Blackmar Diemer Gambit Puzzle (Rated 927): Win Material — Discovered Attack

This Blackmar-Diemer Gambit puzzle shows a classic middlegame tactical shot built around king safety and piece activity. White’s bishops and queen coordinate against the black king and the back rank, creating a forcing sequence that wins material rather than aiming for a direct mate. The key idea is a discovered attack: one piece is sacrificed or moved to open a line, exposing a more valuable target and forcing a favorable simplification into a winning rook ending.