Anastasia Bodnaruk (Black) Puzzle: Trade — Rook Exchange

This chess endgame is decided by a tactical trade that changes the material balance immediately. White’s rook is under pressure and aligned with the king, so passive defense is unlikely to solve the problem. Instead, the key is to exchange on the contested file first, forcing Black’s knight to recapture. That recapture places the knight on a square where White can eliminate it, converting a difficult pin and skewer into a favorable sequence of exchanges.