Rook

Rook : The tank. Moves in straight lines—horizontally or vertically. The rook is a major chess piece representing a fortified tower or chariot. Each player starts with two rooks. Valued at 5 points, they move horizontally or vertically any number of unobstructed squares. Rooks are most powerful on open files, on the 7th rank, or placed behind passed pawns.

Rook Basics:
Starting Position: White rooks begin on squares a1 and h1, and Black rooks begin on a8 and h8.
Movement: A rook can slide forward, backward, left, or right as far as the board permits, provided there are no other pieces in its path. It cannot jump over other pieces.
Capturing: It captures opposing pieces by landing directly on the square they occupy.

Strategy :
Castling: The rook is actively involved in castling, a special move used to secure the king and develop the rook simultaneously.
Open Files: Rooks thrive on open files (columns without pawns) because they can control long lines of sight and penetrate into the opponent's territory.
The Seventh Rank: Getting a rook to the 7th rank (the 2nd rank from the opponent's perspective) allows it to attack the base of the enemy pawns and trap the opposing king.

Common Endgames :
Behind Passed Pawns: In endgames, a fundamental rule is to place your rook behind your advancing passed pawns (or the opponent's) to support their push down the board.
Checkmates: A single rook and king can successfully force a checkmate against a lone king.