Tag Archives: LPO coloring

Just One More “More Extreme”


This post concludes the Alary More Extreme review puzzles with More 144, Basic marking features a timely naked quad, and advanced solving is another parade of highlights. The basic trace classifies More Extreme 144 as a tough one. I would … Continue reading

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The Orphans of GM 95


This post demonstrates an effective attack on an obscuring cloud of candidates of a single number, based on freeform enumeration of patterns.  It finishes the severely imbalanced review puzzle, GM 95, from Xaq Pitkow’s Sudoku, vol 3. A cloud of … Continue reading

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Grinding Down Insane 495 with LPO Coloring


In this concluding post on Insane 495, one of two clusters is expanded by several means, including color LPO and a nice loop, merging clusters and reaching a point where an easy trial color wraps it up.  Insane 495 is  … Continue reading

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