White Strong & Flexible: White nylon plastic with a matte finish and slight grainy feel.
About this Product
Bram's Square is an idea by Bram Cohen. Take a 3x4 rectangle of which each of the 3x3 sub-squares can be rotated. Well, actually, Bram wanted a 5x6 rectangle, but even a 3x4 would already be extremely difficult to solve. The movement is slide-turn-slide-slide, repeat ...