This page is for records for professional players, in the sense of "mostest, bestest or fastest".
Also see Prodigy.
- China: Yang Dingxin (9 years, 9 months)
- Japan: Fujisawa Rina (11 years, 6 months) and Cho Chikun (11 years, 9 months)
- Korea: Cho Hunhyeon (9 years, ? months)
- Taiwan: Wei Haoting (10 years, 3 months)
- World: Yang Dingxin or Cho Hunhyeon
valerio: Cho Hunhyun, I think, is the world's youngest. He became 1 dan of the Hankuk Kiwon at 9.
- China: Fan Tingyu (age 16 and 7 months)
- Japan: Iyama Yuta (age 20)
- Korea: Park Junghwan (age 17)
- Taiwan: Zhou Junxun (age 17 or 18)
- World: Chen Yaoye
- China: Chen Zude (at 38, in 1982)
- Japan: Nakamura Yutaro (at 72, in 1981)
- Korea: Cho Namcheol (at 59, in 1982)
- Taiwan: Lin Zhihan (at 28, ten months, in 2009)
- World: Nakamura Yutaro
- China: Ma Xiaochun (50)
- Japan: Cho Chikun (72)
- Korea: Cho Hunhyeon (158)
- Taiwan: Zhou Junxun (48)
- International titles: Lee Changho (21)
- World: Cho Hunhyeon
Not Fan Tingyu at 16 years and 7 months
To clarify the apparent confusion, Go Game Guru explains here that age is counted starting from 1 at birth in Korean culture, so even though it's usually said that Lee Changho was 17 when he won the 3rd Tongyang Securities Cup, he was actually only 16 by the Western reckoning of age. This means that Lee Changho still holds this record.