Use arrow keys to move the camera or activate the joystick from the menu.
You can zoom from the menu or press keyboard keys "Q" and "A".
To change the number of pieces select the horizontal and vertical amount from the menu and then press "Create".
New Castle Poppy, Edmund Charles Tarbell
Ceiling of the Cathedral of Aachen, Germany
The Laborers, Georges Seurat
Saint Ambrose barring Theodosius, Anthony van Dyck