The offside rule is notoriously hard to describe. It's not even set in stone as there is a subjective element to making the judgement in some situations. There

The offside rule is notoriously hard to describe. It's not even set in stone as there is a subjective element to making the judgement in some situations. There's an entire Wikipedia article about it. https://en.wikipedia.org/wiki/Offside_(association_football) https://en.wikipedia.org/wiki/Offside_(association_football)