The phrase "a tricky problem for" is correct and usable in written English.
It can be used when discussing a challenge or difficulty that someone or something faces.
Example: "The researchers encountered a tricky problem for their experiment that required innovative solutions."
Alternatives: "a challenging issue for" or "a difficult situation for".
The Keystone XL decision presents a tricky problem for the Obama administration.
Meanwhile, Mr Putin has cemented his control by reviving a resentful ideology of ethno-religious nationalism.This poses a tricky problem for America and the EU.
Her refusal to let herself be stigmatised and locked away has created a tricky problem for politicians who are keen to pander to the panicked.
The laws of physics place a limit on how small they can become.This, then, is a tricky problem for those hoping to build future generations of computer chips that are vastly more powerful than today's.
But blogs, which sometimes post songs without permission, along with commentary, pose a tricky problem for music labels trying to maintain control in an increasingly fast-paced digital culture.
Inventory is a tricky problem for retailers, especially small ones.
"Taking money from someone who has earned it and giving it someone who hasn't". A trickier problem for both sides is Ayn Rand's vocal support for abortion rights and hostility to religion – she considered faith in God a psychological disorder.
Already a source of contention during the war, the unit posed a very tricky problem for the occupying Americans, who knew — as did the Russians — what had been going on long before the Japanese surrendered on board the battleship Missouri.
Language remains a very tricky problem for artificial intelligence, but in recent years researchers have made progress in applying deep learning to the problem (see "AI's Language Problem").
The first LEDs were red, yellow and orange, but getting to other colors has been a particularly tricky problem for physicists and engineers.
That's a particularly tricky problem for hard-core dramatists and comedians, whose preferred modes can seem over-the-top in VR.
