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
Gerbil 02 64-bit JA WB#131  (2118+18
−18
)Quote
Author: Bruce Moreland (USA) Released: 2008-02-26Links: RWBC, Jim Ablett's compile
"JA" compile is made by Jim Ablett.
This engine is stable and runs without issues.
This is the only Gerbil version we tested.
OpponentEloDiffResultsScoreLOSPerfPond
hit
Eval
diff
–   Lime 662241+18
−18
(+123)11.5 − 20.5
(+9−18=5)
35.9%
11.5 / 32
0.0%
+12
50.0%
2832
0.83
1416
0 1 0 0 0 1 0 = 0 0 1 0 0 1 0 0 0 0 0 = 1 = 0 0 1 0 0 = 1 1 1 =
–   Nesik 0.7.0 alpha2237+16
−16
(+119)10.5 − 21.5
(+7−18=7)
32.8%
10.5 / 32
0.0%
−6
52.6%
2712
1.02
1426
= 0 0 1 0 0 0 1 = 1 0 0 0 = 1 0 0 = 0 = 0 = 1 0 0 0 0 0 1 1 = 0
–   NagaSkaki 5.122232+18
−18
(+114)14 − 18
(+11−15=6)
43.8%
14.0 / 32
0.0%
+68
51.4%
2588
1.29
1330
1 1 1 = 0 0 0 1 = 0 1 0 0 0 1 1 0 = 1 0 0 0 1 0 = 0 1 = 0 = 1 0
–   Sunsetter C10.3 64-bit JA2232+16
−16
(+114)10 − 22
(+7−19=6)
31.3%
10.0 / 32
0.0%
−26
56.2%
2739
0.77
1538
1 1 = 0 0 0 1 = 0 = 0 0 1 0 0 = 1 0 = 0 1 0 0 0 0 0 0 0 = 1 0 0
–   Alarm 0.93.12226+16
−16
(+108)14.5 − 17.5
(+14−17=1)
45.3%
14.5 / 32
0.0%
+67
51.5%
2906
1.17
1498
0 0 0 1 0 1 1 0 1 0 = 0 1 1 1 1 1 0 0 1 1 1 0 0 0 1 0 0 1 0 0 0
–   Fortress 1.622216+15
−15
(+98)8.5 − 23.5
(+4−19=9)
26.6%
8.5 / 32
0.0%
−66
51.3%
2325
0.95
1192
0 = 0 1 0 0 0 1 = 0 = = = 0 0 0 0 1 0 = 0 0 0 = 1 = 0 0 0 0 = 0
–   WJChess 1.642215+16
−16
(+97)13 − 19
(+10−16=6)
40.6%
13.0 / 32
0.0%
+26
53.7%
2847
0.95
1528
= = 1 0 0 1 1 1 0 0 1 = 0 0 = 1 0 1 0 0 0 1 0 0 1 1 0 = 0 0 0 =
–   Gk 0.90 64-bit JA2194+16
−16
(+76)12 − 20
(+10−18=4)
37.5%
12.0 / 32
0.0%
−21
57.3%
2393
0.48
1371
0 0 0 1 0 0 1 = 1 0 0 = 1 0 0 1 0 0 0 0 0 0 1 1 0 1 1 = 0 1 = 0
–   Alf 1.09 JA2193+17
−17
(+75)12 − 20
(+9−17=6)
37.5%
12.0 / 32
0.0%
−17
53.7%
2128
0.85
1143
1 0 1 1 0 0 1 1 0 0 1 = 1 = 0 = = 0 = 0 0 0 0 1 = 0 0 0 1 0 0 0
–   Clarabit 1.00 64-bit2193+18
−18
(+75)11 − 21
(+7−17=8)
34.4%
11.0 / 32
0.0%
−36
50.5%
2823
0.93
1427
= = 0 0 1 0 0 1 0 0 0 0 0 = = 0 0 0 1 1 0 0 1 1 = = 1 = 0 0 = 0
–   Ghost 0.142189+17
−17
(+71)15 − 17
(+10−12=10)
46.9%
15.0 / 32
0.0%
+50
51.9%
1872
1.20
971
0 = = 1 0 0 = 0 0 0 1 1 1 = = 1 1 = 0 = 0 1 0 0 = 0 1 = = 0 1 1
–   Wing 2.0a2179+16
−16
(+61)16.5 − 15.5
(+14−13=5)
51.6%
16.5 / 32
0.0%
+73
45.8%
2494
1.06
1143
0 0 1 0 1 1 1 1 0 0 1 1 = = 0 0 0 0 1 0 = 1 0 = 0 1 1 0 1 = 1 1
–   Uragano 3D 0.872174+16
−16
(+56)12 − 20
(+9−17=6)
37.5%
12.0 / 32
0.0%
−35
51.7%
2603
0.72
1346
0 1 0 0 1 1 0 0 0 0 1 = 0 0 0 = 0 = 0 1 0 = = 0 1 1 0 0 1 1 0 =
–   Parrot 0707222161+17
−17
(+43)15 − 17
(+11−13=8)
46.9%
15.0 / 32
0.0%
+23
46.7%
1962
1.26
917
= = = 0 = = 0 1 0 1 1 1 1 1 0 0 = 1 0 0 0 0 0 1 = 1 = 0 1 0 1 0
–   Matheus 2.32144+15
−15
(+26)14 − 18
(+11−15=6)
43.8%
14.0 / 32
1.1%
−20
55.6%
2304
0.54
1280
1 0 0 0 0 0 0 = 0 0 0 0 0 = 0 1 1 = 1 0 1 1 1 1 = 0 = 1 = 1 0 1
–   Bodo 0.2b2137+15
−15
(+19)12 − 20
(+9−17=6)
37.5%
12.0 / 32
5.2%
−72
50.6%
2005
0.64
1014
0 = 0 1 0 = 1 0 0 0 0 0 0 = 1 0 1 1 1 0 1 1 0 = 1 0 = 0 0 0 = 0
–   Monarch 1.72131+16
−16
(+13)14 − 18
(+12−16=4)
43.8%
14.0 / 32
13.0%
−34
52.8%
2845
0.92
1503
1 0 1 0 0 = 0 1 1 1 1 0 0 0 0 1 = 0 0 0 1 0 0 = 0 1 1 1 0 1 0 =
–   Bestia 0.902122+15
−15
(+4)18.5 − 13.5
(+12−7=13)
57.8%
18.5 / 32
37.5%
+53
56.1%
1732
0.72
972
= 1 1 0 1 0 1 = = = = 0 1 1 = = 0 = 0 = = 1 0 0 1 1 1 1 = 1 = =
–   Ax 0.82119+15
−15
(+1)18.5 − 13.5
(+17−12=3)
57.8%
18.5 / 32
47.1%
+63
  
0 1 0 0 0 1 1 1 0 1 1 1 0 1 0 1 = 1 = 1 0 1 0 1 1 0 0 1 1 1 0 =
–   BigLion 2.23x2117+17
−17
(−1)15 − 17
(+13−15=4)
46.9%
15.0 / 32
54.9%
−25
50.5%
2818
0.64
1424
0 1 0 1 0 0 1 0 1 1 = 1 1 0 1 1 0 = 1 0 1 0 0 0 1 0 1 = 0 0 = 0
–   RDChess 3.232117+16
−16
(−1)13 − 19
(+9−15=8)
40.6%
13.0 / 32
52.8%
−67
51.4%
2145
1.06
1102
0 0 0 0 1 = 1 0 = 0 0 = 0 0 1 1 1 1 0 0 1 0 1 0 = 0 = = = 1 = 0
–   DelphiMax 2.92102+16
−16
(−16)21 − 11
(+20−10=2)
65.6%
21.0 / 32
92.1%
+115
55.7%
3077
0.90
1715
1 1 1 0 1 0 0 = 1 1 1 = 1 1 0 0 1 1 0 1 1 0 1 1 1 1 1 1 0 0 1 0
–   Armageddon 2.3082098+17
−17
(−20)18 − 14
(+12−8=12)
56.3%
18.0 / 32
95.8%
+22
56.1%
1886
0.72
1058
= = 1 1 0 = 0 1 0 = 0 = 1 0 0 = = 0 = 1 1 0 1 1 1 = 1 = = 1 1 =
–   Requiem 0.532084+15
−15
(−34)19.5 − 12.5
(+13−6=13)
60.9%
19.5 / 32
99.9%
+36
54.3%
1253
0.65
680
= 1 0 0 = 1 0 = = 1 1 = 0 0 = 1 1 1 1 1 = 1 = 1 = 1 0 1 = = = =
–   Small Potato 0.6.12082+16
−16
(−36)15 − 17
(+10−12=10)
46.9%
15.0 / 32
99.9%
−55
53.1%
1880
0.49
999
0 0 1 1 = = 0 = 1 = 1 0 0 0 = 1 0 0 1 0 = 0 = 1 1 = 0 = 1 1 0 =
–   Elephant 1.062075+16
−16
(−43)19 − 13
(+17−11=4)
59.4%
19.0 / 32
100.0%
+31
53.4%
2086
0.66
1114
= = 0 0 1 1 0 0 1 0 1 0 1 0 1 1 1 1 1 0 0 = 1 1 1 0 1 1 1 = 1 0
–   La Dame Blanche 2.0c2070+19
−19
(−48)16.5 − 15.5
(+13−12=7)
51.6%
16.5 / 32
100.0%
−35
51.9%
1736
1.14
901
= 1 = 1 1 0 0 0 = 0 1 1 1 = 1 0 = 0 0 0 = 0 0 1 1 1 0 1 1 = 1 0
–   Cilian 4.142069+16
−16
(−49)21 − 11
(+17−7=8)
65.6%
21.0 / 32
100.0%
+59
  
1 = 1 1 = 1 = 1 1 1 1 1 = 1 0 1 = 1 1 1 1 0 1 = = 0 = 0 0 0 1 0
–   Etude 0.1.22063+19
−19
(−55)17.5 − 14.5
(+15−12=5)
54.7%
17.5 / 32
100.0%
−17
53.9%
2472
0.58
1332
0 0 1 1 0 0 1 1 0 = 0 0 1 1 0 1 1 1 1 0 0 1 0 1 1 = 0 1 = = 1 =
–   Gullydeckel 2.16pl12062+19
−19
(−56)24 − 8
(+19−3=10)
75.0%
24.0 / 32
100.0%
+114
54.0%
2261
0.77
1220
= 0 1 = 1 1 = 1 1 1 = 1 1 = = 1 = 1 0 1 1 = 1 = 1 1 1 0 = 1 1 1
–   JanWillem 1.132062+16
−16
(−56)18.5 − 13.5
(+14−9=9)
57.8%
18.5 / 32
100.0%
−2
54.4%
1963
0.69
1068
0 0 = 1 = 0 0 1 0 = 0 1 = 1 = = 0 1 1 = 0 1 1 1 = 1 1 1 0 = 1 1
–   Marvin 1.3.02054+16
−16
(−64)17.5 − 14.5
(+15−12=5)
54.7%
17.5 / 32
100.0%
−28
51.4%
3318
1.02
1705
0 1 = 0 0 1 1 0 1 1 0 0 = = 0 0 1 1 1 1 1 = 1 0 = 1 0 0 1 1 0 1
–   Matant 5.042053+17
−17
(−65)13 − 19
(+10−16=6)
40.6%
13.0 / 32
100.0%
−138
50.8%
1819
0.83
924
0 1 1 0 0 0 0 0 = 0 0 1 = 1 = 1 0 0 = 0 0 1 = 1 0 1 1 1 = 0 0 0
–   SSEChessII 2.05 DC2049+17
−17
(−69)15 − 17
(+12−14=6)
46.9%
15.0 / 32
100.0%
−91
53.8%
2598
0.74
1397
0 1 0 1 0 0 0 1 0 0 1 = = 1 1 1 1 = 0 = 0 0 1 = 0 0 1 1 = 0 0 1
–   Faile 1.4.42042+15
−15
(−76)18.5 − 13.5
(+16−11=5)
57.8%
18.5 / 32
100.0%
−16
51.7%
2867
0.53
1481
= = 0 0 1 0 0 1 0 0 = 1 1 1 1 1 1 = 0 1 1 1 1 1 0 0 1 1 1 0 0 =
–   Smash 1.0.32036+17
−17
(−82)20 − 12
(+17−9=6)
62.5%
20.0 / 32
100.0%
+9
52.3%
2860
0.86
1495
0 0 1 0 1 = 1 0 1 1 = 1 = 1 1 1 1 1 1 = 0 0 = 1 1 0 = 1 0 1 1 0
–   Micro-Max 4.8 PIV DM2028+17
−17
(−90)19.5 − 12.5
(+16−9=7)
60.9%
19.5 / 32
100.0%
−10
75.8%
3249
0.85
2463
= 0 1 = 1 = 0 1 = 1 1 1 1 = 0 1 0 0 1 0 = 0 0 1 1 1 1 0 1 1 1 =
–   Sharper 0.172022+16
−16
(−96)22.5 − 9.5
(+20−7=5)
70.3%
22.5 / 32
100.0%
+63
51.5%
2323
0.82
1197
1 0 1 1 = 0 0 1 1 1 1 1 1 1 1 1 1 = 0 = 0 0 1 1 0 1 1 1 1 = 1 =
–   Mustang 4.972021+17
−17
(−97)19 − 13
(+13−7=12)
59.4%
19.0 / 32
100.0%
−37
50.3%
1581
0.90
795
0 = = = 1 0 1 1 1 0 = 0 1 1 = = 1 = 0 1 = 0 = 1 = 1 1 1 = = 1 0
–   Rival UCI 1.182021+17
−17
(−97)20 − 12
(+16−8=8)
62.5%
20.0 / 32
100.0%
−7
50.4%
2116
1.06
1066
1 1 1 0 1 = 1 1 1 0 1 1 0 = 0 1 1 0 = = 1 1 = = 1 0 = 0 1 1 0 =

Performance

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

Perf = C + 0.078 [±0.242] * 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