I ran across, almost by accident, this puzzle by Kay Kurono. The title is “Angel of ants”.
This ought to be recognised as one of the all-time great puzzles, up there with Rubik’s Cube and the infamous “Al Escargot” Sudoku.
Here it is:

Before even thinking of starting “Angel of Ants”, warm up with this little toughie with title “Car” by MagicDeath. Once you’ve solved “Car”, you’ll have all the mental tools necessary to solve “Angel of ants”. But be warned, “Angel of ants” is an order of magnitude more difficult.
Both puzzles come from the app “Nonograms Katana”, available as an android app or directly through browser on https://nonograms-katana.com/play/
Here is “Car” by MagicDeath.

