Tag Archives: slink marking

Three Basic Phases on Beware 135


An easy basic workout, with help from 3-fills, a hidden single, many naked pairs, and a hidden dublex in Beware 135, the fourth in the review of Will Shortz’ Hard Sudoku, v.1. And two suggestions for Sysudoku readers. The basic … Continue reading

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The Sudoku Satisfaction Tour


In the next three posts, I introduce Sudoku Satisfaction  by Richard Nicholas Seemel, by inviting sysudokies to attend a tour for Satisfaction readers. The tour will highlight differences between  two systems that agree on basic solving approach, but not on … 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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The 2013 Akron Sudoku Tournament


Here’s my report on the second successful Sudoku tournament put on by the Akron-Summit County Library.  Yours truly didn’t complete a single puzzle in the contest, but I renewed acquaintance with some phenomenal solvers.   I’m including a trace and checkpoint … Continue reading

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Snapshots from Sheldon’s Master Class


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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Slink Marking


This post is about the slink marking, the Sysudoku method of pencil marking.  It explains why this form is far more useful than the keypad system seen in of most Sudoku publications.  This fact is demonstrated here with a historically … Continue reading

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