Mating net
A mating net is a setup in which the enemy king is surrounded by attackers and its own pieces so tightly that checkmate cannot be avoided, even if the final blow is a move or two away.
The key idea is that the mate is forced before it is delivered. Every flight square is covered or blocked, and each defensive try leads to the same ending. You do not need the checkmate on the board at once; you need to see that whatever the opponent does, the net stays closed.
To build one, count the king's escape squares and ask which of your pieces watch each one. Bring in a queen or rook to cut off the squares, and let a knight or bishop guard the square where the final piece will land. Often a forcing check starts the sequence, and the only reply drags a defender into the net. To avoid being caught, give your king breathing room early, keep a defender near it, and be wary of lines where all your pieces are on the far side of the board.
Do not confuse a mating net with an ordinary attack. In a net the outcome is already forced, whatever the defender plays, while an attack can still be beaten off by accurate defense. The other trap is opening the net with a check that hands the king an escape you missed, so list the flight squares before you commit.
It sits close to Anastasia's mate. Anastasia's mate is a checkmate in which a knight and a rook trap a king on the edge, with the king's own pawn blocking its escape and the rook checking along the edge file.
Also worth reading is Arabian mate. An Arabian mate is a corner checkmate where a rook gives the check from beside the king, and a knight, a jump away from the rook, guards it and covers the one flight square the rook leaves open.
It sits close to Blackburne's mate. Blackburne's mate is a checkmate made with two bishops and a knight, where a bishop checks on h7 guarded by a knight on g5 while the other bishop on the long diagonal covers g7 and h8.
To see how often "Mating net" or a pattern like it decides your own games, book a first lesson: George Li reviews your games and writes a study plan around what he finds.
Related terms
A mating attack is a sustained assault on the enemy king, usually built from several pieces and often with sacrifices, whose aim is checkmate rather than winning material.
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.
A smothered mate is a knight checkmate against a king hemmed in by its own men: every square the king could use holds its own pieces, and a knight check cannot be blocked.
A combination is a forcing sequence of moves, usually built from sacrifices and checks, in which every move leaves the opponent few or no choices and the sequence ends in a concrete gain such as mate or material.
A trapped piece cannot reach safety: every square it might retreat to is covered, blocked or ruinous, so once it is attacked the owner will lose it for little or nothing.
A quiet move is a move that makes no capture and gives no check, yet creates a decisive threat or removes the opponent's last defense, so it is easy to overlook among more forcing moves.
Guides that go further
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?
Published rates for private, group and subscription chess coaching, with the source and the date of each.
A game review, a read on your level and a written study plan from George Li.
Want to spot this in your own games?
A first lesson starts with your games: George reviews them and builds a study plan around what he finds.