Sudoku tutorial #86 Only 17 numbers to start!
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Tutorial #87. Beginners Delight. A difficult puzzle made easy
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The Sudoku With Only 10 Given Digits
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Tutorial # 65 Unique Sudoku patttern.
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Tutorial #77 Small square within a block trick.
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The Most Under-Used Sudoku Technique
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Germany l can you solve this?? l Olympiad Math exponential problem
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Sudoku Tutorial #94 1 number solved = many numbers solved.
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