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
Ax 0.8 WB#130  (2119+15
−15
)Quote
Author: Pham Hong Nguyen (Vietnam) Released: 2002-07-28Link: WBEC
Issues with this engine: Ax 0.8 never shows evaluation, depth or PV. Also its time usage is decreasing over time, until around move 60 it uses only about half of the time for each move. After move 60 the time usage stops decreasing and remains at about half of normal till the end of game. Also, Ax 0.8 sometimes hangs up after long series of moves in an even position.
This is the only Ax version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Thor's Hammer 2.28 32-bit2417+15
−15
(+298)5 − 22
(+3−20=4)
18.5%
5.0 / 27
0.0%
+39
  
1 0 0 0 0 0 0 0 = 0 0 0 0 0 0 = 0 0 0 0 0 1 1 = 0 = 0
–   Chezzz 1.0.32409+15
−15
(+290)1 − 28
(+1−28=0)
3.4%
1.0 / 29
0.0%
−331
  
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
–   Resp 0.19 64-bit JA Nobook2402+16
−16
(+283)5.5 − 21.5
(+4−20=3)
20.4%
5.5 / 27
0.0%
+34
  
0 0 0 0 0 = 0 0 = 0 1 0 = 0 0 0 1 0 0 0 0 0 0 0 0 1 1
–   Averno 0.812396+15
−15
(+277)4.5 − 22.5
(+3−21=3)
16.7%
4.5 / 27
0.0%
−7
  
0 0 0 0 1 1 0 0 0 = = 0 0 0 0 0 0 = 0 0 0 0 0 0 0 1 0
–   Scidlet 3.61 64-bit JA2390+15
−15
(+271)6.5 − 17.5
(+5−16=3)
27.1%
6.5 / 24
0.0%
+87
  
0 0 0 1 0 1 0 = 0 0 1 0 0 0 = 0 0 = 0 0 0 1 0 1
–   KnightX 1.922385+15
−15
(+266)3 − 25
(+2−24=2)
10.7%
3.0 / 28
0.0%
−112
  
0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 = 0 0 =
–   Eeyore 1.482384+15
−15
(+265)3 − 26
(+1−24=4)
10.3%
3.0 / 29
0.0%
−80
  
0 0 = 0 = = 0 0 0 0 0 0 0 0 0 0 0 1 = 0 0 0 0 0 0 0 0 0 0
–   Ayito 0.2.9942371+16
−16
(+252)7.5 − 21.5
(+5−19=5)
25.9%
7.5 / 29
0.0%
+65
  
0 0 0 0 = 0 0 0 0 0 1 = 0 0 0 0 1 0 1 0 0 1 = 0 0 = 0 = 1
–   EXchess 5.01 beta 64-bit JA2355+14
−14
(+236)5.5 − 20.5
(+3−18=5)
21.2%
5.5 / 26
0.0%
+13
  
1 0 0 1 0 = 1 0 0 0 0 0 0 0 = 0 0 0 0 = 0 = 0 = 0 0
–   Esc 1.162345+15
−15
(+226)4.5 − 23.5
(+1−20=7)
16.1%
4.5 / 28
0.0%
−27
  
= 0 0 = 0 0 0 0 0 0 = 0 0 0 = 0 0 0 0 0 0 = = 0 = 0 1 0
–   GNU Chess 5.07 64-bit JA2332+22
−22
(+213)7.5 − 21.5
(+5−19=5)
25.9%
7.5 / 29
0.0%
+26
  
0 0 = 0 0 0 = 0 = 1 = 0 0 0 0 1 0 0 1 0 0 1 0 0 = 0 0 1 0
–   Anechka 0.082320+16
−16
(+201)5 − 27
(+3−25=4)
15.6%
5.0 / 32
0.0%
−91
  
0 0 0 0 0 0 0 0 0 = 0 1 0 0 = 0 0 1 0 0 0 0 0 0 0 = 0 0 0 = 0 1
–   Dorky 3.482308+16
−16
(+189)0.5 − 24.5
(+0−24=1)
2.0%
0.5 / 25
0.0%
−415
  
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 = 0 0 0
–   CyberPagno 2.1 32MB2295+16
−16
(+176)7.5 − 22.5
(+6−21=3)
25.0%
7.5 / 30
0.0%
−31
  
0 0 0 1 0 0 0 1 0 0 0 0 1 0 = 0 = 0 0 1 = 0 0 0 0 0 0 1 1 0
–   Latista (Sinobyl) 1.52289+16
−16
(+170)7 − 15
(+6−14=2)
31.8%
7.0 / 22
0.0%
+24
  
0 0 1 0 1 0 0 = = 0 0 1 0 0 1 1 1 0 0 0 0 0
–   Madeleine 0.22285+15
−15
(+166)9 − 18
(+6−15=6)
33.3%
9.0 / 27
0.0%
+42
  
0 = 1 0 0 = 0 1 0 0 1 1 = 0 = 0 0 0 0 = 0 = 0 0 0 1 1
–   Chispa 4.0.32273+14
−14
(+154)8 − 15
(+4−11=8)
34.8%
8.0 / 23
0.0%
+51
  
= 1 0 0 1 = = = 0 = = 1 0 0 0 0 0 0 = = 1 0 0
–   Atlas 2.202271+17
−17
(+152)9 − 14
(+9−14=0)
39.1%
9.0 / 23
0.0%
+54
  
0 0 1 0 1 1 0 0 0 0 0 1 0 1 0 0 0 1 1 0 1 0 1
–   Genesis 2.02247+16
−16
(+128)6 − 20
(+4−18=4)
23.1%
6.0 / 26
0.0%
−85
  
0 0 0 0 = 1 0 0 1 0 0 0 0 1 1 0 0 0 0 0 = 0 0 0 = =
–   InmiChess 3.06N2241+15
−15
(+122)7 − 17
(+4−14=6)
29.2%
7.0 / 24
0.0%
−31
  
= 0 0 0 0 = 0 1 = 1 1 0 0 0 0 0 = 0 0 1 = 0 0 =
–   Lime 662241+18
−18
(+122)10 − 22
(+7−19=6)
31.3%
10.0 / 32
0.0%
−17
  
= 0 0 0 0 0 1 0 0 = 0 1 = = 1 = 0 = 1 1 1 0 0 0 0 0 0 0 1 0 0 0
–   Nesik 0.7.0 alpha2237+16
−16
(+118)10.5 − 18.5
(+7−15=7)
36.2%
10.5 / 29
0.0%
+19
  
0 1 0 0 0 = 0 0 0 = = = = 0 0 0 0 = 1 1 0 1 = 0 0 1 1 0 1
–   Sunsetter C10.3 64-bit JA2232+16
−16
(+113)9 − 12
(+5−8=8)
42.9%
9.0 / 21
0.0%
+66
  
0 1 = = = 0 1 = = 0 1 0 = 1 0 = = 0 0 1 0
–   NagaSkaki 5.122232+18
−18
(+113)11.5 − 20.5
(+6−15=11)
35.9%
11.5 / 32
0.0%
+17
  
= 1 0 1 = 1 = 0 = 1 0 0 0 0 1 = = 0 0 1 0 0 0 0 = = = 0 0 = = 0
–   Alarm 0.93.12226+16
−16
(+107)16 − 16
(+14−14=4)
50.0%
16.0 / 32
0.0%
+105
  
1 1 1 0 0 0 0 1 0 1 0 0 1 = = 1 1 1 1 0 1 = 0 0 0 0 0 1 0 1 1 =
–   Fortress 1.622216+15
−15
(+97)6 − 19
(+4−17=4)
24.0%
6.0 / 25
0.0%
−107
  
0 0 = 0 = 1 1 0 0 = 0 0 0 1 0 0 0 = 0 0 0 1 0 0 0
–   WJChess 1.642215+16
−16
(+96)6 − 20
(+5−19=2)
23.1%
6.0 / 26
0.0%
−138
  
0 1 0 0 0 0 0 0 0 0 0 1 0 = = 0 1 0 0 0 1 1 0 0 0 0
–   Gk 0.90 64-bit JA2194+16
−16
(+75)14.5 − 12.5
(+12−10=5)
53.7%
14.5 / 27
0.0%
+101
  
= 1 1 1 0 0 1 0 1 1 1 0 1 1 0 0 0 1 = 0 = = 0 = 1 1 0
–   Alf 1.09 JA2193+17
−17
(+74)14.5 − 17.5
(+10−13=9)
45.3%
14.5 / 32
0.0%
+40
  
1 = 0 = 0 1 1 0 1 0 0 = = 1 = 1 1 0 0 0 1 = 1 0 0 = = = 0 1 0 0
–   Clarabit 1.00 64-bit2193+18
−18
(+74)10.5 − 21.5
(+8−19=5)
32.8%
10.5 / 32
0.0%
−57
  
= 0 0 0 0 0 0 1 1 0 0 0 0 = 0 1 = 0 = 1 1 0 0 = 0 0 0 1 1 1 0 0
–   Ghost 0.142189+17
−17
(+70)14 − 18
(+11−15=6)
43.8%
14.0 / 32
0.0%
+24
  
0 = 0 1 0 0 = 0 = = 1 1 1 0 0 1 1 0 0 0 0 1 1 0 = 1 1 1 0 0 = 0
–   Wing 2.0a2179+16
−16
(+60)12 − 12
(+8−8=8)
50.0%
12.0 / 24
0.0%
+58
  
= 0 = 1 1 = 1 0 1 = 1 = 0 0 1 0 = = 1 1 0 0 0 =
–   Uragano 3D 0.872174+16
−16
(+55)10.5 − 21.5
(+8−19=5)
32.8%
10.5 / 32
0.0%
−79
  
0 0 1 0 0 = 0 0 1 0 0 = 0 0 0 1 0 = 1 0 0 = 0 0 1 0 1 1 = 0 1 0
–   Parrot 0707222161+17
−17
(+42)14.5 − 17.5
(+12−15=5)
45.3%
14.5 / 32
0.0%
+4
  
0 0 1 1 0 1 0 1 0 0 = 0 0 = 0 0 1 0 1 = 0 0 1 = 0 = 0 1 1 1 1 1
–   Matheus 2.32144+15
−15
(+25)7.5 − 15.5
(+6−14=3)
32.6%
7.5 / 23
0.8%
−109
  
= 1 0 0 0 0 1 0 0 0 0 1 0 = 0 0 0 = 0 1 0 1 1
–   Bodo 0.2b2137+15
−15
(+18)6.5 − 16.5
(+5−15=3)
28.3%
6.5 / 23
4.5%
−153
  
0 1 0 0 0 0 1 = 0 0 0 0 0 0 0 1 0 0 0 = = 1 1
–   Monarch 1.72131+16
−16
(+12)16.5 − 15.5
(+14−13=5)
51.6%
16.5 / 32
12.5%
+23
  
1 0 1 0 0 1 1 = 1 1 0 = 0 1 1 1 = 0 = 1 1 1 1 0 0 0 1 = 0 0 0 0
–   Bestia 0.902122+15
−15
(+3)10 − 14
(+7−11=6)
41.7%
10.0 / 24
39.5%
−51
  
0 0 0 0 0 = 1 0 0 0 1 1 = = = 1 0 = 1 0 0 1 1 =
–   Gerbil 02 64-bit JA2118+18
−18
(−1)13.5 − 18.5
(+12−17=3)
42.2%
13.5 / 32
52.9%
−63
  
1 0 1 1 1 0 0 0 1 0 0 0 1 0 1 0 = 0 = 0 1 0 1 0 0 1 1 0 0 0 1 =
–   BigLion 2.23x2117+17
−17
(−2)18 − 14
(+16−12=4)
56.3%
18.0 / 32
58.2%
+46
  
1 0 1 1 0 1 0 1 0 1 = 1 0 0 1 1 = 0 0 = 1 1 1 0 1 = 0 1 0 1 0 1
–   RDChess 3.232117+16
−16
(−2)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
56.1%
+75
  
1 1 1 1 0 = = 1 1 1 0 1 1 = 0 0 = = 1 1 1 = 0 1 0 = 0 0 1 1 0 1
–   DelphiMax 2.92102+16
−16
(−17)13 − 13
(+12−12=2)
50.0%
13.0 / 26
94.7%
−13
  
0 = = 1 1 0 1 0 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 0 1 1
–   Armageddon 2.3082098+17
−17
(−21)20.5 − 11.5
(+18−9=5)
64.1%
20.5 / 32
97.4%
+85
  
1 1 1 1 0 1 1 1 = 1 0 1 0 = 0 = 1 = 1 1 = 1 1 1 0 1 1 1 0 0 0 0
–   Requiem 0.532084+15
−15
(−35)18.5 − 13.5
(+12−7=13)
57.8%
18.5 / 32
100.0%
+13
  
1 1 0 = 0 = = 1 1 0 = 1 = = 1 0 1 1 0 = 0 1 = = 1 1 = = 0 1 = =
–   Small Potato 0.6.12082+16
−16
(−37)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
100.0%
−25
  
0 0 = 1 = 0 0 = 0 1 1 1 1 1 1 1 1 0 = 0 0 0 1 1 1 = 0 1 0 0 = =
–   Elephant 1.062075+16
−16
(−44)14.5 − 13.5
(+12−11=5)
51.8%
14.5 / 28
100.0%
−30
  
0 = 0 = = 1 0 1 0 1 1 0 = 1 0 1 1 0 1 = 0 0 1 0 1 0 1 1
–   La Dame Blanche 2.0c2070+19
−19
(−49)23 − 9
(+19−5=8)
71.9%
23.0 / 32
100.0%
+107
  
0 1 1 0 1 = 0 1 1 1 1 1 = 1 = 1 1 1 1 = 0 1 = 1 1 1 1 = = 1 0 =
–   Cilian 4.142069+16
−16
(−50)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
100.0%
+28
  
0 0 = = = 1 = 1 1 1 1 = 1 0 0 = 1 1 1 1 0 = 1 1 1 1 0 1 0 0 1 0
–   Etude 0.1.22063+19
−19
(−56)18 − 14
(+15−11=6)
56.3%
18.0 / 32
100.0%
−10
  
0 1 1 0 0 1 1 1 0 0 0 = 0 1 0 0 1 = 1 1 1 = 0 = = 1 = 1 0 1 1 1
–   Gullydeckel 2.16pl12062+19
−19
(−57)17 − 15
(+13−11=8)
53.1%
17.0 / 32
100.0%
−33
  
0 0 0 1 = 1 0 = 0 = = 0 = 1 1 0 1 1 0 = 1 0 1 0 1 = 1 = 1 1 0 1
–   JanWillem 1.132062+16
−16
(−57)17 − 8
(+14−5=6)
68.0%
17.0 / 25
100.0%
+74
  
1 = 1 0 0 = 1 1 0 1 0 0 = 1 1 1 1 1 1 = = = 1 1 1
–   Marvin 1.3.02054+16
−16
(−65)21 − 9
(+19−7=4)
70.0%
21.0 / 30
100.0%
+91
  
0 1 0 1 1 0 1 = 1 1 1 0 1 1 1 1 1 1 1 = 0 = 1 = 1 0 0 1 1 1
–   Matant 5.042053+17
−17
(−66)15.5 − 16.5
(+12−13=7)
48.4%
15.5 / 32
100.0%
−78
  
= = 0 = 0 0 0 0 1 1 1 0 1 = 1 1 1 = = 0 0 1 1 0 0 = 0 1 0 1 0 1
–   SSEChessII 2.05 DC2049+17
−17
(−70)17 − 15
(+12−10=10)
53.1%
17.0 / 32
100.0%
−48
  
0 1 0 1 1 1 = 0 = = 1 = 1 0 0 = = 1 1 1 0 0 = 1 = 0 0 1 = 0 1 =
–   Faile 1.4.42042+15
−15
(−77)17.5 − 9.5
(+14−6=7)
64.8%
17.5 / 27
100.0%
+30
  
= = = 0 0 1 0 = 1 1 0 1 0 1 1 1 1 1 1 = 1 = 1 1 0 1 =
–   Smash 1.0.32036+17
−17
(−83)18 − 14
(+15−11=6)
56.3%
18.0 / 32
100.0%
−34
  
= 0 0 0 0 1 0 1 1 1 = 1 1 1 = = 0 1 1 0 = 1 1 0 = 1 0 1 0 0 1 1
–   Micro-Max 4.8 PIV DM2028+17
−17
(−91)22 − 10
(+19−7=6)
68.8%
22.0 / 32
100.0%
+51
  
0 0 1 1 0 1 1 1 0 1 1 0 = 1 1 1 0 1 1 1 = 1 0 1 = 1 = = 1 1 = 1
–   Sharper 0.172022+16
−16
(−97)17.5 − 8.5
(+17−8=1)
67.3%
17.5 / 26
100.0%
+52
  
1 1 1 0 1 1 0 1 0 1 1 0 1 0 1 1 1 1 0 1 0 1 = 1 0 1
–   Mustang 4.972021+17
−17
(−98)19 − 13
(+13−7=12)
59.4%
19.0 / 32
100.0%
−36
  
0 0 = 0 1 = 1 1 0 1 1 1 1 0 = = = 0 1 = = 1 = 1 = 1 = 1 0 = 1 =
–   Rival UCI 1.182021+17
−17
(−98)22 − 10
(+19−7=6)
68.8%
22.0 / 32
100.0%
+43
  
= 1 1 1 1 1 0 0 1 0 0 1 = 1 1 = 0 = 1 = 1 1 0 1 1 1 = 0 1 1 1 1
–   BibiChess 0.52007+16
−16
(−112)19 − 13
(+17−11=4)
59.4%
19.0 / 32
100.0%
−39
  
0 1 1 1 1 1 0 0 1 = 1 0 0 1 1 1 1 = 0 1 0 0 0 0 1 1 1 = 1 1 0 =
–   IACH 0.56z1995+18
−18
(−124)25.5 − 6.5
(+25−6=1)
79.7%
25.5 / 32
100.0%
+147
  
1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 1 1 =
–   Clueless 1.41990+18
−18
(−129)20 − 12
(+18−10=4)
62.5%
20.0 / 32
100.0%
−30
  
1 1 0 1 0 1 0 1 1 1 1 0 = 0 0 1 = 1 0 0 1 1 0 1 1 = 1 = 1 0 1 1
–   Warrior 1.0.31987+17
−17
(−132)20.5 − 11.5
(+19−10=3)
64.1%
20.5 / 32
100.0%
−16
  
1 1 0 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 1 = 1 0 0 = 1 = 1 1 0 1 0
–   Morphy 3.221974+17
−17
(−145)21 − 11
(+17−7=8)
65.6%
21.0 / 32
100.0%
−35
  
1 1 1 0 1 = 1 1 0 1 1 1 = = 1 = 1 1 1 = 1 1 0 = = 1 0 = 1 0 0 0
–   Soldat 0.25b1873+17
−17
(−246)20 − 7
(+17−4=6)
74.1%
20.0 / 27
100.0%
−68
  
= 1 = = 0 1 1 = 1 1 1 = 1 0 1 1 1 0 1 = 1 1 1 1 1 1 0
–   Elf 1.3.01820+18
−18
(−299)27.5 − 1.5
(+27−1=1)
94.8%
27.5 / 29
100.0%
+207
  
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 1 1
–   Laurifer 1.01815+18
−18
(−304)30.5 − 1.5
(+30−1=1)
95.3%
30.5 / 32
100.0%
+220
  
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 1 1 1

Performance

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

Perf = C − 0.209 [±0.155] * 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