private void btnNew_Click(object sender, RoutedEventArgs e)
        {
            //restartTheGame();
            sudoku = new SudokuGame();

            sudoku.LOADED = true;

            FillTheTable();

            RemoveDigits();

            ShowOnTheBoard();
        }
 public MainWindow()
 {
     InitializeComponent();
     sudoku = new SudokuGame();
 }