Sudoku puzzle & solution generated on 16x16 grid using my Sudoku BackTracker

answer.txt

Puzzle Solved, here is the solution:
 8 15 11 1 | 6 2 10 14 | 12 7 13 3 | 16 9 4 5 |
 10 6 3 16 | 12 5 8 4 | 14 15 1 9 | 2 11 7 13 |
 14 5 9 7 | 11 3 15 13 | 8 2 16 4 | 12 10 1 6 |
 4 13 2 12 | 1 9 7 16 | 6 10 5 11 | 3 15 8 14 |
-----------------------------------------------
 9 2 6 15 | 14 1 11 7 | 3 5 10 16 | 4 8 13 12 |
 3 16 12 8 | 2 4 6 9 | 11 14 7 13 | 10 1 5 15 |
 11 10 5 13 | 8 12 3 15 | 1 9 4 2 | 7 6 14 16 |
 1 4 7 14 | 13 10 16 5 | 15 6 8 12 | 9 2 3 11 |
-----------------------------------------------
 13 7 16 5 | 9 6 1 12 | 2 8 3 10 | 11 14 15 4 |
 2 12 8 11 | 7 16 14 3 | 5 4 6 15 | 1 13 9 10 |
 6 3 14 4 | 10 15 13 8 | 7 11 9 1 | 5 12 16 2 |
 15 1 10 9 | 4 11 5 2 | 13 16 12 14 | 8 3 6 7 |
-----------------------------------------------
 12 8 4 3 | 16 7 2 10 | 9 13 14 6 | 15 5 11 1 |
 5 11 13 2 | 3 8 4 6 | 10 1 15 7 | 14 16 12 9 |
 7 9 1 6 | 15 14 12 11 | 16 3 2 5 | 13 4 10 8 |
 16 14 15 10 | 5 13 9 1 | 4 12 11 8 | 6 7 2 3 |
-----------------------------------------------

sudoku_prob_16_16.txt

4
0 15 0 1 0 2 10 14 12 0 0 0 0 0 0 0
0 6 3 16 12 0 8 4 14 15 1 0 2 0 0 0
14 0 9 7 11 3 15 0 0 0 0 0 0 0 0 0
4 13 2 12 0 0 0 0 6 0 0 0 0 15 0 0
0 0 0 0 14 1 11 7 3 5 10 0 0 8 0 12
3 16 0 0 2 4 0 0 0 14 7 13 0 0 5 15
11 0 5 0 0 0 0 0 0 9 4 0 0 6 0 0
0 0 0 0 13 0 16 5 15 0 0 12 0 0 0 0
0 0 0 0 9 0 1 12 0 8 3 10 11 0 15 0
2 12 0 11 0 0 14 3 5 4 0 0 0 0 9 0
6 3 0 4 0 0 13 0 0 11 9 1 0 12 16 2
0 0 10 9 0 0 0 0 0 0 12 0 8 0 6 7
12 8 0 0 16 0 0 10 0 13 0 0 0 5 0 0
5 0 0 0 3 0 4 6 0 1 15 0 0 0 0 0
0 9 1 6 0 14 0 11 0 0 2 0 0 0 10 8
0 14 0 0 0 13 9 0 4 12 11 8 0 0 2 0