Many chess players shy away from positions with material imbalances, because they feel insecure in the face of their unclear nature. Traditional chess teaching does not spend much time on understanding such imbalances, but in this original book Esben Lund discusses one of the most common imbalances, where one player has a rook, and the other two minor pieces. The author begins with basics, covering theoretical foundations and basic endgames and then moves on to deep studies of two main lines from the Catalan Opening and the Scotch Opening. Neither of these lines has been studied in such depth before. Lund's lucid explanations carry the reader effortlessly through the book, with the reader's understanding increasing at the same pace as the complexity of the chess.