"The Queen's Gambit" game (5)
I believe the answer is:
chess
'the queen's gambit game' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for chess that I've seen before include "Sixteen-men-a-side game" , "Musical - board game" , "that has over thirty men on board" , "form of battle" , "activity aimed at downfall of a king" .)