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Nurikabe Help

Rules / Objectives Summary

  • The completed grid is a sea of Blue water with White islands.
  • You have to find all of the islands.
  • The numbers tell you how many White squares are in each island.
  • All of the Blue water squares are connected.
  • 2x2 Blue water blocks are NOT allowed (2x2 White island blocks are).

See the Walkthrough for extra tips and tricks.

Nurikabe Puzzle


What are the numbers for?
These are the sizes of islands that can be found in the sea.

Move your mouse over the puzzle to see the answer.



Walkthrough

Help 1


Step 1
This is the start of the puzzle.

Solve this puzzle for yourself at the same time.

Help 2


Step 2
Any 1 clue/island must already be complete, and we can therefore make each adjoining square Blue.

Help 3


Step 3
These squares cannot be White as this would make the 4 and 5 clues part of the same island, which makes no sense.

Help 4


Step 4
All sea squares are connected, so the sea must be able to reach the indicated squares (that are already sea) so these squares are Blue.

Help 5


Step 5
These squares are the only place these islands can be, and must be White.

Help 6


Step 6
This square completes the 2 island, and hence must be White.

Help 7


Step 7
As the 2 island is complete, these squares cannot be White.

Help 8


Step 8
The left square must be sea otherwise we'd have an isolated portion of sea, which makes the right square the last piece of the 5 island.

Help 9


Step 9
As the 5 island is complete, these squares must be sea.

Help 10


Step 10
As a block of 2x2 sea isn't allowed this square must be White, and the only island long enough to reach is the 8.

Help 11


Step 11
There are a number of squares that simply cannot be reached by any island on the grid, and hence must be sea - these are some of the more obvious ones.

Help 12


Step 12
These squares must all be islands, two of which to avoid a 2x2 sea block, and the other to join the existing island towards the 8 clue.

Help 13


Step 13
These squares must be part of the 8 island.

Help 14


Step 14
The 8 island isn't long enough to go into these squares as well, as it only just reaches the square from step 10.

Help 15


Step 15
No island is long enough to reach these squares.

Help 16


Step 16
These must be White to avoid 2x2 sea blocks.

Help 17


Step 17
These must be White as each has only one possible island that can reach them. Once the White squares are known, those around them must be Blue to complete each clue.

Help 18


Step 18
These squares are (obviously) White.

Help 19


Step 19
This square cannot be reached by any island.

Help 20


Step 20
These must be White to avoid 2x2 sea blocks, this completes these two islands and those around them must be Blue.

Help 21


Step 21
This square must be Blue to avoid isolated sea, which leaves only three squares which must complete the 4 island.

Help 22


Step 22
The completed puzzle. Phew!


 

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