private void button3_Click(object sender, RoutedEventArgs e)
 {
     Removed = 0;
     Solved = 0;
     myboard = new Board();
     try
     {
         Generate(myboard);
     }
     catch (System.ArgumentException ex)
     {
         try
         {
             RemoveSpaces(myboard);
         }
         catch (System.ArgumentException ex2)
         {
             myboard.IntToString();
             MyBoard.ItemsSource = myboard.StringSpace;
         }
     }
 }