--- title: "Pillsbury's mate in chess" url: "https://georgelichess.com/glossary/pillsburys-mate.md" canonical_url: "https://georgelichess.com/glossary/pillsburys-mate" last_updated: "2026-11-07" type: "reference" summary: "Pillsbury's mate is a checkmate in which a rook checks along the g-file while a bishop on the long diagonal covers g7 and h8." related: ["https://georgelichess.com/glossary/back-rank-mate.md", "https://georgelichess.com/glossary/mating-attack.md", "https://georgelichess.com/glossary/mating-net.md", "https://georgelichess.com/glossary/battery.md", "https://georgelichess.com/glossary/morphys-mate.md", "https://georgelichess.com/glossary/category/tactics.md", "https://georgelichess.com/glossary.md"] --- # Pillsbury's mate in chess > **For AI agents:** the complete index of GeorgeLiChess pages is [llms.txt](https://georgelichess.com/llms.txt). Every page is also served as markdown at its URL plus .md. Pillsbury's mate is a checkmate in which a rook checks along the g-file while a bishop on the long diagonal covers g7 and h8. Pillsbury's mate is a checkmate in which a rook checks along the g-file while a bishop on the long diagonal covers g7 and h8, leaving a king on g8 hemmed in by its own pieces. Two pieces cooperate here. The rook delivers check from the g-file, and a [bishop](https://georgelichess.com/glossary/bishop.md) placed on the long [diagonal](https://georgelichess.com/glossary/diagonal.md), usually on b2, covers g7 and h8 so the king cannot step into either corner [square](https://georgelichess.com/glossary/square.md). The defender's own pawns on f7 and h7 and a piece on f8 shut the remaining doors. Such a setup often appears after a [fianchetto](https://georgelichess.com/glossary/fianchetto.md) bishop on b2 has been aimed at the kingside, and the rook has come across the third rank. The central requirement is a clear long diagonal, so any piece that stands on c3, d4, e5 or f6 spoils it. The rook must also arrive with check on a file where no defender can interpose. When you attack, look for the moment the defender's pieces choke their own king and then check which [rook lift](https://georgelichess.com/glossary/rook-lift.md) lands on the g-file. When you defend, break the diagonal by placing a piece on it, or give the king air by pushing a pawn so that it is not boxed in. A frequent slip is to overlook an interposition: a rook check along an [open file](https://georgelichess.com/glossary/open-file.md) can be blocked by a piece reaching the file, so confirm that nothing of the defender's can step in before you play it. ## Example position White plays Rg3#. The bishop on b2 covers g7 and h8 along the long diagonal, the rook checks along the open g-file, and Black's rook and pawns block every other square. Position (FEN): `5rk1/5p1p/8/8/8/3R4/1B6/6K1 w - - 0 1` A neighboring idea is [Morphy's mate](https://georgelichess.com/glossary/morphys-mate.md). Morphy's mate is a checkmate against a king in the corner in which a bishop gives check along the long diagonal while a rook controls the neighboring file, and the king's own pawn blocks the last flight square. Compare it with [Back rank mate](https://georgelichess.com/glossary/back-rank-mate.md). A back rank mate is a checkmate on a player's first or eighth rank, typically by a rook or queen, delivered when the king's own pawns leave it no square to step to. Knowing "Pillsbury's mate" helps most once you can spot it in a real game. A [first lesson](https://georgelichess.com/book/first-lesson.md) with George Li starts from your own games and finds the tactics you keep missing. ## Related terms - [Back rank mate](https://georgelichess.com/glossary/back-rank-mate.md) - [Mating attack](https://georgelichess.com/glossary/mating-attack.md) - [Mating net](https://georgelichess.com/glossary/mating-net.md) - [Battery](https://georgelichess.com/glossary/battery.md) - [Morphy's mate](https://georgelichess.com/glossary/morphys-mate.md) ## Guides that go further - [How to choose a chess coach](https://georgelichess.com/how-to-choose-a-chess-coach.md): What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid. - [How much does chess coaching cost?](https://georgelichess.com/chess-coaching-cost.md): Published rates for private, group and subscription chess coaching, with the source and the date of each. - [The first lesson](https://georgelichess.com/book/first-lesson.md): A game review, a read on your level and a written study plan from George Li. [Book your first lesson](https://georgelichess.com/book.md) and George Li reviews your games and builds a study plan around them. Questions about lessons: write to hello@georgelichess.com. ## Related - [Back rank mate in chess](https://georgelichess.com/glossary/back-rank-mate.md) - [Mating attack in chess](https://georgelichess.com/glossary/mating-attack.md) - [Mating net in chess](https://georgelichess.com/glossary/mating-net.md) - [Battery in chess](https://georgelichess.com/glossary/battery.md) - [Morphy's mate in chess](https://georgelichess.com/glossary/morphys-mate.md) - [Chess terms: Tactics and combinations](https://georgelichess.com/glossary/category/tactics.md) - [Chess terms glossary: plain definitions](https://georgelichess.com/glossary.md)