Games - Three-dimensional chess

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	Games - Three-dimensional chess

Three-dimensional chess, or 3D chess, are examples of chess variants. Three-dimensional variants have existed since the late 19th century. One of the oldest versions is Raumschach (German for "Space chess"), invented in 1907 by Ferdinand Maack and played on a 5×5×5 board.

Tri-Dimensional Chess

Probably the most familiar 3D chess variant to the general public in the early 21st century is the game of Tri-Dimensional Chess (Tri-D Chess), which can be seen in many Star Trek TV episodes and movies, starting with the original series and proceeding in updated forms throughout the subsequent movies and spinoff series.

The original Star Trek prop was assembled using boards from 3-D Checkers and 3-D Tic Tac Toe games available in stores at the time (also visible being played in the original series episodes) and adding futuristic chess pieces. Rules for the game were never invented within the series; in fact, the boards are sometimes not even aligned consistently from one shot to the next within a single episode. The Tri-D chessboard set was made popular by its inclusion in the Starfleet Technical Manual by Franz Joseph Schnaubelt, who invented starting positions for the playing pieces and short additional rules. The complete Standard Rules of this game were originally developed in 1976 by Andrew Bartmess, who has subsequently expanded and fine-tuned them.

There also is a Creative Commons-licensed manual written in Italian by Marco Bresciani, which presents a complete and faithful translation of the latest version of Bartmess' Standard Rules, with instructions on how to build a chessboard and many other things. This manual is available through the Star Trek Italian Club (for members only, see external links, below). Marco Bresciani also made a software project as an Information Technology Laurea Degree final thesis, that allows playing Tri-D Chess with Bartmess' Standard Rules full support. There are various computer softwares for playing Tri-D Chess. A set of tournament rules for Tri-Dimensional Chess written by Jens Meder is available on his website, However, Meder's rules are based on FIDE's Rules more than Andrew Bartmess's Standard Rules, with some deviations too.

Other variants

Another variant of 3D chess is that simulated by the 3dchess program for GNU/Linux. This variant is played on three standard 8×8 boards, stacked vertically. The middle board features the standard pieces, while the following new pieces populate the other two boards:

Prince (King)
Princess (Queen)
Abbey (Bishop)
Cannon (Knight)
Galley (Rook)

The movements of various pieces have been modified to allow them to move across boards (for example the Cannon must move three spaces in one direction, two in a perpendicular direction and one in the remaining perpendicular).

A variant possibly similar to Star Trek 's Tri-Dimensional Chess is seen in Legend of the Galactic Heroes, a Japanese science fiction novel. Another SF 3D chess game is Cheops or Pyramid chess, mentioned in the Dune novels of Frank Herbert, which has the object of simultaneously placing one's opponent in checkmate and one's own Queen at the apex of the pyramidal board.

Isaac Asimov's science fiction short story A Perfect Fit refers to a 3D chess game which is effectively eight chessboards stacked upon each other, making the playing area cubic rather than square (i.e., exactly one dimension more than ordinary 2D chess).

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