The phrase "a challenge where" is correct and usable in written English.
It can be used to introduce a situation or scenario that involves a challenge or difficulty.
Example: "We are facing a challenge where resources are limited, and we need to find innovative solutions."
Alternatives: "a situation in which" or "a scenario where".
"But this is a challenge where investing less has real consequences for us here at home".
"I want to go somewhere that is a challenge, where other people are afraid to go".
"In men's suits it's more of a challenge, where the customer walks in with a price zone in his mind".
Justice Ginsburg left the door open, though, to a challenge where the delay was caused by "a systemic breakdown in the public defender system".
But the reason I came here today is because of a challenge where the differences are dwindling, where a broad consensus is emerging and where a call for action can now be heard coming from all across America.
What I've dubbed the "object throw" game is a great way to create a challenge where the concept of failure can be explored and names learned at the same time.
For poor countries with inadequate infrastructure and high levels of illiteracy, conducting a census is a great challenge; where a considerable proportion of the population is mobile, the challenges are even greater.
The second option is a peremptory challenge, where an attorney can exclude a juror without stating any reason.
"There's almost a ritual now in Australian politics for a leadership challenge where it goes into a two-stage process.
But those who occupy the middle also face a formidable challenge: where can one draw a principled line between acceptable and unacceptable forms of luck?
"Here in Jamaica, we have a situation where we are facing a growing challenge where HIV and AIDS are concerned," said UNICEF Jamaica HIV/AIDS specialist Novia Condell.
