How to make a sliding puzzle where that one piece is not missing

Hey guys,

I want to make a puzzle sliding game in 2D,

I dont want that last piece to be missing, so for example there is a 3x3, so 9 tiles. If you move one tile to the left, the tile that gets pushed out should go back in on the other side. i dont really know how to explain it.

hopefully this wil help:

1|2|3

4|5|6

7|8|9

and when i slide Nr.2 to the left, it wil look like this:

2|3|1

4|5|6

7|8|9

and when i slide Nr.1 to the top it wil look like this:

2|3|6

4|5|9

7|8|1

How can i accomplish this?

Thanks in advance!