Classic
Timed, mistakes count, four difficulty levels.
The digits must stay single
Fill the 9×9 grid with the digits 1 to 9: every row, column and box holds each digit once.
Timed, mistakes count, four difficulty levels.
A new puzzle every day; solve daily to grow your streak.
No timer, no pressure; play at your own pace.
Notes, erase and undo, plus three hints per game. Large text option.