Hitori
Shade the repeated numbers until every row and column is unique.
📖 Hitori Guide: History, Rules & Free 50-Level PDF Booklet →
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How to play
- Shade some cells so that no number appears twice among the unshaded cells of any row or column.
- Shaded cells never share a side (they may touch at a corner).
- All the unshaded cells stay connected in one piece, through shared sides.
- Shade only repeated numbers: a shaded number also appears unshaded in its row or column.
- Tap once to shade a cell, again to circle a cell you know stays white.
No Repeats Among the White Cells
Shade cells until no number appears twice among the unshaded cells of a row or column. Shade only repeated numbers.
Shaded Apart, White Together
Shaded cells never share a side, and all the white cells stay joined in one piece. Circle a cell when you know it stays white.
📖 Read full history, math concepts & download printable booklet →
Hitori
How to play Hitori
- Shade some cells so that no number appears twice among the unshaded cells of any row or column.
- Shaded cells never share a side (they may touch at a corner).
- All the unshaded cells stay connected in one piece, through shared sides.
- Shade only repeated numbers: a shaded number also appears unshaded in its row or column.
- Tap once to shade a cell, again to circle a cell you know stays white.
No Repeats Among the White Cells
Shade cells until no number appears twice among the unshaded cells of a row or column. Shade only repeated numbers.
Shaded Apart, White Together
Shaded cells never share a side, and all the white cells stay joined in one piece. Circle a cell when you know it stays white.
There is exactly one solution. Check marks anything that breaks a rule. Sign in to get 3 hints per puzzle: each fills in one correct move. Your moves are saved in this browser, so you can leave and come back.