What gym puzzles do you think are the most interesting/challenging/annoying?
I always thought Lt. Surge's puzzle was very annoying when I first played Yellow version, but looking back, most of the first generation puzzles were a little annoying.
I also remember I used to always restart my Crystal version because I'd get stuck at the fourth gym because I didn't know how to get to the leader.
However, some I liked were Blaine's (Answering questions then fighting trainers if incorrect), Wallace/Juan's (Stepping on all the patches of ice exactly once), and Candace's (Sliding into the snowballs to break them).
Also, besides gyms, what about other puzzles such as the Rocket Hideout in RBY or the guy in RSE who would make puzzles and reward you for completing them (I forgot what he was called).