So, if you, like me, enjoy picross, I have a fun little twist on it you may enjoy. Grab a normal picross puzzle...and start by filling the whole thing in. All of it. Then, try to, based on the clues for where the filled in blocks are supposed to be, to remove blocks until you finish the puzzle. It's tricky, and I'm not sure every puzzle can be completed this way, but why not give it a shot?