The idea behind this series is the approach that Nimzowitsch used to call “a radioactive method” – selecting a rather narrow topic, and by learning a lot about it, understand chess much better in general. This book looks at endings with rook + knight Vs. rook + knight. This material balance occurs quite frequently in tournaments, and some classical ideas and endgames have become well-known. Nonetheless, there is some lack of discussion of this topic in chess literature. The book covers both the strategic themes, and gives the reader a chance to practice their tactical skills.