These Tactical Problems Can Strengthen Chess Skills: rating 1400-2000

This is a chess tactics book for amateur-level players with rating 1400-2000. There are 81 positions in the book and each position is about a tactical problem. Each position has a diagram and an answer. The answers are at the end of the book. Study the diagram and then try to solve it. Check your answers with those given at the end of the book. Arrange the position on a physical chessboard if necessary. You can buy this book in Paperback or eBook format.
This book does not deal with complete games. It is a tactics book. It is not organized progressively (the tactical problems are not ordered according to difficulty). The tactical problems provide practice, bringing together interesting positions from actual games played by human beings. The explanations given in the Answers section are simple and short. This book can be used by chess players working alone.