Rules

• 10 frames
  • 1 or 2 shots for each frame
  • score = the number of pins from the 1st and 2nd shots
  • Spare: is awarded when no pins are left standing after the second ball of a frame; i.e., a player uses both balls of a frame to clear all ten pins. A player achieving a spare is awarded ten points, plus a bonus of whatever is scored with the next ball (only the first ball is counted). It is typically rendered as a slash on score sheets in place of the second pin count for a frame.
    • 5
    • 5 // spare
    • 7 // (10 + 7) + 7
  • Strike: when all ten pins are completely knocked down with the first ball (called a strike and typically rendered as an "X" on a score sheet), a player is awarded ten points, plus a bonus of whatever is scored with the next two balls. In this way, the points scored for the two balls after the strike are counted twice.
  • 10
  • 2
  • 4 // 22
• compute final score for the 10 frames

Usage

composer install
./vendor/bin/phpspec run