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For Reference, Win % w/Perfect Spare Distribution

Posted By: Stick
Date: Tuesday, 28 April 2009, at 6:10 a.m.

I am only going to post the 1 original diagram and then provide the stats and how they change provided the given deviation from the original position. You should be at least vaguely familiar if not intimately so with most of these numbers already.

Player 052


5X5X4X ' ' ' ' ' ' ' ' '

2O2O2O3O3O2O ' ' '1O ' '

Player 161

Position ID: 3/cAAEDb7oYAAA Match ID: QYkMAAAAAAAA

What this post is concerned with is the win percent of the person owning the perfect distribution ready to begin his bearoff assuming his opponent has "X" men off, his opponent has broken down to a blotless 3 point board or less, and his opponent holds the cube in a money game situation.

As seen in the diagram above, the bottom player (Blue) will win ~97.5% of the time and yield ~3.5% gammons. The following list is the approximate win percentage rounded to the nearest half percent of Blue with White having X checkers off.

  • 1 off = 96%
  • 2 off = 93.5%
  • 3 off = 90%
  • 4 off = 85%
  • 5 off = 78%
  • 6 off = 70%
  • 7 off = 61%
  • 8 off = 50.5%
  • 9 off = 42%
  • 10 off = 32%
  • 11 off = 24%
  • 12 off = 0%, immediate D/P

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