Complex Rook Endgames: Rook Activity

Rook endgames tend to be very common because Rook is usually kept in reserve and not traded during the opening and middlegame.

In Rook endgames it's crucial to find a way to put Rook in active position. Deciding when to activate Rook and how to do it (sometimes even sacrificing some strategic points or even material), is the most challenging part of Rook endgames.