The phrase "a tricky set of" is correct and usable in written English.
It can be used to describe a collection of items, tasks, or situations that are complex or difficult to navigate.
Example: "The project involves a tricky set of challenges that require careful planning and execution."
Alternatives: "a complicated array of" or "a challenging group of".
Or were they trying to sort their way through a tricky set of issues that will never be fully resolved?
Best and worst bits Complete a tricky set of problems and you'll feel the most incredible wave of satisfaction.
It was Sunderland's third league win of the season was very timely ahead of a tricky set of fixtures which will see them take on Man Utd, Manchester City, Southampton and Tottenham before the New Year.
NB: prices with Betfair and correct at the time of publication Into the penultimate round of matches and it couldn't be much tighter at the top after a tricky set of fixtures last weekend..
As more political campaigning goes online, federal regulators face a tricky set of questions about how, and whether, to regulate the Internet as it plays an increasingly powerful role in promoting candidates, raising money and encouraging debate.
As more campaigning goes online and as new forms of cybercampaigning arise, federal regulators face a tricky set of questions about how to regulate the Web -- and whether to do so -- as it plays an increasingly powerful role in promoting candidates, raising money and encouraging political discussion.
But large sections of it may be going over to the armed rebels, whose targets include Albanian "collaborators" with the Serbs.As NATO's experts work out their contingency plans (no-fly zones, electronic warfare, air strikes against airfields, communications and air-defence systems), their political masters face an equally tricky set of problems.
The program was "Capriccio Italian" by Tchaikovsky, an at times corny showpiece; selections from "The Three-Cornered Hat" by Falla, a flavorful and rhythmically tricky set of dance pieces; and the majestic, character-filled "Enigma" Variations by Elgar.
A round of fixtures that arguably provides the trickiest set of tipping conditions of the season.
But offering that reassuring if somewhat contradictory signal — that by adding troops he can speed the United States toward an exit — is just the first of a set of tricky messages Mr. Obama will have to deliver as he rolls out his strategy publicly.
