Why En Passant Confuses Every Chess Beginner

By Lalit Akhade, Founder & Head Coach, ChessMates Academy · Published 2026-09-13 · 6 min read

The Move That Makes Kids Say "That's Not Fair!"

Every chess parent eventually hears some version of this: your child's pawn gets captured by an enemy pawn that, as far as they can tell, was nowhere near it. No piece moved onto their square. No diagonal capture happened. Their pawn is just... gone. To a beginner, this looks exactly like cheating.

It isn't. It's en passant — French for "in passing" — and it's one of the few chess rules that genuinely needs to be taught rather than discovered. Nobody figures it out by intuition, because nothing else in chess works quite like it. Once a child understands *why* the rule exists, though, it stops feeling like a trick and starts feeling like one of the game's cleverer bits of design.

What En Passant Actually Is

Here's the rule in plain English, no notation required:

A pawn's normal move is one square forward. But on its very first move, a pawn is allowed to jump two squares instead of one.
If that two-square jump lands the pawn directly beside an enemy pawn (on the same rank, right next to it), the enemy pawn gets a one-time special option.
On its very next move only, the enemy pawn can capture the jumping pawn as if it had only moved one square — sliding diagonally onto the square the jumping pawn passed over, not the square it landed on.
If that capture window is missed — if any other move is played first — the right disappears for good. It cannot be used later in the game.

That "use it immediately or lose it forever" condition is exactly what trips kids up. They see the capture happen a turn later in a game they're watching and assume the rule is being invented on the spot.

Why This Odd Rule Exists At All

This isn't an arbitrary quirk — it's a patch for a much older rule change. For centuries, pawns could only ever move one square at a time, even on their first move. Sometime in the 1400s, chess added the two-square first move to speed the game up, since a board full of pawns creeping forward one square a turn made openings painfully slow.

But that speed-up created a side effect nobody wanted: a pawn could now leap straight past an enemy pawn that was sitting right beside its path, completely dodging a capture that would have happened under the old one-square-at-a-time rules. En passant was the fix. It restored the capturing chance the two-square move had accidentally erased, so a pawn couldn't use the new faster rule to sneak by unpunished.

The rule itself shows up in historical sources between the 1400s and 1500s, and it took a surprisingly long time to become universal. Well into the 1800s, some regions played chess without it — Italy and Germany were still leaving it out while England and much of the rest of Europe used it. Italy only adopted the now-standard rule set, en passant included, in 1880, ahead of the international Milan tournament the following year. So the "confusing" rule your child just learned is actually older, and was once more controversial, than almost anything else on the board.

A Simple Example to Walk Through Together

Set up a board (or picture one) with a white pawn on its starting square and a black pawn already sitting four ranks up, level with the square just past that starting square. Now:

White pushes its pawn two squares forward, landing it directly beside the black pawn.
Black now has one move — and only one move — to capture en passant, sliding its pawn diagonally onto the square white's pawn skipped over, removing white's pawn from the board.
If black plays anything else on that turn — moves a different piece, makes a completely unrelated move — the option is gone. White's pawn is now safe from that particular capture for the rest of the game.

Walking through this once on a real board does more than any explanation. Most kids need to see the "skipped square" get captured with their own eyes before the rule clicks.

The Two Mistakes Kids Make Most

Trying to use it too late. A child sees the setup, gets distracted, plays a different move, and then tries to capture en passant two turns later. It's a completely reasonable mistake — the rule really is the only one in chess with a strict "right now or never" clock — but it's worth repeating a few times before it sinks in.

Missing that it only applies to a two-square jump. If an enemy pawn simply walks one square at a time and ends up beside your pawn, there's no en passant option at all. The special capture only exists because of the two-square first move, so it only ever applies immediately after one.

If your child is still getting comfortable with how pawns move in general, it's worth solidifying that foundation before introducing en passant — the exception makes a lot more sense once the normal rule is second nature.

Why a Rule This Small Is Worth Teaching Properly

En passant comes up far less often than basic captures or checkmate patterns, and it's tempting for a parent teaching from memory to just skip it. But leaving it out has a real cost: a child who doesn't know the rule exists will eventually lose a pawn to it in a real game, or a tournament, and feel like the rules changed on them mid-match. Learning it in advance — calmly, on a quiet afternoon — is a lot better than learning it from a confusing loss.

It's also a nice small example of something worth pointing out to a curious kid: chess rules aren't arbitrary. Almost every one exists to solve a specific problem that came up centuries ago, the same way real rules in any game get patched over time. That's a genuinely useful way to think about rules in general, on and off the chessboard.

Small rules like this are exactly the kind of thing a good coach catches early and explains properly the first time, rather than letting a child stumble onto it mid-game and feel confused or cheated. If you're looking for structured beginner instruction that covers the rules kids actually get tripped up by — not just the famous ones — a live coach can walk through en passant on a real board in a few minutes and make sure it sticks.

Curious what a class like that actually looks like? ChessMates' coaches build exactly these small foundations into early lessons, and you can see it for yourself with a free trial class — no pressure, just a real coach showing your child how the rules of chess actually fit together.