The part of the sentence "by even the most" is correct and usable in written English. You can use this phrase when you want to refer to something that even people or things with the most extreme qualities have difficulty achieving. For example, "The task was daunting, much to the dismay of even the most seasoned professionals."
Some areas of financial regulation have been neglected by even the most forward-thinking emerging countries.
As his book progresses, Clegg himself seems bored by even the most piquant episodes.
Persecution, it turns out, can be practiced by even the most persecuted of peoples.
In fact he seems kind of bored by even the most exciting parts.
That, and a longer-acting biorational, Bacillus sphaericus, are accepted by even the most cautious environmentalists.
As a result, smuggling became widespread and was practiced by even the most respectable colonists.
Nevertheless there have been caveats issued by even the most ardent of proponents.
It's a secret anxiety that can be tapped into by even the most accomplished women.
And they are immensely accessible, enjoyed by even the most inexperienced art viewer.
These issues could prevent or delay M&A activity by even the most respected institutions for extended periods.
As a US political obsessive, I am not easily bored by even the most wonkish policy aspects of debates.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK