Josaku

Honinbo Josaku (本因坊 丈策, 1801–1847) was the 13th head of the Honinbo school.

He compiled a book collecting 65 games by past Honinbo house players, titled Kokon Shuhei (古今衆枰) in 1843. Available at the Japanese National Diet Library: vol.1 (ten), vol.2 (chi), vol.3 (jin).