Tag Archives: basic Sudoku

Recovering From a Small Disaster

Posted on September 27, 2016 by

This post corrects an incorrect homework assignment, and announces some changes in Sysudoku due to a switch to a new computer and updated operating system. Last week was not a good one. On Tuesday I posted an incorrect puzzle for … Continue reading →

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Basic Sudoku With Arnold

Posted on August 4, 2015 by

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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The Empathy of Nikoli Composers?

Posted on September 16, 2014 by

Here we briefly consider Nikoli claims of a “human touch” quality in their puzzles, and continue demonstrating Sysudoku basic technique with X-treme Sudoku review puzzles. These are presented by Nikoli as their toughest. Is there a communication between Sudoku composer … Continue reading →

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Nikoli’s X-treme Sudoku

Posted on September 9, 2014 by

Here we begin a series of reviews that are a clinic on Sysdudoku basic solving skills. Each collection of the survey will be introduced, with several puzzles checkpointed by 2-D traces. This post introduces the Nikoli Publishing top toughy, the … Continue reading →

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Starting With Stephens

Posted on April 9, 2013 by

This begins a review of Paul Stephens’ solving recommendations and puzzles.  The review is based on Paul’s currently offered books,  Mastering Sudoku Week by Week, subtitled “52 steps to becoming a Sudoku wizard” , and his The Sudoku Addict’s Handbook. … Continue reading →

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Snapshots from Sheldon’s Master Class

Posted on February 19, 2013 by

Here are some images from the Master Class review puzzles that illustrate Systematic Sudoku solving in action.  I deemed the collection strong in basic solving, with very limited excursions into advanced techniques. First is the #40 grid at the close … Continue reading →

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Thoughts on Sudoku Basic Solving

Posted on November 1, 2011 by

This post concludes my series of posts on basic solving, the actions taken to identify all candidates.  As  the October posts have shown, sysudoku basic solving also identifies and marks strong links and locked sets in boxes and lines.  It … Continue reading →

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Sysudoku Line Marking

Posted on October 13, 2011 by

This post describes the Sysudoku basic technique of line marking, which pencil marks all remaining candidates, line slinks and bi-value cells.  In a walk through line marking of the Sue de Coq classic, the efficiencies of line marking are explained. … Continue reading →

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Sysdudoku Box Marking

Posted on October 11, 2011 by

This post describes in detail the procedure of box marking, the first of two basic solving stages of Systematic Sudoku.  Box marking identifies and marks slinks and naked subsets within boxes, as well as new clues.  A walkthrough illustrates  the … Continue reading →

Posted in Basic Solving Procedures, Sudoku Toolware | Tagged , , | 5 Comments