cover artwork as a 15-piece sliding puzzle with negative-3D-CNC-milled woodcarving, applied materials, about 47m² three-layer multilaminar birch veneer with a black melamine resin laminated panel, 26580 lines of CNC-program to mill the artwork, engraved back-cover-artwork, about 200 hours of manual time, ca. 6.5 km of toolpaths and 1.1 km of slots plus 2300 units of stainless steel 3x16 Torx screws.