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 two cells in each area, such that every black cell is orthogonally neighboured with exactly one other black cell.
In other words: The blackened cells form (horizontal or vertical) dominos that can only touch diagonally.
Solution code: For every second row (rows 2, 4, 6, etc.) the number of horizontal dominos, followed by the number of vertical dominos (each domino counts as 1).
on 25. July 2021, 13:08 by CJK
Labels den neuen Regeln angepasst
on 10. February 2021, 16:18 by SudokuExplorer
Thanks for this ginormous norinori!
on 9. February 2021, 20:36 by Dina
Thanks for the fun puzzle! :-D