Hon'inbō Jōsaku (本因坊丈策, 1803–1847) was a Japanese professional go player and the thirteenth head of the
Hon'inbō school.
He was not in the same top-rank class over the board as either his predecessor
Jōwa or his successor
Shūwa.
References
{{DEFAULTSORT:Josaku, Honinbo
1803 births
1847 deaths
Japanese Go players