It has different approaches to how to do this (pieces are Chancellors and Archbishops). Here is a list of the variants.

• Standard chess with Chancellor and Archbishop promotion.
• Variable setup chess with Chancellors and Archbishop promotion (no castling).
• The above two variants, but also with a king breakthrough victory condition (get your king to where your pawns promote for a win).

• Knights above the Chancellor and Archbishop (Mike Nelson, on the chess variants website, said he tried this variant in the 1970s and found it ""quite treacherous").
• Knights above the Knight pawns
• Knights above the Bishop pawns
• Knights above the Queen and King pawns
• Knights above the Queen and King and pawns in front of them
• Variable Knight setup where you alternate putting your two Knights down on any of the third row spaces.

• One variant where, at the start of your turn if you have an empty space in your back row, you must put a pocket piece you have left on that space.
• Another variant where the Chancellor and Archbishop are true Pocket pieces and player has option of placing either pocket piece on back rown (not forced)

• All pieces in opposite corners. 9 pawns form line. Player can promote pawn if they hit either of the two sides of the board.
• Like the last variant, except that there is the Breakthrough King victory condition (victory spaces are around opposite corner).
• A mini-version of the above, without Knights, Rooks or Bishops. Player gets Queen, King, Chancellor and Archbishop and does variable set up. Pawns move ones space othogonally and can capture one space diagonally. Has Breakthrough King victory condition, which runs across both opposite sides of board. This version could be played 4 players.
• A mini-version like the version above, except that Amazon is used instead of Queen.