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How To Do Hard Sudokus In 10 Minutes (Cracking The Cryptic) View |
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X-Wings and the Rectangle Rule for Solving Medium to Hard Sudoku Puzzles (Learn Something) View |
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Making a Hard Sudoku really easy (Cracking The Cryptic) View |
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In which I solve an EXTREME SUDOKU for Twitter (Scott Stro-solves) View |
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Techniques for Hard Sudoku (Cracking The Cryptic) View |
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Tutorial #40 A must know technique. NOT a puzzle. (Sudoku Guy) View |
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'Hard' sudoku made easy - with this simple method (Cracking The Cryptic) View |
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Triplets (a.k.a Triples) and Hidden Triplets Explained - A Sudoku Strategy You MUST Know (Learn Something) View |
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XY-Chain : Advanced Technique to solve hard sudokus. (SudokuManiacs) View |
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Learning to solve Hard Sudoku (Cracking The Cryptic) View |