Second-Degree Black Belt Sudoku
And puzzlers who have completed the first level of sudoku can graduate to these more second-degree puzzles. White and Green belts can keep honing their skills, while Brown and Black will get a new and greater challenge!
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And puzzlers who have completed the first level of sudoku can graduate to these more second-degree puzzles. White and Green belts can keep honing their skills, while Brown and Black will get a new and greater challenge!
