This is the shape that solves the long standing Einstein problem in mathematics. This single 13 sided shape, coined the "Einstein tile" or "Einstein hat", can be tiled infinitely without ever having a repeating pattern.
You can choose up 2 colors for a set and can choose the number of pieces in the set.
If you select the same colors for color 1 and color 2, all colors will be that color.
If you select 2 different colors, half of the pieces will be color 1 and half will be color 2.
This tiling puzzle is challenging and rewarding.