Object of the game:
Assemble the entire picture in the gray field of the table. During assembly you can place scraps into any cells (both gray and white). To move a scrap click it, and then click any empty cell. You can't place one scrap over another or outside the table. The game ends after completely assembling the picture.

If it seems to you that the picture is assembled, but the game does not stop, look closely: some cells are interchanged. Pay attention to the bounds of cells: if they are visible, the order of scraps is incorrect.