Need guts to sacrifice second Queen (6)
I believe the answer is:
entail
'need' is the definition.
(I've seen this before)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for entail that I've seen before include "Inevitably result in" , "Invlove or necessitate" , "Restriction on inheritance" , "outmoded fashion" , "Occasion" .)