Saginomiya joseki

In shogi, the Saginomiya joseki (鷺宮定跡 "saginomiya jōseki") is a joseki for a Left Silver-5g Rapid Attack (Static Rook) vs Fourth File Rook (Ranging Rook) opening. It was originally conceived by Teruichi Aono between 1975 and 1985, and further popularized in title matches by Kunio Yonenaga. The name "Saginomiya" comes from the fact that both Aono and Yonenaga lived in the Saginomiya District of Nakano in Tokyo.