Janowski's Formulas - Backgammon Dictionary

Janowski's Formulas

1. A collection of formulas devised by Rick Janowski for estimating cubeful equity from cubeless equity. The basic formula for cubeful equity (between take points) is:

   CF = CL\*(1 - x) + CE\*x
   

   where CF is cubeful equity, CL is cubeless equity, CE is cubeful equity assuming all doubles are perfectly efficient, and x is a number between 0 and 1 that measures the cube efficiency. Typical values for x range from 0.55 to 0.8.   See also: Janowski's Takepoint Formula.