1 1 1 1 0 0 0 1 = = 1 1 0 = = 1 1 1
–   Petir 4.9999992670+19
−19		(−27)12 − 14
(+7−9=10)
46.2%
12.0 / 26
98.9%
−46
58.6%
1534
0.73
899
0 1 1 0 0 = 0 0 0 = 1 0 = 0 1 = = = 0 1 = = = = 1 1
–   Hamsters 0.62669+18
−18		(−28)14.5 − 10.5
(+11−7=7)
58.0%
14.5 / 25
99.0%
+23
55.6%
1909
0.80
1061
= 1 0 1 1 = = 0 1 1 1 1 0 = 0 = 0 0 1 1 1 0 = = 1
–   The Baron 2.23 64-bit2669+19
−19		(−28)22.5 − 9.5
(+18−5=9)
70.3%
22.5 / 32
99.0%
+114
57.3%
1872
0.61
1072
0 1 1 0 1 1 1 = 1 1 1 1 1 1 0 1 1 0 = = = 1 = = 0 = 1 = 1 1 = 1
–   Booot 4.13.12668+18
−18		(−29)17.5 − 12.5
(+14−9=7)
58.3%
17.5 / 30
99.4%
+29
57.0%
2080
0.64
1186
0 1 = 1 0 1 0 1 1 = 0 1 1 0 0 1 1 1 = 1 = 0 1 0 = 0 1 = 1 =
–   BugChess2 1.5.22661+18
−18		(−36)15.5 − 12.5
(+10−7=11)
55.4%
15.5 / 28
99.9%
0
54.5%
1575
0.76
858
1 = = 1 = 0 = 0 1 0 0 = 1 = 1 1 1 = 1 0 1 = = = 0 = 1 0
–   Jonny 2.832652+17
−17		(−45)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
100.0%
+33
55.3%
2034
0.77
1125
1 0 1 0 0 = 1 1 1 1 1 0 = 1 = 0 1 0 1 1 1 0 1 1 1 0 = = = 0 1 =
–   Crafty 21.5 64-bit PS2652+17
−17		(−45)14 − 10
(+10−6=8)
58.3%
14.0 / 24
100.0%
+15
56.3%
1691
0.87
952
1 0 0 = 0 1 1 0 0 = 0 1 1 1 = 1 1 = = = = = 1 1
–   The Baron 1.8.12651+18
−18		(−46)10.5 − 17.5
(+7−14=7)
37.5%
10.5 / 28
100.0%
−136
48.1%
2016
1.04
970
= 0 = = 0 1 0 0 0 1 = 0 0 1 1 = 1 0 1 0 1 = 0 0 0 0 0 =
–   Anaconda 2.0.12644+17
−17		(−53)14 − 14
(+10−10=8)
50.0%
14.0 / 28
100.0%
−54
59.8%
1846
0.67
1103
1 0 1 = = 1 = = 0 0 = 1 1 = 1 0 1 1 0 1 0 0 0 = 1 = 0 0
–   Movei 00.8.4032643+22
−22		(−54)11 − 14
(+9−12=4)
44.0%
11.0 / 25
100.0%
−100
58.4%
1875
0.62
1095
0 1 1 = 1 = 0 1 0 0 1 = 1 0 1 0 0 0 1 0 = 0 1 0 0
–   Fritz 5.322643+17
−17		(−54)15.5 − 10.5
(+10−5=11)
59.6%
15.5 / 26
100.0%
+1
62.1%
1405
0.79
873
= 0 1 = = 0 = 1 1 = = 0 = = = 0 1 1 0 = 1 = 1 1 1 1
–   Ktulu 4.22634+17
−17		(−63)13 − 14
(+10−11=6)
48.1%
13.0 / 27
100.0%
−73
57.1%
1791
0.77
1023
1 0 = 0 1 0 0 1 1 = 0 0 0 = = 1 = 0 = 1 0 0 1 0 1 1 1
–   Thinker 4.7a2634+17
−17		(−63)19 − 7
(+14−2=10)
73.1%
19.0 / 26
100.0%
+90
55.2%
1602
1.02
884
1 = 1 1 = = 0 1 = 1 1 1 = 1 1 = 1 1 = = 0 1 1 = = 1
–   SmarThink 0.17a2633+16
−16		(−64)16.5 − 15.5
(+12−11=9)
51.6%
16.5 / 32
100.0%
−51
54.4%
1631
0.71
888
1 0 = 0 0 = 0 1 = 0 1 1 = 0 1 1 0 = 1 = 0 1 = 0 0 1 = 1 = 1 0 1
–   Ufim 8.022628+18
−18		(−69)17.5 − 9.5
(+14−6=7)
64.8%
17.5 / 27
100.0%
+36
54.9%
2047
0.84
1123
1 0 = = 1 1 0 1 1 1 1 1 1 = 1 = 1 0 1 0 1 = = 0 1 0 =
–   Fritz 6 Light2627+19
−19		(−70)14.5 − 7.5
(+12−5=5)
65.9%
14.5 / 22
100.0%
+45
62.0%
1601
1.05
993
0 0 1 = 0 1 = 1 1 1 = 1 1 1 1 1 1 0 = 0 = 1
–   Trace 1.37a2622+17
−17		(−75)14 − 11
(+11−8=6)
56.0%
14.0 / 25
100.0%
−35
56.5%
1665
0.69
941
0 0 = 1 0 1 0 1 1 0 1 = 1 = 0 1 1 = 0 = 1 0 1 = 1
–   AnMon 5.602621+18
−18		(−76)13.5 − 10.5
(+12−9=3)
56.3%
13.5 / 24
100.0%
−24
57.2%
1843
0.66
1054
1 1 1 1 1 1 = = 0 0 0 0 0 1 = 1 0 1 1 1 0 0 1 0
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17		(−83)15.5 − 9.5
(+11−5=9)
62.0%
15.5 / 25
100.0%
−1
54.3%
1218
0.63
661
= = = = 1 = 1 = 0 1 = 1 = 1 0 1 1 1 1 1 1 0 0 = 0
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19		(−90)19 − 6
(+16−3=6)
76.0%
19.0 / 25
100.0%
+96
52.6%
1596
0.62
839
0 = 1 = 0 1 1 1 1 = 1 1 0 1 = 1 1 1 = 1 = 1 1 1 1
1378 games in total: 476 wins, 504 losses, 398 draws (28.9%), score: 49.0%
Average opponent: +6.0 (2703), average distance to opponent: 51.1

Performance

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

Perf = C + 0.034 [±0.240] * 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