Daily sudoku puzzle
One board, the whole world, one day. The difficulty follows the calendar.
Leaderboard
Keyboard
- Arrows or WASD — move
- 1–9 — enter a digit
- Del or Backspace — erase
- Space or N — pencil marks
- Z — undo, Shift+Z or Y — redo
- H — conflict highlighting on/off
- A wrong digit costs a life — you get 3 mistakes per game