Duolingo launched a beta version of a chess course on Tuesday, April 22. The new, free course teaches users how each chess piece moves through short puzzles, lead by the app's in-game chess coach ...

Corrected: A previous version of this article referenced the International Chess Federation acronym as ICF. The acronym is FIDE. There are 25 million kids worldwide who play chess competitively, ...

Duolingo has been through a lot of changes over the past few years. What was once solely a language-learning app has grown into a social media marketing machine, a destination for math and music ...

The bad news is that there is no single solution to Rule 16. There’s not even a daily solution, the puzzle will be different each time you play the game. So you’re going to have to do one of two ...