I recently watched "A Course on Puzzle Game Design" by Matthew VanDevander and he mentioned Stephen's Sausage Roll a few times.

https://youtu.be/85mAmP4k1Co?si=yuxpJ2xhkH7r_eo3

The video has lots of helpful information for puzzle game design. I have started to incorporate some of that knowledge into my own puzzle game https://qcgeneral29.itch.io/lets-learn