This is an instructional book on go.

Takagi discusses making the right choice of forcing moves. He discusses the principles in 12 pages, making up chapter 1. The next two chapters constitute the bulk of the book, and goes into making use of these principles. These chapters throw in other concepts in sections, all making heavy use of examples from professional play.

I didn't see much value in the distinction between chapters 2 and 3, but the book is very good and presents ideas clearly. The book is targeted at more advanced players.