Up for auction is a stunning, handcrafted 27-Piece Jigsaw Cube by the renowned American puzzle maker Keith Winegar (Winegar Puzzle Works). This is not your typical 3D puzzle; it is an incredible feat of woodworking and precision. ​The Design: While many cubes use "polycube" pieces (multiple blocks joined together), this design consists of 27 individual cubes, each precisely cut with 3D jigsaw tabs and blanks on every face. ​The Challenge: Every piece must be oriented and interlocked perf...