You also see a similar division to 19th century and 20th century when a player called Go Seigen changed the way the game is player even more, I feel, than AI di

You also see a similar division to 19th century and 20th century when a player called Go Seigen changed the way the game is player even more, I feel, than AI did (but don't take my word, at 7kyu I'm far from qualified to understand how professionals play)