Elo is a comparative system, so your rating is based on your performance against others with regard to their ratings. It's not surprising that, even though it h

Elo is a comparative system, so your rating is based on your performance against others with regard to their ratings. It's not surprising that, even though it has only played for a short time, AlphaGo is already rated that high given it mopped the floor 4-1 with one of the best players who has ever lived. Expect it to be rated 1st soon, if that's the goal of the team behind it.