Google’s AlphaGo AI defeats world Go number one Ke Jie / DeepMind goes 1-0 up in three-game match Google’s AI AlphaGo has done it again: it’s defeated Ke Jie, the world’s number one Go player, in the first game of a three-part match. AlphaGo shot to prominence a little over a year ago after beating Korean legend Lee Se-dol 4-1 in one of the most potent demonstrations of the power of artificial int