I am making a Sudoku generator and so far, everything works fine, the numbers are all in sequence. My problem is that I don't know how to figure out which numbers can be removed from those sequences, while there are still solutions available. Any ideas?
I am posting the code externally, because it is over 400 lines.

2 comments
No one is going to read through 400 lines, and what is a Sudoku?
Did you seriously just down-vote me for having a big script? Also how old are you? 5? The code is there for reference, I never asked for any help with errors, I was asking how I should go about doing something. Now, please remove your down-vote.