teaser
puzzler
puzzle
mystifier
pseudosolution
goat rope
bug
unriddle
cure
half-measure
answer
sticking plaster
escape fire
Gordian knot
dissolution
open and shut case
dissolving
nonsolution
hard nut to crack
vexed
tough nut to crack
unsolvable
line of attack
decipher
ticket
enodation
solutionally
solutional
uncontrollable
unmanageable
worm in the apple
solving
resolve
resolution
subproblem
the cure is worse than the disease
dissolve
solvable
break up
stumble
complex
resolvent
solvability
sort out
solution
resolvable
wing and prayer
problem
job
unriddleable
constraint
a problem shared is a problem halved
metaproblem
crack
corner solution
get right
square the circle
soluble
cut the Gordian knot
MacGyverism
work out
matter
tar baby
bitch
unresolved
unsolved
misfix
requisitum
unsolvably
brainstorm
stumper
brainteaser
nonresolution
thought bubble
mistake
counterproblem
hackaround
that's done it
fudge
hit a wall
one-banana problem
open problem
fumble
bandage
upsolve
problematize
misresolve
softwarization
problem-solve
snag
therein lies the rub