Google's Go-playing AI still undefeated with victory over world number one

AlphaGo has won its second game against China's Ke Jie, sealing the three-game match in its favour

Google's Go-playing AI has won its second game against the world's best player of the ancient Asian board game, Chinese 19-year-old Ke Jie, taking the three-game match in the process.

AlphaGo, the AI created by Google subsidiary DeepMind, reported that Ke's first 50 moves were "played perfectly", according to DeepMind chief executive Demis Hassabis. In the post-game press conference, Hassabis, who was a child chess prodigy, said: "For the first 100 moves, it was the closest we've ever seen anyone play against the Master version of AlphaGo."