Anderssen's Mate
Anderssen's Mate is a checkmate pattern in which a rook or queen checks the enemy king along an edge file or rank, supported by a friendly bishop or pawn that covers the sole flight square while the king's own pieces often block its other escapes.
- Category
- Tactics
- Also in
- Historical, Endgames
- Difficulty
- Intermediate
- Also known as
- Anderssen Mate, Anderssen's checkmate
Anderssen's Mate is a checkmate pattern in which a rook or queen checks the enemy king along an edge file or rank. A friendly bishop or pawn covers the king's only flight square off that edge, while the king's own pieces often block its remaining escapes.
The pattern occurs when the defender's king is already cramped against the side of the board. The attacking piece exploits the open file or rank to deliver check. Because the supporting unit controls the adjacent square that would allow the king to step inward, and the king cannot capture the checking piece, no legal moves remain.
The mate is named after Adolf Anderssen, whose 19th-century games frequently featured similar attacking ideas. It arises most often in endgames or late middlegames once files have opened and the defender's king has been driven to the edge.
{"v":1,"type":"board","orientation":"white","fen":"k7/8/2B5/8/8/8/R7/7K w - - 0 1","arrows":[{"from":"a2","to":"a8","color":"good"}],"highlights":[{"square":"a8","color":"focus"}],"labels":[{"square":"b7","text":"flight","color":"good"}],"alt":"White rook on a2 checks the black king on a8. The bishop on c6 covers the b7 flight square."}
In the diagram the rook checks along the a-file. The bishop prevents the king from stepping to b7, and any black pieces on b8 would further restrict escape options. The same geometry works on the h-file or on the first and eighth ranks when the supporting unit is correctly placed.
Frequently asked questions
- What is Anderssen's Mate?
- Anderssen's Mate is a checkmate pattern in which a rook or queen checks the enemy king along an edge file or rank while a friendly bishop or pawn covers the king's single flight square off the edge.
- Who is Anderssen's Mate named after?
- The pattern is named after Adolf Anderssen, the 19th-century master known for using similar attacking ideas in his games.
- When does Anderssen's Mate typically occur?
- It most often appears in the endgame or late middlegame once the defender's king has been forced to the side of the board.
- How do the king's own pieces affect Anderssen's Mate?
- The king's own pieces frequently block its remaining escape squares, making the mate even more secure.
About the reviewer
Maria didn't grow up dreaming of chess. She grew up dreaming of getting through bedtime without a meltdown, and chess just happened to be the thing that worked.