Abstract: A game set which comprises a set of two-dimensional or three-dimensional game pieces of the same size and geometrical configuration and a method of playing with this game set, with or without a computer. In preferred embodiment, each game piece has a square-shaped playing surface. Each of the four sides of each playing surface of each game piece has a selected visible indicia. The criteria determining how the indicia are to be arranged on the sides are mathematically selected so as to permit the use of the game as a mathematical puzzle that may be played by one player, played competitively by two players, or for other purposes of entertainment or intellectual simulation. In many of the games, the game pieces are arranged in a mutually abutting side-by-side relationship, whereby the indicia on each of the sides may match and align with the indicia on respective abutting sides of other game pieces of the set, and with the top surfaces of the abutting game pieces forming a square.

Abstract: A method and an adjustable portable illumination device, removably attachable to a user's shoe or garment, enabling hands-free operation, and allowing the user to see and be seen. The device has a light housing, a light assembly having an illumination member encapsulated in the light housing, a power source for providing power to the illumination member, a movable plate, attached to the light housing and a light housing attaching member for removably attaching the light housing to the top frontal area of a user's shoe, or on an other article of clothing. The movable plate has a swivel member attached to the movable plate, for vertical positioning of the light housing at an adjustable angle between 20 and 70 degrees relative to the ground.

Abstract: The invention is directed to a method and an anti-theft device for a personal watercraft which is powered by a gasoline engine-driven jet pump. The anti-theft device, having a nozzle cover, a cover holding mender and a cover locking member, is designed to be sealably attached to a jet pump steering diverter nozzle in order to prevent and deter theft of such a watercraft. The jet pump steering diverter nozzle, having an entrance and an exit end, is locked by mounting the nozzle cover to the exit end of the jet steering diverter nozzle, the nozzle cover is engaged in tight contact with the jet steering diverter nozzle with the cover holding member, whereby preventing movement of the nozzle cover in order to restrict the flow of water passing through the jet steering diverter nozzle, and the nozzle cover is locked to the jet steering diverted nozzle in order to prevent unauthorized removal thereof.