The sliding is fidgety and the completed puzzle can be picked up by the base.

Each shape is split in 2 files:

* The base, suffixed with "Base" (ex. CircleBase)

* The sliding pieces in a single file with plural (ex Circles)

There are 12 shapes: circle, cross, diamond (rhombus), flower, heart, hexagon (the bestagon), oval (ellipse), pentagon, rectangle, square, star, triangle.