Moving wall problem solved by the Argentines
Great free kicks huh? All the because the wall stayed put.Not possible if the wall had crept closer before the ball was kicked and the ref didn't object.
A solution to this moving wall problem been found in Argentina.
Referees will pace the regulatory 9.15 metres between the ball and the nearest defender and then spray a vanishing white line on the pitch to mark the correct position of the wall.Any bit of the wall crossing the line before the shot will be penalised.
The vanishing line then vanishes from the pitch within a minute.More here..
The japanese are having a great laugh at all this.They already figured out how to put the defenders on a line.Take a look at their technique here...