Singles

Game Rules: Black out some of the squares, in such a way that: no number appears twice in any row or column; no two black squares are adjacent; the white squares form a single connected group (connections along diagonals do not count). Click in a square to black it out, and again to uncover it.

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Game Controls

Game Information

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Shortcuts: Ctrl+S(Save) | Ctrl+O(Load)

Game Rules: Singles

Free online Singles puzzle - eliminate duplicate numbers while maintaining connectivity. Exercise logical reasoning and constraint satisfaction abilities. Perfect for number logic challenge lovers.

Also known as: Hitori

Why play this puzzle

Singles focuses on removing duplicate numbers while keeping the grid connected, often searched as Hitori. It works well as a quick logic exercise, but also has enough depth for longer solving sessions with fresh generated boards.

The best way to solve this Logic Reasoning puzzle is to lean on elimination reasoning: confirm forced moves first, reduce the remaining possibilities, and let the full solution emerge step by step.

Black out some of the squares, in such a way that: no number appears twice in any row or column; no two black squares are adjacent; the white squares form a single connected group (connections along diagonals do not count). Click in a square to black it out, and again to uncover it.