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3 older comments
Guillaume
on 22 Feb 2015
I like the conceptis puzzles. I even implemented a solver in matlab for the Pic-A-Pix a long time ago. Not sure what happened to the code. At the moment, my favorite are the Slitherlink puzzles.
goc3
on 23 Feb 2015
Conceptis does a good job with their site; I especially like the free weekly puzzles. They added a skyscrapers puzzle in the recent past, and someone has posted that problem to Cody, in case you weren't aware: http://www.mathworks.com/matlabcentral/cody/problems/2026-skyscrapers-puzzle. Also, you might want to find that code again, if you haven't already solved the two logic-art problems that have been posted: http://www.mathworks.com/matlabcentral/cody/problems/1700-solve-the-picross-easy and http://www.mathworks.com/matlabcentral/cody/problems/1701-solve-the-picross-hard.
goc3
on 23 Feb 2015
Also, I'd like to see you post a slitherlink puzzle for solving or checking solutions. I'm not quite sure how to implement it, given the interposing matrices that the clues and slithering line would require.
Jean-Marie Sainthillier
on 23 Feb 2015
Good explanations + Good tests = Good Problem.
James
on 23 Feb 2015
The only thing I'd add to the problem description is that while all rows must be unique, and all columns must be unique, a row can equal a column and the matrix can still be "solved." Other than that, good problem.
goc3
on 24 Feb 2015
Thanks, James and Jean-Marie. Your likes mean a lot. Also, I updated the description to specify rows are unique amongst rows and columns are unique among columns.
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