The offside rule in soccer is one of the most hotly contested on any soccer pitch. Thus, referees, players, coaches and parents all have a say. But, this is not without good reason. The rule has several exceptions that can throw off most fans. This post attempts to explain it in very easy-to-understand terms so you can “register your vote” with confidence, or just help others learn how to interpret it properly.
For a much more detailed explanation and the official rules / laws of the beautiful game, you can go straight to the source. Go to the FIFA website and check out this PDF (Laws of the Game).