Britannica AI Icon

rook

chess
Also known as: castle

Quick Summary

The rook is one of the six types of pieces in chess. Each player starts with two rooks, which are positioned on the corner squares of the board.1

Rooks can move any number of unoccupied squares horizontally or vertically along their rank or file. They were formerly also known as castles. In some chess variants, like freestyle chess, the rook's starting position can differ, but its castling movement remains consistent with regular chess. The term "rook" itself has origins in Arabic and Persian words.123

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.