Lee Sedol — SPARQNOW

At-a-Glance

Former professional Go player of 9 dan rank.
Ranked second in international titles (18) as of February 2016.
Played a historic series of matches against the AI program AlphaGo in March 2016, losing 1–4.
Retired from professional play in November 2019, stating he could not defeat AI.
Known by the nickname "The Strong Stone" ("Ssen-dol").

Biography

Lee Sedol (born March 2, 1983) is a South Korean former professional Go player, holding a 9 dan rank. As of February 2016, he ranked second globally in international titles with 18 wins, behind only Lee Chang-ho. He is known by his nickname, "The Strong Stone" ("Ssen-dol").

In March 2016, Lee Sedol participated in a landmark series of matches against the artificial intelligence program AlphaGo, ultimately losing the series 1–4.