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
BugChess2 1.5.2 WB#28  (2661+18
−18
)Quote
Authors: Francois Karr (France), Jean-Philippe Karr (France) Released: 2007-10-14Link: WBEC
This engine is stable and runs without issues.
This is the only BugChess version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   E.T. Chess 13.01.082733+21
−21
(+72)10.5 − 12.5
(+6−8=9)
45.7%
10.5 / 23
0.0%
+46
60.0%
1536
0.66
922
= 1 = = 0 0 = 1 = 0 1 = 0 0 1 0 0 = 1 1 = = 0
–   Alfil 8.1.1 Optimized2723+21
−21
(+62)9 − 20
(+7−18=4)
31.0%
9.0 / 29
0.0%
−84
58.6%
2395
0.53
1404
0 1 0 1 0 0 0 0 = 1 0 1 0 = 0 1 0 = 0 0 0 0 1 = 0 0 0 1 0
–   Pro Deo 1.62719+22
−22
(+58)11 − 12
(+8−9=6)
47.8%
11.0 / 23
0.0%
+46
55.1%
1609
0.58
886
1 0 1 = = 1 = 0 = 0 0 1 0 1 0 0 1 1 0 0 = 1 =
–   Delfi 5.22718+21
−21
(+57)10.5 − 17.5
(+7−14=7)
37.5%
10.5 / 28
0.0%
−31
60.1%
2325
0.55
1398
1 0 = 0 = = 0 0 0 1 = 0 1 = 1 0 1 1 0 0 0 = 1 0 0 0 = 0
–   WildCat 72718+19
−19
(+57)7.5 − 19.5
(+5−17=5)
27.8%
7.5 / 27
0.0%
−107
56.2%
2334
0.81
1312
1 = 0 0 0 1 0 0 0 1 0 0 0 1 = 0 = 0 = 0 0 = 0 0 0 0 1
–   Zappa 1.1 64-bit2717+19
−19
(+56)9.5 − 13.5
(+7−11=5)
41.3%
9.5 / 23
0.0%
−10
53.9%
2206
0.82
1190
= 0 0 0 0 0 0 1 1 = 1 0 0 1 1 = = 0 = 1 1 0 0
–   Slow Chess Blitz WV2.12716+19
−19
(+55)8.5 − 17.5
(+4−13=9)
32.7%
8.5 / 26
0.0%
−61
57.7%
1464
0.79
844
0 = = 0 = 0 = = 0 0 0 0 0 1 = 0 1 = 1 1 0 = 0 0 0 =
–   Frenzee 3.0 64-bit2711+19
−19
(+50)14.5 − 14.5
(+11−11=7)
50.0%
14.5 / 29
0.0%
+51
55.3%
2212
0.83
1224
1 1 = = 0 0 = 0 1 = 1 0 1 = = 1 0 0 1 0 1 1 0 1 0 0 0 = 1
–   Colossus 2007d2707+20
−20
(+46)8.5 − 20.5
(+4−16=9)
29.3%
8.5 / 29
0.0%
−96
58.0%
1780
0.55
1032
1 = 0 1 0 = 0 = = 0 = = 0 0 0 0 = = 0 = 0 1 0 0 0 0 0 1 0
–   Pharaon 3.5.12704+19
−19
(+43)11 − 14
(+8−11=6)
44.0%
11.0 / 25
0.0%
−2
57.4%
1882
0.66
1081
0 1 0 = = 0 1 = = 0 1 1 0 0 0 1 0 = 0 1 = 1 0 0 1
–   List 5.122699+18
−18
(+38)13 − 9
(+8−4=10)
59.1%
13.0 / 22
0.1%
+95
55.8%
996
0.71
556
= = = = 1 1 1 0 = = = = 1 1 = = 0 0 1 0 1 1
–   SOS 5.12697+18
−18
(+36)12.5 − 15.5
(+7−10=11)
44.6%
12.5 / 28
0.1%
0
54.5%
1575
0.76
858
0 = = 0 = 1 = 1 0 1 1 = 0 = 0 0 0 = 0 1 0 = = = 1 = 0 1
–   Colossus 2007c2694+19
−19
(+33)7 − 19
(+3−15=8)
26.9%
7.0 / 26
0.3%
−126
58.3%
1659
0.65
968
= 0 1 1 = 0 = 0 0 = 0 = 1 0 0 0 0 0 = 0 0 0 0 = 0 =
–   Ruffian 1.0.52687+17
−17
(+26)12.5 − 11.5
(+9−8=7)
52.1%
12.5 / 24
1.0%
+43
56.1%
1625
0.63
911
= = 0 0 1 0 = 0 0 1 = 1 = 1 1 1 1 0 1 0 = 0 1 =
–   Petir 4.392682+18
−18
(+21)17.5 − 5.5
(+13−1=9)
76.1%
17.5 / 23
4.0%
+187
60.1%
1317
0.61
792
1 1 = 1 = = 1 = 1 = 1 = = 1 1 = 1 1 = 1 0 1 1
–   Pseudo 0.7c2680+18
−18
(+19)8.5 − 13.5
(+7−12=3)
38.6%
8.5 / 22
5.1%
−71
58.4%
1876
0.53
1096
0 0 0 0 1 = 0 1 = 1 0 0 1 1 1 0 0 0 1 = 0 0
–   Aristarch 4.502671+18
−18
(+10)12.5 − 13.5
(+9−10=7)
48.1%
12.5 / 26
19.0%
−7
53.8%
1711
1.19
920
= 1 0 = 0 1 0 1 0 1 = 0 = 0 0 0 0 1 0 = 1 1 1 = = 1
–   Petir 4.9999992670+19
−19
(+9)7.5 − 10.5
(+5−8=5)
41.7%
7.5 / 18
23.5%
−43
51.6%
1757
0.83
906
= 0 0 1 = 1 1 = 0 1 = 0 = 0 0 1 0 0
–   Hamsters 0.62669+18
−18
(+8)11.5 − 14.5
(+7−10=9)
44.2%
11.5 / 26
24.0%
−31
60.3%
1843
0.52
1112
0 = 1 0 0 0 = = 0 1 = 0 0 0 0 1 1 = 1 = 1 1 = 0 = =
–   The Baron 2.23 64-bit2669+19
−19
(+8)16 − 16
(+12−12=8)
50.0%
16.0 / 32
23.9%
+8
58.8%
2103
0.84
1236
1 = 0 = 0 1 = = 1 1 0 1 0 1 = 1 = 1 = 1 0 1 0 0 0 0 1 0 0 = 0 1
–   Booot 4.13.12668+18
−18
(+7)14 − 13
(+8−7=12)
51.9%
14.0 / 27
27.8%
+15
56.0%
1738
0.59
974
1 = = = 1 0 1 = = 0 1 1 = = = = = 0 1 0 = 1 = 0 0 1 0
–   Jonny 2.832652+17
−17
(−9)9 − 13
(+7−11=4)
40.9%
9.0 / 22
79.3%
−78
57.9%
1536
0.66
889
0 0 = 1 0 = 0 0 0 1 1 = = 0 0 0 0 0 1 1 1 1
–   Crafty 21.5 64-bit PS2652+17
−17
(−9)11 − 12
(+8−9=6)
47.8%
11.0 / 23
77.4%
−23
57.3%
1806
0.83
1034
1 1 = 0 1 0 1 = 1 0 0 1 = = 0 1 0 = 0 1 = 0 0
–   The Baron 1.8.12651+18
−18
(−10)15 − 12
(+13−10=4)
55.6%
15.0 / 27
80.2%
+37
56.1%
2145
0.86
1203
0 0 0 0 1 = 0 0 1 1 1 1 1 = 0 1 0 1 = 1 0 0 = 1 1 1 1
–   Anaconda 2.0.12644+17
−17
(−17)14 − 12
(+9−7=10)
53.8%
14.0 / 26
92.7%
+5
60.4%
1584
0.71
957
1 = 1 = 0 0 1 1 = 0 = = 0 0 = 1 = 1 1 1 0 = 1 = 0 =
–   Fritz 5.322643+17
−17
(−18)19 − 9
(+14−4=10)
67.9%
19.0 / 28
94.0%
+95
58.7%
2269
0.60
1332
= 1 1 1 1 0 1 1 = 0 = 1 0 = 1 1 1 1 = = 1 = 1 1 = 0 = =
–   Ktulu 4.22634+17
−17
(−27)16.5 − 9.5
(+13−6=7)
63.5%
16.5 / 26
99.0%
+69
56.1%
2206
0.77
1238
1 1 = 1 1 1 1 0 0 = 1 1 0 1 = = 1 1 0 1 = = 0 1 = 0
–   Thinker 4.7a2634+17
−17
(−27)12 − 15
(+8−11=8)
44.4%
12.0 / 27
99.1%
−67
55.0%
2125
0.60
1169
1 = 1 0 0 1 0 1 0 1 = = 0 0 = 1 = 0 = 1 0 0 0 = 0 1 =
–   SmarThink 0.17a2633+16
−16
(−28)16 − 12
(+11−7=10)
57.1%
16.0 / 28
99.4%
+19
56.3%
1623
0.59
913
= 0 = 0 = 0 = 1 0 1 = 1 = 1 1 = 0 = 1 1 1 = 1 0 1 = 1 0
–   Ufim 8.022628+18
−18
(−33)9 − 17
(+5−13=8)
34.6%
9.0 / 26
99.8%
−138
56.9%
1795
0.95
1021
0 0 = = 0 0 0 1 1 = 0 1 = = 0 = 0 1 1 0 0 = 0 0 0 =
–   Fritz 6 Light2627+19
−19
(−34)14 − 10
(+11−7=6)
58.3%
14.0 / 24
99.7%
+28
63.0%
1964
0.55
1237
= = 1 0 1 0 1 1 0 = 1 1 1 = 0 = 0 0 1 = 1 0 1 1
–   Trace 1.37a2622+17
−17
(−39)15 − 12
(+9−6=12)
55.6%
15.0 / 27
100.0%
−4
53.9%
1781
0.59
960
0 0 0 1 = = 0 1 = 0 1 = 1 = 1 = 1 = = = = = = 0 1 1 1
–   AnMon 5.602621+18
−18
(−40)16 − 10
(+13−7=6)
61.5%
16.0 / 26
100.0%
+41
55.9%
1992
0.58
1114
0 1 0 = 1 1 1 0 1 1 = = 0 1 1 = 1 1 0 0 1 = 0 1 = 1
–   E.T. Chess 18.11.052620+21
−21
(−41)14.5 − 13.5
(+10−9=9)
51.8%
14.5 / 28
99.9%
−29
57.5%
1738
0.75
1000
0 = = = = 1 = 0 1 1 0 1 1 1 0 1 1 = 0 0 0 1 0 0 = 1 = =
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17
(−47)19 − 9
(+15−5=8)
67.9%
19.0 / 28
100.0%
+76
49.1%
2121
0.84
1042
0 = 1 1 1 1 1 1 0 = = 1 1 1 0 1 = 0 1 = 1 = 1 0 = 1 = 1
–   Yace 0.99.872609+17
−17
(−52)9.5 − 11.5
(+6−8=7)
45.2%
9.5 / 21
100.0%
−86
60.5%
1427
0.52
864
0 = 0 1 = = 0 = 0 1 0 1 1 = 1 = 0 = 1 0 0
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19
(−54)14.5 − 13.5
(+12−11=5)
51.8%
14.5 / 28
100.0%
−41
48.3%
2366
1.00
1143
1 1 0 0 = = = 0 1 0 1 1 1 0 1 0 = 1 1 = 0 0 0 0 1 1 1 0
–   Hamsters 0.52595+21
−21
(−66)16.5 − 6.5
(+15−5=3)
71.7%
16.5 / 23
100.0%
+105
61.1%
2158
0.47
1318
1 1 1 1 1 1 = 0 1 0 0 1 0 1 1 = 1 1 1 = 1 1 0
–   Pepito 1.59 32-bit2595+19
−19
(−66)17 − 9
(+13−5=8)
65.4%
17.0 / 26
100.0%
+41
56.3%
2155
0.61
1213
0 1 = 1 1 = 0 = = = 1 1 0 1 1 = 0 1 1 = = 1 0 1 1 1
–   Bruja 1.9 64-bit JA No-int-book2584+18
−18
(−77)16 − 8
(+15−7=2)
66.7%
16.0 / 24
100.0%
+58
52.5%
2210
0.68
1161
1 0 1 1 0 0 0 1 0 1 1 1 0 1 1 = 1 1 1 1 0 1 1 =
–   Green Light Chess 3.002582+17
−17
(−79)12.5 − 13.5
(+8−9=9)
48.1%
12.5 / 26
100.0%
−89
55.0%
1758
0.50
967
0 = = 0 0 = 1 = = 1 1 0 = 1 0 1 = = 1 = 1 0 0 1 0 0
–   Tao 5.62574+17
−17
(−87)17 − 8
(+15−6=4)
68.0%
17.0 / 25
100.0%
+53
54.4%
2525
0.57
1373
1 1 1 1 1 0 0 0 1 1 1 1 = = = 1 = 1 0 0 1 1 0 1 1
–   Twisted Logic 20080404x2568+18
−18
(−93)22.5 − 6.5
(+20−4=5)
77.6%
22.5 / 29
100.0%
+123
53.7%
2860
0.69
1537
= 0 1 1 1 = 1 1 1 1 1 1 1 1 = 0 1 1 = 1 1 1 1 1 0 = 1 0 1
–   Arasan 10.0 64-bit2564+17
−17
(−97)17 − 6
(+15−4=4)
73.9%
17.0 / 23
100.0%
+87
60.7%
1825
0.59
1108
1 0 0 1 = 1 1 = 1 1 = 1 1 1 1 1 = 1 0 1 1 0 1
–   Abrok 5.02561+17
−17
(−100)14 − 12
(+9−7=10)
53.8%
14.0 / 26
100.0%
−74
56.7%
1986
0.58
1126
= 1 1 = 0 1 1 1 = = 0 0 = 0 = 1 = 1 = 1 0 = 0 1 0 =
–   Amyan 1.5972552+17
−17
(−109)19 − 11
(+15−7=8)
63.3%
19.0 / 30
100.0%
−14
57.8%
2547
0.44
1473
1 1 1 0 = 0 1 = = 1 0 = 1 1 = 1 1 1 1 0 1 0 = 1 0 0 = = 1 1
–   Matacz 1.3 HT74 5-men-egbb2551+18
−18
(−110)11 − 10
(+9−8=4)
52.4%
11.0 / 21
100.0%
−86
56.6%
1964
0.55
1111
1 1 = = 1 1 0 = 0 0 1 0 0 = 1 0 1 0 1 0 1
–   LambChop 10.992531+17
−17
(−130)15 − 6
(+11−2=8)
71.4%
15.0 / 21
100.0%
+7
52.9%
1829
0.67
968
0 1 = 1 1 1 1 1 0 = = = 1 = 1 = = 1 = 1 1
–   Comet B682478+14
−14
(−183)23 − 4
(+21−2=4)
85.2%
23.0 / 27
100.0%
+110
58.0%
1871
0.65
1086
1 0 1 1 1 1 = 1 1 1 = 1 1 1 1 1 0 1 1 1 = 1 = 1 1 1 1
–   Sjeng 12.132475+14
−14
(−186)19.5 − 6.5
(+17−4=5)
75.0%
19.5 / 26
100.0%
+4
56.3%
2185
0.69
1231
1 1 0 = = 1 0 0 1 1 0 1 = 1 1 1 1 1 1 1 1 1 = 1 = 1

Performance

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

Perf = C − 0.201 [±0.312] * 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