Patent ID: 7431295

Claim:
A lottery ticket for playing by a player comprising: a substrate having printed thereon: a matrix of nine rows and nine columns defining eighty one locations each for a game symbol; some but not all of the locations being marked locations which have marked therein a number selected from the numbers 1 to 9; all of the locations which are not marked locations being open locations having an open area in which the player can enter a number selected from the numbers 1 to 9; the marked locations having the numbers thereof arranged such that all of the locations including the marked locations and the open locations can be arranged to contain a number selected from the numbers 1 to 9 where all columns and all rows have the nine locations thereof each containing one of the numbers 1 to 9 with each number appearing once only; such that the player can select and enter the numbers in the open locations to provide an arrangement of the numbers in which the marked locations and the open locations contain a number selected from the numbers 1 to 9 where all columns and all rows have the nine locations thereof each containing one of the numbers 1 to 9 with each number appearing once only; wherein the ticket has the characteristic that the lottery ticket is either a winning ticket or a losing ticket based upon at least one criterion depending on the appearance of one of the numbers in one of the locations; and wherein there is provided on the substrate a second matrix identical to the first matrix with the arrangement of the numbers in which the marked locations and the open locations contain a number selected from the numbers 1 to 9 where all columns and all rows have the nine locations thereof each containing one of the numbers 1 to 9 with each number appearing once only wherein at least those locations on the second matrix which correspond to the open locations of the first matrix are covered by a scratch-off material removable by the player.