This is one of the finest opening books I have read. First a warning. The Pirc defence is not for the novice. The defence is complex, subtle, fluid and requires a high degree of positional understanding and defensive skill. It is one of the most complex responses to 1. e4 that Black can play. From this perspective it is amazing that the authors have written such a lucid book. Lev Alburt's didactic approach is enhanced by Alex Chernin's specialist knowledge. The end product is a superb book. I have read hundreds of opening books, but this ranks as one of the best, if not THE best. You will understand the Pirc defence after reading this book. While not every variation is covered, most are covered more than enough for the average club hacker. If you are below FIDE 2200 you will benefit from this book. However, having said that, I am not convinced that the class C to low B player should adopt this opening. But, if you like complex positions with plenty of room for originality and fluctuating pawn structures... go for it. You wont get a better guide than this book.