Rules of Nurikabe puzzle

Sample problems Rules How to play

Rules of Nurikabe (Flash)

Rules of Nurikabe (Text)

  1. Create white areas surrounded by black walls.
  2. Each white area contains only one number.
  3. The number of cells in a white area is equal to the number in it.
  4. The white areas are separated from each other with a black wall.
  5. Cells containing number must not be filled in.
  6. The black cells must be linked into a continuous wall.
  7. Black cells cannot form a square 2x2 or larger.