Hanging Piece Puzzle (Rated 958): Win Material — Tactic
This middlegame puzzle illustrates the danger of leaving a valuable piece undefended. White appears to have active pieces and a substantial material edge, but one rook has been placed on a vulnerable square. Black can exploit that tactical oversight immediately, turning an inaccurate move into a direct material gain. The key lesson is that activity and initiative do not excuse basic tactical errors: every move must account for captures, especially attacks on loose or insufficiently protected pieces.