Shade logic puzzle

Alone: free shade logic puzzle online

Shade cells so the remaining numbers are unique in every row and column. Shaded cells cannot share an edge, and all unshaded cells must stay connected by sides.

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No account needed. For today's shared board, open the Daily Challenge.

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When three matching numbers sit next to each other in a row or column, keep the middle one unshaded and shade the outer two. Shading the middle would leave a repeated pair.

RulesLearn which numbers stay, why shaded cells cannot share an edge, and how clear cells connect. StrategyUse duplicate pairs, shaded neighbors, and connections between unshaded cells.

How a turn works

Click a cell to cycle unshaded, shaded, and note states as you eliminate repeats. Watch neighbors so shaded cells never share an edge.

Difficulty

We aim for each board to fit one sitting. Easy is shorter. Hard takes longer. If you want more, start another puzzle.

EasySmaller grid with several duplicate pairs.

StandardMore duplicates meet across rows and columns.

HardMore cells depend on keeping the clear area connected.