| ⇢ | A | BowlingGame added | |
| ⇢ | A | RollValue added |
| ⇢ | C | BowlingGame::calculateFullRollScore() added | |
| ⇢ | B | BowlingGame::checkRolls() added | |
| ⇢ | A | BowlingGame::__invoke() added | |
| ⇢ | A | RollValue::fromChar() added | |
| ⇢ | A | BowlingGame::calculateSimpleRollScore() added | |
| ⇢ | A | RollValue::value() added | |
| ⇢ | A | BowlingGame::calculateTotalScore() added | |
| ⇢ | A | BowlingGame::isSecondTryInFrame() added | |
| ⇢ | A | RollValue::__construct() added |