Nurikabe


Translate this site.

Nurikabe is a logic puzzle with a bit complicated rules and challenging solutions.

The rules are not so simple. :)
You have a grid of squares Some cells of the grid start containing numbers. The goal is to determine whether each of the cells of the grid is "black" or "white" (Islands in the Stream calls these "water" and "land" respectively). The black cells form "the nurikabe" (Islands in the Stream calls it "the stream"): they must all be orthogonally contiguous (form a single polyomino), number-free, and contain no 2x2 or larger solid rectangles (Islands in the Stream calls such illegal blocks "pools"). The white cells form "islands" (which is where Islands in the Stream got its name): each number n must be part of an n-omino composed only of white cells. All white cells must belong to exactly one island; islands must have exactly one numbered cell. Solvers will typically shade in cells they have deduced to be black and dot (non-numbered) cells deduced to be white.
Left click on a square to make it black. Right click to mark with dot. Click and drag to mark more than one square.

Video Tutorial
Hide the rules

Share

Disable Ads
Nurikabe


5x5 Nurikabe Easy | 5x5 Nurikabe Hard | 7x7 Nurikabe Easy | 7x7 Nurikabe Hard | 10x10 Nurikabe Easy | 10x10 Nurikabe Hard | 12x12 Nurikabe Easy | 12x12 Nurikabe Hard | 15x15 Nurikabe Easy | 15x15 Nurikabe Hard | 20x20 Nurikabe Easy

This Month
1.MerickOWA01:17.26
2.PrivateJune01:17.64
3.JaysKun01:20.16
4.tailor01:43.52
5.Pardyboy01:54.62
6.BoerBaan01:58.55
7.supernoob
21
02:13.31
8.Jiu51602:13.92
9.a979453451
83
02:16.99
10.oddsocks02:23.93
11.Stemism
78
02:27.79
12.contrapdx02:34.04
13.million
34
02:45.39
14.schapel
14
02:48.79
15.wiglicker03:00.48
16.hasuu03:06.65
17.RelaxedCockatoo03:11.10
18.MingQuk03:18.67
19.Danila54RUS03:21.91
20.EinsteinsBarber
40
03:33.11
This Week
1.MerickOWA01:17.26
2.JaysKun01:20.16
3.Jiu51602:13.92
4.BoerBaan02:20.69
5.million
34
02:45.39
6.schapel
14
02:48.79
7.hasuu03:21.08
8.HackMan03:57.04
9.ALXDR04:26.20
10.Speedygonzales04:41.76
11.Danila54RUS05:12.20
12.JohnnyB05:13.47
13.AJfinch06:02.57
14.TomKorn06:08.31
15.s56squared06:55.03
16.DaveS9107:01.76
17.AlamMala
20
07:23.49
18.JCCold6179
13
07:54.97
19.celphyre
43
09:45.77
20.azzza
13
09:49.11
Today
1.BoerBaan02:20.69
2.ALXDR04:26.20
3.JohnnyB05:13.47
4.Danila54RUS05:15.70
5.AJfinch06:08.70
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.Stemism
78
02:30.06
2.a979453451
83
02:36.00
3.anonymous
47
02:41.45
4.supernoob
21
02:44.24
5.sfumato
68
03:03.07
6.schapel
14
03:39.28
7.Chronodrax
17
03:39.71
8.arcer
48
03:42.86
9.anonymous
14
03:57.91
10.markelobitx
32
04:07.63
AO5
1.Stemism
78
02:36.81
2.a979453451
83
02:38.33
3.anonymous
47
02:50.13
4.supernoob
21
02:55.19
5.sfumato
68
03:45.20
6.arcer
48
04:11.22
7.markelobitx
32
04:22.88
8.schapel
14
04:39.31
9.anonymous
14
04:54.90
10.Joel cain
14
05:28.12
AO12
1.a979453451
83
02:50.94
2.supernoob
21
03:17.11
3.Stemism
78
03:31.73
4.anonymous
14
08:18.58
5.anonymous
65
30:11.75
6.Dunnowhattodo
54
37:40.08
7.--- empty -----:--
8.--- empty -----:--
9.--- empty -----:--
10.--- empty -----:--
Robots / programmatic solversinfo  
1.Charlie Li
60
00:00.518
2.nbjohnson00:00.691
3.--- empty -----:--

* 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


Find your position in

Enter screen name:


More Logic Puzzles:  hide show

2021-07-30 15:47:52

www.puzzle-nurikabe.com
Disable Ads