Müller: Typical Queen´s Gambit Exchange Variation - Effective Middlegame TrainingIn designing this book, the author was guided by the following considerations. If you want to learn this or that opening, you can choose from dozens or even hundreds of textbooks. But what if you want to get familiar with the middlegame strategy used in positions that have emerged from exactly this or that opening? Or to put it another way: in positions that are typical for this or that opening. Of course, in every middlegame textbook there's one or