Monday, 18 January 2016

Is there a Sudoku answer that has only a single minimal clue set?


User Abigail comments on the titling of "Do sudoku answers always have a single minimal clue set?" :




I'd be surprised if there were a Sudoku which doesn't have at least 2 disjoint clue-sets.



Well then, is there a Sudoku answer that has only a single minimal clue set?




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