def ambiguous_score
      unq_scores = scores.values.uniq
      scores[:ambiguous] = 1 if unq_scores.length == 1 && unq_scores.first.zero?
    end
def ambiguous_score
      unq_scores = scores.values.uniq
      scores[:ambiguous] = 1 if unq_scores.length == 1 && unq_scores.first.zero?
    end
Last part of the scoring process
 If all scores are empty ambiguous is scored as 1