Sudoku Free-Classic Sudoku Puzzles

Sudoku Free - puzzle games. A free and offline Sudoku app. The aim of the game is to place 1 to 9 into each grid cell so that each number can only appear once in each row, each column, and each mini-grid. More features: - 4 levels: easy, medium, difficult, and expert，ranging from “Easy” to “Master”. - Input modes: cell first and digit first - without toggling - Pencil marks (with automatic removal) - Works offline - Digit highlighting - Count of remaining digits - Automatic saving - Undo - Board validation - Optional aids - Edge to edge board - Satisfying animations