Chess manoeuvre involving a sacrifice (6)

I believe the answer is:

gambit

(Other definitions for gambit that I've seen before include "Initial move found in bag, Tim" , "Sacrificial strategy in chess" , "Stratagem in chess" , "Opening action" , "opening on board" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.