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Samurai Sudoku
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Sudokus with no one can solve
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Clueless Sudoku 1
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Twin Corresponding Sudoku
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This site ensures that all the sudoku puzzles provided have a unique solution. If you find a problem with multiple solutions, please pay attention to the additional rules of the puzzle.
Twodoku
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.
