Inoue Dosetsu Inseki

井上道節因碩 (1646–1719) Third head of the Inoue house, (1692–1719), or the fourth if counting Nakamura Doseki^[1]. Earlier name Kuwabara Dosetsu (桑原道節), disciple of Dosaku and teacher of Dochi.

He became Meijin Godokoro in 1710. He is also famous for composing the Igo Hatsuyoron, an extremely hard tsumego collection (even for professionals) used to train his students. He also composed an easier collection called Yoshin Teiki, most of which is now lost. Other books include Denshinroku?, a record of Honinbo house and the Go world.

His pupils included Aihara Kaseki.

After Dosaku’s death, Dosetsu took care of young Dochi.

[1] See Gennan Inseki: he changed the numbering officially used by the Insekis.