Here is an improved Sudoku puzzle generated by my program. I’ve added more logical conditions to remove numbers to make the puzzles harder:
| 3 | 2 | 8 | 7 | |||||
| 6 | 5 | 1 | 4 | |||||
| 7 | 6 | 8 | 1 | |||||
| 1 | 5 | 3 | 7 | |||||
| 5 | 8 | |||||||
| 6 | 4 | 7 | 9 | 2 | ||||
| 5 | 2 | 3 | 7 | |||||
| 4 | 9 | 7 | 3 | 2 | ||||
| 7 | 6 | 5 | 1 | 9 |
It’s sitll not 100% perfect, my unit tests are still catching invalid outputs now and then. However, the invalid outputs are just ambigious puzzles that are still technically solvable puzzles, there are just more than one correct solution. I have to still figure out why this happens and how to correct it.
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