X-Wings and the Rectangle Rule for Solving Medium to Hard Sudoku Puzzles

Techniques for Hard Sudoku

Making a Hard Sudoku really easy

The New York Times Hard Sudoku: The Most Important Trick

How To Do Hard Sudokus In 10 Minutes

Sudoku Tutorial #40 A must know technique. NOT a puzzle.

In which I solve an EXTREME SUDOKU for Twitter

'Hard' sudoku made easy - with this simple method

Sudoku solution – Los Angeles Times 29 June 2024 Expert level

How To Ace The New York Times Hard Sudoku

How to solve 'Very Hard' Sudoku

Find Hard Sudoku Baffling? Learn This Method!

Tricks For When You Get Stuck On A Hard Sudoku

One Trick That Keeps Coming Up in The NYT Hard Sudoku

Tutorial #50 Solving a hard puzzle from the beginning to the end

These POWERFUL Strategies Can Solve Very Hard Sudoku – SHC 243

The Sudoku Trick All Expert Solvers Know

Beginner's Guide To Solving The New York Times "Hard" Sudoku

Learning to solve Hard Sudoku

How to play Sudoku