Doing puzzles is a challenging mental activity.

The puzzle is complete now.

Throughout history, there have been countless unsolved mysteries, such as the disappearance of the Roanoke Colony, which has puzzled historians for centuries, with no known explanation.

Sudoku is a form of puzzle.

She would rather solve the puzzle herself.

This jigsaw puzzle has four pieces missing.

The puzzle kept me absorbed for hours.

She demonstrated remarkable intelligence in solving the puzzle.

Is there another way to solve this puzzle?

It is the missing part of the puzzle.

I found the missing piece of the puzzle.

He solved the puzzle creatively, finding a unique solution.

Please join the two pieces of the puzzle together.

He solved the puzzle in the space of a few minutes.

He let out a yelp of frustration when he couldn't solve the puzzle.