[Bug-gnubg] Bug?

[Bigcitydealer]

Hi
How can the cubeless equity of this position be 0.211
And the cubeful equities be 0.896/1.182 Double/Pass?

Thanks


GNU World Class (O, 0 pts) vs. Midas (X, 0 pts) (money game)

Game number 1

Move number -1: X on roll, cube decision?

    GNU Backgammon  Position ID: tC0AwDvcvRsAAA
                    Match ID   : cAkAAAAAAAAA
    +24-23-22-21-20-19------18-17-16-15-14-13-+  O: GNU World Class
    |       O  O  O  O |   | O                |  0 points
    |          O  O  O |   |                  |  
    |                  |   |                  |  
    |                  |   |                  |  
    |                  |   |                  |  
    |                  |BAR|                  |v (Cube: 1)
    |                  |   |                  |  
    |    O        X    |   |                  |  
    | O  O  X  X  X  X |   |                  |  
    | O  O  X  X  X  X |   | X                |  On roll
    | O  O  X  X  X  X |   | X                |  0 points
    +-1--2--3--4--5--6-------7--8--9-10-11-12-+  X: Midas

Output generated Thu Oct 17 15:55:31 2002
by GNU Backgammon 0.12 (Text Export version 1.19)

Cube analysis
2-ply cubeless equity  +0.211
  0.606 0.382 0.142 - 0.394 0.010 0.000
1. Double, pass         +1.000
2. Double, take         +1.182  ( +0.182)
3. No double            +0.896  ( -0.104)
Proper cube action: Double, pass