En passant
A special pawn capture: when an enemy pawn rushes two squares past yours, you may take it as if it had moved only one. Learn when it's allowed.
Taking in passing
Black's pawn rushes two squares, from d7 to d5, landing right beside White's pawn on e5. White may capture it as if it had moved only one square: the white pawn moves diagonally to d6, and the black pawn on d5 is removed. This is called en passant, French for 'in passing'.
Now or never
Three things must be true. Your pawn is on its fifth rank, the enemy pawn just moved two squares to land right next to it, and you capture on the very next move. If you wait even one turn, the chance is gone for good.
Capture in passing
Your turn
Black just played pawn d7 to d5. Capture it en passant, then win material.
Show the answer
Taking en passant put your pawn on d6, attacking the rook and the knight at once. Black saved the rook, and the pawn took the knight.
Now as Black
Your turn
White just pushed the e-pawn two squares. Take it en passant and attack two pieces.
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Pawn takes on e3 en passant. Now it attacks both the rook on d2 and the knight on f2, and White can only save one.
Quick check
Question
Black's pawn moved two squares to land beside your pawn, but you made a different move instead. Can you capture it en passant on your next turn?
Show the answer
No, en passant is only allowed right away
The capture must be made on the very next move. After that the chance is gone.