Tag Archives: x-fills

An AndrewsMcMeel  6-Star Sample 4-fills Out

Posted on June 28, 2022 by Sudent

Scroll back for the givens grid. After the fourth 4-fill, we never get back to the three unresolved 3-fills in the bypass trace. Here is the grid, just before SE6 (halfway down) wipes out the naked pairs. The Sysudoku basic … Continue reading →

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A Filling USA Today Weekend 5-Star

Posted on June 21, 2022 by Sudent

Starting with a 2-fill, two 3-fills, and a 4-fill near collapse, there’s value by value action left in the bypass for only one value. Scroll back for the givens and trace out the bypass. An x-fill lists the values to … Continue reading →

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A Kampelmann Hard With Bypass Coloring

Posted on June 14, 2022 by Sudent

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 →

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