Bowling

Bowling

Rules:
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- 10 Pins in total
- 10 Frames
- 1 Frame contains 2 rolls
- Open Frame - When not all pins have been knocked down during the 2 rolls in a frame
- Spare - All pins have been knocked down in both rolls for a frame
- Strike - All pins have been knocked down in a single roll for a grame
- Extra Roll - Extra Roll if you hit a spare during your last Frame
- Extra Frame - Extra Frame if you hit a strike during your last Frame

Scoring:
- Open Frames - Score: the number of pins knocked down (Max: 9)
- Spare - Score: 10 + the number of pins knocked down in the next roll 
  MAX: 20 -> current_frame(SPARE) + next_roll(STRIKE) (10 + 10)
  MIN: 10 -> current_frame(SPARE) + next_roll(NONE) (10 + 0)
- Strike - Score: 10 + the number of pins knocked down in the next two rolls
  MAX: 30 -> current_frame(SPARE) + next_roll(STRIKE) + next_roll(STRIKE) (10 + 10 + 10)
  MIN: 10 -> current_frame(SPARE) + next_roll(NONE) + next_roll(NONE) (10 + 0 + 0)