Sudoku Variety Puzzle Book for Adults and Seniors. Easy to Hard Level. All rules explained in the book.6 types of Sudoku games: 36 regular sudoku, 36 Hyper Sudoku, 24 X (diagonal) Sudoku, 36 Stairstep Sudoku, 12 16x16 Sudoku, 12 Samurai Sudoku. You will find solutions included in the back. Use your logic and math skills to challenge your brain and have fun.
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