Mathematical Theory of Go Endgames

Elwyn Berlekamp and David Wolfe have developed a mathematical theory of the late endgame in Go based on the combinatorial game theory of John Horton Conway. It is outlined in their book, 'Mathematical Go'. Whilst not of general utility in most play, it greatly aids the analysis of certain classes of positions.

It is worth noting that John Conway developed the mathematical concept of surreal numbers while studying Go endgames.