public boolean setGridLine(Combination<Colors> attempt, AnswerCombination answer) {
    if (this.additionalAttemptPossible) {
      this.grid.add(new Row(attempt, answer)); 
      
      if (this.grid.size() == Board.SIZE) {
        additionalAttemptPossible = false;
      }
      else {
        this.additionalAttemptPossible = true;
      }
      
    }
    
    return this.additionalAttemptPossible;
  }