Russe ⇄ Allemand Anglais Bachkir Bokmål norvégien Danois Espagnol Finnois Français Hongrois Italien Japonais Langues chinoises Letton Néerlandais Polonais Tchèque Vietnamien

трудная задача contraintes
génér.	baffling problem; poser; teaser; tickler; large order; tall order; back-breaker; puzzler; son of bitch; stumper; waffle; beast of a job; an uphill task; a tall order; the deuce and all to pay; the devil to pay; demanding task (mascot); toughy (Translucid Mushroom); Delian problem; back breaker; son of a bitch; sonof a bitch; sonofa bitch; hump; twister; challenging task (Taras); a hard nut; a stiff task; hard problem; the deuce and all to pay; tall task (England face tall task to beat Slovenia's goalkeeper Samir Handanovic VLZ_58); a hard nut to crack; uphill struggle (VLZ_58); significant challenge (Alex_Odeychuk); tough hill to climb (a tough hill The loss dropped the Lakers to 30-35 on the season, and they are now 6.5 games out of a playoff spot in the Western Conference, which will be a tough hill to climb with just 17 matchups remaining. george serebryakov); brain teaser (Taras)
Игорь Миг	hard choices
amér.	bloody murder; a hard row to hoe; uphill battle idiom (или ситуация; It will be an uphill battle for him to win the election given recent bad press coverage. Val_Ships)
amér., argot.	funsie; funsey
amér., makar.	blue murder
argot.	real bitch; son of a gun (This is a really son of a gun job! == Это в самом деле хреновая работёнка!)
austr., argot.	can of worms
brit.	bugger
dial.	capper
dipl.	hard task
entr.	difficult task; challenge
idiom.	difficult needle to thread (Журнализм, идиома. Подсмотрел в "Экономисте". CopperKettle)
inform.	bitch (the stove is a bitch to fix Val_Ships)
iron.	fun and games
latin.	pons asinorum
makar.	a headache problem; a tough row to hoe; hard nut to crack; headache problem; heavy task; stiff problem; tough nut to crack; tough row to hoe; troublesome problem; uphill task; a tough nut to crack; arduous task
math.	a challenging task; a challenge
milit.	challenging operation
médec.	difficulty task
pétr.	challenge (сущ. serz)
rhét.	difficult challenge (Alex_Odeychuk)
transp.	formidable task
vulg.	whiz-bitch; ball-breaker (a job or situation that is demanding and arduous and punishing ("Vietnam was a ball-breaker") – трудновыполнимая, как правило, неприятная работа)
NP-трудная задача
progr.	nondeterministic polynomial time hard problem (ssn)
électr.	nondeterministic polynomial time hard; NPH problem
чрезвычайно трудная задача
génér.	daunting task (Harry Johnson)

трудная задача: 79 phrases, 18 sujets

Américain usage, pas orthographe	4
Argot	1
Dialectique	1
Échecs	1
Économie	1
Éducation	1
Entreprise	5
Figuratif	3
Général	29
Idiomatique	2
Informel	3
Makarov	18
Militaire	1
Ressources humaines	1
Rhétorique	3
Sécurité des informations et protection des données	3
Systèmes de sécurité	1
Vulgaire	1