Jörg Knappen wrote on Fri, Feb 5, 2010 04:55 PM UTC:
There is a minor error about the WL (Wazir+Camel) compound: This piece cannot checkmate, because it does not control two orthogonally adjacent squares. Therefore it is not a major piece under the definition used by Fergus Duniho.
On the other hand, a Wazir and a Camel and a King (three pieces!) can mate a lone King.