Barnes Opening Hammerschlag Puzzle (Rated 1066): Win Material — Hanging Piece Tactic
This middlegame puzzle is built around a hanging piece and a king that is stuck in the center. White has active pieces, but one key defender is overloaded and the tactical shot wins material by forcing the king into the open. The idea is not a flashy mating attack; it is a clean winning combination that uses a check, a capture, and a simplification to convert activity into a decisive material edge.