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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Scorpio 1.91 WB (2739+26
−26		)Quote
Author: Daniel Shawul (Ethiopia) Released: 2007-02-01Links: WBEC, Jim Ablett's compile
This engine is stable and runs without issues.
This is one of the 2 Scorpio versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Fruit 2.3 32-bit2888+23
−23		(+149)7.5 − 16.5
(+4−13=7)
31.3%
7.5 / 24
0.0%
+21
57.0%
1774
0.68
1011
0 0 0 0 = 1 0 1 1 = 0 0 0 0 = 0 = 0 = 0 0 = = 1
–   Spike 1.2 Turin2842+23
−23		(+103)10 − 17
(+6−13=8)
37.0%
10.0 / 27
0.0%
+11
56.6%
1779
0.53
1007
0 0 = 1 = = = 0 0 = 0 1 = 0 1 1 = 0 = 0 0 0 0 1 0 0 1
–   Naum 2.0 64-bit2793+21
−21		(+54)8.5 − 17.5
(+2−11=13)
32.7%
8.5 / 26
0.0%
−48
56.2%
1560
0.53
877
= = 0 1 0 = = = 0 = = 0 = 0 0 0 = 0 = 1 = = 0 0 = 0
–   Naum 2.0 32-bit2777+26
−26		(+38)13.5 − 15.5
(+8−10=11)
46.6%
13.5 / 29
1.2%
+12
57.8%
1608
0.56
930
1 0 = = = = 0 0 1 0 1 0 = 1 1 0 = = = 0 1 1 = 0 0 = 0 = 1
–   Glaurung 1.2.1 64-bit2770+24
−24		(+31)9.5 − 17.5
(+6−14=7)
35.2%
9.5 / 27
2.9%
−73
58.8%
1887
0.81
1109
0 1 0 0 = = = 0 1 0 0 = 1 1 0 = = 0 0 = 0 0 0 0 1 0 1
–   Alaric 7072768+22
−22		(+29)10 − 17
(+5−12=10)
37.0%
10.0 / 27
2.8%
−56
59.0%
1703
0.69
1005
1 = = 1 1 0 0 = = = 0 = = 1 0 0 = 0 0 1 0 = 0 0 0 0 =
–   Movei 00.8.438 (10-10-10)2722+21
−21		(−17)11.5 − 14.5
(+7−10=9)
44.2%
11.5 / 26
87.2%
−56
56.0%
1665
0.66
933
= = 1 0 1 0 = = 0 0 = 1 = 0 0 = 0 0 1 = 1 = 1 0 1 0
–   WildCat 72718+19
−19		(−21)17 − 10
(+11−4=12)
63.0%
17.0 / 27
92.2%
+62
61.1%
1617
0.69
988
0 1 = = 1 1 = = 1 = 1 0 = = 0 = 0 1 = 1 1 1 1 = = 1 =
–   Zappa 1.1 64-bit2717+19
−19		(−22)15 − 13
(+10−8=10)
53.6%
15.0 / 28
92.9%
+2
61.6%
1801
0.74
1109
= 0 = = 0 0 0 = 1 0 0 = 1 0 1 = 1 1 1 0 1 1 = = 1 1 = =
–   Slow Chess Blitz WV2.12716+19
−19		(−23)14.5 − 10.5
(+12−8=5)
58.0%
14.5 / 25
94.2%
+29
59.9%
1932
0.81
1158
1 = 1 = 1 1 1 = 1 0 1 0 1 1 0 = 0 1 1 0 1 0 0 = 0
–   Alaric 7042713+26
−26		(−26)17.5 − 10.5
(+13−6=9)
62.5%
17.5 / 28
94.0%
+60
58.5%
1636
0.87
957
1 = = 1 1 1 1 0 = 1 0 = = = = 0 0 1 1 1 0 1 0 1 = = 1 1
–   Frenzee 3.0 64-bit2711+19
−19		(−28)13 − 15
(+9−11=8)
46.4%
13.0 / 28
97.1%
−54
56.1%
1749
0.66
981
1 1 1 1 = = 0 1 0 0 = = = 0 = 1 1 0 0 0 = 0 0 0 = 1 0 1
–   Pharaon 3.5.12704+19
−19		(−35)14.5 − 13.5
(+9−8=11)
51.8%
14.5 / 28
99.2%
−23
57.8%
1733
0.85
1001
1 = 0 = 1 1 0 1 = 1 0 = 1 0 0 = = 1 = 1 0 = 0 1 = = 0 =
–   List 5.122699+18
−18		(−40)17.5 − 9.5
(+14−6=7)
64.8%
17.5 / 27
99.7%
+69
60.3%
2038
0.67
1228
1 1 1 = 1 1 1 = 1 = 0 1 = 1 1 0 0 1 0 1 0 = = 0 = 1 1
–   SOS 5.12697+18
−18		(−42)13.5 − 11.5
(+10−8=7)
54.0%
13.5 / 25
99.8%
−13
57.3%
1987
0.79
1138
1 1 = 0 = 0 1 0 1 0 = 1 = = 0 0 1 0 1 = 1 = 1 1 0
–   Colossus 2007c2694+19
−19		(−45)17 − 8
(+13−4=8)
68.0%
17.0 / 25
99.9%
+75
58.8%
1734
0.79
1020
= 0 = = 1 1 0 1 1 1 = 0 = = 1 1 1 = 0 1 1 = 1 1 1
–   Ruffian 1.0.52687+17
−17		(−52)16 − 12
(+12−8=8)
57.1%
16.0 / 28
100.0%
0
61.9%
1865
0.61
1155
0 0 = 1 0 1 = 1 = 0 0 1 1 1 1 = 1 = 1 = 1 = 0 1 0 0 = 1
–   Petir 4.392682+18
−18		(−57)17.5 − 10.5
(+13−6=9)
62.5%
17.5 / 28
100.0%
+30
62.4%
1856
1.06
1159
0 = 1 1 = 0 0 1 1 1 1 0 = 1 = 1 = 0 = 1 = 1 1 1 1 = = 0
–   Pseudo 0.7c2680+18
−18		(−59)18 − 10
(+12−4=12)
64.3%
18.0 / 28
100.0%
+29
59.7%
1263
0.87
754
= 1 = = = = 1 1 = = 0 = = 0 0 1 = 1 1 1 1 0 1 = 1 = 1 1
–   Aristarch 4.502671+18
−18		(−68)16 − 10
(+13−7=6)
61.5%
16.0 / 26
100.0%
+14
57.6%
1654
0.75
952
1 1 0 0 = = 1 = 1 = 1 1 0 = 1 1 0 1 1 1 0 1 0 = 0 1
–   Booot 4.13.12668+18
−18		(−71)14.5 − 7.5
(+11−4=7)
65.9%
14.5 / 22
100.0%
+35
61.2%
1552
0.60
950
1 1 = 1 1 0 1 = 1 = = = 1 0 = 0 1 1 0 1 1 =
–   Crafty 21.5 64-bit PS2652+17
−17		(−87)11 − 13
(+8−10=6)
45.8%
11.0 / 24
100.0%
−114
56.6%
1635
0.76
925
0 0 = = 1 1 0 1 = 0 1 0 1 0 0 1 1 = 0 0 = = 0 1
–   The Baron 1.8.12651+18
−18		(−88)6 − 5
(+5−4=2)		54.5%
6.0 / 11
100.0%
−4956.2%
780
0.84
438
= 1 1 1 = 0 0 1 0 0 1
594 games in total: 213 wins, 189 losses, 192 draws (32.3%), score: 52.0%
Average opponent: −14.4 (2724.6), average distance to opponent: 49.7

Performance

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

Perf = C − 0.012 [±0.363] * 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