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Varikub
From time to time, attempts have been made to construct a three-dimensional puzzle. In no case has it been as successful as with the Soma cube, invented by the Danish author Piet Hein, patented in England in 1934.
Varikub is actually the combination of two Soma games available in two shades, which makes them complementary and allows two people to play, or to obtain a checkerboard effect in the majority of figures.