How to play
Fill every row, column, and 3x3 box with the numbers 1 through 9. Given cells cannot be changed.
Playable Brain Games
Sudoku
Play a clean browser Sudoku puzzle with difficulty levels, notes, hints, undo, saved progress, and local stats. Everything runs in your browser.
Playable now Local save No account needed
Saved puzzle restored from this browser.
Easy 00:00
Use notes
Toggle notes when you want to pencil in candidates. Number buttons add or remove notes instead of placing a value.
Static and private
Puzzles, progress, and stats stay in localStorage on this device. Calcly does not need an account to save your game.
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