Editing Castling (section)

==Notation==
Both [[Algebraic notation (chess)|algebraic notation]] and [[descriptive notation]] indicate kingside castling as 0-0 and queenside castling as 0-0-0 (using the digit zero). [[Portable Game Notation]] and some publications use O-O for kingside castling and O-O-O for queenside castling (using the letter O) instead. [[ICCF numeric notation]] indicates castling based on the starting and ending squares of the king; thus, castling kingside is written as 5171 for White and 5878 for Black, and castling queenside is written as 5131 for White and 5838 for Black.