Premise 1: Chessboard
notation is (file)(rank)(level), where files are lettered a, b, c, etc.,
ranks are numbered 1, 2, 3, etc., and levels are lettered A, B, C, etc.
Premise 2: The chessboard
consists of multiple 2D boards arranged vertically, forming a grid of
cells. Portions of the grid may be unusable.
Premise 3: 2D boards are
offset 0 or 1 unit for each increase in level in either the X direction,
the Y direction, or both the X and Y directions.
Premise 4: The chessboard
uses cells of two colors.
Premise 5: Vertically,
the chessboard cell colors may be varying or constant.
Premise 6: 3D piece
moves are a superset of 2D piece moves.