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. miggy
103
00:40.05
2. JaysKun 00:53.58
3. _
2
00:55.88
4. asdfhavcjklcjkl 00:59.46
5. A2Ragnell
17
01:13.09
6. tailor 01:35.90
7. Daheeamond
78
01:49.98
8. kbdude8 02:05.56
9. erichiro 02:10.30
10. oddsocks 02:49.85
11. bearjason 03:01.47
12. Hashibrown 03:13.35
13. GlennCRhoads 03:17.17
14. missPear
45
03:18.95
15. hiptopoker 03:26.92
16. Manuel2 03:54.58
17. JustDave 03:57.99
18. CakeCheese 05:12.45
19. yosiaki
71
05:13.14
20. Tezexlo
44
06:04.35
This Week
1. JaysKun 00:56.40
2. asdfhavcjklcjkl 01:05.94
3. tailor 01:41.38
4. Daheeamond
78
01:49.98
5. bearjason 03:09.12
6. GlennCRhoads 03:17.17
7. hiptopoker 03:30.91
8. Tezexlo
44
06:04.35
9. Lefog
12
06:39.79
10. w24w40w
34
07:33.78
11. AgnieszkaNesa
39
09:01.73
12.--- empty -----:--
13.--- empty -----:--
14.--- empty -----:--
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
Today
1. bearjason 04:17.10
2.--- empty -----:--
3.--- empty -----:--
4.--- empty -----:--
5.--- empty -----:--
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. bearn
198
00:35.53
2. miggy
103
00:42.07
3. haramey
195
00:50.97
4. vowels
209
01:01.77
5. numbrr
251
01:08.37
6. Daheeamond
78
01:25.97
7. A2Ragnell
17
01:29.82
8. Douglas Shamlin Jr.
638
01:32.36
9. schapel
38
02:10.13
10. a979453451
166
02:11.63
AO5
1. bearn
198
00:37.23
2. miggy
103
00:43.55
3. haramey
195
00:52.80
4. vowels
209
01:05.00
5. numbrr
251
01:06.60
6. Daheeamond
78
01:27.15
7. Douglas Shamlin Jr.
638
01:38.67
8. A2Ragnell
17
01:49.43
9. a979453451
166
02:12.63
10. XantheneL
45
02:15.51
AO12
1. bearn
198
00:40.26
2. miggy
103
00:47.51
3. haramey
195
00:56.31
4. vowels
209
01:13.23
5. numbrr
251
01:21.73
6. Daheeamond
78
01:43.30
7. Douglas Shamlin Jr.
638
02:11.52
8. a979453451
166
02:34.02
9. XantheneL
45
02:36.29
10. Dizmo12
108
02:57.27
Robots / programmatic solversinfo  
1.4s4f400:00.464
2.Charlie Li
61
00:00.518
3.nbjohnson00:00.691

* 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

2024-07-27 04:42:40

www.puzzle-nurikabe.com
Remove Ads