Monthly Archives: December 2021

X-panel Elbows for Fireworks

Posted on December 28, 2021 by Sudent

This post illustrates the use of the Sysudoku X-panel for fireworks analysis, as introduced  in forum corresponent shye’s first two examples. Here is shye’s statement of the fireworks principle: What does this actually mean? Given a row, column and intersecting … Continue reading →

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UHC 397 Fills the Stocking

Posted on December 21, 2021 by Sudent

After two “simple” ANL, Beeby finds a candidate removal by pattern overlay analysis. On PhilsFolly.com, this is requested under “POMs”.  Then a pattern analysis for The Guide offers many more removals using freeforms.   A finned swordfish gets us to coloring, … Continue reading →

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An AIC Parade by ultrahardcore 397

Posted on December 14, 2021 by Sudent

This post follows basic with a variety of Alternate Inference Chains. It is an opportunity to compare their effects and corresponding Sysudoku labeling. Three bypass clues, naked triple eliminations, and the line slinks marked in cell corners, that’s the  outcome … Continue reading →

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A BARN Storming UHC 353 Finish

Posted on December 7, 2021 by Sudent

This posts finishes left page ultrahardcore 353, using several notable moves to expand a cluster.  Sudokuwiki starts it with a grouped terminal ANL with line and box winks, a regular swordfish expands the cluster, trapping four candidates. Expansion creates an … Continue reading →

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