CCRL 40/4
Downloads and Statistics
December 7, 2019
Testing summary:
Total: 2'143'600 games
played by 2'509 programs
29100 CPU days (X2 4600+)

White wins: 830'432 (38.7%)
Black wins: 670'629 (31.3%)
Draws: 642'539 (30.0%)
White score: 53.7%

Engine Details

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Show each game results
Shallow 2 rev8 64-bit#223  (2429+17
−17
)Quote
This is one of the 2 Shallow versions we tested: Compare them!
OpponentEloDiffResultsScoreLOSPerf
–   Cheng 4.39 64-bit2945+9
−9
(+516)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Demolito 2017-06-18 64-bit2885+19
−19
(+456)0 − 4
(+0−4=0)
0.0%
0.0 / 4
0.0%
−INF
0 0 0 0
–   Octochess r5506 64-bit2824+14
−14
(+395)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Frenzee 3.5.19 64-bit2770+8
−8
(+341)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
0.0%
+310
=
–   Jonny 4.002763+7
−6
(+334)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Cheese 1.9 64-bit2731+12
−12
(+302)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Marvin 3.0.0 64-bit2706+17
−17
(+277)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   chess22k 1.4 64-bit2689+17
−16
(+260)6.5 − 23.5
(+1−18=11)
21.7%
6.5 / 30
0.0%
+70
= = 0 0 = 0 0 = 0 = 0 1 0 0 0 = 0 0 0 0 = = 0 = = 0 = 0 0 0
–   Alaric 7072663+7
−7
(+234)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
0.0%
+264
=
–   ECE X3 64-bit2655+15
−15
(+226)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Glass 2.0 64-bit2610+9
−9
(+181)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Jellyfish 1.1 64-bit2610+10
−11
(+181)0.5 − 1.5
(+0−1=1)
25.0%
0.5 / 2
0.0%
+1
= 0
–   Caligula 0.9g2606+18
−18
(+177)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Pharaon 3.5.12603+7
−7
(+174)1 − 0
(+1−0=0)
100.0%
1.0 / 1
0.0%
+INF
1
–   DanaSah 7.02598+16
−16
(+169)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Floyd 0.9 64-bit2583+12
−12
(+154)1.5 − 0.5
(+1−0=1)
75.0%
1.5 / 2
0.0%
+273
1 =
–   Pseudo 0.7c2576+8
−8
(+147)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
0.0%
+177
=
–   GarboChess 3.0 64-bit2575+22
−22
(+146)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   SOS 5.12573+7
−7
(+144)1.5 − 0.5
(+1−0=1)
75.0%
1.5 / 2
0.0%
+263
1 =
–   Aristarch 4.502566+7
−7
(+137)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   FrankWalter 2.4.0 64-bit2547+17
−17
(+118)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Betsabe II 1.842543+12
−12
(+114)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   AnMon 5.752539+7
−7
(+110)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Shield 1.3.1 64-bit2539+17
−17
(+110)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
0.0%
+140
=
–   Pupsi2 0.092537+15
−15
(+108)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
0.0%
+77
=
–   Capivara LK 0.09b02g 64-bit2537+16
−16
(+108)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
0.0%
+77
=
–   Hermann 2.8 64-bit2531+9
−9
(+102)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Pepito 1.59.2 64-bit2521+10
−11
(+92)0.5 − 1.5
(+0−1=1)
25.0%
0.5 / 2
0.0%
−65
0 =
–   chess22k 1.3 64-bit2515+28
−28
(+86)13.5 − 16.5
(+9−12=9)
45.0%
13.5 / 30
0.0%
+54
= 0 = 0 1 0 = 1 0 = 0 = 0 1 = 0 1 1 1 0 0 1 0 1 0 0 = 1 = =
–   Orion 0.5 64-bit2514+12
−12
(+85)15.5 − 30.5
(+9−24=13)
33.7%
15.5 / 46
0.0%
−27
0 0 0 = 0 = 0 0 1 0 = 0 = 0 = 0 0 1 = 0 0 1 0 0 1 0 1 0 = 1 0 0 0 0 = 1 0 1 1 0 = = = = 0 =
–   Caligula 0.82507+17
−17
(+78)17 − 23
(+11−17=12)
42.5%
17.0 / 40
0.0%
+27
= 0 1 0 = = 0 = 1 0 1 0 0 0 1 1 = = 0 0 1 0 = 0 1 0 1 = = 0 1 0 = 0 0 = 0 1 = 1
–   Little Goliath Evolution 3.122505+7
−6
(+76)0.5 − 1.5
(+0−1=1)
25.0%
0.5 / 2
0.0%
−81
0 =
–   Green Light Chess 3.01.2.22505+8
−8
(+76)1 − 0
(+1−0=0)
100.0%
1.0 / 1
0.0%
+INF
1
–   Trace 1.37a2500+7
−7
(+71)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Bruja 1.9.1 64-bit2491+10
−9
(+62)2 − 2
(+2−2=0)
50.0%
2.0 / 4
0.0%
+62
1 0 1 0
–   Magnum 4.0 32-bit2491+15
−14
(+62)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Tao 5.62486+9
−9
(+57)0 − 2
(+0−2=0)
0.0%
0.0 / 2
0.0%
−INF
0 0
–   Bagatur 1.5e 64-bit2485+19
−19
(+56)14.5 − 15.5
(+9−10=11)
48.3%
14.5 / 30
0.0%
+44
1 = = 1 0 1 = 1 = 0 1 = 0 0 0 1 0 = 0 = 0 = 1 1 = 0 0 1 = =
–   Gothmog 1.0b102483+16
−16
(+54)0 − 1
(+0−1=0)
0.0%
0.0 / 1
0.0%
−INF
0
–   Winter 0.1.1 64-bit2480+17
−18
(+51)12.5 − 12.5
(+9−9=7)
50.0%
12.5 / 25
0.0%
+51
= = 1 = 1 1 0 1 = 0 0 = 1 0 = 1 0 0 1 1 0 = 1 0 0
–   Kiwi 0.6d 64-bit2470+10
−10
(+41)1 − 0
(+1−0=0)
100.0%
1.0 / 1
0.0%
+INF
1
–   Xpdnt 0910072469+12
−12
(+40)1 − 1
(+1−1=0)
50.0%
1.0 / 2
0.0%
+9
0 1
–   Jumbo 0.6.10 64-bit2461+18
−18
(+32)16.5 − 13.5
(+15−12=3)
55.0%
16.5 / 30
0.4%
+71
0 0 1 1 1 1 1 1 0 = 0 1 0 0 1 1 1 0 1 1 1 0 0 1 0 = 0 0 = 1
–   Myrddin 0.87 64-bit 4CPU2458+29
−29
(+29)17.5 − 18.5
(+11−12=13)
48.6%
17.5 / 36
3.6%
+20
0 1 = 1 0 0 = 1 1 = 1 1 = 1 = 0 = 1 = = 0 0 1 0 = = = 0 0 1 = 0 = 0 1 0
–   Anatoli 0.35k2455+15
−15
(+26)19.5 − 37.5
(+12−30=15)
34.2%
19.5 / 57
0.9%
−86
0 1 1 0 0 1 1 0 1 0 0 0 = 0 1 = 0 = 0 0 1 1 = 0 = = 0 0 = = 0 0 0 = = 1 0 1 0 0 = = 0 0 = = 0 0 0 1 0 0 0 0 0 = 1
–   Counter 1.22447+10
−9
(+18)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
3.1%
+48
=
–   Matacz 1.42446+8
−8
(+17)0.5 − 1.5
(+0−1=1)
25.0%
0.5 / 2
3.2%
−162
0 =
–   Lozza 1.18 64-bit2445+16
−16
(+16)0 − 1
(+0−1=0)
0.0%
0.0 / 1
8.3%
−INF
0
–   Ares 1.005.2 64-bit2441+13
−13
(+12)1 − 0
(+1−0=0)
100.0%
1.0 / 1
12.3%
+INF
1
–   Soldat 4.0 beta 64-bit2440+18
−18
(+11)15.5 − 16.5
(+11−12=9)
48.4%
15.5 / 32
17.9%
+1
1 1 = 1 0 1 = = 0 1 = 0 0 1 = 0 1 1 0 = 0 0 0 = 0 = = 0 1 1 0 1
–   MadChess 2.2 64-bit2436+14
−14
(+7)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
25.4%
−23
=
–   Bumblebee 1.0 64-bit2435+18
−18
(+6)30 − 20
(+23−13=14)
60.0%
30.0 / 50
29.0%
+73
0 1 1 1 0 1 = = = = 1 1 1 = 0 = 1 1 0 0 1 1 0 = 0 = 1 1 0 = 0 = 1 1 0 0 1 1 = 0 0 = 1 1 1 = 1 1 = 1
–   Abrok 5.02435+9
−9
(+6)0 − 1
(+0−1=0)
0.0%
0.0 / 1
23.3%
−INF
0
–   LambChop 10.992434+8
−8
(+5)0 − 2
(+0−2=0)
0.0%
0.0 / 2
28.1%
−INF
0 0
–   Ares 1.005.2.1 64-bit2433+18
−18
(+4)23 − 23
(+16−16=14)
50.0%
23.0 / 46
36.9%
+2
1 = 1 0 0 = 0 0 1 0 0 = 0 0 0 = 1 1 = 1 0 1 = = 1 0 1 = = 1 = 1 0 1 = 0 1 = 0 1 1 0 0 = = 1
–   Nemeton 1.82433+15
−15
(+4)12.5 − 13.5
(+9−10=7)
48.1%
12.5 / 26
35.8%
−11
0 = 0 1 1 1 1 1 = = 0 1 0 0 0 = = = 0 = 0 1 1 0 0 1
–   Flux 2.2.12430+24
−24
(+1)1 − 0
(+1−0=0)
100.0%
1.0 / 1
47.1%
+INF
1
–   Eeyore 1.52 64-bit2427+10
−9
(−2)0 − 1
(+0−1=0)
0.0%
0.0 / 1
56.8%
−INF
0
–   Nejmet 3.072425+8
−8
(−4)1 − 1
(+0−0=2)
50.0%
1.0 / 2
65.1%
−34
= =
–   Quark 2.352423+8
−8
(−6)2.5 − 1.5
(+2−1=1)
62.5%
2.5 / 4
72.3%
+76
1 = 1 0
–   Gromit 3.822423+17
−17
(−6)29 − 31
(+21−23=16)
48.3%
29.0 / 60
66.9%
−16
= 1 0 0 0 = = = 0 1 0 = = 0 = = = 1 1 1 0 = = 0 1 0 = 0 1 0 = 1 0 1 1 1 1 1 0 0 1 = = 0 1 0 1 1 0 1 0 1 = 0 0 0 0 1 1 0
–   Caligula 0.7b2421+16
−16
(−8)25.5 − 31.5
(+19−25=13)
44.7%
25.5 / 57
75.1%
−45
0 = 0 0 = = 0 1 1 0 = 0 1 0 = 0 1 1 = 1 0 = 0 0 1 1 0 0 = 0 0 0 0 0 0 1 1 = 1 = 1 0 = 1 1 0 1 1 = 0 0 1 1 = 0 1 0
–   RomiChess P3n 64-bit2415+14
−14
(−14)25.5 − 19.5
(+22−16=7)
56.7%
25.5 / 45
89.7%
+41
= 1 = 1 0 1 0 1 0 0 = 0 0 0 1 1 0 1 = 1 1 1 = 1 0 0 = 1 0 0 1 1 0 0 1 0 1 1 1 1 = 0 1 1 1
–   Monolith 0.3 64-bit2411+17
−17
(−18)17 − 13
(+13−9=8)
56.7%
17.0 / 30
93.5%
+33
1 1 0 1 = 0 = 0 1 0 1 0 1 1 = 0 = 1 = 0 0 1 1 = = 1 = 1 1 0
–   chess22k 1.2 64-bit2410+18
−17
(−19)28.5 − 21.5
(+20−13=17)
57.0%
28.5 / 50
94.0%
+25
1 = = 1 = 0 0 = 0 = = = 1 = 1 1 0 1 0 1 0 = 1 = 0 1 0 0 1 = = = 1 1 1 1 0 = = 1 1 1 = 1 0 1 = 1 0 0
–   Simplex 0.9.8 64-bit2409+10
−10
(−20)0 − 1
(+0−1=0)
0.0%
0.0 / 1
97.5%
−INF
0
–   Teki 1 64-bit2406+18
−18
(−23)0 − 1
(+0−1=0)
0.0%
0.0 / 1
96.4%
−INF
0
–   Ifrit m1.8 64-bit2404+11
−11
(−25)1 − 1
(+0−0=2)
50.0%
1.0 / 2
99.4%
−25
= =
–   OliThink 5.3.2 64-bit2402+13
−13
(−27)0.5 − 1.5
(+0−1=1)
25.0%
0.5 / 2
99.3%
−184
= 0
–   TJchess 1.3 64-bit2399+14
−14
(−30)1 − 1
(+1−1=0)
50.0%
1.0 / 2
99.7%
−30
0 1
–   Bearded N44.5 64-bit2391+18
−18
(−38)27.5 − 22.5
(+20−15=15)
55.0%
27.5 / 50
99.9%
−2
0 0 0 0 = 1 = 0 = = 0 1 1 0 0 1 1 1 0 = 1 1 1 1 1 0 0 1 1 = 1 0 = = = 1 = 1 = 1 = 1 = 0 = 0 0 1 1 =
–   PostModernist 10162389+10
−10
(−40)13 − 7
(+11−5=4)
65.0%
13.0 / 20
100.0%
+69
= 1 0 0 = 1 = 0 1 1 0 1 1 1 1 = 1 1 1 0
–   Leila 0.53h2388+8
−8
(−41)0.5 − 1.5
(+0−1=1)
25.0%
0.5 / 2
100.0%
−160
0 =
–   RomiChess P3m 64-bit2387+15
−15
(−42)12.5 − 17.5
(+6−11=13)
41.7%
12.5 / 30
100.0%
−95
0 = = 1 0 = 0 0 = 0 1 = 0 = = 1 0 = 1 1 0 = = 1 = = 0 = 0 0
–   Diablo 0.5.12385+10
−9
(−44)11 − 9
(+8−6=6)
55.0%
11.0 / 20
100.0%
−7
1 0 0 = 1 = = 0 0 = 1 1 0 1 1 0 1 1 = =
–   Myrddin 0.87 64-bit2381+12
−12
(−48)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Der Bringer 1.92374+8
−8
(−55)11.5 − 9.5
(+8−6=7)
54.8%
11.5 / 21
100.0%
−23
0 1 0 = = 1 1 = 1 = = 0 0 = 1 1 1 0 1 0 =
–   Patzer 3.802374+9
−9
(−55)1 − 1
(+1−1=0)
50.0%
1.0 / 2
100.0%
−55
0 1
–   Terra 3.42368+10
−10
(−61)11 − 10
(+7−6=8)
52.4%
11.0 / 21
100.0%
−46
= = 1 1 1 1 0 1 = 0 0 = = = = 1 0 1 0 0 =
–   The Crazy Bishop 00522364+9
−9
(−65)11.5 − 8.5
(+9−6=5)
57.5%
11.5 / 20
100.0%
−13
= 0 0 1 = 0 1 = 1 0 1 1 1 0 1 1 = 0 1 =
–   Lozza 1.16 64-bit2360+14
−14
(−69)14 − 7
(+10−3=8)
66.7%
14.0 / 21
100.0%
+35
= = 1 1 0 1 = 0 1 = 0 = 1 1 = 1 1 = = 1 1
–   Schooner 1.5 64-bit2357+17
−17
(−72)12 − 8
(+10−6=4)
60.0%
12.0 / 20
100.0%
+1
= 0 1 = 1 0 1 1 = 1 1 1 1 = 0 1 0 0 1 0
–   Amateur 2.822351+8
−8
(−78)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Alex 2.14a 64-bit2348+10
−10
(−81)2 − 0
(+2−0=0)
100.0%
2.0 / 2
100.0%
+INF
1 1
–   Nemeton 1.412347+17
−17
(−82)14.5 − 5.5
(+13−4=3)
72.5%
14.5 / 20
100.0%
+96
1 1 1 1 0 1 1 = 1 1 1 = 1 0 1 1 0 1 = 0
–   Popochin 4.1 64-bit2346+17
−17
(−83)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
100.0%
−113
=
–   Tigran 2.4n 64-bit2346+11
−11
(−83)11 − 6
(+9−4=4)
64.7%
11.0 / 17
100.0%
+19
1 0 = 1 0 1 1 0 1 = 0 1 = = 1 1 1
–   Jumbo 0.5.3 64-bit2340+18
−18
(−89)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
100.0%
−58
=
–   Arion 1.72333+7
−7
(−96)0.5 − 1.5
(+0−1=1)
25.0%
0.5 / 2
100.0%
−275
= 0
–   EveAnn 1.722329+14
−13
(−100)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Sorgenkind 0.42329+12
−12
(−100)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Chezzz 1.0.32324+9
−9
(−105)16.5 − 3.5
(+15−2=3)
82.5%
16.5 / 20
100.0%
+164
0 = 1 1 1 = 1 0 1 1 1 1 1 = 1 1 1 1 1 1
–   Mediocre 0.5 64-bit2320+12
−12
(−109)9 − 11
(+6−8=6)
45.0%
9.0 / 20
100.0%
−143
= 1 0 0 = 0 0 1 0 0 1 1 1 = 1 0 0 = = =
–   Jazz 840 64-bit2320+19
−19
(−109)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
100.0%
−139
=
–   Barbarossa 0.4.0 64-bit2319+12
−12
(−110)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Absolute Zero 2.4.7.2 64-bit2318+12
−12
(−111)12.5 − 8.5
(+9−5=7)
59.5%
12.5 / 21
100.0%
−47
= 1 = 1 = 1 = 1 0 0 1 1 = 0 1 0 1 = 0 = 1
–   Averno 0.812307+9
−9
(−122)10.5 − 8.5
(+8−6=5)
55.3%
10.5 / 19
100.0%
−87
1 = 0 0 = 1 0 = 1 = 0 1 0 1 0 1 1 = 1
–   Asterisk 0.62307+10
−10
(−122)2 − 1
(+2−1=0)
66.7%
2.0 / 3
100.0%
+35
0 1 1
–   Thor's Hammer 2.29 64-bit2303+28
−28
(−126)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   KnightX 1.922297+7
−8
(−132)1.5 − 0.5
(+1−0=1)
75.0%
1.5 / 2
100.0%
+25
= 1
–   Paladin 0.1 64-bit2272+14
−14
(−157)12.5 − 8.5
(+12−8=1)
59.5%
12.5 / 21
100.0%
−75
0 0 1 1 1 0 1 1 0 1 0 = 1 1 1 1 1 1 0 0 0
–   Esc 1.162267+9
−9
(−162)16 − 4
(+14−2=4)
80.0%
16.0 / 20
100.0%
+70
1 1 1 1 1 1 1 1 = = = = 1 0 0 1 1 1 1 1
–   Natwarlal 0.142261+8
−8
(−168)0.5 − 0.5
(+0−0=1)
50.0%
0.5 / 1
100.0%
−137
=
–   KMTChess 1.2.1 64-bit2260+17
−17
(−169)15 − 5
(+13−3=4)
75.0%
15.0 / 20
100.0%
+26
1 1 1 1 1 = 0 = 1 = 1 1 1 1 0 = 1 1 0 1
–   Butcher 1.64 64-bit2256+22
−22
(−173)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Anechka 0.082235+8
−8
(−194)1.5 − 0.5
(+1−0=1)
75.0%
1.5 / 2
100.0%
−14
= 1
–   Chispa 4.0.32207+8
−8
(−222)16 − 5
(+14−3=4)
76.2%
16.0 / 21
100.0%
−19
1 1 1 0 = 1 0 = 1 1 1 1 0 = 1 1 = 1 1 1 1
–   Beowulf 2.4a 32-bit2203+11
−10
(−226)15.5 − 4.5
(+13−2=5)
77.5%
15.5 / 20
100.0%
−26
1 1 1 1 1 1 = 0 = = 1 0 1 1 1 1 1 = = 1
–   RattateChess 1.0 Nosferatu2199+12
−12
(−230)14 − 6
(+12−4=4)
70.0%
14.0 / 20
100.0%
−79
= = 1 1 1 1 1 1 1 0 0 1 1 0 0 = 1 1 = 1
–   Latista (Sinobyl) 1.52195+11
−11
(−234)16 − 4
(+13−1=6)
80.0%
16.0 / 20
100.0%
−23
= = = 1 = = 1 1 1 1 1 0 = 1 1 1 1 1 1 1
–   Atak 6.82184+10
−10
(−245)1.5 − 0.5
(+1−0=1)
75.0%
1.5 / 2
100.0%
−87
1 =
–   Madeleine 0.22182+9
−9
(−247)15.5 − 4.5
(+14−3=3)
77.5%
15.5 / 20
100.0%
−26
1 1 1 1 = 1 1 0 1 1 1 0 1 1 1 1 1 = 0 =
–   WJChess 1.642131+9
−9
(−298)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Matheus 2.32059+9
−9
(−370)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Freyr 1.068 64-bit2008+20
−20
(−421)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   GChess IV 0.2.01732+13
−13
(−697)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1
–   Bullitchess 1.0 64-bit1612+21
−21
(−817)1 − 0
(+1−0=0)
100.0%
1.0 / 1
100.0%
+INF
1

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Created in 2005-2013 by CCRL team
Last games added on December 7, 2019