I'm trying to find a sci-fi book written before 1985.
It's set in the (then) near future, which is a kind of Blade Runner-esque cyberpunk-ish setting in which everyone has either a computer implant or something similar that allows direct interface with something like the Internet. There are a few unfortunates who can't adapt to the technology though, and the book focuses on one of these people, a man.
The other thing that sort of connects to this book is that they describe a game similar to Go in it (as far as I remember), but I could have my books mixed up.