Tag Archives: Kampbelmann Hard

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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A Harder Kampbelmann, Barely Basic

Posted on May 31, 2022 by Sudent

Hard 143 starts with a stingy bypass, and requires box marking and some line marking. In the bypass, a r9 3-fill resolves  into SW8and the naked pair 36. W8 then follows, either from the 8’s dublex, or  from the West … Continue reading →

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Naked Pairs Carry the Ball in Hard 134

Posted on May 24, 2022 by Sudent

A second Kampbelmann Hard is tough on paper, but  gives way routinely to a systematic bypass. Here is the grid well into the bypass, with a large number of cells held in reserve by box filling naked pairs. In the … Continue reading →

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A Hard, But Bypassed Kampbelmann 50

Posted on May 17, 2022 by Sudent

My Basic bypass starts with a resolved 4-fill. Did yours?  The final collapse begins with the value 8 scan resolving the naked pair left from the resolution of 3-fill c2[258]. In the bypass trace, you can discover when the previous … Continue reading →

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