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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Laurifer 1.0 WB#170  (1815+18
−18		)Quote
Author: Robert Lubczynski (Poland) Released: 2005-06-14Link: RWBC
Issues with this engine: Laurifer 1.0 does not count moves as part of the time control when external opening book is used. This leads to incorrect time allocation and time trouble. (See discussion about the same bug in other engines). Also it sometimes crashes and sometimes loses on time.
This is the only Laurifer version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Matheus 2.32144+15
−15		(+329)6.5 − 25.5
(+3−22=7)
20.3%
6.5 / 32
0.0%
+103
58.2%
1878
0.84
1093
= 0 0 0 0 0 0 0 0 0 = 1 = 0 1 0 0 0 0 0 = 0 0 = = 0 0 = 0 1 0 0
–   Bodo 0.2b2137+15
−15		(+322)4.5 − 27.5
(+0−23=9)
14.1%
4.5 / 32
0.0%
+57
56.1%
1603
0.50
900
= = = 0 0 0 0 0 0 0 0 0 0 0 = = 0 = 0 0 = 0 0 0 0 0 0 0 = = 0 0
–   Monarch 1.72131+16
−16		(+316)5 − 27
(+2−24=6)
15.6%
5.0 / 32
0.0%
+42
51.5%
1861
0.83
958
0 0 0 0 0 0 0 0 0 0 0 0 0 1 = 0 0 = 0 0 = = 0 0 = 0 0 0 0 = 1 0
–   Bestia 0.902122+15
−15		(+307)7.5 − 24.5
(+4−21=7)
23.4%
7.5 / 32
0.0%
+107
54.4%
1794
0.76
976
0 0 0 = 0 1 0 0 0 = = 1 0 = 0 0 0 = 0 = 0 1 0 0 0 = 0 1 0 0 0 0
–   Ax 0.82119+15
−15		(+304)1.5 − 30.5
(+1−30=1)
4.7%
1.5 / 32
0.0%
−220
  
0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 = 0 0 0 0 0 0 0
–   RDChess 3.232117+16
−16		(+302)8 − 24
(+5−21=6)
25.0%
8.0 / 32
0.0%
+109
56.2%
1709
0.70
961
0 0 0 0 0 = 1 1 0 = 0 = 1 1 0 1 = 0 0 0 0 0 0 0 0 0 0 0 0 = 0 =
–   DelphiMax 2.92102+16
−16		(+287)5 − 27
(+1−23=8)
15.6%
5.0 / 32
0.0%
+29
54.0%
1690
0.70
912
= = 0 0 0 0 0 0 0 = = 0 0 0 = = = 0 0 0 0 0 0 0 0 = 1 0 0 0 0 0
–   Requiem 0.532084+15
−15		(+269)6.5 − 25.5
(+0−19=13)
20.3%
6.5 / 32
0.0%
+77
59.8%
1290
0.68
771
0 = = 0 = 0 0 0 = 0 0 0 0 0 0 = = 0 0 = = 0 0 0 0 = 0 0 = = = =
–   Small Potato 0.6.12082+16
−16		(+267)5 − 27
(+4−26=2)
15.6%
5.0 / 32
0.0%
−46
53.6%
2123
0.74
1137
0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 = 0 0 0 0 1 0 = 0 0 0 0 0
–   Elephant 1.062075+16
−16		(+260)6.5 − 25.5
(+4−23=5)
20.3%
6.5 / 32
0.0%
+22
53.9%
1757
0.81
947
0 0 0 1 = = 0 0 = 0 = = 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0
–   Cilian 4.142069+16
−16		(+254)6 − 26
(+4−24=4)
18.8%
6.0 / 32
0.0%
−6
  
0 0 = = 1 1 1 0 1 0 0 0 0 = 0 0 = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
–   JanWillem 1.132062+16
−16		(+247)10 − 22
(+8−20=4)
31.3%
10.0 / 32
0.0%
+98
55.1%
1988
1.00
1096
0 0 1 1 0 0 0 0 0 1 = 1 1 0 1 0 0 0 = = 0 1 0 1 0 = 0 0 0 0 0 0
–   Marvin 1.3.02054+16
−16		(+239)6.5 − 25.5
(+4−23=5)
20.3%
6.5 / 32
0.0%
+2
54.6%
1992
0.72
1088
0 0 0 0 0 0 0 0 = 1 0 1 0 1 0 0 0 0 0 = 0 0 = 0 0 0 = 1 0 0 0 =
–   Matant 5.042053+17
−17		(+238)4 − 28
(+2−26=4)
12.5%
4.0 / 32
0.0%
−89
56.9%
1873
0.68
1065
0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 = = 0 0 0 0 0 1 = 0 0 0 0 0 = 0 0
–   SSEChessII 2.05 DC2049+17
−17		(+234)4 − 28
(+1−25=6)
12.5%
4.0 / 32
0.0%
−71
52.8%
1886
0.84
996
0 0 0 = 0 = 0 = 0 0 0 0 0 0 = 0 0 0 0 0 0 0 0 = 0 0 0 0 = 1 0 0
–   Faile 1.4.42042+15
−15		(+227)6.5 − 25.5
(+4−23=5)
20.3%
6.5 / 32
0.0%
−9
56.2%
2087
0.64
1172
= 0 = 0 0 0 0 = 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 = 0 0 1 0 1 0 0 =
–   Smash 1.0.32036+17
−17		(+221)5 − 27
(+2−24=6)
15.6%
5.0 / 32
0.0%
−54
53.6%
1902
0.87
1020
0 0 = = 0 = 0 0 0 0 0 = 0 0 1 0 0 0 0 0 1 0 0 0 0 = 0 = 0 0 0 0
–   Micro-Max 4.8 PIV DM2028+17
−17		(+213)6 − 26
(+1−21=10)
18.8%
6.0 / 32
0.0%
−5
76.6%
1682
0.95
1289
0 = 0 = = 0 = = 0 0 0 0 0 0 = 0 0 0 0 0 = = 0 = 0 0 0 0 = 0 0 1
–   Sharper 0.172022+16
−16		(+207)6 − 26
(+4−24=4)
18.8%
6.0 / 32
0.0%
−53
50.6%
1941
0.83
983
0 0 0 = 0 0 0 0 0 0 = 0 0 0 = = 0 0 0 1 0 0 1 0 1 0 1 0 0 0 0 0
–   Mustang 4.972021+17
−17		(+206)8 − 24
(+5−21=6)
25.0%
8.0 / 32
0.0%
+13
59.2%
1852
0.66
1097
0 1 0 = 0 = 0 1 1 = 0 0 0 0 0 0 0 = 0 = 0 0 0 0 0 1 0 0 0 1 0 =
–   Rival UCI 1.182021+17
−17		(+206)8 − 24
(+5−21=6)
25.0%
8.0 / 32
0.0%
+14
52.5%
1959
0.89
1029
= 1 0 = 0 0 0 0 = 0 1 0 0 0 0 0 0 = 1 0 0 1 0 0 = 0 0 = 0 0 1 0
–   BibiChess 0.52007+16
−16		(+192)13.5 − 18.5
(+11−16=5)
42.2%
13.5 / 32
0.0%
+131
  
= 0 0 0 1 = 0 0 1 0 0 0 = 1 1 0 0 0 0 0 0 1 = 1 0 1 1 1 1 = 1 0
–   IACH 0.56z1995+18
−18		(+180)9.5 − 22.5
(+5−18=9)
29.7%
9.5 / 32
0.0%
+37
63.9%
1694
0.85
1082
= 1 0 = 0 0 0 0 = 0 1 = 0 = 0 = 1 0 1 0 0 0 0 0 0 0 = 1 = = 0 0
–   Heracles 0.6.161993+19
−19		(+178)6 − 26
(+2−22=8)
18.8%
6.0 / 32
0.0%
−54
53.5%
1738
0.79
930
0 0 = = 0 = 0 0 1 0 0 = 0 = = 0 0 1 0 0 0 = 0 0 0 = 0 0 0 0 0 0
–   Clueless 1.41990+18
−18		(+175)7.5 − 24.5
(+4−21=7)
23.4%
7.5 / 32
0.0%
−23
57.1%
1721
0.73
982
0 0 0 0 = 0 1 0 0 0 0 0 0 0 = 0 0 1 0 0 1 0 = = 0 = 0 1 0 = = 0
–   Warrior 1.0.31987+17
−17		(+172)7.5 − 24.5
(+4−21=7)
23.4%
7.5 / 32
0.0%
−25
55.0%
1788
0.78
983
= 0 0 0 0 0 0 1 0 0 0 1 0 0 1 = 0 0 0 0 = 0 0 = = 0 = 0 1 0 = 0
–   Morphy 3.221974+17
−17		(+159)6.5 − 25.5
(+5−24=3)
20.3%
6.5 / 32
0.0%
−94
56.2%
2026
2.77
1138
0 0 = 0 0 1 = 0 0 0 0 0 1 0 0 1 0 = 0 0 0 0 1 0 0 0 1 0 0 0 0 0
–   Eagle 0.7.51973+20
−20		(+158)5.5 − 26.5
(+4−25=3)
17.2%
5.5 / 32
0.0%
−127
53.1%
2102
0.69
1117
1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 = = 0 0 = 0
–   SnailChess 4.0131973+19
−19		(+158)12.5 − 19.5
(+8−15=9)
39.1%
12.5 / 32
0.0%
+84
76.3%
1232
1.71
940
= = 0 1 = 0 0 0 = 1 = 0 0 = 1 0 = 1 1 0 = 1 0 0 = 1 0 0 1 0 0 0
–   Celes 0.77c1921+20
−20		(+106)12.5 − 19.5
(+10−17=5)
39.1%
12.5 / 32
0.0%
+21
54.2%
1926
1.26
1043
0 1 0 1 = 0 = 0 0 0 1 = 1 0 1 = 0 1 1 0 0 1 0 = 0 0 0 0 1 1 0 0
–   Simontacchi 1.811915+20
−20		(+100)9.5 − 22.5
(+6−19=7)
29.7%
9.5 / 32
0.0%
−48
54.0%
1719
0.83
929
= 0 = 0 0 0 = 0 0 1 0 0 0 0 = 0 1 = 0 1 0 = 0 0 0 1 0 = 0 1 1 0
–   Ranita 2.41907+20
−20		(+92)16 − 16
(+13−13=6)
50.0%
16.0 / 32
0.0%
+93
58.8%
1714
1.08
1008
= 1 1 1 0 0 0 1 = 1 1 1 = 0 0 1 0 0 1 1 0 1 = = 0 1 0 0 1 = 0 0
–   Cecir 3.51885+19
−19		(+70)11.5 − 20.5
(+9−18=5)
35.9%
11.5 / 32
0.0%
−35
52.5%
1881
0.91
987
= 1 = 0 1 1 0 0 0 1 = 0 0 1 = 1 0 0 0 0 0 1 0 0 0 1 0 = 1 0 0 0
–   Enigma 1.1.41879+21
−21		(+64)15 − 17
(+12−14=6)
46.9%
15.0 / 32
0.0%
+39
50.9%
1819
1.03
926
1 1 0 = 0 = 0 = 1 0 1 0 1 1 0 1 1 1 = 0 0 0 0 = 0 1 0 1 = 0 0 1
–   Soldat 0.25b1873+17
−17		(+58)12 − 20
(+9−17=6)
37.5%
12.0 / 32
0.0%
−35
56.3%
1820
0.87
1025
0 0 1 0 0 0 1 0 1 1 0 0 0 = = 1 0 1 = = 1 1 0 = 0 0 = 0 1 0 0 0
–   Grizzly 1.40.1b1837+20
−20		(+22)10 − 22
(+6−18=8)
31.3%
10.0 / 32
3.6%
−111
52.9%
1754
0.82
928
= = 0 1 0 1 0 0 0 = = 0 0 0 0 0 0 = 0 1 = 1 0 0 1 0 0 1 0 0 = =
–   Robin 0.9831834+20
−20		(+19)15 − 17
(+10−12=10)
46.9%
15.0 / 32
5.5%
−1
54.0%
1472
0.76
795
0 = 1 0 1 0 = = 0 1 = 1 = 0 0 0 0 0 = 0 1 = = 1 1 = 0 1 1 = 0 1
–   Elf 1.3.01820+18
−18		(+5)12.5 − 19.5
(+9−16=7)
39.1%
12.5 / 32
32.1%
−73
54.7%
1789
1.01
979
= = 0 0 0 = 1 1 1 0 0 1 = 0 0 0 1 = 0 0 = = 0 0 1 0 1 1 0 0 0 1
–   Kanguruh 1.931806+22
−22		(−9)14 − 18
(+12−16=4)
43.8%
14.0 / 32
75.8%
−58
51.4%
1834
1.25
942
0 0 0 0 0 = 0 0 1 1 1 1 1 1 0 0 1 = = 1 0 1 1 0 = 0 0 0 0 1 1 0
–   Aldebaran 0.7.01794+19
−19		(−21)19.5 − 12.5
(+15−8=9)
60.9%
19.5 / 32
96.4%
+54
52.2%
1455
1.22
760
1 1 0 = 0 1 1 1 = 1 0 0 0 1 0 1 = = 1 = = 1 1 = 1 0 = 0 1 1 = 1
–   Adamant 1.71790+19
−19		(−25)19 − 13
(+14−8=10)
59.4%
19.0 / 32
98.3%
+40
54.3%
1342
0.99
729
= 1 1 1 = = 1 1 1 = = 0 0 1 1 0 = 1 = 1 1 1 0 0 1 = = 0 = 0 0 1
–   SEE 0.6.91781+21
−21		(−34)21.5 − 10.5
(+19−8=5)
67.2%
21.5 / 32
99.7%
+99
51.9%
1823
1.37
946
0 0 1 1 1 = 1 1 = 1 = 1 1 0 0 = 1 1 1 1 0 0 0 1 = 1 1 0 1 1 1 1
–   Mizar 3.01767+20
−20		(−48)16.5 − 15.5
(+14−13=5)
51.6%
16.5 / 32
100.0%
−36
48.7%
1821
1.59
886
= = 0 1 1 = 1 0 0 0 1 1 0 1 0 0 = 1 0 1 0 = 1 0 0 0 1 1 1 0 1 1
–   Belzebub 0.671744+22
−22		(−71)22 − 10
(+19−7=6)
68.8%
22.0 / 32
100.0%
+70
49.8%
1756
1.31
874
1 0 1 0 = 1 = 1 1 0 0 1 1 1 0 1 1 = 1 = = = 1 1 1 1 1 1 0 1 1 0
–   ALChess 1.5b1729+22
−22		(−86)21 − 11
(+18−8=6)
65.6%
21.0 / 32
100.0%
+33
51.4%
1425
1.01
733
1 1 1 1 = 1 1 0 = 1 = 0 0 0 1 1 = 0 1 1 1 1 = 1 = 1 0 1 0 1 0 1
–   IQ23 0031716+23
−23		(−99)21 − 11
(+15−5=12)
65.6%
21.0 / 32
100.0%
+2
44.0%
880
0.90
387
= 1 1 1 1 = = = 1 = 1 1 1 0 1 1 = 1 = 0 1 1 0 = 0 = = 1 1 = 0 =
–   Rainman 0.7.51687+24
−24		(−128)19.5 − 12.5
(+13−6=13)
60.9%
19.5 / 32
100.0%
−57
51.0%
1199
1.10
611
1 = = 0 0 0 0 1 = = = = 1 1 = 1 = 1 = = = = 1 1 1 0 1 1 = 0 1 1
–   Storm 0.61673+25
−25		(−142)17 − 15
(+15−13=4)
53.1%
17.0 / 32
100.0%
−116
53.6%
1707
1.19
915
0 1 1 0 0 1 0 1 0 = 0 1 0 0 = 1 = 1 0 1 0 1 0 1 = 0 1 1 1 1 1 0
–   Zotron 4.4.61669+24
−24		(−146)21 − 11
(+17−7=8)
65.6%
21.0 / 32
100.0%
−33
44.8%
1381
1.06
618
1 1 0 1 = = 0 1 1 0 1 1 1 1 1 1 1 1 = 0 1 1 = = = 0 1 0 1 0 = =
–   Needle 0.53.11648+25
−25		(−167)24.5 − 7.5
(+21−4=7)
76.6%
24.5 / 32
100.0%
+34
54.6%
1499
1.14
818
= 1 = 1 1 1 1 1 1 0 1 1 1 1 1 1 1 = 1 0 = 1 1 1 = 0 = 0 = 1 1 1
–   Exacto 0.d1607+26
−26		(−208)25.5 − 6.5
(+23−4=5)
79.7%
25.5 / 32
100.0%
+29
44.5%
874
1.29
389
1 1 1 0 1 1 1 1 1 1 1 0 = = = = 0 1 1 1 = 1 1 1 1 0 1 1 1 1 1 1
–   Piranha 0.51574+28
−28		(−241)23.5 − 8.5
(+23−8=1)
73.4%
23.5 / 32
100.0%
−32
49.4%
1919
0.94
948
1 1 0 1 1 0 0 1 1 1 1 1 1 1 1 1 1 0 1 1 = 1 0 0 1 1 1 1 1 0 1 0
–   ChessterfieldCL i5a JA1546+29
−29		(−269)24.5 − 7.5
(+22−5=5)
76.6%
24.5 / 32
100.0%
−60
44.9%
1579
1.34
709
1 1 1 1 1 1 1 = 0 1 1 1 1 1 1 = 0 1 = = 1 1 1 1 0 0 1 = 1 1 1 0
1696 games in total: 451 wins, 910 losses, 335 draws (19.8%), score: 36.5%
Average opponent: +107.0 (1922), average distance to opponent: 170.9

Performance

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

Perf = C + 0.063 [±0.117] * 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