Pocket Sudoku

Current version: 1.0 (September 10, 2008) Pocket Sudoku is the definite sudoku application for Pocket PC (Windows Mobile). It can currently generate sudoku puzzles using six different difficuties, solve any valid puzzle, display automatic and manual pencil marks, give you hints when you get stuck, and much more. Of course, it comes free of charge and its source code is completely open!