Marienbad System Puzzle (Rated 1149): Win Material — Discovered Attack
This middlegame puzzle is a classic example of a discovered attack combined with king safety pressure. One side’s pieces are lined up so that a forcing capture can open a line and expose a valuable target behind it. The key idea is not just winning a pawn, but using the opponent’s king placement and loose pieces to create a decisive material gain. In classical chess, these tactical shots often arise when a pinned piece and an overloaded defender meet at the same time.