Esponja de Binimelis (Binimelis Sponge) (IPP23) by M. I. Binimelis Bassa & A.Violant & Holz / Juan Binimelis Ramírez

Esponja de Binimelis (Binimelis Sponge) (IPP23) by M. I. Binimelis Bassa & A.Violant & Holz / Juan Binimelis Ramírez

20 cubes, each with divots and pegs, must be assembled into a 3 x 3 x 3 cube with each face empty in the center and with no pegs protruding from the exterior faces.  Fascinating puzzle represents the first iteration of the Menger sponge.

22 years old, this puzzle is from IPP 23 held in Chicago, USA in 2003.

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