[Bug-gnubg] Largest swing yet between 0-ply & 2-ply

[Ian Shaw]

This is the first time I've seen a swing of over 0.5 between 0-ply & 2-ply. I 
thought you, particularly Joseph, would be interested. It's even larger on a 
centred cube, at 0.547.

--Ian

    GNU Backgammon  Position ID: M7sCDgLbZgcAQg
                    Match ID   : UQlmASAACAAA
    +24-23-22-21-20-19------18-17-16-15-14-13-+  O: White
    | O     O  X  O  O |   | O  O             |  2 points
    | O     O     O  O |   |                  |  
    |                O |   |                  |  
    |                  |   |                  |  
    |                  |   |                  |  
    |                  |BAR|                  |v 11 point match
    |                  |   |                  |  
    |                  |   |                  |  
    |                  |   | X        O       |  
    | X  X  X  X     X |   | X        O       |  Rolled 41
    | X  X  X  X  O  X | X | X        O       |  1 point
    +-1--2--3--4--5--6-------7--8--9-10-11-12-+  X: Blue (Cube: 2)

    1. Cubeful 0-ply    bar/21 6/5*                  Eq.:  +0.479
       0.546 0.306 0.007 - 0.454 0.167 0.006
        0-ply cubeful [expert]
    2. Cubeful 0-ply    bar/21 7/6                   Eq.:  +0.253 ( -0.227)
       0.495 0.140 0.001 - 0.505 0.067 0.001
        0-ply cubeful [expert]

    1. Cubeful 2-ply    bar/21 7/6                   Eq.:  +0.669
       0.623 0.178 0.001 - 0.377 0.077 0.003
        2-ply cubeful 100% speed [world class]
    2. Cubeful 2-ply    bar/21 6/5*                  Eq.:  +0.381 ( -0.287)
       0.530 0.307 0.009 - 0.470 0.150 0.004
        2-ply cubeful 100% speed [world class]