Patent ID: 7419158
Filing Date: 2008-09-02
Classification: A63F

Abstract:
1. A method of solving a sudoku number puzzle which comprises a grid of eighty-one spaces and which is subdivided into nine boxes of nine spaces each, wherein, at the start of the puzzle-solving process, a portion of the eighty-one spaces have been filled in by a puzzle creator, said method of solving comprising the following steps: a) placement of a puzzle solving aid over portions of the puzzle, said puzzle solving aid comprising four quadrants of opaque means which are separated by a clear plastic vertical column and by a clear plastic horizontal row, said puzzle solving aid further including a central open area means at the intersection of the plastic vertical column and the plastic horizontal row, b) providing that a puzzle solver write in the numbers which are possible for a particular space which underlies the central open area, c) providing that the puzzle solving aid is square or rectangular in overall shape and is utilized with a puzzle having only numbers as a part thereof, d) providing that the numbers which are written in by the puzzle solver are those which are not shown in a visible vertical column or in a visible horizontal row, e) providing that the numbers which are written in by the puzzle solver are also not shown in a three-by-three box area being worked by the puzzle solver.