SUDOKU

Downloadable software application for a video game with rules requiring a user to deduce the numbers of all remaining Spaces based on the known numbers in blocks nine-by-nine or three-by-two, and satisfy that every row, column, and block contains the numbers one through nine or one through six that do not duplicate; Downloadable mobile software application for a video game with rules requiring a user to deduce the numbers of all remaining Spaces based on the known numbers in blocks nine-by-nine or three-by-two, and satisfy that every row, column, and block contains the numbers one through nine or one through six that do not duplicate; Downloadable tablet applications for a video game with rules requiring a user to deduce the numbers of all remaining Spaces based on the known numbers in blocks nine-by-nine or three-by-two, and satisfy that every row, column, and block contains the numbers one through nine or one through six that do not duplicate; Downloadable computer game software; Downloadable interactive multimedia computer game programs; Downloadable computer game software via a global computer network and wireless devices; Downloadable electronic game software for use on mobile and cellular phones, handheld computers, and tablet computers; Downloadable computer game software for personal computers and home video game consoles; Downloadable electronic games via the internet and wireless devices; Downloadable puzzle game software