The three cups problem is a mathematical puzzle that, in its most common form, cannot be solved.

I was thinking that you like mathematical puzzles and things, know a bit about them.

He is best known for his popular science books and mathematical puzzles.

The sentiments presented in the books are not entirely new and the mathematical puzzle has hardly been solved.

The movie, which has the structure of an elaborate mathematical puzzle, is handsome but cold.

As in many mathematical puzzles, the solution is unique.

They have specific rules, as do multiplayer games, but mathematical puzzles don't usually involve competition between two or more players.

The Spire is a series of rooms, each containing a mathematical puzzle.

She asked her father for help with the science and complicated technical aspects, since he enjoyed mathematical puzzles.

So he occupied himself mostly by solving complex mathematical puzzles on paper.