"Build a simple guessing game"

gistfile1.txt

class GuessingGame
  def initialize(answer)
    @answer = answer
  end
 
  def guess(guess)
    @guess = guess
    result = nil
 
    case guess
      when guess == @answer
        result = :correct
      when guess > @answer
        result = :high
      when guess < @answer
        result = :low
      end
      result
    end
 
  def solved?
    if @guess == @answer
      true
    else
      false
    end
  end
end

My guess is a syntax error. Look through this