Sudoku Master is ...

Open source representation of the currently very popular puzzle game Sudoku. Intends to provide an advanced user interface, that is both easy to use and appealing to the eye. With Sudoku Master you can create random sudoku grids or design your own to play/solve, and it can be used as a sudoku generator and solver.

Features

• Random puzzles every time you play 
• Helping lines mode in the option menu, so You can see easier, if there is a collision 
• 4 difficulty levels
• Load/Save Sudoku games without any kind of losses 
• Design your own puzzles 
• Print puzzles on paper

Free Download

https://sourceforge.net/projects/sudokumaster

a java version can be found at

https://sourceforge.net/projects/javasudoku