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

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.

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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/

Although interestingly some other people in the comments here say they liked how the progression goes.

And that's an interesting little game you made.

And I spent quite some time creating an algorithm and solver to find the par for Unflip. I'm planning to release a blog post about it soon