Crossword Genius

Pig primarily investigates with nose, uprooting new problems (7)

Ross

I believe the answer is:

puzzles

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

'problems' is the definition.
(I know this)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for puzzles that I've seen before include "Crosswords?" , "such as Enigma and Maze" , "Games that test mental skills" , "Perplexes" .)

I've seen this clue in The Independent.
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