Sudoku Up

Sudoku up originally called Number Place, is a logic-based, combinatorial number-placement puzzle. 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 (also called "boxes", "blocks", "regions", or "sub-squares") contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which typically has a unique solution. Sudoku Up is a high-quality collection of Sudoku Puzzles. Sudoku Up Solitaire includes millions of different puzzles to keep you entertained for years to come... If you like Sudoku puzzles, then you'll love Sudoku Up!