Monthly Archives: July 2014

Hanson Finned Fishing with ALS


Here Bob Hanson’s technique of identifying finned fish through almost locked grids, as reported in Sudoku Assistant – Solving Techniques, is explained and recommended as part of the Sysudoku x-panel analysis. Kraken analysis, neglected by Hanson, is demonstrated to produce … Continue reading

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Sudoku Assistant’s ALS Toxic Sets


This post reviews Bob Hanson’s illustrations on ALS toxic sets, in Sudoku Assistant – Solving Techniques. For these illustrations, Hanson uses the bent naked n-set examples of the previous post. Strangely enough, this extreme economy brings insights. Bob Hanson designed … Continue reading

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Hanson’s Bent Naked n-Set


This post examines Bob Hanson’s Bent Naked Subset rules in Sudoku Assistant – Solving Techniques, and provides a more relevant rationale – and  a more appropriate name – for his technique. Also, XYZ-wings not covered by the BNS are identified, … Continue reading

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Bent Naked What?


Here I object to Bob Hanson’s use of the XY-wing and the XYZ-wing, in Sudoku Assistant – Solving Techniques, to introduce his more complicated concept of “bent naked subsets”. This treatment limits the wings to unit based links.  Also I’m … Continue reading

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Bob Goes Fishing


This post examines Bob Hanson’s grid analysis, the Sudoku Assistant approach to regular fish, as described in Sudoku Assistant – Solving Techniques. Bob Hanson actually takes his generalized method fishing! Out on Sudoku lake, the GN looks like this: If … Continue reading

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