RULES:
* Targets score 10 times indicated value when selecting number, otherwise 10 points.
* When the "right target bumber selected" is larger than the "left target selected", 1 ball is added. Either number can be made first.
* Selected numbers reset when both numbers are selected or "left target number selected" is 15.
* Scoring 2000 points adds 1 ball.
* Scoring 3000 points adds 1 ball.