Disentangles or solves (8)
I believe the answer is:
unravels
This clue is a double definition.
'disentangles' is the first definition.
(unraveling is a kind of disentangling)
'solves' is the second definition.
(I've seen this in another clue)
(Other definitions for unravels that I've seen before include "Comes undone" , "Unpicks or disentangles" , "Disentangles or solves" .)