SudoClue HD

Sudo Clue! Everybody loves Sudoku! Give your brain a workout and keep your mind sharp. 4000 puzzles included! And the best part, it is absolutely free!! Here is a full list of reasons why this the best Sudoku app out there: * 4000 puzzles included (1000 per difficulty)* Save the puzzle you are working on so you do not lose your progress* Undo and Redo functionality built in* Use the built-in puzzle solver to give you clues and to show you the solution to any valid puzzle!