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: Color some cells black, such that all black cells are vertically and horizontally connected and there is no black 2x2 area. Grey cells cannot be blackened.
The numbers indicate, how many of the (diagonally and orthogonally) neighboured cells are black: Every number stands for one group of vertically and horizontally connected black cells, and there is at least one non-black cell between different groups. Position and order of the numbers do not matter.
Solution code: For every row (top to bottom) the number of black cells
on 25. July 2021, 13:04 by CJK
Labels den neuen Regeln angepasst
on 22. June 2021, 08:43 by Dugong
Smiley face =)