P-complete
metaproblem
problematologically
trifecta
multiproblem
rough trot
trouble
hard-set
therein lies the rub
problem
perfect storm
multiproblematic
troublement
where the shoe pinches
counterdifficulty
algorithmic program
algorithmic rule
enmesh
problem statement
algorithm
problemed
problematize
diagnose
dilemmatically
pressure point
conjuncture
problematically
entangled
enodation
troublemaking
principle
in difficulties
rocky
torfer
if it's not one thing it's another
kink
strife
snag
swamp
bind
problem-solve
in a bind
pass
tsuris
throw a wrench in
doo-doo
problem space
complex
catch a cold
hard sledding
fractious
interfault
dilemmatic
rub
hard time
resolve
problematicity
problemise
weight of the world
counterproblem
dilemmic
second best
optimization problem
universal set
spinous
gotcha
porism
solving
job
tough nut to crack
combinatorial geometry
hard nut to crack
situation
vicious circle
trubs
hard hit
resolution
in the same shoes
intractable
dissolve
problematic
square the circle
break up
hell
dilemmalike
torrid
unmess
thing
worm in the apple
blaze
straiten
distress
shipwreck
a bad penny always turns up