pcwiz
Veteran
Hi Everybody,
I've seen videos of speedcubers solving rubik's cubes at the official competitions. I notice the coordinators put a black box over the cube jsut before the speedcube starts. What is that black box for?
I've seen videos of speedcubers solving rubik's cubes at the official competitions. I notice the coordinators put a black box over the cube jsut before the speedcube starts. What is that black box for?