The purpose with the Russian screening is, that CR prevents the defender to follow the attacker.
The aim for the attacker is to attack the CR's defender, in order that she must choose the attacker instead of her CR.
By this CR will be free for a pass and can shoot.
The screening made by CR is slantwise facing the goal.

LB throws the ball to the center CB, who returns the ball LB, who is moving against the defense.
The defense moves forward and CR quickly moves diagonally forward and puts a screening on the defender in such an angle, that she is unable to follow LB, when she breaks, takes a dribble and runs against the center.
The ball is passed in front of the screening CR, who shoots.