The phrase "almost insurmountable problem" is correct and usable in written English.
It can be used to describe a challenge or issue that seems very difficult to overcome, but not entirely impossible.
Example: "The team faced an almost insurmountable problem when trying to meet the project deadline due to unforeseen circumstances."
Alternatives: "nearly impossible challenge" or "formidable obstacle".
Inevitably, for two such dimwits, this is an almost insurmountable problem.
But the police and prosecutors here face an almost insurmountable problem: Money laundering is not a crime in Israel.
This proved an almost insurmountable problem since many of the offenses with which Mr. Lee was charged would have required prosecutors to prove Mr. Lee's motives.
Notwithstanding the excitement around the discovery of Shor's algorithm, and apart from the almost insurmountable problem of practically realizing and implementing a large scale quantum computer, a crucial theoretical question remains open, namely, what physical resources are responsible for the putative power of quantum computing?
Regarding maturation, the observed broad-scale pattern matched theoretical expectations for life-history adaptations to increased mortality (Law and Grey 1989; Roff 1992), although assessing alternative or complementary explanations was an almost insurmountable problem that continues to be debated today.
Mr. Clinton's almost insurmountable problems became clear today as several previously undeclared Republicans announced that they would vote for impeachment on one or more of the four articles of impeachment lodged against Mr. Clinton.
Its poverty and shortage of resources give it almost insurmountable problems, leaving aside the political and tribal differences.
He believed that we face almost insurmountable problems as a nation and a planet, and that the only system that could hope to cope with these problems is a democratic one.
Matthews continues, "The dream of personalized medicine looked like an almost-insurmountable problem 10 years ago because of technical challenges in linking data types and using them to find patterns across massive amounts of data.
Even after the generals got out of the way, he still faced a notoriously obstructive bureaucracy and an almost insurmountable range of problems.
"Their hands are going to be full getting that public support, and I would almost guess it's an insurmountable problem".
