What Is Not Allowed in Fencing? Fouls, Cards and Illegal Moves

Fencing has a clear set of rules that keep it safe and fair, and a number of actions are penalised whenever they happen. Most of what is not allowed comes down to three ideas: don’t make unsafe contact, don’t hide the valid target, and don’t fence dangerously. Here’s what that looks like in practice.

Is body contact allowed in fencing?

No, not in the way people often expect. Barging into an opponent, known as corps-a-corps, or otherwise jostling and pushing through them, is not allowed and is penalised by the referee. Fencing is fought at a distance with the blade, not settled by shoving, so referees stop the action and issue a penalty whenever fencers collide or lean into each other rather than fencing at proper range. If you’re wondering how much a legal hit actually feels like, our article on whether it hurts to get hit in fencing covers that separately.

Can you turn your back on your opponent?

No. Turning your back during an exchange is considered both unsafe and unsporting, since it removes your ability to defend yourself and disrupts the flow of the bout. It is penalised whenever it happens, deliberately or not.

Can you cover up the target area?

No. In foil and sabre, where only part of the body is a valid target, deliberately covering or substituting the valid area with a non-target part of the body, for example turning a shoulder in to block a hit with a non-target zone, is not allowed. The whole point of the target rules is to keep the contest meaningful, and blocking with the wrong part of the body defeats that.

Can you use your free hand to block?

No. Only the weapon may be used to parry or deflect an opponent’s blade. Using your non-sword hand or arm to bat away an attack is illegal and is penalised, since it turns the bout into wrestling rather than fencing.

Are there other actions that are not allowed?

Yes, a few more worth knowing:

• Dangerous or violent actions, including reckless attacks made without control, are never allowed and are treated seriously by referees.
• Crossing the legs while advancing, specifically in sabre, is a technical foul tied to footwork rules for that weapon.
• Stepping off the side of the piste, the fencing strip, interrupts the action and is penalised, distinct from retreating off the back of the strip, which concedes a hit.
• Unsporting behaviour, such as arguing excessively with the referee or poor conduct towards an opponent, is not allowed and can be penalised on its own.

How does the card system work?

Referees enforce all of this with a simple card system.

• Yellow card: a warning for a first or minor offence.
• Red card: a further offence, or a more serious one, which gives a point to the opponent.
• Black card: reserved for the most serious breaches, resulting in expulsion from the competition.

The system is designed to be proportionate. A first, minor infringement rarely costs a fencer anything beyond a warning, while repeated or serious breaches escalate quickly. Understanding right of way also helps make sense of why some contested touches don’t score at all. See our guide on right of way in fencing explained.

What happens with an off-target hit?

In foil, where only the torso counts, a hit that lands off target, say on an arm or leg, does not score a point, but it does stop the action, since the referee still has to assess what happened before restarting the bout. This is a normal part of foil fencing rather than a foul, and it’s one of the quirks new fencers pick up quickly. For the full picture on how points are actually awarded, read how fencing scoring works.

Why the rules matter

None of this is red tape for its own sake. The rules exist to keep fencing safe, keep bouts meaningful, and keep the contest a genuine test of skill rather than a shoving match. Good etiquette matters just as much as the formal rules, and it’s worth reading alongside them. See our guide to fencing etiquette and code of conduct.

Learning the rules properly is much easier on the strip than on the page, with a coach explaining what just happened as it happens. Book a trial lesson and see the rules in action for yourself.