Sudoku Solver Game - Advanced

With this app it is easier than ever to play Sudoku games or solve ones you found elsewhere.
- Hundreds of really hard games classified into five difficulty levels.
- Enter own game and solve or play it with visual hints
- Stylish graphics
- Drag and drop cell to cell
- Drag and drop button to cell
- Unlimited logical visual hints
- Pencil marks (notes) with auto-fill and auto-clear option
- Three modes of editing
- Multi-level Undo and Redo
- Highlighting selected row, column, box, digits, and even pencil marks