Sudoku

01Fill the grid so every row, column and 3×3 box holds the digits 1 to 9 once each.
02Select a cell, then tap a number. Turn on Notes to pencil in candidates.

Start a station first. It keeps playing while you play. Popular stations →

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Keyboard: 1–9 to fill, arrows to move, Backspace to erase, N for notes.

Play free Sudoku online, with unlimited puzzles in easy, medium and hard. Every puzzle has exactly one solution, plus pencil marks, hints and undo, and your radio station keeps streaming while you play.