The internet is full of Easter Eggs, features hidden by developers inside applications and websites to enhance the experience, or even just for a bit of fun, the latest to be found is a hidden chess game that can be played from within Facebook Messenger.

In a chat with a friend type @fbchess to start a chess game within messenger

To make a move use Standard Algebraic Notation

@fbchess e4 or @fbchess Pe4 moves pawn to e4
Nbd2 to move knight from b-file to d2
B2xc5 to take on c5 with 2nd rank bishop
e8=Q to promote pawn to queen
0-0-0 or O-O to castle

Other commands include

Help: @fbchess help
Start game with random colors: @fbchess play
Pick the colors: @fbchess play white/black
Pick the opponent: @fbchess play white John

Claim draw (e.g. 3-fold repetition): @fbchess draw claim
Offer a draw in the current position: @fbchess draw offer
Offer an undo of the last move: @fbchess undo
Resign: @fbchess resign
Show current position: @fbchess show
Show stats between current players: @fbchess stats

So I guess the question we need to ask is, Shall we play a game?