Morphy's mate
A long-range bishop rakes the long dark diagonal towards the castled king's corner, covering the g7 and h8 escapes. A rook then crashes onto the back rank with check, controlling the whole eighth rank. With the king's own f- and h-pawns blocking the front, there is no flight square – checkmate.
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How it works
Two pieces share the work. The bishop on b2 sits on the a1–h8 diagonal and covers g7 and h8, the two dark escape squares beside the king. The rook gives check along the eighth rank, covering f8, g8 and h8. The king's own pawns on f7 and h7 plug the remaining flights. Every square around the king on g8 is either occupied by a friendly pawn or guarded by the bishop or rook, so the check cannot be answered – it is mate.
How to spot it
It appears against a king on g8 whose pawns sit unmoved on f7 and h7, with no dark-squared defender to cover the long diagonal into its corner. Look for your bishop already raking that diagonal at the enemy king, then find a rook that can reach the back rank with check. If the bishop covers g7 and h8 and the king's own pawns block the front, a rook landing on the eighth rank is often instant mate. Clearing or luring away a defender of e8/f8 is the usual final preparation.
Key ideas
- The bishop covers the dark escape squares g7 and h8 from afar
- The rook delivers check and owns the whole back rank
- The king's own f7 and h7 pawns trap it in
- Two pieces, working at a distance, leave zero flight squares
- Clear the eighth rank so your rook can reach the king
Famous example
Named after Paul Morphy, the 19th-century American genius whose attacks repeatedly herded enemy kings into mating nets like this. It is one of the classic patterns catalogued in Renaud and Kahn's "The Art of the Checkmate".