Soko Puzzle I 

The board below represents a warehouse containing five numbered boxes. Entering via the doorway, marked by an arrow, you must move the boxes out of the warehouse, not necessarily in numerical order. The thick green regions are solid walls, and you may not pass through them or push boxes through them. You may not jump over the boxes. To push a box, you must get behind it and push it forward into an empty space, along a row or a column. You have to push it completely into the space, not just halfway. You are only allowed to push one box at a time

Try to get as many boxes out of the warehouse as you can.

From L.E. Hordern's Sliding Piece Puzzles.