Virtual Cubes

The JigSaw Cube reminds on a jigsaw puzzle, a tiling puzzle with interlocking and tessellating pieces. Each of these pieces has two rounded tabs out on opposite sides or on adjacent sides, with corresponding blanks cut into the intervening sides to receive the tabs. The cube only features stickers in four different colors. In the initial state the colors are arranged in such a way that no two adjacent stickers share the same color. This sticker arrangement follows the 'four color theorem', also known as 'four color map theorem'. In mathematics it states that, no more than four colors are required to color the regions of a map, so that no two adjacent regions have the same color.