Few instruments have a lower barrier for entry than the humble harmonica. Even if you've never played an instrument in your life, after a few hours of practice, I guarantee you'll manage to learn ...

An internal combustion engine is one that operates through a thermodynamic cycle of internal combustion called Otto: when a ...

Rule 16 displays a chessboard and a game in progress, asking for the next best move in chess notation as the next addition to your password. But what if you’ve never played chess before?

Core, desktop application and website for Sparks NMN, a natural text format for composing numbered music notation scores.