Game Description: A puzzle game for the Nintendo DS, based on the Sudoku number game. A board is split into nine rows and columns. The resulting squares are further split into 3x3 groups. The game starts off with some of the squares filled in with numbers between 1 and 9. You have to fill in the rest of the numbers so that each row, column and 3x3 grouping uses the digits 1 to 9 only once.