This is a classic tag, puzzle, where you have to build all the numbers in order. The difficulty lies in the fact that the numbers are mixed, and they can only be moved by substitution. In the field there is one empty space, through which you can put there the nearest digit. During the move, the site of this figure a void, which may take another figure. The first level is pretty simple, there are only five digits in the second for nine and complexity will only grow. The game is fully translated into Russian.