This is a review article written after watching the broadcast.
'Questions from Sohn Seok-hee' Lee Sedol ultimately succumbed to Go AI.
On the 8th broadcast of MBC 'Questions from Sohn Seok-hee,' various conversations took place with professional gamer "Faker" Lee Sang-hyeok and 9-dan Lee Sedol.
That day Sohn Seok-hee mentioned Lee Sedol's past remark when he expressed confidence before facing Go AI AlphaGo. At the time he said, "I will make it 5-0. I will do my best," he said confidently.
Contrary to his confidence, after losing game 1 Lee Sedol could not hide his dismay as he lost consecutively in games 2 and 3. And in the much-anticipated game 4 he played the 78th move known as the "The Divine Move," earning one win and drawing attention.
About the matches against AlphaGo, Lee Sedol revealed, "I was more dismayed by game 2 than game 1. In game 1, because it was my first time playing I felt like I couldn't show my true ability. In game 2 I really did my best. I lost without being able to exert any strength."
He said the loss in game 3 was different. Lee Sedol said, "In game 2 I really did not expect to lose. In game 3 it felt like 'there is no way to win.'"
When asked about the secret to getting one win against AlphaGo, Lee Sedol confessed, "It was already a predetermined flow. At move 68 you could call it a decisive move. It was not a normal move. If it had been a game with a person it would be a dirty move. A trick. It was not the best move."
He continued, "The position was bad but I played the safest move. You're not supposed to play that way. I induced a bug in AlphaGo. Because it was hard to win normally I introduced a variable. By playing that I confused AlphaGo," and added, "It might be the first and last time I played such a trick."
Sohn Seok-hee praised him, saying, "Playing that way is also skill," but wondered, "Why didn't you try to induce a bug in game 5?" Lee Sedol replied, "If I had won game 3 I might have been able to play games 4 and 5. But game 5 was not a series comeback overall. Even if you won it would still be 2-3. Was it necessary to play a move like the 68th? I just played the game normally."
Above all, Lee Sedol attracted attention by revealing that after retirement he once had a rematch with AI. He said, "I retired at the end of '19. In '21 I was curious. How different could it be?" "I started with two stones handicap. Because I played quickly I lost. I lost consecutively even with two stones," and he added, "To be exact, from the end of 2017 it became impossible for humans to beat AI Go."
He added, "I played a very fair game. The AI had 20 seconds, I had no time limit. I started with two stones and no time limit, and it would win," he said, bringing laughter.
Lee Sedol surprised everyone by saying that in the rematch with AI one game lasted as long as a month and a half. He said, "If I forgot how to play while playing I postponed it to the next day. That led to victory. I actually won two games."
He changed the conditions to a neutral kok so in the third match they fought again but could not beat the AI. In the end Lee Sedol said, "At that time I felt really hopeless. I felt like hitting a wall. The feeling was that no matter what move I used I couldn't win. Even if I let it sit and played for the rest of my life I couldn't beat the AI. Feeling that wall, I think I stopped playing Go."
[Photo] 'Questions from Sohn Seok-hee' broadcast screen capture
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