Tag Archives: spotting ALS_XZ

A Long Path Begins in ultrahardcore 311


This post begins a series of three, reporting moves by the human oriented review solvers Sudokuwiki and Beeby on Stefan Heine’s UHC 311.  Maybe you can shortcut this long path and a trial, but it allows me to illustrate human … Continue reading

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An ALS Toxic Set Update


This post reviews Sysudoku history on the problem of spotting ALS toxic sets, and presents the updated  recommendation in the ALS Toxic Set page just completed for the Guide.  This spotting process, to be referred to here as ALS partnering, … Continue reading

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