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
Alfil 8.1.1 Optimized UCI#12  (2723+21
−21
)Quote
Author: Enrique Sanchez Acosta (Spain) Released: 2008-01-26Link: Homepage
This engine is stable and runs without issues.
This is the only Alfil version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Fruit 2.3 32-bit2888+23
−23
(+165)5.5 − 21.5
(+3−19=5)
20.4%
5.5 / 27
0.0%
−69
56.8%
2075
0.59
1179
0 0 1 0 0 0 = 0 0 0 0 = 0 0 = 0 0 = 0 0 = 1 0 0 0 0 1
–   Spike 1.2 Turin2842+23
−23
(+119)7 − 16
(+3−12=8)
30.4%
7.0 / 23
0.0%
−12
56.3%
1685
0.74
949
0 = = 0 0 0 = = = 1 = 0 = 1 0 0 = 1 0 0 0 0 0
–   Glaurung 2.0.1 64-bit2838+23
−23
(+115)10 − 16
(+2−8=16)
38.5%
10.0 / 26
0.0%
+50
55.2%
1030
0.76
569
= 0 = = 0 = = = 0 0 = = = = = = = = 0 0 = 0 0 1 = 1
–   Frenzee Feb08 64-bit2810+24
−24
(+87)11 − 21
(+7−17=8)
34.4%
11.0 / 32
0.0%
−25
56.3%
2135
1.32
1203
0 = 0 1 = 0 1 0 0 = 0 = 1 = 0 1 = 0 1 = 0 0 0 0 = 1 0 0 0 0 1 0
–   Delfi 5.42801+24
−24
(+78)10.5 − 21.5
(+5−16=11)
32.8%
10.5 / 32
0.0%
−35
59.7%
2025
0.56
1208
0 = 0 0 = 0 0 = 1 0 = 0 = = 0 0 0 1 = = 0 1 = 0 = 1 1 0 0 0 0 =
–   Naum 2.0 64-bit2793+21
−21
(+70)8 − 18
(+5−15=6)
30.8%
8.0 / 26
0.0%
−71
55.8%
1862
0.82
1039
0 = 0 0 = 1 0 = 0 1 = 0 0 0 1 0 = 0 = 1 0 0 1 0 0 0
–   Bright 0.2c2786+23
−23
(+63)10.5 − 16.5
(+7−13=7)
38.9%
10.5 / 27
0.0%
−14
56.2%
1905
0.70
1070
= = 0 1 0 1 0 1 = 0 0 = 0 1 0 0 = 0 0 = 0 1 0 = 0 1 1
–   Naum 2.0 32-bit2777+26
−26
(+54)9.5 − 15.5
(+5−11=9)
38.0%
9.5 / 25
0.0%
−26
56.7%
1495
0.78
847
0 0 0 1 = 1 = 0 0 = = 0 0 0 1 = 1 1 0 0 = = = = 0
–   Alaric 7072768+22
−22
(+45)10 − 16
(+7−13=6)
38.5%
10.0 / 26
0.1%
−38
55.7%
2148
0.68
1197
= 0 1 0 = 1 0 0 0 0 = = 0 1 0 1 1 = 0 0 = 0 1 0 0 1
–   Scorpio 2.0 32-bit2754+23
−23
(+31)10 − 17
(+6−13=8)
37.0%
10.0 / 27
1.3%
−59
57.9%
1776
0.93
1029
= 0 = 0 0 1 1 1 = 1 1 0 0 = 0 0 0 0 0 = 0 1 0 0 = = =
–   E.T. Chess 13.01.082733+21
−21
(+10)16 − 11
(+10−5=12)
59.3%
16.0 / 27
23.9%
+66
55.8%
1525
0.66
851
= 1 0 1 0 1 1 1 = 1 = 0 1 0 1 = = = 0 = = = 1 = 1 = =
–   WildCat 82730+22
−22
(+7)15.5 − 16.5
(+10−11=11)
48.4%
15.5 / 32
30.9%
−2
58.6%
2023
0.70
1185
0 1 1 0 0 1 1 = = 1 = = = 0 1 = 1 0 = 0 = = = 0 1 0 1 0 0 = 0 1
–   Movei 00.8.438 (10-10-10)2722+21
−21
(−1)11.5 − 15.5
(+7−11=9)
42.6%
11.5 / 27
53.9%
−52
60.2%
1703
0.64
1026
1 0 0 = = 0 0 = 0 = 1 0 1 0 = 0 = = 1 0 1 = 0 = 0 1 1
–   Pro Deo 1.62719+22
−22
(−4)14 − 11
(+9−6=10)
56.0%
14.0 / 25
62.9%
+35
54.0%
1498
0.68
809
0 = 1 = = 0 1 = 0 0 1 = = 1 1 = = 0 1 1 = = 0 1 1
–   Delfi 5.22718+21
−21
(−5)11.5 − 14.5
(+9−12=5)
44.2%
11.5 / 26
63.7%
−48
59.1%
2100
0.64
1241
0 1 0 1 0 0 1 0 1 = 1 0 = 0 0 1 = 1 = 0 1 = 0 0 1 0
–   WildCat 72718+19
−19
(−5)10.5 − 14.5
(+8−12=5)
42.0%
10.5 / 25
65.3%
−66
55.3%
1979
0.75
1094
= = 1 0 1 = 0 0 = 1 0 0 0 0 = 0 1 1 0 1 1 0 0 1 0
–   Zappa 1.1 64-bit2717+19
−19
(−6)15.5 − 10.5
(+12−7=7)
59.6%
15.5 / 26
66.9%
+63
59.1%
1933
0.70
1142
1 = 0 0 1 = 1 = 1 0 1 1 0 = 1 0 = 1 0 1 1 = 0 = 1 1
–   Slow Chess Blitz WV2.12716+19
−19
(−7)15.5 − 12.5
(+10−7=11)
55.4%
15.5 / 28
71.8%
+25
60.7%
1493
0.60
906
0 0 = = 1 = = 1 0 = 1 1 = = 1 0 = 0 = 0 = 1 0 1 1 1 = 1
–   Frenzee 3.0 64-bit2711+19
−19
(−12)15 − 10
(+11−6=8)
60.0%
15.0 / 25
82.7%
+58
55.9%
1658
0.69
926
1 1 = 1 0 = 0 1 = = 1 = 0 0 1 1 = 1 1 0 1 = 0 1 =
–   Colossus 2007d2707+20
−20
(−16)17.5 − 9.5
(+12−4=11)
64.8%
17.5 / 27
88.9%
+79
55.6%
1564
0.53
870
0 = 1 1 0 = 1 = 1 1 = = 0 1 1 = 1 = = = 1 1 1 = 1 0 =
–   Pharaon 3.5.12704+19
−19
(−19)12.5 − 11.5
(+10−9=5)
52.1%
12.5 / 24
93.4%
−4
59.8%
2070
0.55
1238
0 1 0 1 = 0 0 1 1 = 1 = = 1 0 0 1 0 0 1 = 1 1 0
–   List 5.122699+18
−18
(−24)13 − 13
(+9−9=8)
50.0%
13.0 / 26
97.5%
−21
56.8%
1607
0.74
913
0 1 1 0 0 = 0 = 1 = 1 = 0 0 1 = 1 1 1 = = 1 = 0 0 0
–   SOS 5.12697+18
−18
(−26)17.5 − 10.5
(+14−7=7)
62.5%
17.5 / 28
98.3%
+60
56.9%
1765
0.77
1005
= 1 1 0 1 = = 1 = 0 1 1 = 0 1 0 1 1 0 1 1 0 0 1 = 1 = 1
–   Ruffian 1.0.52687+17
−17
(−36)12.5 − 12.5
(+7−7=11)
50.0%
12.5 / 25
99.8%
−33
57.2%
1357
0.66
776
0 = 1 1 1 = 1 = = = 0 = 1 0 1 1 0 0 = = = 0 = = 0
–   Pseudo 0.7c2680+18
−18
(−43)11.5 − 15.5
(+8−12=7)
42.6%
11.5 / 27
100.0%
−97
58.9%
2362
0.64
1392
1 1 1 = 0 = 0 0 1 1 0 0 0 0 1 0 = 0 = = 1 0 = = 0 0 1
–   Aristarch 4.502671+18
−18
(−52)12 − 13
(+9−10=6)
48.0%
12.0 / 25
100.0%
−64
51.2%
1811
0.73
927
1 1 1 1 = 0 0 0 = 0 = 1 1 = = = 0 0 1 1 0 0 0 1 0
–   Petir 4.9999992670+19
−19
(−53)12 − 15
(+7−10=10)
44.4%
12.0 / 27
100.0%
−91
58.8%
1574
0.64
925
1 0 1 1 = 0 = = 1 = 0 0 0 = = = 0 = 1 0 1 0 1 0 = = 0
–   Hamsters 0.62669+18
−18
(−54)18 − 8
(+15−5=6)
69.2%
18.0 / 26
100.0%
+84
60.1%
2025
0.56
1218
= = 1 0 = 0 1 1 = 1 0 1 1 0 1 1 = 1 1 = 1 1 1 1 0 1
–   The Baron 2.23 64-bit2669+19
−19
(−54)21.5 − 10.5
(+20−9=3)
67.2%
21.5 / 32
100.0%
+86
58.4%
2404
0.59
1403
0 1 1 1 0 0 0 1 1 1 1 0 = 1 = 1 0 1 1 0 0 1 1 1 1 1 1 0 1 = 1 1
–   Booot 4.13.12668+18
−18
(−55)18.5 − 8.5
(+14−4=9)
68.5%
18.5 / 27
100.0%
+69
58.5%
1842
0.49
1077
1 = = = 1 = 1 0 1 0 1 1 1 1 = 1 0 1 1 1 = 1 = = 1 = 0
–   BugChess2 1.5.22661+18
−18
(−62)20 − 9
(+18−7=4)
69.0%
20.0 / 29
100.0%
+84
58.6%
2395
0.53
1404
1 0 1 0 1 1 1 1 = 0 1 0 1 = 1 0 1 = 1 1 1 1 0 = 1 1 1 0 1
–   Jonny 2.832652+17
−17
(−71)15 − 13
(+9−7=12)
53.6%
15.0 / 28
100.0%
−46
54.5%
1356
0.69
739
= 0 1 = 0 0 = 1 1 = 0 = 1 = 1 1 = 0 1 = 1 = 0 0 = 1 = =
–   The Baron 1.8.12651+18
−18
(−72)17 − 11
(+11−5=12)
60.7%
17.0 / 28
100.0%
−9
57.3%
1491
0.86
855
= 1 = 0 1 = 1 = 0 1 0 = = = 1 = 0 1 = = 1 = 1 1 0 1 = 1
–   Yace 0.99.872609+17
−17
(−114)20 − 8
(+16−4=8)
71.4%
20.0 / 28
100.0%
+32
62.7%
1640
0.61
1029
1 1 0 1 1 = = 1 0 1 1 = 1 = 1 1 0 = 1 = 1 1 1 1 = = 1 0
–   Green Light Chess 3.002582+17
−17
(−141)20.5 − 5.5
(+18−3=5)
78.8%
20.5 / 26
100.0%
+80
58.2%
1766
0.53
1027
1 1 1 0 = 1 1 1 = 1 1 1 1 1 0 1 1 = 0 1 = 1 1 = 1 1

Performance

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

Perf = C − 0.273 [±0.280] * 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