4-4 point, double low approach, attach-extend
See easy way out of a double kakari for the josekis after and .
can attach underneath, and a simple response is to hane at , obtaining a base in the corner.
If Black has a supporting stone at , almost always choose to seal in the White group.
For this 3-3 invasion variation, see 4-4, double low approach, attach-extend, 3-3 invasion.