sudoku-csolver/problems/9x9-20.problem

   1 9.000000000000000000e+00 8.000000000000000000e+00 7.000000000000000000e+00 6.000000000000000000e+00 5.000000000000000000e+00 4.000000000000000000e+00 3.000000000000000000e+00 0.000000000000000000e+00 1.000000000000000000e+00
   2 6.000000000000000000e+00 5.000000000000000000e+00 4.000000000000000000e+00 3.000000000000000000e+00 2.000000000000000000e+00 0.000000000000000000e+00 0.000000000000000000e+00 0.000000000000000000e+00 8.000000000000000000e+00
   3 0.000000000000000000e+00 0.000000000000000000e+00 1.000000000000000000e+00 0.000000000000000000e+00 8.000000000000000000e+00 7.000000000000000000e+00 0.000000000000000000e+00 5.000000000000000000e+00 4.000000000000000000e+00
   4 8.000000000000000000e+00 9.000000000000000000e+00 0.000000000000000000e+00 7.000000000000000000e+00 0.000000000000000000e+00 5.000000000000000000e+00 0.000000000000000000e+00 1.000000000000000000e+00 3.000000000000000000e+00
   5 7.000000000000000000e+00 4.000000000000000000e+00 5.000000000000000000e+00 2.000000000000000000e+00 1.000000000000000000e+00 3.000000000000000000e+00 8.000000000000000000e+00 0.000000000000000000e+00 6.000000000000000000e+00
   6 2.000000000000000000e+00 1.000000000000000000e+00 3.000000000000000000e+00 8.000000000000000000e+00 0.000000000000000000e+00 0.000000000000000000e+00 0.000000000000000000e+00 0.000000000000000000e+00 5.000000000000000000e+00
   7 5.000000000000000000e+00 7.000000000000000000e+00 0.000000000000000000e+00 4.000000000000000000e+00 6.000000000000000000e+00 8.000000000000000000e+00 1.000000000000000000e+00 3.000000000000000000e+00 2.000000000000000000e+00
   8 4.000000000000000000e+00 0.000000000000000000e+00 0.000000000000000000e+00 1.000000000000000000e+00 3.000000000000000000e+00 9.000000000000000000e+00 5.000000000000000000e+00 8.000000000000000000e+00 7.000000000000000000e+00
   9 1.000000000000000000e+00 3.000000000000000000e+00 8.000000000000000000e+00 0.000000000000000000e+00 7.000000000000000000e+00 2.000000000000000000e+00 4.000000000000000000e+00 6.000000000000000000e+00 9.000000000000000000e+00