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List:       kde-bugs-dist
Subject:    [Bug 265857] Solver reports spider is solvable, but no legal move
From:       Shlomi Fish <shlomif () iglu ! org ! il>
Date:       2011-02-10 18:49:05
Message-ID: 20110210184905.E52337CF4F () immanuel ! kde ! org
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https://bugs.kde.org/show_bug.cgi?id=265857


Shlomi Fish <shlomif@iglu.org.il> changed:

           What    |Removed                     |Added
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                 CC|                            |shlomif@iglu.org.il




--- Comment #4 from Shlomi Fish <shlomif iglu org il>  2011-02-10 19:49:04 ---
(In reply to comment #0)
> Created an attachment (id=57006)
 --> (http://bugs.kde.org/attachment.cgi?id=57006) [details]
> This puts spider into a weird state.
> 
> Version:           3.4 (using KDE 4.5.5) 
> OS:                Linux
> 
> Starting the game with the attached savedstate.xml produces this situation.
> 
> Reproducible: Always
> 
> Steps to Reproduce:
> Start kpat/spider with the attached savedstate.xml
> 
> Actual Results:  
> Solver reports spider is solvable, but no legal move exists
> 
> Expected Results:  
> Either the game is not solvable or a legal move exists.

I can reproduce this on kde-4.6.0 on Mandriva Linux Cooker (will become
Mandriva 2011.0 soon). It's also in /usr/bin/kpat which is without my
downstream patch to add http://fc-solve.berlios.de/ support (which cannot solve
Spider presently anyway). As reported, the problem is that the built-in kpat
solver reports the game as "winnable" but the demo or hint buttons do not do
anything. 

Given some spare cycles, I'll try to investigate it, and prepare a fix,
independent of my fc-solve patch.

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