The phrase "sophisticated problem" is correct and usable in written English.
You can use it when referring to a complex or difficult issue that requires expert attention or knowledge. For example: "The technology team is working on the sophisticated problem of integrating the new software with the existing system."
A mathematical programming model is required to formulate such a sophisticated problem.
And beyond the voyeurism aspect, Rad sees Passport as more of a sophisticated problem for Tinder users who travel frequently.
The modeling of free surface flow over a labyrinth side weir is a sophisticated problem in the hydraulic engineering.
A more sophisticated problem outlined by Hodgson (1967: 38) and others is that a promising convention is broadly speaking incompatible with an act utilitarian society.
An advanced non-linear dynamic finite element model has been used to simulate such sophisticated problem, considering the full seismic interaction between tunnel, surrounding soil and bedrock motion.
They focused on the technical solution to a vexing problem about how to use citations to quantify the quality of a research paper (a mathematically sophisticated problem involving sparse matrices and Markov chains).
"Chess is very compatible with critical thinking, sophisticated problem-solving and addressing the same kinds of issues as artists face," Mr. Lewis said.
Mathematical recreations comprise puzzles and games that vary from naive amusements to sophisticated problems, some of which have never been solved.
We observed that this poorer content knowledge inhibited sophisticated problem-solving and synthesis skills needed to support the team's complex reasoning.
The technique can be extended to more sophisticated problems with variable and distributed time delays.
As such, it links the past, present and future to solve sophisticated problems.
