Task 8 - Have a Break and Solve a Sudoku

The fastest Sudoku solver - Code Golf Stack Exchange

What is the algorithm used to determine the difficulty level of a Sudoku puzzle? - Quora

How to Play and Win Sudoku - Using Math and Machine Learning to Solve Every Sudoku Puzzle

Solving Sudoku in real-time using a Convolutional Neural Network and OpenCV, by Dmitrii Eliuseev

Sudoku Solver in Python - Lior Sinai

Mathematics of Sudoku - Wikipedia

Intermediate Sudoku Solving Techniques – Part 2: Three Rows at a Time

An unsolved Sudoku and marking of cells containing clues.

Sudoku Solving Techniques

Sudoku and Backtracking : r/programming