class Board:

    def __init__(self, secret_code):
        self.secret_code = secret_code

    def evaluate_guess(self, guess):
        if guess == self.secret_code:
            return 'Winner!'
        index = range(0, len(guess))
        result = ['black' for x in index if self.secret_code[x] == guess[x]]
        count = 0
        for g in guess:
            if g in self.secret_code and guess[count] != self.secret_code[count]:
                result.append('white')
            count += 1
        return result