8x8+Board

Such a board representation is often used redundantly in bitboard programs to answer the question which piece (if any) resides on a square efficiently. It has to deal with square mapping accordantly. || toc =Alternatives= As lone board representation, the 8x8 board has some efficiency issues with move generation related to off the board test. Therefor more common are approaches dealing with that, that is 10x12 board with surrounding ranks and files, and Vector Attacks with its cheap test and unique square difference property with respect to distance and direction. In //Games Playing with Computers//, 1972, Alex Bell introduced an array of 65 squares, where the purpose of square 65 (always empty) is to detect pawns capturing outside the board by a table driven move generator.
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 * [[image:BBUniverse.jpg width="320" height="320" link="Bibob"]] ||~  || The **8x8 Board** as basic square-centric board representation is either a two-dimensional array of bytes (or integers), containing piece and empty square codes, indexed by file and rank index, or more commonly a one-dimensional array indexed by a square in a 0..63 range which combines rank or file indices in three consecutive bits each.
 * 8x8 board with LERF square indices ||~  ||^   ||

=See also= > Square Mapping Considerations
 * 0x88
 * 10x12 Board
 * Array of Nibbles
 * Bitboards
 * Vector Attacks

=Publications=
 * Claude Shannon (**1949**). //[|Programming a Computer for Playing Chess]//. [|pdf] from The Computer History Museum
 * Alex Bell (**1972**). //[|Games Playing with Computers]//. [|Allen & Unwin], ISBN-13: 978-0080212227

=Forum Posts=
 * [|Re: Ferret/Gerbil question] by Bruce Moreland, CCC, September 21, 2001 » Ferret, Gerbil, 0x88

=External Links= > Cast : [|Jean Arp], [|Paul Bowles], [|Ceal Bryson], [|Alexander Calder], [|Jean Cocteau], [|Willem de Vogel], Dorothea Tanning > Max Ernst, [|Richard Huelsenbeck], [|Frederick Kiesler], [|Julien Lary], [|Julien Levy], [|Jaqueline Matisse], [|Eugene Pellegrini], Man Ray, [|Yves Tanguy] > media type="youtube" key="gMIBbesWJDA"
 * [|Chapter 3: Board Games - 3.1 CHESS] from Alex Bell (**1972**). //[|Games Playing with Computers]//. [|Allen & Unwin], ISBN-13: 978-0080212227
 * [|8 x 8: A Chess Sonata in 8 Movements] (1957) directed by [|Hans Richter],  Marcel Duchamp and [|Jean Cocteau], [|YouTube] Video

=References= =What links here?= include page="8x8 Board" component="backlinks" limit="80"
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