"a hell of a challenge" is a valid expression in written English.
You can use this phrase to refer to a difficult situation, task, or problem. For example, "She was facing a hell of a challenge trying to put the puzzle pieces together without any help."
It's a hell of a challenge".
"I'd just say he's got a hell of a challenge".
It's going to be a hell of a challenge for Dan Lydiate, another of my club team-mates, coming up against him.
The senator said the rancher asked him, "Conrad, how can you live back there with all those niggers?" Senator Burns said he told the rancher it was "a hell of a challenge".
My goal and my aims are very specific, that's to get this team up and running in the space of six weeks," said Paul. "It's going to be a hell of a challenge but I'm looking forward to it".
I thought it would be a hell of a challenge, I never really realised until we got in," Moore said.
Here's a hell of an acting challenge, and also an experiment in speculative neuroscience: What happens when a large personality persists but comes unbound from the structures of memory, custom, and comprehension that once contained it?
He said: "They've learned a hell of a lot, enjoyed the challenge, enjoying playing in this arena and enjoyed playing against those players.
"Rumsfeld should get a hell of a lot of credit for challenging the conventional wisdom, for challenging the bureaucracy," Tenet told me not long ago in his office at C.I.A. headquarters, in Langley, Virginia.
"That was a hell of an achievement given the challenges in the Jim Crow era".
But nobody challenged his heritage, because he was a hell of a wrestler in addition to being very large.
