SEOUL, March 10 -- Google's computer program AlphaGo on Thursday beat South Korean Lee Sedol, the world champion of the ancient Chinese board game, raising its lead to 2-0 in the second of a historic five-game match.
Lee resigned about four and a half hours after the second match kicked off at about 1 p.m. local time (0400 GMT) at Four Seasons hotel in Seoul.
After exchanging 211 moves with AlphaGo, the 33-year-old accepted his second loss as the computer program took an unassailable lead.
During the first face-off on Wednesday, Lee resigned some three and a half hours after 186 moves were exchanged with each other.
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