Hi Discomantis. Good to hear from you. I solved 4x4 Rubik’s so many times, it’s not a challenge anymore. I bought a 5x5 Rubik’s cube. It was poorly made and really hard to turn. It finally seized up and broke a piece off. I have after market cube now that turns nicely, easily. I can solve the 3x3 centers on the 6 sides. But still working pairing up the 3 edge pieces. So that’s about where I’m at.