“What happens when we take a standard 6 piece burr and modify the pieces just a bit while keeping the final shape in tact? I present PSI – a level 14.2 burr with a unique solution. Each piece is one or two voxels away from a standard 6x2x2 piece while forming the final 6 piece burr shape that we are all familiar with. The puzzle comes assembled like normal burrs and the goal of the puzzle is to disasemble the pieces and assemble them back. By the way, another side goal of the puzzle is to figure out the full form of PSI 😊“