[Nicholas Carlini] programmed a C implementation of two-player Tic Tac Toe, and he did it in a single ... written for The International Obfuscated C Code Contest (IOCCC). Most of us are aware ...

Tic-tac-toe (or “Noughts and Crosses”) is a game ... Since it’s all open source, anyone can build it from scratch and modify it to their liking. The pictures show the original design by ...