page_title: Lee Sedol
hierarchical_section_title: Lee Sedol
caption_attribution_description: 한국어: LG전자, 이세돌 9단과 함께 학생들의 꿈 그린다 ■ 이세돌 9단, LG전자의 대국 후원비용 전액 기부 결정 ■ 성민복지관에 ‘G5’와 ‘캠 플러스’ 및 복지시설 리모델링 지원 ※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다
context_page_description: Lee Sedol, or Lee Se-dol, is a former South Korean professional Go player of 9 dan rank. As of February 2016, he ranked second in international titles, behind only Lee Chang-ho. He is the fifth youngest to become a professional Go player in South Korean history behind Cho Hun-hyun, Lee Chang-ho, Cho Hye-yeon and Choi Cheol-han. His nickname is "The Strong Stone". He was defeated by the computer program AlphaGo 1-4 in a series in March 2016.
  On 19 November 2019, Lee announced his retirement from professional play, arguing that he could never be the top overall player of Go due to the increasing dominance of AI. Lee referred to them as being "an entity that cannot be defeated".
context_section_description: Lee Sedol (Korean: 이세돌; born 2 March 1983), or Lee Se-dol, is a former South Korean professional Go player of 9 dan rank. As of February 2016, he ranked second in international titles (18), behind only Lee Chang-ho (21). He is the fifth youngest (12 years 4 months) to become a professional Go player in South Korean history behind Cho Hun-hyun (9 years 7 months), Lee Chang-ho (11 years 1 months), Cho Hye-yeon (11 years 10 months) and Choi Cheol-han (12 years 2 months). His nickname is "The Strong Stone" ("Ssen-dol"). He was defeated by the computer program AlphaGo 1-4 in a series in March 2016. 
  On 19 November 2019, Lee announced his retirement from professional play, arguing that he could never be the top overall player of Go due to the increasing dominance of AI. Lee referred to them as being "an entity that cannot be defeated".
caption: Lee Sedol in 2016
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