strategies for hard sudoku

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Techniques for Hard Sudoku

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How To Do Hard Sudokus In 10 Minutes

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

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

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In which I solve an EXTREME SUDOKU for Twitter

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Top Nine Most Often Used Strategies for Solving Expert Sudoku Puzzles

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Sudoku Secrets No. 2: The X-Wing #shorts

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The Best Sudoku Tip? Use Snyder Notation #shorts

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Making a Hard Sudoku really easy

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Crack Hard Sudoku Puzzles With the Skyscraper Pattern

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'Hard' sudoku made easy - with this simple method

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Tutorial 58. Hard sudoku puzzle with lots of techniques.

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This AMAZING Trick Can Solve Extreme Sudoku

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How To Solve Hard Sudoku With X-Wings Sudoku Shorts 65 #sudoku #puzzle #shorts

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Improve At Sudoku: What To Do When You Get Stuck

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Triplets (a.k.a Triples) and Hidden Triplets Explained - A Sudoku Strategy You MUST Know

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The Simple Trick For Hard Sudokus

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Step-By-Step Method For Hard Sudokus

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

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

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The Sudoku Trick All Expert Solvers Know

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Expert Sudoku: The Basic Techniques Used By Champions

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Easy Solving for HARD Level Sudoku Puzzles: Solve With Me

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Sudoku 'expert' level tricks. Sudoku expert level. How to solve sudoku expert level #puzzle