Add this square puzzle

This is a fun little Puzzle that's an different take on the "missing square" or "curry's paradox" puzzle.Solve the puzzle with the tiles available. Then, when it's solved, open the little secret compartment that holds an additional tile and rearrange the tiles so that that last piece fits in snugly as well. There are different solutions to thisModel consists of 6 tiles and a base.I suggest printing the base in a different color than the tiles to give it a better contrast.