difficultpuzzle
nounUK /ˈdɪfɪkəlt ˈpʌzəl/
US /ˈdɪfɪkəlt ˈpʌzəl/
A difficult puzzle is a game or problem that is very hard to solve.
The jigsaw with a thousand pieces was a difficult puzzle for the whole family.
OTHER MEANINGS
2. A confusing situation that is hard to understand.
Figuring out the bus schedule became a difficult puzzle.
3. A tricky question that needs clever thinking.
The teacher gave us a difficult puzzle about numbers.
4. Something that takes a lot of time and effort to work out.
Fixing the old clock was a difficult puzzle for the repairman.