South Korean champion Go Lee Sedol announced his retirement from the professional game. He called the reason for the decision superiority of artificial intelligence in competitions. This was reported by Yonhap with reference to Sedol.
With the debut of AI in go games, I realized that I was no longer the best. And even if I become number one due to crazy efforts, now there is an entity that cannot be overcome.
Lee Sedoll in a conversation with Yonhap
Moreover, according to Yonhap, Sedol will still play at least one match in go to mark his departure from the professional game. In December, he plans to compete with the South Korean AI HanDol, which defeated the top five players in the country.
The saddle will receive the advantage of “two stones”, but he is not sure that even with him he can defeat the system in the first match. According to the player, he is going to calmly compete with AI, although he will do everything possible to win.
For many years, Go was considered one of the most difficult games for AI, since the number of combinations in it is greater than the atoms in the observable universe. However, in 2016, DeepMind’s AlphaGo system defeated Sedol for the first time in four out of five matches.
In the late 2000s, Sedol was considered the best go player in the world. He believed he would defeat the AI and publicly apologize to fans from South Korea after losing. As of November 2019, Sedol remains the only person to win AlphaGo in at least one match.
In 2017, DeepMind improved the algorithm and released AlphaGo Zero, which was able to defeat the past AlphaGo. Unlike the first algorithm, the new version was not taught on people’s games, but played on its own.
Three days after such training, the system began to play at “superhuman” speed and defeated its predecessor in 100 games against zero. According to DeepMind, AlphaGo Zero is the strongest go player in world history.