![](https://api.time.com/wp-content/uploads/2016/02/fbchess.png?w=2400&quality=85)
Games like Farmville and Candy Crush Saga have exploded in popularity on Facebook over the years, but most users probably aren’t aware of the secret game hidden inside the company’s Messenger app.
By typing a quick phrase, any Facebook user can start a game of chess with another friend through Facebook’s website or Messenger app.
It’s not the best online chess experience, but it’s a fun little Easter egg to play around with.
Here’s how to play the game, which blog BetaNews recently noticed:
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