Patent ID: 6550769
Filing Date: 2003-04-22
Classification: A63F

Abstract:
A puzzle comprising:a set of non-border pieces; and a set of border pieces, each border piece including at least one segment not adjacent to another piece when the puzzle is assembled; wherein: each non-border piece includes: a first arc segment having a convex shape, and a second arc segment having a convex shape, being superimposed on the first arc segment, having a radius of curvature smaller than a radius of curvature of the first arc segment to which it is superimposed, and being shaped to interfit with a concave arc segment of an adjacent piece; non-border pieces are shaped to each include a second arc segment that is concentric with the first arc segment of an adjacent non-border piece; non-border pieces are shaped to each include a first arc segment that is concentric with the first arc segment of an adjacent non-border piece.