Kurodoko


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Kurodoko also known as Kuromasu is a logic puzzle with simple rules and challenging solutions.

The rules are simple.
Shade some cells black guided by number clues.

- Each number clue shows how many cells are "visible" from its place.
- "Visible" are all white cells up, down, left and right of the clue, terminated by a black cell or the grid edge. The cell with the number clue is also counted as visible.
- Other clue cells are considered transparent, so visibility continues through them.
- You can't shade clue cells black.
- All white cells must be connected orthogonally in a single group.
- Black cells can't touch orthogonally (diagonal touching is allowed).

Left click on a cell to make it black. Right click to mark with a dot. Click and drag to mark more than one cell.

Video Tutorial
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Kurodoko


5x5 Kurodoko | 7x7 Kurodoko | 10x10 Kurodoko | 15x15 Kurodoko | 20x20 Kurodoko

New Puzzle
This Month
1.numbrr
329
02:34.99
2.Reenolex
48
03:09.07
3.Silkid
49
03:27.13
4.Moonshine
36
03:40.74
5.nosleeplong
147
03:54.06
6.SweatyBetty 04:29.75
7.adminusff 04:30.68
8.dreadsom
112
04:50.13
9.Rickieman86
21
06:15.65
10.cloudspan
11
06:24.09
11.Tomas7407
17
06:34.82
12.qobi
244
06:45.29
13.wendylll
59
07:06.36
14.SleekBlaze
33
07:20.09
15.Dorice
276
07:33.87
16.JustGeee 07:40.66
17.quekjr 07:48.02
18.snekle
27
07:52.02
19.shoner
7
08:07.26
20.chenh 08:20.20
This Week
1.numbrr
329
02:34.99
2.Moonshine
36
03:40.74
3.SweatyBetty 04:29.75
4.adminusff 04:30.68
5.dreadsom
112
05:35.27
6.qobi
244
07:51.47
7.wendylll
59
08:05.97
8.daspore 08:24.47
9.Rickieman86
21
08:59.27
10.Tomas7407
17
08:59.91
11.shoner
7
09:14.94
12.JustGeee 09:52.30
13.xilli 11:52.73
14.1XMvv 12:09.67
15.mkmk
93
13:14.44
16.josim 13:32.51
17.RelaxedCockatoo
67
14:58.65
18.Joyous1 23:32.00
19.BeMature 24:44.17
20.xiongan 28:22.92
Today
1.dreadsom
112
06:49.32
2.daspore 08:24.47
3.wendylll
59
08:48.96
4.Tomas7407
17
08:59.91
5.RelaxedCockatoo
67
14:58.65
6.--- empty -----:--
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
11.--- empty -----:--
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1.liyan
165
02:52.98
2.numbrr
329
02:53.78
3.PuzzleMaestro
109
03:16.10
4.Silkid
49
03:24.74
5.daanbe
244
03:30.24
6.Reenolex
48
03:31.40
7.Make
288
04:16.76
8.MS Paint
112
04:27.61
9.RegalCosmos
100
04:29.02
10.먼지
91
04:31.96
AO5
1.numbrr
329
03:05.96
2.Silkid
49
03:29.26
3.liyan
165
03:31.22
4.daanbe
244
03:41.09
5.Reenolex
48
03:42.16
6.PuzzleMaestro
109
04:01.67
7.RegalCosmos
100
04:21.64
8.Make
288
04:29.17
9.먼지
91
04:38.70
10.MS Paint
112
04:41.52
AO12
1.numbrr
329
03:54.01
2.Silkid
49
03:56.65
3.Reenolex
48
04:18.34
4.daanbe
244
04:23.96
5.PuzzleMaestro
109
05:08.81
6.Make
288
05:09.81
7.MS Paint
112
05:16.44
8.mslamhoa
241
05:21.25
9.sealhy
202
05:27.98
10.Moonshine
36
05:33.68
Robots / programmatic solversinfo  
1.siebi
1
00:00.184
2.AutumnWind75
1
00:00.756
3.Paul Bismuth
1
00:05.669

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
You need to be logged in to track your averages

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