Charles Gilman wrote on Thu, Dec 4, 2008 06:32 AM UTC:
I had to think carefully about this, and in particular deal with each
sequence in turn. A general point is that this page does not refer to any
kind of counterpart, so I see no relevance in a piece having or not having
one in some other context.
The slow sequence is taken directly from Alternate Promotion Chess (see
introduction) which requires alternation between FIDE and non-FIDE pieces.
Given the closeness in power between the Knight and Bishop any non-FIDE
piece is likely to have imperfections of the kind that you mention. Out of
couriosity, how big does a board have to get for the Bishop to overtake the
Prince in power?
The Knighted sequence is an extension of the slow sequence and therefore
inherits the Prince from it.
With the Courier-inclusive you are on better ground as alternation breaks
down altogether. Also, I do not use the Prince in Courier Kamil, even
though it is in the original Courier. The only snag is that it would no
longer true that 'As well as CK and FIDE arrays it can be used with the
Courier array itself', unless a special rule were applied to the Prince
in that.