South Korean professional Go player Lee Se-Dol attends the press conference after the match against Google's artificial intelligence program, AlphaGo on March 9, 2016 in Seoul, South Korea. Google's computer program AlphaGo defeated its human opponent, South Korean professional Go player Lee Se-Dol in the first game. (Kim Min-Hee-Pool/Getty Images)
A Google computer program called AlphaGo has beaten a world champion of the Chinese board game "Go." Lee Se-dol was defeated today in Seoul. The ancient Chinese game has been considered very difficult for a computer to master, because of the nearly endless possible board configurations.
