Petrov's Defense Puzzle (Rated 984): Win Material — Discovered Attack
This middlegame puzzle shows a classic discovered attack pattern where one move opens a line and creates immediate tactical pressure on a key target. The position is balanced in material, but Black’s active bishop and queen coordination create a decisive tactical edge. The idea is not a flashy mating net, but a forcing sequence that wins material by exploiting an undefended queen and a vulnerable king-side structure. Recognizing these hidden lines is a major skill in classical chess and practical game review.