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
SmarThink 0.17a WB#35  (2633+16
−16
)Quote
Author: Sergei Markoff (Russia) Released: 2003-10-01Links: Homepage, Lokasoft
0.17a is the last free version of SmarThink. SmarThink 0.17a has problems checkmating with superior material, for example with two queens versus a bare king.
This engine is stable and runs without issues.
This is the only SmarThink version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Glaurung 1.2.1 64-bit2770+24
−24
(+137)9 − 23
(+6−20=6)
28.1%
9.0 / 32
0.0%
−27
53.6%
2229
0.71
1194
0 1 0 = 0 = = 1 0 0 1 0 = 0 0 1 0 0 0 0 0 = 0 0 0 1 0 0 = 0 0 1
–   WildCat 72718+19
−19
(+85)14 − 18
(+10−14=8)
43.8%
14.0 / 32
0.0%
+43
61.0%
2050
0.46
1251
1 0 1 0 1 0 1 0 = = 0 = 0 0 0 1 1 1 0 1 0 = 0 = = 0 1 0 0 = 1 =
–   Zappa 1.1 64-bit2717+19
−19
(+84)16 − 16
(+14−14=4)
50.0%
16.0 / 32
0.0%
+82
55.7%
2418
0.73
1348
1 1 = 0 1 0 1 0 1 0 = = 1 0 0 1 1 1 0 1 1 1 0 0 0 1 0 0 0 1 = 0
–   Slow Chess Blitz WV2.12716+19
−19
(+83)11.5 − 20.5
(+5−14=13)
35.9%
11.5 / 32
0.0%
−4
55.1%
1613
0.46
889
0 1 0 = = = = 0 = 0 1 1 0 1 = 0 = = = 0 0 0 = = 0 0 0 = = 1 0 0
–   Alaric 7042713+26
−26
(+80)13 − 16
(+7−10=12)
44.8%
13.0 / 29
0.0%
+43
56.7%
1654
0.72
938
0 = 0 1 0 = 0 = 0 = 1 1 1 = = 0 = = 0 0 0 1 0 = = = 1 1 =
–   Frenzee 3.0 64-bit2711+19
−19
(+78)8.5 − 17.5
(+6−15=5)
32.7%
8.5 / 26
0.0%
−52
56.7%
2037
0.55
1154
= 0 0 0 = 1 0 0 0 0 1 0 = 1 0 0 = 1 0 1 0 1 0 = 0 0
–   Colossus 2007d2707+20
−20
(+74)14 − 15
(+11−12=6)
48.3%
14.0 / 29
0.0%
+60
55.7%
1995
0.55
1112
1 = 0 = 1 0 = 1 0 = 0 0 = 0 = 1 1 0 0 0 1 0 1 1 1 0 1 1 0
–   Pharaon 3.5.12704+19
−19
(+71)10 − 22
(+5−17=10)
31.3%
10.0 / 32
0.0%
−56
56.5%
1989
0.64
1124
= 0 0 = 0 = 0 = 0 0 1 = 0 1 0 1 = 0 0 1 = = 0 0 0 = 0 1 0 0 = 0
–   List 5.122699+18
−18
(+66)13 − 19
(+8−14=10)
40.6%
13.0 / 32
0.0%
+3
61.0%
1984
0.44
1211
= 0 = 0 1 = 1 1 0 0 1 = 0 = = 0 = 0 0 = 1 0 0 = = 0 0 0 1 1 0 1
–   SOS 5.12697+18
−18
(+64)15.5 − 16.5
(+11−12=9)
48.4%
15.5 / 32
0.0%
+51
54.4%
1631
0.71
888
0 1 = 1 1 = 1 0 = 1 0 0 = 1 0 0 1 = 0 = 1 0 = 1 1 0 = 0 = 0 1 0
–   Colossus 2007c2694+19
−19
(+61)8.5 − 15.5
(+4−11=9)
35.4%
8.5 / 24
0.0%
−32
59.8%
1382
0.55
826
= 0 = = = = = 0 = 0 0 0 1 0 1 0 0 0 0 0 = 1 1 =
–   Ruffian 1.0.52687+17
−17
(+54)18 − 14
(+13−9=10)
56.3%
18.0 / 32
0.0%
+97
54.4%
2386
0.67
1298
0 0 = 0 = 0 1 0 0 = 0 1 1 1 0 1 1 1 = 1 = 0 1 = 1 1 = 1 = = 1 =
–   Petir 4.392682+18
−18
(+49)14.5 − 11.5
(+9−6=11)
55.8%
14.5 / 26
0.0%
+82
57.9%
1375
0.66
796
= = 1 = 0 = 0 = 1 = 0 0 1 1 = = 1 0 1 0 1 = = 1 = 1
–   Pseudo 0.7c2680+18
−18
(+47)10.5 − 21.5
(+6−17=9)
32.8%
10.5 / 32
0.0%
−70
51.7%
2385
0.56
1234
1 0 0 = 0 0 0 1 0 = 0 = 0 = 0 0 1 0 0 = = 1 1 1 0 = 0 0 0 = = 0
–   Aristarch 4.502671+18
−18
(+38)19 − 13
(+14−8=10)
59.4%
19.0 / 32
0.0%
+100
56.1%
1734
0.49
972
0 0 1 = = 0 1 1 0 0 = 1 = 1 0 = 1 = = 1 1 1 1 = = 1 1 0 1 0 1 =
–   Petir 4.9999992670+19
−19
(+37)12 − 16
(+7−11=10)
42.9%
12.0 / 28
0.1%
−12
58.5%
1566
0.58
916
0 = 0 = 0 0 0 1 = = 0 = 0 0 = = 1 0 1 1 = 1 = 1 0 1 0 =
–   Hamsters 0.62669+18
−18
(+36)11.5 − 17.5
(+7−13=9)
39.7%
11.5 / 29
0.1%
−36
57.5%
1883
0.66
1083
0 0 = 0 0 = 0 = 0 1 0 = 1 = 0 0 0 0 = 1 1 1 1 1 = = 0 = 0
–   The Baron 2.23 64-bit2669+19
−19
(+36)13.5 − 18.5
(+9−14=9)
42.2%
13.5 / 32
0.1%
−16
53.2%
1730
0.91
921
1 1 = = = 1 0 = 0 0 = 0 0 0 0 = = = = 1 0 1 1 0 0 1 0 1 0 0 0 1
–   Booot 4.13.12668+18
−18
(+35)14 − 13
(+9−8=10)
51.9%
14.0 / 27
0.1%
+42
54.1%
1496
0.54
810
0 = 0 0 = = = 0 1 0 0 = 1 = 0 1 = 1 1 = 1 1 1 = 1 = 0
–   BugChess2 1.5.22661+18
−18
(+28)12 − 16
(+7−11=10)
42.9%
12.0 / 28
0.6%
−19
56.3%
1623
0.59
913
= 1 = 1 = 1 = 0 1 0 = 0 = 0 0 = 1 = 0 0 0 = 0 1 0 = 0 1
–   Jonny 2.832652+17
−17
(+19)14.5 − 17.5
(+8−11=13)
45.3%
14.5 / 32
4.1%
−12
54.9%
1883
0.70
1033
= = 1 0 1 = = 1 0 = 1 = 0 = 0 = 0 = 1 0 1 0 0 = 0 1 = 1 0 0 = =
–   Crafty 21.5 64-bit PS2652+17
−17
(+19)7 − 14
(+3−10=8)
33.3%
7.0 / 21
3.5%
−83
51.4%
973
0.58
500
= = = = 1 = 0 = 0 0 0 = 0 0 0 1 0 = 1 0 0
–   The Baron 1.8.12651+18
−18
(+18)15.5 − 12.5
(+11−8=9)
55.4%
15.5 / 28
4.9%
+54
52.1%
1590
0.78
828
= = 1 1 1 1 1 = 0 0 0 0 0 1 1 0 = 0 = 0 = 1 = 1 1 = 1 =
–   Anaconda 2.0.12644+17
−17
(+11)10.5 − 12.5
(+6−8=9)
45.7%
10.5 / 23
14.6%
−17
58.3%
1228
0.50
716
= 0 0 = = = = = 0 1 0 0 1 0 = 1 1 1 0 = = 1 0
–   Movei 00.8.4032643+22
−22
(+10)15 − 17
(+10−12=10)
46.9%
15.0 / 32
20.0%
−11
53.1%
2006
0.66
1066
= 0 0 = 0 1 1 = 1 = = 1 1 0 0 0 = 1 1 1 0 = 0 1 0 = 0 0 0 1 = =
–   Fritz 5.322643+17
−17
(+10)16 − 10
(+12−6=8)
61.5%
16.0 / 26
16.7%
+89
55.9%
1442
0.89
806
= 0 1 0 = = = = 0 0 0 1 1 = 0 1 1 = 1 1 1 1 1 = 1 1
–   Ktulu 4.22634+17
−17
(+1)10 − 13
(+7−10=6)
43.5%
10.0 / 23
45.6%
−45
58.0%
1722
0.47
998
1 = 0 = 0 1 1 0 0 1 0 = = 0 1 1 0 = 0 = 0 1 0
–   Thinker 4.7a2634+17
−17
(+1)16.5 − 11.5
(+10−5=13)
58.9%
16.5 / 28
44.9%
+53
62.6%
1547
0.69
969
1 = = 1 1 0 1 1 = 1 0 = 0 = = 1 = 1 = = 0 = 0 = 1 = 1 =
–   Ufim 8.022628+18
−18
(−5)11.5 − 16.5
(+7−12=9)
41.1%
11.5 / 28
66.3%
−65
54.2%
1640
0.77
889
1 = = 1 0 1 0 0 1 0 1 0 1 1 = 0 0 = = = 0 0 = = 0 = 0 0
–   Fritz 6 Light2627+19
−19
(−6)16 − 11
(+13−8=6)
59.3%
16.0 / 27
69.5%
+61
58.4%
2066
0.86
1207
= = 0 1 1 1 = 0 1 0 1 = 1 1 1 = 1 0 1 0 0 = 1 1 1 0 0
–   Trace 1.37a2622+17
−17
(−11)13 − 16
(+8−11=10)
44.8%
13.0 / 29
82.2%
−41
55.3%
2052
0.60
1134
0 0 0 1 1 1 1 0 = 0 = 1 1 0 1 1 = 0 = 0 = = 0 0 0 = = = =
–   AnMon 5.602621+18
−18
(−12)12 − 14
(+9−11=6)
46.2%
12.0 / 26
85.3%
−38
53.5%
1633
0.60
874
0 0 0 0 0 0 1 = 1 1 = 1 1 = 1 = 1 0 1 0 0 = = 1 0 0
–   E.T. Chess 18.11.052620+21
−21
(−13)11 − 17
(+6−12=10)
39.3%
11.0 / 28
84.5%
−84
56.5%
1465
0.60
827
0 = 0 1 = 0 1 = 0 = 0 1 1 = 0 0 = = = 0 1 0 0 = 0 1 0 =
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17
(−19)15.5 − 7.5
(+13−5=5)
67.4%
15.5 / 23
95.1%
+109
50.5%
1724
0.59
871
= = 1 1 1 0 1 1 = 1 = 1 1 0 1 1 0 1 1 0 1 0 =
–   Yace 0.99.872609+17
−17
(−24)15.5 − 11.5
(+11−7=9)
57.4%
15.5 / 27
98.4%
+25
59.5%
1454
0.65
865
1 1 0 0 0 = 0 1 1 = 1 1 1 = = = = 0 1 1 1 = = 0 0 1 =
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19
(−26)16 − 12
(+11−7=10)
57.1%
16.0 / 28
98.5%
+19
51.0%
1837
0.66
936
1 1 1 = = 0 = = 0 1 1 = 0 = 1 1 = 1 1 0 1 = 0 = 0 1 = 0
–   Hamsters 0.52595+21
−21
(−38)18 − 10
(+14−6=8)
64.3%
18.0 / 28
99.8%
+63
54.2%
2096
0.82
1135
1 1 1 0 1 = = = = 1 0 0 0 1 1 1 = = 1 1 = 0 = 1 1 1 0 1
–   Pepito 1.59 32-bit2595+19
−19
(−38)10.5 − 15.5
(+6−11=9)
40.4%
10.5 / 26
99.9%
−99
55.7%
1505
0.44
839
1 0 1 0 = 0 = 1 = = 0 = 1 = 0 0 = 0 0 0 1 = 0 = 1 0
–   Bruja 1.9 64-bit JA No-int-book2584+18
−18
(−49)13 − 14
(+10−11=6)
48.1%
13.0 / 27
100.0%
−60
58.6%
1911
0.69
1119
1 0 0 1 = 0 0 0 = 0 1 0 1 0 0 = = = 0 1 = 1 1 0 1 1 1
–   Green Light Chess 3.002582+17
−17
(−51)17 − 8
(+13−4=8)
68.0%
17.0 / 25
100.0%
+71
57.7%
1429
0.78
825
0 1 1 1 = 1 = = 0 1 1 1 = 1 1 = 0 1 1 1 = = 0 = 1
–   Tao 5.62574+17
−17
(−59)15.5 − 10.5
(+12−7=7)
59.6%
15.5 / 26
100.0%
+12
61.7%
1524
0.83
941
= 0 1 = 1 1 = 1 0 0 0 = 1 1 0 = = 0 0 1 1 1 1 1 = 1
–   Cerebro 3.03d2572+19
−19
(−61)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
100.0%
−71
51.6%
2112
0.78
1089
1 1 = = 0 1 0 0 0 1 0 = 1 1 = 0 0 0 1 1 0 = 0 1 = 1 = 0 0 1 1 0
–   Twisted Logic 20080404x2568+18
−18
(−65)13 − 11
(+11−9=4)
54.2%
13.0 / 24
100.0%
−36
51.5%
1342
0.84
691
1 0 1 0 1 = 1 0 1 1 = = 0 1 0 1 0 1 1 1 0 0 0 =
–   Arasan 10.0 64-bit2564+17
−17
(−69)14.5 − 8.5
(+10−4=9)
63.0%
14.5 / 23
100.0%
+11
55.8%
1331
0.61
743
= 1 1 1 1 1 1 1 0 = = 0 0 0 = = 1 = 1 = = = 1
–   Abrok 5.02561+17
−17
(−72)7 − 14
(+3−10=8)
33.3%
7.0 / 21
100.0%
−179
54.5%
1002
0.63
546
= 1 0 1 = 0 = = = 0 1 0 0 = 0 0 0 0 = 0 =
–   Amyan 1.5972552+17
−17
(−81)17 − 10
(+14−7=6)
63.0%
17.0 / 27
100.0%
+13
59.1%
1725
0.73
1019
1 1 0 1 1 = 1 = 0 1 1 0 = 1 1 = 1 = 1 1 0 0 0 1 1 = 0
–   Matacz 1.3 HT74 5-men-egbb2551+18
−18
(−82)14 − 12
(+10−8=8)
53.8%
14.0 / 26
100.0%
−54
55.2%
1362
0.53
752
= 1 0 1 1 = = 1 1 1 1 1 0 0 1 0 = = = 0 0 0 = = 1 0
–   SpiderChess 0706032546+17
−17
(−87)20 − 8
(+18−6=4)
71.4%
20.0 / 28
100.0%
+80
53.6%
2354
0.60
1261
1 1 1 1 1 1 0 = = 0 0 1 0 1 1 0 = 1 1 1 1 = 0 1 1 1 1 1
–   Quark 2.352536+16
−16
(−97)16.5 − 11.5
(+13−8=7)
58.9%
16.5 / 28
100.0%
−33
55.7%
1914
0.84
1066
0 = 0 1 0 1 1 = 0 1 = 1 1 1 = 1 1 1 0 1 1 = 0 0 0 = = 1
–   Gaia 3.5 64-bit2536+17
−17
(−97)22 − 10
(+19−7=6)
68.8%
22.0 / 32
100.0%
+44
50.4%
2566
0.91
1292
1 1 0 1 1 1 0 1 0 0 0 1 = = 0 1 1 0 1 1 1 = = = 1 1 1 1 = 1 1 1
–   King of Kings 2.562536+18
−18
(−97)10.5 − 13.5
(+8−11=5)
43.8%
10.5 / 24
100.0%
−146
51.1%
1730
0.77
884
0 = = 1 0 0 1 = 1 = 0 1 1 0 0 1 1 = 0 0 1 0 0 0
–   LambChop 10.992531+17
−17
(−102)17 − 10
(+13−6=8)
63.0%
17.0 / 27
100.0%
−12
59.1%
1631
0.71
964
1 1 1 1 = 1 = 1 1 1 1 1 0 = 1 = = 0 0 = 0 = 0 0 = 1 1
–   Nejmet 3.072521+16
−16
(−112)16.5 − 7.5
(+13−4=7)
68.8%
16.5 / 24
100.0%
+19
57.4%
1699
0.62
975
1 = 1 1 0 0 1 1 1 = = 1 = 1 = 1 = 0 0 1 1 = 1 1
–   Snitch 1.6.2 32-bit2521+15
−15
(−112)21 − 7
(+19−5=4)
75.0%
21.0 / 28
100.0%
+90
56.2%
2036
0.85
1145
1 1 = 0 1 1 1 1 0 1 1 1 1 1 1 0 1 1 1 = 1 1 1 0 = = 1 0
–   Comet B682478+14
−14
(−155)20.5 − 8.5
(+15−3=11)
70.7%
20.5 / 29
100.0%
−17
53.5%
1460
0.82
781
0 1 = 1 = = 1 0 = 1 = 1 1 1 1 = = = 0 1 = = 1 1 1 1 = 1 1
–   Sjeng 12.132475+14
−14
(−158)17.5 − 10.5
(+12−5=11)
62.5%
17.5 / 28
100.0%
−77
52.2%
1421
0.58
742
1 = 0 0 1 = = = 1 = 1 1 0 = 0 = 1 = 1 = 1 0 = = 1 1 1 1

Performance

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

Perf = C + 0.183 [±0.246] * 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