1.Ra4+
[1.Rh5
Kd3
2.Ra4
Ke2
3.Ra3
Kd2
4.Rh2+
Kd1
(4...Kc1
5.Raa2
Kd1
6.Rh1#
) 5.Kb2
Ke1
6.Ra1#
]
1...Kd5
2.Rh5+
Notice the way these two rooks combine with each other to force the Black king to the edge or backrank!
2...Kc6
3.Ra6+
Kb7
Attacking the rook diagonally!
4.Rg6
Running far away, but notice that it does not come in the way of the other rook.
4...Kc7
A long way to go!
5.Rh7+
Kb8
6.Rg8#
Checkmate! 1-0