It's free! It's funny! It's logic!

It is a simple Exe file to copy on your Pocket PC / PC, with 19 levels but you can also create your own levels or use it to solve the problems you find on the net!

Rules:
Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9.

Update Description:
v1.3:
- Some puzzles couldn't be solved.

v1.2:
- New "interactiv" mode.
- "New game" corection.

v1.1:
- Algorithm bug (for some puzzles it didn't work).