Google’s AlphaGo defeats human Go champion: All you need to know about the game

South Korean professional Go player Lee Sedol, right, appears on the screen during the second match of the Google DeepMind Challenge Match against Google's artificial intelligence program, AlphaGo at the media room in Seoul, South Korea, Thursday, March 10. Google's computer program AlphaGo defeated its human opponent, South Korean Go champion Lee Sedol, on Wednesday in the first face-off of a historic five-game match. Read more here (Source: Photo by AP Photo/Lee Jin-man)

Lee Sedol puts the first stone against Google's artificial intelligence program, AlphaGo during the second match of the Google DeepMind Challenge. Google's computer program AlphaGo defeated its human opponent, South Korean Go champion Lee Sedol, on Wednesday in the first face-off of a historic five-game match. Read more here (Source: Photo by AP Photo/Lee Jin-man)

Lee Sedol, right, prepares for his second stone against Google's artificial intelligence program, AlphaGo, as Google DeepMind's lead programmer Aja Huang, left, sits during the second match of the Google DeepMind Challenge Match in Seoul, South Korea, Thursday, March 10. Google's computer program AlphaGo defeated its human opponent, South Korean Go champion Lee Sedol, on Wednesday in the first face-off of a historic five-game match. Read more here (Source: Photo by AP Photo/Lee Jin-man)

Sedol, center, arrives with his daughter Lee Hye-lim for the second match of the Google DeepMind Challenge Match. Read more here (Source: Photo by AP Photo/Lee Jin-man)

Global Go fans were shocked at the victory, artificial intelligence experts called the moment historic and Google DeepMind CEO Demis Hassabis compared the victory to landing on the moon. Read more here (Source: Photo by AP Photo/Lee Jin-man)

After his first loss, Lee said he was in shock as he never expected to lose. Three remaining games run until Tuesday. Read more here (Source: Photo by AP Photo/Lee Jin-man)