Noughts and crosses, or tic-tac-toe, is a simple game – but twist the rules and you can really spice it up, says Peter Rowlett ...

[Nicholas Carlini] programmed a C implementation of two-player Tic Tac Toe, and he did it in a single call to printf(). The arguments for that single function call get mind-bendingly complex ...

Tic-tac-toe (or “Noughts and Crosses”) is a game ... on which the robot and the human can draw their O’s and X’s. The mechanical structure of the robot looks a bit like a tiny human ...