Played on 3 6x8 boards, each player starts with 18 Pawns, 2 Rooks, 4 Bishops, 4 Knights, 1 Queen and 1 King.
Pawns move like orthodox pawns on their current plane, but can go to another plane for captures only (see figure).
Knights move following L shape paths in the 3 dimensions. They land on the opposite color from the starting cell.
Bishops move following 3D diagonals always remaining on the same color.
The Queen moves like Rook + Bishop + Unicorn.
The King moves like orthodox King on its current plane, but can go to another plane for captures only (see figure).
Moves 1 step diagonally forward, and captures one step straight ahead (also above and below). In its initial location it can also jump 2 steps diagonally forward to an empty square.
Moves and captures 1 or 2 steps (jumping) orthogonally or on the column.
Moves and captures 1 or 2 steps (jumping) orthogonally or diagonally by the upper or lower corners to change level and square color at the same time.
Combines the move of the bishop and the knight.
Combines the move and capture of the rook and the king.
The King moves like orthodox King on its current plane, but can go to another plane for captures only (see figure).
Double move for Pawns (start): yes.
Castling: yes.
"En passant" capture: yes.