King or Queen maybe in well-practised move (3,5)
I believe the answer is:
set piece
'well-practised move' is the definition.
(move in sport)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for set piece that I've seen before include "Formal arrangement based on steep ice" , "Piece of writing arranged for maximum effect" , "Formal speech; pictorial firework arrangement" , "Moves from corner perhaps" , "corner, say" .)