Blacken some empty cells such that all black cells are connected and no 2x2 area is completely black. Clues determine how many of the vertically, horizontally and diagonally adjacent cells are white. Each number corresponds to a connected group of white cells. Different groups of white cells around the same clue cell are separated by at least one black cell.
Solution code: For every column from left to right the length of the longest sequence of black cells
on 22. October 2022, 14:42 by Drawoon
penpa+: https://tinyurl.com/2a2hu4bs
on 22. October 2022, 14:39 by Drawoon
to be clear, clue cells count as white cells
on 17. December 2015, 13:46 by usp
-Typo