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Pocket Mutation Chess. Take one of your pieces off the board, maybe change it, keep it in reserve, and drop it on the board later. (8x8, Cells: 64) (Recognized!)[All Comments] [Add Comment or Rating]

Anonymous wrote on Fri, Mar 19, 2004 09:22 PM UTC:

Promotion via mutation is mandatory when pocketing a piece on the eight
rank, excepting the case of the AmazonRider which can be pocketed form
the
eighth rank without promoting since there is no higher rank for it to
promote to. A variant you where promotion is optional also has a great
deal of merit.

Your proposed SuperNightRider would be value class 5.  A Nightrider-Ferz
or Nightrider-Wazir would be class 4, as would a SuperKnight.