En Passant Explained: The Most Misunderstood Chess Rule

En passant is the most confusing rule in chess. This guide explains exactly when and how en passant works, with clear examples even beginners can follow.

By Chess Calculator Team|Published April 9, 2026

En passant is the only capture in chess where the capturing piece doesn't land on the square of the captured piece. No wonder it confuses beginners.

When Can You Capture En Passant?

Three conditions must all be true: (1) Your pawn is on the 5th rank (for White) or 4th rank (for Black). (2) An opponent's pawn advances two squares from its starting position and lands beside your pawn. (3) You capture on the very next move — if you wait, the right expires.

How It Works

Your pawn moves diagonally to the square the opponent's pawn passed through (not the square it landed on). The opponent's pawn is removed from the board.

Why Does This Rule Exist?

When the two-square pawn advance was introduced to speed up the game, it created an unfair situation — a pawn could bypass an opposing pawn. En passant was added to prevent this loophole.

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