Chess checkmate patterns
What Is the Ladder Mate in Chess?
The ladder mate, also called the lawnmower mate, is a checkmate technique with two heavy pieces. One rook cuts off a rank or file, the other gives check on the next one, and they take turns stepping forward until the king is mated on the edge.
Example
1. Rg5+ Kc6 2. Rh6+ Kb7 3. Rg7+ Kb8 4. Rh8#
The rooks take turns checking. Each check pushes the king back one rank while the other rook holds the rank behind it. On the edge, Rh8 is mate because the rook on g7 covers the seventh rank.
How the ladder works
One rook controls a full rank, so the king cannot cross it. The second rook gives check on the next rank, so the king has to step back. Now the first rook jumps over to check on the following rank, while the second holds the line. The rooks climb like the rungs of a ladder until the king reaches the edge, and the last check is mate.
The same method works with a queen and a rook, or two queens. It works along files too, pushing the king to the a-file or h-file.
The common pitfall
The ladder fails if the king can attack a rook. When the defending king walks toward your rooks, as it can on the way, one of them may be next to it and unprotected. Do not give check then. Instead, move the threatened rook far away along its own rank, to the opposite side of the board, and continue the ladder from there.
Also watch for stalemate when the opponent has nothing else to move. If the king has no legal move and you are not giving check, the game is drawn.
When it applies
Any time you have two rooks, a rook and a queen, or two queens against a lone king or a king with few pieces, the ladder is the fastest reliable plan. You do not need your own king, which is why it is often the first mating technique beginners learn.
Common questions
Why is it called the lawnmower mate?
The rooks move back and forth across the board like a lawnmower working in rows, pushing the king one rank at a time toward the edge.
Can one rook mate the same way?
No. A lone rook needs help from its own king to force mate, because it cannot both cut off the king and give check. The ladder needs two heavy pieces.
Keep learning
Find these moments in your own games.
Paste a game into the free analyzer to find the moves that cost you, with each mistake explained in plain English. Three analyses are free, with no email or card.
Analyze a game free →Practice with a coach beside you.
Play a human-like opponent at your level while the coach explains your moves as you go. The first coached game is free.
Play a free coached game →