Monthly Archives: October 2013

A Trials Experiment with Golden Nugget

Posted on October 29, 2013 by Sudent

This post and the next illustrate the ability of an LPO pattern trial and Sue de Coq verification trials to penetrate the candidate fog of an extreme puzzle, thus allowing advanced methods to solve it.  The subject in this case … Continue reading →

Posted in Advanced Solving, Extreme Solving | Tagged , , , | Leave a comment

KD Insane Review Update is Completed

Posted on October 22, 2013 by Sudent

This post highlights the updates on the 2019 review of the  KrazyDad Insane collection on http://www.krazydad.com. In 2019, the collection continues to stand out as a challenge to human solvers, and a source of innovations.  Continued congratulations to Krazydad’s dad, Jim … Continue reading →

Posted in Extreme Solving, KrazyDad, Puzzle Reviews | Tagged , , | Leave a comment

4X5 Holds Off LPO for a Pattern Trial

Posted on October 15, 2013 by Sudent

The KrazyDad Insane review now ends with another puzzle that frustrates Sudokuwiki, and drives me to a pattern trial. Fortunately the situation calls for the Limited Pattern Overlay process that I passed up in the update of Insane 495. LPO … Continue reading →

Posted in Extreme Solving, KrazyDad, Puzzle Reviews | Tagged , , , , , , , , , | Leave a comment

A Boomer Inspired Pattern Trial in 495

Posted on October 8, 2013 by Sudent

In the original review, KrazyDad Insane 495 was an example of Limited Pattern Overlay, but eluded a decisive solution by LPO. In this update, Stuart’s Sudokuwiki “runs out of known strategies”, but makes some spectacular plays, including an ALS boomerang … Continue reading →

Posted in Extreme Solving, KrazyDad, Puzzle Reviews | Tagged , , , , | Leave a comment

KD Insane 485 One Clue Better

Posted on October 1, 2013 by Sudent

  The Sudokuwiki solution of Insane 485 is reported, starting with the ALS boomerang, but with an extra clue provided by a rare pattern trial. It so happens that one of the two candidates of the ALS 9-group belongs to … Continue reading →

Posted in Advanced Solving, KrazyDad, Puzzle Reviews | Tagged , , , , , , | Leave a comment