Super clever idea, and executed very well! I love the minimalist design and the subtle jokes/references that come with it. Overall the game just really stands out with its uniqueness.
Some small UX related things could still be improved, such as the disappearing hints others have mentioned. Another one would be a lack of indications if the blocks you placed fulfill all conditions, such as a colored outline. Or, to combine it Alphros idea, maybe have a dynamic list of conditions in colored text (red/green) that appear when they are fulfilled or violated?
Also, one thing that I think has more to do with itch than your game: for me the game didn’t take up the whole window and some stuff overlapped weirdly. Would it be possible to enable the fullscreen button in the itch settings (as that might be a workaround)?
Anyway, all of those are really just nitpicks. To keep it short, the game is great and I had a lot fun playing it. Good job!