Assertion: checkmate's piece | /r/HasProperty | promoted
Facets:
Source sentences:
text: On the reverse side of each piece, other than the king and gold general, are one or two other characters, in amateur sets often in a different color (usually red); this side is turned face up during play to indicate that the piece has been promoted.
text: A king or a gold general does not promote; nor can a piece that is already promoted.