501 Sudoku Master 4.6.6.7
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ABOUT 501 Sudoku Master
501 free Sudoku Puzzles for Android! A must have in your smartphone. 4 levels of difficult. Several input modes Save checkpoints to avoid wrong number lock. Play hundreds of hours. Global leaderboards!! You won’t be looking for a paper puzzle ever again! With 4 difficulty levels, intuitive interface, and all the functions right at your fingertips, this Sudoku app is sure to be your favorite. Interrupted? Exit Sudoku, and the puzzle is saved exactly as you see it! * 4 levels - easy, medium, hard, extreme * 3 input modes - digit first, cell first, popup * Pencil marks with auto fill / erase, as specified in settings * Auto-save * Undo and Redo * Intelligent hints * Selected digit highlighting, as specified in settings * Incorrect entry highlighting, as specified in settings Supports: trackball, touch screen, keyboard. Common misspellings are: suduku, sudoko, soduko, sodoku.