Moussambani wrote on Thu, Feb 3, 2005 05:41 PM UTC:
White sergeant e7, White king f6, black king g8.
White to play, Se8=R=Rh1# is this legal? (plain English for Se8=R=Rh1# is
Sergeant moves to e8, promotes to Rook, then since a rook is checking, a
rook is resurrected at h1, which incidentally covers the flight square
h7,
completing the checkmate.)
I don't see why not, but some games have provisos against these kind of
checkmate-via-drops thing, so I thought I'd just ask.