Tests for qualified chess players. Increase your rating!

The famous grandmaster, writer and coach Sarkhan Guliev, together with his brother international master and coach Fide Logman Guliyev, wrote an interesting and meaningful textbook in the style of classical work by V. Gort and V. Yansa "along with grandmasters".
The reader is invited to find the best move in completely diverse positions affecting the entire spectrum of strategic and tactical arsenal of a modern chess player.
In every example, it is possible to count the correct solution to the end, but any of them will help to teach to find combinations in Mittelshpile, the right plan is in the endglass, as well as avoid standard errors.
glasses are charged for the correct solutions. For the convenience of the solution, they are placed at the end of the book, are dismantled in detail and equipped with additional diagrams