This is Tic-Tac-Toe using negamax for AI. Help me make it better!Some sore points are:def get_mark    good_mark = false    until good_mark      mark = gets.chomp      if mark =~ /x/i        chose_x        good_mark = true      elsif mark =~ /o/i        chose_y        good_mark = true      else        puts <<-EOS.gsub(/^ */, '')        What is this strange mark? please choose 'X' or 'O'!        EOS      end    end  endanddef game_won?  @solutions.clear  make_solutions  won = false  @solutions.each do |solution|    if solution[0] != ' ' &&      solution[0] == solution[1] && solution[1] == solution[2]    won = true    end  end  return wonendThe rest of this is here.
Ruby Tic-Tac-Toe using classes
beginner;ruby;game;tic tac toe;ai