code: def set_attr(input)
        @name = input[:name] if input[:name]
        @guesses = input[:guesses] if input[:guesses]
        @time_taken = input[:time_taken] if input[:time_taken]
        @date_played = input[:date_played] if input[:date_played]
      end
docs: attr_accessor :name, :trials, :time_taken, :date_played