Crossword Genius

Sharp finesse leading with fourth in suit (4)

Ross

I believe the answer is:

tart

I'm a little stuck... Click here to teach me more about this clue!

'sharp' is the definition.
(I know that sharp can be written as tart)

'finesse leading with fourth in suit' is the wordplay.
I cannot really see how this works, but
'finesse' could be 'art' (I've seen this in another clue) and 'art' is located in the answer.
'fourth in suit' could be 't' (4th letter of 'suit') and 't' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for tart that I've seen before include "Biting; flan" , "Tasting sour like a lemon" , "Of taste, sharp or acid" , "Acidic in taste" , "Sharp; pastry" .)

I've seen this clue in The Independent.
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