Every Russian Schoolboy Knows: Exchange Sacrifice in the Endgame - Part 1

Opening: B02, E11:

Player(s): Dukhovny, Yermolinsky, Chandra, Friedel

Exchange sacrifice is a powerful tool that has many uses in different stages of the game. Pertaining to the endgame it's most often used to stifle the opponent's initiative and maybe viewed primarily as a defensive resource. However, in many cases it also allows to fight for an advantage. How can a less effective piece compete against a more powerful one? Obviously, some other factors need to be present. It begins with a pawn advantage, both quantitative and qualitative. Usually, at least one extra pawn is required to provide adequate compensation, and you'd probably need at least two extra pawns to play for a win. Your pawn structure is better be solid to withstand attacks from enemy rook(s). It is important to keep the base of your pawn chain safely protected. Another factor is the presence of other pieces. The advantage of Rook vs minor piece is most visible in its pure form, so when considering a sacrifice you need to make sure you'll be able to keep your last rook on the board. 
Video 1 begins with a memorable game from the days of my youth. The initial purpose of the sacrifice was to prevent his second rook from joining the attack against the base of my pawn chain. Black managed to win the second pawn and obtain a favorable R+B+5p vs 2R+3p endgame with the pawns on the same side of the board. Further transition after a rook trade netted me another pawn. Unfortunately the technical stage was marred with errors.

Teacher's library (718) B02 E11 Dukhovny Yermolinsky Chandra Friedel endgame