As Ieyasu TOKUGAWA loved go and shogi, he created Goshogidokoro (a title given to a go or shogi master) and Sansa originally had both the go and shogi master titles; however, the Shogidokoro (a title given to a shogi master) was separated in 1612.
徳川家康は碁、将棋を愛好し、碁将棋所を設け、最初は両方とも算砂が持っていたが、その後1612年（慶長17年）将棋所は独立。