The value of the number is the number of boxes stacked on top of each others.
The number 4 indicates a stack of 4 boxes. The number 1 indicates a box down, without any box on top of it. The number 0 indicates that there are no boxes at all.
Your objective is to put all the boxes down. In other words you need to get rid of the stacks higher than 1.
You are on the stack of boxes with a @ next to it.
You can move north, south, east, and west with the arrow pad.
You can always go from one stack to another one next to it if the destination is not higher than the provenance. If it is not the case, there are two modes of action:
(1) Jump Mode: You can jump from a stack to another one next to it if the destination is not higher than the provenance by one box. For instance, you can jump from 2 to 2; from 3 to 1; from 3 to 4. However you cannot jump from 2 to 4.
(2) Push Mode: If the destination is higher than the provenance by exactly 1, AND there is space behind the destination, then you can push the box which is on the top of the destination stack, and place it on top of the stack behind it. For instance, from a provenance 2, and a destination 3 with a stack of height 2 behind the destination, you can go to your destination by pushing the box on top of it; The destination will become a stack of 2 boxes, and the stack behind will become a stack of height 3.
If you are stuck with your stacks you can use the "retry" button to try again.
If you are stuffed with your stacks you can use the "next" button to try another level.