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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Parrot 070722 WB#125  (2161+17
−17		)Quote
Author: Johanes Suhardjo (USA) Released: 2007-07-22Link: Homepage
Issues with this engine: When playing against an engine with uneven time allocation, like those with book move counting bug (such as Matant 5.04), this engine also starts losing on time.
This is the only Parrot version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Latista (Sinobyl) 1.52289+16
−16		(+128)9.5 − 22.5
(+8−21=3)
29.7%
9.5 / 32
0.0%
−40
53.9%
2233
1.04
1203
1 0 0 0 0 1 = 1 1 0 0 1 = 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 = 1
–   Madeleine 0.22285+15
−15		(+124)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
0.0%
+139
51.1%
2707
1.16
1384
1 1 1 = 0 = 0 0 1 0 0 = 1 0 1 = 0 = 1 1 0 1 0 1 1 1 0 = 1 0 0 =
–   Chispa 4.0.32273+14
−14		(+112)9 − 23
(+2−16=14)
28.1%
9.0 / 32
0.0%
−25
54.9%
1306
0.95
717
= = = = 0 0 0 0 = 0 1 0 = 0 = 0 0 1 = 0 = 0 0 0 = = 0 = = 0 0 =
–   Uralochka 1.1b2272+18
−18		(+111)8 − 24
(+6−22=4)
25.0%
8.0 / 32
0.0%
−91
48.8%
2369
1.01
1155
= 1 0 = 0 0 0 0 0 = 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 = 0
–   Atlas 2.202271+17
−17		(+110)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
0.0%
+121
  
0 1 = 1 = 1 0 0 0 1 0 = 0 0 = 0 1 1 0 = 0 1 = 0 1 1 1 = 1 1 1 0
–   Genesis 2.02247+16
−16		(+86)9 − 23
(+5−19=8)
28.1%
9.0 / 32
0.0%
−72
52.5%
2089
0.87
1096
= 0 0 0 0 1 = 0 = 0 1 1 = = 0 0 0 1 1 0 0 = 0 0 0 0 0 = 0 0 = 0
–   Lime 662241+18
−18		(+80)12.5 − 19.5
(+7−14=11)
39.1%
12.5 / 32
0.0%
+6
51.8%
1896
0.84
983
0 = 0 = = = 0 1 1 0 = 0 1 1 0 = 0 0 0 = 0 = = 1 1 1 0 0 0 0 = =
–   InmiChess 3.06N2241+15
−15		(+80)13.5 − 18.5
(+11−16=5)
42.2%
13.5 / 32
0.0%
+21
52.3%
2316
1.13
1211
0 = 0 0 0 1 0 1 0 0 1 = 1 = = 1 0 0 1 1 1 0 0 = 0 0 0 0 1 1 0 1
–   Nesik 0.7.0 alpha2237+16
−16		(+76)12 − 20
(+8−16=8)
37.5%
12.0 / 32
0.0%
−12
50.5%
1724
1.00
871
= 1 0 0 0 = 1 = 0 0 = 0 0 1 0 1 1 0 = = 0 0 1 = 0 0 1 0 = 1 0 0
–   NagaSkaki 5.122232+18
−18		(+71)17.5 − 14.5
(+13−10=9)
54.7%
17.5 / 32
0.0%
+104
53.4%
2163
1.25
1156
0 1 = = 0 0 1 1 1 1 0 0 0 = = 1 = 0 1 0 1 = 0 = 1 = 1 1 1 0 1 =
–   Sunsetter C10.3 64-bit JA2232+16
−16		(+71)10 − 22
(+8−20=4)
31.3%
10.0 / 32
0.0%
−77
51.3%
1968
1.20
1009
0 0 0 1 0 0 0 0 0 0 = 0 0 = 1 0 1 1 0 0 1 = 1 = 0 0 1 0 0 0 0 1
–   Alarm 0.93.12226+16
−16		(+65)12.5 − 19.5
(+10−17=5)
39.1%
12.5 / 32
0.0%
−19
54.4%
2350
1.30
1278
1 0 0 = = 0 0 0 0 = 1 0 = 1 1 0 1 0 1 0 0 = 0 1 0 1 0 0 1 0 0 1
–   Fortress 1.622216+15
−15		(+55)14 − 18
(+11−15=6)
43.8%
14.0 / 32
0.0%
+8
51.1%
2027
1.40
1035
1 = 0 = = 0 1 1 0 1 0 0 0 = = 0 1 1 1 0 0 1 0 1 0 0 0 0 = 1 1 0
–   WJChess 1.642215+16
−16		(+54)16.5 − 15.5
(+14−13=5)
51.6%
16.5 / 32
0.0%
+67
48.7%
2519
1.39
1226
0 0 0 0 1 = 1 1 1 0 1 0 1 = = 0 1 1 1 0 0 1 1 0 1 1 = 0 0 1 0 =
–   Gk 0.90 64-bit JA2194+16
−16		(+33)6 − 26
(+3−23=6)
18.8%
6.0 / 32
0.1%
−212
48.3%
2358
1.19
1139
0 0 0 0 = 0 0 1 = 0 0 0 0 = 0 0 0 0 0 = 0 = 1 0 = 0 0 1 0 0 0 0
–   Alf 1.09 JA2193+17
−17		(+32)14 − 18
(+10−14=8)
43.8%
14.0 / 32
0.2%
−15
46.5%
2257
0.98
1049
= 0 1 0 = 0 = 0 1 1 = 1 1 0 1 0 0 1 0 0 1 0 = 0 0 = = 1 = 1 0 0
–   Clarabit 1.00 64-bit2193+18
−18		(+32)16 − 16
(+13−13=6)
50.0%
16.0 / 32
0.4%
+30
48.2%
2594
1.27
1250
1 1 1 0 0 1 0 = = 1 0 0 1 0 1 0 1 = 0 0 0 = = 1 0 1 1 = 0 1 1 0
–   Ghost 0.142189+17
−17		(+28)13.5 − 18.5
(+11−16=5)
42.2%
13.5 / 32
0.9%
−33
50.0%
2332
1.37
1167
0 = 1 1 1 1 0 0 0 0 0 1 0 0 = 0 = 0 0 1 1 1 1 0 = 0 = 0 1 0 0 1
–   Wing 2.0a2179+16
−16		(+18)19 − 13
(+17−11=4)
59.4%
19.0 / 32
5.0%
+91
52.6%
2201
0.98
1158
0 0 0 = = 1 0 1 0 1 1 0 1 1 = = 1 1 0 1 1 0 1 1 0 1 1 0 1 1 1 0
–   Uragano 3D 0.872174+16
−16		(+13)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
11.6%
+2
49.5%
2497
1.10
1235
1 0 1 0 0 1 0 0 = = 0 = = 0 1 1 1 0 0 1 0 1 1 = 1 0 1 0 = = 1 0
–   Matheus 2.32144+15
−15		(−17)16.5 − 15.5
(+12−11=9)
51.6%
16.5 / 32
93.7%
−4
55.4%
1933
1.36
1070
0 0 0 1 = 1 0 0 = 1 1 0 = 1 0 0 1 = 1 0 = 1 1 = = 0 1 = = 1 0 1
–   Bodo 0.2b2137+15
−15		(−24)18 − 14
(+14−10=8)
56.3%
18.0 / 32
98.6%
+20
50.0%
1622
0.85
811
= 0 1 0 1 0 1 = 0 1 1 0 1 1 1 = 0 = 1 1 = = 0 1 1 1 1 0 = 0 0 =
–   Monarch 1.72131+16
−16		(−30)17.5 − 14.5
(+14−11=7)
54.7%
17.5 / 32
99.6%
+5
47.7%
2029
1.54
967
0 1 0 = 1 = 0 = = = 0 1 1 1 0 0 1 1 1 1 0 0 = 0 1 = 1 0 1 1 0 1
–   Bestia 0.902122+15
−15		(−39)18.5 − 13.5
(+14−9=9)
57.8%
18.5 / 32
100.0%
+16
51.7%
2054
0.98
1062
= = 1 = 1 0 0 0 1 1 = 0 0 1 = 1 0 1 1 1 0 = 0 0 = 1 = 1 = 1 1 1
–   Ax 0.82119+15
−15		(−42)17.5 − 14.5
(+15−12=5)
54.7%
17.5 / 32
100.0%
−4
  
1 1 0 0 1 0 1 0 1 1 = 1 1 = 1 1 0 1 0 = 1 1 0 = 1 = 1 0 0 0 0 0
–   Gerbil 02 64-bit JA2118+18
−18		(−43)17 − 15
(+13−11=8)
53.1%
17.0 / 32
100.0%
−23
46.7%
1962
1.26
917
= = = 1 = = 1 0 1 0 0 0 0 0 1 1 = 0 1 1 1 1 1 0 = 0 = 1 0 1 0 1
–   BigLion 2.23x2117+17
−17		(−44)17.5 − 14.5
(+14−11=7)
54.7%
17.5 / 32
100.0%
−9
50.1%
2190
0.97
1098
1 0 0 = 1 0 1 0 1 1 = 0 1 1 0 1 1 1 0 0 1 = 1 = = 1 0 1 = 0 = 0
–   RDChess 3.232117+16
−16		(−44)17.5 − 14.5
(+13−10=9)
54.7%
17.5 / 32
100.0%
−11
54.9%
1714
0.95
941
1 = 1 0 0 1 = = 1 = 0 1 0 0 1 = 1 1 0 = 1 1 1 0 = 1 = 1 = 0 0 0
–   DelphiMax 2.92102+16
−16		(−59)22 − 10
(+20−8=4)
68.8%
22.0 / 32
100.0%
+89
54.0%
2724
1.41
1471
1 0 1 = 0 = 1 1 0 1 1 1 1 1 1 0 1 0 1 1 1 1 = 0 1 0 0 1 = 1 1 1
–   Armageddon 2.3082098+17
−17		(−63)20 − 12
(+16−8=8)
62.5%
20.0 / 32
100.0%
+25
51.0%
1767
0.89
901
1 = 1 0 = 0 = 0 1 1 1 1 1 0 1 = 0 0 1 = 1 1 1 = 1 1 1 = 1 0 = 0
–   Requiem 0.532084+15
−15		(−77)19 − 13
(+13−7=12)
59.4%
19.0 / 32
100.0%
−16
53.2%
1298
1.03
690
0 = 0 1 0 1 = = = 1 1 0 1 = = 1 1 0 = 1 1 1 1 0 = = = = 0 = 1 1
–   Small Potato 0.6.12082+16
−16		(−79)21 − 11
(+19−9=4)
65.6%
21.0 / 32
100.0%
+44
45.3%
2526
1.38
1145
1 1 1 1 1 0 1 0 = 1 1 = 0 1 1 0 1 1 0 0 1 1 1 0 0 = 0 1 = 1 1 1
–   Elephant 1.062075+16
−16		(−86)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
−30
53.9%
1743
1.19
939
1 1 1 = 0 0 = 1 = 0 1 = = 0 0 1 0 0 1 1 0 0 1 = 1 1 1 0 = 1 1 1
–   La Dame Blanche 2.0c2070+19
−19		(−91)16.5 − 15.5
(+12−11=9)
51.6%
16.5 / 32
100.0%
−81
52.0%
1551
1.55
806
0 = 0 = 0 1 0 = 1 = 1 0 = = 0 1 1 0 1 1 1 0 0 1 = 1 1 1 = = 0 0
–   Cilian 4.142069+16
−16		(−92)21.5 − 10.5
(+17−6=9)
67.2%
21.5 / 32
100.0%
+26
  
1 = 1 1 1 1 1 = 1 1 = 0 1 = 1 1 1 0 = 0 = = 1 = 1 0 1 0 = 0 1 1
–   Etude 0.1.22063+19
−19		(−98)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
100.0%
−16
49.5%
2067
1.04
1023
= = 1 1 0 1 1 0 1 1 = 0 1 1 1 0 1 1 = 0 1 = 1 1 = 0 = 0 0 0 1 1
–   Gullydeckel 2.16pl12062+19
−19		(−99)21 − 11
(+19−9=4)
65.6%
21.0 / 32
100.0%
+25
50.9%
2366
1.10
1204
0 = 1 1 = 1 1 1 0 = 1 1 1 1 1 1 1 1 = 1 0 1 1 1 0 0 0 1 1 0 0 0
–   JanWillem 1.132062+16
−16		(−99)19.5 − 12.5
(+17−10=5)
60.9%
19.5 / 32
100.0%
−15
49.1%
2326
1.53
1143
1 = 1 1 1 0 1 1 0 = 0 0 1 1 1 1 1 = 1 1 1 0 = 0 0 0 1 0 1 0 = 1
–   Marvin 1.3.02054+16
−16		(−107)22 − 10
(+20−8=4)
68.8%
22.0 / 32
100.0%
+41
54.7%
2200
1.23
1204
1 1 1 1 0 0 1 = = 1 1 1 0 1 0 1 1 1 = = 1 1 0 1 0 1 1 1 0 0 1 1
–   SSEChessII 2.05 DC2049+17
−17		(−112)13.5 − 18.5
(+11−16=5)
42.2%
13.5 / 32
100.0%
−169
50.0%
1977
1.29
988
1 0 1 1 0 0 0 0 0 0 0 = 1 1 1 0 0 = 1 0 1 0 1 = 1 0 0 0 1 = = 0
–   Faile 1.4.42042+15
−15		(−119)20 − 12
(+16−8=8)
62.5%
20.0 / 32
100.0%
−31
51.0%
1913
0.96
976
= 1 0 1 1 = 1 0 0 1 = 0 = 0 1 1 = 1 0 1 1 1 1 1 0 1 = = 0 1 = 1
–   Micro-Max 4.8 PIV DM2028+17
−17		(−133)25.5 − 6.5
(+24−5=3)
79.7%
25.5 / 32
100.0%
+118
74.8%
2539
1.58
1899
1 1 1 1 = 1 1 0 1 1 1 1 1 1 = 1 1 1 1 1 1 0 1 0 0 1 = 1 1 1 1 0
1344 games in total: 539 wins, 522 losses, 283 draws (21.1%), score: 50.6%
Average opponent: −5.2 (2155.8), average distance to opponent: 70.9

Performance

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

Perf = C + 0.035 [±0.269] * 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