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kawu

Nurikabe

Build one black wall around numbered islands: each island as big as its number, never a 2×2 of wall.

中文
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How to play

  1. Numbered squares are white and belong to islands; a number is the size of its island.
  2. Every island holds exactly one number, and every white square belongs to an island.
  3. All black squares connect into one wall along sides.
  4. The wall never contains a 2×2 block of black squares.
  5. Tap a square to cycle black, dot (white), blank. Every puzzle has one answer.