Ieharu developed new terms for Shogi (For instance, he called the squares of a Shogi board from the top on the right as 'I ro ha ni ho he to chi ri nu ru wo') and in his later years he wrote a book called 'Shochikokaku.'
家治は新しい将棋用語を考案し（例えば右上から「いろはにほへとちりぬるを」などと呼んだ）、「象棋攻格」という本も晩年著している。