This one is so highly entertaining, mostly due to Fred Gwynne's work as the chess master named Chessman. If Mr. Chessman hadn't turned out to have been what he was (don't want to give it away!), he's someone I'd love to be friends with. His style of speech is very "listenable," as is Gwynne's very voice. As to the comments about how the Cold War's being over (or is it?) makes this episode not "work," well, that's what the imagination is for. That's like saying a bit of entertainment set during the Crusades or the Gold Rush couldn't work because those times are in the past, right?