After Qxe6, White to play against a black king confined to the back rank. See if you can find the sequence that seals the game in three moves.
Puzzle: Lichess open database (CC0) · Pieces: Cburnett, Wikimedia (CC BY-SA 3.0)
See the solution explained
Qd8+ gives check to the black king and leaves only two possible replies.
Rxd8 is the forced capture of the queen by the black rook.
Rxd8+ recaptures on d8 with check, leaving the black queen just a single square to run to.
Qe8 is Black’s only legal reply to the check.
Rxe8# captures that queen and delivers checkmate to the king on g8, which has no escape from the check.
The motif to remember: a sacrifice on the back rank exploits a weakly protected king to force a corridor mate in three moves.
The back-rank mate is one of the oldest and most widely taught motifs in chess, where a rook exploits a king boxed in by its own pawns. To practise with handsome pieces, a classic Staunton chess set is a reliable choice, as is a chess board with built-in storage to keep the pieces close at hand.















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