buggnubg - Bugs: bug #42154, At the end of a game, Wants to...

 
 

bug #42154: At the end of a game, Wants to force a hit, when I can just bear off

Submitted by:  None
Submitted on:  Sun 20 Apr 2014 09:02:40 PM UTC  
 
Originator Name: Chris FahlmanOriginator Email: -unavailable-
Item Group: Other bugCategory: Other
Release: 1.01-ReleasePrivacy: Public
Operating System: LinuxOS Type: 64Bit
Processor Type: IntelSeverity: 3 - Normal
Open/Closed: ClosedAssigned to: None
Priority: 5 - NormalStatus: Works For Me

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Tue 22 Apr 2014 07:27:38 PM UTC, comment #1:

This is not a bug. According to the rules, you must play both dice if possible (and if you can play either one but not both, you must play the largest one).

In your position, 2/off, playing only the 6 is illegal since you can play 2/1*/off using both dice.

As you note, this doesn't matter in the position at hand, but see for instance http://www.bkgm.com/faq/BasicRules.html#can_i_play_one_number_in_such_a_way_as_to_avoid_playing_the_other_ for nastier examples.

Philippe Michel <plm>
Project Member
Sun 20 Apr 2014 09:02:40 PM UTC, original submission:

There is a bug where GnuBG wants me to force a hit, when I can just bear off to end the game. I have checker on the 2 point. Opponent has a checker on 24 point. I rolled a (6,1). I should be able to play the checker off with the 6 die and end the game. But GnuBG refuses to allow this move: I must hit the checker with the 1 die and then bear-off to end the game. (Either way, I win the game, but I shouldn't have to hit.)

I included a screenshot and a saved game.

Version GNU Backgammon 1.03.000 Mar 17 2014
OS: linux.

Anonymous

 

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Attached Files
file #31222:  BuggyBackgammonEnd.ThinksIMustHit.sgf added by None (334KiB - application/x-go-sgf)
file #31223:  BearingOffError.png added by None (913KiB - image/png)

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -unavailable- added by plm (Posted a comment)
  • -unavailable- added by None (Submitted the item)
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    Follow 4 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Sun 27 Apr 2014 07:09:41 PM UTCplmOpen/ClosedOpen=>Closed
    Tue 22 Apr 2014 07:27:38 PM UTCplmStatusNone=>Works For Me
    Sun 20 Apr 2014 09:02:40 PM UTCNoneAttached File-=>Added BuggyBackgammonEnd.ThinksIMustHit.sgf, #31222
      Attached File-=>Added BearingOffError.png, #31223

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