Bishop's Opening Berlin Defense Puzzle (Rated 905): Crush Discovered Attacks — Tactical Refutation

This middlegame puzzle shows how a discovered attack can turn a normal-looking position into a decisive tactical refutation. Black’s active pieces coordinate against the white king and the e1-rook, while White’s queen and rook appear active but are vulnerable to forcing tactics. The key idea is to use a check that also opens lines for another piece, creating immediate threats against the king and major pieces. In classical chess, these forcing motifs often outweigh static material.