en passant


Yeah, En passant my mum and my dad get. and my dad is drederick. But i don't. Well i guess i am to young


It comes up once in a while.
To clarify the rule for those who don't understand it, think of it this way: If a pawn moved one square from it's starting position, it could be capture by an enemy pawn. But it moves two squares from its starting position instead. It can still be captured as if it had only moved one square, but only on the very next move.
--Fromper
This was either the very first or the very second instance where I was learning the ropes more than ten years ago (not on Chess.com of course) and had not been aware of the en passant rule yet at that time.
At this point of time, I was very surprised that the pop-up message (displaying that I had checkmated the opponent) did not appear. I believed that there was a bug. Ironically and unexpectedly, neither did my opponent know about this rule, and it took more than ten minutes later for my opponent to find out what to do afterwards. I was in shock after seeing that the pawn was "controlled by a spirit".
Can anyone, simply, remind of the criteria for en passant (excuse sp.)?
thanks
dred