You don't get to chair the Retropolis Chessplayers' Association by being dim. In fact, you may not make it even if you only flicker from time to time.
So when it's time to track down the brain thieves who've made off with one of the finest chess minds in the Future That Never Was, well: first stop, Velikovsky at the Chessplayers' Association.
He isn't a criminal mastermind (as far as we know) but he may be privy to a clue or two that'll finally put those brain-stealing yeggs behind bars.
If there's one thing I really hate, it's a brain-stealing yegg. Know what I mean?