Puzzles

Hitori: Weed Out.

Weed out repeated numbers until every row and column is unique, keeping the bed in one piece.

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Enable JavaScript to play. Your game saves stay in this browser.How to playTap a square to cycle shaded, kept and open; a kept ring marks a square you are sure stays. Keyboard: arrow keys move, Space or Enter shades, X or O keeps, Backspace clears.

No number repeats in a row or column among the open squares.

Shaded squares never touch along a side; touching at a corner is fine.

All open squares join into one area through their sides.

Shade only to remove a repeat: each shaded number still appears, open, in its row or column. Breaking squares are marked.

Each grid has exactly one solution. Hint fixes a wrong mark or shades the next square that must go.

Daily plots give everyone the same grid at each size on a UTC day.

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Goal. Shade squares so no number repeats in any row or column, shaded squares never share a side, and all open squares stay connected.

Weeding

Among the open squares, every row and every column holds each number at most once.
Shaded squares never touch along a side, and the open squares join into one area.
Shade only to remove a repeat: each shaded number still appears, open, in its row or column.
Tap a square to cycle shaded, kept and open. A kept ring marks a square you know stays.

Between two twins. One of the two 2s must be shaded. If the ringed 5 between them were shaded, neither 2 could be, because shaded squares cannot touch, so the 5 stays open.