Category Archives: Gordon

Peter Gordon in Mensa Guide

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

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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

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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

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Plus and One-Sided Unique Polygons


In this post, the Gordon Guide’s Gordonian Polygons Plus and One-Sided Gordonian Polygons are shown to be variations of the unique polygon, defined here as a loop of cells, containing the same two numbers, which become a loop of conjugate … Continue reading

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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

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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

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The Peter Gordon Fishing Guide


We leave November and basic solving with a review of Peter Gordon’s advanced solving recommendations in his Mensa® Guide to Solving Sudoku, now re-issued as the PuzzleWright Guide etc. After a brief summary of the Guide’s general failings, this post … Continue reading

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