Editing Chessboard (section)

== Variant boards ==
{{See also|Chess variant}}
Variant chessboard shapes and sizes go back to the [[Persian people|Persian]] origins of the game in the 10th century, when the book ''Muraj adh-dhahab'' (Board of the Gods) described six different variants of chess, including [[Circular chess|circular]] and [[cylinder chess]].<ref>{{Cite web|url=http://www.geocities.com/SiliconValley/Lab/7378/oldtexts.htm|title=Earliest books of chess|archive-url=https://web.archive.org/web/20120121202800/http://www.geocities.com/SiliconValley/Lab/7378/oldtexts.htm|archive-date=January 21, 2012|url-status=dead|access-date=October 24, 2010}}</ref> Due to the widespread creation of new variants, a wide variety of sizes can be found. [[Hexagonal chess#Gliński's hexagonal chess|Gliński's hexagonal chess]] utilises a board with 91 hexagonal spaces of three different colours. One innovation of the 13th century was the [[Cylinder|cylindrical]] board for use in cylinder chess.<ref>Hooper & Whyld 1992, p. 100.</ref>

The board used for the Persian [[Tamerlane chess]] is one of the first recorded variant chessboards, with eleven columns by ten rows along with two citadels. Each player has a citadel to the right of their second rank, which may be occupied by the opponent's [[King (chess)|king]], in which case that opponent may declare a [[Draw (chess)|draw]].<ref name=":0">{{Cite web|url=http://history.chess.free.fr/tamerlane.htm|title=Tamerlane Chess|last=Cazaux|first=Jean-Louis|access-date=July 5, 2018}}</ref> In 1617, [[Pietro Carrera]] proposed a variant that received his name, Carrera's Chess, with a 10×8 board, later used in other variants such as [[Capablanca chess]] and Gothic Chess. Other sizes, with ten rows by ten columns, are used in [[Omega Chess]] and [[Grand Chess]]; Omega Chess has four additional squares, one in each corner of the board. [[Los Alamos chess]] uses a smaller 6×6 board.<ref>{{Cite web|url=http://www.chessvariants.com/historic.dir/carrera.html|title=Carrera's Chess|access-date=July 6, 2018}}</ref>

Japanese [[shogi]] uses a board with nine columns by nine rows. The board of Chinese [[xianqi]] consists of nine columns by ten rows; here, the pieces are placed on the intersections of the lines that divide the squares, rather than within the squares themselves.<ref>Hooper & Whyld 1992, p. 369.</ref> Each player has a 3×3 palace in the central three columns and the closest three rows, within which the player's general and advisors must stay. Between the central two rows is a river that the elephant cannot cross and past which the soldier increases in strength.<ref>Hooper & Whyld 1992, p. 78.</ref><ref>{{Cite web|url=https://www.chess.com/article/view/origins-of-chess|title=Origins of chess|date=11 December 2008 |access-date=July 6, 2018}}</ref> A similar board without a river is used in Korean [[janggi]].

[[File:Bughouse game.jpg|thumb|150px|left|Chessboards during a match of [[Bughouse chess|Bughouse]]]]
[[File:Raumschach.JPG|thumb|150px|right|Spatial position of the boards in Raumschach]]
Some chess variants use more than a single board per match. [[Bughouse chess]], for example, involves four players playing two simultaneous matches on separate boards.<ref>{{Cite web|url=http://www.chessvariants.com/multiplayer.dir/tandem.html|title=Bughouse Chess|access-date=July 6, 2018}}</ref> [[Alice Chess]] is a popular variant which is usually played on two boards to facilitate the movement of pieces between the boards.<ref>Hooper & Whyld 1992, p. 11.</ref> [[Three-dimensional chess|Three-dimensional]] boards are often represented by multiple two-dimensional boards. Variants may use anywhere from two to eight boards.<ref name=":1" /> For example, [[Three-dimensional chess#Raumschach|Raumschach]] utilises five boards of twenty-five squares each, totaling 125 squares.<ref name=":1">{{Cite web|url=http://www.chessvariants.com/3d.dir/3d5.html|title=Raumschach|access-date=July 5, 2018}}</ref> Another noteworthy variant, ''Star Trek'' Chess, utilises a board of sixty-four squares divided into seven levels.<ref name=":2">{{Cite web|url=http://www.chessvariants.com/3d.dir/startrek.html|title=3D Chess from Star Trek|access-date=July 5, 2018}}</ref> ''Star Trek'' Chess uses a board with movable parts divided into seven levels. In the initial position, each player occupies two of the movable four-square attack boards. The white pieces start in the lower level, using attack boards connected to this level and the first two rows of the board, while the black pieces start at the top, using the attack boards and first two rows of the third level.<ref name=":2" />
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