The most complete glossary of backgammon terms
Backgammon played using a doubling cube without any limit to the number of doubles and redoubles. Unlimited games are similar to money games, but are played without the Jacoby rule, beavers, or automatic doubles. In contrast, limited forms of backgammon include: match play and table stakes.
A guideline for cube handling in pure race positions. If you add 10% to your pip count, you should double if the result is not more than two pips greater than the opponent's count, and you should redouble if the result is not more than one pip greater. Your opponent should accept the double if your count plus 10% is no more than two pips less than his count.