Post_14.4.rb

def moves_left(cells)

    move = []

    cells.each do |k,v|
      move << k if cells[k] != "X" && cells[k] != "O"
    end
    move
  end

  def possible_moves(cells)
    to_win = win_move(cells)
    block = to_block?(cells)
    random = moves_left(cells)

    to_win.map!(&:to_s)

    if to_win.empty?
      return random
    elsif to_win.include? "5"
      return "5"
    elsif block
      return block
    else to_win
      return to_win
    end
  end

  def comp_move(move)
    return move[-1]
  end