قانون داو ۸-۹-۱۲ - واژه‌نامه‌ی تخته نرد

8-9-12 Doubling Rule

1. A guideline for cube handling in pure race positions. You should double if the opponent's pip count exceeds yours by 8% or more, and redouble if it exceeds yours by 9% or more. Your opponent should accept the double if his pip count exceeds yours by no more than 12%.