Category Archives: Hanson

Bob Hanson in web report on Sudoku Assistant program

A WXYZ vs. BARN Settlement

Posted on April 10, 2018 by Sudent

In this post, progress is reported on the Sysudoku Guide, and on  a possible territorial agreement between the WXYZ wing and the Bent family. The Guide, that link up there on the menu bar, is taken shape. The Basic pages … Continue reading →

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Please Give WXYZ Some Space

Posted on August 25, 2015 by Sudent

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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Harvest from the Assistant Report

Posted on September 2, 2014 by Sudent

This post summarizes what led to the review of Bob Hanson’s web report on his Sudoku Assistant, and what was gained from it. There is also an instructive checkpoint on a T&E method endorsed in the report. I’ve been on … Continue reading →

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Trial or Error?

Posted on August 26, 2014 by Sudent

This post compares Sysudoku trial strategy with the chain or disproof hypothesis strategy described in Bob Hanson’s Sudoku Assistant report. My opinion is that Bob’s strategy contributions and his Sudoku Assistant solving records are both compromised by a willingness to … Continue reading →

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Hanson’s Strong and Weak Hinges

Posted on August 19, 2014 by Sudent

Continuing our intense review of Bob Hanson’s web report on Sudoku Assistant, I found no useful additions to the Sysudoku repertoire in the next few sections, so they just get a mention in passing. Then we examine Bob’s simple but … Continue reading →

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Hanson’s Polarity ANL

Posted on August 12, 2014 by Sudent

This post reviews the section of Bob Hanson’s Sudoku Assistant report titled Almost- Locked Ranges. It presents an effective solving idea, but with hazy definitions and a confusing name. Here I identify this idea as a familiar one in the … Continue reading →

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Suset Sashimi

Posted on August 5, 2014 by Sudent

This review of Hanson’s Sudoku Assistant shows that his grid ALS discovery algorithm, which I have long used as a scratchpad algorithm for human solvers, is very good at finding effective finned fish and kraken fish, particularly sashimi. Readers were … Continue reading →

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Hanson Finned Fishing with ALS

Posted on July 29, 2014 by Sudent

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

Posted on July 22, 2014 by Sudent

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

Posted on July 15, 2014 by Sudent

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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