Peter Svidler (White) Puzzle: Mate — Back Rank

A back rank mate occurs when a king is trapped behind its own pawn shield and an attacking piece delivers check along the home rank. The key strategic idea is restricted king mobility: friendly pawns block escape squares while the attacker controls the remaining exits. In this position, Black’s king safety is the decisive weakness. White’s active queen and rook coordinate around the back rank, creating a forcing mating pattern rather than a material-winning endgame.