KCEC
(Kirr's Chess Engine Comparison)
A tournament of original free chess engines
August 14, 2010
Testing summary:
Total: 89,765 games
played by 153 programs
937 CPU days (X2 4600+)

White wins: 36,316 (40.5%)
Black wins: 30,946 (34.5%)
Draws: 22,503 (25.1%)
White score: 53.0%

Engine Details

Options
Show each game results
Patzer 3.80 UCI#68–69  (2458+17
−17		)Quote
Author: Roland Pfister (Germany) Released: 2006-09-13Link: superchessengine.com
This engine is stable and runs without issues.
This is the only Patzer version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Gaia 3.5 64-bit2539+17
−17		(+81)12 − 20
(+7−15=10)
37.5%
12.0 / 32
0.0%
−5
53.7%
1791
1.21
962
0 1 1 = 1 1 = 0 0 0 = 0 0 0 = = 0 1 = 0 0 = 0 0 0 1 = = 0 = 1 0
–   Quark 2.352538+16
−16		(+80)11.5 − 20.5
(+8−17=7)
35.9%
11.5 / 32
0.0%
−25
54.6%
2010
1.11
1098
1 0 0 0 1 1 0 0 = 1 0 = 1 0 = 0 1 0 0 0 0 0 = = 0 = 0 1 = 0 1 0
–   King of Kings 2.562536+18
−18		(+78)14.5 − 17.5
(+12−15=5)
45.3%
14.5 / 32
0.0%
+40
52.6%
2332
0.96
1226
1 1 1 1 = 0 0 0 1 0 = 0 0 0 1 0 0 1 0 1 = = 1 1 0 1 0 0 0 1 0 =
–   LambChop 10.992530+17
−17		(+72)14.5 − 17.5
(+11−14=7)
45.3%
14.5 / 32
0.0%
+38
52.0%
1954
1.14
1017
0 0 1 0 = 0 = 1 0 1 0 0 1 0 1 = 1 1 1 0 = = 1 = 1 0 0 0 0 0 1 =
–   Dragon 4.62521+16
−16		(+63)18 − 14
(+13−9=10)
56.3%
18.0 / 32
0.0%
+105
53.7%
1830
0.90
983
= 0 1 0 1 = 0 = 1 0 1 = 0 = = 1 1 0 0 0 = = 1 1 1 1 = 1 0 1 1 =
–   Nejmet 3.072519+16
−16		(+61)18 − 14
(+14−10=8)
56.3%
18.0 / 32
0.0%
+107
53.4%
2292
0.98
1225
= = 1 1 0 0 = 0 0 1 1 = 0 1 1 0 1 0 = = 0 = 0 = 1 1 1 1 0 1 1 1
–   Snitch 1.6.2 32-bit2519+15
−15		(+61)12.5 − 19.5
(+9−16=7)
39.1%
12.5 / 32
0.0%
−20
52.7%
1940
1.13
1023
0 1 0 1 0 0 0 0 0 = 0 1 0 = 0 1 0 = 0 = = 0 = 0 = 1 0 0 1 1 1 1
–   KnightDreamer 3.32496+17
−17		(+38)16 − 16
(+12−12=8)
50.0%
16.0 / 32
0.1%
+39
54.0%
1713
1.13
925
0 1 0 1 1 = 1 0 = 1 0 = = = 0 1 1 = 1 = 0 1 0 0 1 0 0 0 1 0 = 1
–   Amy 0.8.7b DC2493+17
−17		(+35)8.5 − 23.5
(+6−21=5)
26.6%
8.5 / 32
0.2%
−150
52.7%
2134
0.89
1124
= 0 0 0 0 0 1 0 = 1 0 0 0 0 0 1 1 0 0 0 0 1 = 0 = = 0 1 0 0 0 0
–   Francesca MAD 0.13 Nobook2493+19
−19		(+35)16 − 16
(+12−12=8)
50.0%
16.0 / 32
0.3%
+33
59.8%
1953
0.90
1167
= 1 1 0 0 1 1 1 = = 0 = 0 = 1 0 = 1 1 0 = = 0 0 1 1 0 1 0 0 1 0
–   Leila 0.53h2483+17
−17		(+25)13 − 19
(+9−15=8)
40.6%
13.0 / 32
1.9%
−44
51.7%
2001
1.04
1034
= = = 1 1 0 1 0 0 1 = 1 0 1 0 = = 0 0 = 0 0 = 1 0 0 0 0 0 1 1 0
–   Diablo 0.5.1 JA2478+17
−17		(+20)17.5 − 14.5
(+15−12=5)
54.7%
17.5 / 32
5.0%
+57
50.3%
2384
1.04
1199
0 = 0 1 1 0 1 0 1 0 0 1 1 0 = 0 1 = = 0 0 = 1 1 1 1 1 1 0 0 1 1
–   PostModernist 10162475+17
−17		(+17)13.5 − 18.5
(+8−13=11)
42.2%
13.5 / 32
7.3%
−32
56.1%
1746
0.95
979
= 0 0 0 = 0 1 1 0 1 = 0 = 1 0 0 = = 0 0 = 1 0 = 0 = = 0 = 1 1 1
–   Comet B682473+15
−15		(+15)11 − 21
(+8−18=6)
34.4%
11.0 / 32
8.7%
−106
52.2%
2004
1.03
1046
1 0 0 0 0 0 = 0 0 = = 0 0 0 = 0 = 1 0 = 0 1 0 0 0 1 0 0 1 1 1 1
–   Djinn 0.925x2472+16
−16		(+14)20 − 12
(+15−7=10)
62.5%
20.0 / 32
12.1%
+101
55.3%
1714
1.29
947
0 = = = = 1 = = = 1 1 1 1 1 1 = 0 1 = 1 1 1 0 1 1 0 0 1 0 0 1 =
–   Sjeng 12.132472+15
−15		(+14)14 − 18
(+9−13=10)
43.8%
14.0 / 32
10.9%
−31
56.6%
1918
0.71
1086
= 1 1 = 0 0 0 = 0 = 0 1 1 = 1 1 0 = 0 0 0 0 1 0 1 = 0 0 = 1 = =
–   Muse 0.899b2472+17
−17		(+14)16 − 16
(+13−13=6)
50.0%
16.0 / 32
11.5%
+16
50.7%
2004
1.31
1017
1 = 0 0 1 1 0 = 0 0 0 = 0 1 1 0 0 1 1 = 1 0 1 = 1 0 1 1 1 0 = 0
–   Der Bringer 1.92458+16
−16		(0)14 − 18
(+9−13=10)
43.8%
14.0 / 32
51.1%
−43
54.4%
1945
0.97
1058
= 0 = 1 1 1 0 0 = 0 1 = 1 = 0 = 1 0 0 0 = 0 0 1 1 = = 0 0 1 0 =
–   The Crazy Bishop 00522455+16
−16		(−3)17 − 15
(+12−10=10)
53.1%
17.0 / 32
58.7%
+18
50.9%
2391
1.05
1218
= = 1 0 1 0 0 1 1 0 = = 0 1 0 = 1 0 0 = 0 1 = 1 1 1 = 1 = = 1 0
–   Gosu 0.162449+17
−17		(−9)13 − 19
(+10−16=6)
40.6%
13.0 / 32
77.7%
−77
50.6%
2356
1.06
1192
1 = 1 0 1 0 0 = 1 0 0 0 0 0 0 = 0 0 1 0 1 1 1 0 1 1 0 = 0 0 = =
–   Phalanx XXII Reborn JA2448+15
−15		(−10)14 − 18
(+10−14=8)
43.8%
14.0 / 32
80.3%
−53
51.0%
2052
1.14
1046
= 0 1 0 1 = 0 1 0 1 0 0 0 1 1 = 1 1 0 0 = 0 = 0 0 0 = 1 = 1 = 0
–   Amateur 2.822446+16
−16		(−12)20.5 − 11.5
(+16−7=9)
64.1%
20.5 / 32
85.5%
+86
49.9%
2071
1.10
1033
1 = 1 1 1 0 = 1 = 0 0 1 1 1 1 0 1 = 1 = = 0 = 1 0 0 = 1 1 1 1 =
–   Betsy 6.51 Nobook2444+16
−16		(−14)17 − 15
(+13−11=8)
53.1%
17.0 / 32
88.6%
+11
55.9%
2085
1.16
1165
1 0 1 = 1 0 = = 1 = 1 0 1 = 1 = 0 = = 1 1 0 0 0 1 0 0 0 0 1 1 1
–   GNU Chess 5.07.9b 64-bit JA2441+17
−17		(−17)21.5 − 10.5
(+18−7=7)
67.2%
21.5 / 32
92.3%
+115
47.8%
2244
0.90
1072
0 1 1 = 0 1 1 1 0 1 1 0 1 1 = = 0 0 0 1 1 = 1 = 1 1 1 1 1 = 1 =
–   Thor's Hammer 2.28 32-bit2417+16
−16		(−41)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
+17
52.8%
2420
1.04
1277
= 1 1 1 0 0 1 0 0 1 1 1 1 1 0 = = 0 1 = 0 1 = 1 1 0 = = 0 1 0 1
–   Arion 1.72411+17
−17		(−47)17.5 − 14.5
(+12−9=11)
54.7%
17.5 / 32
100.0%
−15
56.3%
2095
1.20
1180
0 1 0 0 1 = 1 = 0 0 1 = 0 1 = 0 1 1 1 1 = = 1 0 = = = 1 = 0 = 1
–   AICE 0.99.22407+17
−17		(−51)19.5 − 12.5
(+17−10=5)
60.9%
19.5 / 32
100.0%
+34
48.1%
2067
1.19
994
1 0 0 1 1 1 1 1 = 1 0 0 1 0 0 = 1 1 0 = 0 1 1 0 0 = = 1 1 1 1 1
–   Chezzz 1.0.32405+16
−16		(−53)18.5 − 13.5
(+16−11=5)
57.8%
18.5 / 32
100.0%
+7
51.2%
2022
1.04
1035
1 1 0 1 1 1 1 = = 0 = 0 1 1 0 0 = 1 0 = 0 1 1 1 0 0 1 0 1 0 1 1
–   Resp 0.19 64-bit JA Nobook2398+18
−18		(−60)16 − 16
(+13−13=6)
50.0%
16.0 / 32
100.0%
−58
51.5%
2281
0.91
1175
0 0 1 1 0 = 1 1 1 1 = 0 0 = 0 0 1 0 = 1 1 1 1 = 0 1 0 1 0 0 0 =
–   Averno 0.812389+16
−15		(−69)17 − 15
(+13−11=8)
53.1%
17.0 / 32
100.0%
−45
49.4%
2487
1.04
1228
= 0 1 0 0 1 0 1 0 1 = 0 1 = = = 0 0 0 1 1 0 1 0 1 1 1 = 1 = 1 =
–   Scidlet 3.61 64-bit JA2384+16
−16		(−74)19 − 13
(+14−8=10)
59.4%
19.0 / 32
100.0%
−9
55.0%
1331
1.28
732
1 1 1 = = 0 1 0 = 1 1 = = 0 = = 0 1 1 0 0 0 0 1 1 = 1 = 1 1 = 1
–   KnightX 1.922379+16
−16		(−79)15 − 17
(+11−13=8)
46.9%
15.0 / 32
100.0%
−103
53.4%
1600
1.05
854
0 0 = 0 = = 0 = = 1 0 0 0 1 0 0 0 = 1 1 1 1 = 1 0 1 1 0 0 1 = 1
–   Eeyore 1.482375+16
−16		(−83)19.5 − 12.5
(+14−7=11)
60.9%
19.5 / 32
100.0%
−8
51.0%
1684
1.25
859
= 1 1 = 0 1 = = 1 1 0 0 1 = 0 1 = 0 1 = = 1 = 1 1 1 0 = 1 1 = 0
–   Ayito 0.2.9942363+17
−17		(−95)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
100.0%
+15
51.4%
2470
1.05
1269
1 0 1 0 = = 1 1 1 1 1 0 1 0 1 = 1 0 0 1 1 1 0 0 1 0 1 1 1 = = 1
–   EXchess 5.01 beta 64-bit JA2352+15
−15		(−106)22.5 − 9.5
(+20−7=5)
70.3%
22.5 / 32
100.0%
+55
54.5%
2127
1.36
1159
1 1 1 0 = 0 1 1 1 1 0 1 1 1 1 1 1 1 = 1 0 0 0 = 0 1 = 1 1 1 1 =
–   Esc 1.162338+16
−16		(−120)20 − 12
(+16−8=8)
62.5%
20.0 / 32
100.0%
−28
53.3%
2247
1.07
1198
1 0 = = 1 0 1 0 1 0 0 = 1 = 1 = 1 1 1 1 1 1 0 1 1 = = 1 = 0 0 1
–   ANT 2006-F2325+18
−17		(−133)25 − 7
(+23−5=4)
78.1%
25.0 / 32
100.0%
+100
46.5%
2604
1.11
1211
1 1 = 1 1 0 1 1 0 1 1 1 1 1 1 1 = 0 1 0 = 1 1 1 1 0 = 1 1 1 1 1
–   Anechka 0.082314+17
−17		(−144)16 − 16
(+13−13=6)
50.0%
16.0 / 32
100.0%
−145
46.4%
2257
1.09
1048
= = 0 1 = = 1 0 1 1 0 0 1 1 1 0 1 0 1 1 = 1 1 0 0 0 = 0 0 1 0 0
1216 games in total: 484 wins, 444 losses, 288 draws (23.7%), score: 51.6%
Average opponent: −13.1 (2444.9), average distance to opponent: 51.1

Performance

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

Perf = C + 0.189 [±0.343] * 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 2005-2010 by Kirill Kryukov
Last games added on August 14, 2010