Enjoy the mental challenge of combining mind control, fantasy, logic and patience.
With 64 wooden handmade pieces joined with elastic string. Size 8cm x 8cm x 8cm height.
DIFFICULTY OF SOLUTION: ******
DIFFICULTY OF MEMORIZING: *****
Riddle in the shape of a crypt, twice difficult because it is also locked. Try to find the way to open the six pieces and create the wooden knot back again.