Project Euler , Problem 55

class P55
  def main
    (1..9999).select { |i| i.lychrel? }.size
  end
end

class Integer
  def reverse
    self.to_s.reverse.to_i
  end

  def palindrome?
    self == self.reverse
  end

  def lychrel?
    _self = self

    (1..50).all? do |i|
      !(_self += _self.reverse).palindrome?
    end
  end
end