Editing Three-dimensional chess (section)

===Board===
The Raumschach 3‑D&nbsp;board can be thought of as a cube sliced into five equal spaces across each of its three major coordinal planes. This sectioning yields a 5×5×5 (125&nbsp;cube) gamespace. The cubes (usually represented by squares and often called ''cells'') alternate in color in all three dimensions.

[[File:Raumschach gameboard.png|thumb|upright=1.0|left|Raumschach 5×5×5 gamespace]]

The horizontal levels are denoted by capital letters '''A''' through '''E'''.  Ranks and files of a level are denoted using [[Algebraic chess notation|algebraic notation]]. White starts on the '''A''' and '''B''' levels and Black starts on '''E''' and '''D'''. 

{{Raumschach diagram
 |tright
 |
 |rd|nd|kd|nd|rd
 |pd|pd|pd|pd|pd
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
<!-- E -->
 |Ud|bd|qd|Ud|bd
 |pd|pd|pd|pd|pd
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
<!-- D -->
 |  |  |  |  |
 |  |  |xo|  |xo
 |  |  |  |ox|
 |  |  |ox|oo|ox
 |  |  |  |  |
<!-- C -->
 |  |  |  |  |
 |  |  |  |  |
 |  |xo|ox|oo|ox
 |pl|pl|pl|pl|pl
 |bl|Ul|ql|bl|Ul
<!-- B -->
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |pl|pl|pl|pl|pl
 |rl|nl|kl|nl|rl
<!-- A -->
 |Raumschach starting position.{{sfnp|Dickins|1971|p=17}} Unicorns are on Bb1, Be1, Da5, and Dd5. White's pawn on '''Bd2''' can move to cells with a white dot or capture on cells marked "<big>×</big>". Black's unicorn on '''Dd5''' can move to cells with a black dot or capture the white pawn on '''Aa2'''.
}}