Sudoku

Sudoku is a logic-based, combinatorial number-placement puzzle. 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

- auto pencil mark

- hint system

- auto-save your progress for each puzzle

- unlimited undo/redo

- selected cell highlight

- number highlight (optional)

- errors highlight (optional)

- direction highlight (optional)

- input highlight (optional)

- timer (optional)

- clean interface and smooth controls

- phones and tablets support

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