The phrase "a challenge to complete" is correct and usable in written English.
It can be used when referring to a task or activity that requires effort and skill to finish successfully.
Example: "The project was a challenge to complete, but the team worked hard and met the deadline."
Alternatives: "a task to accomplish" or "an undertaking to finish".
The former Great Britain international sets a challenge to complete fifty passes as an incentive, but he loses the bet and ends up doing fifty press-ups.
The study was a challenge to complete because the researchers had to quiz the CEOs about whether they regarded themselves as humble and then test that judgment with mid- and upper-level management.
Choose weight of dumbbell so that at the end of your set, you should feel like it is a challenge to complete.
He will become comfortable with these routines and it will not feel like a challenge to complete them every time he eats.
The large number of orders the company put in this summer ahead of the holiday season was a "big challenge" to complete, Markel said.
Walker, who was swimming to raise proceeds for the nonprofit Whale and Dolphin Conservation, embarked on the Cook Strait swim as part of the Ocean's Seven, a global challenge to complete seven long-distance swims.
Still, it's an easy challenge to complete if you know where to look.
Glover, who won Olympic gold at London 2012, and Swann led from 500 metres onwards and held off a late New Zealand challenge to complete a hat-trick of wins in this year's World Cup regattas.
But the departure of Mr. Clarke, 42, and a few other former Compaq executives, analysts say, are of greater significance to Hewlett-Packard in terms of a thinning of the management ranks below Carleton S. Fiorina, the company's chief executive, who overcame a fierce proxy challenge to complete the Compaq merger in May 2002.
Each comp sees three three teams of professional skateboarders given a loose itinerary and a bunch of challenges to complete.
Mega Man Powered Up also features a Challenge Mode with 100 challenges to complete, a level editor for creating custom stages, and an option to distribute fan-made levels to the PlayStation Network online service.
