Inter were about to take the lead in their clash from a well-planned indirect free-kick against Barca at Camp Nou, but the ball hit in the bar, and Dzeko missed a huge chance in the first 15 minutes of the game.
Barca defended with a line from 7 players.
Inzaghi put 3 players + 1 at the back if the ball bounce back or in case of bad delivery, 2 players from them drag out 2 players from Barca, Pedri was slightly far from the path of the cross, so he can't intercept it.

Dumfries who was in an offside position made Raphinha had some doubts by taking the 1st contact of the ball, so he checked his shoulder frequently, it also created a gap between him & Lewa, for Lautaro who will run from a deep position.

Dumfries will stand in front of Lewa if he tracked Lautaro, The Argentine striker's run will force Pique to move with back steps trying to arrive first.

The first part of the plan is succeeded, at the last of the line, Inter tried to manipulate Garcia & Busquets by De Vrij's & Dzeko positioning, De vrij in front of them, so Busquets took a forward step from his line, while Eric focused on the Dutch movement, Dzeko who was in an offside position take a back step and tried to push Garcia, Now he is in offside position because of his position adjustment & Pique's movement due to Lautaro, so he had the advantage to arrive to the delivery cross first.

The last part of the plan was Skriniar, who was too wide and almost at the same line with Alonso, who couldn't track both, he ran diagonally to stay onside, his run to frame the goal and the cross, if the delivery cross overhit.

Pique broke the offside line and Lautaro at the near post, Dzeko at the far post & Skriniar had a dynamic advantage because of his starting run

But the chance missed and the ball hit the bar.

This is the power of set-pieces, simple ideas can give you the upper hand in the match in the highest level football competition.
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