
South Korean Go icon Lee Sedol closed out his illustrious career last month in a three-game match with home-developed artificial intelligence (AI) program HanDol, according to a report by the Yonhap News Agency.
Lee, who turned pro at 12 and went on to capture 18 international and 32 domestic titles, defeated HanDol in the opener of the best-of-three match in Seoul, playing with a two-stone advantage. The second match was played without any handicap, and HanDol was victorious. In the decisive third game, HanDol, developed by South Korea’s NHN Entertainment Corp., took down the 36-year-old master after 181 stones in Lee’s final match, held in his hometown of Sinan, 400 kilometers south of Seoul.
“I should have done better early, and then the (final game) would have played out much like the first one,” Lee said. “To be honest, I don’t think HanDol is particularly strong when playing with an advantage. I think some of the younger players would have beaten HanDol.”
Looking back on his career, Lee said, “I’ve enjoyed this ride. In the past, I used to say, ‘Baduk is my life,'” he said. “But now, I think there’s more to my life than baduk. I take away a lot of fun memories. Even though I lost today, I was happy to have played a good match.”
Note: This post has been updated to clarify the game sequence.
AlphaGo vs. AlphaGo; Game 34: The AI and the ponnuki
Friday January 10, 2020
After a brief break for the holidays, Michael Redmond 9P and Chris Garlock return with their latest AlphaGo vs. AlphaGo game commentary.
The game features a ponnuki* near the center of the board,” and Redmond says that “nowadays with people getting new ideas from AI’s, a lot of the old ideas — the old values, you might say — about things like ponnukis or josekis have been questioned. So in this game we get to see how an AI handles a ponnuki.” After that, Redmond warns, “things get very tactical, there’s a lot of calculating, a lot of groups and you have to figure out what’s alive and what’s dead; there’s a lot to figure out.”
The commentary was originally streamed live on Twitch, which gave viewers a chance to interact with Redmond and Garlock, who will be live-streaming more game commentaries — some AlphaGo vs. AlphaGo and some of Redmond’s games — on January 16, 23 and 30 on the AGA’s Twitch channel. Follow the AGA’s Twitch channel and get notified of live streams.
* Capturing a single stone, leaving a diamond shape. According to the proverb, “A ponnuki is worth thirty points” Sensei’s Library
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