Finned & Sashimi X Wings in Plain English! / Tutorial #11
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Sudoku Tutorial #11-A / X Wing Examples & Tips
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Unique Rectangles Part 1 / Sudoku Tutorial #20
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The Best X-Wing Explanation You Will Ever See! / Tutorial #10
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W-Wings are SO COOL! / Sudoku Tutorial #25
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Finned & Sashimi Swordfish Unveiled! / Tutorial #13
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How to Find and Use Triplets in Sudoku Puzzles / Tutorial #9
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W-W-What's a W Wing?!! Discover this SIMPLE yet Powerful strategy for Hard puzzles
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