ほんいんぼうせん 本因坊戦 LinksSentence search for 本因坊戦Sentence search for ほんいんぼうせんKanji details for 本, 因, 坊 and 戦Edit in JMdict Noun1. Hon'inbō Tournament (annual professional go competition); Honinbo Tournament Discussions Log in to talk about this word.