Go is a complex Chinese board game that is considered the ultimate for machine intelligence.
Goa game is played by more than 40 million people worldwide.
The number of possible positions in the game are more than the number of atoms in the universe.
The win came in the first tie of the five-match series being held in Seoul, South Korea.
The tournament, Google Deepmind Challenge match, started on March 8 and will conclude on March 15.
Lee resigned after about three-and-a-half hours, with 28 minutes and 28 seconds remaining on his clock.
He was ranked second in international titles.
Before the matches, Lee had said that he could win against AlphaGo.
AlphaGo had defeated Fan Hui in January this year.
Hui is the European champion of the game.
Facebook has been working on a similar AI for beating Go.
Facebook CEO Mark Zuckerberg has said that his artificial intelligence (AI) scientists are getting close.
source: www.techworm.net
