Tag Archives: Sudoku BUG

Guide 775 Concluded

Here we continue with Gordon Guide 775, going through Sysudoku advanced methods, but trying particularly to invoke those brought up in the Guide. Last week, we found a regular XYZ-wing, a 231-wing to be exact, generating 11 new clues and … Continue reading

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Mashing the BUG

Bivalue Universal Grave, the uniqueness method, requires knowledge, or at least absolute faith, that the puzzle has a single solution.  Coloring is a powerful analysis tool for the near BUG situation, making such knowledge unnecessary. A happy and prosperous New … Continue reading

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