Tag Archives: X-wing

Only Extreme 390 is Advanced

Posted on May 28, 2019 by

This post finishes the updates on Manuel Castillo’s Only Extreme Sudoku with a less advanced OnEx 390.  This one is a better example of the Sysudoku XY Railway than was the original post. No trials were required in the ten … Continue reading →

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KD Insane 415 Updated

Posted on December 11, 2018 by

This post tells the story in the solving of Krazy Dad Insane v4, b1, n5, as reported in updated Sysudoku posts of 7/13/13 and 7/20/13. It’s one way that coloring and pattern analysis work together. Important features of Sysudoku Basic … Continue reading →

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Funster Extreme 60 and 74 Go Together

Posted on August 14, 2018 by

Two brief advanced appearances are reported in this post in review of the Extreme section of Charles Timmerman’s Funster Hard to Extreme Sudoku. In Extreme 60, the bypass starts with a 3-fill and uses them to solve a big wedge. … Continue reading →

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A Run Through Ardson’s Very Hard Volume 2

Posted on April 18, 2017 by

This post begins a review of A.D. Ardson’s Sudoku Very Hard Puzzles, volume 2. The review will cover 10 pre-selected puzzles from 400, every 40 starting with number 38. Well, almost. The puzzle at the end of the previous post … Continue reading →

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More Satisfaction in Saturday 2

Posted on April 4, 2017 by

This post completes the last hour of the Satisfaction Sudoku tour of Sysudoku, with alternative solution paths beyond the bv scan in Saturday 2. It features a finned X-wing, a coloring wrap, and an alternative freeform pattern analysis with a … Continue reading →

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BV Scan Satisfaction in Saturday 2

Posted on March 28, 2017 by

This post continues the visit of Sudoku Satisfaction readers to Sysudoku with a tour of  advanced method principles applied in a Sysudoku solution of Satisfaction’s Saturday 2 puzzle. The roles of Rick Seemel’s Solution Rectangles I – IV in the … Continue reading →

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The Peter Gordon Fishing Guide

Posted on December 2, 2014 by

We leave November and basic solving with a review of Peter Gordon’s advanced solving recommendations in his Mensa® Guide to Solving Sudoku, now re-issued as the PuzzleWright Guide etc. After a brief summary of the Guide’s general failings, this post … Continue reading →

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The 2014 Akron Sudoku Tournament

Posted on November 25, 2014 by

Here is a report on my experience in the Akron-Summit County Library Sudoku Tournament of 2014 last Saturday. In particular, it’s a brief review on how well my recently introduced dublex bypass worked on the tournament puzzles. Each puzzle came … Continue reading →

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Basic by Our Fingernails

Posted on October 21, 2014 by

Here we continue a salute to Dave Green in the current Sysudoku Basic clinic by illustratively checkpointing a highly challenging Sunday 5-star published in the Akron Beacon Journal on June 29, 2014. Box marking goes nowhere in this gem, leaving … Continue reading →

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A Bv Scan of Week 48

Posted on April 23, 2013 by

Here we checkpoint the sysudoku bv scan on the blog homework puzzle, Week 48 in Paul Stephens’ Mastering Sudoku Week By Week.  The scan includes Sue de Coq and APE, two techniques ignored by Stephens’ books, and two techniques, XYZ-wings … Continue reading →

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