sudoku

How to play:

1. Select using mouse desired level
2. Press G to generate new sudoku
3. Select particular cell with cursos or using arrows
4. Provide number. In order to delete number press 'delete'
5. In order to check sudoku press 'c' -> after pressing this button you can only solve sudoku
6. In order to solve sudoku press 's' -> this is end of the game
7. In order to reset board press 'g' without selecting any level