en paissant

How do you take a pawn with the pawn it has just passed? Please explain the rule, as well. Thank you
- mud dobber

See the topic "Rules of Chess", chaper "En passant". To make such a
move you have to click on your pawn and on your pawn's destination.

Here is the link:

http://www.redhotpawn.com/static/rules/moves.php