Nan or -1 (test 5) for non clue cells ?
Thanks for the catch. I've updated that test case.
Now, the biggie. Implement a solver for advanced FAP. I never managed to create one that worked on all problems.
I was working on it last night, but it's tabled for now. I can't quite figure out how to solve the advanced logic portion that propagates along adjacent clues (including diagonal) to solve cells outside of that clue's reach.
Good problem but too difficult for a first contact. Maybe a first basic problem with small boards and/or clear cues (0/9). And after only, a more difficult one.
If anyone is interested more in these games, I've made quite a few of them on Sporcle.com. for the first of four Fill-a-pix (aka, mosaic logic puzzle) playlists.
Find common elements in matrix rows
Get the area codes from a list of phone numbers
Create a cell array out of a struct
Generate N equally spaced intervals between -L and L
Combined Ages 2 - Symmetric, n ≥ 3
Lights Out 12 - 5x5, three stages, <7 moves
Lights Out 9 - 5x5, light-only solution? II
Lights Out 11 - 5x5, with wrapping, x moves
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