Smothered mate in chess
In one of the prettiest mates in chess, a knight checks a king that cannot move because its own pieces fill every square around it.
Play through Philidor's Legacy → After the first move, every black reply is forced. Step through it one move at a time.
A smothered mate is checkmate by a knight against a king whose every escape square is occupied by its own pieces.
Philidor's Legacy: the forced sequence
The famous version is a four-move combination. The black king starts on h8, with a rook on f8 and pawns on g7 and h7; White has a knight on g5 and a queen bearing down the a2-g8 diagonal. From move two on, every black reply is the only legal move:
- 1. Nf7+: check from f7. Black's only other legal move is 1...Rxf7, which gives up the rook for the knight after 2.Qxf7, so the king goes to g8.
- 2. Nh6++: double check, from the knight on h6 and the queen on the diagonal. Only a king move can answer a double check, and h8 is the king's one free square, so it goes straight back.
- 3. Qg8+!!: the queen sacrifice. The knight on h6 guards g8, so the king cannot take, and the rook has to: Rxg8.
- 4. Nf7#: the knight mates. The king on h8 is smothered by its own rook on g8 and its own pawns on g7 and h7.
The combination works because move two is a double check. Any other knight move gives only the queen's check, which Black can block with ...Rf7. From h6 the knight also guards g8, where the queen is sacrificed next.
The setup you need
- A knight that can reach f7 (or the mirror squares f2, c7, c2) with check.
- A queen on the a2-g8 diagonal (or the matching diagonal for another corner), to give the second check and then be sacrificed next to the king.
- An enemy king boxed in by its own rook and pawns.
Why it is worth knowing
Smothered mate itself is rare. Lichess has about 25,000 puzzles that end in one, against more than 200,000 that end in a back rank mate. Its parts turn up more often on their own: a double check that forces the king to move, a sacrifice that fills an escape square, and a knight check, which cannot be blocked. This one pattern teaches all three.
Practice the smothered mate
Reading about a pattern is not the same as spotting it under time pressure. The free chess puzzles trainer serves rated positions from real games and adjusts to your level as you solve. When you get one wrong, press Analyze once the puzzle is over to open it on the analysis board and see what you missed.
Related tactics
Double check
Two checks at the same time, and the king has to move. No other answer is legal.
Back rank mate
A castled king behind three unmoved pawns has no square to step up to. A rook or queen that checks it along the back rank is mate unless something can capture the checker or block the check.
Mate in 3
Force mate in three moves against every defense. This is usually the depth where spotting a pattern stops being enough and you have to calculate each line.
Frequently asked questions
What is a smothered mate?
Checkmate delivered by a knight to a king that has no legal escape because all the surrounding squares are occupied by its own pieces.
What is Philidor's Legacy?
The classic sequence Nf7+, Nh6++, Qg8+ Rxg8, Nf7# that ends in a smothered mate. It is named after François-André Danican Philidor, but Luis Ramírez de Lucena had already printed it in his chess book of about 1497, more than two centuries before Philidor was born.
Why must the queen be sacrificed?
The square g8 has to be filled by a black piece for the mate to work. Sacrificing the queen on g8 forces the rook to take, which blocks the king's last escape square itself.