New Ideas in Backgammon by Kit Woolsey – Another top notch book by Woolsey if you ask me. (which you did, since you clicked on the link) Beyond the grasp of a beginner or even low level intermediate, you should have a couple books under your belt and some solid table time before jumping into this book to get the most out of it. I’ve spoken to a couple of “backgammon newbies” and they were lost in the terminology alone, but don’t let this disuade you if you are a decent player, it’s a great read! The results are backed up not only by fellow world class players talking about and explaining the position, but by the modern day bot analysis of course.