castling
- n interchanging the positions of the king and a rook
- v move the king two squares toward a rook and in the same move the rook to the square next past the king
- Sniffing and sipping hot tea while he fought off a cold, Bobby began the second game by boldly launching an early attack without first castling his king into a protected corner .
- The 16th black move, castling behind the unusual pawn formation, was a startling stroke.