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Nurikabe #839

#839 · MediumArchive: not ranked
How to play
  • Every number sits in an island: a group of unshaded squares joined across or down, with exactly as many squares as the number. Each island holds one number, and no unshaded square is left outside an island.
  • All the shaded squares form one wall, joined across or down, and the wall never fills a 2 × 2 block.
  • Tap a square to shade it, again for a dot (a note for a square you know is island), and once more to clear it. Drag across squares to paint; a long press or a right click places a dot. Dot first in the options swaps the order.
  • Easy grids are 7 × 7, medium 8 × 8 and hard 10 × 10. Every grid has one answer, found by logic alone. Fastest time wins; fewer changes break ties.

Nurikabe #839 is the puzzle from Monday, October 19, 2026 (medium). Archive puzzles count toward your statistics, not your streak or the leaderboard.

Archive games count toward your statistics, not your streak or the leaderboards.

About Nurikabe #839

Nurikabe #839 was the puzzle for Monday, October 19, 2026, a medium one: 11 islands in an 8 × 8 grid. Everyone who played Nurikabe that day got the same puzzle, and it stays here to play for 60 days.

New to Nurikabe? The rules, tips and common questions are on the Nurikabe page, and How to Solve Nurikabe Puzzles goes into strategy.

Other days of Nurikabe

Every day of the last 60 is in the puzzle archive.

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