Tag Archives: Gordon Sudoku Guide

Adopting the Slink Marking Bypass


This post reviews the origins of the slink marking bypass, now adopted for Sysudoku basic solving. A bypass trace on Very Hard 28 illustrates the challenge available in a basic level puzzle.   It also kicks off a series of  Dave … Continue reading

Posted in Basic Solving Procedures, Puzzle Reviews | Tagged , , , , , | 2 Comments

Plus and One-Sided Unique Polygons


In this post, the Gordon Guide’s Gordonian Polygons Plus and One-Sided Gordonian Polygons are shown to be variations of the unique polygon, defined here as a loop of cells, containing the same two numbers, which become a loop of conjugate … Continue reading

Posted in Advanced Solving, Expert Reviews, Gordon | Tagged , , , | Leave a comment