I was playing with my friend, and I moved my pawn to a5. Her pawn was on b5 and then she took it??? She ended up on a6. Can someone tell me if this is a legal move?
It's a legal move called capturing en passant.
https://www.chess.com/learn-how-to-play-chess

I was playing with my friend, and I moved my pawn to a5. Her pawn was on b5 and then she took it??? She ended up on a6. Can someone tell me if this is a legal move?