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Samurai Sudoku
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Sudokus with no one can solve
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Clueless Sudoku 1
Clueless Sudoku 2
Twin Corresponding Sudoku
You can now create a Today Sudoku account! Save partially completed questions, switch between devices, track your progress through archives, and record your puzzles solving time.
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Cross Sudoku
Sudokus that no one can solve
Sudokus that no one can solve, not only including Sodukus which is very difficult but also that no one trying to solve it.
