Monthly Archives: March 2022

Sysudoku Basic Subsets in a Sunday 5-Star


In this post, a Dave Green Sunday 5-star illustrates how naked and hidden subsets are spotted in Sysudoku Basic, a 3-stage process to identify candidates, and solve many Sudoku puzzles in the process.    Sysudoku Basic finds clues and subsets … Continue reading

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Dave’s Octuplet 


In this post, 3-fills leave a near solution in the bypass, with an entirely blank box. Box marking resolves it systematically. Seeing the four 5-fills and box corner candidates, you might suspect that this is a follow up on the … Continue reading

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Dave Defies the Bypass on a July Saturday


This post encounters a very odd situation. All the givens in your homework Dave Green Saturday 4-star of 7/18/21 are on corner cells of the boxes. No double line exclusion (dublex) or cross hatch clues in the bypass. The past … Continue reading

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Doing Every 4-Fill


In the Dave Green 5-star of 1/23/22, four 4-fills are available before starting the bypass values list, on r2, r8, c2, and c8. It brings up the possibility that 4-fills can solve this Conceptis puzzle by themselves? We normally put … Continue reading

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4-Fills Lead off on a  Dave Green Surprise


In this Sunday 5-star of June 13, 2021, two 4-fills are resolved before the bypass value march begins. Follow-up continues in box marking, leaving little line marking to be done.  Coloring is demanded and it responds, with an unexpected discovery. … Continue reading

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