Report copyright - The Mathematics of Sudoku - Stanford Universityprecollegiate.stanford.edu/circle/math/notes08f/sudoku.pdf1 2 3 4 5 6 7 8 9 4 8 9 4 6 7 5 6 1 4 2 1 6 5 5 8 7 9 4 1 7 8 6 9 3 4 5 9 6
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