Chess opening (6)
'chess opening' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for gambit that I've seen before include "Opening action" , "tricky move" , "Opening chess move" , "Stratagem in chess" , "Initial move found in bag, Tim" .)
'chess opening?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Another definition for cee that I've seen is " letter".)