Endgame
Two Rooks vs King (the ladder)
8
7
6
5
4
3
2
a1
b
c
d
e
f
g
h
White to move
Roll the king up the board with a rook 'ladder' — cut it off on one rank, check on the next, and repeat until mate.
Endgame
White to move
Roll the king up the board with a rook 'ladder' — cut it off on one rank, check on the next, and repeat until mate.