I just finished a game where I had borne off 9 checkers and my opponent had borne off none. He "left the game" with one checker still in my home board. The game had been doubled, but I only received 2 points, not 6 (for a backgammon) or at least 4 (for a gammon). Does anyone why this occurs? Is there some magic way to quit without losing a gammon/backgammon?