In December 2020 there was a logic puzzle advent calender on mathebau.rocks. These puzzles will be uploaded to the puzzle portal in the next weeks.
Rules: Blacken some cells, such that all black cells ar horizontally and vertically connected. No 2x2 area can be blackened. Every (orthagonally) connected white area contains exactly one number, that indicates the number of cells in the white area.
The question mark stand for any number. Numbers cannot be blackened.
Solution code: The value of the question mark, after that for each row (top to bottom) the longest run of neighboured white cells.
on 25. July 2021, 13:05 by CJK
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