Hehe, that would be quite a thing to experience! Especially since Zach-likes were a big inspiration on some aspects of the game :)
How far in are you? I think that at some pointit will become impossible to mentally solve the puzzles without any notes, but who knows, you might be a super human :D
Viewing post in (Design Diary) Workworkworking on Workworkwork comments
24 was harder to do mentally, but also ended up being my favorite so far! Very neat once you figure out the constraints.
When I was at the height of my SpaceChem obsession, I would actually dream about it and even woke up in the middle of a night with a valid solution once! I suspect that game built a whole new brain region...