
2) Then, push box to other un-used area. You should push those at left hand coner in order to reduce box at left hand side.

3) Gather two of the left most boxes at left bottom corner. Then, push the right upper box to center as follow.

4) Go through the right bottom gate to left top corner so that you can push that box towards right. Then, posit the center box to center left.

5) This step is tricky, push the second left bottom box to center. (Reduce number of box at left side)

6) You can now push the right upper box to center.

7) And then the left top one.

8) And of course, the center lower one first.

9) Finally.
