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
Crafty 21.5 64-bit PS WB#29–30  (2652+17
−17
)Quote
Author: Robert Hyatt (USA) Released: 2007-03-08Links: Hyatt's FTP, Dann Corbit, WBEC
"PS" compile is created by Peter Skinner.
This engine is stable and runs without issues.
This is the only Crafty version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Spike 1.2 Turin2842+23
−23
(+190)5.5 − 24.5
(+2−21=7)
18.3%
5.5 / 30
0.0%
−47
56.8%
2200
0.80
1249
0 0 0 0 1 0 0 0 0 = 0 0 0 0 0 = 0 0 = 0 0 = 0 = 0 = 0 1 = 0
–   Naum 2.0 64-bit2793+21
−21
(+141)9 − 20
(+4−15=10)
31.0%
9.0 / 29
0.0%
+13
57.1%
1716
0.68
979
0 = = 0 1 0 0 0 = = = = 0 = 0 = 0 0 = 0 0 1 1 0 0 = 1 0 0
–   Naum 2.0 32-bit2777+26
−26
(+125)7.5 − 20.5
(+6−19=3)
26.8%
7.5 / 28
0.0%
−64
57.4%
2236
0.71
1283
0 0 = 0 0 0 1 0 0 = 0 0 1 0 1 0 0 0 0 1 0 0 = 1 0 1 0 0
–   Glaurung 1.2.1 64-bit2770+24
−24
(+118)6 − 21
(+2−17=8)
22.2%
6.0 / 27
0.0%
−76
55.3%
1808
0.72
1000
0 1 0 0 0 0 0 = = = 0 0 0 0 = = = 0 1 0 0 0 0 = 0 0 =
–   Scorpio 1.912739+26
−26
(+87)13 − 11
(+10−8=6)
54.2%
13.0 / 24
0.0%
+114
56.6%
1635
0.76
925
1 1 = = 0 0 1 0 = 1 0 1 0 1 1 0 0 = 1 1 = = 1 0
–   Pro Deo 1.62719+22
−22
(+67)8 − 15
(+5−12=6)
34.8%
8.0 / 23
0.0%
−35
54.9%
1713
0.85
940
0 0 0 = 0 = 0 = 1 0 = 1 1 0 0 = 0 0 = 1 1 0 0
–   Delfi 5.22718+21
−21
(+66)11.5 − 11.5
(+8−8=7)
50.0%
11.5 / 23
0.0%
+64
58.7%
1676
0.63
983
0 1 1 = = 1 1 0 1 1 = 0 1 = 0 0 = = 0 0 = 0 1
–   WildCat 72718+19
−19
(+66)9.5 − 16.5
(+4−11=11)
36.5%
9.5 / 26
0.0%
−16
57.4%
1550
0.87
890
0 = 0 0 1 0 0 = = 0 1 = 0 0 1 = 0 0 = = = = = = 0 1
–   Zappa 1.1 64-bit2717+19
−19
(+65)8.5 − 19.5
(+4−15=9)
30.4%
8.5 / 28
0.0%
−67
58.5%
2227
0.83
1302
0 0 0 0 = 0 = = 0 0 = 1 0 0 = 0 = 1 = 0 = 0 1 0 1 0 0 =
–   Slow Chess Blitz WV2.12716+19
−19
(+64)13 − 13
(+8−8=10)
50.0%
13.0 / 26
0.0%
+61
57.4%
1738
0.57
997
= = = 0 = 1 0 0 0 1 0 0 = 1 = = = 1 1 0 1 0 = 1 1 =
–   Alaric 7042713+26
−26
(+61)8.5 − 20.5
(+6−18=5)
29.3%
8.5 / 29
0.0%
−95
54.5%
2339
0.67
1275
0 0 = 0 0 0 = 0 1 1 0 1 0 0 1 0 0 0 0 0 = = 0 1 = 0 0 1 0
–   Frenzee 3.0 64-bit2711+19
−19
(+59)11.5 − 16.5
(+8−13=7)
41.1%
11.5 / 28
0.0%
−5
52.2%
2345
0.92
1224
1 0 1 = 1 0 0 0 1 = 0 = 0 0 0 0 0 1 = 0 1 = 0 1 = 0 = 1
–   Colossus 2007d2707+20
−20
(+55)8 − 14
(+5−11=6)
36.4%
8.0 / 22
0.0%
−42
60.3%
1473
0.63
888
0 0 = = = = = 0 1 0 0 0 1 0 = 1 0 0 0 1 1 0
–   Pharaon 3.5.12704+19
−19
(+52)13.5 − 12.5
(+10−9=7)
51.9%
13.5 / 26
0.0%
+60
55.9%
1845
0.77
1032
1 0 0 0 1 = = 0 1 0 = 0 1 1 1 1 0 = = 0 1 0 = 1 = 1
–   List 5.122699+18
−18
(+47)8.5 − 13.5
(+5−10=7)
38.6%
8.5 / 22
0.0%
−25
57.9%
1732
0.72
1003
0 0 0 0 1 = 0 = = 1 0 = 1 = 0 = 1 0 1 0 = 0
–   SOS 5.12697+18
−18
(+45)10 − 14
(+6−10=8)
41.7%
10.0 / 24
0.0%
−15
56.3%
1691
0.87
952
0 1 1 = 1 0 0 1 1 = 1 0 0 0 = 0 0 = = = = = 0 0
–   Colossus 2007c2694+19
−19
(+42)13.5 − 12.5
(+8−7=11)
51.9%
13.5 / 26
0.0%
+57
56.4%
1685
0.70
951
1 0 = 1 0 = 0 = = 1 0 1 = 0 1 = 1 0 0 = 1 = = = 1 =
–   Ruffian 1.0.52687+17
−17
(+35)15.5 − 13.5
(+8−6=15)
53.4%
15.5 / 29
0.1%
+53
60.3%
1268
0.57
764
= 1 0 = 0 1 = 1 = = 1 0 = 1 = 0 0 1 = 1 = = = = 1 = = 0 =
–   Petir 4.392682+18
−18
(+30)10.5 − 14.5
(+5−9=11)
42.0%
10.5 / 25
0.5%
−17
57.9%
1317
0.73
763
= 0 0 = = = 1 0 1 = 0 0 0 1 = 0 = 1 = 0 0 = = = 1
–   Pseudo 0.7c2680+18
−18
(+28)11 − 15
(+5−9=12)
42.3%
11.0 / 26
0.7%
−21
59.3%
1443
0.66
855
= 0 0 0 = = = 0 = = 1 0 0 1 = = 0 = = 0 1 0 1 = = 1
–   Aristarch 4.502671+18
−18
(+19)15.5 − 10.5
(+10−5=11)
59.6%
15.5 / 26
4.7%
+79
56.8%
1227
0.70
697
1 = = 1 = = = 0 = 0 1 = = 1 0 1 1 = = 1 0 1 0 = 1 1
–   Petir 4.9999992670+19
−19
(+18)11.5 − 16.5
(+7−12=9)
41.1%
11.5 / 28
6.9%
−40
62.6%
1526
0.62
956
= 1 0 1 = = 1 0 = 1 0 0 = 0 1 0 = = 0 0 0 = 0 0 0 1 = 1
–   Hamsters 0.62669+18
−18
(+17)12.5 − 14.5
(+9−11=7)
46.3%
12.5 / 27
7.1%
−8
55.9%
2225
0.66
1243
1 = = 1 1 0 0 = 1 0 0 0 0 0 1 0 = = = = 0 1 0 1 1 1 0
–   The Baron 2.23 64-bit2669+19
−19
(+17)15.5 − 16.5
(+11−12=9)
48.4%
15.5 / 32
7.1%
+6
57.2%
2266
0.84
1297
0 0 1 0 1 1 0 0 1 0 = 0 0 0 = 0 1 = 1 = 1 = = 0 1 = = 0 1 = 1 1
–   Booot 4.13.12668+18
−18
(+16)16 − 11
(+10−5=12)
59.3%
16.0 / 27
8.6%
+75
55.0%
1724
0.75
949
= = 0 = 1 0 1 = 0 = 1 = 1 1 0 = = 1 = 1 = 1 = = 1 0 1
–   BugChess2 1.5.22661+18
−18
(+9)12 − 11
(+9−8=6)
52.2%
12.0 / 23
22.6%
+23
57.3%
1806
0.83
1034
0 0 = 1 0 1 0 = 0 1 1 0 = = 1 0 1 = 1 0 = 1 1
–   Jonny 2.832652+17
−17
(0)12 − 11
(+8−7=8)
52.2%
12.0 / 23
52.9%
+14
50.9%
1634
0.71
831
1 0 1 = 0 0 1 1 1 = 0 = 0 = 1 0 = = = 1 0 = 1
–   The Baron 1.8.12651+18
−18
(−1)15.5 − 12.5
(+14−11=3)
55.4%
15.5 / 28
54.7%
+41
54.1%
2587
0.96
1400
0 0 = 1 0 1 1 1 0 0 0 1 1 1 0 1 0 = 0 = 0 1 1 1 1 1 1 0
–   Anaconda 2.0.12644+17
−17
(−8)17 − 8
(+15−6=4)
68.0%
17.0 / 25
76.6%
+133
59.1%
1991
0.68
1177
0 1 = 0 = 1 1 1 1 1 1 1 1 0 = 1 1 0 1 1 0 1 1 0 =
–   Movei 00.8.4032643+22
−22
(−9)11.5 − 14.5
(+8−11=7)
44.2%
11.5 / 26
75.2%
−51
57.3%
1948
0.57
1116
0 0 = 1 1 1 = 1 0 0 0 1 = = = 0 0 0 = = 1 0 1 0 0 1
–   Fritz 5.322643+17
−17
(−9)12 − 16
(+6−10=12)
42.9%
12.0 / 28
79.6%
−52
60.9%
1356
0.63
826
0 = 0 = 1 = 0 0 0 0 = 1 = = = 1 0 1 0 1 = = 0 0 = = = 1
–   Ktulu 4.22634+17
−17
(−18)10 − 16
(+7−13=6)
38.5%
10.0 / 26
94.9%
−105
57.3%
2040
0.71
1169
0 = = 1 = 0 0 1 0 0 = 1 1 0 1 1 0 = = 0 1 0 0 0 0 0
–   Thinker 4.7a2634+17
−17
(−18)15.5 − 11.5
(+8−4=15)
57.4%
15.5 / 27
95.1%
+25
58.7%
1275
0.67
749
= = = = 1 0 1 1 0 = = = 0 1 = = = 1 1 1 = = = = 0 = 1
–   SmarThink 0.17a2633+16
−16
(−19)14 − 7
(+10−3=8)
66.7%
14.0 / 21
96.5%
+83
51.4%
973
0.58
500
= = = = 0 = 1 = 1 1 1 = 1 1 1 0 1 = 0 1 1
–   Ufim 8.022628+18
−18
(−24)19 − 10
(+16−7=6)
65.5%
19.0 / 29
98.4%
+91
56.0%
2340
0.71
1311
1 = 1 1 = 1 1 1 0 = 1 1 1 1 1 1 1 0 0 1 = 0 = 1 0 = 0 1 0
–   Fritz 6 Light2627+19
−19
(−25)15 − 10
(+11−6=8)
60.0%
15.0 / 25
98.4%
+43
57.3%
1805
0.82
1035
= 1 0 0 0 1 = = 0 = = 1 = = 1 1 1 1 0 0 1 1 = 1 1
–   Trace 1.37a2622+17
−17
(−30)18 − 9
(+14−5=8)
66.7%
18.0 / 27
99.6%
+83
56.7%
1705
0.77
967
1 1 1 0 1 = 1 0 1 1 = = 1 1 0 = = 1 = 1 1 1 1 = 0 = 0
–   AnMon 5.602621+18
−18
(−31)11 − 15
(+8−12=6)
42.3%
11.0 / 26
99.7%
−83
56.5%
1937
0.68
1094
1 0 1 0 = 1 0 0 0 0 = 1 0 = 0 = 0 1 = = 0 1 0 1 0 1
–   E.T. Chess 18.11.052620+21
−21
(−32)15 − 10
(+11−6=8)
60.0%
15.0 / 25
99.4%
+36
57.9%
1642
0.69
951
1 0 = 0 = = 0 1 = = 1 1 1 1 1 = 0 1 = 0 1 1 0 1 =
–   Little Goliath 3.12 Evolution (TB Off)2614+17
−17
(−38)13.5 − 10.5
(+9−6=9)
56.3%
13.5 / 24
100.0%
+5
50.9%
1487
0.78
757
1 = = 1 1 1 1 0 1 = 1 = = 0 = 0 0 = 1 1 = 0 = 0
–   Yace 0.99.872609+17
−17
(−43)15.5 − 9.5
(+11−5=9)
62.0%
15.5 / 25
100.0%
+35
57.2%
1583
0.70
906
1 = 1 = = = = 1 1 1 0 = 0 1 = 1 = 1 0 0 1 = 1 1 0
–   Little Goliath 3.12 Evolution (TB On)2607+19
−19
(−45)12.5 − 15.5
(+8−11=9)
44.6%
12.5 / 28
100.0%
−84
53.1%
1664
0.83
884
0 = 0 = = 1 = 1 0 1 1 0 0 = 1 1 = 0 0 1 1 0 0 0 = = = 0
–   Hamsters 0.52595+21
−21
(−57)14 − 11
(+11−8=6)
56.0%
14.0 / 25
100.0%
−12
56.4%
1888
0.76
1064
0 1 = 1 0 1 0 = 1 = 1 1 1 0 1 0 = 1 1 0 0 0 = 1 =
–   Pepito 1.59 32-bit2595+19
−19
(−57)12.5 − 14.5
(+6−8=13)
46.3%
12.5 / 27
100.0%
−77
58.9%
1463
0.60
861
0 = = 0 = 0 = = 0 = = = = = 0 = 0 = 1 0 1 1 1 0 1 = 1
–   Bruja 1.9 64-bit JA No-int-book2584+18
−18
(−68)21 − 6
(+18−3=6)
77.8%
21.0 / 27
100.0%
+137
56.6%
2071
0.72
1173
= 1 = 1 1 = 1 1 1 1 = = 1 1 = 0 1 1 1 0 1 1 1 1 0 1 1
–   Green Light Chess 3.002582+17
−17
(−70)14.5 − 9.5
(+9−4=11)
60.4%
14.5 / 24
100.0%
−3
56.1%
1236
0.63
694
= = = = = 1 = 1 = 1 = 1 = 1 0 0 = 1 0 1 = 1 0 1
–   Tao 5.62574+17
−17
(−78)16.5 − 9.5
(+14−7=5)
63.5%
16.5 / 26
100.0%
+22
58.8%
1836
0.63
1079
1 1 1 0 1 1 1 0 0 1 0 0 1 0 1 1 = = 1 1 1 = = 1 0 =
–   Cerebro 3.03d2572+19
−19
(−80)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
100.0%
+27
50.3%
2256
0.86
1135
0 1 = 1 0 1 0 1 1 1 1 = 0 0 1 1 0 1 1 1 = 1 1 0 1 1 = 0 0 = 1 1
–   Twisted Logic 20080404x2568+18
−18
(−84)15.5 − 10.5
(+13−8=5)
59.6%
15.5 / 26
100.0%
−15
56.1%
2011
0.89
1128
1 0 = 0 1 0 0 1 0 0 = = 1 1 1 1 1 1 0 1 = 1 = 1 1 0
–   Arasan 10.0 64-bit2564+17
−17
(−88)14.5 − 14.5
(+7−7=15)
50.0%
14.5 / 29
100.0%
−90
56.2%
1396
0.78
784
1 1 = = 1 1 0 1 0 = = 0 1 = = = = = 0 = 0 0 = 1 = = = = 0
–   Abrok 5.02561+17
−17
(−91)14.5 − 12.5
(+10−8=9)
53.7%
14.5 / 27
100.0%
−67
55.7%
1863
0.77
1037
= 0 0 = 1 1 1 0 1 0 0 1 = 0 1 0 = 1 1 = 1 0 = = 1 = =
–   Amyan 1.5972552+17
−17
(−100)11.5 − 11.5
(+9−9=5)
50.0%
11.5 / 23
100.0%
−96
54.6%
1696
0.75
926
= 1 0 1 0 0 = 1 0 1 1 0 1 0 = 0 = 0 = 1 0 1 1
–   SpiderChess 0706032546+17
−17
(−106)16.5 − 10.5
(+14−8=5)
61.1%
16.5 / 27
100.0%
−23
53.9%
2379
0.60
1283
0 1 1 0 1 1 = 1 = 0 = 1 1 1 0 1 0 0 = 0 1 1 1 = 1 1 0

Performance

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

Perf = C + 0.004 [±0.262] * 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