# Tag Archives: sue-de-coq

## A Sudokuwiki Resolution of Insane 475

In this post Insane 475 is taken through basic and then submitted to Andrew Stuart’s Sudokuwiki solver for advanced solving.  In the original review, the puzzle was solved by an Single Alternative Sue de Coq trial, but in this update … Continue reading

## A Bv Scan of Week 48

Here we checkpoint the sysudoku bv scan on the blog homework puzzle, Week 48 in Paul Stephens’ Mastering Sudoku Week By Week.  The scan includes Sue de Coq and APE, two techniques ignored by Stephens’ books, and two techniques, XYZ-wings … Continue reading

## Forcing Chains in Sue de Coq Analysis

In this post, the classical forcing chain and a sysudokie endorsed application are demonstrated on a multiple solution puzzle. An underlying assumption made in solving a Sudoku puzzle is that it has one and only one solution.  Some composers offer … Continue reading

## Coloring Sue de Coq and APE

Coloring is a general purpose weapon.  It limits the puzzle’s  ability to satisfy the restrictions imposed by  Sue de Coq and APE .  This explains why sysudokies  record the “almost” patterns found in the bv scan, and return to them … Continue reading

## Sysudoku Sue de Coq

This post details forms of Sue de Coq  not revealed  in the founding post of October 24, 2005, widening the definition of classic Sue de Coq to all ALS and including a single alternate version. It introduces another form of … Continue reading

## De Coq on Sue de Coq

This post explains Sue de Coq and invites readers to enumerate all instances of it in the originating post’s puzzle. Sysudoku places Sue de Coq among the first advanced methods to try after basic solving is completed.  It is done … Continue reading