# Tag Archives: Gordon Guide Sudoku

## Guide 775 Concluded

Here we continue with Gordon Guide 775, going through Sysudoku advanced methods, but trying particularly to invoke those brought up in the Guide. Last week, we found a regular XYZ-wing, a 231-wing to be exact, generating 11 new clues and … Continue reading

## Gordon Guide Puzzle Review

This post reviews the collection of 700 Frank Longo puzzles following the text in the Gordon Guide to Solving Sudoku. A review table summarizes the Sysudoku rating of 10 preselected puzzles, and one advanced puzzle is analyzed in detail. The … Continue reading

## Cycling Blindfolded with the Guide

This post calls out Gordon Guide misguidance related to coloring, slink chains and the XY chain. AIC fundamentals are omitted in favor of ineffectual strategy and renaming of well known AIC formations. First, lets checkpoint the basic solving of the … Continue reading

## Wings and Chains With the Gordon Guide

This post reviews the Chapter 9 of Peter Gordon’s Sudoku Guide, entitled Forcing Chains and Grid Coloring. The guidance is very limited, and what there is, promotes guessing as opposed to solving by logic. This verdict is confirmed in the … Continue reading

## Extended Gordonian Overreach

In this blog, the Gordon Guide’s deceptive attempts to promote Gordonian logic are further exposed. The renaming of extended unique rectangles, and the introduction of a purported new method, the Gordonian Rectangle Wing, are debunked. While attributing extended unique rectangles … Continue reading

## A Gordonian Fantasy

Here we spring a booby trap laid by the “definition by example” policy of the Peter Gordon Guide. It is the Gordonian Polygon, as demonstrated by his Guide to Solving Sudoku. The correct interpretation and application of the strategy are … Continue reading

## Gordonian UR-ology

This post continues a review of advanced instruction in Peter Gordon’s Guide to Solving Sudoku, by explaining why unique rectangle methods need not be renamed “Gordonian rectangles”, and why you can’t count on Gordon’s Guide to make you an expert … Continue reading

## The 2014 Akron Sudoku Tournament

Here is a report on my experience in the Akron-Summit County Library Sudoku Tournament of 2014 last Saturday. In particular, it’s a brief review on how well my recently introduced dublex bypass worked on the tournament puzzles. Each puzzle came … Continue reading