The best chess sketches have a huge aesthetic impact and are remembered for a long time, so solving or even just analyzing a sketch is an effective method of studying the strategic and tactical elements of the game. The central chapter of the book is "Study Terms and Themes," in the other two the author shares his own experience of compiling and solving. In conclusion, 72 studies on 12 of the most popular topics are proposed for independent solution, such as dominance, fortress and struggle with it, tactical strikes and combinations, etc.