Mind Mixers Sudoku Puzzles Vol 1: Sudoku Medium To Hard Edition

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Earworms are pretty annoying. They’re little songs that get stuck in your head and prevent you from actually concentrating. In order to get rid of them, Sudoku can help. When you play Sudoku, your head begins to clear away anything else as you begin to focus on spotting patterns and getting the right answers in place. Grab a copy of this Sudoku collection now!