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Tutorial #79 A sudoku Puzzle to blow your mind.!!! Locked little numbers.
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Tutorial #68 Strong and Weak links and Open Ended Chains, which enable you to remove small numbers.
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Tutorial #74 The Sudoku 2 String Kite. (A 3 link chain)
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Tutorial #92 Always something to learn. Intermediate level.
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Sudoku Tutorial #96 Matching pairs make the day .
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Tutorial #77 Small square within a block trick.
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