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