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
Patzer 3.80 UCI#71–72  (2460+16
−16		)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
–   Quark 2.352536+16
−16		(+76)11.5 − 20.5
(+8−17=7)
35.9%
11.5 / 32
0.0%
−26
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
–   Gaia 3.5 64-bit2536+17
−17		(+76)12 − 20
(+7−15=10)
37.5%
12.0 / 32
0.0%
−8
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
–   King of Kings 2.562536+18
−18		(+76)14.5 − 17.5
(+12−15=5)
45.3%
14.5 / 32
0.0%
+39
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 10.992531+17
−17		(+71)14.5 − 17.5
(+11−14=7)
45.3%
14.5 / 32
0.0%
+37
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 4.62524+16
−16		(+64)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 3.072521+16
−16		(+61)18 − 14
(+14−10=8)
56.3%
18.0 / 32
0.0%
+106
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-bit2521+15
−15		(+61)12.5 − 19.5
(+9−16=7)
39.1%
12.5 / 32
0.0%
−18
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
–   RomiChess P3k 64-bit2502+18
−18		(+42)17 − 15
(+12−10=10)
53.1%
17.0 / 32
0.0%
+65
60.8%
1694
0.96
1030
0 = 0 = 1 0 0 0 = = 0 1 1 1 = 0 0 1 1 = 1 = 1 = = = 0 0 1 1 1 1
–   Amy 0.8.7b DC2500+17
−17		(+40)8.5 − 23.5
(+6−21=5)
26.6%
8.5 / 32
0.0%
−141
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
–   KnightDreamer 3.32499+16
−16		(+39)16 − 16
(+12−12=8)
50.0%
16.0 / 32
0.0%
+40
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
–   Francesca MAD 0.13 Nobook2493+19
−19		(+33)16 − 16
(+12−12=8)
50.0%
16.0 / 32
0.3%
+31
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 0.53h2490+17
−17		(+30)13 − 19
(+9−15=8)
40.6%
13.0 / 32
0.3%
−37
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 JA2482+16
−16		(+22)17.5 − 14.5
(+15−12=5)
54.7%
17.5 / 32
2.3%
+58
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 10162480+16
−16		(+20)13.5 − 18.5
(+8−13=11)
42.2%
13.5 / 32
3.5%
−28
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
–   Djinn 0.925x2479+16
−16		(+19)20 − 12
(+15−7=10)
62.5%
20.0 / 32
3.9%
+103
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 =
–   Comet B682478+14
−14		(+18)11 − 21
(+8−18=6)
34.4%
11.0 / 32
4.2%
−100
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
–   Sjeng 12.132475+14
−14		(+15)14 − 18
(+9−13=10)
43.8%
14.0 / 32
7.2%
−28
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 0.899b2474+16
−16		(+14)16 − 16
(+13−13=6)
50.0%
16.0 / 32
9.3%
+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
–   Queen 4.032466+17
−17		(+6)16.5 − 15.5
(+10−9=13)
51.6%
16.5 / 32
29.4%
+16
52.9%
1596
1.05
844
= 1 = = 1 0 = = 0 0 0 1 1 1 0 = 1 = = 1 1 1 0 0 = 0 = = = = 0 1
–   The Crazy Bishop 00522460+15
−15		(0)17 − 15
(+12−10=10)
53.1%
17.0 / 32
48.9%
+20
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
–   Der Bringer 1.92455+15
−15		(−5)14 − 18
(+9−13=10)
43.8%
14.0 / 32
66.9%
−46
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 =
–   Gosu 0.162455+16
−16		(−5)13 − 19
(+10−16=6)
40.6%
13.0 / 32
67.1%
−72
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 JA2452+15
−15		(−8)14 − 18
(+10−14=8)
43.8%
14.0 / 32
76.3%
−50
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
–   Homer 2.012452+17
−17		(−8)16 − 16
(+9−9=14)
50.0%
16.0 / 32
76.4%
−9
52.8%
1361
0.79
719
1 1 = 0 1 = = 0 1 1 = 0 = 1 0 0 = = = 1 0 1 = = = 0 0 = = 1 0 =
–   Betsy 6.51 Nobook2450+15
−15		(−10)17 − 15
(+13−11=8)
53.1%
17.0 / 32
81.1%
+14
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 JA2448+16
−16		(−12)21.5 − 10.5
(+18−7=7)
67.2%
21.5 / 32
85.4%
+116
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 =
–   Amateur 2.822446+15
−15		(−14)20.5 − 11.5
(+16−7=9)
64.1%
20.5 / 32
89.8%
+82
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 =
–   Tytan 9.32 64-bit2429+17
−17		(−31)13 − 19
(+9−15=8)
40.6%
13.0 / 32
99.7%
−98
  
1 0 1 1 1 1 0 = = 0 1 = 0 = 0 0 = 0 1 1 0 0 0 0 0 = 0 0 1 0 = =
–   Sage 3.532424+19
−19		(−36)21.5 − 10.5
(+21−10=1)
67.2%
21.5 / 32
99.8%
+112
52.6%
2364
1.19
1243
0 0 1 1 0 1 1 1 0 1 0 1 1 0 1 1 1 1 0 1 1 0 1 1 1 0 1 1 = 1 1 0
–   Sorgenkind 0.42421+18
−18		(−39)18 − 14
(+16−12=4)
56.3%
18.0 / 32
99.9%
+8
51.5%
2139
1.08
1102
1 1 1 1 1 0 0 1 1 = 0 1 0 1 1 = 0 1 0 0 = 1 1 1 0 0 1 0 0 1 0 =
–   Horizon 4.42419+18
−18		(−41)18 − 14
(+14−10=8)
56.3%
18.0 / 32
100.0%
+2
49.9%
1940
0.97
968
= 1 1 = 1 1 1 0 1 1 = = 0 1 1 1 0 1 0 = = = 1 0 0 0 = 1 0 1 0 0
–   Thor's Hammer 2.28 32-bit2417+15
−15		(−43)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
+13
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 1.72415+16
−16		(−45)17.5 − 14.5
(+12−9=11)
54.7%
17.5 / 32
100.0%
−14
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 0.99.22411+16
−16		(−49)19.5 − 12.5
(+17−10=5)
60.9%
19.5 / 32
100.0%
+33
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 1.0.32409+15
−15		(−51)18.5 − 13.5
(+16−11=5)
57.8%
18.5 / 32
100.0%
+8
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
–   Asterisk 0.62402+17
−17		(−58)13 − 19
(+6−12=14)
40.6%
13.0 / 32
100.0%
−116
52.9%
1664
0.96
880
0 = = = 0 0 1 1 1 1 = = 1 0 = = = 0 = 0 = = = 0 1 = = 0 0 0 0 0
–   Resp 0.19 64-bit JA Nobook2402+16
−16		(−58)16 − 16
(+13−13=6)
50.0%
16.0 / 32
100.0%
−56
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 0.812396+15
−15		(−64)17 − 15
(+13−11=8)
53.1%
17.0 / 32
100.0%
−40
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 JA2390+15
−15		(−70)19 − 13
(+14−8=10)
59.4%
19.0 / 32
100.0%
−7
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 1.922385+15
−15		(−75)15 − 17
(+11−13=8)
46.9%
15.0 / 32
100.0%
−98
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 1.482384+15
−15		(−76)19.5 − 12.5
(+14−7=11)
60.9%
19.5 / 32
100.0%
−3
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 0.2.9942371+16
−16		(−89)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
100.0%
+18
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
–   Matilde 2008 64-bit2368+15
−15		(−92)19.5 − 12.5
(+17−10=5)
60.9%
19.5 / 32
100.0%
−9
54.0%
1788
1.33
966
1 0 = 1 1 0 1 1 1 1 = 0 1 = 0 0 0 0 0 1 = 0 1 = 1 1 0 1 1 1 1 1
–   EXchess 5.01 beta 64-bit JA2355+14
−14		(−105)22.5 − 9.5
(+20−7=5)
70.3%
22.5 / 32
100.0%
+52
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 1.162345+15
−15		(−115)20 − 12
(+16−8=8)
62.5%
20.0 / 32
100.0%
−25
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-F2333+16
−16		(−127)25 − 7
(+23−5=4)
78.1%
25.0 / 32
100.0%
+103
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 0.082320+16
−16		(−140)16 − 16
(+13−13=6)
50.0%
16.0 / 32
100.0%
−141
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
1504 games in total: 598 wins, 541 losses, 365 draws (24.3%), score: 51.9%
Average opponent: −14.5 (2445.5), average distance to opponent: 47.9

Performance

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

Perf = C + 0.223 [±0.327] * 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