This interactive website from the Getty Museum feels almost like a game that teaches players to distinguish the work of the master, Rembrandt, from that of his pupils. Pairs of drawings are presented for viewers to compare, for example, Rembrandt's Daniel in the Lions' Den, 1649, is matched with a drawing of the same subject by Constantijn Daniel van Renesse. Viewers can zoom in or out, for closer examination of the works, and expand and collapse item information. There is even a cheater's button, titled "show point of interest", that will reveal the major differences between the drawings. Clicking this button for the Daniel pair brings up the differing details - the master depicts the lions as ferocious beasts with open jaws and shaggy manes, while the pupil's animals are smaller and less menacing and are drawn with "regular, even" lines.