Geometric arrangements of coins can serve as the basis for all sorts of puzzles. One popular variant involves going from one configuration to another by sliding coins, subject to given constraints ...

It’s a structure with no right angles and it serves as the base for his new sliding puzzle where each of the 30 panels have a sliding wooden piece on top of it.

Named after the sliding block puzzle that inspired its southern facade, the building uses a mix of high- and low-tech strategies to minimize energy use, including rooftop solar panels, radiant ...