How Is This Move Valid?

So I'm fairly new to Chess, but as far as I know, pawns can't capture like that? It was to the side of that Pawn but it moved diagonally and still captured it when I attacked their Queen. Is there an additional rule that I'm missing, or is this a bug? Thank you.

p.s. Sorry if this isn't the correct forum thread. Wasn't sure where to put this! No hate to my opponent either, I just don't understand this.

How Is This Move Valid?

I'm pretty sure it even has a note in moves history that describes it... either way, just Google "en passant" (

I must have missed that in the moves history then. I looked it up, thank you! I didn't know that was a thing.

They have added the rule after they added "pawn can move 2 squares" (for convenience and faster games) and realized it's exploitable to push your pawn past opponent's pawn-attacked square. So its not met every game. (Also, don't listen to people from anarchychess who demand you to en passant whenever you can :)

Fun fact: even googling "weird pawn move" shows en passant immediately. As well as a myriad other expressions of the same meaning.

The mystery could have been solved in 10 seconds, without creating a youtube video and a forum topic.

@vd2010g Yeah this was the first time I've encountered that so I was thrown off. Thanks for the clarification!

@magipi Unfortunately, I didn't think of "weird pawn move" at the time. I used wikipedia to look up what a pawn can do, and I guess I missed the mention of en passante.

using wikipedia was your mistake.

"En passant" is a French term that means "in passing." This rule allows a pawn to capture an opponent's pawn that has moved two squares forward from its starting position, as if it had only moved one square. This can only happen immediately after the opponent's pawn makes the two-square move, and the capture must be made on the very next move.