Sudoku Playtime

With Sudoku Playtime you can play virtually endless Classic Sudoku puzzles! You can also create, test and solve your own puzzles! You can also try to recognize a puzzle from an image! Main features: 7 difficulty levels: from Beginner to Expert, plus a Custom level. Playable on smartphones or tablets, in portrait or landscape orientation. Two insert modes (select cell first or select number first). Manual or automatic pencil marks. Detection of candidates, naked singles and hidden singles. Error highlighting. Autosave and checkpoints. Restart a puzzle from the beginning or from a checkpoint. Resume playing with a previously saved puzzle. Undo / Redo functions.