Tag Archives: Sudoku remote pair

Departing Highlights on Bean’s Extremely Hard Sudoku

It’s time to wind up the volume 10 review, with a few highlights behind the review table. The first one is the very unusual basic trace of IV-12, the homework puzzle of the previous post. You have the characteristic Extremely … Continue reading

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Remaining THLS XV hXY Avoided

Here we complete the report on the puzzles selected in The Hidden Logic of Sudoku to show that hidden XY chains are an “inescapable tool for the advanced player”, and therefore  require the generation and maintenance of symmetry grids. None … 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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