<t>I played with mrowel's codel and came up with a 3-dim with double check. I think it should work...namespace Sudoku{ class Class1 { static void Main(string[] args) { int [,,] mat = new int[10,10,10]; int[][] m = new int[][] new int[] {5,3,0,0,7,0,0,0,0}, new int[] {6,0,0,1,9,5,0,0,0}, new int[] {0...