Algorithm: https://en.wikipedia.org/wiki/Sudoku_solving_algorithms#Backtracking
Technologies:
- Python 3.6
- PyPy (version for Python 2.7)
- PyQt5
Thanks to PyPy even Sudoku created to work against Brute-Force can be solved under one minute. Normal Sudoku is usually done in less than half a second. Source: https://en.wikipedia.org/wiki/Sudoku_solving_algorithms#/media/File:Sudoku_puzzle_hard_for_brute_force.svg