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AlphaGo’s ultimate challenge: a five-game match against the legendary Lee Sedol

Game 5 - March 15, 2016After a loss in Game 4, and a move early on that looked like a mistake, but could have been a creative and effective new move, AlphaGo won Game 5 against the legendary Lee Sedol. This final game of the match was close until the very end, with commentators going back-and-forth about who was on top. But after 280 moves, Lee resigned, having gone through two byō-yomi overtime periods. This concludes the 5 game match between AlphaGo and Lee Sedol, with AlphaGo winning the match 4 games to 1 against the best Go player of the last decade, achieving a major milestone for artificial intelligence a decade earlier than many predicted. Michael Redmond, 9-dan, American commentator said: Kim Seongryong, 9-dan, Korean commentator said: Chris Garlock, Managing Editor of the American Go E-Journal said: With AlphaGo’s victory, Google DeepMind will donate the UDS$1 million in prize money to UNICEF, STEM (science, technology, engineering, and math) charities, and Go organizations. Here are the results and final board position from Game 5:“It was difficult to say at what point AlphaGo was ahead or behind, a close game throughout. AlphaGo made what looked like a mistake with move 48, similar to the mistake in Game Four in the middle of the board. After that AlphaGo played very well in the middle of the board, and the game developed into a long, very difficult end game...AlphaGo has the potential to be a huge study tool for us professionals, when it’s available for us to play at home.”“Just like the scientists, Go players are always trying to find new methods and approaches. And we are so happy when we find them. This Challenge Match has brought us Go players to new areas we’ve never explored. We are now seeing a lot more interest in playing Go. And even in one week, I feel like my Go playing has improved.”“This match… the drama, the historic aspect, the quality of the games, the brilliance of AlphaGo, the brilliance of Lee Sedol, and then the amount of media coverage. I just want to say thanks to the entire DeepMind AlphaGo team. This is a gift to Go. This is going to do a lot to bring Go to new audiences. We could not have dreamed this up any better, and it delivered beautiful games. This match has done what Go always does: brings people together in friendship and cooperation, and that, like the game itself, is beautiful.”