Score rules 1. Basic scoring (no strike or spare): - just add the attempts pin number

    2. Strike (first attempt, all ten pins)
        - A strike in tenth frame gives the bowler two extra ball roll attempts
        - place X in the current frame
        - roll next two balls
        - current frame score = score previous frames + 10 (for the strike) + sum of next two attempts

    3. Spare (second attempt, all ten pins)
        - A spare in the tenth frame gives the bowler one extra ball roll.
        - Mark a '/' for the frame
        - Score is knocked 10 pins
        - Plus add what get knocked on the next ball roll

        - current frame score = previous frame score + ten from current frame + next ball attempt score

    5.  If a bowler should get a strike or a spare in the 10th frame,
        the bowlers scoring continues as the bowler throws their bonus shots.

    6.  The bowler who throws a strike in the tenth frame must roll two additional balls to complete the
        score for the tenth frame.

    7.  The bowler who throws a spare in the tenth frame must roll one additional ball to complete the
        score for the tenth frame.

    8.  A perfect game with score "300" pins, you roll ten strikes, once for each frame,
        and then two bonus shots at the end are also strikes.