Solve online:
Rules: Shade some of the tiles on the board. In each bold-outlined region, one tile must be totally shaded and the rest must be totally unshaded. All shaded cells are connected as one contiguous area, but they never form a loop or a 2x2 block.
Puzz.link's rules page with picture examples can be found here.
Testing puzzle chosting again. The app that I use, puzz.link, recently merged a fork and added a bunch of new puzzle types. I don't understand most of them, but Parquet is pretty straightforward, and I bet a clever puzzle setter can do some cute things with these rules.