🔢 Sudoku

Every row, column and 3×3 box must contain the digits 1 to 9 once. Tap a cell, then a number. Notes mode lets you write small candidates.

Play free sudoku in your browser. New puzzles with a single solution, notes, hints and undo. Works on phones and offline.

Scores and settings are saved only in this browser (local storage). Nothing is sent to a server.

After a game has loaded once, it also works without internet.