Bishop dominant having moved in game (9)
I believe the answer is:
badminton
'game' is the definition.
(badminton is a kind of game)
'bishop dominant having moved' is the wordplay.
I cannot quite understand how this works, but
'bishop' could be 'b' (chess abbreviation) and 'b' is found in the answer.
an anagram of 'dominant' is 'adminton' which is within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for badminton that I've seen before include "Game played with a shuttlecock" , "Game using shuttlecock" , "Game with shuttlecocks" , "Racket sport" , "Seat of the Duke of Beaufort - racket game" .)