Android app - Sudoku Returns

Sudoku Returns game with infinite puzzles. Every time you get a new game with different mode of difficulties.
Features
-Infinite Sudoku Puzzles
-Ease of access
-3 Mode of difficulties (Easy,Medium,Hard)
-Undo/Redo and Erase
-Multiple Game Resume
-Score Summary
-Smart Hints
-Puzzle Solution
-Highlighting of digits and/or pencil marks
-Highlighting of completed digits
-Highlighting of incorrect digits
-Supports portrait and landspace mode.

Download link
http://www.appbrain.com/app/sudoku-returns/com.bt.my.sudoku