Solve crosswords — right answers create knowledge primarily (5)

I believe the answer is:

crack

'solve' is the definition.
(I've seen this in another clue)

'crosswords right answers create knowledge primarily' is the wordplay.
'primarily' says to take the initial letters.
The first letters of 'crosswords right answers create knowledge' is 'CRACK'.

(Other definitions for crack that I've seen before include "find solution" , "Try" , "Drug - solve" , "bang" , "Joke; split" .)

I've seen this clue in The Times.

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