Tag Archives: Stefan Heine

A Coloring Merge Overwhelms Heine’s ultrahardcore 223


Continuing from last week’s post, Beeby’s  parade of ALS chains merges the clusters and a near BUG (Bi-Value Universal Grave) wrap finishes UHC 223. Beeby does an ALS_12 with an aligned Z value group in r1 and a single Z … Continue reading

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Beeby Carries UHC 223 to a Second Cluster


This post reports how the Beeby solver comes to life after the Single Alternate Sue de Coq trial , and nibbles Heine’s ultrahardcore 223 to a second coloring cluster. Beeby notes the ANL isas a simple chain, but it’s AIC … Continue reading

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Single Alternate Sue Unlocks ultrahardcore 223


This post reports how both review solvers run out of humanly practical options, and the arduous SASdC trial that unties the knot. At the halfway point of the review UHC 223 starts tough, conceding four clues in basic. Those 6f: to … Continue reading

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Two Clues and Pattern Coloring Beat 179


This post carries a pair of clues, gained a trial of an alternative pair of clues,  to a solution to Stefan Heine’s ultrahardcore 179. The resolution requires a pattern analysis on the 5-panel, aided by two coloring clusters. Going back … Continue reading

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A Partial Pattern Trial on ultrahardcore 179


This post starts with the 5-panel freeform  analysis to compare with yours and then moves on with the partial pattern trial suggested in the last post, of 8 patterns containing 8r2c9. My 5-panel patterns are much less promising  than the … Continue reading

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Preparing a Pattern Trial on UHC 179


This post does Basic and reports humanly practical results from the two review solvers on  ultrahardcore 179. Then for a stall breaking trial, we turn to  the limited value patterns, and their discovery through the X-panel view and freeform drawing.  … Continue reading

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A Pattern Trial Defeats ultrahardcore 135


This post reports on the value pattern trial of the last post, its results, and the relatively easy march to a two cluster coloring solution of Stefan Heines ultrahardcore 135. The trial starts with the three 7 clues and naked … Continue reading

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Deeby Hauls ultrahardcore 135 into Court


In this post, Beeby leads the way, but the instructive methods bring us only to a partial value pattern trial. The trial date is next week. After the usual slink marking Sysudoku basic,     ultrahardcore 135 has a busy … Continue reading

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Sudokuwiki Finishes ultrahardcore 91


This post shows the Sudokuwiki solver path to the coloring finish of trial wounded ultrahardcore 91. Last week it was with Phillip Beeby’s solver. You could use either solver as a model, depending on how you would rather spend your … Continue reading

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Beeby Finishes ultrahardcore 91


The Beeby series continues on trial wounded ultrahardcore 91 until the expanding coloring cluster can  take it home. Is your trial-less solution ready? Next up t is  a 1-way from 1r6c3 that is exended back to 3r2c3 for a second … Continue reading

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