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.