Tag Archives: slink marking bypass

Bookends of the Only Hard


This post checkpoints the only sysudokie bypass casualty and the only sysudokie basic survivor, in this second review of Manuel Castillo’s Only Hard Sudoku collection. The report of my first review was posted 1 ½ years ago, March 29, 2016. … Continue reading

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

Dave Green’s Three Column Bypass 3-Fill


This post traces the bypass solution of Dave Green’s Friday **** of July 7, 2017, an amazing follow up to my recent addition of 3-fill’s to the slink marking bypass. This puzzle, starting with  three column 3-fills among the givens, … Continue reading

Posted in Basic Solving Procedures, Green | Tagged , , | Leave a comment

Berthier’s Hidden Logic of Sudoku


This post begins a sysudokie reading of Denis Berthier’s weighty and challenging treatise on Sudoku, The Hidden Logic of Sudoku, or in this report, THLS. I start with an overview of the agenda of the book, which  differs greatly from … Continue reading

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

Green’s Labor Day Weekend Workout


Here I checkpoint the bypass on the correct version of Dave Green’s 9/03/16 Saturday 4-Star, and assign my readers to try the bypass on his Sunday puzzle. The series of three demonstrates how the challenge and efficiency of the bypass … Continue reading

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

Recovering From a Small Disaster


This post corrects an incorrect homework assignment, and announces some changes in Sysudoku due to a switch to a new computer and updated operating system. Last week was not a good one. On Tuesday I posted an incorrect puzzle for … Continue reading

Posted in Basic Solving Procedures | Tagged , , , , | 2 Comments

Dave’s Friday Labor Day Four-Star


This post traces basic solving on the first of three Labor Day puzzles by Dave Green.  The series is an opportunity to highlight the efficient and uncluttered basic level Sudoku solving with the slink marking bypass. In keeping with the … Continue reading

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

Adopting the Slink Marking Bypass


This post reviews the origins of the slink marking bypass, now adopted for Sysudoku basic solving. A bypass trace on Very Hard 28 illustrates the challenge available in a basic level puzzle.   It also kicks off a series of  Dave … Continue reading

Posted in Basic Solving Procedures, Puzzle Reviews | Tagged , , , , , | 2 Comments