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
Monarch 1.7 UCI#128  (2131+16
−16		)Quote
Author: Steve Maughan (United Kingdom) Released: 2006-08-03Link: Homepage
Issues with this engine: Can make illegal move after receiving a discovered check from an en-passant capture (When Monarch's own pawn blocked the check on the previous move).
This is the only Monarch version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Madeleine 0.22285+15
−15		(+154)11.5 − 20.5
(+9−18=5)
35.9%
11.5 / 32
0.0%
+46
51.5%
2508
1.47
1291
= 0 0 0 1 1 = 0 0 = 0 0 0 = 0 = 1 0 1 1 0 0 0 0 1 0 0 0 1 1 1 0
–   Chispa 4.0.32273+14
−14		(+142)14 − 18
(+4−8=20)
43.8%
14.0 / 32
0.0%
+107
57.5%
894
0.92
514
= 1 1 = = 0 1 0 = 0 = 0 0 = = = = = = = 1 = = = = = 0 0 = = 0 =
–   Uralochka 1.1b2272+18
−18		(+141)11 − 21
(+7−17=8)
34.4%
11.0 / 32
0.0%
+30
56.1%
2057
1.22
1153
= 0 0 1 = = = 0 1 = 0 0 0 0 0 = 1 0 = 0 0 1 1 1 1 0 0 0 0 0 0 =
–   Atlas 2.202271+17
−17		(+140)16.5 − 15.5
(+14−13=5)
51.6%
16.5 / 32
0.0%
+151
  
0 0 1 0 1 0 = = 0 1 1 0 1 1 1 1 = 1 0 0 1 0 = = 0 0 1 0 1 1 1 0
–   Genesis 2.02247+16
−16		(+116)13 − 19
(+11−17=4)
40.6%
13.0 / 32
0.0%
+42
56.1%
2684
1.14
1507
1 0 0 0 1 0 1 0 = 0 0 0 0 0 1 0 0 0 1 1 0 0 0 = 1 = = 1 1 1 0 1
–   Lime 662241+18
−18		(+110)10.5 − 21.5
(+8−19=5)
32.8%
10.5 / 32
0.0%
−22
49.3%
2845
1.20
1402
= 1 0 = 1 1 0 = 1 0 0 1 = 0 0 1 0 0 1 0 0 = 0 0 0 0 1 0 0 0 0 0
–   InmiChess 3.06N2241+15
−15		(+110)12 − 20
(+10−18=4)
37.5%
12.0 / 32
0.0%
+12
50.8%
2444
1.51
1241
0 0 0 1 1 0 1 1 1 = 0 0 0 0 0 0 0 0 0 0 = 0 = 1 1 0 = 1 0 0 1 1
–   Nesik 0.7.0 alpha2237+16
−16		(+106)13 − 19
(+12−18=2)
40.6%
13.0 / 32
0.0%
+29
50.5%
2985
1.42
1507
1 0 0 0 1 0 1 = 1 0 0 0 1 0 1 0 1 0 1 0 1 0 1 1 = 0 0 0 1 0 0 0
–   NagaSkaki 5.122232+18
−18		(+101)10.5 − 21.5
(+7−18=7)
32.8%
10.5 / 32
0.0%
−22
49.4%
2871
1.86
1418
= 1 = 0 1 0 0 0 0 0 0 0 1 0 0 0 = 0 = 0 0 0 1 = 0 1 = 0 = 1 1 0
–   Sunsetter C10.3 64-bit JA2232+16
−16		(+101)11.5 − 20.5
(+7−16=9)
35.9%
11.5 / 32
0.0%
+5
49.7%
2027
1.25
1007
1 0 1 0 1 = = 1 0 0 0 0 0 0 0 = = 0 = = 0 0 1 = 0 = 0 1 1 = 0 0
–   Alarm 0.93.12226+16
−16		(+95)10 − 22
(+7−19=6)
31.3%
10.0 / 32
0.0%
−46
53.9%
2207
1.43
1189
0 = 1 1 0 1 = 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 = = 0 1 1 0 = 0 =
–   Fortress 1.622216+15
−15		(+85)13 − 19
(+10−16=6)
40.6%
13.0 / 32
0.0%
+14
50.6%
2094
1.74
1060
0 1 1 1 0 = 1 0 0 0 1 = 0 1 1 0 = 0 0 0 1 0 = 0 0 1 = 0 0 1 = 0
–   WJChess 1.642215+16
−16		(+84)13 − 19
(+10−16=6)
40.6%
13.0 / 32
0.0%
+14
47.5%
2849
1.66
1353
0 0 0 1 1 0 0 = 1 = 0 1 0 0 = = = 1 0 = 1 0 0 0 0 1 1 0 0 1 0 1
–   Gk 0.90 64-bit JA2194+16
−16		(+63)14.5 − 17.5
(+11−14=7)
45.3%
14.5 / 32
0.0%
+28
55.6%
2342
1.09
1303
1 0 0 0 1 0 = 1 1 = 0 = 1 1 0 1 = 1 1 1 = 0 = 0 0 0 0 0 1 0 0 =
–   Alf 1.09 JA2193+17
−17		(+62)13 − 19
(+9−15=8)
40.6%
13.0 / 32
0.0%
−5
51.4%
2155
1.07
1108
0 0 0 0 = 1 1 1 1 0 0 1 0 0 = 0 0 1 0 1 1 0 = 0 = 0 1 = = = = 0
–   Clarabit 1.00 64-bit2193+18
−18		(+62)14.5 − 17.5
(+10−13=9)
45.3%
14.5 / 32
0.0%
+31
52.2%
1951
1.34
1018
0 1 0 0 0 = = 1 0 0 1 1 = = 0 0 0 0 = 1 = 1 1 0 0 1 = 0 1 = = 1
–   Ghost 0.142189+17
−17		(+58)9 − 23
(+7−21=4)
28.1%
9.0 / 32
0.0%
−118
49.7%
2650
1.41
1318
= 0 0 0 0 1 1 0 0 = 1 0 0 0 0 1 0 0 = 0 = 0 0 0 0 1 1 0 0 0 1 0
–   Wing 2.0a2179+16
−16		(+48)11.5 − 20.5
(+9−18=5)
35.9%
11.5 / 32
0.0%
−59
50.2%
2224
1.38
1117
1 = 1 0 1 1 0 1 0 1 0 0 0 = 0 0 = 0 = 0 0 0 1 0 0 0 0 0 0 1 = 1
–   Uragano 3D 0.872174+16
−16		(+43)10 − 22
(+8−20=4)
31.3%
10.0 / 32
0.0%
−105
50.2%
2555
1.16
1282
1 0 0 = 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 1 = 0 0 0 = 1 1 =
–   Parrot 0707222161+17
−17		(+30)14.5 − 17.5
(+11−14=7)
45.3%
14.5 / 32
0.4%
−5
47.7%
2029
1.54
967
1 0 1 = 0 = 1 = = = 1 0 0 0 1 1 0 0 0 0 1 1 = 1 0 = 0 1 0 0 1 0
–   Matheus 2.32144+15
−15		(+13)15 − 17
(+11−13=8)
46.9%
15.0 / 32
11.4%
−10
54.4%
2743
1.05
1493
= 1 = 0 = = = 0 0 0 1 1 1 1 1 0 0 0 0 1 1 1 1 0 = 0 0 0 1 = 0 =
–   Bodo 0.2b2137+15
−15		(+6)20 − 12
(+19−11=2)
62.5%
20.0 / 32
30.6%
+110
51.4%
2249
1.00
1156
1 0 1 1 1 0 0 0 1 1 1 0 1 1 1 1 1 0 0 0 1 1 0 0 1 = 1 1 1 0 1 =
–   Bestia 0.902122+15
−15		(−9)14 − 18
(+12−16=4)
43.8%
14.0 / 32
81.4%
−59
48.6%
2733
1.54
1328
1 1 0 0 1 0 0 1 0 = 0 = 0 0 = 1 1 1 1 0 1 1 0 0 0 0 1 = 0 1 0 0
–   Ax 0.82119+15
−15		(−12)15.5 − 16.5
(+13−14=5)
48.4%
15.5 / 32
87.5%
−23
  
0 1 0 1 1 0 0 = 0 0 1 = 1 0 0 0 = 1 = 0 0 0 0 1 1 1 0 = 1 1 1 1
–   Gerbil 02 64-bit JA2118+18
−18		(−13)18 − 14
(+16−12=4)
56.3%
18.0 / 32
87.0%
+34
52.8%
2845
0.92
1503
0 1 0 1 1 = 1 0 0 0 0 1 1 1 1 0 = 1 1 1 0 1 1 = 1 0 0 0 1 0 1 =
–   BigLion 2.23x2117+17
−17		(−14)17 − 15
(+12−10=10)
53.1%
17.0 / 32
90.1%
+3
50.6%
1941
0.65
983
0 0 1 1 = 0 0 1 1 = 1 1 0 1 0 = 1 = 0 = = = 1 0 1 = 1 0 0 = 1 =
–   RDChess 3.232117+16
−16		(−14)15 − 17
(+13−15=4)
46.9%
15.0 / 32
89.9%
−38
49.1%
2401
1.61
1180
1 0 0 = 1 0 0 1 1 1 1 0 1 1 0 1 = 0 1 = 0 0 1 0 0 0 1 0 0 0 = 1
–   DelphiMax 2.92102+16
−16		(−29)14 − 18
(+10−14=8)
43.8%
14.0 / 32
99.7%
−73
52.1%
2495
1.53
1300
0 0 0 1 1 0 = 1 0 1 = 1 0 0 = 0 0 1 0 = 0 1 1 0 1 = 0 = 0 1 = =
–   Armageddon 2.3082098+17
−17		(−33)19.5 − 12.5
(+14−7=11)
60.9%
19.5 / 32
99.9%
+38
53.3%
1941
1.14
1034
= 1 1 = = 0 = 0 1 = 0 1 0 0 = = 1 0 0 = = 1 1 1 1 1 1 = 1 = 1 1
–   Requiem 0.532084+15
−15		(−47)20.5 − 11.5
(+15−6=11)
64.1%
20.5 / 32
100.0%
+47
50.7%
1539
0.88
781
1 1 1 = 1 1 1 = 1 1 0 1 1 1 = = = 1 0 = 0 0 = 0 = = 1 0 1 = 1 =
–   Small Potato 0.6.12082+16
−16		(−49)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
+9
52.6%
2511
1.05
1320
= 1 0 = 1 0 = 1 0 = = 0 1 0 0 1 1 1 1 1 0 0 1 0 0 1 1 1 = 1 = 1
–   Elephant 1.062075+16
−16		(−56)25 − 7
(+22−4=6)
78.1%
25.0 / 32
100.0%
+161
51.4%
2423
1.10
1245
1 = 0 1 1 1 1 1 = 1 1 1 1 = 1 1 1 = 1 1 1 = 1 0 1 1 = 0 1 1 1 0
–   La Dame Blanche 2.0c2070+19
−19		(−61)16 − 16
(+14−14=4)
50.0%
16.0 / 32
100.0%
−58
50.0%
2137
1.63
1069
1 1 1 1 = 0 0 1 1 0 0 0 0 1 1 0 = 0 = 0 1 1 = 1 1 0 0 0 1 0 1 0
–   Cilian 4.142069+16
−16		(−62)18.5 − 13.5
(+14−9=9)
57.8%
18.5 / 32
100.0%
−8
  
1 1 1 1 = 1 1 1 = = 0 = = 0 0 = 0 = 0 0 1 1 0 1 1 1 1 = 1 0 = 0
–   Etude 0.1.22063+19
−19		(−68)17.5 − 14.5
(+13−10=9)
54.7%
17.5 / 32
100.0%
−37
53.0%
2030
1.20
1076
1 1 1 = 0 0 = 1 = = = = = 1 0 1 1 0 = 0 0 1 1 0 1 1 = 1 0 0 1 0
–   Gullydeckel 2.16pl12062+19
−19		(−69)16 − 16
(+14−14=4)
50.0%
16.0 / 32
100.0%
−69
50.0%
3207
1.17
1604
0 0 1 0 1 1 0 0 1 1 0 = 1 0 1 0 = 1 0 0 1 1 1 = 1 1 = 0 0 0 0 1
–   JanWillem 1.132062+16
−16		(−69)14 − 18
(+11−15=6)
43.8%
14.0 / 32
100.0%
−117
48.3%
2492
1.17
1204
0 0 0 0 1 0 = 1 1 0 = = = 1 0 1 1 1 0 1 = 0 = 0 0 0 1 0 1 0 1 0
–   Marvin 1.3.02054+16
−16		(−77)15 − 17
(+12−14=6)
46.9%
15.0 / 32
100.0%
−102
49.6%
2953
1.16
1464
1 1 0 0 = 0 = 1 1 1 1 0 = 0 = 1 0 1 0 = 1 0 = 1 0 0 0 1 0 0 1 0
–   Matant 5.042053+17
−17		(−78)18 − 14
(+16−12=4)
56.3%
18.0 / 32
100.0%
−28
49.5%
2054
1.34
1016
0 0 1 1 1 1 0 1 0 1 1 1 1 0 0 1 0 0 1 0 1 0 1 = = 1 1 0 = 0 1 =
–   SSEChessII 2.05 DC2049+17
−17		(−82)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
100.0%
0
49.7%
2717
1.71
1349
0 0 1 = = 1 1 0 0 = 1 0 1 = 1 1 0 = 1 = 1 0 1 1 0 = 1 1 1 1 1 0
–   Faile 1.4.42042+15
−15		(−89)19 − 13
(+16−10=6)
59.4%
19.0 / 32
100.0%
−20
51.9%
2392
0.99
1241
0 = 1 1 = 1 0 0 1 1 1 1 0 0 1 = = 1 0 1 1 1 0 1 1 0 0 = 1 1 0 =
–   Smash 1.0.32036+17
−17		(−95)22 − 10
(+19−7=6)
68.8%
22.0 / 32
100.0%
+46
45.4%
2942
1.10
1335
= 1 1 1 = 1 0 1 1 0 1 1 1 = 1 1 1 1 1 0 0 1 1 = 1 1 = 1 0 0 0 =
–   Micro-Max 4.8 PIV DM2028+17
−17		(−103)21.5 − 10.5
(+17−6=9)
67.2%
21.5 / 32
100.0%
+15
77.9%
2324
0.78
1810
1 = = 0 1 1 1 1 = = = = = 0 1 1 1 = 1 0 1 0 1 1 1 1 = 0 0 1 1 1
–   Sharper 0.172022+16
−16		(−109)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
100.0%
−27
51.4%
2457
1.09
1264
0 = 0 = 0 1 1 = 1 0 1 1 = 1 0 1 1 1 1 1 = 0 0 0 1 = 1 = 1 1 0 1
–   Mustang 4.972021+17
−17		(−110)25.5 − 6.5
(+23−4=5)
79.7%
25.5 / 32
100.0%
+128
51.2%
1760
1.22
901
1 1 1 = = 1 1 1 0 1 1 1 1 1 1 1 = 1 0 1 1 1 = 0 0 1 = 1 1 1 1 1
–   Rival UCI 1.182021+17
−17		(−110)23 − 9
(+19−5=8)
71.9%
23.0 / 32
100.0%
+48
48.0%
2737
1.06
1314
= 1 1 = 1 1 1 0 1 = 0 = 1 = 1 1 = 1 1 0 1 1 1 1 0 = 1 = 0 1 1 1
–   BibiChess 0.52007+16
−16		(−124)16 − 16
(+13−13=6)
50.0%
16.0 / 32
100.0%
−124
  
= 0 1 1 1 1 1 = = = 1 1 0 = 1 0 0 1 = 0 0 0 1 1 0 1 0 0 1 0 0 0
–   Warrior 1.0.31987+17
−17		(−144)24 − 8
(+21−5=6)
75.0%
24.0 / 32
100.0%
+47
50.0%
2282
1.32
1142
0 = 1 1 = = 1 0 0 1 1 1 0 = 1 1 1 1 = 1 1 0 = 1 1 1 1 1 1 1 1 1
–   Morphy 3.221974+17
−17		(−157)20 − 12
(+14−6=12)
62.5%
20.0 / 32
100.0%
−75
51.2%
1570
3.16
804
1 = = 1 0 1 = 0 = 1 1 = 1 = = 1 0 0 = 1 1 1 1 = = = 0 1 = 1 0 1
–   Soldat 0.25b1873+17
−17		(−258)29.5 − 2.5
(+27−0=5)
92.2%
29.5 / 32
100.0%
+114
48.3%
2139
1.24
1034
1 1 = 1 1 1 1 1 1 = 1 = 1 1 1 1 1 1 1 = 1 1 1 1 = 1 1 1 1 1 1 1
–   Elf 1.3.01820+18
−18		(−311)27.5 − 4.5
(+26−3=3)
85.9%
27.5 / 32
100.0%
+10
46.7%
2151
1.46
1004
1 = 1 0 1 1 0 1 1 1 1 1 = 1 1 1 1 1 1 1 1 1 0 1 = 1 1 1 1 1 1 1
–   Laurifer 1.01815+18
−18		(−316)27 − 5
(+24−2=6)
84.4%
27.0 / 32
100.0%
−42
51.5%
1861
0.83
958
1 1 1 1 1 1 1 1 1 1 1 1 1 0 = 1 1 = 1 1 = = 1 1 = 1 1 1 1 = 0 1
1664 games in total: 698 wins, 627 losses, 339 draws (20.4%), score: 52.1%
Average opponent: −17.3 (2113.7), average distance to opponent: 89.2

Performance

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

Perf = C + 0.066 [±0.165] * 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