Hats off :)
I'm a very bad Go player. That is to say, I know the rules, and have the rudimentary insight that comes with a mathematical mind, but have never put in serious effort to the game.
Twenty years ago, in an era when Deep Blue had already thrashed Kasparov at Chess, I could still easily beat a leading AI at Go. It was considered an immeasurably harder problem than Chess.
And now they've cracked it!