Siobhan Roberts: Genius at Play: The curious mind of John Horton Conway.
Fri, Aug 05, 2016./noise/books | LinkKindle. I think I found this via the long read (excerpt) at the Guardian. Well, the book is far longer than that, but not much more informative. The coverage of the mathematics is too weak to be worthwhile; for instance, I vaguely recall the axioms of a group, but still have no idea what group theory is or how they relate to geometry and symmetry. Oftentimes the rules of Conway's many and various games are poorly expressed. The man himself is pretty much what you'd expect: a bit above it all. It seems clear he's just getting away with what he can get away with.