Semi Slav Defense Main Line Puzzle (Rated 1149): Win Material — Discovered Attack
This middlegame puzzle shows how a tactical shot can turn piece activity into a decisive material gain. White’s active pieces create pressure on the kingside while a pinned defender and an overloaded queen make the position tactically fragile. The key idea is to use a forcing move that exposes a hidden attack, then simplify into a winning sequence. In classical chess, these motifs often appear when development and king safety outweigh raw material.