Side area shoot stopping analysis

Today, let's analysis the side shot's stoping.
Let's analysis why the goalkeeper should not lost goal
and why the striker is hard to score in this red area.

The range in which the goalkeeper can handle the ball
using only his or her hands in the set position              
It's 2m.
Ball diameter  : 22cm.

Goalkeeper defensives range

You can test this area.
Doll : B position 70cm wide, 180cm tall
Shot area : A (1m square)
Player      : 5 attacker x 5 time
You check how many they get scors.

If you test that area.
Goalkeeper : B position
Shot area     : A (1m square)
Player          : 5 attacker x 5 time
You check how many they get scors.
   

Through this test, I want you to know the training of 
the goalkeeper.