Tag Archives: Very Hard Sudoku

Closing Very Hard v.2 with the Real 38


To be fair, here is my do over of the real Ardv2 38, the one with a given 7 in r7c6.  My omission of it hatched a productive distraction, having no bearing on the collection it came from. The basic … Continue reading

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

A Very Hard Finale with Ardv2 398


A hard basic leaves it to an unusual ALS to shake things loose, enabling an XY and a UR to wrap it up.  Maybe the hardest of the pre-selected Very Hard.   Line marking looks easy, until you look at … Continue reading

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

An Ardson Very Hard Workout


This post checkpoints Ardv2 78, the second review puzzle in A.D. Ardson’s Sudoku Very Hard collection. The puzzle skates by basic and the bv scan, but is tamed on the X-panel. Along with regular collection reviewing posts, I’m revising the … Continue reading

Posted in Advanced Solving, Puzzle Reviews | Tagged , , , , , , , , , | 2 Comments

Mike Peterson’s Very Hard Sudoku, v.1


Resuming posts after a quiet summer, this review identifies the title book as a basic level collection, offering an interesting challenge for the slink marking bypass, and little else.  The brief  introduction offers interesting historical facts, but is another example … Continue reading

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