Career
Yamashita adopted the name Honinbo Dowa after winning his first Honinbo title in 2010. A student of Yasuro Kikuchi, Yamashita turned professional in 1993. Yamashita reached the challenger finals of the Tengen in 1999.
His first major title came in 2000 when he defeated Honorary Gosei Koichi Kobayashi in the finals of the 25th Gosei.