Instructions
To fill the cells it is needed fill the cells with numbers from 1 to 9. If a cell is empty you must type 0 or space. When the puzzle was complete to be solved, click in the Run button.
To move to other cells in the puzzle, you can use the directional keys. 0 or space will clean a previously filled cell. Backspace also will clean a filled cell and move to the previous cell.
While it is solving the puzzle, you can stop clicking in the Stop button. You can restart the solving clicking in Run or cleaning clicking in Clean. You can regulate the individual cell solving time, you change the Step Time.
For more technical details go to the Project GtHub page.