# Nurikabe

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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

# Become a Patron

We are on a mission to make this website the largest collection of free, playable puzzles on the web. We are constantly adding new puzzle types, features, and improvements.

It is so exciting that you are interested in joining our community of puzzle-loving patrons! As a patron you will get some goodies in return (applies for all games):

• The ads will disappear. The site will load faster as a result.
• You will be able to go back 30 daily, 10 weekly and 5 monthly special puzzles.
• A tempting "Give Up" button will appear, which will test your resistance, and eventually show the puzzle solution if you happen to click on it.
• Some personal statistics and charts (under construction)

Minimum contribution: Monthly: \$1; Annual: \$10

2024-09-10 01:17:20

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