Show HN: Unflip – a puzzle game about XOR patterns of squares

Very nice and satisfying, but I would suggest ramping up the difficulty a little faster. I got until lvl 15 by just flipping the obvious areas, taking no more than 2 seconds. It's otherwise very cool and minimalist. Edit: limiting it to square flips was a great idea. There are just enough moves to make the answer non-obvious (after lvl 15), but not so many possible moves that you get overwhelmed. --- Edit 2: I just remembered I made a similar "game"[1], where you select columns to XOR with other columns and try to reach the target pattern. Use the scroll wheel and shift+wheel to change the pattern and size. That was actually part of a real research project in optimizing circuits for computing binary finite fields, where the "game" was a sandbox to try different algorithms. The best algorithm was actually found by someone playing in this sandbox and coming up with an efficient strategy. [1] https://boppreh.com/source/playreduce/

Really nice concept and super clean execution. Wish I’d had 1/2 this restraint on adding complexity when I made my own tile-based puzzle game[0] [0] https://www.hidden-mirrors.com

Stopped at 74 but managed to par all before that somehow. Didn't really do any problem solving/deep thinking about it, just clicking what felt right

Played until 27. All the levels were pretty easy, 15-30 seconds per level. Mainly because of the "par" feature

Level 24. I took a natural approach (pull each corner to the center) and got a rather unfortunate picture —- Edit: and the right answer was so obvious, too