That would probably simplify the engineering of an extraordinarily complex three-dimensional underground puzzle.

They were given the task of solving a simple three-dimensional puzzle that involved four blocks, with portions of a picture on a single face.

The Habitat resembled a complex three-dimensional puzzle pulled apart by an idle child.

Throughout the 1990s, three-dimensional puzzles were made, leading to a rapid growth in the company.

It was several things, and they were interrelated like some kind of three-dimensional crossword puzzle.

Those who have finished their watercolors build a three-dimensional puzzle of a cathedral in Italy.

It was like filling in a three-dimensional puzzle.

He wondered why no one had ever made a true three-dimensional puzzle, but a few experiments showed that traditional cardboard pieces just fell in on themselves.

Dressing, to them, is like an engineering project, a three-dimensional puzzle devoid of value judgment.

"He loves to meet new people and show them his tricks - he can do little three-dimensional puzzles with his feet."