How a Death Blossom cracked open a 1766 Unfair puzzle on HoDoKu : r/sudoku
HoDoKu - Sudoku generator/solver/trainer/analyzer
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Can Hodoku have more than 1 solution? When I tried to use Swordfish on candidate 3 in column 5 and 6, it tells me error to exclude 3 in r1c7. : r/ sudoku