Designer: Osanori Yamamoto

This puzzle measures: 84 mm x 36 mm x 84 mm

Material: American Walnut and Merbau

Kevin Sadler wrote about it:

“The third puzzle by Osanori Yamamoto could easily be called the 'Hashtag' – 4 simple shapes are assembled on a frame in a # shape and need to be removed after arranging them into the correct orientation and position. As one would expect from Osanori, rotations are required… quite a LOT of them! This is trickier than one would expect as the sliding movement and rotation of the pieces is very blocked and requires quite a bit of planning. Eventually I
succeeded in my disassembly only to spill the carefully arranged pieces off my sleeping cat! Needless to say the reassembly from scratch is a huge challenge and involved a good amount of swearing! It is, however, perfectly solvable with thought. A great idea and a worthy challenge to any puzzler.”