I don't know about surprise, the the AKA stream was pretty shocked when AlphaGo was playing aggressively from the 5th line/column from the right early in the g

I don't know about surprise, the the AKA stream was pretty shocked when AlphaGo was playing aggressively from the 5th line/column from the right early in the game. Apparently going in on the 3rd is already very risky and the 4th is almost never done.