2) Then, push the other box deep into the coner.
3) put the other two box to coner in order to free space. (They belong to those position anyway)
4) You can move two boxes one step inside.
5) Here is the tricky step. Most of the player cannot find this step.
6) Then finish the two yellow boxes at center top.
7) Bingo! You free those space at door way!
8) You can push up the two boxex at right lower side. And you can finish one box at left coner. Be care, you should move the left lower box, otherwise you cannot move it out later.
9) Simply push all the boxes at top.
10) And it is not hard to complete the others.
11) Complete!
