Sudoku Ultimate PRO(No Ads)- Offline sudoku puzzle

Offline classic style Sudoku is a logic-based, combinatorial number-placement puzzle game. The objective is to fill a 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. The sudoku logic puzzle is completely free and no advertisement is used.