⌨️ Keys: numbers · arrows · Backspace · N notes · H hint · U undo · P pause
Sudoku
Every number, once!
Fill the empty squares so every row, column and thick-lined box has each number just once. Tap a square, then tap a number. ✏️ Notes = tiny guesses. 💡 Hints fill a square. Red means oops. Just try again! Hints and oops add a little time.
Pick a size
Pick a level
Paused
Take a break
The clock is stopped. Remember: each row, column and thick box needs every number once. Tap ✏️ Notes to jot small guesses; red numbers are mistakes you can fix.