solve[{{9, 7, 0, 3, 0, 0, 0, 6, 0},
  {0, 6, 0, 7, 5, 0, 0, 0, 0},
  {0, 0, 0, 0, 0, 8, 0, 5, 0},
  {0, 0, 0, 0, 0, 0, 6, 7, 0},
  {0, 0, 0, 0, 3, 0, 0, 0, 0},
  {0, 5, 3, 9, 0, 0, 2, 0, 0},
  {7, 0, 0, 0, 2, 5, 0, 0, 0},
  {0, 0, 2, 0, 1, 0, 0, 0, 8},
  {0, 4, 0, 0, 0, 7, 3, 0, 0}}]