Category Archives: KrazyDad

Super Tough and Insane collections

An Insane Review is Completed


This post checkpoints the finish of the tenth and last review puzzle of the  KrazyDad Insane collection on http://www.krazydad.com.  I also have a summary table for comparison with previously reviewed collections, and some observations about this excellent collection.  My hat’s … Continue reading

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

Grinding Down Insane 495 with LPO Coloring


In this concluding post on Insane 495, one of two clusters is expanded by several means, including color LPO and a nice loop, merging clusters and reaching a point where an easy trial color wraps it up.  Insane 495 is  … Continue reading

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

LPO Lettering on Insane 495


Advanced methods are exhausted on Insane 495 as I review the Insane collection on http://www.krazydad.com.  Basic solving results were reported on the previous post. This post demonstrates a new combination of LPO pattern slicing and pattern conflict analysis that gets … Continue reading

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

KD Insane 485 One Clue Better


Here is a second view of the ANL with slink chain terminals 9r2c9 and the 9 group of the ALS. At least one of the terminals is true.  The value group is true. If it is false, the other terminal … Continue reading

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

Sudokuwiki Gets Pink Olive Assistance


Insane v.4 b.8 n.5, the eighth puzzle of a review of the KrazyDad Insane collection on http://www.krazydad.com, defies Andrew Stuart’s Sudokuwiki, and requires the trial of a pattern sliced cluster to be brought down. The basic trace signals trouble ahead. It’s … Continue reading

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

Trials on KD Insane 475


This updated post shows how pattern slicing, a theme in the Krazy Dad Insane review, fails on the v4, book 7, n5 puzzle. The fall back is a Sysudoku trial innovation, the Single Alternate Trial Sue de Coq. The method, … Continue reading

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

A Sudokuwiki Resolution of Insane 475


In this post Insane 475 is taken through basic and then submitted to Andrew Stuart’s Sudokuwiki solver for advanced solving.  In the original review, the puzzle was solved by an Single Alternative Sue de Coq trial, but in this update … Continue reading

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