From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Mon, 12 Sep 2005 17:13:26 +0000 (+0000)
Subject: Patch from Mike:
X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/commitdiff_plain/c0eb17ced73917cdd01b89fe04a6e6d81d0fdd57?hp=c0eb17ced73917cdd01b89fe04a6e6d81d0fdd57

Patch from Mike:
 - remove the backtracking `Hard' level, on the grounds that it was
   incredibly slow and not really usable.
 - introduce an `Easy' difficulty level below the standard one; many
   people seem to find this puzzle unusually hard, so an easy level
   is particularly helpful.
 - highlight unfulfillable clue squares (but not yet any other types
   of obvious error).


git-svn-id: svn://svn.tartarus.org/sgt/puzzles@6299 cda61777-01e9-0310-a592-d414129be87e
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