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

Options
Show each game results
Fruit 2.3 32-bit UCI  #1  (2888+23
−23
)Quote
Authors: Fabien Letouzey (France), Ryan Benitez (USA) Released: 2007-07-24Links: Fruit homepage, WBEC
Fruit is using 3 to 5-piece bitbases in Scorpio format in this tournament (379 MB).
This engine is stable and runs without issues.
This is the only Fruit version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Spike 1.2 Turin2842+23
−23
(−46)19.5 − 12.5
(+11−4=17)
60.9%
19.5 / 32
99.9%
+19
60.6%
1549
0.59
938
= = 1 0 0 0 = = = = 1 1 = = = = = 1 1 1 1 = 1 1 1 = = 0 = 1 = =
–   Glaurung 2.0.1 64-bit2838+23
−23
(−50)17.5 − 14.5
(+11−8=13)
54.7%
17.5 / 32
100.0%
−22
60.8%
1921
0.65
1168
0 1 = 1 = 1 = = 1 1 = = = = = 0 0 0 = 1 1 = 1 0 = 1 1 = 1 0 0 0
–   Frenzee Feb08 64-bit2810+24
−24
(−78)19 − 13
(+14−8=10)
59.4%
19.0 / 32
100.0%
−15
54.2%
2157
0.86
1170
0 1 1 = = 1 0 1 = 1 1 = = = = 0 = 1 0 = 1 1 0 = 1 1 1 0 1 1 0 0
–   Delfi 5.42801+24
−24
(−87)22.5 − 9.5
(+18−5=9)
70.3%
22.5 / 32
100.0%
+55
61.2%
2185
0.38
1338
1 = = 0 1 1 1 = 0 0 = 1 = = 1 1 = 1 1 0 1 1 = = 1 1 0 1 1 1 1 1
–   Naum 2.0 64-bit2793+21
−21
(−95)20.5 − 11.5
(+14−5=13)
64.1%
20.5 / 32
100.0%
−6
55.7%
1689
0.57
941
1 1 1 1 1 1 = 0 = 1 0 = 0 = = 0 = = 1 0 = 1 1 = 1 = = = 1 1 1 =
–   Bright 0.2c2786+23
−23
(−102)22.5 − 9.5
(+17−4=11)
70.3%
22.5 / 32
100.0%
+33
54.0%
2355
0.44
1272
= = 1 1 = 1 1 = 1 = = = 1 0 1 1 = 1 1 = 1 0 1 1 = 1 1 1 1 0 = 0
–   Naum 2.0 32-bit2777+26
−26
(−111)14.5 − 7.5
(+11−4=7)
65.9%
14.5 / 22
100.0%
0
60.2%
1472
0.59
886
1 1 0 = 0 = = 1 1 1 1 1 = = 0 = 1 1 1 1 0 =
–   Glaurung 1.2.1 64-bit2770+24
−24
(−118)18 − 7
(+13−2=10)
72.0%
18.0 / 25
100.0%
+18
58.3%
1505
0.57
877
1 = 0 = 1 = = 1 1 = 1 = 0 = 1 1 1 1 = 1 1 = 1 1 =
–   Alaric 7072768+22
−22
(−120)24 − 8
(+17−1=14)
75.0%
24.0 / 32
100.0%
+36
63.4%
1553
0.41
985
1 = 1 = = = = 1 1 1 1 1 = 1 1 = = = 1 1 = = 1 1 = 1 0 = 1 1 1 =
–   Scorpio 2.0 32-bit2754+23
−23
(−134)18.5 − 9.5
(+15−6=7)
66.1%
18.5 / 28
100.0%
−20
59.6%
2041
0.63
1217
1 1 1 1 = 1 = 0 1 0 1 = 1 0 = = 1 = = 1 1 1 1 1 0 1 0 0
–   Scorpio 1.912739+26
−26
(−149)16.5 − 7.5
(+13−4=7)
68.8%
16.5 / 24
100.0%
−21
57.0%
1774
0.68
1011
1 1 1 1 = 0 1 0 0 = 1 1 1 1 = 1 = 1 = 1 1 = = 0
–   E.T. Chess 13.01.082733+21
−21
(−155)19.5 − 3.5
(+17−1=5)
84.8%
19.5 / 23
100.0%
+112
59.8%
1564
0.50
936
= 1 1 1 1 1 1 1 = 1 1 1 1 1 1 1 1 = 1 = 0 1 =
–   WildCat 82730+22
−22
(−158)22 − 10
(+14−2=16)
68.8%
22.0 / 32
100.0%
−47
56.0%
1526
0.49
854
= = = 1 1 1 = = = = 1 1 1 1 = = 1 1 = = 1 1 = = = = 1 0 1 0 = 1
–   Alfil 8.1.1 Optimized2723+21
−21
(−165)21.5 − 5.5
(+19−3=5)
79.6%
21.5 / 27
100.0%
+69
56.8%
2075
0.59
1179
1 1 0 1 1 1 = 1 1 1 1 = 1 1 = 1 1 = 1 1 = 0 1 1 1 1 0
–   Movei 00.8.438 (10-10-10)2722+21
−21
(−166)18 − 9
(+15−6=6)
66.7%
18.0 / 27
100.0%
−44
60.8%
2170
0.41
1320
= 1 1 1 = 1 = 1 = 1 0 = 0 = 1 0 1 0 1 1 1 0 1 1 1 1 0
–   Pro Deo 1.62719+22
−22
(−169)23 − 7
(+19−3=8)
76.7%
23.0 / 30
100.0%
+22
54.7%
2073
0.62
1134
= = 1 1 1 1 1 = = = 1 = 1 1 1 1 1 = 1 1 0 1 0 1 1 0 1 1 = 1
–   Delfi 5.22718+21
−21
(−170)16.5 − 6.5
(+13−3=7)
71.7%
16.5 / 23
100.0%
−16
59.8%
1622
0.43
970
1 = 1 = 1 = 0 1 0 1 = 1 1 = 1 1 1 0 1 = = 1 1
–   WildCat 72718+19
−19
(−170)14 − 10
(+11−7=6)
58.3%
14.0 / 24
100.0%
−112
55.9%
1844
0.58
1030
= 1 0 0 = = 1 0 0 1 1 = 1 1 0 1 0 1 1 0 = = 1 1
–   Zappa 1.1 64-bit2717+19
−19
(−171)19.5 − 9.5
(+15−5=9)
67.2%
19.5 / 29
100.0%
−54
57.4%
1902
0.52
1092
1 1 = 1 1 1 0 1 = = = 1 0 = 1 0 1 0 1 1 1 = = 0 = 1 1 1 =
–   Slow Chess Blitz WV2.12716+19
−19
(−172)20.5 − 6.5
(+18−4=5)
75.9%
20.5 / 27
100.0%
+30
56.9%
1858
0.53
1057
1 1 0 1 1 1 = 1 = 1 = 1 1 1 1 = 0 1 1 1 = 0 1 1 0 1 1
–   Frenzee 3.0 64-bit2711+19
−19
(−177)19.5 − 7.5
(+16−4=7)
72.2%
19.5 / 27
100.0%
−21
56.5%
2161
0.57
1220
1 = 1 1 1 1 1 1 = 1 0 1 1 1 0 1 = 1 = = 1 1 = 0 0 1 =
–   Colossus 2007d2707+20
−20
(−181)22 − 7
(+16−1=12)
75.9%
22.0 / 29
100.0%
−17
58.0%
1745
0.52
1012
1 1 = = 1 = 1 1 1 1 1 = = 1 1 1 1 = 1 = = = = 1 1 = 0 = 1
–   Pharaon 3.5.12704+19
−19
(−184)19 − 6
(+14−1=10)
76.0%
19.0 / 25
100.0%
−18
59.5%
1451
0.63
864
1 = 1 = 1 1 1 = = = 1 = = 1 1 = 1 1 1 = = 0 1 1 1
–   List 5.122699+18
−18
(−189)16.5 − 8.5
(+12−4=9)
66.0%
16.5 / 25
100.0%
−83
53.7%
1575
0.68
846
1 = = 1 0 1 1 1 1 1 = 0 = = 1 = 1 = = 1 0 0 1 1 =
–   SOS 5.12697+18
−18
(−191)19.5 − 4.5
(+17−2=5)
81.3%
19.5 / 24
100.0%
+46
56.1%
1957
0.47
1097
0 1 = 1 1 1 0 1 1 1 1 1 = 1 1 = 1 1 = 1 1 1 1 =
–   Colossus 2007c2694+19
−19
(−194)19.5 − 4.5
(+18−3=3)
81.3%
19.5 / 24
100.0%
+68
58.9%
1727
0.61
1018
1 1 0 1 1 1 1 1 1 1 0 1 1 1 1 = 1 0 1 1 = 1 = 1
–   Ruffian 1.0.52687+17
−17
(−201)24.5 − 3.5
(+21−0=7)
87.5%
24.5 / 28
100.0%
+87
59.6%
2070
0.54
1234
1 1 1 = 1 1 1 1 = 1 1 1 = 1 = 1 = 1 1 1 = 1 1 1 1 1 1 =
–   Petir 4.392682+18
−18
(−206)22.5 − 5.5
(+19−2=7)
80.4%
22.5 / 28
100.0%
+13
59.4%
2019
0.72
1199
1 1 = 1 1 0 = 1 1 0 1 = 1 1 = 1 1 1 1 1 = = 1 1 1 1 = 1
–   Pseudo 0.7c2680+18
−18
(−208)18 − 4
(+16−2=4)
81.8%
18.0 / 22
100.0%
+49
58.7%
2078
0.47
1220
= 1 1 1 1 1 = 1 1 1 1 1 0 1 1 = 1 1 1 1 = 0
–   Aristarch 4.502671+18
−18
(−217)17 − 9
(+14−6=6)
65.4%
17.0 / 26
100.0%
−107
54.8%
1835
0.76
1005
= = 1 0 1 0 1 = 1 1 0 1 1 = 1 = 1 1 1 0 0 1 1 0 1 =

Performance

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

Perf = C + 0.097 [±0.421] * 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