M Winther wrote on Wed, Dec 16, 2009 05:52 PM UTC:
A similar principle can be employed by giving an already existent piece the capacity to enhance the movement of other pieces, as in my Dromedary Chess
http://hem.passagen.se/melki9/dromedary.htm
and Royal Cannon Chess
http://hem.passagen.se/melki9/royalcannon.htm
In the above two variants it's the king who energizes the adjacent piece.
Also the following two variants are pertinent to the discussion.
Hopper Chess
http://hem.passagen.se/melki9/hopperchess.htm
Gunnery Chess
http://hem.passagen.se/melki9/gunnerychess.htm
Mats