bug in the mobile app

Sort:
Blacksfield

Hello, I'm new to chess, and I probably don't know all the rules. I attach screenshots of the problem that happened to me when playing with the bot. I went with a pawn from b2 to b4, but Aaron intercepted it in the air)b2b4

Clockwork_Nemesis
Look up “en passant.” En passant is a special method of capturing in chess that occurs when a pawn captures a horizontally adjacent enemy pawn that has just made an initial two-square advance. The capturing pawn moves to the square that the enemy pawn passed over, as if the enemy pawn had advanced only one square.