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
Morphy 3.22 WB#158  (1974+17
−17		)Quote
Author: Eric Walstra (Netherlands) Released: 2000-11-06Link: WBEC
Issues with this engine: It shows inverted evaluation. Occasional losses on time.
This is the only Morphy version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Monarch 1.72131+16
−16		(+157)12 − 20
(+6−14=12)
37.5%
12.0 / 32
0.0%
+75
51.2%
1570
3.16
804
0 = = 0 1 0 = 1 = 0 0 = 0 = = 0 1 1 = 0 0 0 0 = = = 1 0 = 0 1 0
–   Bestia 0.902122+15
−15		(+148)9 − 23
(+6−20=6)
28.1%
9.0 / 32
0.0%
−19
52.0%
2398
3.69
1247
0 0 0 = 0 = = = 0 0 0 0 0 0 = 0 0 1 1 0 1 0 1 0 0 0 1 0 0 = 0 1
–   Ax 0.82119+15
−15		(+145)11 − 21
(+7−17=8)
34.4%
11.0 / 32
0.0%
+35
  
0 0 0 1 0 = 0 0 1 0 0 0 = = 0 = 0 0 0 = 0 0 1 = = 0 1 = 0 1 1 1
–   RDChess 3.232117+16
−16		(+143)6.5 − 25.5
(+4−23=5)
20.3%
6.5 / 32
0.0%
−95
54.4%
2400
3.33
1306
0 = 0 0 0 0 1 1 0 = = 0 = 0 0 0 0 0 = 1 0 0 0 0 0 0 1 0 0 0 0 0
–   DelphiMax 2.92102+16
−16		(+128)9 − 23
(+6−20=6)
28.1%
9.0 / 32
0.0%
−35
56.6%
2330
3.86
1319
0 = 1 = 0 0 0 0 1 1 0 1 0 0 = 0 0 0 0 = 0 = 1 0 0 0 0 = 0 0 1 0
–   Armageddon 2.3082098+17
−17		(+124)9 − 23
(+6−20=6)
28.1%
9.0 / 32
0.0%
−42
55.9%
2253
3.48
1260
0 0 0 0 0 = 0 = 0 0 0 1 0 0 = 0 0 = = 0 1 = 0 0 1 1 0 0 0 0 1 1
–   Requiem 0.532084+15
−15		(+110)13.5 − 18.5
(+3−8=21)
42.2%
13.5 / 32
0.0%
+69
52.5%
690
3.53
362
1 = = = = 0 = = = = 1 = = 0 0 = = 0 = = 0 = 0 = 0 0 = 1 = = = =
–   Small Potato 0.6.12082+16
−16		(+108)13.5 − 18.5
(+10−15=7)
42.2%
13.5 / 32
0.0%
+50
55.1%
2288
3.77
1261
= 1 = 1 0 1 1 1 0 = 1 0 0 0 1 0 0 1 0 0 0 = = = 0 0 = 1 1 0 0 0
–   Elephant 1.062075+16
−16		(+101)14.5 − 17.5
(+12−15=5)
45.3%
14.5 / 32
0.0%
+63
54.0%
2457
3.44
1327
0 0 1 0 0 0 1 0 = 0 = 1 0 1 0 1 1 0 1 0 1 = 0 0 = 0 = 1 1 1 1 0
–   Cilian 4.142069+16
−16		(+95)12 − 20
(+7−15=10)
37.5%
12.0 / 32
0.0%
+11
  
1 0 = 0 1 0 = = 0 0 = 0 1 = = 1 0 = = 0 0 1 1 0 0 0 0 1 = 0 0 =
–   Etude 0.1.22063+19
−19		(+89)13.5 − 18.5
(+7−12=13)
42.2%
13.5 / 32
0.0%
+40
53.1%
1719
3.49
913
0 1 = 1 1 0 0 = = 0 0 = = 1 1 = 0 0 1 0 0 0 0 0 = = 1 = = = = =
–   Gullydeckel 2.16pl12062+19
−19		(+88)11 − 21
(+9−19=4)
34.4%
11.0 / 32
0.0%
−36
54.2%
2710
2.89
1468
0 1 0 = 0 0 0 1 0 = 1 1 0 = 0 1 0 0 0 = 0 0 0 1 0 0 0 1 1 0 1 0
–   JanWillem 1.132062+16
−16		(+88)10 − 22
(+4−16=12)
31.3%
10.0 / 32
0.0%
−34
54.0%
1327
2.96
716
0 0 = 0 0 = 0 = 0 1 = 1 0 = = = 0 0 = 1 0 1 0 0 = = = 0 0 0 = 0
–   Marvin 1.3.02054+16
−16		(+80)13 − 19
(+9−15=8)
40.6%
13.0 / 32
0.0%
+13
55.3%
1945
4.03
1076
0 0 0 1 1 1 0 = 0 = = 0 1 0 0 0 = = 0 1 = 0 1 1 0 0 0 0 1 = = 1
–   Matant 5.042053+17
−17		(+79)12.5 − 19.5
(+8−15=9)
39.1%
12.5 / 32
0.0%
+1
53.7%
1602
3.35
860
0 = = 0 1 1 = 0 0 0 1 0 0 = 1 0 0 = 0 = 1 0 = 1 1 = 0 1 0 0 0 =
–   SSEChessII 2.05 DC2049+17
−17		(+75)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
0.0%
+62
52.9%
2352
3.97
1245
0 0 = 1 0 1 0 1 0 = 0 1 = 1 0 = 0 1 1 0 1 = 1 = 1 1 0 0 1 = 0 0
–   Faile 1.4.42042+15
−15		(+68)11.5 − 20.5
(+9−18=5)
35.9%
11.5 / 32
0.0%
−38
53.9%
2292
3.81
1236
1 0 0 0 1 0 0 0 0 = = 0 0 0 1 1 1 0 0 0 0 = 0 1 0 0 0 = 1 = 1 1
–   Smash 1.0.32036+17
−17		(+62)9 − 23
(+7−21=4)
28.1%
9.0 / 32
0.0%
−113
54.3%
2331
3.76
1265
1 0 0 1 0 = 0 0 1 = = 1 0 0 1 0 0 0 0 0 0 0 = 1 0 0 1 0 0 0 0 0
–   Micro-Max 4.8 PIV DM2028+17
−17		(+54)15 − 17
(+10−12=10)
46.9%
15.0 / 32
0.0%
+34
78.1%
1928
3.61
1506
= = = 1 1 = 0 1 = 0 0 = 0 0 = 0 0 1 1 1 = = = 0 1 1 0 1 0 0 1 0
–   Sharper 0.172022+16
−16		(+48)14 − 18
(+11−15=6)
43.8%
14.0 / 32
0.0%
+1
53.5%
2114
3.95
1132
1 1 0 0 0 1 = 0 1 1 1 0 0 0 1 = 1 1 0 0 0 1 0 = = 0 1 0 = = 0 0
–   Mustang 4.972021+17
−17		(+47)12.5 − 19.5
(+7−14=11)
39.1%
12.5 / 32
0.0%
−24
51.2%
1515
2.67
776
0 0 = 1 1 1 0 0 = 0 0 = 0 = = = = = 0 0 = 0 0 1 = 0 1 = 1 1 0 0
–   Rival UCI 1.182021+17
−17		(+47)11 − 21
(+8−18=6)
34.4%
11.0 / 32
0.0%
−69
52.5%
2692
3.92
1412
0 = 0 0 0 1 = 1 0 = = 0 0 0 0 1 0 = 1 1 0 0 1 0 = 0 0 0 0 1 0 1
–   BibiChess 0.52007+16
−16		(+33)15.5 − 16.5
(+11−12=9)
48.4%
15.5 / 32
0.1%
+23
  
= 0 0 = 1 = 1 = = 0 0 1 1 0 1 0 1 0 1 0 1 0 1 = 0 = 0 = = 1 1 0
–   IACH 0.56z1995+18
−18		(+21)16.5 − 15.5
(+12−11=9)
51.6%
16.5 / 32
3.1%
+31
66.4%
2021
3.71
1342
= = = = 1 = = 1 0 1 = = 1 1 0 1 0 0 0 0 1 0 1 1 0 0 1 = 0 0 1 1
–   Heracles 0.6.161993+19
−19		(+19)13.5 − 18.5
(+9−14=9)
42.2%
13.5 / 32
4.9%
−35
54.3%
2247
3.50
1221
0 = 0 1 = 0 0 1 1 0 0 = 0 = 1 0 0 1 1 1 1 = = 0 = 1 0 = = 0 0 0
–   Clueless 1.41990+18
−18		(+16)14.5 − 17.5
(+13−16=3)
45.3%
14.5 / 32
7.5%
−21
54.5%
2771
3.47
1511
1 0 0 0 0 1 1 1 = 0 0 1 0 = 0 0 1 0 0 0 1 0 = 1 1 1 0 0 1 1 0 1
–   Warrior 1.0.31987+17
−17		(+13)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
11.3%
+3
55.0%
2492
3.10
1370
0 0 0 1 = 1 = 0 1 1 0 0 1 1 0 = 0 = 0 1 = 0 = 1 = 0 0 0 1 1 1 1
–   Eagle 0.7.51973+20
−20		(−1)21.5 − 10.5
(+18−7=7)
67.2%
21.5 / 32
51.1%
+124
51.1%
2528
3.36
1291
1 1 = 0 0 1 1 1 = 1 0 = 1 0 1 1 1 0 = 0 0 = = 1 1 1 1 1 1 = 1 1
–   SnailChess 4.0131973+19
−19		(−1)16 − 16
(+14−14=4)
50.0%
16.0 / 32
52.3%
−1
78.7%
2243
2.61
1766
1 0 = 0 1 0 1 = 1 1 1 0 0 = = 1 0 0 0 1 0 1 0 0 1 1 0 1 0 1 0 1
–   Celes 0.77c1921+20
−20		(−53)18 − 14
(+14−10=8)
56.3%
18.0 / 32
100.0%
−7
51.8%
2042
4.13
1058
1 1 1 0 0 = 0 0 1 1 = 1 0 = 1 1 1 1 = 0 = 0 = 0 0 1 = 1 1 0 1 =
–   Simontacchi 1.811915+20
−20		(−59)19.5 − 12.5
(+18−11=3)
60.9%
19.5 / 32
100.0%
+28
56.7%
2447
3.77
1388
1 0 1 1 0 1 1 1 1 = 0 1 1 1 1 1 0 1 1 = = 1 0 0 0 0 1 0 0 1 0 1
–   Ranita 2.41907+20
−20		(−67)21 − 11
(+17−7=8)
65.6%
21.0 / 32
100.0%
+44
55.5%
1920
3.78
1065
1 = 1 = = 1 1 1 1 1 = 1 1 0 = = 1 0 1 1 0 1 0 0 0 0 1 1 1 = = 1
–   Cecir 3.51885+19
−19		(−89)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
100.0%
−101
53.9%
2393
3.78
1291
1 1 1 0 0 0 = 1 0 0 0 1 = 0 1 1 = 1 = 0 1 = 0 0 0 0 1 1 1 0 = =
–   Enigma 1.1.41879+21
−21		(−95)19 − 13
(+16−10=6)
59.4%
19.0 / 32
100.0%
−26
48.4%
2469
3.82
1196
1 = 1 = 0 1 0 0 = 1 = 1 1 1 1 0 1 1 1 1 0 0 0 = 1 0 1 0 0 = 1 1
–   Soldat 0.25b1873+17
−17		(−101)22.5 − 9.5
(+19−6=7)
70.3%
22.5 / 32
100.0%
+49
51.7%
2233
3.10
1155
1 0 1 1 0 1 0 1 1 = = 1 1 1 1 0 1 1 1 = 0 1 = 1 0 1 1 1 1 = = =
–   Grizzly 1.40.1b1837+20
−20		(−137)25.5 − 6.5
(+20−1=11)
79.7%
25.5 / 32
100.0%
+63
51.1%
1461
2.82
747
1 = 1 = 1 = 1 1 1 1 = 1 1 1 1 1 1 1 = 1 1 1 = = 0 = = 1 = 1 1 =
–   Robin 0.9831834+20
−20		(−140)20.5 − 11.5
(+15−6=11)
64.1%
20.5 / 32
100.0%
−47
55.0%
1967
4.15
1081
1 1 1 0 = = 1 0 1 = 1 0 1 0 = = 1 1 1 = 1 0 = 1 1 = 1 = = = 1 0
–   Elf 1.3.01820+18
−18		(−154)20 − 12
(+16−8=8)
62.5%
20.0 / 32
100.0%
−67
56.4%
1944
4.24
1097
0 0 = 1 1 0 1 1 0 0 1 0 1 1 1 1 = = 1 1 = = = 1 0 1 = 0 1 1 = 1
–   Laurifer 1.01815+18
−18		(−159)25.5 − 6.5
(+24−5=3)
79.7%
25.5 / 32
100.0%
+94
56.2%
2026
2.77
1138
1 1 = 1 1 0 = 1 1 1 1 1 0 1 1 0 1 = 1 1 1 1 0 1 1 1 0 1 1 1 1 1
–   Kanguruh 1.931806+22
−22		(−168)20.5 − 11.5
(+17−8=7)
64.1%
20.5 / 32
100.0%
−65
51.9%
2016
3.97
1046
1 = = 0 1 1 0 1 = = 1 = 1 1 0 0 0 1 1 1 1 0 = 1 0 1 = 0 1 1 1 1
–   Aldebaran 0.7.01794+19
−19		(−180)20 − 12
(+14−6=12)
62.5%
20.0 / 32
100.0%
−100
57.2%
1491
3.37
853
= = 1 = = 1 0 = 0 1 0 0 = = 1 = = = 0 1 1 1 0 1 1 1 1 1 1 = = 1
–   Adamant 1.71790+19
−19		(−184)24.5 − 7.5
(+22−5=5)
76.6%
24.5 / 32
100.0%
+25
57.6%
2333
4.92
1343
1 0 1 1 = 0 1 1 1 1 1 1 1 1 = 1 1 1 1 = = 1 1 1 0 1 1 0 0 = 1 1
–   SEE 0.6.91781+21
−21		(−193)22.5 − 9.5
(+18−5=9)
70.3%
22.5 / 32
100.0%
−50
53.3%
2023
3.91
1079
1 1 1 1 = = = 1 1 1 0 1 = = 1 0 1 1 1 1 = = 1 1 0 1 1 0 = = 1 0
–   Mizar 3.01767+20
−20		(−207)27 − 5
(+25−3=4)
84.4%
27.0 / 32
100.0%
+85
48.7%
2446
4.52
1192
1 1 = 1 0 1 1 1 1 1 = 0 1 1 1 1 1 1 1 1 1 1 = 1 1 = 1 1 1 1 0 1
–   Belzebub 0.671744+22
−22		(−230)23 − 9
(+19−5=8)
71.9%
23.0 / 32
100.0%
−70
50.7%
1998
4.06
1013
0 1 1 = 1 = 1 = = 1 1 1 = 1 1 1 0 1 = 1 0 1 0 1 1 = 1 1 0 = 1 1
–   ALChess 1.5b1729+22
−22		(−245)27 − 5
(+24−2=6)
84.4%
27.0 / 32
100.0%
+28
55.9%
1922
3.55
1074
1 1 = 1 1 = 1 0 = 1 1 = 1 1 1 1 1 0 1 1 1 = 1 = 1 1 1 1 1 1 1 1
1472 games in total: 567 wins, 553 losses, 352 draws (23.9%), score: 50.5%
Average opponent: −6.0 (1968), average distance to opponent: 101.1

Performance

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

Perf = C + 0.037 [±0.140] * 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