Fencing looks chaotic at first, but the rules are simple once you know what to watch.
Fencers fence on a strip (piste) about 14m long. Step off the back and you concede a touch. A valid hit lights the scoring box, modern fencing is electric, so a light, not a referee's eyesight, confirms most touches.
In foil and sabre, if both fencers hit, only one point is awarded, to whoever had right-of-way (started a correct attack first). The referee "reads the phrase" and points to the winner. In épée there's no right-of-way: first to land scores, and simultaneous hits give both fencers a point.
New to the words? Our fencing glossary defines them all.