Diagram
1.Ra5
Identifying the a6 weakness, and fixing it.
1...Kc6
Two attacks on a6, two defense. Black rushes over a third defender to free a rook
2.Kg3
Threatening to infiltrate with Kf4-e5
2...Kb7
To activate the Ra8
3.Rf1
Taking the f-file
3...Kc6
Expecting Rf5, defending the d-pawn
4.Rf5
Re7
Idea Re6 and Kb7, to activate the Ra8
5.h4
The Ra5 may join the game via a1-f1, but black must first cope with the threat of h5-h5 opening the Rf6 entry square.
5...Raa7
6.h5
Idea h6
6...Re6
7.Rf8
Taking the Rf8 entry square, wit he idea of Rb8-b6+
7...g6
Hoping for counter-play
8.h6
g5
Diagram idea Rxh6
9.Rb8
Coach's third law. Sometimes the best way to respond to a threat is with a bigger threat (here Rb6 and Rxb5)
9...Kc7
10.Rbxb5
axb5 Rxh7 +-
10...Rxh6
11.Ra4
Idea Rba5 and b5
11...Rf6
12.Rba5
Two attacks on the backward a6-pawn
12...Kc8
13.Kg4
Fixing the g-pawn
13...h6
14.Ra2
threat b5 ("then and only then attack the weakness with a pawn!")
14...Raf7
15.Rxa6
The queenside pawns will easily decide the game 1-0