Instructional Game

Black fractures whites pawn structure, gaining compensation for being down the exchange, rook for knight.

The remaining knight becomes very powerful in the later middle and endgame.
Event "London"]
[Site "London"]
[Date "1989.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Garry Kasparov"]
[Black "Jonathan Speelman"]
[ECO "A81"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

YouTube

Jonathan Speelman rocks. His commentary on other GMs games is entertaining. He always sounds like he doesn't quite know what he's talking about or is unsure, and is always praising those blasted computers.
Meanwhile he does have a great chess mind.

u coulda recap the horse

^ if you recapture the knight Rxf4 then black can force an exchange of rooks,
Re4

after the rook exchange the black king is closer to the white pawn and can capture it, winning the endgame as black has 2 pawns rushing down and the lone white king can't stop them.