Patent ID: 8888099

Claim:
A jigsaw puzzle, comprising: at least two puzzle pieces, each of which has an upper face, a lower face and a circumferential edge extending between the upper face and the lower face, each puzzle piece having a circumferential edge portion which faces a circumferential edge portion of the other puzzle piece, and at least one connecting region extending from the circumferential edge portion in the form of a recess or an extension, which is provided with at least one undercut and is formed so as to be complementary to the extension or the recess in a connecting region of the facing circumferential edge portion of the respective other puzzle piece, wherein each of the mutually facing circumferential edge portions on both sides of the connecting region and remote from the latter has at least one circumferential edge piece, along which the course of the circumferential edge, when seen in cross-section, over at least part of its extent between the upper face and the lower face is determined by the bisector of a dihedral angle formed between two lines which intersect on the bisector and which extend from an upper end point of the associated one of the mutually facing circumferential edge portions of the two puzzle pieces to an upper end point of an opposite circumferential edge of the same puzzle piece, and wherein when the puzzle pieces are joined together along mutually facing circumferential edge portions, contact between the two puzzle pieces occurs exclusively at the circumferential edge pieces and in the region of the undercut.