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The solution for a 7x7 special puzzle (-3 to 3)
http://www.calcudoku.org/forum/viewtopic.php?f=16&t=99
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Author:  clm  [ Mon Nov 07, 2011 12:30 pm ]
Post subject:  Re: The solution for a 7x7 special puzzle (-3 to 3)

pnm wrote:
pnm wrote:
- my solver took 27 seconds to determine there was a single solution

Ok, this was using the "debug" executable. The optimized executable took 9.7 seconds.


Thanks, Patrick, for your support and information, 9.7 seconds for a computer... and a rating of 214... perhaps is too hard for daily puzzles, but for books may be interesting. The curious thing for this type of puzzles is that the "addition" (and the product of course) of a line is always even (0) regardless of the size. They are very easy to generate and generally with one or two conditions must have a unique solution. I am thinking now in a non-symmetrical 6x6, [-2,3] or [-3,2], perhaps valid for daily puzzles.

Author:  arjen  [ Wed Nov 09, 2011 9:11 am ]
Post subject:  Re: The solution for a 7x7 special puzzle (-3 to 3)

Not only for the book, but also for preimuim users ;)
Maybe not a daily puzzle but a puzzle for 3 days.

And if possible change 'Save for later' in 'Snapshot' 1 - 2 - 3 - 4 and a button to restore a snapshot.

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