Billed as the ultimate sliding puzzle, the Zigguflat from Recent Toys is a flat take on Bram Cohen's Ziggurat puzzle. Its colourful zig-zag pieces lock together with no frame, and the challenge is to slide them apart and fit them back together again.
Every extra piece makes it much harder, because the number of moves needed grows rapidly with each one. It comes as a 6-piece puzzle, but can be rebuilt as a 4, 5 or 6-piece puzzle, so you can start easier and work your way up.
