KCEC
(Kirr's Chess Engine Comparison)
A tournament of original free chess engines
October 30, 2009
Testing summary:
Total: 73'015 games
played by 115 programs
767 CPU days (X2 4600+)

White wins: 29'138 (39.9%)
Black wins: 24'564 (33.6%)
Draws: 19'313 (26.5%)
White score: 53.1%

Engine Details

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EXchess 5.01 beta 64-bit JA WB#78  (2349+16
−16		)Quote
Author: Daniel C. Homan (USA) Released: 2006-01-29Links: Homepage, Jim Ablett's compile
"JA" compile is created by Jim Ablett.
Issues with this engine: EXchess does not count the opening moves when a GUI opening book is used. This leads to incorrect time allocation and time trouble. (Bug details posted at Winboard forum). Still sometimes it loses on time.
This is one of the 2 EXchess versions we tested: Compare them!
OpponentELODiffResultsScoreLOSPerfPond
hit		Eval
diff
–   Quark 2.352530+15
−15		(+181)7.5 − 24.5
(+5−22=5)
23.4%
7.5 / 32
0.0%
−34
56.0%
2448
0.81
1371
0 0 = 0 = 0 0 0 0 0 0 = = 0 0 0 0 1 = 0 0 0 1 1 0 0 0 0 0 1 1 0
–   Dragon 4.62525+16
−16		(+176)9.5 − 22.5
(+3−16=13)
29.7%
9.5 / 32
0.0%
+45
58.6%
1436
0.60
841
0 = 0 0 1 = = = 0 0 0 0 0 0 0 = = 0 1 = = = 1 0 = 0 0 = 0 = = 0
–   Nejmet 3.072518+15
−15		(+169)11 − 21
(+7−17=8)
34.4%
11.0 / 32
0.0%
+55
56.6%
2302
0.71
1304
1 1 0 = = 0 1 0 = = = 1 0 0 0 0 1 1 1 0 = 0 0 0 = 0 0 = 0 0 0 0
–   Snitch 1.6.2 32-bit2513+15
−15		(+164)7.5 − 24.5
(+3−20=9)
23.4%
7.5 / 32
0.0%
−28
53.0%
1841
0.78
976
= 0 = 0 1 0 1 0 0 0 0 0 0 0 = 0 = 0 = = 0 0 0 0 0 = 0 0 = 0 1 =
–   KnightDreamer 3.32500+16
−17		(+151)6 − 26
(+3−23=6)
18.8%
6.0 / 32
0.0%
−98
58.0%
2413
0.61
1399
= 0 0 = 0 0 0 1 = 0 1 0 0 0 0 0 0 1 0 0 0 = 0 0 0 0 0 0 0 = 0 =
–   Francesca MAD 0.13 Nobook2493+18
−18		(+144)5 − 27
(+3−25=4)
15.6%
5.0 / 32
0.0%
−151
61.2%
2544
0.83
1558
= = = 0 1 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 = 0 0 0 0 0 0
–   Amy 0.8.7b DC2488+16
−16		(+139)10.5 − 21.5
(+7−18=7)
32.8%
10.5 / 32
0.0%
+12
55.5%
2557
0.80
1420
1 0 0 0 0 1 0 0 0 = 1 = 0 = 0 0 1 = 1 0 1 = 0 1 = 0 0 0 = 0 0 0
–   Djinn 0.925x2476+16
−16		(+127)12 − 20
(+8−16=8)
37.5%
12.0 / 32
0.0%
+36
54.9%
2443
0.71
1342
1 1 0 = 1 0 1 = = 0 0 1 0 = 1 = 0 0 = 0 0 0 1 0 = 0 0 1 0 0 = 0
–   Muse 0.899b2469+16
−16		(+120)9.5 − 22.5
(+7−20=5)
29.7%
9.5 / 32
0.0%
−42
53.9%
2451
0.76
1321
0 0 1 0 1 0 0 = 0 0 0 0 1 1 = 0 0 0 0 0 = 0 1 0 = = 1 0 0 0 0 1
–   Leila 0.53h2468+16
−16		(+119)9 − 23
(+6−20=6)
28.1%
9.0 / 32
0.0%
−50
56.9%
2261
1.10
1287
0 0 0 0 0 0 1 0 1 0 0 0 = 0 0 = 1 1 0 1 = = 0 0 0 = = 1 0 0 0 0
–   Comet B682467+14
−14		(+118)11.5 − 20.5
(+8−17=7)
35.9%
11.5 / 32
0.0%
+11
57.8%
2308
0.88
1335
0 1 0 0 1 0 = 1 1 0 0 = 0 0 1 0 0 0 = 0 = 0 0 1 1 1 0 0 = = = 0
–   Sjeng 12.132466+14
−14		(+117)13.5 − 18.5
(+10−15=7)
42.2%
13.5 / 32
0.0%
+59
54.3%
2293
0.86
1244
0 1 0 1 0 = 1 1 1 1 0 0 0 = 1 1 0 0 = 0 = 0 = 0 0 1 0 0 1 = = 0
–   The Crazy Bishop 00522459+16
−16		(+110)11 − 21
(+5−15=12)
34.4%
11.0 / 32
0.0%
+4
59.1%
1783
0.54
1054
= 0 = 0 0 1 1 0 0 0 1 = = 0 = 0 0 0 0 0 0 = = 1 = 0 = 0 = = 1 =
–   Der Bringer 1.92453+16
−15		(+104)12 − 20
(+8−16=8)
37.5%
12.0 / 32
0.0%
+11
59.9%
2256
0.57
1351
0 1 0 1 0 0 1 1 = = = = = 0 0 = 0 0 0 1 0 0 0 0 1 = 1 = 1 0 0 0
–   Betsy 6.51 Nobook2450+18
−18		(+101)10 − 22
(+6−18=8)
31.3%
10.0 / 32
0.0%
−38
60.0%
2612
0.61
1568
0 0 = 1 0 1 0 = 0 0 0 0 0 = 0 = 0 = 0 0 0 1 0 = 0 = 1 0 0 = 1 1
–   Amateur 2.822435+16
−16		(+86)9.5 − 22.5
(+6−19=7)
29.7%
9.5 / 32
0.0%
−66
58.0%
2146
1.02
1245
= 0 0 0 = 0 0 0 0 0 0 0 0 = 0 0 0 0 1 = 1 1 = = 0 1 0 = 0 1 0 1
–   Phalanx XXII Reborn JA2427+15
−15		(+78)11 − 21
(+7−17=8)
34.4%
11.0 / 32
0.0%
−35
57.1%
2448
0.66
1397
0 = = 0 = 1 0 = 1 0 0 1 0 1 0 0 = 0 0 = 0 = 1 = 1 1 0 0 0 0 0 0
–   Thor's Hammer 2.28 32-bit2416+17
−16		(+67)9 − 23
(+5−19=8)
28.1%
9.0 / 32
0.0%
−96
56.0%
2224
0.68
1246
0 0 = 0 0 0 = 0 1 1 = 0 = 0 0 1 = 1 = 0 0 0 0 0 1 = = 0 0 0 0 0
–   Chezzz 1.0.32406+17
−16		(+57)10.5 − 21.5
(+7−18=7)
32.8%
10.5 / 32
0.0%
−72
53.2%
2570
0.75
1368
= 1 0 0 = 0 0 0 0 0 1 = 0 = = = 1 0 0 1 0 1 0 0 1 1 0 0 0 = 0 0
–   Averno 0.812393+16
−16		(+44)14.5 − 17.5
(+11−14=7)
45.3%
14.5 / 32
0.0%
+9
55.8%
2468
0.68
1377
= 0 1 0 1 1 1 0 1 1 = 1 1 0 1 = 0 = 1 0 0 0 0 0 0 0 = = 0 1 = 0
–   Resp 0.19 64-bit JA Nobook2391+17
−17		(+42)10 − 22
(+5−17=10)
31.3%
10.0 / 32
0.0%
−88
59.1%
2546
0.54
1504
1 0 = 0 0 1 0 0 0 0 = 0 0 0 = 0 0 = 0 = = 1 = = 0 0 0 = 1 1 0 =
–   Scidlet 3.61 64-bit JA2370+16
−16		(+21)18 − 14
(+15−11=6)
56.3%
18.0 / 32
3.4%
+69
60.2%
2659
0.70
1602
0 1 0 0 1 1 = 1 = = 0 1 0 0 1 = = 1 0 1 0 1 0 1 = 1 1 1 0 1 1 0
–   KnightX 1.922369+17
−17		(+20)21.5 − 10.5
(+18−7=7)
67.2%
21.5 / 32
5.0%
+148
55.2%
2179
0.85
1202
= 1 1 1 1 = 1 1 1 1 1 1 0 1 = = 0 1 0 1 1 1 0 0 1 0 = 1 = = 0 1
–   Eeyore 1.482361+17
−17		(+12)17.5 − 14.5
(+12−9=11)
54.7%
17.5 / 32
15.5%
+43
58.2%
1952
0.89
1136
0 1 = 0 1 0 = = 0 = = = 1 1 1 = = 1 1 1 0 = 1 = 0 1 = 0 1 1 0 0
–   GNU Chess 5.07 64-bit JA Nobook2359+19
−19		(+10)18.5 − 13.5
(+16−11=5)
57.8%
18.5 / 32
22.9%
+70
52.8%
2539
1.02
1341
1 1 0 1 1 1 = = 1 1 0 0 1 1 = = 0 0 1 1 1 1 0 = 0 0 0 1 1 1 0 0
–   Esc 1.162326+17
−17		(−23)18 − 14
(+13−9=10)
56.3%
18.0 / 32
97.5%
+21
56.1%
2040
0.71
1145
= 1 0 0 1 1 1 = = = 0 0 = = 1 0 1 1 = 1 0 1 0 = 1 1 = 1 0 1 = 0
–   GNU Chess 5.07 64-bit JA2314+20
−19		(−35)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
99.7%
+74
51.6%
2074
0.64
1071
1 0 1 0 = 1 1 1 0 0 = 1 1 0 0 1 1 1 1 0 0 = 1 1 1 1 = 1 0 1 = 1
–   Dorky 3.482291+17
−18		(−58)14.5 − 17.5
(+8−11=13)
45.3%
14.5 / 32
100.0%
−92
57.4%
1894
1.27
1088
1 = 1 0 0 = 1 = = 1 0 = 0 = = = 0 0 1 0 0 = = 0 0 = 1 = 0 1 1 =
–   CyberPagno 2.1 32MB2284+18
−18		(−65)22 − 10
(+19−7=6)
68.8%
22.0 / 32
100.0%
+81
56.8%
2286
0.75
1298
= 0 1 1 0 1 = 1 = 0 1 1 0 1 1 0 1 1 = 1 1 1 1 1 = 1 1 = 0 1 0 1
–   Madeleine 0.22272+17
−17		(−77)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
100.0%
−64
52.5%
2311
0.87
1213
1 0 1 = 0 0 1 = 1 1 0 1 1 1 0 0 0 1 1 = 0 1 = 0 = 0 0 1 = 0 1 =
–   Chispa 4.0.32251+16
−16		(−98)24 − 8
(+18−2=12)
75.0%
24.0 / 32
100.0%
+69
53.9%
1824
1.09
983
1 1 1 = 1 = = = 0 0 1 = = = = 1 1 1 1 1 1 1 1 1 = 1 = = = 1 1 1
–   InmiChess 3.06N2223+17
−17		(−126)20 − 12
(+16−8=8)
62.5%
20.0 / 32
100.0%
−35
54.7%
1991
0.92
1089
1 1 1 0 0 = 1 1 0 1 1 = 0 1 1 = 1 1 = 1 = 1 = 1 1 0 = 1 0 0 = 0
–   Sunsetter C10.3 64-bit JA2210+19
−19		(−139)20.5 − 11.5
(+17−8=7)
64.1%
20.5 / 32
100.0%
−32
54.8%
2243
0.85
1229
0 0 1 1 0 0 1 1 = 0 = 1 1 1 1 0 1 0 1 = 1 = 0 1 1 1 1 = = 1 = 1
–   Nesik 0.7.0 alpha2210+18
−18		(−139)20.5 − 11.5
(+17−8=7)
64.1%
20.5 / 32
100.0%
−34
54.4%
2423
0.72
1319
1 1 1 = 0 1 = = 1 1 1 0 1 1 1 1 0 1 1 = 0 0 = 1 1 0 = = 0 1 1 0
–   WJChess 1.642204+19
−19		(−145)25 − 7
(+22−4=6)
78.1%
25.0 / 32
100.0%
+74
58.5%
2111
0.65
1234
1 = 0 1 1 1 = 1 = = 0 = 1 1 1 1 0 1 1 1 1 0 1 1 1 1 1 1 = 1 1 1
–   Fortress 1.622199+18
−18		(−150)23.5 − 8.5
(+20−5=7)
73.4%
23.5 / 32
100.0%
+26
55.6%
2372
0.82
1319
= 1 1 1 1 1 1 = = 1 1 1 = = 1 1 0 0 1 0 1 1 0 1 1 = 1 1 1 1 0 =
–   Gk 0.90 64-bit JA2161+19
−19		(−188)23 − 9
(+20−6=6)
71.9%
23.0 / 32
100.0%
−18
56.2%
2230
1.03
1253
1 = 1 1 = 1 1 1 1 1 = 1 1 = 1 1 0 = 1 0 1 0 0 1 1 1 0 1 = 0 1 1
–   Matheus 2.32132+19
−19		(−217)26.5 − 5.5
(+24−3=5)
82.8%
26.5 / 32
100.0%
+53
56.2%
2339
1.06
1314
1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 1 1 = = 1 0 1 1 1 1 = = = 1 1 1
–   Bestia 0.902104+19
−19		(−245)28 − 4
(+25−1=6)
87.5%
28.0 / 32
100.0%
+63
54.6%
2502
0.95
1365
1 1 1 1 1 = = 1 1 1 1 1 = 1 1 1 = = 1 1 1 1 0 1 = 1 1 1 1 1 1 1
–   Bodo 0.2b2104+20
−21		(−245)27 − 5
(+24−2=6)
84.4%
27.0 / 32
100.0%
+34
56.9%
1716
0.71
976
= 1 1 1 = 0 0 1 1 1 = 1 = 1 1 1 1 1 = 1 = 1 1 1 1 1 1 1 1 1 1 1
–   Bodo 0.2b Nobook2096+21
−21		(−253)23 − 9
(+21−7=4)
71.9%
23.0 / 32
100.0%
−72
54.0%
2532
0.73
1367
1 1 0 1 0 0 1 1 1 1 = 0 1 1 1 0 0 1 = 1 1 1 1 1 1 1 = = 1 1 1 0
–   DelphiMax 2.92084+21
−21		(−265)26.5 − 5.5
(+25−4=3)
82.8%
26.5 / 32
100.0%
+24
55.1%
2515
0.78
1386
1 1 1 1 0 1 1 1 1 0 1 0 1 1 1 1 1 = 1 1 = 1 1 1 1 1 1 1 1 = 0 1
–   Ax 0.82083+19
−19		(−266)26.5 − 5.5
(+24−3=5)
82.8%
26.5 / 32
100.0%
+5
76.8%
2215
2.46
1701
1 0 1 1 0 1 = 0 1 1 1 1 1 1 1 1 1 1 = 1 1 1 1 = 1 1 1 = 1 = 1 1
–   Faile 1.4.42021+19
−20		(−328)30.5 − 1.5
(+30−1=1)
95.3%
30.5 / 32
100.0%
+194
57.9%
2290
0.92
1326
1 1 1 1 1 0 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
–   Sharper 0.171973+24
−25		(−376)29.5 − 2.5
(+28−1=3)
92.2%
29.5 / 32
100.0%
+30
53.5%
2340
1.10
1252
1 1 1 1 = 1 1 1 1 1 1 1 0 = 1 1 1 1 = 1 1 1 1 1 1 1 1 1 1 1 1 1
–   Soldat 0.25b1878+24
−25		(−471)29.5 − 2.5
(+27−0=5)
92.2%
29.5 / 32
100.0%
−96
51.8%
1683
0.91
872
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
1472 games in total: 620 wins, 531 losses, 321 draws (21.8%), score: 53.0%
Average opponent: −31.1 (2317.9), average distance to opponent: 138.8

Performance

This figure shows how this engine performs depending on how strong is the opponent. X axis shows opponent's rating relative to engine's own rating. Y axis shows engine's performance in a match. Each dot represents one match of this engine. Green line shows the average opponent's rating. Blue line is a linear regression:

Perf = C − 0.079 [±0.119] * 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 2005-2009 by Kirill Kryukov
Last games added on October 30, 2009