In writing my GUNDAM fanfiction, there's one great limitation that I think many fiction authors face when they are writing about characters who are extraordinarily clever and intelligent: the character *can't* be more clever or intelligent than the author because, after all, it is the author who enables that character to devise his/her clever plans and schemes. Take Jin Yong's Wong Yung from LOCH/ROCH, for example: he characterizes her as perhaps among the most intelligent people to have ever lived, but to bring this character to life, Jin Yong must be *at least* as clever as Wong Yung; otherwise, he could not describe her thought processes (and results thereof).
I find myself running into this problem as a fiction writer because I don't consider myself extraordinarily devious or cunning, but I'm trying to write about characters who are. Any suggestions?