Alphabet machine beats world’s top Go player in a victory for AI

A machine built by Alphabet Inc. has officially defeated the world’s top-ranked player of the ancient board-game Go, a decisive demonstration of artificial intelligence’s ability to master some of the most complex human endeavors.
AlphaGo bested Ke Jie, 19, Chinese prodigy who boasted a year ago that the AI could never beat him at a game he’s played professionally since the age of 10. But on Thursday, the world No. 1 lost his second match in a three-game series in the tourist t