Jump to: Home
All puzzles
Word puzzles
Logic puzzles
Picture puzzles
Crosswords
Clients / Plaudits
Contact Us
Any Puzzle Media

Nurikabe example
Nurikabe logic puzzles

Also known as: Cell Structure, Islands, Islands in the Stream

Nurikabe is one of my favourite puzzles of all time. The aim is simple but the puzzle has a great deal of subtlety - yet is well-bounded enough that you can nearly always make progress on any puzzle, given enough time thinking about it!

The aim of Nurikabe is to shade in certain squares so that every given number in the puzzle remains as part of a continuous unshaded area of the stated number of squares, with the proviso that there can be only one number per unshaded area. Shaded squares cannot form any solid 2x2 (or larger) areas, and together all the shaded squares must form one single continuous area. White areas cannot touch each other in either a horizontal or vertical direction.

One of the nice things about Nurikabe is that there are various ways to think about solving a puzzle, all of which can help when you get stuck. You can look for 2x2 areas that can only be reached by one (or a limited number) of unshaded areas, or you can try growing areas from the existing numbers - or you can do the converse, growing regions that must be there but which you don't yet know the size of.

There is only ever one possible solution to a Nurikabe puzzle, which can always be reached via reasonable logical deduction.

We can supply Nurikabe puzzles at a range of sizes and difficulties, and all of our Nurikabe puzzles are entirely hand-made (although we do have dedicated software we have written which checks the result to ensure that we don't make a mistake).

Sample Nurikabe puzzles (click to view press-ready PDF version):
10x10 Nurikabe
10x10 Nurikabe
10x10 Nurikabe solution
10x10 Nurikabe solution
Easy Nurikabe
Easy Nurikabe
Solved Nurikabe
Solved Nurikabe
Symmetrical Nurikabe
Symmetrical Nurikabe
Tricky Nurikabe
Tricky Nurikabe
Reasoning & Logic puzzles
Choose a main puzzle type to view sub-categories, variations and samples:

3D Sudoku
3D Sudoku puzzles
Binary Puzzle
Binary Puzzle puzzles
Calcudoku
Calcudoku puzzles
Dominoes
Dominoes puzzles
Easy as ABC
Easy as ABC puzzles
Fences
Fences puzzles
Futoshiki
Futoshiki puzzles
Hanjie
Hanjie puzzles
Hashi
Hashi puzzles
Heyawake
Heyawake puzzles
Hitori
Hitori puzzles
Kakuro
Kakuro puzzles
Killer Sudoku
Killer Sudoku puzzles
Masyu
Masyu puzzles
Numberlink
Numberlink puzzles
Nurikabe
Nurikabe puzzles
PivotPix
PivotPix puzzles
Rectangles
Rectangles puzzles
Samurai Sudoku
Samurai Sudoku puzzles
Skyscraper
Skyscraper puzzles
Slitherlink
Slitherlink puzzles
Star Battle
Star Battle puzzles
Sudoku
Sudoku puzzles
Tapa
Tapa puzzles
Yajilin
Yajilin puzzles


All site contents ©Any Puzzle Media Ltd and ©Dr Gareth Moore 2005-2017 - email info@anypuzzle.com - Registered in England & Wales No. 8323185