Slav Defense Intermediate Puzzle (Rated 678): Win a Decisive Material Gain — Slav Defense

This middlegame puzzle comes from the Slav Defense and shows how king safety can outweigh raw material. White’s pieces are coordinated around the enemy king, and the key idea is to exploit tactical pressure on the kingside while the black king remains uncastled. The position features a skewer-like alignment and a discovered attack motif, so the winning idea is not a quiet improving move but a forcing sequence that opens lines and wins material with tempo.