S=3; start=[| 0, 0, 0, 0, 0, 0, 0, 0, 0| 0, 6, 8, 4, 0, 1, 0, 7, 0| 0, 0, 0, 0, 8, 5, 0, 3, 0| 0, 2, 6, 8, 0, 9, 0, 4, 0| 0, 0, 7, 0, 0, 0, 9, 0, 0| 0, 5, 0, 1, 0, 6, 3, 2, 0| 0, 4, 0, 6, 1, 0, 0, 0, 0| 0, 3, 0, 2, 0, 7, 6, 9, 0| 0, 0, 0, 0, 0, 0, 0, 0, 0|];