It is easy to solve and very entertaining to solve it, it is even more beautiful without solving. The only drawback is that it turns a little hard, due to its complex design, but once lubricated it improves a lot.
It has taken me a long time to find this product on a black basis since it is sold out in almost all stores and I wanted to obtain it for my collection, that is why I have paid the very high cost of international shipping Spain that Cubedepot charges, it has taken 7 days to arrive .
Overall I am very happy with this purchase.