How To Do Hard Sudokus In 10 Minutes

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

Making a Hard Sudoku really easy

Techniques for Hard Sudoku

Y-wing (XY Wing) - an Advanced Sudoku technique

Tutorial 58. Hard sudoku puzzle with lots of techniques.

Crack Hard Sudoku Puzzles With the Skyscraper Pattern

Tutorial #80 A difficult sudoku puzzle made easy

Sudoku solution – The Guardian 8 January 2025 Medium level

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

In which I solve an EXTREME SUDOKU for Twitter

Tutorial #56. A difficult puzzle solved from beginning to end. Lots to learn.

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

Top Nine Most Often Used Strategies for Solving Expert Sudoku Puzzles

'Hard' sudoku made easy - with this simple method

Improve At Sudoku: What To Do When You Get Stuck

A Sudoku Secret to Blow Your Mind - Numberphile

Easy Solving for HARD Level Sudoku Puzzles: Solve With Me

The Simple Trick For Hard Sudokus

How to Solve a Sudoku Game