difficult problem
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“It’s a notoriously difficult problem for classical computers,” Chow explained.
From Barron's • Jan. 29, 2026
“It’s a difficult problem to solve, and California is kind of solving it in real time.”
From Los Angeles Times • Nov. 26, 2025
That problem of coordinating people's attention at the same time to do X is a difficult problem.
From Salon • Mar. 22, 2025
This difficult problem has again been studied by many groups in many different ways, but now a similar unifying structure might be just around the corner.
From Science Daily • Apr. 26, 2024
It ticked in a satisfied and self-important way, as if it had managed to solve some difficult problem.
From "Raymie Nightingale" by Kate DiCamillo
