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Tag Archives: box/line
The Volume 10 Rebecca Bean Extremely Hard Sudoku
This post begins the second review of a Rebecca Bean collection, this one prompted by a clever cover, and similarities in format to recently reviewed collections attributed to Moito Publishing, A.D. Ardson and James D. Glover. Here we resolve Extremely … Continue reading
Touring the Bypass and a Human Engineered Inscription
This post continues the visit of Sudoku Satisfaction readers to Sysudoku with a demonstration of the slink marking bypass, line marking inscription, and basic subset spotting. How was lunch? . . . Good. OK, we’re ready to continue. Here is … Continue reading
Posted in Basic Solving Procedures, Expert Reviews
Tagged box marking, box/line, bypass, line marking, Richard Seemel, Sudoku Satisfaction
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Hidden Logic Box/Line Interactions
This post looks at the brief and very late THLS treatment of box/line interactions in rc space. I say late, because box/lines (1/31/12) are essential in basic marking of candidates. But in The Hidden Logic of Sudoku, box/lines are introduced … Continue reading
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
Posted in Basic Solving Procedures, Expert Reviews, Snyder
Tagged Arnold Snyder, basic Sudoku, box/line, pencil marking, slink marking, subsets
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Basic Solving With Bob Hanson
I start my review of Sudoku Assistant – Solving Techniques with the basic solving of Hanson’s Sudoku Assistant, introduced by last week’s post. Basic solving is defined as the process by which we complete the candidate grid, required for advanced … Continue reading
Posted in Basic Solving Procedures, Expert Reviews, Hanson
Tagged basic solving, Bob Hanson, box/line, completion, number scan, Sudoku Assistant
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Box/Line Reduction
In a box/line reduction, or “box/line” for short, a line’s candidates for a number are restricted to one box. That makes these candidates a toxic set, since one of them must be supplied to the line. We can remove other … Continue reading
Line Marking Follow Up Actions
This post describes the follow up to the candidate fill of each line in Sysudoku line marking. This includes the marking of line slinks, checking for X-wings, identification of naked and hidden singles, and marking of bi-value cells. It also … Continue reading
Posted in Basic Solving Procedures
Tagged box/line, hidden triple, line marking, locked sets, naked triple, pencil marking, sudoku candidates, X-wing
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