The book "Chess Tactics Workshop. Overlap. Liberation. Opening lines," which can help effectively train your tactical skills. Combination vision and calculation ability is one of the main components of a chess player's success. The book contains both positions that happened in real games, and training positions on topics: overlapping, freeing (fields, lines, etc.), opening lines. Solutions are provided at the end of each topic. The book will be useful to a chess player of any qualification.