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
Yace 0.99.87 UCI#40  (2609+17
−17
)Quote
Author: Dieter Burssner (Germany) Released: 2004-06-10Link: Yace Archive Page
This engine is stable and runs without issues.
This is the only Yace version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Alfil 8.1.1 Optimized2723+21
−21
(+114)8 − 20
(+4−16=8)
28.6%
8.0 / 28
0.0%
−32
62.7%
1640
0.61
1029
0 0 1 0 0 = = 0 1 0 0 = 0 = 0 0 1 = 0 = 0 0 0 0 = = 0 1
–   Frenzee 3.0 64-bit2711+19
−19
(+102)11 − 14
(+7−10=8)
44.0%
11.0 / 25
0.0%
+62
51.2%
1819
0.90
932
= = = = 0 1 = 1 0 1 0 0 1 0 0 0 0 = = 1 0 0 1 1 =
–   Ruffian 1.0.52687+17
−17
(+78)9.5 − 15.5
(+5−11=9)
38.0%
9.5 / 25
0.0%
+3
58.7%
1472
0.63
864
0 1 = 1 0 0 0 0 = 0 1 1 = 0 0 = 1 0 = = 0 = 0 = =
–   Petir 4.392682+18
−18
(+73)10 − 13
(+7−10=6)
43.5%
10.0 / 23
0.0%
+31
59.0%
1623
0.46
958
0 1 0 0 = = 1 1 0 0 1 0 1 = = 0 0 = 1 0 = 1 0
–   Pseudo 0.7c2680+18
−18
(+71)7 − 19
(+2−14=10)
26.9%
7.0 / 26
0.0%
−78
62.0%
1283
0.41
796
0 0 0 = = 0 = = 1 = 0 = 0 = 0 1 0 0 0 0 = = 0 = 0 0
–   Aristarch 4.502671+18
−18
(+62)13 − 18
(+8−13=10)
41.9%
13.0 / 31
0.0%
+8
53.7%
1560
1.01
837
1 0 0 1 1 = = = 0 1 1 = 0 1 = = 1 0 = 0 0 = 0 0 = = 1 0 0 0 0
–   Petir 4.9999992670+19
−19
(+61)13.5 − 12.5
(+7−6=13)
51.9%
13.5 / 26
0.0%
+72
61.0%
1068
0.52
651
0 1 0 0 1 0 = = = = 1 1 1 = = = = 0 1 = 1 = = 0 = =
–   Hamsters 0.62669+18
−18
(+60)14 − 14
(+10−10=8)
50.0%
14.0 / 28
0.0%
+57
54.2%
1931
0.52
1046
0 = 0 = = 1 0 1 1 1 0 1 1 0 = = 0 0 = 0 = 1 1 = 1 1 0 0
–   The Baron 2.23 64-bit2669+19
−19
(+60)14.5 − 17.5
(+10−13=9)
45.3%
14.5 / 32
0.0%
+28
58.2%
1998
0.84
1162
1 = 0 0 = 0 = 1 1 0 1 1 0 0 0 0 1 1 = 0 = = 0 = 0 1 = = 0 0 1 1
–   Booot 4.13.12668+18
−18
(+59)10.5 − 15.5
(+8−13=5)
40.4%
10.5 / 26
0.0%
−17
57.3%
2364
0.72
1354
= 0 0 0 0 1 1 0 0 0 0 1 1 0 = = = 0 0 1 1 1 = 0 0 1
–   BugChess2 1.5.22661+18
−18
(+52)11.5 − 9.5
(+8−6=7)
54.8%
11.5 / 21
0.0%
+86
60.5%
1427
0.52
864
1 = 1 0 = = 1 = 1 0 1 0 0 = 0 = 1 = 0 1 1
–   Jonny 2.832652+17
−17
(+43)11.5 − 14.5
(+8−11=7)
44.2%
11.5 / 26
0.0%
+6
55.0%
1879
0.69
1033
0 = 1 0 = 0 1 1 0 1 = 1 0 1 0 = 1 = 1 = = 0 0 0 0 0
–   Crafty 21.5 64-bit PS2652+17
−17
(+43)9.5 − 15.5
(+5−11=9)
38.0%
9.5 / 25
0.0%
−35
57.2%
1583
0.70
906
0 = 0 = = = = 0 0 0 1 = 1 0 = 0 = 0 1 1 0 = 0 0 1
–   The Baron 1.8.12651+18
−18
(+42)8.5 − 16.5
(+6−14=5)
34.0%
8.5 / 25
0.0%
−74
58.6%
1859
0.90
1090
= 0 1 1 0 = = 1 = 0 0 1 0 0 0 1 1 0 0 0 0 0 = 0 0
–   Anaconda 2.0.12644+17
−17
(+35)7 − 16
(+3−12=8)
30.4%
7.0 / 23
0.1%
−94
58.9%
1216
0.67
716
0 0 = 1 = = = 0 = = 0 0 1 0 0 0 0 1 0 = = 0 0
–   Movei 00.8.4032643+22
−22
(+34)12.5 − 10.5
(+10−8=5)
54.3%
12.5 / 23
0.5%
+66
56.6%
1662
0.51
941
= 1 1 1 1 1 = 0 1 = 0 0 = 1 0 0 0 = 0 1 0 1 1
–   Fritz 5.322643+17
−17
(+34)12 − 14
(+9−11=6)
46.2%
12.0 / 26
0.1%
+9
61.6%
2167
0.52
1335
1 = = 0 0 0 = = 0 = 1 0 0 0 0 1 1 1 0 1 1 1 0 = 0 1
–   Ktulu 4.22634+17
−17
(+25)14.5 − 12.5
(+9−7=11)
53.7%
14.5 / 27
1.5%
+48
59.7%
1464
0.64
874
1 = = 0 1 0 = = 0 1 1 1 0 1 = 0 0 = 1 = = 1 = = 0 = 1
–   Thinker 4.7a2634+17
−17
(+25)13.5 − 13.5
(+10−10=7)
50.0%
13.5 / 27
1.3%
+27
57.2%
2205
0.51
1262
= 1 1 0 = 0 0 1 0 0 0 = 1 1 0 = 0 0 = 1 1 1 1 = 1 = 0
–   SmarThink 0.17a2633+16
−16
(+24)11.5 − 15.5
(+7−11=9)
42.6%
11.5 / 27
1.6%
−25
59.5%
1454
0.65
865
0 0 1 1 1 = 1 0 0 = 0 0 0 = = = = 1 0 0 0 = = 1 1 0 =
–   Ufim 8.022628+18
−18
(+19)11 − 14
(+8−11=6)
44.0%
11.0 / 25
5.1%
−20
57.1%
1791
0.73
1022
0 1 0 1 1 1 1 1 0 = 0 0 1 0 0 0 0 = 1 = = = 0 0 =
–   Fritz 6 Light2627+19
−19
(+18)13 − 15
(+7−9=12)
46.4%
13.0 / 28
7.3%
−4
62.3%
1622
0.53
1011
= = 0 0 1 = 0 0 = 0 1 1 0 1 1 = = 0 0 = 0 1 = 1 = = = =
–   Trace 1.37a2622+17
−17
(+13)12.5 − 11.5
(+7−6=11)
52.1%
12.5 / 24
12.0%
+28
58.7%
1283
0.55
753
= = 1 1 0 0 = 1 1 1 = 1 0 = = 1 = = = 0 = 0 0 =
–   AnMon 5.602621+18
−18
(+12)9.5 − 11.5
(+6−8=7)
45.2%
9.5 / 21
15.3%
−21
58.5%
1445
0.48
845
1 1 = = = 0 0 = = 0 1 0 1 = 0 0 0 1 1 = 0
–   E.T. Chess 18.11.052620+21
−21
(+11)11.5 − 14.5
(+8−11=7)
44.2%
11.5 / 26
19.8%
−31
54.1%
1832
0.58
991
1 0 0 = = 0 = = 1 0 0 1 0 0 0 1 1 1 = 0 0 = = 1 0 1
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17
(+5)16 − 15
(+13−12=6)
51.6%
16.0 / 31
33.0%
+15
57.6%
2498
0.71
1440
1 = 1 1 0 = 0 1 0 0 1 = 1 1 = 0 0 = 0 1 0 1 1 0 1 1 = 0 0 0 1
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19
(−2)16.5 − 10.5
(+13−7=7)
61.1%
16.5 / 27
55.5%
+72
54.6%
1989
0.77
1085
0 = 0 1 1 0 1 = 1 = 1 1 1 0 0 = = = 0 = 0 1 1 1 1 1 1
–   Hamsters 0.52595+21
−21
(−14)11 − 14
(+8−11=6)
44.0%
11.0 / 25
85.7%
−54
59.7%
2024
0.49
1209
= 0 = = 1 1 0 = = 0 = 1 0 1 0 1 0 0 0 0 1 0 1 0 1
–   Pepito 1.59 32-bit2595+19
−19
(−14)11 − 15
(+9−13=4)
42.3%
11.0 / 26
87.1%
−70
60.7%
2428
0.49
1475
1 0 1 = 0 1 0 = 0 0 0 1 0 0 0 1 0 1 = 1 = 1 1 0 0 0
–   Bruja 1.9 64-bit JA No-int-book2584+18
−18
(−25)14.5 − 14.5
(+11−11=7)
50.0%
14.5 / 29
98.4%
−22
58.0%
2064
0.56
1197
1 1 1 1 0 = 0 1 0 0 = = = 1 1 = 0 0 = 0 0 = 0 0 1 1 0 1 1
–   Green Light Chess 3.002582+17
−17
(−27)13 − 12
(+10−9=6)
52.0%
13.0 / 25
99.1%
−14
60.5%
1899
0.51
1148
0 1 0 0 0 1 1 1 = 1 = 0 0 1 1 0 = = 0 = 0 1 1 1 =
–   Tao 5.62574+17
−17
(−35)16.5 − 9.5
(+12−5=9)
63.5%
16.5 / 26
99.9%
+55
57.1%
1408
0.63
804
= 0 1 = 1 = 1 1 1 1 0 1 = 0 = 0 = = 0 1 = 1 = 1 1 1
–   Cerebro 3.03d2572+19
−19
(−37)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
99.9%
+71
54.9%
2338
0.68
1284
0 0 1 = 1 1 1 1 0 1 1 1 1 1 0 0 1 1 1 1 = 1 1 1 0 = 1 0 0 0 = =
–   Twisted Logic 20080404x2568+18
−18
(−41)15 − 12
(+12−9=6)
55.6%
15.0 / 27
100.0%
−3
54.7%
1823
0.68
997
= 0 1 1 = 1 0 1 0 1 0 1 0 1 = = 1 0 1 0 0 0 = 1 1 = 1
–   Arasan 10.0 64-bit2564+17
−17
(−45)11 − 15
(+6−10=10)
42.3%
11.0 / 26
100.0%
−91
62.0%
1583
0.65
982
= 1 0 0 = 0 = 1 1 1 0 = 1 0 0 = 0 1 = = = = 0 0 0 =
–   Abrok 5.02561+17
−17
(−48)14.5 − 11.5
(+8−5=13)
55.8%
14.5 / 26
100.0%
−16
59.4%
1201
0.50
713
= 1 1 = 0 = 1 = 1 = = = 0 = 1 1 = 1 1 = = = 0 0 = 0
–   Amyan 1.5972552+17
−17
(−57)11.5 − 11.5
(+10−10=3)
50.0%
11.5 / 23
100.0%
−50
56.6%
2237
0.47
1267
0 = 0 1 1 1 1 0 1 0 1 0 0 0 = 1 1 0 1 1 0 0 =
–   Matacz 1.3 HT74 5-men-egbb2551+18
−18
(−58)11 − 12
(+7−8=8)
47.8%
11.0 / 23
100.0%
−74
60.3%
1667
0.58
1005
= = = 0 1 1 1 0 1 0 = = = 0 0 0 1 0 = 0 1 = 1
–   SpiderChess 0706032546+17
−17
(−63)13 − 11
(+8−6=10)
54.2%
13.0 / 24
100.0%
−37
60.0%
1414
0.51
848
0 0 = 0 = = 0 1 = 1 = 1 1 0 = 1 = 1 1 0 = = = 1
–   Quark 2.352536+16
−16
(−73)16 − 8
(+13−5=6)
66.7%
16.0 / 24
100.0%
+48
57.4%
1708
0.65
981
1 1 1 = = 0 1 0 0 1 1 = 1 = = 0 1 1 0 1 1 = 1 1
–   Gaia 3.5 64-bit2536+17
−17
(−73)18.5 − 13.5
(+15−10=7)
57.8%
18.5 / 32
100.0%
−16
56.8%
2762
0.71
1570
1 = 1 = 0 0 = 0 = 1 0 1 = 1 = 1 1 1 1 0 0 1 1 = 0 0 0 1 1 0 1 1
–   King of Kings 2.562536+18
−18
(−73)16.5 − 10.5
(+12−6=9)
61.1%
16.5 / 27
100.0%
0
55.6%
1929
0.65
1073
1 = = = = 0 = 1 = 1 1 1 1 0 = 1 0 1 1 = 1 1 0 0 1 0 =
–   LambChop 10.992531+17
−17
(−78)17 − 7
(+13−3=8)
70.8%
17.0 / 24
100.0%
+59
60.5%
1579
0.47
955
1 1 = = 1 1 = 1 1 = 1 = = 1 1 1 1 1 = 1 0 0 0 =
–   Dragon 4.62524+16
−16
(−85)16.5 − 11.5
(+13−8=7)
58.9%
16.5 / 28
100.0%
−24
61.2%
2048
0.59
1254
= = 0 0 1 1 1 1 0 = = 1 = 1 1 1 0 = 0 0 = 1 0 1 1 1 0 1
–   Nejmet 3.072521+16
−16
(−88)20 − 8
(+18−6=4)
71.4%
20.0 / 28
100.0%
+78
58.2%
2368
0.55
1379
0 = 0 0 1 1 1 1 1 1 0 1 0 1 = = 1 1 1 1 1 1 0 = 1 1 1 1
–   Snitch 1.6.2 32-bit2521+15
−15
(−88)19 − 7
(+15−3=8)
73.1%
19.0 / 26
100.0%
+70
59.8%
1743
0.48
1042
1 1 1 0 1 1 1 1 = 1 1 1 0 = = = = 1 1 0 1 1 = = 1 =
–   Amy 0.8.7b DC2500+17
−17
(−109)15 − 10
(+11−6=8)
60.0%
15.0 / 25
100.0%
−42
58.7%
1744
0.56
1024
0 0 1 0 = = = = 1 1 = 0 1 1 1 1 1 1 = 0 = 1 = 1 0
–   KnightDreamer 3.32499+16
−16
(−110)18 − 9
(+14−5=8)
66.7%
18.0 / 27
100.0%
+6
58.9%
2063
0.50
1216
= 1 = 1 = 1 1 1 1 1 0 1 = 1 0 0 1 1 1 0 = 1 1 = = = 0
–   Comet B682478+14
−14
(−131)16 − 10
(+13−7=6)
61.5%
16.0 / 26
100.0%
−52
58.9%
1514
0.65
892
= 1 1 1 1 1 1 0 = 0 1 1 1 = = 0 = 1 0 = 1 1 0 1 0 0
–   Sjeng 12.132475+14
−14
(−134)19 − 9
(+15−5=8)
67.9%
19.0 / 28
100.0%
−11
60.6%
1532
0.59
928
= 1 0 1 = = 1 1 0 1 0 = = 1 = 1 1 0 1 = 1 1 0 1 1 1 = 1
–   Der Bringer 1.92455+15
−15
(−154)18 − 8
(+14−4=8)
69.2%
18.0 / 26
100.0%
−26
59.4%
1631
0.41
968
1 1 1 1 1 = 1 = 1 = 0 0 1 = = = 1 1 1 1 = 0 = 0 1 1

Performance

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

Perf = C + 0.088 [±0.205] * 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