Each row must have the numbers 1-9 occuring just once. Each column must have the numbers 1-9 occuring just once. And the numbers 1-9 must occur just once in each of the 9 sub-boxes of the grid. Check out the Sudoku Blog In each of the columns, in each of the rows, and in each of the nine boxes. Some Handy links are: Brought to you by the same team that put the Cheap Flights into IWantThatFlight.com.au Welcome our latest Members Friends currently online Want to see when your friends are online? Become a member for free.
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