Sudoku

Sudoku is the most popular logic-based numbers game. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 sub-grids that compose the grid contains all of the digits from 1 to 9. 

FEATURES:

- Different difficulties

- Hundreds of puzzles for each difficulty

- Night mode

- Pencil mark (draft)

- Hint system

- Auto-save your progress for each puzzle

- Support multiple input methods

- Unlimited undo

- Selected cell highlight

- Errors highlight

- Direction highlight

- Timer