Abstract: A game includes a plurality of cubical blocks, six distinct but interrelated designs, each of which is divided into the same number of square pieces as the number of blocks in the game. A piece from the same comparable location in each design is affixed to a separate side of a common cubical block. The designs are made and arranged in such a manner that the pieces from comparable locations of the different designs can be interchanged with each other in a variety of combinations to produce amalgamated designs comprised of pieces of several of the individual composite designs. The amalgamable designs are made by starting with one complete design, separating and isolating major elements of the design, selecting a number less than all of the major elements, superimposing them on one another for the base of a new design, and completing the new design by filling in new elements and details not appearing in the first design.

Abstract: Traction augmenting ribs are formed of a semi-rigid material particularly well-suited for placement around a vehicle tire or the like. Each rib is formed of a pair of side arms and an interconnecting central portion which are arranged in a generally U-shaped configuration to fit around the vehicle tire. The side arms are formed of a bow-like spring arrangement which is flexible in response to application of forces at the ends thereof in a radially inward direction relative to the tire so that the side arm ends are positioned to displace the rigid interconnecting elements beyond the contour of the tire. Interconnecting linkages or cables are passed through the rib ends and are tightened in a circumferential direction so as to apply the radially inward force to the rib side arms. Reinforcing steel wires can be included throughout the length of each rib and reinforcing crossbars can be embedded within the central portion of each rib so as to facilitate accommodation of tires of varying tread widths.