Honinbo Shusaku
Shusaku June 6, 1829 September 3, 1862 was a Japanese professional Go player from the 19th century. He is known for his undefeated streak of 19games during the annual castle games thirtygame match with Ota Yuzo lead innovator of the eponymous Shusaku opening for Black postdeath ascension to one of the Go Sages and next to his teacher, Honinbo Shuwa, considered to have been the strongest player from 18478 to his death in 1862. He was nicknamed Invincible Shusaku because of his castle games performance.
He was born on the island of Innoshima near the town of Onomichi, Hiroshima Prefecture, Japan to a merchant, Kuwabara Wazo. Asano Tadahiro, lord of Mihara Castle, became his patron after playing a game with him, and allowed him to study under Lord Asanos personal trainer, the priest Hoshin, a player of professional level.
Source: Wikipedia