Aidu Chuo Hospital Cup

Aidu Chuo Hospital Cup (会津中央病院杯) is an all female professional tournament in Japan. It is sponsored by Onchikai (Aidu Chuo Hospital). From the 4th edition, the name was changed to the 'Female Tachiaoi Cup' (女流立葵杯). Tachiaoi is the Japanese name of Althaea rosea, which is the city flower of Aizu-Wakamatsu City where the sponsor is based.

It is the third most prestigious women's title, after Women's Honinbo and Women's Meijin, in the 2020 Nihon Ki-in ordering. The prize for the winner is JPY 7,000,000, while the runner up will get JPY 2,200,000.

All women pro players will play from preliminaries. Eight players will be qualified to the main tournament. Women's title holder will be seeded to the main tournament.*

• http://archive.nihonkiin.or.jp/english/topics/14/topics2014_01.htm#140131c

In its original format, it was the only women's tournament to feature a (single) 2-day final game (six hours each). From the 4th edition it was restructured to become a title tournament, the final being best-of-3 match with 3 hours of main time.

• More information at Tachioi Cup, Go for Everyone

It's interesting to note that the 2019–21 editions have served as matches between Fujisawa Rina and the Female Kisei, which have all been won cleanly by Rina. However, in Rina's only (2019) challenge for the Female Kisei, she was beaten 2–0 by Asami.

RandomThoughts: The proper transcription of 会津 is Aizu, not Aidu. I have already corrected the spelling inside the article, but have no idea how to change the page title.

Dave: I suppose ‘proper’ is in the eye of the beholder. This tournament is named for the sponsor, 会津中央病院, which happens to call itself ‘Aidu’ Chuo Hospital, as can be seen in the upper left of its website. So I reverted the spelling.