Tag Archives: XYZ-wing

A Timely Finned Fish in funster Extreme 88

Posted on August 21, 2018 by

Continuing the review of Charles Timmerman’s funster Hard to Extreme Sudoku, with Extreme 88. The basic compensates for a modest  bypass with a favorable line marking. A naked single early and a finned 2-wing late. Finned fish is a topic … Continue reading →

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Only Extreme 132 Joins the Extreme Team

Posted on October 24, 2017 by

Another payoff for expansion of a limited coloring network via AIC slink. It’s an extreme tactic that, after six years of blogging, I finally blundered my way into.  This collection illustrates the not-both trial thoroughly. Please comment if you know … Continue reading →

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Only Not Extreme 46

Posted on October 10, 2017 by

The review of Castillo’s Only Extreme collection continues with Only Extreme 46.  A very extensive bypass is survived, to leave very little to add in box marking, and an interesting line marking.  The rest is murder by the usual suspects … Continue reading →

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The Limited XYZ-wings of THLS

Posted on December 20, 2016 by

The XYZ-wing is limited in The Hidden Logic of Sudoku, as it generally is in Sudoku literature, by  a limited conception of the weak link.  This post presents a resolution of Royle 17-12407 using an iXYZ-wing, a form of the … Continue reading →

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CLEF Homework on Unsolvable 190

Posted on May 3, 2016 by

Here is a checkpoint Sysudoku reader’s homework on the Sysudoku Cross Line Exocet Filter introduced in the previous post. Was it hard?  I stumbled many times on the 3467 case of the last week, and I may need corrections on … Continue reading →

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Longo’s Nastiest Ever After

Posted on February 9, 2016 by

This post finishes the illustrative review of Frank Longo’s The Nastiest Sudoku Book Ever, with review puzzles 673, 684, 695 and 706. The bv scan and occasional easy coloring continue to be enough for what Frank claimed to be the … Continue reading →

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The Nastiest Ever Party II

Posted on January 26, 2016 by

This post displays some sysudokie snapshots from Nastiest 618, 640 and 651, The bv scan rules, with line marked fish, unique rectangles, Sue de Coq, XYZ-wings, and XY-chains.  A  Sysudoku technique formerly rated extreme gets to stop for a drink. … Continue reading →

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