Patent ID: 7147556

Claim:
An electronic board comprising a grid of grid points on a flat surface, where each grid point is a visible element which is capable of detecting when it is pressed, and an illumination source inside or below the surface which is capable illuminating the visible element by either of two colours, which exhibits a behaviour which makes it useful for playing various games; and in one of these games the behaviour of the board is as follows; the game starts with an equal number of points illuminated in each of the two colours; the board remembers two fixed patterns of points with respect to the point that is pressed, which will be referred to as the current player pattern and the opponent player pattern; the board keeps a record of one of the colours above as the current player colour; when a point is pressed, the board switches off points in the current player colour that are in the current player pattern with respect to the pressed point and points in the other colour that are in the opponent player pattern with respect to the pressed point, and then makes the other colour the current player colour; when all the points that are illuminated are illuminated in the same colour, the board declares the player of this colour as winner.