Droid Sudoku

A classic Sudoku game with 9x9 grid. Sudoku is a logic based number-placement puzzle. The objective is to fill the 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid contains all of the digits from 1 to 9. Droid Sudoku is developed with ease of use and with features like undo last moves and save state of the game. You can solve problems of 5 difficulty setting and try to beat your best time for each setting.