M Winther wrote on Fri, Apr 17, 2009 05:08 PM UTC:
If you're interested in this type of paralyzing piece, then have a look on my Pyrrhus Chess. The Pyrrhus moves and captures like a king. In addition, it paralyses any enemy piece within queen-move range. It seems to be as valuable as a queen.
http://hem.passagen.se/melki9/pyrrhuschess.htm
/Mats