Looking over the incomplete 2,000-piece puzzle laid out on a desk in her Cambridge, Ont. basement, Yvette Bellaire wonders how much the hundreds of puzzles she's built over the past few years might've ...

of solving a puzzle box and remembering where you were, recognizing new passages. Big part of the fun. [Narrator] Uh oh, I got stuck again. So this is a little psychological.

It's not as simple as just reaching in the box, pulling out a puzzle piece and trying to figure out where it fits. Instead, the pieces come in bags of 6,000, which are sorted by colour so it's not ...

A simple box with an unusual locking mechanism challenges guests who attempt to solve it. A box that can't seem to open challenges several people to think critically on how to open it. Curiosity ...