Tic-tac-toe doesn’t have much of a rep. Sure, it’s a simple, brief distraction from the monotony of existence, but once your 8-year-old self realizes that you can always force a draw, it loses its ...

Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. There are two types: Riddler Express for those of you who want ...

Up to equivalence, there aren’t nine distinct opening moves. There are only three. If it isn’t immediately clear to you what “up to equivalence” means here, I urge you to try and figure it out ...

Researchers at Ben-Gurion University of the Negev in Israel are building a tic-tac-toe game to help patients with their rehabilitation exercises. The game is played on a grid of boxes and includes ...

Video produced in partnership with The Great Courses. All Great Courses video content is available only to subscribers with the password sent via email. This piece was adapted from an article ...

The world’s smallest game of tic-tac-toe could have a big impact on the future of nanotechnology. Researchers from the California Institute of Technology (Caltech) have developed a new technique for ...