The three hat puzzles below are arranged roughly in order of difficulty. In all these cases, the best strategy earns the contestants more than random guessing — sometimes quite a lot more. The first ...

The answer options are: 1) Hat One; 2) Hat Two; 3) Hat Three; 4) None of the hats; or 5) Not enough information. OK, so maybe this problem isn't as simple as it seems.

2. The same exact setup as puzzle 1, but with two wrinkles. First, the hats are assigned at random (in puzzle 1, the person assigning hats could know the people’s strategy, try their best to ...

This seek-and-find puzzle, put together by American gaming experts Slingo, challenges players to find three people wearing headgear in a crowded, autumnal scene.