With the Sudoku app you can play the famous logic puzzle, free and in English. Characteristics • 4 levels of difficulty: easy, normal, difficult and expert • Ability to take notes • Ability to enable automatic verification • Numeric keys are grayed out if a number is used 9 times • Highlight the selected row, column, and block • Highlight all fields that have the same value More features: • Automatic backup and loading of Sudoku • Fully playable offline • Optimized for smartphones and tablet