Four Knights Game Halloween Gambit Discovered Attack Puzzle (Rated 970): Win Material — Discovered Attack

This middlegame puzzle is a classic example of a discovered attack combined with a forcing tactical sequence. White’s active rook and bishops coordinate against a pinned defender, creating a position where one piece can step aside to expose a stronger line of attack. The key idea is that the apparent sacrifice is not the point; it is the clearance that unlocks a major tactical gain. Once the king is forced to respond, the open file becomes decisive and material falls quickly.