Ladder mate (two rooks)
Two rooks take turns giving check, marching the king to the edge where it runs out of room.
The ladder mate, also called the lawnmower, uses two rooks to drive the enemy king step by step to the edge of the board. One rook cuts off the king's retreat on one rank while the other gives check, and the process repeats until the board runs out. The king climbs up the board like a ladder - and then falls off the edge.
This is the most important endgame technique to practise when you have two rooks versus a bare king. The key principle: keep your rooks far enough apart so the king cannot capture one as it flees. If the king threatens a rook, simply slide that rook back two ranks and continue. With correct play, checkmate arrives quickly from any position.
Rh8# - the ladder reaches the edge
White's rook on h8 delivers checkmate along rank 8. The black king on a8 cannot escape to a7 because the rook on b6 covers the entire b-file, and the white king on c6 covers b7. All escape squares are sealed. The king has been driven to the corner by the two-rook ladder.
The ladder in action - rooks working together
Black's king sits on d5 with both white rooks ready to start the ladder. After the king moves, one rook will check while the other cuts off the next rank. The two rooks alternate roles - one checks while the other restricts - and the king gets pushed steadily to the edge.
Key chess terms
Related mating patterns
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