Monthly Archives: December 2016

THLS Needs a Ride on the XY Railway

Posted on December 27, 2016 by Sudent

This post solves an XY-chain example to illustrate the simplicity and efficiency of XY-chains, as opposed to the rule based overcomplicated view of them in The Hidden Logic of Sudoku. From the first, this Sysudoku blog emphasized the fundamental nature … Continue reading →

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The Limited XYZ-wings of THLS

Posted on December 20, 2016 by Sudent

The XYZ-wing is limited in The Hidden Logic of Sudoku, as it generally is in Sudoku literature, by  a limited conception of the weak link.  This post presents a resolution of Royle 17-12407 using an iXYZ-wing, a form of the … Continue reading →

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THLS vs. Unique Rectangle

Posted on December 13, 2016 by Sudent

This post updates the UR chart, with credit to Denis Berthier, then debunks another unfortunate THLS pronouncement. The homework puzzle illustrates another penalty a human solver pays for interpreting  The Hidden Logic of Sudoku as solving advice. Now in our … Continue reading →

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Suset Jelly in nrc Space

Posted on December 6, 2016 by Sudent

Here we work through an advanced supersymmetry example from The Hidden Logic of Sudoku, without the symmetries.  The humanly practical tools of Sysudoku are entirely adequate to the task. The theme of this review is that the burdensome emulation SudoRules, … Continue reading →

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