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
Aristarch 4.50 UCI#24  (2671+18
−18		)Quote
Author: Stefan Zipproth (Germany) Released: 2004-05-10Link: Homepage
This engine is stable and runs without issues.
This is the only Aristarch version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Fruit 2.3 32-bit2888+23
−23		(+217)9 − 17
(+6−14=6)
34.6%
9.0 / 26
0.0%
+107
54.8%
1835
0.76
1005
= = 0 1 0 1 0 = 0 0 1 0 0 = 0 = 0 0 0 1 1 0 0 1 0 =
–   Spike 1.2 Turin2842+23
−23		(+171)10 − 22
(+6−18=8)
31.3%
10.0 / 32
0.0%
+37
57.6%
2139
0.66
1232
1 0 = 0 = 0 = 0 0 0 0 1 0 0 = 0 0 1 = = 0 0 1 0 0 0 0 = 1 = 0 1
–   Naum 2.0 64-bit2793+21
−21		(+122)13.5 − 18.5
(+7−12=13)
42.2%
13.5 / 32
0.0%
+73
55.5%
1655
0.68
919
0 1 1 0 = 0 = = 1 0 0 = 0 = 1 = 1 = = 1 = 0 1 = 0 = = 0 = 0 0 0
–   Naum 2.0 32-bit2777+26
−26		(+106)13.5 − 18.5
(+9−14=9)
42.2%
13.5 / 32
0.0%
+54
56.7%
2200
0.82
1247
0 = 1 0 1 0 1 0 1 = 0 = = 0 = 0 1 = = 1 1 0 0 0 1 = 0 = 0 0 1 0
–   Glaurung 1.2.1 64-bit2770+24
−24		(+99)11.5 − 20.5
(+8−17=7)
35.9%
11.5 / 32
0.0%
−3
54.3%
2263
0.85
1228
= = = 0 0 1 0 1 1 0 = 0 = = 0 0 1 1 0 0 1 0 1 0 1 0 0 = 0 0 0 0
–   Alaric 7072768+22
−22		(+97)13 − 15
(+7−9=12)
46.4%
13.0 / 28
0.0%
+73
54.5%
1222
0.84
666
= 0 = = = = 1 0 = 0 0 1 0 1 0 = = 1 = 0 1 = 0 1 0 = = 1
–   Scorpio 2.0 32-bit2754+23
−23		(+83)8.5 − 20.5
(+3−15=11)
29.3%
8.5 / 29
0.0%
−47
56.1%
1194
0.85
670
1 0 = = 0 = 0 0 0 = = 1 = = 0 0 = 0 0 0 0 = 0 0 0 0 = 1 =
–   Scorpio 1.912739+26
−26		(+68)10 − 16
(+7−13=6)
38.5%
10.0 / 26
0.0%
−14
57.6%
1654
0.75
952
0 0 1 1 = = 0 = 0 = 0 0 1 = 0 0 1 0 0 0 1 0 1 = 1 0
–   E.T. Chess 13.01.082733+21
−21		(+62)12 − 14
(+8−10=8)
46.2%
12.0 / 26
0.0%
+37
56.2%
1624
0.70
913
1 1 1 1 0 = = 1 0 0 1 = 0 = = 0 1 1 = = 0 0 0 = 0 0
–   WildCat 82730+22
−22		(+59)13.5 − 18.5
(+8−13=11)
42.2%
13.5 / 32
0.0%
+7
59.5%
1828
0.67
1088
1 = 0 = = = = 0 = 1 1 1 0 1 0 = = 0 0 0 = 0 0 0 0 = = 1 0 0 1 1
–   Alfil 8.1.1 Optimized2723+21
−21		(+52)13 − 12
(+10−9=6)
52.0%
13.0 / 25
0.0%
+64
51.2%
1811
0.73
927
0 0 0 0 = 1 1 1 = 1 = 0 0 = = = 1 1 0 0 1 1 1 0 1
–   Movei 00.8.438 (10-10-10)2722+21
−21		(+51)11 − 16
(+8−13=6)
40.7%
11.0 / 27
0.0%
−18
53.2%
1894
0.63
1007
1 1 1 0 = 0 1 1 1 0 1 0 0 = 0 0 0 0 = 0 0 0 1 = = = 0
–   Pro Deo 1.62719+22
−22		(+48)9 − 16
(+6−13=6)
36.0%
9.0 / 25
0.0%
−49
57.9%
1459
0.77
845
0 0 0 0 0 = 0 0 1 1 0 0 1 = 0 = 1 1 0 = = 0 = 1 0
–   Delfi 5.22718+21
−21		(+47)10 − 13
(+6−9=8)
43.5%
10.0 / 23
0.0%
+7
57.8%
1226
0.69
709
= 1 1 = 1 = 0 0 = 0 0 0 = 1 0 = = = 0 0 1 1 0
–   WildCat 72718+19
−19		(+47)10 − 13
(+8−11=4)
43.5%
10.0 / 23
0.0%
+3
62.3%
1335
0.67
832
0 1 1 0 1 = = 0 = 1 1 0 0 0 0 0 0 1 = 0 0 1 1
–   Zappa 1.1 64-bit2717+19
−19		(+46)13.5 − 18.5
(+9−14=9)
42.2%
13.5 / 32
0.0%
−6
55.9%
1698
0.67
950
1 1 = 0 = 0 = = = 1 0 1 0 0 1 0 0 0 1 0 0 = 0 0 = 0 1 0 = = 1 1
–   Slow Chess Blitz WV2.12716+19
−19		(+45)11 − 21
(+5−15=12)
34.4%
11.0 / 32
0.0%
−55
55.5%
1661
0.59
922
0 0 = 1 0 = 0 = 0 0 0 = = = = 0 0 1 0 = = = 1 0 1 0 0 1 0 0 = =
–   Alaric 7042713+26
−26		(+42)13.5 − 12.5
(+9−8=9)
51.9%
13.5 / 26
0.2%
+57
55.1%
1369
0.85
755
1 1 1 = 0 1 0 0 = 1 0 0 = 1 1 0 = = 0 = 1 0 = = 1 =
–   Frenzee 3.0 64-bit2711+19
−19		(+40)14 − 17
(+11−14=6)
45.2%
14.0 / 31
0.0%
+4
51.8%
2341
0.82
1213
0 0 = 0 0 0 1 1 0 0 1 = 0 0 1 = 0 0 = = 1 1 = 0 1 1 1 0 1 1 0
–   Colossus 2007d2707+20
−20		(+36)11 − 15
(+6−10=10)
42.3%
11.0 / 26
0.1%
−15
54.7%
1611
0.65
881
1 = 0 = 1 0 = 0 = 0 0 0 = 0 0 = 1 0 = 1 = 1 1 0 = =
–   Pharaon 3.5.12704+19
−19		(+33)11.5 − 20.5
(+7−16=9)
35.9%
11.5 / 32
0.2%
−63
56.8%
2071
0.82
1176
1 0 = 0 1 = 1 1 0 = 0 0 0 0 0 0 0 0 = 0 = = = 1 0 1 0 0 0 1 = =
–   List 5.122699+18
−18		(+28)10 − 22
(+4−16=12)
31.3%
10.0 / 32
0.7%
−91
62.7%
1727
0.51
1082
0 = 0 = 0 = 1 = 0 0 0 = 0 = = 0 1 = 1 0 = 0 = 0 1 = 0 0 0 0 = 0
–   SOS 5.12697+18
−18		(+26)12.5 − 19.5
(+7−14=11)
39.1%
12.5 / 32
1.1%
−45
54.3%
1778
0.87
966
= 1 1 = = 0 0 = = = 0 = 1 0 0 0 0 0 1 1 1 0 = = 0 0 1 = = 0 0 0
–   Colossus 2007c2694+19
−19		(+23)14 − 18
(+8−12=12)
43.8%
14.0 / 32
2.5%
−17
59.9%
1630
0.77
977
= = 1 1 0 = 0 = 0 = = 1 = 0 = = 0 0 1 1 0 = 1 0 = 0 1 0 0 1 = 0
–   Ruffian 1.0.52687+17
−17		(+16)11.5 − 16.5
(+8−13=7)
41.1%
11.5 / 28
6.8%
−43
60.3%
1333
0.66
804
1 0 0 0 0 0 1 0 0 0 = 1 = 1 1 1 1 1 = 0 = 0 = 0 0 = 0 =
–   Petir 4.392682+18
−18		(+11)13.5 − 13.5
(+9−9=9)
50.0%
13.5 / 27
17.7%
+12
54.8%
1449
0.89
794
0 0 1 1 = 0 1 1 0 0 = = = 0 0 = = 0 = 1 1 = 1 = 1 1 0
–   Pseudo 0.7c2680+18
−18		(+9)14 − 18
(+8−12=12)
43.8%
14.0 / 32
21.1%
−30
56.9%
1848
0.77
1052
0 0 = = 0 1 = = 1 = = 1 = 0 0 = 0 1 = = 0 1 0 0 0 = 1 0 = 1 1 0
–   Petir 4.9999992670+19
−19		(−1)15.5 − 11.5
(+10−6=11)
57.4%
15.5 / 27
55.0%
+44
59.4%
1053
0.83
625
1 0 1 1 1 0 = = 0 = = = = 0 0 = 1 1 1 0 = = 1 1 = = 1
–   Hamsters 0.62669+18
−18		(−2)13.5 − 14.5
(+10−11=7)
48.2%
13.5 / 28
56.0%
−13
50.8%
1838
1.11
933
= 1 1 1 0 = 0 = 1 0 1 0 = 0 0 = 1 = 0 0 = 1 0 1 0 0 1 1
–   The Baron 2.23 64-bit2669+19
−19		(−2)12 − 20
(+8−16=8)
37.5%
12.0 / 32
55.7%
−89
55.9%
1618
0.85
904
0 0 0 0 1 1 0 0 = = 1 0 0 0 0 1 0 1 = 0 0 1 = = 0 0 = = 1 0 = 1
–   Booot 4.13.12668+18
−18		(−3)11 − 14
(+8−11=6)
44.0%
11.0 / 25
61.5%
−43
54.4%
1545
0.65
840
= = 1 0 0 1 0 0 0 0 = 1 0 0 1 = 1 = 0 = 1 1 1 0 0
–   BugChess2 1.5.22661+18
−18		(−10)13.5 − 12.5
(+10−9=7)
51.9%
13.5 / 26
81.0%
+7
53.8%
1711
1.19
920
= 0 1 = 1 0 1 0 1 0 = 1 = 1 1 1 1 0 1 = 0 0 0 = = 0
–   Jonny 2.832652+17
−17		(−19)16 − 16
(+14−14=4)
50.0%
16.0 / 32
95.9%
−19
49.3%
2639
0.88
1301
1 0 1 0 = 1 1 1 0 0 1 0 = 0 0 1 1 0 0 0 1 0 0 0 1 1 0 1 1 = 1 =
–   Crafty 21.5 64-bit PS2652+17
−17		(−19)10.5 − 15.5
(+5−10=11)
40.4%
10.5 / 26
95.3%
−79
56.8%
1227
0.70
697
0 = = 0 = = = 1 = 1 0 = = 0 1 0 0 = = 0 1 0 1 = 0 0
–   The Baron 1.8.12651+18
−18		(−20)15.5 − 8.5
(+14−7=3)
64.6%
15.5 / 24
96.0%
+94
53.2%
1691
0.77
900
1 1 1 0 = 0 1 0 1 1 1 0 0 0 1 1 = 1 1 1 0 1 1 =
–   Anaconda 2.0.12644+17
−17		(−27)13 − 14
(+9−10=8)
48.1%
13.0 / 27
99.1%
−39
54.7%
1519
0.74
831
0 = 1 0 0 = 1 = 0 0 0 = = 1 0 0 1 = = 1 1 1 0 = 0 1 1
–   Movei 00.8.4032643+22
−22		(−28)21.5 − 10.5
(+18−7=7)
67.2%
21.5 / 32
98.2%
+96
51.6%
2347
0.94
1211
1 1 1 1 = 1 1 1 0 0 1 = 1 1 = 1 0 0 = 0 1 = 1 1 1 0 1 = = 1 1 0
–   Fritz 5.322643+17
−17		(−28)18.5 − 11.5
(+15−8=7)
61.7%
18.5 / 30
99.3%
+55
59.1%
1870
0.93
1106
0 = 0 1 = 1 1 1 1 = 0 = 0 0 1 1 0 1 0 1 = 1 1 1 1 = 1 = 0 1
–   Ktulu 4.22634+17
−17		(−37)13 − 11
(+9−7=8)
54.2%
13.0 / 24
99.9%
−10
59.1%
1431
0.61
846
0 0 0 0 = = = 1 = = 0 1 1 = 1 0 = 0 1 1 1 = 1 1
–   Thinker 4.7a2634+17
−17		(−37)14 − 11
(+9−6=10)
56.0%
14.0 / 25
99.9%
0
58.2%
1175
0.84
684
0 1 = = = 1 1 = = = = 0 = 0 0 1 1 = 0 1 0 1 1 1 =
–   SmarThink 0.17a2633+16
−16		(−38)13 − 19
(+8−14=10)
40.6%
13.0 / 32
100.0%
−100
56.1%
1734
0.49
972
1 1 0 = = 1 0 0 1 1 = 0 = 0 1 = 0 = = 0 0 0 0 = = 0 0 1 0 1 0 =
–   Ufim 8.022628+18
−18		(−43)18.5 − 6.5
(+15−3=7)
74.0%
18.5 / 25
100.0%
+123
49.8%
1507
0.67
750
= 1 1 = = 0 = = 1 1 1 1 1 = 0 1 1 0 1 = 1 1 1 1 1
–   Fritz 6 Light2627+19
−19		(−44)13 − 11
(+10−8=6)
54.2%
13.0 / 24
100.0%
−13
57.3%
1594
1.05
914
1 1 0 1 1 = = 1 1 0 = 1 0 1 0 0 0 0 = 1 = 1 = 0
–   Trace 1.37a2622+17
−17		(−49)14 − 10
(+11−7=6)
58.3%
14.0 / 24
100.0%
+15
53.7%
1387
0.63
745
0 1 0 1 0 1 1 1 1 1 0 1 0 = 0 = 1 = 0 1 = 1 = =
–   AnMon 5.602621+18
−18		(−50)17 − 10
(+14−7=6)
63.0%
17.0 / 27
100.0%
+44
53.9%
1257
0.76
678
0 = 1 = 1 = 0 = = = 1 1 1 1 1 0 0 1 1 1 0 1 1 1 0 0 1
–   E.T. Chess 18.11.052620+21
−21		(−51)7.5 − 5.5
(+5−3=5)		57.7%
7.5 / 13
100.0%
+349.6%
722
0.72
358
= = 0 = 1 = 1 0 1 1 0 1 =
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17		(−57)15 − 12
(+13−10=4)
55.6%
15.0 / 27
100.0%
−14
49.6%
1842
0.68
914
1 1 0 1 0 = = 1 0 1 0 0 1 0 0 0 1 0 = 1 0 1 1 1 1 = 1
–   Yace 0.99.872609+17
−17		(−62)18 − 13
(+13−8=10)
58.1%
18.0 / 31
100.0%
−8
53.7%
1560
1.01
837
0 1 1 0 0 = = = 1 0 0 = 1 0 = = 0 1 = 1 1 = 1 1 = = 0 1 1 1 1
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19		(−64)16.5 − 8.5
(+12−4=9)
66.0%
16.5 / 25
100.0%
+38
52.1%
1326
0.74
691
= 0 = 1 = 1 0 = 1 1 1 1 1 1 0 0 1 1 1 = = 1 = = =
–   Pepito 1.59 32-bit2595+19
−19		(−76)15 − 10
(+13−8=4)
60.0%
15.0 / 25
100.0%
+2
52.1%
1472
0.77
767
0 1 0 0 0 0 1 0 = 1 1 = 0 1 1 1 0 1 = 1 1 1 1 = 1
–   Bruja 1.9 64-bit JA No-int-book2584+18
−18		(−87)16.5 − 10.5
(+14−8=5)
61.1%
16.5 / 27
100.0%
−4
55.4%
1569
0.69
869
0 1 1 1 = 1 1 = 0 0 1 1 0 1 0 1 = 0 = 1 1 1 1 0 0 1 =
1418 games in total: 465 wins, 545 losses, 408 draws (28.8%), score: 47.2%
Average opponent: +18.7 (2689.7), average distance to opponent: 50.0

Performance

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

Perf = C + 0.164 [±0.225] * 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