Sudoku Solver

Created a sudoku solver. It could take any sudoku puzzle and solve it as long as there was at least one tile where only one number was possible.

Later this was upgraded to guess which number would be on a tile and then backtrack to that point later if it reached a contradiction and realized that it was impossible for that number to be there.

Then it eliminated that number from that position and guessed the next number.

Coded this entire thing on notepad, with no versioning (because I was new) and never uploaded it to github unfortunately.