p.boxed.
  10x10 board with four new pieces. Orthodox rules with a few exceptions.

figure.diagram-container
  .diagram
    | fen:2cwamwc2/1rnbqkbnr1/pppppppppp/91/91/91/91/PPPPPPPPPP/1RNBQKBNR1/2CWAMWC2:
  figcaption Initial deterministic position

p There are four new pieces on the first rank:
ul
  li Marshall (M) = rook + knight,
  li Archbishop (A) = bishop + knight,
  li Champion (C) = dabbabah + alfil + wazir,
  li Wizard (W) = camel + ferz.
p.
  Since the pieces mentioned to describe champion and wizard's movements might
  be unknown, here is how they move:

figure.diagram-container
  .diagram.diag12
    | fen:91/91/91/91/91/4C5/91/91/91/91 c7,e7,g7,e6,c5,d5,f5,g5,e4,c3,e3,g3:
  .diagram.diag22
    | fen:91/91/91/91/4W5/91/91/91/91/91 d9,f9,b7,h7,b5,h5,d3,f3,d7,f7,d5,f5:
  figcaption Left: movements of the champion. Right: movements of the wizard.

p.
  The pawns behave as in orthodox chess, with a possible initial two-squares
  jump. They promote in queen, marshall or archbishop.
  There is no castling.

h3 Source

p
  a(href="https://www.chessvariants.com/contests/10/tencubedchess.html")
    | Tencubed chess
  |  on chessvariants.com.

p Inventor: David Paulowich (2005)