By Lewis Carroll
Published: 1871
Episode: Through the Looking Glass
Reference: Title of episode and reference to the the Looking Glass Station.
Outline
Through the Looking-Glass, and What Alice Found There ( 1871) is a work of children's literatureby Lewis Carroll (Charles Lutwidge Dodgson), generally categorized as literary nonsense. It is the sequel to Alice's Adventures in Wonderland, although it makes no reference to its events. In it, there are many mirror themes, including opposites, time running backwards, and so on.
Whereas the first book has the deck of cards as a theme, this book is loosely based on a game of chess, played on a giant chessboard with fields for squares. Most main characters met in the story are represented by a chess piece, with Alice herself being a pawn. However, the chess game described cannot be carried out legally due to a move where white doesn't move out of check (a list of moves is included - note that a young child might make this error due to inexperience). The looking-glass world is divided into sections by brooks, with the crossing of each brook usually signifying a notable change in the scene and action of the story: the brooks represent the divisions between squares on the chessboard, and Alice's crossing of them signifies advancing of her piece one square. The sequence of moves (white and red) is not always followed, which goes along with the book's mirror image reversal theme as noted by mathematician and author Martin Gardner
More info: Wiki Entry, Amazon