The difficulty of a puzzle can almost always be directly attributed to how many pieces there are. For most adults a 100-piece puzzle will likely be too easy, but a 1000-piece puzzle might cause ...

The middle two cards add up to an even number. Neither of them is a club. And this one is a good logic puzzle for adults. You ...

If you want even more puzzling fun, check out how you can get 10 puzzles a day in the Prima app. Here's Prima's pick of the best adult jigsaw puzzles to shop right now. Make this puzzle an occasion by ...