Currently the Challenges menu seems a bit scattered. For example, it starts with Chess Knight which is easy and silly, and then goes from there immediately to A Frivolous Excursion which is probably one of the hardest (well, longest, at least) challenges we have. There's no particular rhyme or reason to the way things are organized (unless @kostmo has a secret organizational principle I haven't divined 😄 ). This is no one's fault, just the natural result of adding challenges incrementally over time.

Better organization could include (1) putting the challenges in a better order, and/or (2) creating more categories/subfolders to put challenges in.