https://bugs.kde.org/show_bug.cgi?id=384546
Ian Wadham <iandw...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REPORTED |RESOLVED
Resolution|--- |NOT A BUG
--- Comment #4 from Ian Wadham <iandw...@gmail.com> ---
@Steve: I am the author of the puzzle generators and solvers in KSudoku.
My congratulations to you on reaching Unlimited level in Killer KSudoku, but I
am sorry, this is not a bug: the puzzle you show in your screenshot does indeed
have a unique solution. The Notes you show are correct for normal constraints
on rows, columns and 3x3 boxes and they can make cages add up correctly, BUT
you have missed one further constraint, which applies to Killer KSudoku cages
but not Mathdoku cages. All the digits in a Killer cage must be unique. In the
cage with total 23 at top center, there is already a 1, so you cannot have a 1
in the bottom-right cell of that cage. It must be a 2. That forces the cell to
its left to be a 7 and then the cage with total 18 must have unique contents.
There is only one place its 7 can go. Thanks for the interesting case!
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