In this photo by Ahn Young-joon, schoolchildren watch a smartphone screen showing the live broadcast of the Go board game series finale between Google DeepMind's artificial intelligence machine, AlphaGo, and professional Go player Lee Sedol at his Baduk Center in Seoul, South Korea. The software beat its human opponent with four wins to Lee's one in the best-of-five series. It was one of the most intensely watched events in the past week across Asia. The final match was broadcast live on three major TV networks in South Korea and on big TV screens in downtown Seoul. Many South Koreans learn the popular board game at a young age, and Lee's center holds classes and allows children to compete against each other.