Rook and king checkmate

Hi, I wanted to know how to checkmate with a rook and a king. I kinda forgot. I knew it a couple weeks ago.

When your Kings are in opposition (they are facing each other with one square between them) and you check with the Rook from your opponent King's "side", your opponent has no other choice but to retreat. If he's on the last rank/file of the board and can't retreat anymore, it's a checkmate.

Here's an example. The most difficult part of this is how to force the opponent go in to opposition so that you can check him safely, that is without losing your Rook.

Once you get him down to the back rank, the job is almost over (or it should be). So:

63... Rd7 64 Kb8 Kc6 65 Kc8 Rd6 66 Kb8 Rd8+ 67 Ka7 Rc8 68 Ka6 Ra8#

#2

10... Rf6 is quicker

Silman's Complete Endgame Course explains this in detail.

The thing is that what if he keeps moving the king left and right @ProposeBurgers?

@#6 In this case you need to make a waiting move with the rook.

@Meet_Raval1 what @pointlesswindows said

In the example below, if 4. Ke8, then 4. ... Rg8#

I suggest you use lichess pratice lichess.org/practice/checkmates/piece-checkmates-i/BJy6fEDf/VeKiltmx

@MrPushwood Yes it's quicker but it doesn't illustrate the idea.