take one get one free?

[Dungeoneer]

Leading 1-away/5-away; Crawford-game

South (me) to play 22 off the bar

GNUbg ID:
Y82YhQDIZ/AARg:8AmpAAAAIAAE

In a "money"- session or in a match at about equal score (or trailing) I would have taken two by Bar/23 22/20* 13/11* 6/4
but I wanted to play gammon-safe and played Bar/23 22/20*(2) 6/4

Spoiler

which GNU bg 0.90.0 4-ply markes as a huge blunder:

Code Select Expand

   1. Cubeful 4-ply    bar/23 22/20* 13/11* 6/4     MWC:  86.81%
      0.586 0.240 0.014 - 0.414 0.154 0.009
       4-ply cubeful prune [4ply]
   2. Cubeful 4-ply    bar/23 22/20*(2) 6/4         MWC:  84.01% ( -2.80%)
      0.492 0.158 0.005 - 0.508 0.129 0.004
       4-ply cubeful prune [4ply]


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