My last 2 posts may make me look as if I'm done with this Genius, hands down. But I'm actually stuck on a whole lot of clues. Sometimes I have ideas for solutions, but can't see any logical parsing or any 9d in them. Worse are the ones for which I don't even have any understanding at all.
Clues such as 1d, 11a, 17d or 21d, among others. Hints, please?