Tag Archives: hidden UR type 1

Master Class 120 Completes the Update


This post concludes the review update of Tom Sheldon’s Master Class Sudoku and offers an amended review table. The bypass on Master Class 120 is strong enough to keep line marking fill strings short. There are two naked singles, one … Continue reading

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Sudokuwiki Solves Only Extreme 347 by AIC


In the original Only Extreme review, OnEx 347 was an example of a coloring trial on a limited cluster generated by pattern analysis. In this update, Andrew Stuart’s solver demonstrates a solving path to a final coloring without trials, via … Continue reading

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