Cube Analysis has win breakdown reversed

[Ian Shaw]

On the GUI cube decision window, the win breakdown has the player on roll wining 58.3% (36.8% gammons).

 

Yet when I use the Copy to get the text window, the results are the opposite way round.

 

I get the same result when starting a match from the beginning or pasting in an XG id.

 

Chequer play breakdowns are correct in the Copy window.

 

As an aside, it would be good if the Copy button automatically put the contents of the window into the paste buffer. This would save us having to Select All and Copy each time.

 

 

GNU Backgammon 1.08.001-mingw 32-Bit 20240204

 

 

XGID=-CCBbaa-----c--a-c-d-----A:0:0:1:00:0:0:0:5:10

 

4DlxoAZ3AwAAAQ:cAmmAAAAAAAE

 

 

Cube analysis

2-ply cubeless equity -0.592 (Money: -0.556)

  0.417 0.000 0.000 - 0.583 0.368 0.022

Cubeful equities:

1. Double, take        -0.717

2. Double, pass        -1.000  (-0.283)

3. No double           -0.690  (+0.027)

Proper cube action: Double, take

 

Cube analysis

Rollout cubeless equity -0.526 (Money: -0.498)

 

Cubeful equities:

1. Double, take        -0.564

2. Double, pass        -1.000  (-0.436)

3. No double           -0.534  (+0.030)

Proper cube action: Double, take

 

Rollout details:

Centered 1-cube:

  0.440 0.000 0.000 - 0.560 0.353 0.024 CL -0.526 CF -0.534

[0.001 0.000 0.000 - 0.001 0.001 0.000 CL  0.001 CF  0.004]

gnubg owns 2-cube:

  0.443 0.000 0.000 - 0.557 0.352 0.025 CL -1.066 CF -0.564

[0.001 0.000 0.000 - 0.001 0.001 0.001 CL  0.003 CF  0.005]

 

Full cubeful rollout with variance reduction

5184 games, Mersenne Twister dice gen. with seed 1404349941 and quasi-random dice

Play: world class 2-ply cubeful prune [world class]

keep the first 0 0-ply moves and up to 8 more moves within equity 0.16

Skip pruning for 1-ply moves.

Cube: 2-ply cubeful prune [world class]

 

 

 

Regards,

Ian Shaw