Flank Puzzle (Rated 1736): Create a Mate Threat — Chess Puzzle with Theory & Hints

This puzzle is built around a forcing mate threat in a middlegame-like endgame where active pieces matter more than raw material. White’s queen and rook coordinate against an exposed king, while Black’s advanced pawns and active rook create counterplay. The key idea is to use a forcing check to drag the king into a worse square, then keep the attack alive with rook pressure and tactical coordination. The position rewards precise calculation and a clear sense of king safety.