Grunfeld Defense Russian Variation Puzzle (Rated 1135): Win Material — Discovered Check

This middlegame puzzle is built around a forcing discovered check that also creates a double-check feel: one piece moves with tempo, uncovering a direct attack on the king while simultaneously hitting a key defender. The position is tactically loaded because White’s active pieces dominate the king zone, and Black’s loose bishop can be exploited. In positions like this, the best move is often not the most obvious capture, but the one that opens a line and forces the opponent’s king into a worse square.