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".
The Battle of Alexander at Issus, Albrecht Altdorfer
Heroic Landscape with Fishermen, Théodore Géricault
The Boating Party, Mary Cassatt
A Sunday Afternoon on the Island of La Grande Jatte, Seurat