Lee Sedol continued games until the summer of 2019, more than three years after the match. He quickly dropped in strength while other players who already were s

Lee Sedol continued games until the summer of 2019, more than three years after the match. He quickly dropped in strength while other players who already were stronger than him during the challenge were further rising in strength, surpassing all previous players according to the graph shown at the Go Ratings website. https://www.goratings.org/en/history/ https://www.goratings.org/en/history/ Just like in mathematics many professional Go player peak before 40, after which the slowly become weaker and weaker.