Monthly Archives: August 2015

Please Give WXYZ Some Space


This post takes issue with recent redefinitions of the WXYZ-wing It suggests a name for Andrew Stuart’s update, apparently proposed by StrmCkr, and recalls the Bob Hanson’s Bent Naked N-set method in Student Assistant. The derivation of the toxic set … Continue reading

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Arnold Abandons Reason


This post calls out Arnold Snyder’s embrace of arbitrary guessing as a way around the inadequate advanced Snyder methods in Sudoku Formula 3. I also deplore his misguided endorsement of Peter Gordon’s Sudoku Guide. If the puzzle survives the “Snyder … Continue reading

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Advanced Solving with Arnold


This post reviews the 54 pages of Arnold Snyder’s Sudoku Formula 3 devoted to advanced solving techniques. These are sandwiched between 35 pages that repeat his Sudoku Formula 2, and 19 pages on how to get the solution by arbitrary … Continue reading

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Basic Sudoku With Arnold


This post compares Arnold Snyder’s basic solving methods, the techniques leading to a full set of candidates, with Sysudoku basic.  Snyder’s basic methods are described in Sudoku Formula 1 and Formula 2. A second post will evaluate the Snyder advanced … Continue reading

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