Monthly Archives: June 2012

A Colorful AIC Feast


We are met today to confirm the AIC take down by sysudokie readers on a tough steer,  Megastar Maestro 49 of Fall 2009. The rodeo begins with limited coloring, the identification of five AIC hinge cells, and an extension of … Continue reading

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An AIC Checkpoint and Challenge


Here we finish off a puzzle that dazzles with artful AIC.  And I hand out a sysudokie AIC solo challenge.  First comes your checkpoint on the alternative route to the initial AN confirming loop, built upon the luscious 2-chain on … Continue reading

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Alternate Inference Chains (AIC)


Readers of this blog are familiar with an alternate inference chain in the form of an XY-chain on a bv map, or an xyt-chain on the grid, or as an X-chain or grouped X-chain on an X-panel.  Humans, as opposed … Continue reading

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Coloring Sue de Coq and APE


Coloring is a general purpose weapon.  It limits the puzzle’s  ability to satisfy the restrictions imposed by  Sue de Coq and APE .  This explains why sysudokies  record the “almost” patterns found in the bv scan, and return to them … Continue reading

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