Sudoku with hints & solutions

Sudoku (also called Number Place) 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:
● 4 difficulty levels
● Many levels in each grade
● Auto-fill,and also you can shut this feature
● Check errors
● Clear notes
● Auto-save

Please enjoy and let us know if you have any questions.