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Tag Archives: 4-fill naked single
A Kampelmann Hard With Bypass Coloring
Ever have a Sudoku fail to tie down a solution? Hard 109 of last post seems to fail to do so without a trial. Coloring, which has found many multiple solutions, defines the unique solution for this one. Starting with … Continue reading
Posted in Basic Solving Procedures
Tagged 4-fill naked single, coloring solves, Kampbelmann Hard, x-fills
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