"That'd be more difficult, but an interesting challenge, in a way."

Yes, because it would have been an interesting and stimulating challenge.

"His incredible idea of moving a huge museum was an interesting challenge," he said.

In a way, the new assignment would be an interesting challenge, he thought.

"It was fun for the kitchen, an interesting challenge," he said.

The more interesting challenge came when we decided to take a walk.

"One of the interesting challenges is to try to bring fresh winds in when people are used to the old," he said.

"It's going to be an interesting challenge for us," he said.

"It's going to be an interesting challenge to make a fit."

Russians are still pretty new to the democratic game, so reading between the lines has presented an interesting challenge.