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
RDChess 3.23 WB#132–133  (2117+16
−16		)Quote
Author: Rudolf Posch (Austria) Released: 2003-12-22Link: Homepage
Issues with this engine: Occasional losses on time.
This is the only RDChess version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Chispa 4.0.32273+14
−14		(+156)9 − 23
(+3−17=12)
28.1%
9.0 / 32
0.0%
+13
52.7%
1206
0.80
636
0 = = = = 0 0 = 0 0 0 0 1 = = 0 0 1 0 0 = = 0 = 0 0 = 1 0 0 = 0
–   Atlas 2.202271+17
−17		(+154)10 − 22
(+7−19=6)
31.3%
10.0 / 32
0.0%
+10
  
0 0 1 = 0 0 = 0 = 1 0 0 1 1 0 0 0 0 0 0 = 0 1 1 0 0 = 0 = 0 0 1
–   Genesis 2.02247+16
−16		(+130)7.5 − 24.5
(+5−22=5)
23.4%
7.5 / 32
0.0%
−81
55.2%
2374
0.78
1311
0 0 0 0 0 0 0 0 0 0 = 1 1 0 0 0 = 1 0 0 0 0 1 = 0 0 0 0 = 0 1 =
–   Lime 662241+18
−18		(+124)8.5 − 23.5
(+6−21=5)
26.6%
8.5 / 32
0.0%
−60
50.6%
2480
0.94
1256
0 0 0 1 = = 0 0 1 = 1 0 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 = 0 0 =
–   InmiChess 3.06N2241+15
−15		(+124)9 − 23
(+5−19=8)
28.1%
9.0 / 32
0.0%
−32
53.9%
1875
0.79
1010
= 0 1 0 0 0 0 = 0 = 0 0 1 1 0 0 1 0 0 0 0 0 = 0 = = 0 0 = = 1 0
–   Nesik 0.7.0 alpha2237+16
−16		(+120)8.5 − 23.5
(+6−21=5)
26.6%
8.5 / 32
0.0%
−63
54.0%
2675
0.78
1445
= 0 0 0 = 1 0 1 1 1 0 0 1 = 0 0 0 0 0 = = 0 0 0 0 0 0 0 1 0 0 0
–   NagaSkaki 5.122232+18
−18		(+115)8 − 24
(+4−20=8)
25.0%
8.0 / 32
0.0%
−66
55.5%
1927
0.73
1070
0 0 1 0 0 0 1 = 1 1 0 0 = 0 0 0 = 0 = 0 0 0 = = 0 = 0 0 0 = 0 0
–   Sunsetter C10.3 64-bit JA2232+16
−16		(+115)7.5 − 24.5
(+5−22=5)
23.4%
7.5 / 32
0.0%
−96
54.5%
2235
0.84
1219
0 0 0 0 1 0 0 0 0 0 = 0 0 0 1 0 0 0 0 0 = 0 = 1 = 1 1 0 0 0 = 0
–   Alarm 0.93.12226+16
−16		(+109)10 − 22
(+7−19=6)
31.3%
10.0 / 32
0.0%
−32
57.3%
2168
0.82
1243
0 0 0 0 0 0 0 0 = 0 = 0 0 0 1 1 0 0 1 0 0 1 1 1 = 0 = = 0 = 1 0
–   Fortress 1.622216+15
−15		(+99)14 − 18
(+12−16=4)
43.8%
14.0 / 32
0.0%
+50
54.4%
2253
1.03
1225
1 1 0 0 1 1 0 0 0 0 = 1 0 0 1 0 0 1 1 0 0 0 0 = = 1 1 1 1 0 = 0
–   WJChess 1.642215+16
−16		(+98)12.5 − 19.5
(+7−14=11)
39.1%
12.5 / 32
0.0%
+27
56.0%
1879
0.67
1053
0 = = = = 1 0 = 0 = 0 1 0 = 0 0 1 0 1 0 0 = = 1 = 0 0 0 1 = 1 0
–   Gk 0.90 64-bit JA2194+16
−16		(+77)11.5 − 20.5
(+9−18=5)
35.9%
11.5 / 32
0.0%
−31
51.1%
2493
1.02
1274
0 0 1 0 0 0 1 0 0 1 0 0 0 0 = 1 0 0 = 1 0 0 = 1 1 = 1 0 0 0 1 =
–   Alf 1.09 JA2193+17
−17		(+76)14 − 18
(+11−15=6)
43.8%
14.0 / 32
0.0%
+25
54.0%
2317
0.99
1252
0 0 1 0 1 0 1 0 1 0 1 = 0 = 0 1 1 = 0 1 0 = 1 = 0 0 1 = 0 0 1 0
–   Clarabit 1.00 64-bit2193+18
−18		(+76)13 − 19
(+9−15=8)
40.6%
13.0 / 32
0.0%
+9
54.9%
2448
0.92
1343
0 1 1 1 0 0 = 0 = = 0 1 0 1 0 1 0 = 0 1 1 0 0 = 0 0 = = 0 0 = 1
–   Ghost 0.142189+17
−17		(+72)13 − 19
(+9−15=8)
40.6%
13.0 / 32
0.0%
+5
54.5%
2045
1.25
1114
= = 1 0 1 = 0 0 = 0 = 1 0 0 0 0 = 0 0 0 0 0 1 1 1 = 1 1 1 0 = 0
–   Wing 2.0a2179+16
−16		(+62)12.5 − 19.5
(+10−17=5)
39.1%
12.5 / 32
0.0%
−23
51.8%
2265
0.68
1173
0 0 0 0 1 0 0 0 0 0 0 = 0 = 0 0 1 0 1 0 1 1 1 1 1 = 0 1 1 = = 0
–   Uragano 3D 0.872174+16
−16		(+57)9.5 − 22.5
(+6−19=7)
29.7%
9.5 / 32
0.0%
−91
51.6%
2227
0.89
1149
1 = 0 1 0 0 0 0 0 = = 1 0 0 0 0 0 0 1 0 0 1 = = 0 1 0 = 0 0 = 0
–   Parrot 0707222161+17
−17		(+44)14.5 − 17.5
(+10−13=9)
45.3%
14.5 / 32
0.0%
+11
54.9%
1714
0.95
941
0 = 0 1 1 0 = = 0 = 1 0 1 1 0 = 0 0 1 = 0 0 0 1 = 0 = 0 = 1 1 1
–   Matheus 2.32144+15
−15		(+27)16 − 16
(+12−12=8)
50.0%
16.0 / 32
0.6%
+29
56.0%
2231
1.26
1249
1 1 0 = 1 = 0 1 = = 1 = 0 = 1 1 1 0 = 1 0 0 1 = 0 1 0 0 0 0 0 1
–   Bodo 0.2b2137+15
−15		(+20)11.5 − 20.5
(+10−19=3)
35.9%
11.5 / 32
3.5%
−93
53.7%
2076
0.81
1114
0 1 = 1 1 = 0 1 0 0 1 0 0 0 0 0 0 = 1 0 0 1 0 0 1 0 0 1 0 0 1 0
–   Monarch 1.72131+16
−16		(+14)17 − 15
(+15−13=4)
53.1%
17.0 / 32
10.1%
+38
49.1%
2401
1.61
1180
0 1 1 = 0 1 1 0 0 0 0 1 0 0 1 0 = 1 0 = 1 1 0 1 1 1 0 1 1 1 = 0
–   Bestia 0.902122+15
−15		(+5)15.5 − 16.5
(+11−12=9)
48.4%
15.5 / 32
33.9%
−5
56.7%
2252
0.90
1277
= = 0 = 1 0 = = 0 = 0 1 1 1 1 0 1 = = 1 1 0 1 0 1 0 = 0 0 0 0 1
–   Ax 0.82119+15
−15		(+2)12.5 − 19.5
(+9−16=7)
39.1%
12.5 / 32
43.9%
−75
  
0 0 0 0 1 = = 0 0 0 1 0 0 = 1 1 = = 0 0 0 = 1 0 1 = 1 1 0 0 1 0
–   Gerbil 02 64-bit JA2118+18
−18		(+1)19 − 13
(+15−9=8)
59.4%
19.0 / 32
47.2%
+67
51.4%
2145
1.06
1102
1 1 1 1 0 = 0 1 = 1 1 = 1 1 0 0 0 0 1 1 0 1 0 1 = 1 = = = 0 = 1
–   BigLion 2.23x2117+17
−17		(0)18 − 14
(+16−12=4)
56.3%
18.0 / 32
52.3%
+48
53.8%
2903
0.96
1563
0 1 1 = 0 1 0 1 = 1 1 1 0 0 0 0 0 1 1 0 1 1 0 1 0 0 1 1 1 1 = =
–   DelphiMax 2.92102+16
−16		(−15)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
92.4%
+63
54.2%
2512
0.95
1362
= 1 0 1 = 1 1 1 0 0 1 0 1 = 1 1 = = 1 0 0 1 1 1 0 0 0 1 = 1 = 1
–   Armageddon 2.3082098+17
−17		(−19)21.5 − 10.5
(+20−9=3)
67.2%
21.5 / 32
96.0%
+123
54.9%
2550
0.92
1399
1 1 1 0 0 0 = 0 1 0 1 1 1 1 1 1 1 1 1 1 0 1 = 0 = 1 0 1 1 1 0 1
–   Requiem 0.532084+15
−15		(−33)17 − 15
(+8−6=18)
53.1%
17.0 / 32
99.9%
−13
57.6%
967
0.81
557
= = = 1 1 = 0 1 1 = 0 = 0 = 0 0 = = 1 = = = = = 0 = 1 1 = = = 1
–   Small Potato 0.6.12082+16
−16		(−35)20 − 12
(+16−8=8)
62.5%
20.0 / 32
99.9%
+52
53.4%
2274
1.26
1214
0 1 = = 0 1 1 1 = 1 1 1 1 = 0 0 1 1 = 1 0 = 0 1 1 1 0 1 = = 0 1
–   Elephant 1.062075+16
−16		(−42)16 − 16
(+13−13=6)
50.0%
16.0 / 32
100.0%
−42
52.8%
2246
1.06
1185
= = 0 0 0 0 1 0 1 0 = 1 1 1 = 1 1 1 1 = 0 0 1 = 0 1 1 0 1 0 0 0
–   La Dame Blanche 2.0c2070+19
−19		(−47)19.5 − 12.5
(+18−11=3)
60.9%
19.5 / 32
100.0%
+42
52.1%
2022
1.17
1053
0 0 = 1 1 0 1 1 1 1 1 0 = 0 1 0 1 1 1 0 1 1 0 1 1 1 0 1 1 0 0 =
–   Cilian 4.142069+16
−16		(−48)17 − 15
(+13−11=8)
53.1%
17.0 / 32
100.0%
−25
  
0 1 1 = 1 = = 0 1 = 1 0 1 = = 1 1 0 = 1 0 1 0 1 0 0 = 0 0 0 1 1
–   Etude 0.1.22063+19
−19		(−54)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
+2
57.4%
2200
1.22
1263
0 1 = = 1 0 0 0 = = 0 1 1 = 1 0 1 1 1 0 0 1 1 1 = 0 1 0 1 = 1 1
–   Gullydeckel 2.16pl12062+19
−19		(−55)16 − 16
(+13−13=6)
50.0%
16.0 / 32
100.0%
−56
58.9%
2461
1.18
1450
= 0 1 0 0 = 1 1 0 1 0 0 1 1 0 1 0 = = 0 0 0 1 1 1 0 1 1 0 = 1 =
–   JanWillem 1.132062+16
−16		(−55)24 − 8
(+20−4=8)
75.0%
24.0 / 32
100.0%
+128
51.3%
2201
1.34
1129
0 1 1 = = 1 0 1 1 = 1 1 1 = 1 1 1 1 = 1 0 = 1 1 1 1 1 1 1 = 0 =
–   Marvin 1.3.02054+16
−16		(−63)19 − 13
(+14−8=10)
59.4%
19.0 / 32
100.0%
+1
56.1%
2155
1.07
1208
1 1 1 1 0 1 1 1 0 = 0 1 0 0 = 1 1 0 = 1 = = = = 1 0 = = = 1 1 0
–   Matant 5.042053+17
−17		(−64)17 − 15
(+16−14=2)
53.1%
17.0 / 32
100.0%
−37
53.0%
2191
0.56
1161
1 1 1 1 0 0 1 1 1 1 1 0 0 0 1 0 0 1 0 0 0 1 1 0 0 = 1 1 = 0 1 0
–   SSEChessII 2.05 DC2049+17
−17		(−68)18.5 − 13.5
(+17−12=3)
57.8%
18.5 / 32
100.0%
−4
56.9%
3398
1.32
1934
1 0 1 0 1 1 1 0 1 0 0 0 1 0 1 = 1 1 1 1 0 0 = 0 1 1 1 0 0 = 1 1
–   Faile 1.4.42042+15
−15		(−75)21 − 11
(+16−6=10)
65.6%
21.0 / 32
100.0%
+26
56.2%
2040
1.14
1146
= 1 1 1 = 1 = 1 = 1 1 1 1 1 1 1 0 1 1 0 = 1 = 0 = = 1 0 = 0 = 0
–   Smash 1.0.32036+17
−17		(−81)21 − 11
(+19−9=4)
65.6%
21.0 / 32
100.0%
+41
54.0%
2825
1.14
1526
0 1 0 0 1 0 1 1 1 1 1 = 1 1 1 = 1 1 1 = 0 1 0 1 0 1 1 1 = 1 0 0
–   Micro-Max 4.8 PIV DM2028+17
−17		(−89)22.5 − 9.5
(+19−6=7)
70.3%
22.5 / 32
100.0%
+61
75.3%
2799
1.43
2107
= 1 = 1 1 1 1 = = 1 0 1 1 1 1 0 1 1 1 1 = 0 1 1 0 1 = 1 0 1 0 =
–   Sharper 0.172022+16
−16		(−95)20.5 − 11.5
(+16−7=9)
64.1%
20.5 / 32
100.0%
+2
53.4%
2020
1.11
1078
1 0 1 1 1 0 1 0 1 1 = = 1 0 1 = 1 = 1 0 1 = 0 = 1 = = 1 = 0 1 1
–   Mustang 4.972021+17
−17		(−96)20.5 − 11.5
(+16−7=9)
64.1%
20.5 / 32
100.0%
+1
51.8%
1661
1.12
860
1 0 0 = 1 0 1 1 0 = 1 1 0 0 = 1 1 = 1 1 1 0 = 1 = = 1 1 = 1 = 1
–   Rival UCI 1.182021+17
−17		(−96)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
−41
54.5%
2134
1.23
1163
0 = 1 = 0 1 0 1 1 1 0 1 0 0 1 = 1 1 1 1 = 1 1 0 0 = 1 1 = 0 0 =
–   BibiChess 0.52007+16
−16		(−110)19.5 − 12.5
(+15−8=9)
60.9%
19.5 / 32
100.0%
−34
  
1 = = = 1 1 0 0 1 1 0 1 = 0 1 = 1 = 0 0 1 1 1 0 1 = = 1 1 0 = 1
–   IACH 0.56z1995+18
−18		(−122)26.5 − 5.5
(+24−3=5)
82.8%
26.5 / 32
100.0%
+145
66.1%
2341
1.35
1548
1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 = 1 1 1 = 1 0 1 1 = 1 1 = 1 1 = 1
–   Clueless 1.41990+18
−18		(−127)23.5 − 8.5
(+21−6=5)
73.4%
23.5 / 32
100.0%
+57
50.0%
2336
1.19
1167
= 1 = 1 1 1 1 0 1 = 1 1 1 1 1 1 0 1 = 0 1 = 0 1 1 1 0 1 1 1 1 0
–   Warrior 1.0.31987+17
−17		(−130)19 − 13
(+18−12=2)
59.4%
19.0 / 32
100.0%
−52
56.5%
2835
1.13
1601
1 1 = 1 0 0 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 1 1 1 0 1 1 1 0 1 1 =
–   Morphy 3.221974+17
−17		(−143)25.5 − 6.5
(+23−4=5)
79.7%
25.5 / 32
100.0%
+95
54.4%
2400
3.33
1306
1 = 1 1 1 1 0 0 1 = = 1 = 1 1 1 1 1 = 0 1 1 1 1 1 1 0 1 1 1 1 1
–   Soldat 0.25b1873+17
−17		(−244)26 − 6
(+24−4=4)
81.3%
26.0 / 32
100.0%
+17
50.7%
2172
1.26
1102
1 1 1 = 0 0 1 1 1 1 1 1 1 1 1 1 1 = 1 1 = 1 1 1 1 0 1 0 1 = 1 1
–   Elf 1.3.01820+18
−18		(−297)25.5 − 6.5
(+24−5=3)
79.7%
25.5 / 32
100.0%
−43
56.1%
2512
1.17
1408
1 1 1 = 0 1 = 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 = 0 1 1 0 1 0
–   Laurifer 1.01815+18
−18		(−302)24 − 8
(+21−5=6)
75.0%
24.0 / 32
100.0%
−109
56.2%
1709
0.70
961
1 1 1 1 1 = 0 0 1 = 1 = 0 0 1 0 = 1 1 1 1 1 1 1 1 1 1 1 1 = 1 =
1664 games in total: 689 wins, 635 losses, 340 draws (20.4%), score: 51.6%
Average opponent: −14.0 (2103), average distance to opponent: 86.2

Performance

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

Perf = C − 0.077 [±0.149] * 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