Some say the reason most manhole covers are round is that a circle cannot fall through a smaller circular hole. Which of ...

Brain teasers are excellent puzzle games for providing the brain with an effective mental workout. This math puzzle is a type ...

Imagine cruising down the open road, the hum of the engine beneath you, the wind in your hair, and the American landscape ...

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Approach this like a math puzzle —strategically and methodically. With each row containing six triangles, and a systematic count (from left to right and top to bottom), most people on the internet ...

Believe it or not, highway numbers actually make sense. Here's the logic behind odd and even routes, and why the system isn't ...

Test your mathematical thinking with this exciting matchstick puzzle. It looks simple, but solving it requires sharp observation, logic, and a smart approach. Are you up for it?

Rocky Point High School math teacher Jay Rand likes to challenge his students with a classic head-scratcher on the first day ...

Marijn Heule turns mathematical statements into something like Sudoku puzzles, then has computers go to work on them. His ...

As avid puzzlers know full well, the humble jigsaw puzzle is a thing of beauty in multiple ways. Not only are jigsaws an absorbing time sink, but multiple studies have demonstrated they are good for ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter.