Castling is a special move that you do with The rook (Castle) and king.You go two squares Left or right depending King or queenside (kingside right queenside left).Kingside you go left,queenside right. Rook goes right beside the king beside the open file, go to castling for more.
Left or right depending King or queenside (kingside right queenside left).Kingside you go left,queenside right. Rook goes right beside the king beside the open file, go to castling for more.