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
Petir 4.39 WB#22  (2682+18
−18		)Quote
Author: Peter Alloysius (Indonesia) Released: 2007-04-08Link: Homepage
This engine is stable and runs without issues.
This is one of the 2 Petir versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Fruit 2.3 32-bit2888+23
−23		(+206)5.5 − 22.5
(+2−19=7)
19.6%
5.5 / 28
0.0%
−13
59.4%
2019
0.72
1199
0 0 = 0 0 1 = 0 0 1 0 = 0 0 = 0 0 0 0 0 = = 0 0 0 0 = 0
–   Spike 1.2 Turin2842+23
−23		(+160)6.5 − 21.5
(+0−15=13)
23.2%
6.5 / 28
0.0%
−5
60.6%
1306
0.88
791
0 0 = 0 0 = 0 = 0 0 0 = = 0 = = = 0 = 0 = = 0 0 0 0 = =
–   Naum 2.0 64-bit2793+21
−21		(+111)14.5 − 15.5
(+9−10=11)
48.3%
14.5 / 30
0.0%
+98
55.0%
2033
0.71
1119
1 1 0 1 = = 0 = 1 = 0 1 0 0 0 = 0 = 1 1 1 0 = = 0 1 = = 0 =
–   Naum 2.0 32-bit2777+26
−26		(+95)10 − 19
(+5−14=10)
34.5%
10.0 / 29
0.0%
−9
58.5%
1693
0.77
990
0 = = 0 0 0 = = 0 1 0 = 0 = = = 0 0 1 1 1 = 0 0 0 1 0 = 0
–   Glaurung 1.2.1 64-bit2770+24
−24		(+88)10.5 − 19.5
(+6−15=9)
35.0%
10.5 / 30
0.0%
−12
59.9%
2127
0.54
1274
0 = = 0 0 0 = 1 0 = 0 1 = 1 0 0 = 0 = 0 = 0 0 = 1 1 0 0 1 0
–   Alaric 7072768+22
−22		(+86)10 − 18
(+7−15=6)
35.7%
10.0 / 28
0.0%
−16
59.3%
2066
0.70
1225
1 = 1 1 0 = 0 0 0 1 0 0 1 0 = = 0 = 0 = 1 0 0 0 0 0 1 0
–   Scorpio 2.0 32-bit2754+23
−23		(+72)13.5 − 10.5
(+9−6=9)
56.3%
13.5 / 24
0.0%
+110
57.7%
1711
0.88
987
0 = = 1 0 = 1 1 0 1 1 = 0 = 1 0 1 0 = 1 = = = 1
–   Scorpio 1.912739+26
−26		(+57)10.5 − 17.5
(+6−13=9)
37.5%
10.5 / 28
0.0%
−30
62.4%
1856
1.06
1159
1 = 0 0 = 1 1 0 0 0 0 1 = 0 = 0 = 1 = 0 = 0 0 0 0 = = 1
–   Movei 00.8.438 (10-10-10)2722+21
−21		(+40)10.5 − 14.5
(+8−12=5)
42.0%
10.5 / 25
0.1%
−17
58.9%
2210
0.40
1301
1 = 1 0 1 0 0 = 0 0 1 1 0 1 0 = 1 1 0 0 = 0 0 0 =
–   Delfi 5.22718+21
−21		(+36)10 − 17
(+3−10=14)
37.0%
10.0 / 27
0.2%
−39
60.7%
1566
0.60
951
0 0 = = = = = 0 = 0 0 = 0 = 0 = = 1 = 1 = 0 = 0 = 0 1
–   WildCat 72718+19
−19		(+36)12.5 − 11.5
(+9−8=7)
52.1%
12.5 / 24
0.1%
+43
61.3%
1416
0.71
868
= 0 = 1 0 0 = 1 1 1 0 0 1 1 0 = 1 0 0 = 1 = = 1
–   Zappa 1.1 64-bit2717+19
−19		(+35)11.5 − 15.5
(+6−10=11)
42.6%
11.5 / 27
0.1%
−9
59.3%
1570
0.79
931
1 0 = = = 1 0 = 0 0 1 1 = 0 1 0 = = 1 0 0 0 0 = = = =
–   Slow Chess Blitz WV2.12716+19
−19		(+34)12.5 − 13.5
(+8−9=9)
48.1%
12.5 / 26
0.2%
+23
61.7%
2092
0.60
1291
1 1 0 1 0 0 = = = 0 0 = = 0 1 1 0 = = 0 1 = = 1 0 1
–   Alaric 7042713+26
−26		(+31)11 − 15
(+7−11=8)
42.3%
11.0 / 26
1.8%
−21
61.8%
1958
0.50
1211
0 0 0 1 0 = 0 = 1 1 = = 0 1 0 = 1 0 = 0 0 0 = 1 = 1
–   Frenzee 3.0 64-bit2711+19
−19		(+29)10.5 − 15.5
(+6−11=9)
40.4%
10.5 / 26
0.7%
−35
58.8%
1845
0.70
1085
1 = 1 0 1 1 0 0 = 0 0 0 0 = = 1 0 = = 0 0 0 = = 1 =
–   Pharaon 3.5.12704+19
−19		(+22)9.5 − 12.5
(+6−9=7)
43.2%
9.5 / 22
2.8%
−28
60.4%
1404
0.58
848
1 = 0 = = 1 0 1 0 = = 1 0 0 1 1 0 0 0 = = 0
–   List 5.122699+18
−18		(+17)12 − 15
(+8−11=8)
44.4%
12.0 / 27
7.0%
−20
57.4%
2003
0.61
1149
0 1 0 = = 0 1 = 0 0 1 = 0 0 1 0 1 1 0 0 = = 1 0 = = 1
–   SOS 5.12697+18
−18		(+15)12 − 13
(+7−8=10)
48.0%
12.0 / 25
9.6%
0
60.2%
1171
0.76
705
0 1 = 1 1 = 0 0 = 1 1 1 = = = 0 0 = = 0 0 0 1 = =
–   Colossus 2007c2694+19
−19		(+12)11 − 15
(+7−11=8)
42.3%
11.0 / 26
15.4%
−40
60.7%
1830
0.58
1110
0 1 = 0 = 0 0 = 0 0 = 0 = = = 0 1 1 1 = 0 1 1 1 0 0
–   Ruffian 1.0.52687+17
−17		(+5)14 − 11
(+10−7=8)
56.0%
14.0 / 25
30.3%
+44
58.6%
1730
0.50
1013
1 1 1 = 1 1 1 1 1 0 = = 0 0 0 = 0 1 = 0 = = 0 1 =
–   Pseudo 0.7c2680+18
−18		(−2)11.5 − 10.5
(+8−7=7)
52.3%
11.5 / 22
55.4%
+12
65.8%
1470
0.51
967
1 1 1 0 = = = = 0 1 = = 1 = 0 1 0 0 0 1 0 1
–   Aristarch 4.502671+18
−18		(−11)13.5 − 13.5
(+9−9=9)
50.0%
13.5 / 27
82.3%
−12
54.8%
1449
0.89
794
1 1 0 0 = 1 0 0 1 1 = = = 1 1 = = 1 = 0 0 = 0 = 0 0 1
–   Petir 4.9999992670+19
−19		(−12)15.5 − 16.5
(+11−12=9)
48.4%
15.5 / 32
84.4%
−22
70.8%
2208
0.30
1563
0 0 1 = 1 = 1 1 = 1 1 = 1 = = 1 0 0 0 0 = 1 0 = 0 1 0 0 0 0 = 1
–   Hamsters 0.62669+18
−18		(−13)13 − 12
(+9−8=8)
52.0%
13.0 / 25
85.1%
0
60.1%
1850
0.50
1111
= = 0 1 = = 1 1 1 0 = 1 = 0 0 1 1 0 1 0 1 = = 0 0
–   Booot 4.13.12668+18
−18		(−14)10.5 − 16.5
(+5−11=11)
38.9%
10.5 / 27
88.5%
−88
61.5%
1636
0.70
1006
1 = 0 = = = 1 0 = 1 = 1 1 0 0 = 0 = = 0 0 0 0 0 = 0 =
–   BugChess2 1.5.22661+18
−18		(−21)5.5 − 17.5
(+1−13=9)
23.9%
5.5 / 23
96.0%
−187
60.1%
1317
0.61
792
0 0 = 0 = = 0 = 0 = 0 = = 0 0 = 0 0 = 0 1 0 0
–   Jonny 2.832652+17
−17		(−30)14.5 − 11.5
(+11−8=7)
55.8%
14.5 / 26
99.6%
+13
57.3%
1867
0.59
1069
= 1 = 1 1 0 = = 1 0 0 1 1 1 0 = 1 0 1 = 0 0 = 0 1 1
–   Crafty 21.5 64-bit PS2652+17
−17		(−30)14.5 − 10.5
(+9−5=11)
58.0%
14.5 / 25
99.5%
+17
57.9%
1317
0.73
763
= 1 1 = = = 0 1 0 = 1 1 1 0 = 1 = 0 = 1 1 = = = 0
–   The Baron 1.8.12651+18
−18		(−31)19.5 − 10.5
(+16−7=7)
65.0%
19.5 / 30
99.6%
+75
54.1%
2254
0.89
1219
0 = 1 1 1 1 = 1 1 = 0 = 1 0 1 1 1 0 1 = 1 = 1 1 0 0 = 1 1 0
–   Anaconda 2.0.12644+17
−17		(−38)15.5 − 10.5
(+11−6=9)
59.6%
15.5 / 26
99.9%
+23
64.3%
1462
0.64
940
= = 0 = = = 1 = 0 0 0 1 1 1 1 = = 1 1 1 0 1 1 = 1 0
–   Movei 00.8.4032643+22
−22		(−39)15 − 14
(+8−7=14)
51.7%
15.0 / 29
99.8%
−26
60.8%
1483
0.49
902
0 = 1 0 = = = 1 = = 0 0 0 = 1 = 1 0 1 = 1 = 1 = 1 = = 0 =
–   Fritz 5.322643+17
−17		(−39)15.5 − 13.5
(+12−10=7)
53.4%
15.5 / 29
100.0%
−13
60.7%
2435
0.58
1477
0 1 0 0 = 0 = = = 1 1 0 1 1 1 1 1 0 = = 0 1 1 1 1 0 0 0 =
–   Ktulu 4.22634+17
−17		(−48)15 − 11
(+11−7=8)
57.7%
15.0 / 26
100.0%
0
58.7%
1913
0.88
1122
1 1 1 0 1 1 1 = 1 1 0 1 0 = = 0 = 0 = 1 0 0 = 1 = =
–   Thinker 4.7a2634+17
−17		(−48)20 − 7
(+15−2=10)
74.1%
20.0 / 27
100.0%
+104
59.8%
1671
0.50
999
= 1 = 0 1 = 1 1 = = 0 1 = 1 1 1 1 1 1 1 1 1 = = = 1 =
–   SmarThink 0.17a2633+16
−16		(−49)11.5 − 14.5
(+6−9=11)
44.2%
11.5 / 26
100.0%
−82
57.9%
1375
0.66
796
= = 0 = 1 = 1 = 0 = 1 1 0 0 = = 0 1 0 1 0 = = 0 = 0
–   Ufim 8.022628+18
−18		(−54)18 − 6
(+14−2=8)
75.0%
18.0 / 24
100.0%
+118
63.2%
1521
0.71
961
1 1 = 1 = = 1 = 1 1 1 0 1 1 1 = 1 = = 1 1 0 = 1
–   Fritz 6 Light2627+19
−19		(−55)19 − 8
(+14−3=10)
70.4%
19.0 / 27
100.0%
+82
62.3%
1476
0.57
920
= 0 1 = = 1 = 1 1 1 0 = 1 1 1 1 1 = = = 1 = 1 = 1 0 1
–   Trace 1.37a2622+17
−17		(−60)15.5 − 13.5
(+11−9=9)
53.4%
15.5 / 29
100.0%
−33
57.5%
1916
0.69
1101
0 1 0 0 = 0 1 1 0 1 1 1 1 0 = = = 1 = 1 0 = = 1 0 0 = = 1
–   AnMon 5.602621+18
−18		(−61)11 − 12
(+5−6=12)
47.8%
11.0 / 23
100.0%
−70
59.6%
1135
0.47
676
= 1 = 0 = = = = 0 0 1 = 0 = = = 1 0 = = 1 1 0
–   E.T. Chess 18.11.052620+21
−21		(−62)12.5 − 10.5
(+8−6=9)
54.3%
12.5 / 23
100.0%
−30
61.8%
1420
0.60
877
= = 1 = 1 0 1 = = = 1 = 1 0 1 0 = = 0 0 0 1 1
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17		(−68)17 − 8
(+12−3=10)
68.0%
17.0 / 25
100.0%
+46
51.3%
1486
0.84
762
= 1 1 = = = = 1 1 = 1 0 = 1 0 = 1 1 = = 1 1 0 1 1
–   Yace 0.99.872609+17
−17		(−73)13 − 10
(+10−7=6)
56.5%
13.0 / 23
100.0%
−31
59.0%
1623
0.46
958
1 0 1 1 = = 0 0 1 1 0 1 0 = = 1 1 = 0 1 = 0 1
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19		(−75)16.5 − 8.5
(+11−3=11)
66.0%
16.5 / 25
100.0%
+21
54.0%
1254
0.87
677
= = = = = 0 1 = = 1 = 1 1 = 0 1 = 1 0 1 1 1 1 1 =
–   Hamsters 0.52595+21
−21		(−87)19 − 9
(+14−4=10)
67.9%
19.0 / 28
100.0%
+29
57.1%
2023
0.67
1155
1 1 = 1 = 1 = 1 = 1 = 0 1 = = 1 0 1 1 1 = 1 1 = 1 0 0 =
–   Green Light Chess 3.002582+17
−17		(−100)20.5 − 5.5
(+17−2=7)
78.8%
20.5 / 26
100.0%
+109
59.9%
2006
0.46
1202
1 = 1 = 1 1 1 1 = 1 = 1 = 1 1 1 1 1 0 = 0 1 = 1 1 1
–   Tao 5.62574+17
−17		(−108)15 − 9
(+12−6=6)
62.5%
15.0 / 24
100.0%
−18
60.7%
2082
0.55
1264
1 0 1 = = = 1 1 1 1 0 0 0 0 1 0 1 1 = 1 1 1 = =
–   Amyan 1.5972552+17
−17		(−130)15 − 10
(+10−5=10)
60.0%
15.0 / 25
100.0%
−64
57.9%
1755
0.53
1016
= 1 0 = 1 = 0 = 1 0 = = 1 0 = 1 = 1 1 1 0 1 1 = =
1233 games in total: 409 wins, 401 losses, 423 draws (34.3%), score: 50.3%
Average opponent: −1.8 (2680.2), average distance to opponent: 54.8

Performance

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

Perf = C + 0.004 [±0.244] * 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