Endgame Strengthening - Fundamentals
This is a Japanese Go book about the endgame by Terayama Rei.
Automatic translation from https://www.nihonkiin.or.jp/publishing/books/yosenokyokasho.html summarized:
"The book is a collection of problem, which aim at acquire practical endgame skills. Using the 9x9 board he lays out games just before they end. There are 100 problems, Black to play and win the game.
Most of the moves are simple, such as a hanetsugi on the first line, de, osae, atetsuki?, and tsugi. Therefore you can concentrate on thinking about the size and the procedure. It also comes with hints and is easy to solve."