Since then, the chain of solving an idai and presenting a new one in a new edition started (the succession of idai), and as such, the mathematical problems in wasan became increasingly technical and complicated beyond practical needs.
これ以降、先に出された遺題を解き新たな遺題を出すという連鎖（遺題継承）が始まり、和算で扱われる問題は急速に実用の必要を超え、技巧化・複雑化した。