Used Sudoku World for Windows?
Developer’s Description
By SudokuWorld
Sudoku World lets you play Sudoku on your desktop. It contains over 100,000 puzzles built in and has the following functions: Easy/Medium/Hard puzzles; Hint feature; Pencil marks; Easy keyboard navigation; Portable USB stick friendly; Only 3MB. Version 1 update adds more new puzzles and updates for graphical renderings.
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