Have you been watching the soccer World Cup? Here's a question I've been wondering about for a long time (please see details inside).
On a “free kick”, where there is a wall of defenders, why is there sometimes only 3 defenders forming the wall, maybe even only 2, when at other times there could be as many as 6 or 7 and even some attackers mixed in? What is the rule that allows attackers to be part of the wall??
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