Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A very good book

Aagard and Lund do a greatv job in teaching the Tarrasch defense.This book features a good selection of games, as well, as good highlighting of typical strategic and tactical themes.Anyone from C player to Master will benefit (I am a master).Most important, you can really feel that the authors have played the defense, and they have personal opinion on the line (this should be the rule, but lately, many MI/GMs tend to write books also on opening they have little ideas of how to handle, and the resut is something close to a database dump with little useful pointers).A good idea would be to purchase together Schiller's "A complete defense to d4", one of the best Schiller's books (since he doews play the Tarrasch as Black).