Tag Archives: dublex bypass

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

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The 2014 Akron Sudoku Tournament


Here is a report on my experience in the Akron-Summit County Library Sudoku Tournament of 2014 last Saturday. In particular, it’s a brief review on how well my recently introduced dublex bypass worked on the tournament puzzles. Each puzzle came … Continue reading

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The Fiendish 100 BUG-gy Maze


Bad news for Su Doku Master Wayne Gould. Fiendish 100, the only “Fiendish” of our Train Your Brain Su Doku Fiendish review to survive line marking, is found to have at least 15 solutions. The solutions are revealed in multiple … Continue reading

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Fiendish NPM Wins and Loses


The NPM collapse of Fiendish 130 is checkpointed, with regular slink marking backup on the solving logic. Then slink marking reveals the more demanding mental task necessary for NPM solving of Fiendish 145. Your “No Pencil Marks” trace to a … Continue reading

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Just One More Dave Green


Here we savor one more basic solving 5-star gem by Dave Green, appearing in my paper, the Akron Beacon Journal, October 19, 2014. My plan was to conclude the Dave Green portion of the Sysudoku basic solving clinic with the … Continue reading

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