The author addresses the most frequent questions that arise in all the three aspects of a modern chess game (material, pawn structure - space, and dynamics). The core of the book consists of 49 deeply annotated games played by the elite players. On top of that, there are 127 practical tests, so the material presented as a whole may be extremely useful to a wide audience. Of course, chess trainers and will find many of the games and test positions adequate for their chess lectures.