Tic-tac-toe (or “Noughts and Crosses”) is a game simple enough to implement in any computer system: indeed it’s often used in beginner’s programming courses. A more challeng… ...

Tic tac toe is a classic game. It can be played virtually anywhere and on anything, from a bar napkin to a computer screen to a chic wooden set. When you’re the first one up, there is a simple ...

Although tic-tac-toe is a small game, the solution requires a sizable dose of deduction. To aid discussion in the comments, let’s number the squares like a telephone. Graphic: Jack Murtagh ...