For this weekend, I thought I'd do a little trip down memory lane. If you spent any of your formative years in the 1980s, you remember Rubik's Cube and its many spin-offs. Another company has redesigned the inner workings (for speed) and have scaled the cubes up and down.
They even have some solver videos of the 5, 6, & 7 series at the bottom of their page.
Pros make it look easy.
Enjoy... back to fire, brimstore, and critical thinking, next week.