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
Small Potato 0.6.1 WB#137  (2082+16
−16		)Quote
Author: Alejandro Dubrovsky (Australia) Released: 2003-09-25Link: Homepage
This engine is stable and runs without issues.
This is the only Small Potato version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Chispa 4.0.32273+14
−14		(+191)12.5 − 19.5
(+8−15=9)
39.1%
12.5 / 32
0.0%
+115
55.3%
1773
0.97
980
0 0 = 0 0 0 = 1 = 0 1 0 1 0 1 = 0 = 0 = 1 0 = 0 0 1 = 1 0 0 1 =
–   Atlas 2.202271+17
−17		(+189)7 − 25
(+5−23=4)
21.9%
7.0 / 32
0.0%
−40
  
1 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 = 0 0 0 0 = 0 0 = 0 0 0 0 0 1 =
–   Genesis 2.02247+16
−16		(+165)10.5 − 21.5
(+5−16=11)
32.8%
10.5 / 32
0.0%
+51
56.1%
2221
0.65
1245
= 1 = 0 0 0 0 = 0 = 0 = 0 0 0 = 0 0 = 1 1 0 1 = = 1 0 0 = 0 = 0
–   InmiChess 3.06N2241+15
−15		(+159)11.5 − 20.5
(+11−20=1)
35.9%
11.5 / 32
0.0%
+37
50.0%
2523
1.14
1261
0 0 1 0 0 1 0 1 0 0 1 0 0 0 0 1 1 1 0 0 1 0 1 0 0 = 0 0 0 1 0 1
–   Nesik 0.7.0 alpha2237+16
−16		(+155)6 − 26
(+4−24=4)
18.8%
6.0 / 32
0.0%
−105
53.5%
2432
1.05
1302
0 0 0 0 1 0 0 = 0 0 0 0 0 = 0 1 0 0 0 1 0 0 = 0 0 0 1 0 0 0 0 =
–   Sunsetter C10.3 64-bit JA2232+16
−16		(+150)12 − 20
(+8−16=8)
37.5%
12.0 / 32
0.0%
+61
50.1%
1848
0.77
926
0 = = = 1 0 = 0 0 1 0 0 0 1 0 0 1 1 = 0 = 0 1 1 1 0 0 = 0 0 0 =
–   Alarm 0.93.12226+16
−16		(+144)10 − 22
(+7−19=6)
31.3%
10.0 / 32
0.0%
+2
54.5%
2322
1.45
1266
0 0 0 0 1 0 1 = 0 1 0 0 0 0 1 0 0 1 = 0 0 0 0 = 1 = 0 1 = 0 = 0
–   Fortress 1.622216+15
−15		(+134)13.5 − 18.5
(+8−13=11)
42.2%
13.5 / 32
0.0%
+82
53.3%
1806
0.95
963
= 0 0 = = = 0 1 1 1 0 0 = 0 1 0 = = 1 1 = 1 = 0 0 0 1 0 0 = 0 =
–   WJChess 1.642215+16
−16		(+133)11 − 21
(+7−17=8)
34.4%
11.0 / 32
0.0%
+21
54.0%
2618
1.15
1415
0 = = 0 0 0 0 0 1 = 0 1 1 0 = = 0 = = 0 = 0 1 0 0 0 0 1 1 0 1 0
–   Gk 0.90 64-bit JA2194+16
−16		(+112)8 − 24
(+5−21=6)
25.0%
8.0 / 32
0.0%
−80
57.5%
1975
0.57
1135
0 = 0 0 0 0 = 0 1 0 = 0 0 1 = 0 = 1 0 0 0 = 0 0 0 1 1 0 0 0 0 0
–   Alf 1.09 JA2193+17
−17		(+111)7.5 − 24.5
(+4−21=7)
23.4%
7.5 / 32
0.0%
−87
53.0%
2217
0.95
1174
0 = 1 = 0 1 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 = 0 = 0 0 0 0 = = =
–   Clarabit 1.00 64-bit2193+18
−18		(+111)9.5 − 22.5
(+6−19=7)
29.7%
9.5 / 32
0.0%
−39
49.6%
2406
1.08
1193
0 = 1 0 0 0 = 0 0 0 = 0 1 0 = 0 0 1 0 0 1 = 0 0 0 0 0 = 1 = 0 1
–   Ghost 0.142189+17
−17		(+107)12 − 20
(+10−18=4)
37.5%
12.0 / 32
0.0%
+6
50.4%
2260
1.20
1138
1 1 = = 0 0 0 1 0 0 1 0 0 0 0 1 = 0 = 1 0 0 0 0 0 1 1 0 0 1 0 1
–   Wing 2.0a2179+16
−16		(+97)17 − 15
(+13−11=8)
53.1%
17.0 / 32
0.0%
+118
53.9%
1947
0.94
1049
0 = 0 1 1 = 0 0 = 1 1 = 1 0 = 1 = 0 1 = 0 1 0 1 1 1 0 1 = 1 0 0
–   Uragano 3D 0.872174+16
−16		(+92)11 − 21
(+7−17=8)
34.4%
11.0 / 32
0.0%
−21
50.5%
2069
0.80
1045
0 1 0 0 = 0 0 0 0 = = = 1 1 1 0 0 1 0 = 1 0 0 0 0 = 0 0 = = 0 1
–   Parrot 0707222161+17
−17		(+79)11 − 21
(+9−19=4)
34.4%
11.0 / 32
0.0%
−44
45.3%
2526
1.38
1145
0 0 0 0 0 1 0 1 = 0 0 = 1 0 0 1 0 0 1 1 0 0 0 1 1 = 1 0 = 0 0 0
–   Matheus 2.32144+15
−15		(+62)13.5 − 18.5
(+8−13=11)
42.2%
13.5 / 32
0.0%
+11
57.9%
1772
0.47
1026
0 0 0 = 0 0 0 = = 1 = 0 = = 1 = = 0 = = 1 0 1 0 1 1 0 = 0 0 1 1
–   Bodo 0.2b2137+15
−15		(+55)10.5 − 21.5
(+7−18=7)
32.8%
10.5 / 32
0.0%
−72
53.2%
1740
0.65
926
1 1 1 0 = 1 = 0 0 1 = 0 0 0 0 = 0 0 0 0 0 0 = = = 0 0 1 0 0 1 0
–   Monarch 1.72131+16
−16		(+49)13.5 − 18.5
(+10−15=7)
42.2%
13.5 / 32
0.0%
−9
52.6%
2511
1.05
1320
= 0 1 = 0 1 = 0 1 = = 1 0 1 1 0 0 0 0 0 1 1 0 1 1 0 0 0 = 0 = 0
–   Bestia 0.902122+15
−15		(+40)15 − 17
(+12−14=6)
46.9%
15.0 / 32
0.0%
+18
54.4%
2285
0.91
1243
0 = 1 0 = = 1 0 0 0 = 1 1 = 1 0 1 1 0 0 1 1 0 0 0 0 1 0 1 0 1 =
–   Ax 0.82119+15
−15		(+37)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
0.0%
+25
  
1 1 = 0 = 1 1 = 1 0 0 0 0 0 0 0 0 1 = 1 1 1 0 0 0 = 1 0 1 1 = =
–   Gerbil 02 64-bit JA2118+18
−18		(+36)17 − 15
(+12−10=10)
53.1%
17.0 / 32
0.1%
+55
53.1%
1880
0.49
999
1 1 0 0 = = 1 = 0 = 0 1 1 1 = 0 1 1 0 1 = 1 = 0 0 = 1 = 0 0 1 =
–   BigLion 2.23x2117+17
−17		(+35)12 − 20
(+9−17=6)
37.5%
12.0 / 32
0.1%
−60
53.8%
2228
0.65
1198
0 = 0 = 0 0 0 = 1 1 0 0 = = 0 = 1 1 1 0 0 0 0 0 1 0 0 1 1 1 0 0
–   RDChess 3.232117+16
−16		(+35)12 − 20
(+8−16=8)
37.5%
12.0 / 32
0.1%
−52
53.4%
2274
1.26
1214
1 0 = = 1 0 0 0 = 0 0 0 0 = 1 1 0 0 = 0 1 = 1 0 0 0 1 0 = = 1 0
–   DelphiMax 2.92102+16
−16		(+20)13 − 19
(+11−17=4)
40.6%
13.0 / 32
3.1%
−54
55.6%
2903
1.07
1613
0 0 0 0 1 0 0 1 0 0 0 0 = 0 1 1 1 0 0 1 = 0 1 = = 1 0 0 0 1 1 1
–   Armageddon 2.3082098+17
−17		(+16)17 − 15
(+13−11=8)
53.1%
17.0 / 32
7.4%
+38
53.0%
2188
0.75
1159
0 1 1 1 1 = 1 0 0 = 1 1 0 0 = = 0 0 = 1 1 0 = 0 0 0 1 = = 1 1 1
–   Requiem 0.532084+15
−15		(+2)14 − 18
(+6−10=16)
43.8%
14.0 / 32
44.7%
−34
53.8%
1209
0.63
651
= 0 = = 1 0 = = 0 0 0 0 0 1 = = 1 = = 0 1 = 1 0 = = = = = 1 0 =
–   Elephant 1.062075+16
−16		(−7)16.5 − 15.5
(+12−11=9)
51.6%
16.5 / 32
74.9%
+2
52.8%
1992
0.79
1052
1 0 = 0 = 1 0 0 0 0 = 1 0 = = 1 0 0 = 0 1 1 1 1 1 = = = 1 1 1 0
–   La Dame Blanche 2.0c2070+19
−19		(−12)19.5 − 12.5
(+17−10=5)
60.9%
19.5 / 32
84.8%
+72
51.5%
1902
1.04
979
= 0 0 1 1 0 1 0 1 = 0 1 0 1 1 1 1 1 0 0 = 1 = = 0 1 1 0 1 1 1 1
–   Cilian 4.142069+16
−16		(−13)20.5 − 11.5
(+13−4=15)
64.1%
20.5 / 32
89.5%
+70
  
1 1 1 = = 1 0 = = = = 1 = 1 1 1 = 1 1 = = 1 = = = 1 0 = = 0 1 0
–   Etude 0.1.22063+19
−19		(−19)13.5 − 18.5
(+10−15=7)
42.2%
13.5 / 32
95.1%
−76
51.1%
2339
0.57
1196
= = = 0 1 0 0 0 1 1 0 1 0 = 1 0 = 0 0 1 0 1 1 = 0 0 1 0 = 1 0 0
–   Gullydeckel 2.16pl12062+19
−19		(−20)18 − 14
(+14−10=8)
56.3%
18.0 / 32
95.8%
+25
52.4%
2311
0.59
1211
0 0 1 = 0 = 1 = 0 0 1 = = = 1 1 1 0 = 1 1 0 = 1 1 1 0 0 0 1 1 1
–   JanWillem 1.132062+16
−16		(−20)17 − 15
(+14−12=6)
53.1%
17.0 / 32
97.3%
+5
55.7%
2080
0.75
1158
1 0 0 = 1 = 1 1 0 0 1 1 0 0 0 1 0 1 = = 0 1 1 1 1 0 = 1 0 1 = 0
–   Marvin 1.3.02054+16
−16		(−28)15 − 17
(+12−14=6)
46.9%
15.0 / 32
99.7%
−51
57.4%
2190
0.75
1257
= = 1 0 1 1 = 0 1 1 1 0 0 0 = 1 1 1 0 = 0 1 0 = 1 0 1 0 0 0 0 0
–   Matant 5.042053+17
−17		(−29)14.5 − 17.5
(+12−15=5)
45.3%
14.5 / 32
99.6%
−65
50.6%
1917
0.98
970
1 0 0 = 0 = 1 1 0 0 0 = 0 0 0 1 1 1 0 1 1 0 = 1 1 0 0 1 = 0 0 1
–   SSEChessII 2.05 DC2049+17
−17		(−33)18 − 14
(+13−9=10)
56.3%
18.0 / 32
99.9%
+11
51.8%
2229
0.88
1154
= = 1 = 0 = 1 0 0 0 1 1 0 0 = = 0 = 0 1 0 1 1 1 1 1 1 = 1 1 = =
–   Faile 1.4.42042+15
−15		(−40)17.5 − 14.5
(+12−9=11)
54.7%
17.5 / 32
100.0%
−6
54.5%
2297
0.49
1251
0 = 1 0 = 1 1 = = 1 = 1 = = = 0 1 0 1 0 1 0 = 0 1 0 0 1 = 1 = 1
–   Smash 1.0.32036+17
−17		(−46)22.5 − 9.5
(+20−7=5)
70.3%
22.5 / 32
100.0%
+111
55.9%
2367
0.70
1322
1 1 0 1 0 0 = 1 1 0 1 = 1 1 1 = 1 = 1 1 1 1 0 = 0 1 1 0 1 1 1 1
–   Micro-Max 4.8 PIV DM2028+17
−17		(−54)12.5 − 19.5
(+7−14=11)
39.1%
12.5 / 32
100.0%
−125
78.0%
2134
0.61
1664
0 0 0 0 = 0 1 0 = = 0 0 = 1 0 = 0 1 = = 0 = = 0 1 = = 1 0 1 1 0
–   Sharper 0.172022+16
−16		(−60)18.5 − 13.5
(+14−9=9)
57.8%
18.5 / 32
100.0%
−7
52.6%
2318
0.88
1220
1 0 = 1 = 1 0 1 1 1 = 1 = 0 1 1 1 = = 0 0 = 0 1 1 = = 0 1 0 1 0
–   Mustang 4.972021+17
−17		(−61)17.5 − 14.5
(+9−6=17)
54.7%
17.5 / 32
100.0%
−33
50.8%
1080
0.94
549
= 1 = = 1 0 1 = = = 1 0 0 = = 1 1 = = = 1 1 = 1 = 0 = = = = 0 0
–   Rival UCI 1.182021+17
−17		(−61)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
−3
50.9%
2247
0.81
1144
0 1 = = = 1 1 0 0 1 1 1 0 = 1 0 0 1 = 1 0 0 1 0 1 0 1 1 1 = = 1
–   BibiChess 0.52007+16
−16		(−75)25 − 7
(+22−4=6)
78.1%
25.0 / 32
100.0%
+142
  
1 1 1 1 = 1 = 1 = = = 1 1 1 1 1 1 1 0 1 0 1 1 1 1 1 0 0 1 = 1 1
–   IACH 0.56z1995+18
−18		(−87)21 − 11
(+19−9=4)
65.6%
21.0 / 32
100.0%
+37
65.4%
2662
0.72
1742
0 1 1 0 0 1 0 1 1 1 = = 1 1 1 0 1 1 0 1 1 1 = 1 0 1 = 1 1 1 0 0
–   Heracles 0.6.161993+19
−19		(−89)21.5 − 10.5
(+16−5=11)
67.2%
21.5 / 32
100.0%
+25
51.2%
2282
0.93
1168
1 = 1 1 = 1 1 1 1 1 = 1 1 = 0 = 1 1 0 1 = = 0 = = 0 1 0 = 1 = 1
–   Clueless 1.41990+18
−18		(−92)17.5 − 14.5
(+16−13=3)
54.7%
17.5 / 32
100.0%
−54
52.2%
2416
1.12
1261
1 1 0 1 0 1 = 1 0 1 0 1 0 1 0 1 1 0 0 1 1 1 0 = 0 1 0 1 = 0 0 1
–   Warrior 1.0.31987+17
−17		(−95)21.5 − 10.5
(+20−9=3)
67.2%
21.5 / 32
100.0%
+46
53.2%
2635
0.80
1403
0 1 1 1 = 1 0 1 1 1 1 1 = 0 1 0 1 1 0 1 1 1 1 0 0 1 = 0 0 1 1 1
–   Morphy 3.221974+17
−17		(−108)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
−50
55.1%
2288
3.77
1261
= 0 = 0 1 0 0 0 1 = 0 1 1 1 0 1 1 0 1 1 1 = = = 1 1 = 0 0 1 1 1
–   Eagle 0.7.51973+20
−20		(−109)21 − 11
(+18−8=6)
65.6%
21.0 / 32
100.0%
+8
50.6%
2510
0.69
1271
0 = 1 1 1 = 1 1 1 0 1 = 1 0 = 0 1 0 1 0 = 1 1 1 1 0 1 = 1 1 0 1
–   Soldat 0.25b1873+17
−17		(−209)24 − 8
(+21−5=6)
75.0%
24.0 / 32
100.0%
−16
53.1%
2081
0.64
1104
1 1 1 = 1 1 0 1 = 1 0 = 1 1 1 = 1 0 0 1 1 1 1 1 = 1 1 = 1 1 0 1
–   Elf 1.3.01820+18
−18		(−262)25 − 7
(+22−4=6)
78.1%
25.0 / 32
100.0%
−44
52.0%
1985
0.73
1033
0 1 1 1 1 1 1 = 1 1 1 1 = 1 1 1 1 1 1 0 1 0 1 1 = 1 = = 0 = 1 1
–   Laurifer 1.01815+18
−18		(−267)27 − 5
(+26−4=2)
84.4%
27.0 / 32
100.0%
+46
53.6%
2123
0.74
1137
1 1 1 1 1 0 1 1 1 1 1 1 0 1 1 1 0 1 1 = 1 1 1 1 0 1 = 1 1 1 1 1
–   Adamant 1.71790+19
−19		(−292)26.5 − 5.5
(+25−4=3)
82.8%
26.5 / 32
100.0%
−7
54.6%
2433
0.87
1328
1 1 1 1 1 0 1 1 0 1 1 1 1 1 1 = 0 1 1 1 0 1 1 = 1 1 = 1 1 1 1 1
1696 games in total: 639 wins, 673 losses, 384 draws (22.6%), score: 49.0%
Average opponent: +6.2 (2088.2), average distance to opponent: 88.8

Performance

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

Perf = C + 0.022 [±0.143] * 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