Sanetsu died in 1658 and ten years later in 1668, Sanchi petitioned to Masayuki HOSHINA, who was the feudal lord of the Aizu Domain, and others and assumed the position of the meijin godokoro which had been vacant.
算悦は万治元年(1658年)死去し、その10年後の寛文8年(1668年)に算知は会津藩主保科正之などへ嘆願し、欠所となっていた名人碁所に就く。