Monthly Archives: September 2014

Gordon’s Guide Basics


This post begins my review of an instruction manual, Peter Gordon’s Mensa® Guide to Solving Sudoku, and the associated puzzle collection the book contains, by Frank Longo. Basic solving is covered here, with advanced techniques and the puzzle collection review … Continue reading

Posted in Basic Solving Procedures, Expert Reviews, Gordon | Tagged , , , , , , | 3 Comments

X-treme Hidden and Naked Treasures


This post features hidden and naked subsets in two Sudoku X-treme review puzzles. All occur in line markings. The first continues from the previous post. The X-treme 210 line marking features two naked triples. The first one breaks up a … Continue reading

Posted in Basic Solving Procedures, Puzzle Reviews | Tagged , , , , | Leave a comment

The Empathy of Nikoli Composers?


Here we briefly consider Nikoli claims of a “human touch” quality in their puzzles, and continue demonstrating Sysudoku basic technique with X-treme Sudoku review puzzles. These are presented by Nikoli as their toughest. Is there a communication between Sudoku composer … Continue reading

Posted in Basic Solving Procedures, Puzzle Reviews | Tagged , , | Leave a comment

Nikoli’s X-treme Sudoku


Here we begin a series of reviews that are a clinic on Sysdudoku basic solving skills. Each collection of the survey will be introduced, with several puzzles checkpointed by 2-D traces. This post introduces the Nikoli Publishing top toughy, the … Continue reading

Posted in Basic Solving Procedures, Puzzle Reviews | Tagged , , | Leave a comment

Harvest from the Assistant Report


This post summarizes what led to the review of Bob Hanson’s web report on his Sudoku Assistant, and what was gained from it. There is also an instructive checkpoint on a T&E method endorsed in the report. I’ve been on … Continue reading

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