buggnubg - Bugs: bug #45618, resign (normal) isn't accepted...


bug #45618: resign (normal) isn't accepted when it should be

Submitted by:  None
Submitted on:  Fri 24 Jul 2015 03:22:34 PM UTC  
Originator Name: Tim LeonardOriginator Email: -unavailable-
Item Group: Other bugCategory: Evaluations
Release: 1.04-ReleasePrivacy: Public
Operating System: AllOS Type: Any
Processor Type: AnySeverity: 3 - Normal
Open/Closed: OpenAssigned to: None
Priority: 5 - NormalStatus: Confirmed

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Mon 27 Jul 2015 08:39:51 PM UTC, comment #1:

The resignation is evaluated at 0ply, which is not perfect. in the attached game it thinks player 1 loses 0.02% gammons.

Evaluating it at 2ply would do the right thing here (but it is not perfect either and could miss other cases, although surely many less than 0ply).

I think the choice of 0ply is from when CPUs were much slower and the idea was to avoid causing a delay when the user wants to finish the game quickly. Nowadays 2ply would probably be fast enough, or we could do something like : 0ply, if accept, we're done, if not reevaluate at deeper ply.

Philippe Michel <plm>
Project Member
Fri 24 Jul 2015 03:22:34 PM UTC, original submission:

On my turn, when any roll will allow me to bear off at least one man (and then lose), my offer to resign (normal) should be accepted but is declined.



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Attach File(s):

Attached Files
file #34508:  gnubg-Tim_7p_2015-07-24.sgf added by None (60KiB - application/octet-stream)


Depends on the following items: None found

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  • -unavailable- added by plm (Posted a comment)
  • -unavailable- added by None (Submitted the item)

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    Follow 5 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Mon 27 Jul 2015 08:39:51 PM UTCplmOperating SystemMac OS X Mavericks=>All
      OS Type64Bit=>Any
      Processor TypeIntel=>Any
    Fri 24 Jul 2015 03:22:34 PM UTCNoneAttached File-=>Added gnubg-Tim_7p_2015-07-24.sgf, #34508

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