take some doing

take some doing

to require considerable effort and care. It'll take some doing, but it'll get done. It's not impossible. It'll just take some doing.
See also: take

take some doing

to need a lot of effort It took some doing, but I finally got the manager to agree to hire you.
See also: take

take some doing

tv. to require added effort and planning. It’ll take some doing, but it’ll get done.
See also: take