Floor Mat Puzzle

Abstract

A floor mat puzzle, forming a non-rectangular isometric polygonal mat, has a plurality of edges and a same number of corners as the edges, each corner disposed between two edges. Each edge has at least one engaging protrusion and at least one concavity, each edge further has a first corner protrusion and a second corner protrusion at two corners, and a corresponding first corner concavity and a corresponding second corner concavity provided respectively adjacent to the first corner protrusion and the second corner protrusion.

What is claimed is: 
     
         1 . A floor mat puzzle, forming a non-rectangular isometric polygonal mat, comprising a plurality of edges and a same number of corners as the edges, each corner disposed between two edges, each edge having at least one engaging protrusion and at least one concavity, each edge further having a first corner protrusion and a second corner protrusion at two corners, and a corresponding first corner concavity and a corresponding second corner concavity provided respectively adjacent to the first corner protrusion and the second corner protrusion;
 wherein first corner protrusions and first corner concavities of each edge are mirror images of first corner protrusions and first corner concavities of an edge on an opposite side of the floor mat puzzle to provide a same combination state when the floor mat puzzle is flipped over.   
     
     
         2 . The floor mat puzzle as claimed in  claim 1 , wherein the floor mat puzzle is a hexagonal mat having six edges and six corners, and the first and second corner protrusions and the first and second corner concavities are arranged symmetrically identical with each alternate corner from both sides. 
     
     
         3 . The floor mat puzzle as claimed in  claim 1 , wherein the floor mat puzzle is an octagonal mat having eight edges and eight corners, and the first and second corner protrusions and the first and second corner concavities are arranged symmetrically identical with each alternate corner from both sides. 
     
     
         4 . The floor mat puzzle as claimed in  claim 1 , wherein a pattern on a first side of the floor mat puzzle is different from a pattern on an opposite side of the floor mat puzzle.