Three Tiling Puzzles

thingiverse

Here are three tilings for the 6x6 square. The tiling pieces consist of sub-squares connected by edges. A group of six identical pieces made up of six sub-squares and a group of four identical pieces composed of nine sub-squares are provided. Each set can be arranged to tile the 6x6 square. The sets were chosen so that if one takes two of the nine-piece tiles and three of the six-piece tiles, this set of five pieces also tills the 6x6 square. OpenSCAD code is included for reference.