Mathematician claims breakthrough in Sudoku puzzle

The top 10 mathematical achievements of the last 5ish years, maybe

Puzzling behaviour: Maths professor finds the formula that will solve ANY Sudoku

How Data Mining The Web Reveals What Makes Puzzles Hard For Humans, by The Physics arXiv Blog, The Physics arXiv Blog

Mathematicians Solve Minimum Sudoku Problem

Computer Says No: A New Sudoku Breakthrough

Cutting Through the Hype of Quantum Optimization, by Qiskit, Qiskit

Excluding anything computerised, what is the hardest puzzle, or game you have ever tried? - Quora

Puzzled man solving 'miracle' sudoku becomes sensation

Problem solved sort of: Mathematicians come up with formula to complete every Sudoku (but trying to understand it could take even longer than doing the puzzle)

Which is more challenging, Sudoku or crossword puzzles? Why? - Quora

The Mathematics Behind Sudoku: Solving Strategy, Article

Physics - A Quantum Solution to an 18th-Century Puzzle