Extremely cute game that makes intelligent use of the "common" knowledge of Chess piece movement to set up the puzzles. It's of course not Chess and even has some sort of gravity mechanic to it so it surely is its own brand of toy. It also previews and teaches you movement piece by piece with the starter levels, so even if you don't know how to move Chess pieces normally you can figure it out very quickly.
The music is a single short loop and having sat here for like an hour playing it I can't say that it bothered me at any point, so it's a very good track. The art is super simple and the small details for when you select and move pieces feel very natural.
Some of the challenges were a little bit frustrating, particularly the last one where you had to flush positioning quite often to stack things up so that took a little fumbling. There were some red herrings too (maybe a pawn or a platform that didn't get used) but maybe that was me finding a different solution.
I had to refresh the page and redo 24 again so the medal unlocked, but I was pretty satisfied just from completing the challenge. Great, simple game. You should sell this as a Mobile game before someone else steals it.