def board_visualization
    string = ""
    board_as_array.each do |row|
      string += row.join("")
      string += "\n"
    end
    string
  end


  def pretty_board(board)
  pretty_string = ""
  board1 = board.dup
  board1.each do |row|
    row.each do |item|
      if item.class == Array
        item = "-"
      end
      pretty_string += item + " "
    end
    pretty_string += "\n"
  end
  pretty_string
end