The main part of the book is divided into exercises and solutions, with 110 positions taken from double fianchetto games. I have divided the exercises into chapters, with each chapter featuring games by players who have deployed the double fianchetto quite often. You will find a lot of typical motifs used by these players. In this part you will also detect a few examples of play by the legendary German IM Podzielny, who died in the summer of 2019 at the legendary chess age of 64. My heart urged me to write something about him, because I knew him for a long time and he was a very special person. The difficulty level ranges from very easy through to very tough, but I won’t give points for the solutions. The ideas vary from tactics to important strategic subtleties. The reader decides how honestly he or she tries to solve these exercises. It is also not necessary to solve all of them, but it is definitely important to think about these positions and take your time. The reader should gain an impression of the many ideas and structures which are possible in the double fianchetto positions. Sometimes you will find the complete games in the solutions section, but sometimes you will only fi nd the most important moves up to a certain point, because the rest would be irrelevant to the topic. In some solutions I also give the first moves, because I guess that it would be very interesting to know which move order was played to reach the positions in question. GM Daniel Hausrath, October 2021