[Bug-gnubg] More gammons than wins?

[joachim . matussek]

Hello,

i just did a rollout with a surprising result. More gammons than wins occur here.

Newest windows version 1.1645 (Sept 6th, 2004)  

    GNU Backgammon  Position ID: zLbBAWDb7AMAIg

                    Match ID   : cAlgAAAACAAA

    +24-23-22-21-20-19------18-17-16-15-14-13-+  O: Player 0

    | X     O  X  O  O | O | O  O             |  0 points

    |       O     O  O | O | O  O             | 

    |                  |   |                  | 

    |                  |   |                  | 

    |                  |   |                  | 

    |                  |BAR|                  |v 3 point match (Cube: 1)

    |                X |   |                  | 

    |                X |   |                  | 

    |                X |   |                O | 

    | X  X  X     X  X |   |                O |  On roll

    | X  X  X     X  X |   |                O |  1 point

    +-1--2--3--4--5--6-------7--8--9-10-11-12-+  X: Player 1

Cube analysis

Rollout cubeless equity  +1.0881 (Money:  +0.6556)

Cubeful equities:

1. No double            +0.7877

2. Double, pass         +1.0000  ( +0.2123)

3. Double, take         -0.0727  ( -0.8604)

Proper cube action: No double, take (80.2%)

Rollout details:

Centered 1-cube:

  0.6436 0.5092 0.0046 - 0.3564 0.0535 0.0919 CL  +1.0881 CF  +0.7877

[0.0279 0.0281 0.0015 - 0.0279 0.0192 0.0816 CL   0.1173 CF   0.1174]

Player Nanome owns 2-cube:

  0.6185 0.7296 0.0044 - 0.3815 0.0849 0.0102 CL  +0.9044 CF  -0.0727      <-------

[0.0258 0.1872 0.0013 - 0.0258 0.0219 0.0063 CL   0.1465 CF   0.2016]

Full cubeful rollout with var.redn.

8 games, Mersenne Twister dice gen. with seed 943883169 and quasi-random dice

Play: 0-ply cubeful [expert]

Cube: 0-ply cubeful [expert]

Thx in advance,

Joachim Matussek