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

Nurikabe


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

This Month
1. boru
100
00:02.00
2. asdfhavcjklcjkl 00:02.18
3. CP2023 00:03.00
4. Moozh 00:03.06
5. RelaxedCockatoo
62
00:03.14
6. matsagad
37
00:03.51
7. Manuel2 00:03.82
8. ghjgghj 00:04.04
9. TheLoneWolf 00:04.33
10. Solus
26
00:04.34
11. Sombro64 00:04.35
12. mathandplants 00:04.42
13. EdenGameMaster
15
00:04.43
14. COlDAiR
16
00:04.62
15. GregInBcn 00:04.99
16. davsbos 00:05.00
17. Solander
52
00:05.38
18. dtyamada
87
00:05.68
19. Victorious1
155
00:06.09
20. Aimar
22
00:06.26
This Week
1. Moozh 00:03.22
2. matsagad
37
00:03.51
3. RelaxedCockatoo
62
00:03.77
4. TheLoneWolf 00:04.33
5. Solus
26
00:04.34
6. Sombro64 00:04.35
7. mathandplants 00:04.42
8. EdenGameMaster
15
00:04.43
9. dtyamada
87
00:05.68
10. Victorious1
155
00:06.09
11. Vezzick
22
00:06.86
12. GregInBcn 00:06.91
13. 白切叉燒鵝
48
00:09.32
14. 인공달
11
00:10.18
15. bearjason 00:10.68
16. jtmcada
52
00:12.83
17. 凉風星宫
16
00:14.70
18. DottorickNadia
13
00:19.52
19. CLAVDIVS
33
00:20.32
20. Aal
14
00:24.56
Today
1. Sombro64 00:04.35
2. 白切叉燒鵝
48
00:09.32
3. bearjason 00:10.68
4. jtmcada
52
00:12.83
5. 凉風星宫
16
00:14.70
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. vowels
214
00:01.35
2. Douglas Shamlin Jr.
660
00:01.45
3. nabi
92
00:01.64
4. haramey
210
00:01.70
5. jaybrainer
209
00:01.75
6. BingBongBob
107
00:01.76
7. sfumato
164
00:01.78
8. bearn
201
00:01.91
9. numbrr
268
00:02.17
10. jai22933
23
00:02.19
AO5
1. vowels
214
00:01.43
2. nabi
92
00:01.50
3. Douglas Shamlin Jr.
660
00:01.51
4. haramey
210
00:01.78
5. jaybrainer
209
00:01.79
6. BingBongBob
107
00:01.88
7. sfumato
164
00:01.89
8. bearn
201
00:01.93
9. jai22933
23
00:02.29
10. 대릴 갸자석아
84
00:02.36
AO12
1. vowels
214
00:01.70
2. Douglas Shamlin Jr.
660
00:01.71
3. nabi
92
00:01.75
4. haramey
210
00:02.06
5. jaybrainer
209
00:02.14
6. bearn
201
00:02.24
7. BingBongBob
107
00:02.27
8. sfumato
164
00:02.29
9. 대릴 갸자석아
84
00:02.58
10. jai22933
23
00:02.61
Robots / programmatic solversinfo  
1.Charlie Li
61
00:00.208
2.nbjohnson00:00.407
3.俊杰_Charles
4
00:01.129

* 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:  hideshow

2024-12-03 19:41:40

www.puzzle-nurikabe.com
Remove Ads