About Nurikabe

Nurikabe is a puzzle type developed by Nikoli.

Your task is to create a ocean of shaded cells with islands of unshaded cells inside it which satisfy the following:

  • Each island has exactly one number on it, and the number indicates the size of the island, i.e. the number of cells in it.
  • No two islands maybe orthogonally adjacent.
  • The ocean is only one ocean, so all the shaded cells must be connected.
  • No 2×2 square of cells is completely shaded.

The solution is unique.

To further clarify the rules, here’s an example Nurikabe along with its solution.

2 thoughts on “About Nurikabe

  1. Pingback: Puzzle #3: Nurikabe | PuzzleMine

  2. Pingback: Puzzle #13: Nurikabe | PuzzleMine

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