Decide to tackle this puzzle again? (7)
I believe the answer is:
resolve
'decide' is the definition.
(resolving is a kind of deciding)
'tackle this puzzle again?' is the wordplay.
I cannot really understand how this works, but
'again?' could be 're' and 're' is found in the answer.
The remaining letters 'solve' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
'to' acts as a link.
Can you help me to learn more?
(Other definitions for resolve that I've seen before include "unravel clues again?" , "Settle (a dispute)" , "Analyse" , "Fix" , "Be determined" .)