|Full name||Hon'inbō Dōetsu|
|Died||1727 (aged 91)
Dōetsu challenged Yasui Sanchi to a long match. In the end 20 games were played, out of a theoretical 60, over seven years starting in 1668. Under the beating-down rules (see jubango) he forced Yasui down from sen (Black in each game, for a theoretical difference of two levels) to sen-ai-sen (Black-White-Black).
He was also active in oshirogo from 1660, for 15 years. In 1677 he stepped down as Honinbo head, handing over to Dōsaku. He did however still meet an official requirement to play oshirogo; he was given a personal allowance of 20 koku of rice. He is given the credit for establishing standard dimensions for go equipment.
- GoGod Encyclopedia
- Go Monthly Review 1963/5, p.55
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