AlphaGo versus Ke Jie

At the time of the match Ke Jie was ranked 1st among all human players worldwide under Rémi Coulom's ranking system, and had held that position since late 2014. Ke Jie was also ranked number one in the world under Korea Baduk Association's, Japan Go Association's and Chinese Weiqi Association's ranking systems. The version of AlphaGo in this match was AlphaGo Master, the one that defeated top pros in 60 online games, using four TPUs on a single machine with Elo rating 4,858. DeepMind claimed that this version was 3-stone stronger than the version used in AlphaGo v. Lee Sedol. AlphaGo Master was actually the second best version that DeepMind had at the time, for it was already in possession of AlphaGo Zero, a version much stronger than the Master version; this can be known by the fact that Nature received their paper on AlphaGo Zero on April 7, before the games with Ke Jie. ==Games==

Summary Google DeepMind offered $1.5 million winner prizes for this match while the losing side took $300,000 for participating in the three games. However, Ke later lost ground on the lower part of the board. About 4 hours into the game, AlphaGo simplified the position, and it became clear that Ke was losing. AlphaGo (black) won by resignation after move 155. Game 3 On 27 May, Ke Jie (white) resigned in game three, finishing the series with a 3–0 win for AlphaGo. At resignation, AlphaGo (black) had roughly an hour and a half of its time remaining, while Ke Jie had roughly 32 minutes left on the clock. ==Coverage==

The match was barred from being live-streamed in China. The game however has been covered in China both online and on national television via Zhejiang TV. ==See also==