Specialist braille codes explained  The literary braille code is
the most produced type of braille - books, magazines, reports,
letters and more are produced in this format. However, only 63
unique combinations can be made with the 6-dots of a braille
cell. That's why specialist braille codes have been developed to
represent print characters such as computer and scientific
notation.  These are the specialist braille codes used in the
UK:   Many blind and partially sighted people like to play
chess.  On the chess board the black squares are slightly higher
than the white squares and the chess pieces fit into a hole in
the middle of each square. Additionally all the black pieces
have a point on the top to help distinguish between black and
white pieces.  A braille chess code has been developed to help
record the moves in a game, so that braille users can record
their own games, as well as study other people's games or enter
competitions. The code includes abbreviations for each chess
piece, different kinds of m