* Follow the recent games of top grandmasters
* Improve your game
* Study combinations any time and anywhere
* Enjoy a collection of annotated puzzles that you have not seen in any other tactics books
* Maintain regular practice by solving several puzzles every day
For the purpose of these collections, I used Mikhail Botvinnik's definition of a combination, which defines it as "a forced maneuver or maneuvers combined with a sacrifice, as a result of which the active side gains an objective advantage." The puzzles have been carefully checked to ensure the correctness and uniqueness of solutions, so the reader can be certain that there is only one winning continuation in each position.