Tag Archives: Andrew Stuart

The Logic of Aligned Triple AIC Hinges


This post takes on a challenge puzzle17 which follows the Figure 30.1 of the previous post, in Andrew Stuart’s The Logic of Sudoku.   That puzzle illustrated again the type of ANL in which the AIC hinge becomes one of the … Continue reading

Posted in Uncategorized | Tagged , , , , , | Leave a comment

Fleshing Out Stuart’s ALS Node Figure 30.1


Andrew Stuart’s The Logic of Sudoku, in a chapter on Almost Locked Sets, presents an example of an ALS node in a confirming Almost Nice Loop, as Figure 30.1. This post fills in the solution, before and after the series … Continue reading

Posted in Advanced Solving, Expert Reviews, Stuart | Tagged , , , , , , | Leave a comment

Other Pattern Trials for Unsolvable 190


This post continues with UnSolveable 190 to point out  alternative pattern trials leading to the solution, by clearing the monster fog of candidates.. Here again is the  grid after the blue pattern trial of the first 190 post.  Considering  the … Continue reading

Posted in Uncategorized | Tagged , , , , , | Leave a comment

More 8-Pattern Trials on Unsolvable 190


This post continues  the resolution of the 8-patterns of Unsolvable 190 to a conclusion.  In the previous post, setup for the  double exocet solution was defined by a chute lettering table.  A freeform enumeration on the 8-panel divided six patterns … Continue reading

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

The Exocet Chute Table on Unsolvable 186


This post illustrates a sysudokie human solver technique, the exocet chute lettering table, for the second time in the Unsolvable series. The method was applied to the double exocet of Unsolvable 181 in the post of February 18. Unsolvable 186 … Continue reading

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

Sysudoku for Unsolvabrights


In this post, two distinctly Sysudoku techniques have roles in a pattern trial of an Andrew Stuart Unsolvable, this time #183 of January 16, 2016. First, pattern (template) analysis on two numbers finds compatible partial patterns for a coloring trial. … Continue reading

Posted in Advanced Solving, Extreme Solving, Monster, Sudoku Toolware | Tagged , , , , , , | 2 Comments

How the BARN Was Built


This post continues a report on the discovery of a practical human solving technique and the need to have it properly classified and named. This method has been credited to its author, known by his forum moniker as StrmCkr, on … Continue reading

Posted in Advanced Solving, Expert Reviews, Stuart | Tagged , , , , , , , | Leave a comment