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

Options
Show each game results
Pseudo 0.7c WB#23  (2680+18
−18		)Quote
Author: Jan Klima (Czech Republic) Released: 2005-04-23Link: WBEC
This engine is stable and runs without issues.
This is the only Pseudo version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Fruit 2.3 32-bit2888+23
−23		(+208)4 − 18
(+2−16=4)
18.2%
4.0 / 22
0.0%
−49
58.7%
2078
0.47
1220
= 0 0 0 0 0 = 0 0 0 0 0 1 0 0 = 0 0 0 0 = 1
–   Glaurung 2.0.1 64-bit2838+23
−23		(+158)8.5 − 18.5
(+4−14=9)
31.5%
8.5 / 27
0.0%
+35
62.2%
1633
0.82
1016
= = = 0 0 = 0 0 = 0 0 = 0 = 1 0 0 0 1 1 = 1 0 = 0 0 0
–   Delfi 5.42801+24
−24		(+121)10.5 − 21.5
(+5−16=11)
32.8%
10.5 / 32
0.0%
+7
63.5%
2159
0.52
1370
1 0 0 1 0 0 = 0 = = 0 0 = 1 0 = = 0 = 0 = = 0 0 0 0 0 1 1 = 0 =
–   Naum 2.0 64-bit2793+21
−21		(+113)10.5 − 21.5
(+5−16=11)
32.8%
10.5 / 32
0.0%
0
56.4%
2114
0.70
1192
1 0 = 0 1 = = 0 = 0 = 0 1 = 0 = 0 = 0 0 0 = 0 = = 0 1 0 1 0 0 0
–   Bright 0.2c2786+23
−23		(+106)8.5 − 16.5
(+5−13=7)
34.0%
8.5 / 25
0.0%
−2
54.1%
2085
0.62
1127
= = = 1 = = 0 = 0 0 1 0 0 0 0 1 0 0 0 1 0 = 1 0 0
–   Glaurung 1.2.1 64-bit2770+24
−24		(+90)11.5 − 20.5
(+6−15=11)
35.9%
11.5 / 32
0.0%
−4
58.7%
2092
0.60
1228
0 1 0 1 = 0 0 1 = 0 0 1 = 0 1 0 = = 0 0 = = 0 = 0 = 0 0 = 0 = 1
–   Alaric 7072768+22
−22		(+88)9.5 − 18.5
(+5−14=9)
33.9%
9.5 / 28
0.0%
−20
61.8%
1884
0.43
1165
0 0 = = 0 1 = 0 0 = 0 0 0 1 = 1 0 0 0 1 0 0 = 1 = = = 0
–   Scorpio 2.0 32-bit2754+23
−23		(+74)11.5 − 12.5
(+9−10=5)
47.9%
11.5 / 24
0.0%
+59
61.3%
1975
0.86
1211
0 = = 1 1 0 0 0 0 0 = = 1 1 0 1 = 0 0 0 1 1 1 1
–   Scorpio 1.912739+26
−26		(+59)10 − 18
(+4−12=12)
35.7%
10.0 / 28
0.0%
−29
59.7%
1263
0.87
754
= 0 = = = = 0 0 = = 1 = = 1 1 0 = 0 0 0 0 1 0 = 0 = 0 0
–   E.T. Chess 13.01.082733+21
−21		(+53)14 − 14
(+10−10=8)
50.0%
14.0 / 28
0.0%
+52
59.9%
2017
0.57
1209
0 1 0 0 1 1 = 1 0 1 1 0 = 0 = 1 0 = 0 0 1 = = 1 0 1 = =
–   WildCat 82730+22
−22		(+50)13 − 19
(+8−14=10)
40.6%
13.0 / 32
0.0%
−15
59.1%
2418
0.54
1430
1 = 0 0 1 = = = 1 1 = = 1 = 0 0 1 0 0 = = 0 0 0 0 0 0 1 0 = 0 1
–   Alfil 8.1.1 Optimized2723+21
−21		(+43)15.5 − 11.5
(+12−8=7)
57.4%
15.5 / 27
0.0%
+97
58.9%
2362
0.64
1392
0 0 0 = 1 = 1 1 0 0 1 1 1 1 0 1 = 1 = = 0 1 = = 1 1 0
–   Movei 00.8.438 (10-10-10)2722+21
−21		(+42)12.5 − 16.5
(+8−12=9)
43.1%
12.5 / 29
0.0%
−7
57.1%
2226
0.56
1271
1 0 1 1 0 = 0 1 = = 0 1 0 0 1 0 1 = 0 1 0 = = = 0 0 = = 0
–   Pro Deo 1.62719+22
−22		(+39)10 − 18
(+7−15=6)
35.7%
10.0 / 28
0.1%
−62
55.5%
2213
0.50
1229
= 1 0 1 0 = 1 0 = 1 0 0 = 0 0 = = 1 0 0 0 0 1 0 0 0 0 1
–   Delfi 5.22718+21
−21		(+38)8.5 − 17.5
(+6−15=5)
32.7%
8.5 / 26
0.1%
−88
61.3%
2471
0.55
1514
0 0 1 0 1 0 = 0 0 0 0 = 1 = 0 = 0 1 0 1 0 = 0 0 0 1
–   WildCat 72718+19
−19		(+38)9 − 14
(+6−11=6)
39.1%
9.0 / 23
0.1%
−38
60.3%
1822
0.53
1099
0 0 0 0 = 1 0 0 = 1 0 = 1 0 = 0 1 1 = 1 0 0 =
–   Zappa 1.1 64-bit2717+19
−19		(+37)11 − 21
(+5−15=12)
34.4%
11.0 / 32
0.1%
−64
58.6%
1780
0.68
1043
0 = 1 = = = 0 0 = 0 = 0 0 1 0 = 0 0 1 0 = = 0 = 0 1 = 0 0 = 0 1
–   Slow Chess Blitz WV2.12716+19
−19		(+36)12 − 15
(+10−13=4)
44.4%
12.0 / 27
0.1%
−7
61.1%
2328
0.60
1423
0 = 1 = 0 0 = 1 1 1 0 1 1 1 = 0 0 1 0 0 0 0 0 1 1 0 0
–   Alaric 7042713+26
−26		(+33)11 − 21
(+6−16=10)
34.4%
11.0 / 32
1.3%
−73
60.1%
2331
0.44
1400
0 0 1 1 0 0 0 0 0 1 = 0 0 = 1 0 = 0 0 0 = = 0 1 = = 1 = = = 0 0
–   Frenzee 3.0 64-bit2711+19
−19		(+31)8.5 − 16.5
(+6−14=5)
34.0%
8.5 / 25
0.4%
−90
58.7%
2008
0.85
1179
0 0 1 1 = 1 0 0 = 0 1 1 = 0 0 1 0 = 0 0 0 = 0 0 0
–   Colossus 2007d2707+20
−20		(+27)11 − 14
(+7−10=8)
44.0%
11.0 / 25
1.3%
−16
58.9%
1787
0.54
1052
0 0 0 = 0 = 0 1 = 1 = 0 = 0 1 = = 1 0 1 1 0 0 1 =
–   Pharaon 3.5.12704+19
−19		(+24)14 − 18
(+10−14=8)
43.8%
14.0 / 32
1.9%
−21
59.1%
2357
0.45
1394
1 1 0 0 = = 0 0 0 = 1 = 0 0 0 = 0 1 = = 1 0 0 = 0 1 0 1 0 1 1 1
–   List 5.122699+18
−18		(+19)17 − 15
(+11−9=12)
53.1%
17.0 / 32
5.0%
+41
59.0%
2075
0.59
1225
= 1 = 0 0 1 1 = = 1 0 1 = = = 0 = 1 1 = = 0 = 1 = 0 1 1 0 1 0 0
–   SOS 5.12697+18
−18		(+17)14.5 − 9.5
(+11−6=7)
60.4%
14.5 / 24
7.2%
+90
59.6%
1729
0.64
1030
0 1 0 = 1 0 = 1 = = 0 0 0 1 = = 1 1 1 1 = 1 1 1
–   Colossus 2007c2694+19
−19		(+14)11.5 − 17.5
(+5−11=13)
39.7%
11.5 / 29
12.1%
−48
59.4%
1700
0.52
1010
= = = 0 = 1 0 = = = 1 = 0 1 0 0 = = 0 0 0 = = 1 0 1 = 0 0
–   Ruffian 1.0.52687+17
−17		(+7)14 − 18
(+8−12=12)
43.8%
14.0 / 32
25.3%
−32
61.4%
2033
0.49
1249
= 0 0 = 0 0 0 = 1 = = 0 1 = = 0 = 1 1 1 1 0 = = 0 = = 0 0 0 1 1
–   Petir 4.392682+18
−18		(+2)10.5 − 11.5
(+7−8=7)
47.7%
10.5 / 22
44.6%
−12
65.8%
1470
0.51
967
0 0 0 1 = = = = 1 0 = = 0 = 1 0 1 1 1 0 1 0
–   Aristarch 4.502671+18
−18		(−9)18 − 14
(+12−8=12)
56.3%
18.0 / 32
78.9%
+30
56.9%
1848
0.77
1052
1 1 = = 1 0 = = 0 = = 0 = 1 1 = 1 0 = = 1 0 1 1 1 = 0 1 = 0 0 1
–   Petir 4.9999992670+19
−19		(−10)11 − 10
(+7−6=8)
52.4%
11.0 / 21
81.2%
+7
63.7%
1743
0.45
1110
0 0 = = = 1 0 1 0 = 1 = 1 0 1 1 1 = = 0 =
–   Hamsters 0.62669+18
−18		(−11)15.5 − 9.5
(+14−8=3)
62.0%
15.5 / 25
82.0%
+82
59.7%
2810
0.40
1677
0 0 1 0 0 0 1 1 1 1 1 0 = 1 1 1 0 1 1 0 1 = = 1 1
–   The Baron 2.23 64-bit2669+19
−19		(−11)14 − 18
(+12−16=4)
43.8%
14.0 / 32
81.9%
−58
56.9%
2814
0.80
1600
= 1 1 0 1 1 0 0 0 1 1 0 1 0 0 0 0 1 = 0 = = 0 1 0 0 1 1 1 0 0 0
–   Booot 4.13.12668+18
−18		(−12)13 − 11
(+9−7=8)
54.2%
13.0 / 24
85.9%
+16
57.4%
2132
0.47
1223
0 0 = = 0 1 0 1 1 1 1 1 1 0 = = 0 = = = 1 1 = 0
–   BugChess2 1.5.22661+18
−18		(−19)13.5 − 8.5
(+12−7=3)
61.4%
13.5 / 22
94.9%
+71
58.4%
1876
0.53
1096
1 1 1 1 0 = 1 0 = 0 1 1 0 0 0 1 1 1 0 = 1 1
–   Jonny 2.832652+17
−17		(−28)11 − 11
(+7−7=8)
50.0%
11.0 / 22
99.4%
−29
54.2%
1605
0.52
870
= = = = 1 0 0 1 1 0 = 1 = 0 = 1 1 0 1 = 0 0
–   Crafty 21.5 64-bit PS2652+17
−17		(−28)15 − 11
(+9−5=12)
57.7%
15.0 / 26
99.3%
+21
59.3%
1443
0.66
855
= 1 1 1 = = = 1 = = 0 1 1 0 = = 1 = = 1 0 1 0 = = 0
–   The Baron 1.8.12651+18
−18		(−29)18.5 − 9.5
(+16−7=5)
66.1%
18.5 / 28
99.4%
+91
57.1%
2212
0.77
1262
= 0 1 1 0 1 1 = 1 1 1 = = 1 1 1 1 0 0 0 1 0 1 0 1 = 1 1
–   Anaconda 2.0.12644+17
−17		(−36)13 − 12
(+8−7=10)
52.0%
13.0 / 25
99.9%
−21
58.1%
1556
0.64
904
0 1 = = 1 0 1 0 0 1 = = = = = 0 0 = = 1 = 1 0 1 1
–   Movei 00.8.4032643+22
−22		(−37)21 − 7
(+17−3=8)
75.0%
21.0 / 28
99.7%
+140
57.5%
2197
0.43
1263
0 = 1 1 1 1 1 1 = = = 1 1 1 = 1 = 1 1 = 1 1 = 1 1 0 0 1
–   Fritz 5.322643+17
−17		(−37)11 − 15
(+6−10=10)
42.3%
11.0 / 26
99.9%
−84
60.7%
1412
0.52
857
0 0 0 0 1 1 1 1 0 = = = 0 0 = 0 1 0 = = = = = 0 1 =
–   Ktulu 4.22634+17
−17		(−46)17.5 − 10.5
(+14−7=7)
62.5%
17.5 / 28
100.0%
+42
60.1%
2157
0.59
1297
1 1 = 1 1 0 = 0 1 1 = 0 = = 1 1 1 0 1 0 1 = 1 0 1 1 = 0
–   Thinker 4.7a2634+17
−17		(−46)12 − 13
(+7−8=10)
48.0%
12.0 / 25
100.0%
−59
58.8%
1558
0.57
916
= 0 0 = 1 = 0 = 1 0 1 = = 0 = = 1 0 0 = = 1 1 1 0
–   SmarThink 0.17a2633+16
−16		(−47)21.5 − 10.5
(+17−6=9)
67.2%
21.5 / 32
100.0%
+70
51.7%
2385
0.56
1234
0 1 1 = 1 1 1 0 1 = 1 = 1 = 1 1 0 1 1 = = 0 0 0 1 = 1 1 1 = = 1
–   Ufim 8.022628+18
−18		(−52)11 − 16
(+6−11=10)
40.7%
11.0 / 27
100.0%
−109
58.5%
1806
0.86
1057
0 0 0 1 0 = 0 1 = = = 1 0 = = 1 0 = 1 = = 0 0 0 1 0 =
–   Fritz 6 Light2627+19
−19		(−53)18.5 − 13.5
(+12−7=13)
57.8%
18.5 / 32
100.0%
−3
59.4%
2265
0.40
1345
= 1 1 0 1 0 1 = = = = = = 1 = = = 0 = 1 0 1 1 = 1 0 0 0 1 = 1 1
–   Trace 1.37a2622+17
−17		(−58)15.5 − 9.5
(+13−7=5)
62.0%
15.5 / 25
100.0%
+28
57.6%
1961
0.67
1129
0 = 0 1 1 1 0 = 1 0 1 1 1 1 1 0 = 0 = = 1 1 0 1 1
–   AnMon 5.602621+18
−18		(−59)16.5 − 6.5
(+14−4=5)
71.7%
16.5 / 23
100.0%
+103
58.5%
1735
0.44
1015
1 1 1 1 1 1 0 1 1 1 1 1 1 = 0 = 1 0 = 0 = = 1
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17		(−66)15.5 − 10.5
(+12−7=7)
59.6%
15.5 / 26
100.0%
−3
55.5%
1883
0.87
1045
= 1 0 = 1 = 1 0 1 0 = 1 = 1 0 1 1 1 1 1 = 0 1 0 = 0
–   Yace 0.99.872609+17
−17		(−71)19 − 7
(+14−2=10)
73.1%
19.0 / 26
100.0%
+78
62.0%
1283
0.41
796
1 1 1 = = 1 = = 0 = 1 = 1 = 1 0 1 1 1 1 = = 1 = 1 1
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19		(−73)14 − 10
(+7−3=14)
58.3%
14.0 / 24
100.0%
−27
57.2%
993
0.74
568
= 1 = = = = = 1 = = 0 1 0 1 = 1 0 = = = 1 = 1 =
1334 games in total: 433 wins, 492 losses, 409 draws (30.7%), score: 47.8%
Average opponent: +15.9 (2695.9), average distance to opponent: 49.0

Performance

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

Perf = C − 0.149 [±0.263] * 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